CN103306052B

CN103306052B - The method for manufacturing personal hygiene products

Info

Publication number: CN103306052B
Application number: CN201310080099.6A
Authority: CN
Inventors: 布赖恩·K·亚当斯
Original assignee: Nordson Corp
Current assignee: Nordson Corp
Priority date: 2012-03-13
Filing date: 2013-03-13
Publication date: 2017-10-27
Anticipated expiration: 2033-03-13
Also published as: CN103306052A; DE102013204211A1

Abstract

A kind of method for the disposable absorbability personal hygiene products for manufacturing the elastic strands for including stretching and flat non woven substrate, including gas-pressurized and hotmelt are mixed to form foam glue.Foam glue silk is discharged towards the elastic strands of stretching, and is deposited in the elastic strands of stretching, and the elastic strands upper volume so as to foam glue in stretching expands.The elastic strands of stretching are fixed to by flat non woven substrate by foam glue.Alternatively, two flat non woven substrate portions of disposable absorptive personal hygiene products are fixed together by foam glue.

Description

The method for manufacturing personal hygiene products

The cross reference of related application

The U.S. Provisional Patent Application Serial Article No.61/610,063 submitted this application claims on March 13rd, 2012（It is pending） Priority, the disclosure of which is incorporated herein with reform.

Technical field

The application is related to a kind of distribution method, and it is used for during disposable absorptive personal hygiene products are manufactured, Xiang Yi The various parts coating foam hotmelt of secondary property absorbability personal hygiene products.

Background technology

In manufacture disposable absorptive personal hygiene products, such as diaper, adult incontinence productses and feminine hygiene phase Between, by liquid adhesive, such as hotmelt is coated in various parts.In order to which hotmelt is coated into disposable suction In the various parts of the property received personal hygiene products, various distribution systems have been have developed.In an example, these distribution systems will The lamination of hotmelt or binder course are coated between two flat substrates, are such as coated in nonwoven fibre layers and thin polyethylene Between counterdie.In another example, one or more of hotmelts silk is applied to one or more of thin elasticas Stock, then makes the elastic strands adhere to non-woven lining bottom, to form being handled through elasticity for disposable absorptive personal hygiene products Portion.In the downstream of distribution system, various parts（For example, flat substrate layer and elastic strands）Through pressure clamp, part is consolidated It is scheduled on together.

In such applications, hotmelt silk must be carefully controlled during distribution, to ensure desired adhesive Pattern is applied to thin elastic strands, or in the narrow region of accurately restriction being coated in flat substrate.In known allocation system In, the continuous fibers of liquid adhesive are discharged from the mould or nozzle exported with one or more adhesives.Each adhesive Outlet generally all has related plant air outlet, and air-spray is discharged in plant air outlet at allocated silk.It is empty Gas jet makes every liquid adhesive silk attenuate, and causes the silk substantially with rearwardly and a forwardly mode, spiral fashion or take Certainly the another way in the position of air-spray is moved.When silk is deposited in mobile flat substrate, the silk forms overlapping Pattern or non-overlapped pattern.Therefore, in order to be accurately positioned and adhere to mobile strands or flat substrate, liquid is carefully controlled Adhesive filament.

Liquid adhesive silk is controlled in order to careful, the plant air jet used in these known allocation systems is with a high speed Degree movement, the high speed is enough to change the flight of liquid adhesive silk by controlled way.However, using high relative velocity air Excessive " flight " can be caused, distribution pattern is expected wherein adhesive filament is blown off.Being somebody's turn to do " flight " causes adhesive deposits in expectation Pattern border outer.Also it can result in " shooting " using high relative velocity air-spray, wherein the winding of adjacent adhesives silk, and Bead of adhesive and unexpected pattern are formed on substrate.It is thus known that distribution system needs adhesive to have fully high speed Degree and/or density, so that repeatable and accurate control can be carried out while " flight " and " shooting " is minimized.

Adhesive combination effect between the elastic strands of evaluation one or more root and one or more flat substrates When, the characteristic generally measured is creep resistance." creep " of elastic strands is defined as, and the either end of elastic strands is adhered to from the end The motion started to the initial position of substrate.The level of creep resistance indicates that the end of elastic strands is remained adhered on viscous Situation about being attached in the position of the substrate of elastic strands is how well.Because elastic strands adhere to substrate under tension, So elastic strands continue to substrate applying power, and adhesive attempts the unstretched condition that recovers to loosening.The power causes During using disposable absorptive personal hygiene products, the product through elastic processing unit（For example, the leg goffering on diaper） It can keep solidly joined with skin surface.If the elastic strands in disposable absorptive personal hygiene products are passed through after assembling What successive obvious creep compliance, at least one end of elastic strands effectively will just depart from substrate to be combined, and is reduced through elasticity Processing unit is kept and the solidly joined ability of skin surface.In order to avoid the bad creep, it is necessary to by being applied to elastic strands Adhesive formation high quality bond, so that elastic strands are not disengaged with substrate.

A kind of well-known method that therefore quality for improving adhesive combination reduces creep is in substrate or elastica Other adhesive is applied on stock.However, applying length of the too many adhesive along elastic strands to elastic strands has locked elasticity Strands, therefore elastomeric material is reduced to the effect of substrate applying power.In other words, elastic strands, which are lost to substrate, applies foot The ability of enough convergent forces.

In addition, the amount for the adhesive that increase is used in the manufacture of disposable absorptive personal hygiene products is significantly increased into This, and also reduce " feel " or pliability of obtained product.Apply too many adhesive material and improve obtained product Hardness, and may also lead to " burn ", when adhesive material burns or melts the substrate by adhering to, occur " burn-through ".Especially It is that the pliability of completed knocked down products is for evaluating the another of disposable absorptive personal hygiene products quality in diaper manufacture One important measured value.Therefore, the amount of the adhesive for elastic strands to be adhered to substrate should be minimized, while also keeping Gao Shui Flat creep resistance, the burn-through of high convergency power and minimum and hardness.Adhesive dispensing systems should carefully control the liquid of discharge Adhesive filament, with by the minimum of adhesive using ensuring accurate adhesive disposed material and to ensure high quality bond.

Similarly, can be by being applied to one or two substrate when constructing disposable absorptive personal hygiene products Adhesive pattern, two or more substrates are adhered to each other.For example, two substrates can be adhered to along the marginal portion of substrate. As a result, it is necessary to the adhesive filament that careful control is discharged towards substrate, it is accurate along edges of substrate and in edges of substrate to ensure Positioning, also referred to as " Edge position control ".If adhesive filament undergoes " winged " of any non-negligible quantity from the expectation on substrate Pattern, the feature of the adhesive is exactly to have bad Edge position control, and this negatively affects disposable absorptive personal hygiene products In element it is ultimately constructed.For the purpose, adhesive dispensing systems must carefully control liquid adhesive silk, to avoid The bad Edge position control spent in " flight " and substrate adhesion.

