CN100548832C

CN100548832C - A plurality of compartment pouch with frangible

Info

Publication number: CN100548832C
Application number: CNB2003801070919A
Authority: CN
Inventors: R·A·布尔克; 钟丹尼融都; R·M·埃斯塔布鲁克; D·M·哈姆; J·L·亨德尔森; J·科尼克; 李爱华; J·T·奥利瓦雷斯-科尔多巴; D·L·维西奥利; J·P·凯恩
Original assignee: CONEY COLLINS; EI Du Pont de Nemours and Co; Ocean Spray Cranberries Inc
Current assignee: CONEY COLLINS; Ocean Spray Cranberries Inc; EIDP Inc
Priority date: 2002-12-20
Filing date: 2003-12-17
Publication date: 2009-10-14
Anticipated expiration: 2023-12-17
Also published as: CN1729130A

Abstract

A kind of thin polymer film, a plurality of locellus, pouch, it has internal frangible seal, is used to contain fluid, and the relevant drinking container with re-closable fitment, and it is used for storing and supplying two kinds of differently flavoured liquid or the like.When continuing extruding, the frangible of this transparent plastic material pouch will break, thereby allow differently flavoured inclusion eddy flow and mix in pouch.

Description

A plurality of compartment pouch with frangible

Technical field

The present invention relates to flexible pouch and relevant drinking container, it has internal frangible seal, make can be in pouch blending ingredients.More specifically, and do not limit, the present invention relates to have again the transparent plastic material pouch of closure attachment, it has two kinds of differently flavoured liquid in the locellus that separates, and wherein the extruding of Chi Xuing will make sealing break and differently flavoured liquid eddy flow is arrived together.

Background technology

The flexible plastic pouch that is to use generally known in the art is used to pack variety of food related products, comprises an independent serving.For example, US Patent 5,860,743; 6,076,968 and 6,164,825 disclose stable, flexible, easily open pouch, wherein suction pipe can easily insert pouch by the frangible in the uppermost gusset that prevents to overflow, and pouch can stand on many copline pin.In addition, in US Patent 6,164, two compartment stand-up pouch have been discussed in 822, its material by flexibility forms, be used for two separation, but the neutralization of interconnective locellus stores and the pasty mass that distributes two kinds to separate simultaneously from these two locellus.And, US Patent 5,209,347 disclose the inside W-shape frangible in multicell thermoplastic film packing, so that before dextrose solution and Freamine are mixed for the intravenous injection treatment, their are separated storage.

Also known usually in this area, frangible can be produced between heat sealable film.For example, US Patent 4,539,263 and 4,550,141 disclose the ethylene/acid copolymers (being ionomer) of partly neutralization and the blend of the propylene/acid copolymer of minor amount, and it is used to make heat sealable film and laminated product.Being characterized as in the heat-sealing temperature scope that enlarges of this class formation has almost constant peel strength.This blend can be used for making the flexible film packing of heat-sealing, can change inevitably although be used to produce the heat-sealing temperature of this class packing, and its sealing that has has predictable and constant peel strength.

Summary of the invention

A plurality of compartment beverage pouch with annex of frangible and Reclosable of the present invention can conveniently and inexpensively be the individual serving with multiple flavor beverage of supplying.In principle, the drink pouches of multiple local flavor can be used for sequentially being the individual compound of supplying flavor beverage or flavor beverage.Color and outward appearance by the local flavor liquid that select to separate can obtain exhilarating aesthetics or sensory effects.

Therefore the invention provides flexible a plurality of compartment beverage pouch, it comprises:

(a) first thin polymer film;

(b) second thin polymer film, it is placed on first thin polymer film, wherein first and second thin polymer film mutually directly or the thin polymer film by the 3rd reeve seal indirectly, define the leak free periphery that forms the fully enclosed pouch thus;

(c) be in the fully enclosed pouch the periphery at least one frangible, wherein this frangible is divided into the fully enclosed pouch locellus of separation;

(d) be closed in liquid beverage in one of the locellus of described separation;

(e) be closed in another kind of composition in the locellus of second separation; With

(f) annex.

In an embodiment of a plurality of compartment beverage pouch, be closed in the composition liquid concentrate preferably in the locellus of second separation; Yet considered can with second kind of liquid beverage or even powder or effervesce induce solid as acceptable possibility.

The present invention also provides flexible a plurality of compartment pouch, and it comprises:

(a) first thin polymer film;

(b) second thin polymer film, it is placed on first thin polymer film, wherein first and second thin polymer film mutually directly or the thin polymer film by the 3rd reeve seal indirectly, define the leak free periphery that forms the fully enclosed pouch thus

(c) be in the fully enclosed pouch the periphery at least one frangible, wherein this frangible is divided into the fully enclosed pouch locellus of separation; With

(d) be closed in fluid in the locellus of at least one described separation, wherein the sealing intensity of the leak free periphery of fully enclosed pouch is enough to bear the extruding that hand applies the fluid in the locellus that is closed at least one described separation, and the sealing intensity of wherein said frangible is not enough to bear the extruding of hand to the fluid in the locellus that is closed at least one described separation, thereby after enough hand extruding that continues, the inclusion that described fluid can the locellus that other separate with at least one mixes.

In a plurality of compartment beverage pouch of flexibility of the present invention and flexible a plurality of compartment pouch, leafing under the hand extruding that the flexible thin rete at frangible place is preferably continuing, use for the teenager, this pressure excess that is squeezed in the indoor generation of branch of the separation that comprises liquid beverage is that 0.5psig is to 2.0psig, use for the adult, pressure excess can be up to about 12psig.

Frangible can have about 130 sealing intensities to about 5,000 gram per inchs, but for youth beverage applications, be that sealing intensity restrains between the per inchs until about 2500 at about 400 gram per inchs easily, most preferably be 1,000 to 2,000 gram per inch.Therefore, packing preferably is designed such that when continuing hand and be squeezed in the about 0.5psig of the indoor generation of the branch that comprises liquid beverage or separation of flows to the pressure excess of about 10psig, at some or all apply about 1 on the frangible length, 500 gram per inchs are to about 10, the seal break-off power of 000 gram per inch, and most preferably be designed such that when continuing hand and be squeezed in the about 0.5psig of the indoor generation of the branch that comprises liquid beverage or separation of flows to the pressure excess of about 5psig, at some or all apply the seal break-off power of about 400 gram per inchs and about 6,000 gram per inchs on the frangible length.Yet, for pouch and the beverage application that the adult uses, can consider even higher sealing intensity and seal break-off power, wherein continue hand and induce the pressure rising can reach 12psig or even higher.

