CN108472176A

CN108472176A - Disposable diaper

Info

Publication number: CN108472176A
Application number: CN201680076910.5A
Authority: CN
Inventors: 笹山贤; 笹山贤一; 谷本圭; 近藤唯
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2015-12-28
Filing date: 2016-09-12
Publication date: 2018-08-31
Anticipated expiration: 2036-09-12
Also published as: KR102573001B1; JP2017118972A; WO2017115497A1; KR20180099766A; CN108472176B; JP6407138B2

Abstract

The disposable diaper has upper and lower directions and is provided with：Skin lateral plate (32), is arranged in skin side；Non-skin lateral plate (33), is arranged in non-skin side；Scalable non-woven fabrics (38), is arranged between skin lateral plate (32) and non-skin lateral plate (33)；And multiple weld portions (39), it is located at the position at least than upper end on the lower in waist portion (24), and skin lateral plate (32), non-skin lateral plate (33) and scalable non-woven fabrics (38) are bonded together.Bonding agent is not present in the distributed areas (X) that multiple weld portions (39) are distributed in waist portion (24).The disposable diaper is characterized in that at least part contact skin of the distributed areas (X) positioned at skin lateral plate (32) during wearing disposable diaper.

Description

Disposable diaper

Technical field

The present invention relates to disposable diapers.

Background technology

Traditionally, disposable diaper is known as the absorbent commodity for absorbing the excreta such as urinated.Such as patent document 1 It shows, utilizes disposable diaper, it is known that non-telescoping property non-woven fabrics is fixed to telescopic sheet in non-telescoping property non-woven fabrics Middle formation rivel.

Existing technical literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 10-99373

Invention content

Problems to be solved by the invention

However, in the disposable diaper 1 shown in patent document 1, fixed telescopic sheet 3A and non-woven fabrics 3B is to obtain Back sheet 3, and back sheet 3 is adhered to positive dough sheet 2 using bonding agent, thus presence is caused due to solidification of bonding agent etc. Quality deterioration risk.

The present invention is realized in view of such as above-mentioned traditional problem, and the purpose of the present invention is improve disposable diaper Quality.

The solution to the problem

Realize that the aspect of the present invention of object above is a kind of disposable diaper, it is described disposable with upper and lower directions Diaper includes：Skin lateral plate, is arranged in skin side；Non-skin lateral plate is arranged in non-skin side；Scalable non-woven fabrics, It is arranged between the skin lateral plate and the non-skin lateral plate；And multiple weld portions, it is arranged in waist portion extremely Few position than upper end on the lower, the multiple weld portion make the skin lateral plate, the non-skin lateral plate and described stretch Contracting non-woven fabrics engages, and bonding agent, the skin is not present in the distributed areas that the multiple weld portion is distributed in the waist portion At least part of the distributed areas of lateral plate contacts skin during wearing the disposable diaper.

The other feature of the present invention will become apparent from the explanation in the description and the appended drawings.

The effect of invention

According to the present invention, in weld portion, due to welding, density is larger and thickness is relatively low, and the area between weld portion In domain, thickness is higher than weld portion, and forms the chevron shape of bulging.For the reason, when wearer puts on the disposable diaper When, chevron shape contacts the skin of wearer, therefore can assign the feeling of wearer's tender texture.In addition, welding is distributed with Be not present bonding agent in the distributed areas (dotted region) in portion, and by non-woven fabrics rather than film provides retractility, Therefore more soft quality may be implemented.

Description of the drawings

Fig. 1 is the schematic perspective view of diaper 1 according to the embodiment of the present invention.

Fig. 2 is the plan view of the diaper 1 in unfolded state.

Fig. 3 is the sectional view of the diaper 1 in unfolded state.

Fig. 4 is the plan view for the position for showing waist portion 24 and crotch panel 50 in the diaper 1 in unfolded state.

Fig. 5 is front side joint portion 62, rear side joint portion 66 and the main body joint portion shown in the diaper 1 in unfolded state The plan view of 70 position.