By contrast, in other adhesive distribution fields, such as pack（For example, box）On adhesive distribution in, By the way that nitrogen or another gas are injected into liquid hot melt adhesive to form foam glue, to make the adhesive used in coating Total amount is minimized.Liquid adhesive is injected a gas into by the blender that foams, routinely, foaming blender is to need significantly manufacture The large equipment in space.Then, foam glue is stacked into a kind of pattern on relatively large package combination region.As The result of big calmodulin binding domain CaM is used in packaging field, the pinpoint accuracy of adhesive and accurate control are no longer that important design considers Factor.More specifically, in most cases, foam glue is all sprayed with wide pattern, its not by air assisted, rather than Discharged foam glue as the silk moved by plant air.In addition, the strong combination formed between big calmodulin binding domain CaM is not It is the significant design Consideration of packaging field again.For the purpose, plant air is bonded with foam in these coatings Agent is used together, it is possible to use the plant air stream of relatively low speed, to control the foam glue silk in packaging field Flight.Thus, due to the plant air of low velocity, so minimizing using packaging field caused by low density foam adhesive In any " flight " and " shooting " problem.

Dispensed adhesive onto however, working as in the elastic strands used in disposable absorptive personal hygiene products or nonwoven When on substrate, these insufficient control adhesive filaments of low velocity plant air stream.Moreover, it is believed that and compared with the adhesive of low-density, Such as foam glue, which is used together high speed plant air stream, will cause significantly " flight " and " shooting ", and this causes disposably Low creep resistance and/or bad Edge position control in absorbability personal hygiene products field.In addition, conventional foaming blender is big Size prevents manufacturer from will foam blender extremely adjacent to adhesive applicator positioning, but expects in non-woven fabric coating such Positioning.As a result, foam glue has not been used in the manufacture of disposable absorptive personal hygiene products.

Therefore, exist in the manufacture of disposable absorptive personal hygiene products to a kind of following adhesive distribution method Demand, this method provides the creep resistance improved in characteristic, including obtained product, power and shunk and pliability.

The content of the invention

In one embodiment of the invention, a kind of method for manufacturing disposable absorptive personal hygiene products includes mixing Gas-pressurized and hotmelt, to form foam glue.Towards the elastic strands discharge foam glue silk of stretching.With height Rate process air impact foam glue silk, so that the silk is moved.Foam glue silk is deposited in the elastic strands of stretching, Expanded so as to the volume of foam glue in the elastic strands of stretching.This method also includes the bullet of stretching with foam glue Property strands are fixed to the first flat substrate part.

On the one hand, plant air is multiple air-sprays, and the multiple air-spray is directed to apply silk spiral fortune It is dynamic.Because adhesive filament is with screw movement and elastic strands are movably faster than silk, so adhesive filament is in the first contact The elastic strands of contact stretching at point and the second contact point, and start the elastic strands of winding stretching, and in the first contact Stretched between point and the second contact point.At this point, tensile elasticity strands make foam glue silk acceleration so that silk is by thin fine Tie up and form topical adhesive block at the first make contact and the second contact point of section separation, wherein the bullet stretched with adhesive bond Property strands, the fine fibre section fracture.When fine fibre section is broken, half portion or section on the either side of fracture are towards corresponding first Contact point and the second contact point recover rapidly, and the elastic strands that winding is stretched at contact point, to form topical adhesive Block, the topical adhesive block is configured to be changed into discrete knot when the elastic strands of stretching are fixed into the first flat substrate part Chalaza.By adhesive-free or the stretching with minimum adhesive material the discrete binding site of elastic strands section separation, so as not to The elastic strands of stretching are rigidly bound to the first flat substrate part between discrete binding site, therefore make stretching in section The elastic force of elastic strands is maximized.

During flying and before being stacked into the elastic strands of stretching, the volume of foam glue starts expansion.In addition, This method includes, and during flying and after being stacked into the elastic strands of stretching, makes the volumetric expansion of foam glue always swollen Swollen at least 14%.On the other hand, plant air includes the multiple air-sprays guided in the following manner, i.e., apply basic to silk Move forward and backward or any desired type of sports.The amount of the gas-pressurized mixed with the hotmelt of predetermined can be increased, with Foam glue is by the gas release of experience after increase discharge.The foam of the increase causes to be fixed to the first flat substrate part Afterwards, the creep resistance increase of the elastic strands of stretching.More specifically, the mixing of gas-pressurized and hotmelt may include enough The gas-pressurized of amount, with least 26% overall expansion of the volume for producing the foam glue being stacked into the elastic strands of stretching, And it is preferably enough to produce at least 34% overall expansion of the volume of foam glue.The expansion, which is provided, expects creep resistance, such as Weight is added for industrial standard, its creep is less than 10%.

This method also includes the elastic strands and that the second flat substrate part is fixed to stretching by foam glue One flat substrate part.In certain embodiments, the first flat substrate part and the second flat substrate part can be arranged to single Only substrate, and alternatively, in other embodiments, the first flat substrate part and the second flat substrate can be set It is set to the unitary part of single flat substrate（For example, itself is folded）.Disposable absorptive personal hygiene products include wherein In the embodiment of the elastic strands of many stretchings, this method includes many foam glue silks of discharge, and in adhesive filament heap Before product is in the elastic strands of many stretchings, the silk is influenceed by plant air.

In another embodiment of the invention, a kind of method for manufacturing disposable absorptive personal hygiene products includes mixing Gas-pressurized and hotmelt, to form foam glue.Towards the first flat non woven substrate discharge foam glue silk.With High speed plant air influence foam glue silk, so that the silk is moved.Penetrated for example, plant air is multiple such air Stream, it is asymmetrically guided towards each other, to produce the random adhesive pattern on non-woven lining bottom.Alternatively, Plant air is multiple such air-sprays, and it produces the spiral string-like adhesive pattern on non-woven lining bottom.Foam glue Silk is deposited on the first flat non woven substrate, is expanded so as to the volume of foam glue on the first flat non woven substrate.We Method also includes the first flat non woven substrate is fixed into the second flat non woven substrate by foam glue.

On the basis of with reference to the detailed description below in association with the exemplary embodiment of accompanying drawing, ordinary skill people Member is by clearer various other feature and advantage of the invention.

Brief description of the drawings

Fig. 1 is the perspective schematic view of the disposable absorptive personal hygiene products during various parts are assembled.

Fig. 2 is the perspective view for the foam glue for being applied to elastic strands.