According to the present invention, frangible preferably produces by first thin polymer film is heat sealed on second thin polymer film, at least one of wherein said thin polymer film and preferred two inside face comprise (a) and blend (b): (a) the ethylene acid ionomer of 80 to 93 percent by weight, the ethylene acid ionomer derived from ethylene comonomer of at least 50 percent by weight wherein, and wherein Suan degree of neutralization is 5 to 45%, (b) the propylene/alpha-olefins copolymer of 20 to 7 percent by weight, wherein alpha-olefin comonomer accounts for 1 to 12 percent by weight of copolymer.

Selectively, frangible preferably produces by first thin polymer film is heat sealed to second thin polymer film, at least one of wherein said thin polymer film and preferred two inside face are (a) and blend (b) in fragility heat-sealing place: (a) as ethylene methyl acrylate (EMA) copolymer of ethane-acetic acid ethyenyl ester (EVA) copolymer of the sour modification of key component or sour modification and the hexenoic acid ionomer that (b) neutralizes as the part of a small amount of component.

Selectively, frangible preferably produces by first thin polymer film is heat sealed on second thin polymer film, at least one of wherein said thin polymer film and preferred two inside face are (a) and blend (b) in fragility heat-sealing place: (a) as the hexenoic acid ionomer of the part neutralization of key component or ethylene acid copolymer with (b) as the Polybutene-1 homopolymer or the copolymer of component on a small quantity.

Selectively, frangible preferably produces by first thin polymer film is heat sealed on second thin polymer film, at least one of wherein said thin polymer film and preferred two inside face are (a) and blend (b) in fragility heat-sealing place: (a) as the metallocene PE of key component with (b) as polypropylene or the Polybutene-1 homopolymer or the copolymer of component on a small quantity.

Main purpose of the present invention provides flexible a plurality of compartment pouch and relevant drinking container, it can easily use common commercial unit to fill, wherein can easily inner fragile heat-sealing be broken by continuing the hand extruding, it is harmless that but the outer periphery of a plurality of compartment pouch is kept perfectly, and described pouch is sufficiently solid, to bear traditional transportation and customer's processing.

The accompanying drawing summary

Fig. 1 represents the front perspective view of embodiment of locellus, the flat film of two separation of flexible beverage pouch of the present invention.

Fig. 2 represents the left view when Fig. 1 embodiment when line 2-2 watches.

Fig. 3 represents the another kind of uprightly front perspective view of embodiment of the compartment flexible beverage pouch of two separation of the present invention.

Fig. 4 A represents how sequentially to use the transparent view of flexible beverage pouch of the present invention to 4C.

The front plan view of four kinds of geometric configurations of stand-up flexible film beverage pouch of the present invention had wherein deducted annex before Fig. 5 to 8 was illustrated in and fills.

Fig. 5 A is a geometric configuration for corresponding Fig. 5-8 to 8A, under three kinds of different pressure, and the single figure of the computing power (gram/inch) that applies along the inseam of frangible as the function of relative distance.The numerical value that applies peeling force is based on that be applied to fill and the finite element model analysis leak free drinking container, and wherein container stands three kinds of different pressure excesss (1.0,1.5 and 2.0psig) in bigger locellus.

Fig. 9 is illustrated in before the filling, and the front plan view of the particular of stand-up flexible film beverage pouch of the present invention is nominally this pouch is designed to have 2.4 milliliters little locellus and 149 milliliters cumulative volume.

Fig. 9 A is the drink pouches for Fig. 9, and the figure as the computing power (gram/inch) that applies along the frangible inseam of the function of relative distance wherein uses the finite element model analysis under three kinds of different applied pressure increments.

Figure 10 is illustrated in before the filling, and the front plan view of another particular of stand-up flexible film beverage pouch of the present invention is nominally this pouch is designed to have 7.1 milliliters little locellus and 196 milliliters cumulative volume.

Figure 10 A is the drink pouches for Figure 10, and the figure as the computing power (gram/inch) that applies along the frangible inseam of the function of relative distance wherein uses the finite element model analysis under four kinds of different applied pressure increments.

The specific embodiment

At this, though mainly with the preferred form or the embodiment of many compartment beverage pouch of flexibility, describe and for example clear the present invention, but should be appreciated that, basic concepts of the present invention and function are applicable to any fexible film pouch-packaged system usually, wherein fluid (being liquid, gas, paste, gel, slurries or the like) temporarily is enclosed in the locellus of separation, push so that frangible breaks up to flexible pouch being applied hand, thereby the fluid and the inclusion contiguous and locellus that separates that allow to comprise mix.The notion that will be further understood that drink pouches will not only comprise beverage, for example fruit juice, milk, tea or the like, and comprise sour milk and even the more fluid of viscosity, for example custard.Therefore, for pouch and drinking container embodiment, the periphery of selective polymer film or multilayer film, sealing pouch and form the frangible that pouch is divided into the locellus that separates, these notions all belong to aspect of the present invention.

How to use in order to understand the present invention more fully, how the performance of thin polymer film and frangible relates to novel and favourable using method, and what kind of difference the flexible package system that obtains and prior art have, perhaps by explaining better with reference to the accompanying drawings and understanding these.As in Fig. 1 and Fig. 2 illustrated, flexible beverage container of the present invention (indicating by numbering 10 usually), generally include the polymer thin diaphragm 12 and 14 (referring to Fig. 2) of two superpositions, thin polymer film is sealed at periphery or edge 16, thereby form pouch 18, another way be with the film of monolithic (the not show) back of the body fold to from one's body, and along three side seals basically, to form the fully enclosed pouch.In the inside of pouch 18 are frangible 20 (referring to Fig. 1), and it is divided into drinking container 10

locellus

22 and 24 of two separation.Drinking container also is equipped with re-closable fitment 26, and it integrally is sealed in the top of the periphery 16 of pouch 18.

