CN101889924A

CN101889924A - Novel paper diaper

Info

Publication number: CN101889924A
Application number: CN 201010225625
Authority: CN
Inventors: 杨增扬; 郑佳明; 陈建义
Original assignee: CHIAUS (FUJIAN) INDUSTRIAL DEVELOPMENT Co Ltd
Current assignee: CHIAUS (FUJIAN) INDUSTRIAL DEVELOPMENT Co Ltd
Priority date: 2010-07-10
Filing date: 2010-07-10
Publication date: 2010-11-24
Anticipated expiration: 2030-07-10
Also published as: CN101889924B

Abstract

The invention provides a paper diaper with the advantages of difficult reverse osmosis, faster absorption and better effect. The paper diaper comprises a liquid permeable surface layer, an absorber, a liquid impermeable bottom layer, left and right waist tapes and a front waist tape. The paper diaper is provided with a traverse direction which extends along the waist direction and a longitudinal direction which extends from a front waist region to a rear waist region. The absorber is arranged between the liquid permeable surface layer and the liquid impermeable bottom layer; the left and right waist tapes are adhered to two transverse sides of the liquid impermeable bottom layer in the rear waist region; and the front waist tape is arranged outside the liquid impermeable bottom layer in the front waist region. The absorber is overlapped by an upper dumb-bell shaped absorbing core and a lower dumb-bell shaped absorbing core. The upper dumb-bell shaped absorbing core contains 10 to 20 weight percent of super absorbent resin; the lower dumb-bell shaped absorption core contains 20 to 35 weight percent of super absorbent resin; and the projected area of the lower absorbing core in the vertical direction does not exceed 1/3 of that of the upper dumb-bell shaped absorbing core.

Description

A kind of novel diaper

Technical field

The present invention relates to hygiene article sector, especially relate to a kind of diaper.

Background technology

It comprises the liquid permeability surface layer known diaper, absorber, the opaque liquid bottom, left and right sides waist pastes and frontal waist plaster, described diaper have along the waistline direction extend laterally and by front waist region to the back waist region direction extend vertically, described absorber is located between liquid permeability surface layer and the opaque liquid bottom, and described left and right sides waist is attached at the described opaque liquid bottom of back waist region both lateral sides, and described frontal waist plaster is located at the described opaque liquid bottom of the front waist region outside.This part-structure is on 03 03rd, 2010 in the day for announcing, the patent No. be obtain on 200920153861.8 the Chinese patent fully open.

Chinese patent ZL94109165.1 discloses a kind of " absorbing articles ", anter and the rear panel of liquid impermeable and the absorbent article that places the absorber between two to constitute by permeation liquid, described absorber is made of two-layer at least, the ground floor that is disposed adjacent anter is made of hydrophilic fibers and hot-melt adhesive fiber, is placed on the second layer that approaches rear panel and is made of super absorbent polymer and hot-melt adhesive fiber.

Chinese patent ZL 00238815.4 discloses a kind of " protecting wing type dual-cotton core sanitary towel ", comprise and have both wings and rectangular body perforating film layer or nonwoven layer and the salivation film identical with it, and perforating film layer or nonwoven layer and salivation film are bonding with the edge of the edge of strip part and both wings, below the rectangular body of perforating film layer or nonwoven layer folded in regular turn be provided with protect paper, on the absorber core, protect paper and absorber core down.

It is poor that the weak point of above-mentioned 2 patents is that two imbibition abilities between the absorber are distinguished the formation certain absorption well, so in use liquid is difficult to enter into lower floor's absorber on the one hand, easy reverse osmosis after the imbibition on the other hand, the effect of a plurality of absorbent cores can't be performed to maximum, assimilation effect is not obvious.

Summary of the invention

At the problems referred to above, the present invention proposes a kind ofly to be difficult for reverse osmosis, to absorb novel diaper faster, better effects if.