Fig. 3 is the perspective view for the foam glue for being applied to many elastic strands.

Fig. 4 is performed for a kind of schematic diagram of one embodiment of adhesive dispensing systems of the method for the present invention.

Fig. 5 is the cross-sectional side view of the exemplary foaming blender used in Fig. 4 adhesive dispensing systems.

Fig. 6 is used in Fig. 4 adhesive dispensing systems for producing foam as shown in Figure 3 in elastic strands The perspective view of the exemplary adhesive applicator of adhesive pattern.

Fig. 7 is the enlarged perspective of Fig. 6 adhesive applicator.

Fig. 8 is the rearview of Fig. 6 adhesive applicator, and it shows the interior flow diameter of adhesive and plant air.

Fig. 9 is to show, when the adhesive dispensing systems using Fig. 4, the creep resistance of various adhesive blowing levels and to add The diagram of the test result of add weight.

Figure 10 is the top view for the foam glue for being applied to flat substrate.

Figure 11 be along used in Fig. 4 adhesive dispensing systems be used for foam as shown in Figure 10 is produced on substrate First cross-sectional side view of the line 11-11 interceptions in the another exemplary adhesive applicator in Figure 13 of adhesive pattern.

Figure 12 be along Figure 11 adhesive applicator in fig. 13 line 12-12 interception the second cross-sectional side view.

Figure 13 is the bottom view of Figure 11 adhesive applicator.

Embodiment

Fig. 1 is shown with an implementation of the exemplary process manufacture disposable absorptive personal hygiene products 10 of the present invention Example.Shown disposable absorptive personal hygiene products 10 are disposable diaper 10, and it includes the waist for being configured to wind user The narrow central portion 16 that extends between two legs of user of the end 14 of first end 12 and second and being configured to.Diaper 10 includes： Flat non woven substrate portions 18（Hereinafter the first substrate 18 or flat non woven substrate 18）；Leg goffering 20, it is in first end 12 and second form along the side longitudinally in each 22,24 of diaper 10 between end 14；And the second flat substrate part 26（Hereinafter Second flat substrate 26）, it is fixed to non-woven lining bottom 18, to close leg goffering 20.By being fixed to extended state The elastic formation of the strands 28 leg goffering 20 of the one or more root at non-woven lining bottom 18, to be provided around the leg of user to diaper 10 Elasticity.As illustrated, in the embodiment shown, the second flat substrate 26 is the substrate separated with flat non woven substrate 18.However, It should be understood that alternatively, in other embodiments, the second flat substrate 26 can be the folding part of flat non woven substrate 18 （It is not shown）.Non-woven lining bottom 18, the substrate 26 of leg goffering 20 and second are fixed to one another by hotmelt 30.

The various benefits in manufacture and use in order to realize diaper 10, by gas-pressurized, such as nitrogen injection hot melt is viscous Mixture 30, to form foam glue 30, then distributes adhesive 30 the elastic strands 28 on non-woven lining bottom 18 or stretched On.Figure 2 illustrates exemplary accumulation of the foam glue 30 in elastic strands 28, many are deposited in figure 3 illustrates it In elastic strands 28, it is deposited in figure 10 illustrates it on non-woven lining bottom 18.There is provided and retouch in further detail below in Fig. 4 The schematic diagram of adhesive dispensing systems 50 is stated, the system is configured to produce these exemplary accumulations of foam glue 30.

With reference to Fig. 2, foam glue silk 30 leaves jet expansion 32 under pressurised conditions so that foam glue silk 30 exists Soon substantially similar liquid adhesive pearl after discharge.However, as shown in Figure 2, once being discharged from jet expansion 32, foam glues The volume of mixture 30 begins to expansion.By air-spray influence foam glue silk 30, with cause foam glue silk 30 with Substantially screw is moved, and is wrapped in the elastic strands 28 that the side of arrow 34 is moved up.As shown in Figure 2, when being applied When applying to the elastic strands 28 faster moved, foam glue 30 accelerates and stretched, and this causes the formation of foam glue 30 logical Cross the increase adhesive block 35 of multiple regional areas of the connection of more filament section 36 of adhesive.In preferred operations, these are thinner Silk section 36 will be broken between adjacent block 35, do not leave adhesive between topical adhesive block 35.By elastic strands 28 During being bound to substrate 18, these topical adhesive blocks 35 are changed into discrete binding site, this advantageously provide desired power shrink and Creep resistance characteristic.

Before and after foam glue silk 30 is deposited in elastic strands 28, occurs the volume of foam glue 30 Expansion.It is used as the result of the nitrogen expansion in hotmelt 30, after being discharged from jet expansion 32, foam glue silk 30 Cumulative volume increases up to 100%（For example）.At this point, foam glue silk 30 is than the binder liq pearl with same volume Density is small by most 50%.It should be understood that in other embodiments of the invention, foam glue silk 30 can be stacked on many and put down The elastic strands 28 of capable stretching（That is, at least two elastic strands 28）On, thus claims hereof is not limited to list Root foam glue silk 30 is deposited on individual strands stock 28.It will also be appreciated that as shown in Figure 2, by the heap of foam glue 30 Product can cause foam glue 30 substantially completely to be contacted with elastic strands 28 in elastic strands 28, but in other embodiment In, the winding in elastic strands 28 or accumulation may also lead to following situations, i.e. foam glue 30 only with elastic strands 28 Localized contact, and another part of foam glue 30 is sagging from elastic strands 28.

With reference to Fig. 3, many parallel flexible strands that the direction that foam glue 30 can be deposited in shown in arrow 34 is moved On 28.With it is above-mentioned foam glue 30 is deposited in it is similar on individual strands stock 28, every foam glue silk 30 all by from Corresponding jet expansion 32 is discharged, once and displaced volume begins to expansion.Once it is stacked on corresponding elastic strands 28 On, every foam glue silk 30 is just again speeded up so that foam glue 30 is stretched, and many of silk section separation are disconnected to be formed The increase adhesive block 35 of individual regional area.When adhering to substrate 18, these adhesive blocks 35 advantageously generate every elasticity The discrete binding site of strands 28.It should be understood that in the other embodiment for meeting the present invention, single foam glue silk 30 can be across The excessive elastic strands 28 of root are moved with rotary motion, to form these discrete binding sites.Elastic strands are applied to except reducing Outside the cumulative volume of 28 adhesive 30, proved below with reference in the test result described in Fig. 9, compared with liquid adhesive, Foam glue 30 unexpectedly shows the creep resistance of raising.Therefore, substantially reduction is viscous for the distribution system and method for present application Mixture is added and manufacturing cost, while improving and/or maintaining and be required in disposable absorptive personal hygiene products field Bond quality.