Fig. 3 for example understands the another embodiment of flexible beverage container 10, and it is the form of two compartment stand-up flexible film beverage pouch.Employed corresponding numbering marked when the respective element that constitutes this embodiment was used drinking container in describing Fig. 1 and 2.The difference of the drinking container of this embodiment and front Fig. 1 and 2 is that bottom 28 comprises folding reinforcing plate structure 30, and it makes the drinking container 10 with beverage to stand alone.Such embodiment also comprises more complicated peripheric sealing and/or folding configuration usually, to produce gusset 30 and bottom surface 28.

As sequentially at Fig. 4 A to the 4C illustrated, flexible two compartment beverage container of Fig. 1 illustrated, before the hand extruding, with less separated compartments that beverage in the big locellus separates in comprise second kind of beverage, seasoning enrichedmaterial, other composition, for example aerating agent and/or colorant or the like.When hand extruding flexible beverage pouch, will be above making two frangibles between the locellus needed power of breaking.Therefore, frangible is opened, the fexible film delamination layer of heat-sealing, and the inclusion of two locellus that separated in the past mixes.Simultaneously, the outside seal periphery of drinking container remains intact harmless under this hand squeese pressure.Therefore, after extruding, from drinking container, drink, and compare in that frangible is taken from described container before breaking by the annex of Reclosable, will different local flavor or the effects of generation.

For further casehistory is designing and constructing employed principle in a plurality of compartment pouch of flexibility of the present invention and the beverage corresponding container with understanding, Fig. 5 to 8 has shown four kinds of typical configurations of frangible in two compartment flexible beverage pouch of standing.As illustrational, Fig. 5 to 8 shown before fill fluid or the beverage and after omitting annex or other obturators, folding and the geometric configuration plane polymeric film pouch.Use these configurations, wherein lines show the folding line in permanent sealing or the sheet, have carried out the finite element model analysis when filling with incompressible liquid on corresponding pouch configurations.Carry out under three kinds of different pressures increments of finite element model analysis in closed pouch; Be 1.0psig, 1.5psig and 2.0psig.Calculated the power on the per unit length seam that applies along frangible that is caused.Fig. 5 A has shown the figure of the power (gram/inch) of these calculating that apply along frangible seam (promptly based on the relative resolution factor of finite element analysis or the arbitrary linear unit of grid) as the function of relative distance to 8A, as in corresponding figure illustrated, be subjected to the influence of the geometric configuration (curvature) of frangible significantly along the power of frangible, and the function of the size of this power pressure of still inducing by the extruding pouch.Fig. 6 A and 7A are equivalent to exist sharp point or summit in frangible seal design, when comparing with the frangible of the straight line basically of Fig. 5 A, show significantly, exist much higher power to concentrate at the place, summit of described point, promptly are enough to produce seal break-off power.This can be used to control the position of breaking and allow to use more crash-resistant frangible (being higher sealing intensity).Similarly, the smooth curve frangible seal configuration of Fig. 8 and 8A under given pressure excess, with respect to the straight configuration of frangible, shows higher peeling force, and shows the localization of the power of this raising, but does not reach the degree of V-arrangement summit configuration.Given this, should be appreciated that the physical curvature of frangible and shape become to exert all one's strength concentrates means with the sealing intensity that surpasses frangible.Therefore, according to the present invention, the power centralized approach that is used for selectively surpassing sealing intensity has equivalent widely, consists essentially of departing from of any that have a mind to and straight line frangible.Therefore be also to be understood that Fig. 5 A has proposed to utilize the power centralized approach to use the possibility of higher frangible intensity to 8A, even guaranteed breaking of the most crash-resistant frangible.On the other hand, lower power intensity with on relative long distance, break, can guarantee the mixing preferably, easier and/or faster of inclusion of separated compartments.

Fig. 9 and 10 for example understands the another kind of geometric configuration that is used at the specific preferred embodiment in children's fruit juice-flavor beverage market.Fig. 5 to 8 is similar to fwd, demonstration be the profile folding and plane of polymeric film pouch before the filling liquid beverage.Equally, two compartment flexible beverage pouch are predetermined to be stand-type, has folding reinforcing plate structure, and its generation is used for the bottom surface of supports upright pouch.In addition, the outer periphery of bevelled a little of the upper right quarter of bigger chamber part is in order to installation accessories or the like (not shown).The purpose of these two kinds of other embodiments is explanations, and single part of teenager measures beverage and can be packaged in a plurality of compartment beverage pouch of the present invention.Therefore, nominally two compartment pouch of Fig. 9 are 5.76 inches long (perhaps high) and 4.25 inches wide (in the bottom), nominally the volume of little locellus is 2.4 milliliters.With the volume of big locellus be 146 milliliters.Nominally two compartment pouch of Figure 10 are 6.77 inches high and 4.39 inches wide, be 189mL nominally the volume of little locellus is the volume of 7.1 milliliters and big locellus.In principle, the less locellus of Fig. 9 is used for seasoning enrichedmaterial, powder, solid or the like, and the locellus of corresponding Figure 10 is more suitable in second kind of liquid seasoning dilution with bigger a little relative volume.Use in order to make this class formation be suitable for the teenager, think that frangible must be easily induce under the pressure excess break (promptly preferably arriving in the lasting pressure rise range of about 2.0psig about 0.5) at the about hand of 1.0psig, this knowledge with common known and disclosed strength about children's hand is consistent: reference example is as " 3.5 to 15 years old normal child etc. specific muscle strength and anthropometric value ", Backman etc., Scand J Rehab Med21:105-114,1989 and " the elderly ", Imrhan etc., human factor, 31 (6), 689-701,1989.Yet in pouch applications and adult's beverage application, acceptable hand-held continuous pressure rise range is near 10 to 12psig.

Fig. 9 A and 10A represent equally when using liquid filling, the result of the finite element analysis of carrying out on corresponding pouch configurations.As in front explanation with the situation in calculating, for Fig. 9 and 10 both, the finite element model analytical model is analyzed under three kinds of different pressure excesss (promptly 1.0,1.5 and 2.0psig) and is carried out, and for Figure 10, also carries out under the pressure excess of 0.5psig.Equally, the figure of these data (Fig. 9 A and 10A) illustrates that by the extruding pouch, children can apply the seal break-off power that surpasses about 1,500 gram/inch along the specific part of frangible.