Fig. 6 is front view of the diaper 1 when from 30 side of preceding body piece in Fig. 1.

Fig. 7 is the plane for the position for showing distributed areas X and body junction area Y in the diaper 1 in unfolded state Figure.

Fig. 8 is the figure for showing the part A in Fig. 1.

Fig. 9 A are the sectional views along the D-D interceptions in Fig. 8.Fig. 9 B are the sectional views along the E-E interceptions in Fig. 8.Figure 9C is the sectional view of the part in the waist portion using Collapsible strainer.

Figure 10 is the figure in the section for schematically showing scalable non-woven fabrics 38 (48).

Specific implementation mode

At least following item will be apparent from the explanation in the description and the appended drawings.

Disposable diaper, with upper and lower directions, the disposable diaper includes：Skin lateral plate, is arranged in skin side； Non-skin lateral plate is arranged in non-skin side；Scalable non-woven fabrics is arranged in the skin lateral plate and the non-skin lateral plate Between；And multiple weld portions, it is arranged at the position at least than upper end on the lower in waist portion, the multiple welding Portion keeps the skin lateral plate, the non-skin lateral plate and the scalable non-woven fabrics engagement, being distributed with for the waist portion described Bonding agent is not present in the distributed areas of multiple weld portions, and at least part of the distributed areas of the skin lateral plate is being worn Skin is contacted during the disposable diaper.

According to the disposable diaper, in weld portion, it is attributed to welding, the more high and thick degree of density is relatively low, and in weld portion Between region in, thickness is higher than weld portion, and forms the substantially chevron shape of bulging.For the reason, when wearer puts on When disposable diaper, the substantially skin contact of chevron shape and wearer, therefore the feeling of wearer's tender texture can be assigned.This Outside, be not present bonding agent in the distributed areas that multiple weld portions are distributed with, and by non-woven fabrics rather than film provide it is flexible Property, therefore more soft quality may be implemented.

Using the disposable diaper, wherein preferably, the upper end does not include more including the scalable non-woven fabrics A elastica.

According to the disposable diaper, scalable non-woven fabrics is arranged lower than the upper end in waist portion, therefore can provide can Smooth fitting of the whole surface of flexible non-woven fabrics to abdomen, it is possible thereby to accommodate rising due to the abdomen of wearer's breathing etc. Volt.On the other hand, elastica is set to the upper end in waist portion, thus can utilize linear elastica inhibit disposable diaper to The risk of lower landing.

Using the disposable diaper, wherein preferably, the non-skin lateral plate is turned back downwards from upper end to the skin The upper end of lateral plate side, the non-skin lateral plate is arranged to more against the top than the upper end of the skin lateral plate, and the multiple bullet Property line is configured in the upper and lower directions between the upper end of the non-skin lateral plate and the upper end of the skin lateral plate.

According to the disposable diaper, skin lateral plate is not provided between elastica and non-skin lateral plate, therefore can be improved Stickiness during wearing.

Using the disposable diaper, wherein preferably, the disposable diaper includes the cross intersected with the upper and lower directions Include absorbent main body, preceding body piece and rear body piece to, the disposable diaper, the disposable diaper include make it is described before Multiple end joint portions of body piece and the rear body piece engagement, the disposable diaper are provided with end engaging zones, The multiple end joint portion is distributed in the end engaging zones, the disposable diaper is provided with absorbent main body engagement Region, the non-skin side of absorbent main body described in the absorbent main body engaging zones, described are stretched the skin lateral plate Contracting non-woven fabrics and the non-skin lateral plate engagement, be located at the absorbent main body engaging zones the skin lateral plate, it is described can Flexible non-woven fabrics and the non-skin lateral plate are provided with another distributed areas, are distributed in another distributed areas described more The gross area of a weld portion, the multiple weld portion of the per unit area of another distributed areas is engaged less than the end The gross area at the end joint portion of the per unit area in region.

