CN1147278C

CN1147278C - Disposable wearable and usable absorptive article

Info

Publication number: CN1147278C
Application number: CNB971143587A
Authority: CN
Inventors: 宫本由纪
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 1996-12-28
Filing date: 1997-12-26
Publication date: 2004-04-28
Anticipated expiration: 2017-12-26
Also published as: MY127706A; ID19304A; SG67464A1; CN1192892A; KR19980064741A; JPH10192342A; TW341508B; KR100474145B1; JP3169341B2

Abstract

To prevent leakage by providing continuous filament layers for which a compression elastic recovery rate and a void volume are higher than the ones of a top sheet and a liquid absorptive core and the length range of a specified mm is made movable in a width direction without being fixed in a length direction on the liquid absorptive core. In the length direction of a crotch area, many continuous filament layers 12 are piled up on a fiber nonwoven fabric 16 for which METSUKE and density are lower and liquid permeability is higher than the top sheet 13. Both sides opposing in the width direction are rolled to an inner side and a barrier part 17 is formed. For the continuous filament layers 12, many continuous filaments 12a are opened and the compression elastic recovery rate and the void volume are made larger than the compression elastic recovery rate of the top sheet 13 and the liquid absorptive core 15 and the void volume between them. Also, the length of at least 10mm in the length direction of the respective filaments 12a is not fixed with each other and made movable in the width direction. By the constitution, fluid feces are interrupted and held between the continuous filaments 12a and fluid diffusion is prevented.

Description

Disposable wearable absorbent article

Technical field

The present invention relates to disposable wearable absorbent article, what have particularly that the old man that can prevent infant and bed or patient discharge has mobile excremental diffusion and spills the disposable wearable absorbing-article of effect.

Background technology

At present known have many kinds of disposable diapers, and they are to dispose the resettlement section that the solid-state Excreta of accommodating feces or the like uses and (such as can open flat 3-29123 communique referring to Japanese patent application is real by form perforate and/or recess and ring uplift portion on top flat and/or hygroscopicity core body, Japanese patent application is opened flat 4-15921 communique in fact, Japanese patent application is opened flat 5-86320 communique in fact, Japanese patent application is opened flat 6-5614 communique in fact, Japanese patent application is opened flat 6-7725 communique in fact, Japanese patent application is opened flat 6-11722 communique in fact, Japanese patent application is opened flat 6-21624 communique in fact, Japanese patent application is opened flat 6-21626 communique in fact, Japanese patent application is opened flat 6-31722 communique in fact, Japanese patent application is opened flat 6-31723 communique in fact).

In above-mentioned known diaper, solid-state excremental resettlement section is by perforate or recess and the occasion that forms on absorbent article core, do not have the performance that solid-state Excreta is fully seen through because be positioned at the top flat at its surface location place, be difficult to solid-state Excreta is directed in perforate or the recess; These perforates or recess are the occasions that forms with pad with liquid-absorbent and top flat, and what temporarily be stored in these perforates or recess place has mobile Excreta such as the soft dung and the feces of discharging when haveing loose bowels etc. and can adverse current diffuse on other regional topsheet surface; In addition, when adopting protrusion to form the occasion of above-mentioned resettlement section, also have the problems such as the wearer feels under the weather that make.

Summary of the invention

Problem of the present invention is exactly to solve the problem that above-mentioned known diaper exists, make have flowable feces easily by with the contact surface of skin on fall heavy and maintain, thereby can prevent in advance its with the contact surface of skin on diffuses flow and the wearer's skin and escape to outside etc. of making dirty.

The present invention relates to a kind of disposable wearable absorbent article that has improved, it comprise have the front and back waist district, crotch portion district between the front and back waist district, with the lamination pad of the contact surface of the contact surface of skin and non-and skin; Above-mentioned lamination pad is by constituting at the top flat with permeability for liquids on the contact surface above-mentioned and skin, the egative film that does not have permeability for liquids on the contact surface of above-mentioned non-and skin and the absorbent article core that is arranged between them; And above-mentioned crotch portion district is provided with the maintenance assembly of the usefulness that voids excreta.