As briefly mentioned above, Fig. 4 shows the adhesive dispensing systems for distributing one or more root foam glue silk 30 50 exemplary embodiment.Adhesive dispensing systems 50 may include following part, such as Ohio, USA West Lake city Nordson companies marketsSpray nozzle andNozzle, however, it is understood that without departing from the present invention Scope in the case of, any kind of spray nozzle can be used.Adhesive dispensing systems 50 include foaming blender 52, the foaming Blender 52 is connected to adhesive source of supply 54 and gas-pressurized source of supply 56.Foaming blender 52 can be used to the gas that pressurizes Body is mixed into hotmelt or gas-pressurized is injected into hotmelt.Foaming blender 52 is attached to measuring pump 58 and bonding Agent distributor or applicator 60.Measuring pump 58 supplies the amount of the foam glue 30 through metering to applicator 60, while by residue Foam glue 30 is recirculated back to foaming blender 52.Thus, the foam glue 30 in measuring pump 58 passes through the blender that foams 52 keep pressurization and by continuous supplementation.Applicator 60 discharges foam glue 30 and plant air, with such as above with reference to Fig. 2 and figure Described in 3, desired accumulation of the foam glue 30 on non-woven lining bottom 18 or elastic strands 28 is produced.

In one embodiment, the United States Patent (USP) No.7 that foaming blender 52 is Ganzer et al., described in 703,705 Blender, using its entire disclosure as being incorporated herein by reference.The exemplary implementation of foaming blender 52 is also showed that in Figure 5 Example.Foaming blender 52 includes：Hybrid ontology 102, it has side wall 104；Tubulose mixing chamber 106, it is limited by side wall 104； And mixer element 108, it is located inside mixing chamber 106.Pass through heater（It is not shown）Such as it is embedded in the cylinder in side wall 104 Formula stratie carrys out heating mixer 52.Using from conventional temperature sensor（It is not shown）, such as resistance temperature detection The feedback control heater of device, electro-hot regulator or thermocouple.Heater ensures to keep the adhesive material in blender 52 To be distributed by applicator 60 in acceptable temperature range.

In an example, foaming blender 52 receives Bostik2861 hotmelts and the nitrogen supplied in about 50psi. Foaming blender 52 is maintained at about 315 degrees Fahrenheits, and it is run with about 600rpm so that and foam glue 30 is about Foaming blender 52 is left under 900psi pressure.Set by these, when adhesive dispensing systems 50 are applied to elastic strands 28 When applying adhesive, foaming blender 52 can be used to every meter of elastic strands 28 and discharge about 20-45 milligrams of adhesive.

The blender 52 that foams includes adhesive ingress port 110, and it leads to mixing chamber 106.For example, by be threadedly engaged The union elbow 112 that mode is arranged in adhesive ingress port 110 and the supply hose for being connected to union elbow 112（Do not show Go out）, adhesive source of supply 54 couples with the fluid flow communication of adhesive ingress port 110.In mixing chamber 106 and adhesive source of supply Flow control element, such as spring-loaded check valve 114 are positioned between 54 in adhesive ingress port 110.With conventional structure The check-valves 114 made prevents that inflating adhesive material penetrates into union elbow 112 and be transported to the upstream of adhesive source of supply 54.

The blender 52 that foams also includes the gas inlet port towards mixing chamber 106（It is not shown）.Gas supply source 56 with Gas inlet port fluid flow communication couples.Adhesive ingress port 110 that can be in hybrid ontology 102 arranges gas access Port.The blender 52 that foams also includes measurement port 116, and the measurement port 116 relatively extends with adhesive ingress port 110 Into mixing chamber 106.Measurement port 116 receives bend pipe connector 118, and the bend pipe connector 118, which is configured to receive, to be used to survey Measure the pressure gauge of the pressure in mixing chamber 106（It is not shown）.What foaming blender 52 included extending in mixing chamber 106 goes out for a pair Mouth port 122.In Figure 5, one outlet port 122 is inactivated, and is closed with plug 124, and another outlet port 122 receive the union elbow 126 towards measuring pump 58 and applicator 60.Therefore, as indicated by the arrows 128, adhesive material is viscous Enter foaming blender 52 at mixture ingress port 110, and as indicated by arrow 130, foaming is left at outlet port 122 mixed Clutch 52.

Mixer element 108 includes：Central shaft 132, it passes through the Longitudinal extending of mixing chamber 106；Cylindrical body 134, its By rigid attachment to be rotated together with central shaft 132；And fin 136, it is from cylindrical body 134 towards mixing chamber 106 Side wall 104 to align inner surface 138 outstanding.Central shaft 132 includes：First end 140, it is positioned adjacent to outlet port 122； And second end 142, it is positioned adjacent to adhesive ingress port 110.The first end 140 of central shaft 132 is supported for by mixed The bushing or bearing 144 closed in room 106 rotates relative to side wall 104.Thrust bearing 146 in bushing 144 is assemblied in center Axle 132 provides thrust loading support.Bushing 144 and thrust bearing 146 are fitted together, and with conventional threaded fastening Both of the above is fixed to hybrid ontology 102 by part.

Second end 142 of central shaft 132 is located at another in mixing chamber 106 by the neighbouring ground of adhesive ingress port 110 Bushing 148 is protruded.Another thrust bearing 150 provides thrust loading support to the second end 142 of central shaft 132.Central shaft 132 Second end 142 is coupled by connection element 152 with the drive shaft 154 of motor 156.Connection element 152 and neighbouring connection element 152 Thrust bearing 150 formed by the material with low heat conductivity, to reduce the heat transfer from hybrid ontology 102 to motor 156. Also by the stand-off 158 for separating motor 156 with hybrid ontology 102 by motor 156 and the heat insulation of hybrid ontology 102.Gap Device 158 includes the slit 160 for promoting cooling.Motor 156 drives the dynamic rotation of the drive shaft 154 and central shaft 132, with relative Fin 136 is moved in the side wall 104 of mixing chamber 106.

Adhesive material is limited in inside the mixing chamber 106 in the region between bushing 144,148.Bushing 144,148 Including various containment members, the containment member helps to constrain in fluent material inside mixing chamber 106.With conventional fastener Hood 164 and cap 166 are fixed to hybrid ontology 102, and hybrid ontology 102 is relatively protectively covered with motor 156.

Length of the fin 136 along cylindrical body 134 on mixer element 108（And the length of central shaft 132）Into Row distribution.The end of each fin 136 and the formation dead air space of side wall 104.As fin 136 rotates, mixing chamber is sent to Adhesive material and gas-pressurized in 106 are forced through the gap between adjacent fins 136, for by gas and adhesive material Material mixes, stirs and stir into foam glue 30.Therefore, rotation of the fin 30 relative to fixed sidewall 104 can be used to Gas and adhesive are repeated to be divided into rill, and then reconfigured the stream, to produce the substantially equal of gas and adhesive Matter mixture or intermixture, wherein gas-pressurized exist in solution.