According to the disposable diaper, the gross area of multiple weld portions of per unit area is less than end in another distributed areas The gross area at the end joint portion of the per unit area of engaging zones, it is hereby ensured that the bond strengths in the engaging zones of end And ensure the gas permeability in another distributed areas.

Using the disposable diaper, wherein preferably, the disposable diaper includes absorbent main body, the disposable urine Cloth is provided with absorbent main body engaging zones, the non-skin of absorbent main body described in the absorbent main body engaging zones Side, the skin lateral plate, the scalable non-woven fabrics and non-skin lateral plate engagement, are located at the absorbent main body bonding land The skin lateral plate, the scalable non-woven fabrics and the non-skin lateral plate in domain are provided with another distributed areas, described another The multiple weld portion is distributed in one distributed areas, and the per unit area in the distributed areas is the multiple molten The gross area of socket part is less than the gross area of the multiple weld portion of the per unit area in another distributed areas.

According to the disposable diaper, the gross area of multiple weld portions of per unit area is less than another distribution in distributed areas The gross area of multiple weld portions of per unit area in region, therefore absorption phosphor bodies can be inhibited to shrink in the horizontal, and It may also be ensured that the appropriate gas permeability of entire disposable diaper.

Using the disposable diaper, wherein preferably, the distributed areas configure the multiple weld portion with uniform intervals.

According to the disposable diaper, the skin of skin lateral plate and wearer is uniformly in contact with therefore can improving for wearing The quality of user.

Using the disposable diaper, wherein preferably, the waist portion do not include the upper end and it is another point described The multiple weld portion is arranged with uniform intervals in whole region in the region in cloth region.

According to the disposable diaper, distributed areas are set to wider range, therefore can improve the outer of disposable diaper It sees.

Using the disposable diaper, wherein preferably, the scalable non-woven fabrics contains polyolefin and polyurethane.

According to the disposable diaper, scalable non-woven fabrics includes polyolefin, therefore improves skin lateral plate and non-skin lateral plate Weldability, and due to including polyurethane, it is possible to improve scalable non-woven fabrics in above-below direction on left and right directions Retractility.

Using the disposable diaper, wherein preferably, the scalable non-woven fabrics the weld portion adjacent to each other it Between thickness be more than the scalable non-woven fabrics the middle position of each weld portion thickness.

According to the disposable diaper, when wearing diaper, the scalable nonwoven before the skin that weld portion contacts wearer Cloth contacts the skin of wearer, therefore can provide soft quality.

Using the disposable diaper, wherein preferably, the scalable nothing between the weld portion adjacent to each other At least part of woven fabric contacts the skin lateral plate or the non-skin lateral plate.

According to the disposable diaper, for example, in the case of part contact skin of the scalable non-woven fabrics between weld portion from Cushioning effect, therefore quality can be improved.

Using the disposable diaper, wherein preferably, the disposable diaper includes the cross intersected with the upper and lower directions To by a pair of weld portion adjacent to each other and a pair of of institute adjacent to each other in the cross direction in the upper and lower directions The region for stating weld portion encirclement includes protrusion, and the protrusion is set to skin side and non-skin side.

According to the disposable diaper, protrusion is all set on the surface two sides of skin side and non-skin side, therefore can be into one Step improves quality.

Using the disposable diaper, wherein preferably, the scalable non-woven fabrics is with first area and with than described The second area of the high fibre density of fibre density of first area, and

The first area and the second area are arranged alternately along predetermined direction.

According to the disposable diaper, the region with high microsteping density is set to scalable non-woven fabrics, therefore improves soft Softness and it can further improve quality.

Using the disposable diaper, wherein preferably, in the upper and lower directions, in the upper end of the scalable non-woven fabrics The fibre density of the scalable non-woven fabrics in portion is more than the scalable non-woven fabrics in the central portion in the waist portion Fibre density.