The invention is characterized in after the improvement, above-mentioned maintenance assembly is made of the continuous filament yarn layer that is positioned at above-mentioned moisture absorption core body top and extend along its length direction, above-mentioned continuous filament yarn layer under moisture state elasticity of compression recovery rate and the space between each long filament all than the elasticity of compression recovery rate of above-mentioned top flat under moisture state and absorbent article core and the voidage height between each constituent material, and each long filament has at least the size of 10 millimeters long not interfix along its length direction, can move along the width of this layer between this size.

Specifically, the present invention can also further have following structures, be above-mentioned continuous filament yarn layer can by use the basic weight (Japanese basis weight) than above-mentioned top flat and density is low and permeability for liquids is high this layer of thin film blanketing below, keep its layer-by-layer state, and be fixed in this state on the surface of above-mentioned top flat; And above-mentioned continuous filament yarn layer can be with the above-mentioned flaky material below covering it, by warpage to the inside on both sides respect to one another, forms having the stop part of mobile feces; Above-mentioned continuous filament yarn layer can also be configured between above-mentioned top flat and the above-mentioned absorbent article core, also is formed with the length that makes this layer expose usefulness and is at least 50 millimeters, width and is at least 30 millimeters peristome on this top flat on this layer middle section; Above-mentioned continuous filament yarn layer also can be received and be contained in the length that is formed at above the above-mentioned absorbent article core and be at least 50 millimeters, width and be at least in 30 millimeters the recess, and is formed with length is at least 50 millimeters, width and is at least 30 millimeters peristome in above-mentioned top flat covers the zone of this layer; Above-mentioned in addition continuous filament yarn layer also can be received and be contained in the length that is formed at above the above-mentioned absorbent article core and be at least 50 millimeters, width and be at least in 30 millimeters the recess, and to be formed with diameter in above-mentioned top flat covers the zone of this layer at least be a plurality of peristomes of 2～15 millimeters; And above-mentioned top flat also can be formed with diameter be a plurality of peristomes of 2～15 millimeters.

Description of drawings

The expansion oblique view that Fig. 1 has cut open for the part of expression disposable diaper.

The amplification profile oblique view of Fig. 2 for having cut open along line A-A among Fig. 1.

Fig. 3 is the oblique view of second form of implementation of expression continuous filament yarn layer.

The amplification profile of Fig. 4 for having cut open along line B-B among Fig. 3.

Fig. 5 is the oblique view of another embodiment of second form of implementation of expression continuous filament yarn layer and top flat.

The specific embodiment

Below with reference to accompanying drawing, the disposable diaper of using with infant is the embodiment of example explanation article involved in the present invention.

As illustrated in figures 1 and 2, diaper is made of the lamination pad 1 that is the lengthwise flat.Lamination pad 1 have front and back waist district 2,3, the crotch district 4 between them, with the face 5 of contact skin and the face 6 of non-and contact skin, by these two faces 5,6, two side margins 7, two end edge 8 localized areas relative that width is relative with length direction.But but but lamination pad 1 also have a pair of flank 9 in elastic shrinkage relative on the width, relative in the longitudinal direction elastic shrinkage a pair of rear wing 10, be positioned at a pair of wing 11 that stops of the elastic shrinkage on a pair of flank 9, and a plurality of continuous filament yarn layers 12 that extend along crotch section length direction.

Lamination pad 1 by and the face 5 of contact skin on the top flat with liquid permeability 13, the egative film that does not have the liquid permeability 14 on the face 6 in non-and contact skin and the absorbent article core 15 that has between them constitute.

Continuous filament yarn layer 12 keeps assembly as feces and is provided with, the mobile Excretas such as feces of discharging when it is used to make haveing loose bowels of the old man of the soft dung of infant and bed or patient, particularly defecate, with the face 5 of contact skin on not diffuses flow and fall heavy, thereby can not spill from side margins 7 and/or end edge 8.