The fin 136 that the initial continuous helical shape screw thread extended by the length along cylindrical body 134 is made limits spiral shell Shape arrangement is revolved, the same length along cylindrical body 134 of the helix shape is wound.With being run by motor 156, blender The central shaft 132 of element 108 continuously rotates, and the helix shape of fin 136 tends to promote viscous towards adhesive ingress port 110 Mixture material, its flow forward with the gas towards outlet port 122/adhesive intermixture is reverse.Therefore, foam blender 52 can be used to measuring pump 58 and the supply foam glue 30 of applicator 60.In addition, foaming blender 52 is than many routines The blender size that foams is small, and this makes it possible to extremely position foaming blender 52 adjacent to measuring pump 58 and applicator 60.

Measuring pump 58 can be and the Nordson companies markets in Ohio, USA West Lake cityMeter is together The pump used.Measuring pump 58 is run with such rotating speed, and it is similar to the rotating speed that uses during metering liquid adhesive, this be because It is substantially liquid for the pressurized foaming adhesive 30 in measuring pump 58.For example, foam glue 30 can be with about 900psi in hair Steep and circulated between blender 52 and measuring pump 58, to keep substantially liquid, discharged until from applicator 60.Then, measuring pump 58 The supply of foam glue 30 through metering is sent to an applicator 60 described below.It should be understood that in other embodiments Different types of pump can be used.

In one embodiment, applicator 60 is Harris et al. United States Patent (USP) No.7, the spiral described in 578,882 Shape distribute module 202, its entire disclosure is incorporated herein by reference.The reality of distribute module 202 is also shown in Fig. 6-Fig. 8 Apply example.

With reference to Fig. 6 and Fig. 7, distribute module 202 includes module body 204, and the module body 204 includes centre body section 206 and lower body portion 208.Module 202 also includes being used for the clamping or quick that nozzle 212 is connected to lower body portion 208 Separating mechanism 210.It should be understood that centre body section 206 may include valve rod 206a, valve rod 206a with lower body portion 208 The valve seat 208a engagements of formation, to control the flow towards the hotmelt in the passage 208b of nozzle 212（In other implementations In example, the other positions that valve rod and valve seat may be alternatively located in distribute module 202）.In Gressett, Jr et al. United States Patent (USP) No.6, further describes the active trip 210 in 619,566, its entire disclosure is incorporated herein by reference.Nozzle 212 each service duct from positioned at lower body portion 208（208b, it is not shown）Receive pressurized foaming adhesive 30 and pressurization Plant air.

With reference now to Fig. 7 and Fig. 8, wherein exemplary nozzle 212 is shown in further detail.As in United States Patent (USP) No.6,619,566 It is described more fully, nozzle 212 includes inclined cam face 214,216, to promote coupling for nozzle 212 and distribute module 202. Nozzle 212 includes the first side 218, and the first side 218 is configured to be attached to the bottom 208 of distribute module 202.Wrap the first side 218 Adhesive supply port 220 and at least one plant air supply port 222 are included, its bonding corresponding in distribute module 202 Agent service duct and air feed passage matching.Nozzle 212, which is limited, includes the approximate wedge shape horizontal stroke of the second side 226 and the 3rd side 228 Section.Multiple frusto-conical protrusions 230 extend from the second side 226 of nozzle 212, and each projection 230 is convex including being arranged in Play the adhesive discharge outlet 232 on 230 distal end.Adhesive discharge outlet 232 connects with the fluid of adhesive passing away 234 Logical, adhesive passing away 234 is then connected with adhesive supply port 220.At least a portion of adhesive passing away 234 It is oriented to and at an acute angle parallel to the planar shaped of the first side 218, and it is thus generally shown with strands 28 with arrow 34 Mobile corresponding direction forms certain angle.The adhesive passing away 234 of exemplary embodiment is tilted about to the first side 218 20 °, therefore substantially distribute foam glue 30 to elastic strands from adhesive discharge outlet 232 on the direction that strands are moved 28。

Second side 226 of nozzle 212 also includes multiple air discharge outlets 236, and it is adjacent to each adhesive discharge outlet 232 and it is in fluid communication with air discharging channel 238,240, the first side 218 of air discharging channel 238,240 and nozzle 212 On air supply port 222 connect.In exemplary nozzle 212, at the base portion of frusto-conical protrusion 230, with around every The generally square pattern of individual adhesive discharge outlet 232 arranges four air discharge outlets 236.The sky of exemplary nozzle 212 Gas passing away 238,240 is angled on corresponding adhesive passing away 234, so as to the high speed shown in arrow 242 The discharge foam glue silk 30 that degree plant air jet was directed to and come Autoadhesive discharge outlet 232 is tangent.It is each empty Gas discharge outlet 236 is all located at the same radial away from the common center limited at the position of individual adhesive discharge outlet 232 At distance.Therefore, plant air jet is in the roughly the same of the downstream of adhesive discharge outlet 232 and air discharge outlet 236 At position, around the tangentially rotation of foam glue silk 30 of discharge.It will be understood by those skilled in the art that logical by adjusting air discharge Offset spacers and direction of the road 238,240 relative to adhesive passing away 234, may change the mobile pattern of silk.In one kind In substitute mode, plant air includes at least two air-sprays guided in the following manner, i.e., it produces substantially front and rear to silk The influence of motion.

Nozzle 212 also includes notch 250, and the notch 250 is formed in one end relative with the first side 218 of nozzle 212, And neighbouring adhesive discharge outlet 232, to guide elastic strands 28 to pass through the sky being arranged on the second side 226 of nozzle 212 Gas discharge outlet 232 and adhesive discharge outlet 236.Shown as apparent in Fig. 8, notch 250 is in the second side of nozzle 212 226 and the 3rd extend between side 228.Notch 250 is guided positioned at every elasticity of the corresponding lower section of adhesive discharge outlet 232 Strands 28.In the exemplary embodiment, the second side 226 and the 3rd side 228 are configured to form acute angle with the first side 218.One In individual exemplary embodiment, the second side 226 and the first side 218 form about 60 ° -80 ° of angle.In another aspect of this invention, 3rd side 228 and the first side 218 form no more than about 70 ° of angle.Advantageously, the angle of the 3rd side 228 promotes in elastica The knot formed in stock 28 passes through, without causing elastic strands 28 to be broken.