In view of foregoing description, single teenager of the present invention measures drinking container and uses frangible to constitute and make, and this frangible has usually and is lower than a sealing intensity that dwindles the peeling force peak value that bag obtains by hand.In other words, frangible is configured to bear the power that stands inherently at transportation, processing and lay up period, but can not bear the power that applies by the hand extruding that pouch is continued.Must be able to bear the situation that hand pushes even of course it is to be understood that the thin polymer film of pouch wall or the intensity of sheet material.And peripheric sealing most preferably is locking (lock-up) heat-sealing or the like; Promptly be equivalent to peel away outer periphery sealing and/or make the outer periphery sealing break in film or sheet material elongation or tear needed intensity.Yet though should be appreciated that the locking sealing is preferred for periphery, within the scope of the invention, peripheric sealing need have high sealing intensity, but must not be locking, as long as frangible is weaker than peripheric sealing.Therefore, according to the present invention, as long as frangible, can obtain peeling off of needed frangible than peripheric sealing weakness or break; The mechanism of this and seal break-off (for example delamination, break, difference (differential) is peeled off, interface peel or the like) irrelevant.

For purpose of the present invention, the thin polymer film that is used to make the sidewall of flexible a plurality of compartment pouch or drinking container can be single layer or multilayered polymer film in principle.These films that comprise in the side wall construction must not have identical structure (for example, a layer can be transparent, and another can be opaque).In addition, can use common this known class film grade polymeric resin or material in any packaging field in principle.The preferred multilayer polymer film structure of using.Usually, multilayer polymer sheets will comprise at least three clear and definite layers, including, but not limited to, outmost structure or mechanical damage layer, internal barriers add innermost layer, and optional one or more adhesive phases or the binding layer between them, in addition, contact and compatible innermost layer with the pouch inclusion of being scheduled to, preferably can form locking peripheric sealing (being that sealing intensity is usually greater than 1,500 gram/inch) and internal frangible seal.Most preferably innermost layer still is heat sealable.

The polyester that outmost structure or mechanical damage layer normally are orientated or the polypropylene of orientation, but also can comprise oriented nylon or paper.But this layer be reverse printed preferably, and advantageously is not used to make the influence of the seal temperature of pouch and locellus, because pouch is sealed by the general thickness of multiple-structure.The thickness of this layer is selected usually, with the stiffness of control pouch, and can be for about 10 to about 60 μ m, 50 μ m preferably approximately.

Internal layer can comprise one or more barrier layeres, depends on the atmospheric conditions (oxygen, humidity, light or the like) that can influence pouch in-to-in product potentially.Barrier layere can be the polypropylene (PP) of metalized oriented or orientation polyethylene terephthalate (PET), ethylene-vinyl alcohol copolymer (EVOH), aluminium foil, nylon or biaxial oriented nylon, their blend or composite material, with and relevant copolymer.Barrier layer thickness will depend on the shelf life of sensivity He the needs of product.

The innermost layer of packing is an aquaseal.Aquaseal is selected to has minimum influence to the taste of inclusion or color, not influenced by product, and bears air-proof condition (for example drop, grease, dust or the like).Aquaseal is resin normally, and it can substantially be lower than and is incorporated into self (sealing) under the outermost melt temperature, and therefore outermost outward appearance will can not be subjected to the influence of seal process, and will can not adhere on the narrow orifice of seal bar.The representative type aquaseal that is used for the multilayer pouch comprises ethylene copolymer, the copolymer of low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE), metallocene PE (mPE) or ethene and vinyl acetate or methyl acrylate for example, the perhaps copolymer (EMAA) of ethene and acrylic acid copolymer (EAA) or ethene and methyl acrylic acid, they are randomly (promptly partly with for example Na, Zn, Mg or Li neutralizations of metallic ion) of ionomerization.The representative type aquaseal also can comprise polypropylene copolymer.Sealant layer is 25 to 100 micron thickness normally.For the present invention, aquaseal must can form the side locellus, and this side locellus can break and destroy by extruding, i.e. frangible.

Preferably, frangible is that the multi-layer sheet heat-sealing by the thin polymer film that two are repeatedly put forms, each sheet material has the most inboard sealant layer by resin manufacture, and when heat-sealing formed under different temperatures, described sealant layer formed the interface peel sealing with different sealing intensities.This resinoid comprises one or more polyolefinic blends, for example: polyethylene (comprising metallocene PE) and polybutene or polypropylene (comprising its homopolymer or copolymer) (general name: PE/PB blend; The PE/PP blend); Polypropylene and polybutene (PP/PB blend); Polypropylene and ethylene methacrylic acid copolymer (PP/EMAA blend); Perhaps polypropylene and styrene-ethylene/butylene-styrene block terpolymer (PP/SEBS blend

Selectively, frangible can be by producing with aquaseal topical application innermost layer in the leak free zone, and selectively, frangible can form by sealing two kinds of different sealing surfaces, for example ionomer and ethylene copolymer.Particularly preferably being will be based on ethylene acrylic acid co polymer or the ionomer of ethylene methacrylic acid copolymer and the most inboard sealant layer of blend (EAA or the EMAA ionomer copolymer blended with PP/PB) conduct of polypropylene alpha olefin copolymer of part neutralization, because other blends are more insecure, and topical application is more expensive.In the heat-sealing temperature scope of broad, have this class ionomer of predictable peel strength and the blend of polypropylene copolymer, be disclosed in US Patent 4,550,141 and 4,539,265.These particularly preferred blend polymers, when being used for flexible a plurality of compartment beverage pouch, making each inside face of thin polymer film is following blend: (a) the ethylene acid ionomer of 80 to 93 percent by weight, wherein this ionomer can be Bipolymer or terpolymer, and the described ethylene acid ionomer derived from ethylene comonomer of at least 50 percent by weight, and usually more than 8 percent by weight derived from sour comonomer, and wherein Suan degree of neutralization is 5 to 45%, (b) the propylene/alpha-olefins copolymer of 20 to 7 percent by weight, wherein alpha-olefin comonomer accounts for 1 to 12 percent by weight of described copolymer.