According to the disposable diaper, the fibre density in the upper end of scalable non-woven fabrics is set higher, therefore i.e. Make the damage that can also inhibit tearing etc. in the case where pulling up the upper end of disposable diaper when wearer puts on diaper Bad risk.On the other hand, the fibre density of the scalable non-woven fabrics in the central portion in waist portion is set low, therefore can To improve the gas permeability near waist.

Using the disposable diaper, wherein preferably, the disposable diaper includes the cross intersected with the upper and lower directions To the disposable diaper includes：Outer-skin sheet, with preceding body piece, rear body piece and be arranged in the preceding body piece with Crotch after described between body piece, wherein predecessor's piece portion is engaged with the crotch, and the body piece afterwards with it is described Crotch engages；And absorbent main body, it is arranged to continuously extend to the rear body piece, the suction from the preceding body piece The property received absorbent body excreta, predecessor's piece lateral margin in the transverse direction of the preceding body piece with it is described after body piece the cross Upward rear body piece lateral margin engagement, the crotch are provided with crotch leg rivel, and the crotch leg rivel be not engaged to it is described Absorbent main body, and the joint portion of the preceding body piece and the crotch is arranged in the longitudinal direction as the upper and lower directions On than predecessor's piece lateral margin the crotch side end lean on the crotch side.

According to the disposable diaper, adherent feeling of the disposable diaper at femoribus internus and abdomen can be improved.

===disposable diaper according to the present embodiment===

Fig. 1 is the schematic perspective view of disposable diaper according to the embodiment of the present invention, and Fig. 2 is to be in unfolded state Diaper 1 plan view, Fig. 3 is the sectional view of the diaper 1 in unfolded state, and Fig. 4 is to show the diaper 1 in unfolded state In waist portion 24 and crotch panel 50 position plan view, Fig. 5 is the front side joint portion shown in the diaper 1 in unfolded state 62, the plan view of the position at rear side joint portion 66 and main body joint portion 70, Fig. 6 are diapers 1 in Fig. 1 from 30 side of preceding body piece Front view when observation.

In the following description, the diaper 1 of state shown in FIG. 1 (wearing state) is in " upper and lower directions " and upper and lower " transverse direction " that direction intersects and " thickness direction " with upper and lower directions and lateral cross.In addition, being in state shown in Fig. 2 The length direction of the diaper 1 of (unfolded state) will also be referred to as " length direction ", one end on the length direction of diaper 1 and another Both ends will also all be referred to as " upper end ", and the center CL on the length direction of diaper 1 will also be referred to as " lower end ".In addition, opposite In thickness direction, that side contacted with wearer will be referred to as " skin side ", and opposite side will be referred to as " non-skin side ".Figure Line C-C in 2 etc. indicates the center in transverse direction.Note that Fig. 3 is along the sectional view of line C-C interceptions, and for convenience's sake Weld portion 39 and 49 (aftermentioned) is not shown.In addition, for example there is the situation for omitting weld portion 39 and 49 etc. in attached drawing, and ratio It is not necessarily accurate.In addition, the weld portion 49a and 49b of rear body piece 40 are not shown for convenience's sake, in Fig. 6.

The disposable diaper 1 (hereinafter referred to as " diaper 1 ") of present embodiment is the shorts type diaper mainly worn by adult (pull-on diaper), disposable diaper 1 include being configured at the absorbent main body 10 of the crotch of wearer and positioned at absorbability master The outer-skin sheet 20 of the non-skin side of body 10, and further include waist opening portion 1a and a pair of of leg opening part 1b, 1b.In addition, urine Multiple elastica 30a and 40a are provided in the upper end 25 of cloth 1.

Outer-skin sheet 20 has preceding body piece 30, rear body piece 40, the crotch between preceding body piece 30 and rear body piece 40 Piece 50 (is also known as " crotch ").Crotch panel 50 is in the longitudinal direction between preceding body piece 30 and rear body piece 40, using viscous The preceding body piece 30 of the fixation such as agent and crotch panel 50 are connect, and uses body piece 40 and crotch panel 50 after the fixation such as bonding agent.