In operation, elastic strands 28 are received in each notch 250, and elastic strands 28 are shown in arrow 34 Side is moved up.With elastic strands 28 under adhesive discharge outlet 232 through big from each adhesive discharge outlet 232 Cause towards the corresponding elastic distribution of strands 28 foam glue silk 30, so as to which its at least part is deposited in elastic strands 28. More specifically, foam glue silk 30 can be accumulated with completely attaching to elastic strands 28, or it can be connect with the elastic part of strands 28 Touch, the other parts of foam glue 30 are sagging from elastic strands 28.Pressing technology air is discharged from air discharge outlet 236, And as indicated by the arrow 242, it is tangentially guided substantially towards foam glue silk 30.As silk is deposited in elastic strands 28 On, pressing technology air makes foam glue silk 30 be moved with screw.Such as described in more detail above, elastic strands 28 make silk 30 accelerate, and stretch adhesive filament 30 and form discrete adhesives block 35, when elastic strands 28 adhere to substrate 18, Discrete adhesives block 35 forms discrete binding site.As shown in figures 6 and 7, the volume of foam glue silk 30 is in elastic strands Expanded on 28.Then, elastic strands 28 get out be fixed to another substrate in disposable absorptive personal hygiene products 10, Leg goffering such as to form diaper 10.

As described above, highly pressurize and remain close to liquid form by foam glue 30, until from the row of applicator 60 Go out.Thus, when plant air influences or tangential contact or moves discharge foam glue silk in-flight otherwise When 30, the volume incomplete expansion of foam glue 30.As a result, the density of foam glue 30 is kept high enough to avoiding technique Flight or shooting caused by the high pressure of air.Even if in addition, foam glue 30 begun to before elastic strands are stacked into it is swollen Swollen, foam glue 30 still awing keeps enough globalities, to avoid flicking from elastic strands.Foam glue silk 30 Still can fully and accurately it control, to be deposited in elastic strands 28 with the desired pattern similar to liquid hot melt adhesive filament On.

When the elastic strands 28 of one or more root are bound into non-woven lining bottom 18 using foam glue 30, foam bonding The bond quality that agent 30 shows is substantially similar to the bond quality of liquid adhesive formation.For example, using the foam of same volume Adhesive 30 and liquid adhesive cause the creep resistance of essentially identical level.In addition, during combination, foam glue 30 after The continuous discrete binding site formed along elastic strands 28, this provides high-tensile strength and shrinks quality.Include liquid in view of foam glue 30 The hotmelt of about half normal amount of adhesive, so compared with conventional design, improving the pliability or hand of diaper 10 Sense.The expansion of foam glue 30 is effectively formed the network structure of hotmelt and gas, once it is deposited in elastic strands On 28, the network structure just effectively adheres to elastic strands 28.

In another related example, a greater degree of foaming of adhesive 30 is carried for same amount of addition binder wt For the creep resistance of raising.With reference to Fig. 9, test result is shown, in operation, is improved by applying more foams to adhesive Creep resistance amount.At this point, Fig. 9 includes chart 280, and it represents that the relative addition with every meter of elastic strands 28 of milligram is bonded The average creep percentage of agent weight measurement.It was delayed the timeliness phase at 28 hours after elastic strands 28 to be bound to non-woven lining bottom 18 After carry out creep measurement, and for foam levels different in foam glue 30（0% or liquid adhesive, 14%, 26% and 34%）, various data points are drawn on chart 280（It is not shown）.By " % foams ", percentage shown in this figure is meant During or after being stacked into elastic strands 28, the overall volume expansion percentage of foam glue experience.Although industrial standard is added Scope is about every meter of 35-50 milligrams, but also provides the test result inside and outside the critical field, so as to produce Trendline 290a, 290b, 290c, 290d, to improve the different foam levels illustration of foam glue 30.

As shown in chart 280, within the delay sampling timeliness phase of 28 hours, more foams are added to foam glue 30 Significantly improve obtained creep resistance.For the purpose, scope, liquid adhesive are added for industrial standard（0% foam）'s First trend line 290a shows about 25% relatively high creep, and in the range of industrial standard addition, the second trend of 14% foam Line 290b reduces creep, shows that it declines towards 15%.Shown in the test result, the 3rd Trendline 290c of 26% foam enters One step reduces creep compliance, and in the range of industrial standard addition, the 4th Trendline 290d of 34% foam realizes ideal creep amount （For example, less than 10%）.Therefore, enough gas-pressurizeds are provided in foam glue 30, with formation at least 26% foam or total Volumetric expansion, or even more preferably form at least 34% foam, this for each strands length binder wt, in industry The creep resistance of aspiration level is provided in standard addition scope to most of applications.It should be understood that for one in other embodiment A little adhesives, specific foam percentage and the creep resistance level realized can be based on materials variances changes.However, for all Test material, for same amount of addition weight, by improving the gas-pressurized volume production being present in liquid hot melt adhesive Raw foam volume increase will cause improved creep resistance.Thus, when improving creep resistance, propose the foaming of foam glue 30 Unexpected benefit is supplied, while keeping high bond quality.

In addition, the expansion of foam glue 30 causes the most external or exterior layer of adhesive material more rapidly to cool down, thus Reduce the possibility that foam glue 30 burns the second substrate 26.More specifically, foam glue keeps warm enough, to be formed Reliable adhesive between the element of diaper 10 is combined, while cooling enough, to avoid burning on temperature sensitive substrates. In addition, test has revealed that following unexpected benefit, i.e., reduce pressure clamp or pressure roll needs using foam glue 30 Apply to produce the high quality bond between elastic strands 28 and substrate 18 clutches pressure.Thus, pass through the viscous of the present invention Mixture distribution system 50, using the pressure clamp with low-force.

Another embodiment with reference to shown in Figure 10, many foam glue silks 30 leave corresponding spray under pressurised conditions Mouth is exported（It is not shown）, to be discharged once from jet expansion, foam glue silk 30 is with regard to similar liquids adhesive pearl. Discharge the plant air of multiple air jet forms, and before foam glue silk 30 is deposited on non-woven lining bottom 18 to Prestige mode moves foam glue silk 30.Substrate is moved up in the side of arrow 34.Plant air can be used to produce silk Any desired motion, including but not limited to random motion or screw.In this embodiment, such as the bonding on non-woven lining bottom 18 Shown in the random pattern of agent, plant air applies random motion to every foam glue silk 30.As shown in Figure 10, foam glues Length of the mixture 30 along substrate 18 forms increase or the overlying adhesive block 35 of many regional areas.Combined by elastic strands 28 During substrate 18, these topical adhesive blocks 35 are changed into discrete binding site, and this advantageously provides the enough of obtained combination Power is shunk and creep resistance quality.Similar to the embodiment of the elastic strands shown in Fig. 2 and Fig. 3, discharged from jet expansion Afterwards, the volume of foam glue 30 immediately begins to expansion, and during flying and after being deposited on non-woven lining bottom 18, foam At least the 14% of the volume of adhesive 30 increase total amount.In addition, foam glue 30 produces the complete enough of substrate 18 by less addition All standing and relatively thin full bond agent coating.