As the U.S. 4,550, instruction and giving an example in 141 patents, select ethylene/methacrylic acid (EMAA) ionomer and the propylene/ethylene copolymer of this amount, as the blend that constitutes inner seal agent layer, partly determined peel strength as the frangible of the function of employed interface " heat-sealing " temperature in making frangible.More specifically, the embodiment of this patent discloses and has used and EMAA ionomer (15%MAA; With among the Zn and 22%) about 5 percent by weight of blend are until the PP/E of about 20 percent by weight (3%E) copolymer.As further illustrational, under lower PP/E copolymer addition (for example 8%), the heat-sealing flat-bed of about 800 to 1070g/in sealing intensities begins in about 90 to 120 ℃ of range of temperaturess, function as the addition of the raising of PP/E copolymer (for example 20%) is changed to the about 130 heat-sealing platforms to the 400g/in sealing intensity in about 80 to 140 ℃ range of temperatures; Reference example 1 and 6-9, the class likelihood data that uses this information or those skilled in the art to measure at other sealant blends, the composition of inner seal agent layer can be easily selected, and be easy to select to be used to make the heat-sealing temperature of frangible, thereby can produce the frangible of the peeling force of breaking with predictable and needed scope.

To comprise the frangible that at least one power is concentrated setting in order making,, to have considered various selectable methods so that surpass the sealing intensity of frangible selectively.Preferably utilize the shape and/or the curvature of frangible that the power that is produced when pouch is contracted by hand or pushes is concentrated.Yet, when having used the local coating of heat sealing resin, along the local coating width of frangible have a mind to reduce or the like also to be advantageously used for the concentrated means of exerting all one's strength (having or not having under the situation of curvature) surpass the purpose of sealing intensity so that reach selectively.In addition, be used to seal the geometric configuration of (heating) heat seal bars of frangible and/or variable width, can be used for producing and can be used for power of the present invention and concentrate and be provided with.In principle and in fact, time-the temperature encapsulating method also can be used, and makes to comprise power and concentrate the frangible that is provided with, and this power is concentrated the sealing intensity that is provided for surpassing selectively frangible.For example, but be not by way of limitation, the repetition of different heat seal bars and/or repeatedly punching out (sitikes) can produce frangible with variable sealing intensity, so it can serve as the desired power that is used for selectively surpassing the sealing intensity of described frangible and concentrates the equivalent structure that is provided with.

In order to measure above-mentioned sealing intensity, cut 4 inches polymer thin membrane samples of taking advantage of 6 inches, the length direction of sample film vertically on.Cut enough film samples, so that a cover sample of three samples is provided for each heat seal condition.Then that film is folding, make the sealant layer of every side contact another.Then, under suitable temperature, time and pressure, between the narrow orifice of heat sealing machine, film is sealed.Then before test, with the adjusting at least 24 hours under 73 and 50% relative humidity of the sample of heat-sealing.The folded portions of sealing film is cut in half, form the sheet of the anchor clamps be fit to put into the Instron fixing device.Then film vertically on one inch sample of cutting so that at least three 1 inch wide samples are provided under every cover air-proof condition.

By using Instron, under 5 inch per minute clock fixing device speed, film vertically in, sealing is drawn back, measure sealing intensity.In other cases, can also on Instron, use the pulling speed of 12 inch per minute clocks.Record causes the needed maximum, force of seal break-off then, and to restrain the aviation value of at least three samples of/25.4 millimeters (i.e. gram/inch) report.

Other particularly preferred blend polymers as the innermost layer that forms frangible comprise: as the compound of the EMA of the EVA copolymer of ethane-acetic acid ethyenyl ester (EVA) copolymer of key component or sour modification and ethylene methyl acrylate (EMA) copolymer or sour modification with as polypropylene homopolymer or copolymer, polybutene homopolymer or copolymer, the hexenoic acid ionomer of part neutralization or the compound of this ionomer and metallocene PE of a small amount of component.This base polymer system and blend can be used as aquaseal from E.

Nemours

Company buys, and commodity are by name

With

Equally, usually use various additives, comprise, but do not limit

As slip agent, antiblocking agent and/or chilling roller slippage agent or the like.Use the BVA of these sour modifications and EMA base blend, combine with various other polymer film layers, heat-seal strength can be selectively 300g/in until 3,000g/in, the locking heat-seal strength is above 3,000g/in.

During manufacturing was used to make the polymeric film sheet of pouch, co-extruding adhesive randomly was used between the functional layer, so that described layer is bonding mutually, and provided structure integrity.These include but are not limited to, and with ethene or the acrylic polymers and the copolymer of the group modified or grafting of unsaturated carboxylic acid, described unsaturated carboxylic acid group for example is maleic anhydride or maleic acid or the like.In addition, for additional thickness (if the customer is needed in the specific application) is provided, the resistates of the chopping of polyolefinic body layer or the multilayer film pruned during the pouch manufacturing be introduced in the multiple-structure, considered that polymeric film sheet (promptly so-called " net material (web stock) ") can use any combination of usually known method in the art to produce, for example individual layer or multilayer curtain coating, blown film, extrude lamination and adhesive lamination with and combination.Processing aids as generally known in the art, for example comprise, but be not limited to slip agent (for example amide waxe), anti blocking agent (for example silicon dioxide) and antioxidant (for example hindered phenol) and can introduce the net material, promote the words of thin film fabrication or little bag forming if desired.By cutting and sealing the net material sheet that separates, perhaps combine by folding and seal with cutting, form pouch by the net material.The pouch manufacturing equipment is for example by Totani company

Japan, perhaps Klockner Barlelt company, Gordonsville, VA, the pouch manufacturing equipment of manufacturing can be advantageously used in enforcement the present invention.Fragile locellus can be provided with between the pouch shaping period or afterwards.Will be further understood that, the periphery of the heat-sealing of pouch of the present invention can be by following acquisition: first and second thin polymer films are overlapped, directly be heat sealed to each on another then, perhaps their are sealed indirectly by the 3rd thin polymer film that use to inject, this be equally generally known in the art with implement.