Continuous filament yarn layer 12 lamination be arranged on basic weight (Japanese basis weight) than top flat 13 and density is low and permeability for liquids is high fabric nonwoven cloth 16 above, and also have the stop part 17 that curls to the inside and form at two relative sidepieces of width.Non-woven fabrics 16 is bonded on the top flat 13 by suitable engagement means compartment of terrain.By under heating, carrying out embossing processing along its length direction by predetermined space at each the long filament 12a between two stop parts 17, so that prevent each long filament 12a because of undue perk, and attached on the wearer's skin, and peel off to get off.Each long filament 12a welding each other in fixed part 18, and the length dimension L between each fixed part 18 that is being adjacent to each other on its length direction is at least 10 millimeters has mobile feces and can fall heavy and be kept in the continuous filament yarn layer 12 so that make.In other words, when above-mentioned size L more than 10 millimeters the time, have mobile feces and can rely on deadweight to clamp-on between each long filament 12a to the continuous filament yarn layer 12 and fall heavyly, this is because at this moment each long filament 12a is easy in continuous filament yarn layer 12 that broad ways moves and to promote that this falls heavy.Size L is preferably 25～50 millimeters, and when surpassing 50 millimeters, because that long filament 12a moves is too easy, the retentivity to the feces of flowability descends on the contrary.The fleece that continuous filament yarn layer 12 can form by the tow of many continuous filament yarns is implemented the opening fiber operation constitutes, long filament 12a has and curls, voidage between each long filament 12a is 60～85%, and have and be at least 30%, be preferably the elasticity of compression recovery rate more than 50%, so that can effectively reach needed purpose.Under moisture state, this elasticity of compression recovery rate and voidage want high more than the elasticity of compression recovery rate and the voidage between these constituent materials of top flat under moisture state 13 and hygroscopicity core 15.Particularly in order to obtain the desired compression elastic restoration ratio under moisture state, long filament 12a is preferably has the hydrophobic material that danier is the polyester or the like of 1～15d.And continuous filament yarn layer 12 can include the hydrophilic long filament of artificial silk below 30% or the like.Though not shown, stop part 17 also can be formed on two ends of length direction of continuous filament yarn layer 12.

In Fig. 3 and Fig. 4, continuous filament yarn layer 12 is configured in top flat 13 and has between the core body 15 of liquid-absorbent, and on the top flat on the middle section of continuous filament yarn layer 12 13, be formed with length and be at least 50 millimeters, width and be at least 30 millimeters peristome 19, and continuous filament yarn layer 12 is from peristome 19 protuberances and outstanding.

In Fig. 5, continuous filament yarn layer 12 is received in advance and is contained in by at least length of compression process on absorbent article core 15 is that 50 millimeters, width are in 30 millimeters the recess 20, is formed up to the youthful and the elderly's degree again and is 50 millimeters, width in the blanketing of top flat 13 zone of continuous filament yarn layer 12 and be 30 millimeters peristome 19.In addition, the top flat 13 with peristome 19 also can substitute with the top flat 13 with many aftermentioned perforates 21.

Obviously, following requirement is satisfied in the above-mentioned continuous filament yarn layer 12 and the design of peristome 19: make at least that filament layer 12 and peristome 19 are its extended around of middle mind-set with the position facing to anus when diaper uses, thereby mobile feces directly is excreted on the continuous filament yarn layer 12.

Top flat 13 preferably is made of fabric nonwoven cloth, and has many perforates 21.Consider from the delicate skin of infant, this non-woven fabrics can adopt the article except chemically combined non-woven fabrics, promptly can adopt melt and spray, non-woven fabrics such as spunlaced, needle point method, thermal, spunbond combination, it is best particularly adopting the non-woven fabrics that melts and sprays as superfine fibre.Such non-woven fabrics is made of hydrophobicity and/or hydrophilic fibre, in order not produce the moist feeling that skin is felt under the weather, preferably should be made of the hydrophobic fibre that accounts for 70 weight %.Perforate 21 be preferably can make have that mobile feces therefrom sees through, diameter be 2～15 millimeters, percent opening is 40～80% hole.Perforate 21 is positioned at the illustrated planar form except having, and can also extend 0.3～3 millimeter guiding tube below it.Even also can also have smaller perforate 21, and preferably make drain site with corresponding to the mobile occasion in little perforate 21 districts from big peristome 19 for top flat 13 with bigger peristome 19.