In another embodiment, applicator 60 includes Bondeson et al. U.S. Patent Publication No.2010/0327074 Described in distribution nozzle 302, the entire disclosure is incorporated herein with reform.Also shown in Figure 11-Figure 13 point The exemplary embodiments with nozzle 302.

With reference to Figure 11 and Figure 12, nozzle 302 includes the first plant air backing plate 304 and the second plant air backing plate 306, glued The separation backing plate 310 and second separation backing plate 312 of mixture backing plate 308, first and the end plate 316 of first end plate 314 and second.Pass through A pair of threaded fasteners 317 keep the whole component with plate 304,306,308,310,312,314,316, and this pair threaded Fastener 317 extends through first end plate 314（And backing plate 304,306,308,310,312）In corresponding hole body, and prolong Reach in the screwed hole in the second end plate 316.Backing plate 304,306,308,310,312 is from the end plate of first end plate 314 to the second 316 Order of placement it is as follows：First plant air backing plate 304（Neighbouring first end plate 314）, first separation backing plate 310, adhesive pad Plate 308, second separates the plant air backing plate 306 of backing plate 312 and second（Neighbouring second end plate 316）.Second end plate 316 is also wrapped Include the projection 318 as align member, the projection 318 extends through air shim plate 304,306, separation backing plate 310,312 and viscous Respective upper slit 320 in mixture backing plate 308.Then, projection 318 is received in the blind hole 322 in first end plate 314.

First end plate 314 is for generally L-shaped member and including top surface 326, and top surface 326 is substantially with including first The plant air backing plate 306 of plant air backing plate 304 and second, the separation backing plate 310 of adhesive backing plate 308 and first and second point Plane from backing plate 312 is orthogonal.Substantially the side table parallel with the plane comprising these identical backing plates 304,306,308,310,312 Face 328 receives threaded fastener.Top surface 326 includes adhesive entrance 330 and plant air entrance 332.First end Plate 314 is additionally included in the projection 334,336 of the opposed extension at top surface 326, it is well known that it can be used for nozzle 302 It is fixed to distributing valve or module 337a.Distribute module 337a includes valve rod 337b, and valve rod 337b can be engaged with valve seat 337c, with Control enters the hot melt adhesive agent flux of the adhesive entrance 330 of nozzle 302.

With reference to Figure 11, first end plate 314 includes the plant air access road 338 connected with plant air entrance 332.Work Skill air inlet passage 338 is connected with the first air distribution channel 340 and the second air distribution channel 342, the distribution of the first air Opposite side of the air distribution channel 342 of passage 340 and second respectively with backing plate assemblies 304,306,308,310,312 is connected.The One air distribution channel 340 passes through backing plate assemblies 304,306,308,310,312 at alignment hole 344, then passes through the second end Vertical recessed 346 in plate 316, finally enter the horizontal-extending slit 348 in the second end plate 316.From the distribution of the first air The respective air slit that the plant air of passage 340 enters in the second plant air backing plate 306 is to 350,352（Figure 13）.Second Air distribution channel 342 is extended in horizontal-extending recessed 354 in first end plate 314.From the second air distribution channel 342 Plant air enter the first plant air backing plate 304 in respective air slit to 356,358（Figure 13）.Below with reference to Figure 13 The arrangement of air slot 350,352,356,358 is more fully described.

With reference to Figure 12, first end plate 314 includes the adhesive access road 362 connected with adhesive entrance 330.It can be used Containment member 364 in groove 366 is sealed in the adhesive entrance 330 at top surface 326.Adhesive access road 362 connect with the adhesive distribution passage 368 and upper level slit 370 in first end plate 314.The upper level slit 370 Pass through the corresponding alignment hole body 372,374 and adhesive backing plate in the first plant air backing plate 304 and the first separation backing plate 310 308 connections.Adhesive backing plate 308 includes multiple adhesive slits 376, and each of which all has adhesive entrance 378 and adhesive Outlet 380.It should be understood that the second plant air backing plate 306 also includes adhesive hole body 372, to allow the first plant air backing plate 304 and the second complete interchangeability between plant air backing plate 306.However, in fig. 12 in shown embodiment, preventing Adhesive hole body 372 in two plant air backing plates 306 is used by the second separation backing plate 312.Using separating backing plate 310,312, So that corresponding air slot 350,352,356,358 and adhesive slit 376 to be sealed off.

Each adhesive slit 376 is generally within the first plant air backing plate 304 and the second plant air backing plate 306 Respective air slot set 350,352,356,358 center.Thus, as shown in figure 13, by the second plant air backing plate 306 Each pair air slot 350,352 all guide for the respective air slit in the first plant air backing plate 304 to 356,358 pairs Together, so as to the individual adhesive outlet 380 in adhesive backing plate 308.Although not shown clearly in Figure 13, air is narrow Groove 350,352 is assembled towards each other along its length, and air slot 356,358 is assembled towards each other along its length so that from each pair The plant air that air slot 350,352,356,358 sprays is structured to intersect.However, air slot 350,352,356, The 358 adhesive outlets 380 not associated towards them are assembled, because corresponding slit is each to 350,352,356,358 It is contained in the parallel plane different from the plane comprising adhesive slit 376.

In operation, pressurization high speed plant air is sent to nozzle 302 at plant air entrance 332, then from the Respective air slit 350,352,356,358 in one plant air backing plate 304 and the second plant air backing plate 306 is arranged Go out.Pressurized foaming adhesive 30 is sent to nozzle 302 at adhesive entrance 330, then by it at adhesive outlet 380 Discharged from individual adhesive slit 376.It should be understood that depending on the substrate by adhesive 30 is scribbled, can be set along the length of nozzle 302 Put any number of adhesive slit 376 and adhesive outlet 380.