For solving this technical problem, the present invention takes following scheme: a kind of novel diaper, comprise the liquid permeability surface layer, absorber, the opaque liquid bottom, left and right sides waist pastes and frontal waist plaster, described diaper have along the waistline direction extend laterally and by front waist region to the back waist region direction extend vertically, described absorber is located between liquid permeability surface layer and the opaque liquid bottom, described left and right sides waist is attached at the described opaque liquid bottom of back waist region both lateral sides, described frontal waist plaster is located at the described opaque liquid bottom of the front waist region outside, described absorber is by upper strata dumb-bell shape absorbent cores and lower floor's absorbent cores is stacked forms, it is 10%～20% super water-absorbing resins that described upper strata dumb-bell shape absorbent cores contains percentage by weight, it is 20%～35% super water-absorbing resins that described lower floor absorbent cores contains percentage by weight, and the projected area of described lower floor absorbent cores vertical direction is no more than 1/3rd of upper strata dumb-bell shape absorbent cores.

Preferred aforementioned novel diaper, described lower floor absorbent cores is provided with the plurality of through holes that runs through its upper and lower surface.

Preferred aforementioned novel diaper, described absorber is provided with a plurality of indents, and the density of this indent part is 3～10 times of the absorber other parts.

By adopting the aforementioned techniques scheme, the invention has the beneficial effects as follows: traditional view is all thought when adopting the biabsorption cored structure, general little absorbent cores in upper strata and the big absorbent cores of the lower floor stacked such structure mutually that adopts, think that it can absorb more urine in the central area on the one hand, and it is peripheral in the big absorbent cores of lower floor owing to liquid spreads less than adopting single layer structure, in fact also so do, the absorbtivity that really increases of the little absorbent cores in upper strata consequently, but the diaper that causes thus reaches more than 40 grams in the reverse osmosis test result of pressurizeing for the third time, to contain percentage by weight be 10%～20% super water-absorbing resins by upper strata dumb-bell shape absorbent cores is set, it is 20%～35% super water-absorbing resins that lower floor's absorbent cores contains percentage by weight, and the projected area of lower floor's absorbent cores vertical direction is no more than 1/3rd these structures of upper strata dumb-bell shape absorbent cores, show in three pressurizations of diaper reverse osmosis test result, pressurization reverse osmosis test result is less than 20 grams, therefrom this kind structure is arranged on the diaper amount of bleeding back aspect and has obtained beyond thought technique effect as can be seen, because two absorbent cores have different super water-absorbing resins ratios, therefore rate of liquid aspiration can not slow down simultaneously.

Description of drawings

Fig. 1 is the front view of the embodiment of the invention;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the front view of embodiment of the invention absorber;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is the C-C cutaway view of Fig. 3.

Wherein the sequence number of accompanying drawing and corresponding name are called: 1, hydrophilic nonwoven fabrics, 11, water conservancy diversion layer non-woven fabrics, 2, hydrophobic nonwoven, 3, upper strata toilet paper, 4, absorber, 41, big absorbent cores, 42, little absorbent cores, 5, lower floor's toilet paper, 6, PE counterdie, 7, frontal waist plaster, 8, the leakproof elastic, 9, lower limb encloses elastic, and 10, waist pastes.

The specific embodiment

Now the present invention is further described with specific embodiment in conjunction with the accompanying drawings.

With reference to figure 1-Fig. 5, present embodiment discloses a kind of novel diaper, it from top to bottom comprises successively: hydrophilic nonwoven fabrics 1, hydrophobic nonwoven 2, water conservancy diversion layer non-woven fabrics 11, upper strata toilet paper 3, big absorbent cores 41, little absorbent cores 42, lower floor's toilet paper 5, PE counterdie 6 and frontal waist plaster 7, wherein:

Described novel diaper have along the waistline direction extend laterally and by front waist region to the back waist region direction extend vertically, the both lateral sides of described hydrophilic nonwoven fabrics 1 is respectively equipped with hydrophobic nonwoven 2, the interior survey along the mid portion to hydrophilic nonwoven fabrics 1 of described two hydrophobic nonwoven 2 extends to form free margins, described free margins is provided with the leakproof elastic 8 of anti-side leakage, hydrophilic nonwoven fabrics 1 is connected with water conservancy diversion layer non-woven fabrics 11 by PUR, described water conservancy diversion layer non-woven fabrics 11 can the diffusion velocity of accelerating liquid in absorber, water conservancy diversion layer non-woven fabrics 11 is connected with upper strata toilet paper 3 by PUR, described upper strata toilet paper 3 is connected with absorber 4 by PUR, described absorber 4 comprises big absorbent cores 41 and little absorbent cores 42, it is 10% super water-absorbing resins that described big absorbent cores 41 contains percentage by weight, whole big absorbent cores is dumbbell-shaped structure, it is connected with little absorbent cores 42 by PUR, it is 30% super water-absorbing resins that described little absorbent cores 42 contains percentage by weight, described little absorbent cores 42 is provided with six through holes 421 that connect its upper and lower surface, these six through holes can improve the diffusion effect of liquid in absorber 4, the projected area of described little absorbent cores 42 vertical direction is 1/4th of big absorbent cores 41, the lower surface of absorber 4 is connected with lower floor toilet paper 5 by PUR, last aforementioned each ingredient is connected with PE counterdie 6 by PUR again, described PE counterdie 6 is made by ventilative but material impervious to water, between the described hydrophobic nonwoven 2 of diaper both lateral sides and PE counterdie 6, be respectively equipped with the lower limb that extends along the longitudinal direction and enclose elastic 9, the both lateral sides of described PE counterdie 6 back waist region respectively is provided with two waists and pastes 10, it can be fixed by the mode of bonding and mechanical pressing of PUR or supersonic thermal setting, and the front waist region of described PE counterdie 6 is provided with frontal waist plaster 7.

As another outer embodiment of the present invention, on the basis of previous embodiment, described absorber is not to improve its diffusion effect by offer six through holes on little absorbent cores, but a pair of indent is set on whole absorber, the density of this indent part is 5 times of other non-indent partial density, so globality that helps to increase whole absorbent cores prevents that it from use rupturing.

In the previous embodiment, the percentage by weight of super water-absorbing resins all is feasible in 10% to 20% scope in the dumb-bell shape absorbent cores of described upper strata, the difference of its degree mainly shows the difference of liquid absorption, can't therefore fundamentally influence the water absorbing properties of this absorbent cores.But require the weight percent content of super water-absorbing resins of lower floor's absorbent cores higher more than 5% than upper strata dumb-bell shape absorbent cores, preferably high more than 10%, like this, upper strata dumb-bell shape absorbent cores plays the effect of imbibition on the one hand, can not hinder grade liquid on the other hand to lower floor's absorbent cores infiltration, guarantee that purpose of the present invention is achieved, promptly obtain good reverse osmosis effect.

The test method of the amount of bleeding back of the present invention has adopted ISO11948-2:1997 " in the mensuration of mild incontinence and liquid release of following short time of low pressure (leakage) ", and the index that is adopted is GB15979-1995 " a disposable use hygienic article sanitary index ".

Claims

1. novel diaper, comprise the liquid permeability surface layer, absorber, the opaque liquid bottom, left and right sides waist pastes and frontal waist plaster, described diaper have along the waistline direction extend laterally and by front waist region to the back waist region direction extend vertically, described absorber is located between liquid permeability surface layer and the opaque liquid bottom, described left and right sides waist is attached at the described opaque liquid bottom of back waist region both lateral sides, described frontal waist plaster is located at the described opaque liquid bottom of the front waist region outside, it is characterized in that: described absorber is by upper strata dumb-bell shape absorbent cores and lower floor's absorbent cores is stacked forms, it is 7%～15% super water-absorbing resins that described upper strata dumb-bell shape absorbent cores contains percentage by weight, it is 20%～35% super water-absorbing resins that described lower floor absorbent cores contains percentage by weight, and the projected area of described lower floor absorbent cores vertical direction is no more than 1/3rd of upper strata dumb-bell shape absorbent cores.

2. novel diaper according to claim 1 is characterized in that: described lower floor absorbent cores is provided with the plurality of through holes that runs through its upper and lower surface.

3. novel diaper according to claim 2 is characterized in that: described absorber is provided with a plurality of indents, and the density of this indent part is 3～10 times of the absorber other parts.