In Fig. 1 and Fig. 2, make each flank 9 have the function of the Excreta of preventing from wearer's lower limb root leakage, and make to be positioned at the egative film part 14a that extends to the outside from the lateral margin of absorbent article core 15 and to be positioned at the Outboard Sections 11a that stops the wing 11 above it by suitable engagement means and engage one another and constitute, but a plurality of fibrous elastomeric elements 22 arranged side by side along the length direction elastic shrinkage of lamination pad 1 are bonded on part 14a by suitable engagement means, between the 11a.

Stop that respectively the wing 11 has feces with flowability and is enclosed in by these and stops function in the zone that the wing limits, and by Outboard Sections 11a and thus to absorbent article core 15 sides extend and to the inside the inside part 11b of warpage constitute, but be bonded in this warpage part by suitable engagement means along a plurality of fibrous elastomeric elements 23 arranged side by side of the length direction elastic shrinkage of lamination pad 1.The elastomeric element 23 that respectively stops the wing 11 is under elongation state, by the centre of punch place of the width of inside part 11b warpage laterally, and by suitable engagement means two end sections 11c in lamination pad 1 length direction are fixed on the Outboard Sections 11a in this state.Inside part 11b also is bonded on the prolongation 13a of the top flat in the position 24 by suitable engagement means.Therefore, inside part 11b has the trend that will erect under the resilient force of elastomeric element 23.And inside part 11b also can not resemble above-mentioned warpage laterally, but be fixed on the contact surface 5 lamination pad 1 and skin relative with its inner face.

Each holds the wing 10 when remaining on diaper on the waist, also have and prevent to spill excremental function from people's waist, and by from absorbent article core 15 ora terminalis outward extending egative film part 14b and above be bonded with each other by suitable engagement means across the prolongation 13b of the top flat 13 of elastomeric element 25 and form.Elastomeric element 25 is made of the bigger spongiform band of width, but and is the state that is in elastic shrinkage along its length and is installed between part 13b, the 14b.Elastomeric element 25 preferably adopts the polyurethane foam plastics with open bore, so that it has air permeability and good and flexibility, thereby makes the waist of diaper be unlikely to stretching tight at less infant waist of month of tension.Elastomeric element 25 with this specific character also can be as above-mentioned flank and the

elastomeric element

22,23 that stops on the wing.

As top flat 13,, also can adopt known surfacing with plastic sheeting of many perforates as these class article except non-woven fabrics.Can adopt laminated shim that the plastic sheeting of water penetration or it and fabric nonwoven cloth constitute as egative film 14.Be understood that above-mentioned flank 9 and rear wing 10 are to constitute with this class non-woven fabrics and plastic sheeting, so have good flexibility.Core body 15 with liquid-absorbent can be with main by pulverizing the mixture that wood pulp sheet sheet type pulp board that is obtained and the polymer particle with high-absorbable constitute, compression forming is the pad with suitable thickness, and constitutes after covering has the diffusible thin paper of liquid thereon.Therefore core body 15 has certain rigid, makes to be at diaper to be unlikely to produce gross distortion when routine wears state.For example, polymer with high-absorbable can be starch based graft polymers, cellulose degeneration thing, water soluble polymer commissure thing, from commissure type alkali metal salts of acrylic acids polymer etc., they are absorbing material known and that use in original physiological napkin and disposable diaper.

As the diaper of lamination pad 1, assemble on egative film 14 outsides in waistline district 2 before can strippingly being bonded in by the free end of the known pressure-sensitive haftplatte band 26 of 3 both sides, waistline district after will being installed in said structure formation.This diaper is commonly referred to as opens the type diaper, and diaper constructed according to the invention not only can constitute this type diaper of opening, Breeches type (pull-up type) diaper that the lumbar region is connected in advance before and after being applicable to too.

And in above-mentioned description process, do not relate to the connected mode and the means of each component parts, because these all are as well known to those skilled in the art, for example, the connection means can be hot-melt adhesive or heating and ultrasonic fusing or the like.