Preceding body piece 30 is part corresponding with the abdomen of wearer, and rear body piece 40 is and the back of wearer (buttocks) Corresponding part, crotch panel 50 are parts corresponding with the crotch of wearer.Absorbent main body 10 with preceding body piece 30, rear body piece 40 and the mode that is overlapped of crotch panel 50 be arranged to be cross over rear body piece 40 from preceding body piece 30, and using bonding agent by absorbability Main body 10 is joined to the outer-skin sheet 20 in joint portion 70.

The face shaping of diaper 1 is generally H shape in plan view (Fig. 2), and when with the center CL under unfolded state When making 1 liang of folding of diaper as folding position and then engaged at the engaging zones Z of end, waist portion 24, waist opening portion 1a are formed With a pair of of leg opening part 1b, 1b.End engaging zones Z is such region：In this region, the upper end of predecessor's piece lateral margin 31 The location matches of the upper end 41a of the position of 31a and rear body piece lateral margin 41, the position of the lower end 31b of predecessor's piece lateral margin 31 and rear body The location matches of the lower end 41b of piece lateral margin 41, and predecessor's piece lateral margin 31 and rear body piece lateral margin 41 are along from the upper end (upper ends 31a The region for 41a) arriving lower end 31b (lower end 41b) engages.

Multiple end joint portions 29 (Fig. 6) are provided in the engaging zones Z of end.End joint portion 29 is by application ultrasound The part that wave vibrates and pressure makes preceding body piece 30 and the ultrasonic rolling land engagement of rear body piece 40 and is formed, and end joint portion 29 It all has elliptical shape and is configured with uniform intervals.Note that in figure 6 from end engaging zones Z's and end engaging zones Z Weld portion 39a is omitted in lateral outer side.

There is end engaging zones Z length, the length to be located at uppermost side from end joint portion 29 in the up-down direction Upper end 29u extend to the lower end 29d positioned at bottom side at end joint portion 29, and end engaging zones Z is in the horizontal With length, the position that is located at laterally outermost horizontal end 29e extends to end joint portion 29 of the length from end joint portion 29 In laterally innermost horizontal end 29i, therefore end engaging zones Z has substantially rectangular shape, and indicates end engagement by Sz The area of region Z.

At this time, it is preferred that the gross area (Rz) at the end joint portion 29 of per unit area is predetermined value or more.Change speech It, it is preferred that the end joint portion 29 for being set to end engaging zones Z of the area (Sz) relative to end engaging zones Z The gross area (Tz) be predetermined value more than, be, for example, 15% or more (Rz=Tz/Sz >=15%).This is because end engaging zones Z is necessary to ensure that enough bond strengths, with the separation of body piece 30 and rear body piece 40 before preventing when wearing diaper.In this reality It applies in mode, Rz substantially 19%.

Absorbent main body 10 for absorbing the excreta such as urinated has rectangular shape in the plan view, and has There is the long side of the length direction extension along diaper 1.Absorbent main body 10 has absorber 11 (Fig. 2).

Absorber 11 is the absorbent core obtained by the way that liquid absorptive material layer is laminated, and can absorb and such as to urinate Excreta.Absorber 11 has paper pulp fiber and absorbable polymer (SAP) etc..In addition, absorber 11 is covered with such as nonwoven The liquid-permeable sheet of cloth, and in a thickness direction, absorber 11 is being clipped in back sheet 14 and the liquid permeability made of non-woven fabrics etc. just Between dough sheet 12, back sheet 14 have include the opaque liquid piece made of polyethylene (PE) etc. and made of non-woven fabrics etc. thoroughly The double-layer structure of fluidity piece.

Preceding body piece 30 has front side waist portion 24a (waist portion 24) and positioned at 50 side of crotch panel of front side waist portion 24a Predecessor's piece crotch side region 34.As shown in figure 4, front side waist portion 24a has rectangular shape, front side waist portion in the plan view 24a has in the up-down direction that 31a extends to the length of lower end 31b from upper end, and front side waist portion 24a has in the horizontal from position The length positioned at predecessor's piece lateral margin 31 of the other side is extended in predecessor's piece lateral margin 31 of side, and front side waist portion 24a has Have along the long side being laterally extended and the short side alongst extended.In addition, predecessor's piece crotch side region 34 is in the plan view Shape with similar isosceles trapezoid.