The drink pouches embodiment must provide the mechanism that allows the customer to obtain inclusion easily.This can or preferably use annex or export and realize by the insertion suction pipe, for example by Menshen Packaging USA, and Waldwick, NJ or Portola Packaging, San Jose, those that CA sells.Annex or the outlet by preferably sealed in the top or side of pouch.Annex or outlet are from being sealed to material molding on the pouch by means of induction, heat or laser energy.The equipment that depends on use, sealing can be carried out before or after filling pouch.Preferably; when annex was used for the youth beverage pouch applications, it was the protection child safety that annex should be designed to, for example in US Patent 6; 138,849 and the patent application number AD7005US NA of the common undetermined and common transfer meanwhile submitted in discussed.

Similarly, a plurality of compartment pouch embodiments of flexibility of the present invention can provide the mechanism that allows the customer to obtain the inclusion of pouch easily, so this pouch embodiment can be served as drink pouches.Especially, but be not by way of limitation, this pouch embodiment can provide the system of opening, and it can puncture (be so-called sipper pore or pierce through opening) with suction pipe, as generally known in the art: for example with reference to US Patent 5,425,583; 5,823,656 and 6,116,782.

Embodiment 1-18

In following examples, on five layers of blown film manufacturing line, produced five-layer co-squeezing and gone out blown film, skin is the LDPE of fusion index 0.3 and density 0.918g/cc, and the bonding coat of adjacency be anhydride modified polyethylene (

4104), the barrier layere of ethylene-vinyl alcohol copolymer (EvalF101A), anhydride modified lldpe (

Second bonding coat 41E687), with the internal sealant layer, it comprises the melt blended material of 10 percent by weight atactic polypropylene copolymers (135 ℃ of melt flow rate 7 and fusing points) and 90 percent by weight ethene ionomer terpolymers, described terpolymer comprises 10 percent by weight methyl acrylic acids and 10 percent by weight isobutyl acrylates, and 15% acidic group is neutralized by zinc.Be 62rpm down in 63.5 millimeters single screw extrusion machines of operation under 219 ℃ with the LDPE fusion.Be 27rpm down in 50.8 millimeters single screw extrusion machines of operation, with EVOH 211 ℃ of following fusions.Down will at 215 ℃ in 50.8 millimeters single screw extrusion machines that are to operate under the 34rpm 4104 fusions.Be down will at 196 ℃ in 50.8 millimeters single screw extrusion machines of operation under the 12rpm The 41E687 fusion.Be 13rpm down in 63.5 millimeters single screw extrusion machines of operation under 223 ℃ with the ionomer blend fusion.Blown film is carried out Corona discharge Treatment on the PE layer, and be laminated to 48 specifications oriented polyester (

LBT) on.The PE layer is 71 microns, and each bonding coat is 8 microns, and barrier layere is 13 microns, and the internal sealant layer is 28 microns.With 3 mm wide heat seal bars film is heat sealed on the itself then, two heat seal bars are heating under 275 kPas the pressure and under temperature of describing in as embodiment and the length of the halt.On Instron film is tested then, as previously described, wherein Instron draws with 12 inch per minute clocks.As what can see from these embodiment, the heat-seal strength level can be easily made sealing and is controlled by using suitable temperature and time, therefore obtain desired seal intensity, so that about 5000 gram/inches or following fragility to be provided, perhaps provide 8000 gram/inches or bigger locking sealing.The data that obtain are shown in the following table 1.

Table 1

Embodiment	Length of the halt second	Rod temperature	Heat-seal strength gram/inch
Embodiment	Length of the halt second	Rod temperature	Heat-seal strength gram/inch	1	0.5	200	340
2	0.75	200	497	1	0.5	200	340
2	0.75	200	497	3	0.75	240	6325
4	0.5	200	229	3	0.75	240	6325
4	0.5	200	229	5	0.75	200	531
6	1	200	1042	5	0.75	200	531
6	1	200	1042	7	1	240	9975
8	0.75	240	9932	7	1	240	9975
8	0.75	240	9932	9	0.5	240	1467
10	1	220	3285	9	0.5	240	1467
10	1	220	3285	11	0.75	220	1770
12	0.5	240	1697	11	0.75	220	1770
12	0.5	240	1697	13	1	200	1306
14	1	240	9617	13	1	200	1306
14	1	240	9617	15	0.5	220	1078

16	1	220	3306
16	1	220	3306	17	0.75	220	1694
18	0.5	220	942	17	0.75	220	1694

Embodiment 19-26

In following examples, on industrial blown film manufacturing line, produced similar five-layer co-squeezing and gone out blown film, with the similar structure described in manufacturing and the embodiment 1-18.For these embodiment, described film has the skin of LLDPE, anhydride modified lldpe (

The bonding coat of adjacency 41E687), the barrier layere of ethylene-vinyl alcohol copolymer (Eval F101A), anhydride modified lldpe ( Second bonding coat 41E687), with the internal sealant layer, sealing agent layer comprises the melt blended material of 10 percent by weight atactic polypropylene copolymers (135 ℃ of melt flow rate 7 and fusing points) and 90 percent by weight ethene ionomer terpolymers, described terpolymer comprises 10 percent by weight methyl acrylic acids and 10 percent by weight isobutyl acrylates, and 15% acidic group is neutralized by zinc.Blown film is 100 microns or 125 micron thickness, and the film of 100 micron thickness is made up of 53 microns LLDPE layer, 5 and 7 microns binding layer, 10 microns evoh layer and 25 microns ionomer layer.The film of 125 micron thickness is made up of 65 microns LLDPE layer, 5 and 7 microns binding layer, 15 microns evoh layer and 33 microns ionomer layer.Two films are carried out Corona discharge Treatment on the PE layer, and be laminated to 48 specifications oriented polyester ( LBT) on.On industrial Totani pouch machine, film made then to Fig. 9 in the similar pouch described.The various conditions of making frangible chamber are described in the following table 2, and one inch wide strip that will comprise frangible cuts perpendicular to vertical frangible seal compartment.Ten such test pieces to taking off from five pouches of each embodiment are subsequently being tested under 12 inch per minute clocks on the Instron, in aviation value the has been reported in mark row of heat-seal strength.Make the needed internal pressure test of breaking of the frangible chamber of these pouches as follows.The bulkhead device that will have 0.25 inch convex gas thread of 1/8 beautiful cun compression is fixed to the main chamber of pouch, and cuts Sensotech#7/1786-08 type pressure sensor by 1/8 inch pipe connection.At duration of test, the output of sensor is input to Sensotech#2310 type signal amplifier, and uses suitable computer software to draw.Water is filled by the main chamber of pouch, and any leakage so that do not taking place in sealing fully then near the valve or in peripheric sealing.Pouch is placed on the circle 5 and 7/8 inch pressing plate lower fixture of Instron, makes top double-type fixing device on pouch, apply power then, break up to the frangible between two chambers with the speed of 2 inch per minute clocks.Record makes the frangible needed maximum internal pressure of breaking.Row in the following table have reflected the aviation value for three such readings of each embodiment.