In article involved in the present invention, voidage between each long filament of continuous filament yarn layer is than top flat and have voidage height between the constituent material of core body of liquid-absorbent, and owing to each long filament broad ways moves easily, so having mobile feces is pressed between each long filament easily, fall heavy from the surface of continuous filament yarn layer and be held, so just, can make its not along with the contact surface diffuses flow of skin, can not spill from the side margins and the end edge of article yet.Because the continuous filament yarn layer has quite high elasticity of compression recovery rate under moisture state, even so under the moisture state that discharged liquid causes, also can keep above-mentioned voidage, have simultaneously than higher flexibility and breathability, thereby can make wearer's sense of touch good.

Be arranged on the occasion of the surface of top flat by the liquid infiltration thin film for the continuous filament yarn layer, can be formed in and to have on the both sides or two ends of the stop part continuous filament yarn layer that mobile feces uses with this layer self, thereby can further effectively prevent to have the diffuses flow of the feces of flowable.

For the continuous filament yarn layer in top flat and the occasion that absorbs between the green sand core and expose from the peristome that is formed on top flat, except easily the continuous filament yarn layer fitly being fixed on the lamination pad easily, can also by only make needed part with the surface of contact skin on expose effectively so that prevent the heavy damage of each fiber alignment in advance by contacting with skin.

Receive the occasion be contained in the recess that is formed on the core body place with liquid-absorbent for the continuous filament yarn layer, the feces diffuses flow of flowability that can effectively prevent to flow into the continuous filament yarn layer is outside this recess area.

Have the occasion of many perforates for top flat, have mobile feces and also can see through these perforates, so unnecessary the peristome bigger than these perforates be set.

Claims

1. disposable wearable absorbent article, it comprises forward and backward waistline district, the crotch district between forward and backward waistline district, have the lamination pad with the face of the face of contact skin and non-and contact skin; Above-mentioned lamination pad is by constituting at the top flat of the transflective liquid on the face of above-mentioned and contact skin, the liquid-tight egative film on the face of above-mentioned non-and contact skin and the absorbent article core that is arranged between them; Be provided with the maintenance assembly of the usefulness that voids excreta in above-mentioned crotch district;

Above-mentioned maintenance assembly constitutes by being positioned at above-mentioned continuous filament yarn layer core body top, that extend along its length direction with liquid-absorbent, above-mentioned continuous filament yarn layer under moisture state elasticity of compression recovery rate and the voidage between each long filament all than the elasticity of compression recovery rate of the core of above-mentioned top flat under moisture state and moisture absorption and the voidage height between each constituent material, each long filament has at least the size of 10 millimeters long not interfix along its length direction, can move along the width of described layer between this size.

2. articles for use as claimed in claim 1, it is characterized in that, above-mentioned continuous filament yarn layer by use than the basic weight of above-mentioned top flat and density is low and permeability for liquids is high flaky material cover this layer below, and keep its layer-by-layer state, and be fixed on the surface of above-mentioned top flat in this state.

3. articles for use as claimed in claim 2 is characterized in that, above-mentioned continuous filament yarn layer is with the above-mentioned flaky material of blanketing below it, on both sides toward each other, by warpage to the inside, form having the stop part of mobile feces.

4. articles for use as claimed in claim 1, it is characterized in that, above-mentioned continuous filament yarn layer is configured between above-mentioned top flat and the above-mentioned absorbent article core, is formed with the length that this layer exposed and is at least 50 millimeters, width and is at least 30 millimeters peristome on this top flat on this layer middle section.

5. articles for use as claimed in claim 1, it is characterized in that, above-mentioned continuous filament yarn layer is received and is contained in the length that is formed on above the above-mentioned absorbent article core and is at least 50 millimeters, width and is at least in 30 millimeters the recess, is formed with length and is at least 50 millimeters, width and is at least 30 millimeters peristome in above-mentioned top flat covers the zone of this layer.

6. articles for use as claimed in claim 1, it is characterized in that, above-mentioned continuous filament yarn layer is received and is contained in the length that is formed at above the above-mentioned absorbent article core and is at least 50 millimeters, width and is at least in 30 millimeters the recess, is formed with diameter and is a plurality of peristomes of 2～15 millimeters in above-mentioned top flat covers the zone of this layer.

7. one kind as the described articles for use of any one claim in the claim 1 to 3, it is characterized in that, it is a plurality of peristomes of 2～15 millimeters that above-mentioned top flat is formed with diameter.