The discharge forced air stream left from each air slot 350 with from being left from each association air slot 352 Reason air stream is assembled and influence is produced on it.In a similar manner, leave the corresponding plant air stream of air slot 356 to from The air-flow that air slot 358 leaves produces influence.These asymmetric influences cause the bubble for the adhesive outlet 380 for leaving association Foam adhesive filament 30 is moved in random direction from side to opposite side or rearwardly and a forwardly.As a result, 30 shapes of foam glue silk Into irregularities as shown in Figure 10, uneven or random pattern.However, the pattern of adhesive 30 is presented to substrate 18 Good Edge position control, because avoiding excessive " flight " or " shooting " during technique is distributed.Such as above with reference to Figure 10 Described, therefore, nozzle 302 can be used to accumulate the foam glue silk 30 of random pattern, and the volume of foam glue 30 exists Increase on non-woven lining bottom 18.In addition, test has revealed that following unexpected benefit, i.e. foam glue 30 than corresponding bonding Agent liquid bead is easier to penetrate into the relatively porous non-woven material of substrate 18.As a result, less adhesive must be needed to add, with and nothing Spin substrate 18 and form abundant combination.Generally speaking, compared with the result presented using liquid adhesive, foam glue 30 is produced The high quality bond controlled with good edge and substantially less adhesive addition.

Although illustrating the present invention by the explanation of its specific embodiment, although and having had been described in considerable detail reality Example is applied, but is not intended to limit or be in any way limited to the details by the scope of accessory claim.Can be individually or with any Various features described herein is applied in combination.Those skilled in the art become readily apparent that additional advantage and modification.Therefore, this hair It is bright that shown and described specific detail, typical equipments and method and illustrative example is not limited in its broader aspect. Therefore, in the case of the scope and spirit without departing from general inventive concept, deviation can be made to the details.

Claims

1. a kind of method for manufacturing disposable absorbability personal hygiene products, the disposable absorbability personal hygiene products Elastic strands and the first flat substrate part including stretching, methods described include：

Gas-pressurized and hotmelt are mixed to form foam glue；

Towards the elastic strands discharge foam glue silk of the stretching；

Discharged foam glue silk is influenceed using high speed plant air, so that foam glue silk is mobile；

Before during flying and in the elastic strands for be stacked into the stretching so that the foam glue volumetric expansion；

Foam glue silk is stacked into the elastic strands of the stretching；

After in the elastic strands for be stacked into the stretching so that the foam glue volumetric expansion；And

The elastic strands of the stretching are fixed to the first flat substrate part using the foam glue.

2. according to the method described in claim 1, wherein influenceing discharged foam glue silk using high speed plant air Also include：

During flying, discharged foam glue silk is influenceed using multiple high velocity air jets, the multiple air is penetrated Stream, which is directed into the silk, applies screw.

3. method according to claim 2, wherein foam glue silk to be stacked into the elastic strands of the stretching On also include：

The foam glue silk is stretched between the elastic strands for being deposited in the stretching are last so that the silk forms local viscous Mixture block, the topical adhesive block is configured to work as is fixed to the first flat substrate portion by the elastic strands of the stretching Timesharing becomes discrete binding site.

4. according to the method described in claim 1, wherein influenceing discharged foam glue silk using high speed plant air Also include：

During flying, discharged foam glue silk is influenceed using multiple high velocity air jets, the multiple air is penetrated Stream is directed into apply to the silk and moved forward and backward.

5. according to the method described in claim 1, wherein, gas-pressurized and hotmelt, which are mixed, also to be included：

The gas-pressurized of sufficient amount and hotmelt are mixed, to produce the institute being stacked into the elastic strands of the stretching State at least the 14% of the overall volume expansion of foam glue.

6. according to the method described in claim 1, wherein gas-pressurized and hotmelt, which are mixed, also to be included：

The amount for the gas-pressurized that the hotmelt of increase and predetermined is mixed, to increase the foam glue in discharge Afterwards by the amount of the overall volume expansion of experience, the elastic strands for thus improving the stretching are being fixed to the first flat substrate portion Creep resistance after point.

7. method according to claim 5, wherein gas-pressurized and hotmelt, which are mixed, also to be included：

The forced air of sufficient amount and the hotmelt are mixed, are stacked into producing in the elastic strands of the stretching The foam glue overall volume expansion at least 26%.

8. method according to claim 7, wherein gas-pressurized and hotmelt, which are mixed, also to be included：

The forced air of sufficient amount and the hotmelt are mixed, are stacked into producing in the elastic strands of the stretching The foam glue overall volume expansion at least 34%.

9. according to the method described in claim 1, in addition to：

The second flat substrate part is fixed to the elastic strands of the stretching and described first flat using the foam glue Flat substrate portions, to close the elastic strands of the stretching.

10. method according to claim 9, wherein the first flat substrate part and the second flat substrate part include The first substrate and the second substrate of separation, and methods described also includes：

Close the elastic strands of the stretching between first substrate and the second substrate.

11. method according to claim 9, wherein the first flat substrate part and the second flat substrate part are single One flat substrate, and methods described also includes：

By the first paragraph of the single flat substrate fold into the stretching elastic strands and the single flat substrate On two sections；And

Close the elastic strands of the stretching between the first paragraph and second segment of the single flat substrate.

12. according to the method described in claim 1, wherein the disposable absorbability personal hygiene products include many stretchings Elastic strands, and methods described includes：

Elastic strands towards described many stretchings discharge many foam glue silks；

The many foam glues silk of discharge is influenceed using high speed plant air, so that foam glue silk is mobile；

In the elastic strands that every foam glue silk in many foam glues silk is stacked into many stretchings It is corresponding one stretching elastic strands on so that the foam glue the stretching elastic strands upper volume expand； And

The elastic strands of described many stretchings are fixed to the first flat substrate part using the foam glue.

13. a kind of method for manufacturing disposable absorbability personal hygiene products, the disposable absorbability personal hygiene production Product include the first flat non woven substrate and the second flat non woven substrate, and methods described includes：

Gas-pressurized and hotmelt are mixed to form foam glue；

Towards the first flat non woven substrate discharge foam glue silk；

Discharged foam glue silk is influenceed using plant air；

, with before being stacked on the first flat non woven substrate, make the foam glue volumetric expansion during flying；

Foam glue silk is stacked on the first flat non woven substrate, so that the foam glue is described the One flat non woven substrate upper volume expands；And

The first flat non woven substrate is fixed to the second flat non woven substrate using the foam glue.

14. method according to claim 13, in addition to：

Discharged foam glue silk is influenceed using plant air, is deposited in producing on the first flat non woven substrate Random adhesive pattern.

15. method according to claim 13, in addition to：

Discharged foam glue silk is influenceed using plant air, is deposited in producing on the first flat non woven substrate Spiral string-like adhesive pattern.

16. method according to claim 13, in addition to：

During flying and after being stacked on the first flat non woven substrate, make the volumetric expansion of the foam glue At least the 14% of overall volume expansion.

17. method according to claim 13, in addition to：

Many foam glue silks are discharged towards the first flat non woven substrate；

The many foam glues silk for influenceing to be discharged using plant air；

Many foam glues silk is stacked on the first flat non woven substrate so that the foam glue is in institute State the expansion of the first flat non woven substrate upper volume.