As can seeing from these embodiment 18 to 26, the heat-seal strength level can be easily produces described sealing and controls by using suitable temperature and time.Frangible is broken, and the internal pressure that the outmost peripheric sealing of pouch is broken change between the 8.3psig at 0.6psig.

Table 2

Benefit of the present invention and advantage are a lot of and significant. At first the invention provides that be easy to fill, crackly, but firm a plurality of compartment pouch, it can use usually known industrial equipment to make economically. Pouch of the present invention and/or individual container for drink provide various inclusions and component have been retained in the interior method of packing, and these inclusions and component temporarily are separated from each other, and determine whether mix by the user subsequently. And then when using this packaging system, provide to produce various novelties and possibility exhilarating aesthetic effect and benefit. In fact, the arbitrarily quantity that is provided for the user by the present invention, size, shape and breaking of controlled frangible have in turn represented the scope of in fact unrestricted novel package possibility and Aesthetic Function effect.

Claims

1. a plurality of compartment beverage pouch of a flexibility, it comprises:

(a) first thin polymer film;

(b) second thin polymer film, it is placed on described first thin polymer film, wherein said first and second thin polymer film mutually directly or the thin polymer film by the 3rd reeve seal indirectly, define the leak free periphery of general rectangle thus, form the fully enclosed pouch with first end and second end and two opposite sides;

(c) be at least one smooth curve frangible in the described leak free periphery, and described at least one smooth curve frangible is divided into the locellus of separation with described fully enclosed pouch, comprises first locellus and second locellus;

(d) described first locellus comprises or the confined liquid beverage;

(e) described second locellus comprises or limits another kind of composition; With

(f) at the annex of described first end;

Wherein, described second end is the end relative with described annex, and described at least one smooth curve frangible is extended to one of described opposite side by described first end.

2. a plurality of compartment beverage pouch of flexibility according to claim 1, wherein said another kind of composition is a liquid seasoning enrichedmaterial.

3. a plurality of compartment beverage pouch of flexibility according to claim 1, wherein when the hand that continues when being pressed in the pressure excess of described first minute maximum 12 pounds/sq in of indoor generation, described at least one smooth curve frangible delamination.

4. a plurality of compartment beverage pouch of flexibility according to claim 1, wherein when the hand that continues when being pressed in indoor generation in described first minute from the pressure excess of 0.5 pound/sq in to 2.0 pound/sq in, described at least one smooth curve frangible delamination.

5. a plurality of compartment beverage pouch of flexibility according to claim 1, wherein said at least one smooth curve frangible has the sealing intensity of 130 gram/inches to 5,000 gram/inches.

6. a plurality of compartment beverage pouch of flexibility according to claim 1, wherein at the hand that continues when being pressed in the pressure excess of 0.5 pound of indoor generation in described first minute/sq in to 5.0 pound/sq in, described at least one smooth curve frangible stands the seal break-off power of 400 gram/inches to 6,000 gram/inches.

7. a plurality of compartment beverage pouch of flexibility according to claim 1, wherein said at least one smooth curve frangible comprises at least one power and concentrates setting, so that in described first locellus under the pressure excess of 0.5 pound/sq in to 10 pound/sq in, by standing 1,500 gram/inches are until 10, the seal break-off power of 000 gram/inch surpasses the sealing intensity of described at least one smooth curve frangible selectively.

8. a plurality of compartment beverage pouch that relate to any one described flexibility of claim 1-7, wherein said at least one smooth curve frangible produces by described first thin polymer film is heat sealed on described second thin polymer film, and the inside face of at least one of wherein said thin polymer film comprises the blend of following material: (a) the ethylene acid ionomer of 80 to 93 percent by weight, the described ethylene acid ionomer derived from ethylene comonomer of at least 50 percent by weight wherein, wherein Suan degree of neutralization is 5 to 45%, (b) the propylene/alpha-olefins copolymer of 20 to 7 percent by weight, wherein alpha-olefin comonomer accounts for 1 to 12 percent by weight of described copolymer.

9. according to a plurality of compartment beverage pouch of any one described flexibility of claim 1-7, wherein said at least one smooth curve frangible produces by described first thin polymer film is heat sealed on described second thin polymer film, and the inside face of at least one of wherein said thin polymer film is the blend that comprises following material at the frangible place: (a) as the ethylene methyl acrylate copolymer of the vinyl-vinyl acetate copolymer of the sour modification of key component or sour modification with (b) as the hexenoic acid ionomer of the part neutralization of a small amount of component.

10. according to a plurality of compartment beverage pouch of any one described flexibility of claim 1-7, wherein said at least one smooth curve frangible produces by described first thin polymer film is heat sealed on described second thin polymer film, and at least one inside face of wherein said thin polymer film comprises the blend of following material: (a) as the hexenoic acid ionomer of the part neutralization of key component with (b) as the Polybutene-1 homopolymer or the copolymer of a small amount of component.

11. a plurality of compartment beverage pouch according to any one described flexibility of claim 1-7, wherein said at least one smooth curve frangible produces by described first thin polymer film is heat sealed on described second thin polymer film, and at least one inside face of wherein said thin polymer film comprises the blend of following material: (a) as the metallocene PE of key component with (b) as polypropylene or the Polybutene-1 homopolymer or the copolymer of a small amount of component.

12. according to a plurality of compartment beverage pouch of any one described flexibility of claim 1-7, wherein said periphery forms the fully enclosed pouch, and described pouch is upright pouch.

