CN101889924B

CN101889924B - Novel paper diaper

Info

Publication number: CN101889924B
Application number: CN201010225625XA
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: 2012-11-28
Anticipated expiration: 2030-07-10
Also published as: CN101889924A

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 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; Said diaper have along the waistline direction extend laterally and by front waist region to the back waist region direction extend vertically; Said absorber is located between liquid permeability surface layer and the opaque liquid bottom, and said left and right sides waist is attached at the said opaque liquid bottom of back waist region both lateral sides, and said frontal waist plaster is located at the said 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 "; By the anter of permeation liquid and back and the absorbent article that places the absorber between two to constitute of liquid impermeable; Said absorber is made up of two-layer at least; The ground floor that is disposed adjacent anter is to be made up of hydrophilic fibers and hot-melt adhesive fiber, is placed on the second layer that approaches the back sheet and is made up 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 descend the absorber core.

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; Can't the effect of a plurality of absorbent cores be performed to maximum, assimilation effect is not obvious.

Summary of the invention

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

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

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

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

Through 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 each other that adopts; Think that it can absorb more urine in the central area on the one hand, and peripheral in the big absorbent cores of lower floor because 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, and to contain percentage by weight be 10%～20% super water-absorbing resins through upper strata dumb-bell shape absorbent cores is set, and 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 that in three pressurizations of diaper reverse osmosis test result pressurization reverse osmosis test result can find out therefrom that less than 20 grams this kind structure is arranged on the diaper amount of bleeding back aspect and has obtained beyond thought technique effect; Because two absorbent cores have different super water-absorbing resins ratio, 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, the upper strata toilet paper; 4, absorber, 41, big absorbent cores, 42, little absorbent cores; 5, lower floor's toilet paper, 6, the PE counterdie, 7, frontal waist plaster; 8, leakproof elastic, 9, lower limb encloses elastic, 10, waist pastes.

The specific embodiment

Combine accompanying drawing and specific embodiment that the present invention is further specified at present.

With reference to figure 1-Fig. 5; Present embodiment discloses a kind of 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:

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

As another outer embodiment of the present invention; On the basis of previous embodiment; Said absorber is not to improve its diffusion effect through on little absorbent cores, offering six through holes, but on whole absorber, a pair of indent is set, and 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 said 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 the object of the 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. diaper; Comprise that liquid permeability surface layer, absorber, opaque liquid bottom, left and right sides waist paste and frontal waist plaster; Said diaper have along the waistline direction extend laterally and by front waist region to the back waist region direction extend vertically; Said absorber is located between liquid permeability surface layer and the opaque liquid bottom; Said left and right sides waist is attached at the said opaque liquid bottom of back waist region both lateral sides; Said frontal waist plaster is located at the said opaque liquid bottom of the front waist region outside, it is characterized in that: said absorber is by upper strata dumb-bell shape absorbent cores and lower floor's absorbent cores is stacked forms, and it is 7%～15% super water-absorbing resins that said upper strata dumb-bell shape absorbent cores contains percentage by weight; It is 20%～35% super water-absorbing resins that said lower floor absorbent cores contains percentage by weight, and the projected area of said lower floor absorbent cores vertical direction is no more than 1/3rd of upper strata dumb-bell shape absorbent cores.

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

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