13. a plurality of compartment pouch of a flexibility, it comprises:

(a) first thin polymer film;

(b) second thin polymer film, it is placed on described first thin polymer film, wherein said first and second thin polymer film mutually directly or the thin polymer film by the 3rd reeve seal indirectly, define thus and have bottom and the end relative and the periphery of two opposite sides, formation fully enclosed stand-up pouch the end of with;

(c) be at least one smooth curve frangible in the described fully enclosed periphery, wherein said at least one smooth curve frangible is divided into the locellus of separation with described fully enclosed pouch, comprises first locellus and second locellus; With

(d) be closed in fluid in described first locellus, the sealing intensity of wherein said leak free periphery is enough to bear hand to pushing that described fluid applies, and the sealing intensity of described at least one smooth curve frangible is not enough to bear hand to the pushing of described fluid, thereby described fluid can mix with the inclusion of described second locellus;

Wherein said at least one smooth curve frangible is extended to one of described opposite side by the described the end relative end of with.

14. a plurality of compartment pouch of flexibility according to claim 13, wherein at the hand that continues when being pressed in the pressure excess of described first minute maximum 10 pounds/sq in of indoor generation, described at least one smooth curve frangible delamination.

15. a plurality of compartment pouch of flexibility according to claim 13, wherein said at least one smooth curve frangible has the sealing intensity of 130 gram/inches to 5,000 gram/inches.

16. a plurality of compartment pouch of flexibility according to claim 13, wherein at the hand that continues when being pressed in the pressure excess of 0.5 pound of indoor generation in described first minute/sq in to 5 pound/sq in, described at least one smooth curve frangible stands the seal break-off power of 400 gram/inches to 6,000 gram/inches.

17. a plurality of compartment pouch according to any one described flexibility of claim 13-16, wherein said at least one smooth curve frangible is sealed to described first thin polymer film on described second thin polymer film and by heat-sealing or zone-coating and produces, and the inside face of at least one of wherein said thin polymer film comprises the blend of following material: (a) the ethylene acid ionomer of 80 to 93 percent by weight, the described ethylene acid ionomer derived from ethylene comonomer of at least 50 percent by weight wherein, wherein Suan degree of neutralization is 5 to 45%, (b) the propylene/alpha-olefins copolymer of 20 to 7 percent by weight, wherein alpha-olefin comonomer accounts for 1 to 12 percent by weight of described copolymer.

18. a plurality of compartment pouch according to any one described flexibility of claim 13-16, wherein said at least one smooth curve frangible is sealed to described first thin polymer film on described second thin polymer film and by heat-sealing or zone-coating and produces, and the inside face of at least one of wherein said thin polymer film is the blend that comprises following material in fragility heat-sealing place: (a) as the ethylene methyl acrylate copolymer of the vinyl-vinyl acetate copolymer of the sour modification of key component or sour modification with (b) as the hexenoic acid ionomer of the part neutralization of a small amount of component.

19. flexible a plurality of compartment pouch, described pouch comprises first thin polymer film that is sealed on second thin polymer film, has at least one smooth curve frangible by the inside at described pouch periphery seals or zone-coating prepares, wherein said pouch is a stand-up pouch, wherein said at least one smooth curve frangible is divided into described pouch the locellus of separation, comprise first locellus and second locellus, and under the pressure excess of in described first locellus or second locellus 0.5 pound/sq in to 5 pound/sq in, described at least one smooth curve frangible stands the seal break-off power of 400 gram/inches until 6,000 gram/inches; Described stand-up pouch is general rectangle, have the end, end and the opposite side relative end of with, and described at least one smooth curve frangible is extended to one of described opposite side by described opposite end.

20. flexible a plurality of compartment pouch, described pouch comprises first thin polymer film that is sealed on second thin polymer film, has at least one smooth curve frangible by the inside at described pouch periphery seals or zone-coating prepares, wherein said pouch is a stand-up pouch, wherein said at least one smooth curve frangible is divided into described pouch the locellus of separation, comprise first locellus and second locellus, and described at least one smooth curve frangible comprises at least one power and concentrates setting, so that under the pressure excess of in described first or second locellus 0.5 pound/sq in to 10 pound/sq in, by standing 1,500 gram/inches are until 10, the seal break-off power of 000 gram/inch, and surpass the sealing intensity of described at least one smooth curve frangible selectively; Described stand-up pouch is general rectangle, have the end, end and the opposite side relative end of with, and described at least one smooth curve frangible is extended to one of described opposite side by described opposite end.

21. a plurality of compartment pouch according to claim 19 or 20 described flexibilities, the inside face of at least one of wherein said thin polymer film comprises the blend of following material: (a) the ethylene acid ionomer of 80 to 93 percent by weight, the described ethylene acid ionomer derived from ethylene comonomer of at least 50 percent by weight wherein, wherein Suan degree of neutralization is 5 to 45%, (b) the propylene/alpha-olefins copolymer of 20 to 7 percent by weight, wherein alpha-olefin comonomer accounts for 1 to 12 percent by weight of described copolymer.

22. a plurality of compartment pouch according to claim 19 or 20 described flexibilities, the inside face of at least one of wherein said thin polymer film is the blend that comprises following material in fragile heat-sealing place of described at least one smooth curve: (a) as the ethylene methyl acrylate copolymer of the vinyl-vinyl acetate copolymer of the sour modification of key component or sour modification with (b) as the hexenoic acid ionomer of the part neutralization of a small amount of component.

23. a plurality of compartment pouch according to claim 19 or 20 described flexibilities, the inside face of at least one of wherein said thin polymer film is the blend that comprises following material in fragile heat-sealing place of described at least one smooth curve: (a) as the hexenoic acid ionomer of the part neutralization of key component with (b) as the Polybutene-1 homopolymer or the copolymer of a small amount of component.

24. a plurality of compartment pouch according to claim 19 or 20 described flexibilities, the inside face of at least one of wherein said thin polymer film is the blend that comprises following material in fragile heat-sealing place of described at least one smooth curve: (a) as the metallocene PE of key component with (b) as polypropylene or the Polybutene-1 homopolymer or the copolymer of a small amount of component.