Similarly, rear body piece 40 has rear side waist portion 24b (waist portion 24) and the crotch panel positioned at rear side waist portion 24b The rear body piece crotch side region 44 of 50 sides, and rear side waist portion 24b has rectangular shape, rear side waist portion in the plan view 24b has in the up-down direction that 41a extends to the length of lower end 41b from upper end, and rear side waist portion 24b has in the horizontal from position The length positioned at the rear body piece lateral margin 41 of the other side, and rear side waist portion 24b tools are extended in predecessor's piece lateral margin 41 of side Have along the long side being laterally extended and the short side alongst extended.In addition, rear body piece crotch side region 44 is in the plan view Shape with similar isosceles trapezoid.

As shown in figure 3, preceding body piece 30 and rear body piece 40 respectively include the skin side for the skin side for being set to wearer Piece 32 and 42 and be set to non-skin side non-skin lateral plate 33 and 43, be set to skin lateral plate 32 and non-skin lateral plate 33 it Between scalable non-woven fabrics 38 and the scalable non-woven fabrics 48 that is set between skin lateral plate 42 and non-skin lateral plate 43.

Skin lateral plate 32 and 42 and non-skin lateral plate 33 and 43 be flexible sheet element, and be by polypropylene (PP) fiber Manufactured spun-bonded non-woven fabrics.Preferably, the weight per unit area (coating of skin lateral plate 32 and non-skin lateral plate 33 Weight the difference between difference and skin lateral plate 42 and the coating weight of non-skin lateral plate 43 between) is 5g/m²Below.Cause This, forms substantially uniform fold, therefore provide good skin texture and also change in the skin side of diaper 1 and non-skin side Kind aesthetics.Skin lateral plate 32 and non-skin lateral plate 33 and skin lateral plate 42 and non-skin lateral plate 43 have respectively in the plan view There is identical outer shape.Note that polypropylene fibre can be homopolymer, or it can be the copolymer with ethylene copolymer.Separately Outside, to spun-bonded fibre, there is no limit can use and be obtained by spun-bonded non-woven fabrics, melt spraying non-woven fabrics and spun-bonded non-woven fabrics are laminated So-called SMS non-woven fabrics.

Scalable non-woven fabrics 38 and 48 includes the polyurethane based elastomers as flexible thermoplastic elastomer fiber And as the polyolefin resin polypropylene (PP) with stiff thermoplastic resin fibre, and scalable non-woven fabrics 38 It is the non-woven fabrics of the appropriate stretch processing stretched by such as gear with 48.It is attributed to the stretch processing, scalable non-woven fabrics 38 With 48 in above-below direction in transverse direction have retractility.Note that stretch processing can be carried out in directions that are orthogonal to one another, or can Only to carry out stretch processing in a predetermined direction.In the case where only carrying out stretch processing in a predetermined direction, retractility will be Show on predetermined direction, but be not necessarily the case where all fibres all arrange in a predetermined direction, therefore retractility also exists Show on the direction orthogonal with predetermined direction.

Figure 10 is the figure in the section for schematically showing scalable non-woven fabrics 38 (48).In scalable non-woven fabrics 38 (48) In, it is attributed to gear stretch processing, part a and part b are alternately arranged along lateral.Since there is protrusion and recessed using surface The gear in portion carries out stretch processing, so part a as shown in Figure 10 corresponds to the protrusion of gear and stretched by the protrusion of gear And there is lower fibre density, part b corresponds to the recess portion of gear and fibre density is higher than part a.It is attributed to use The scalable non-woven fabrics 38 (48), diaper 1 is relatively soft and has improved skin texture.

Scalable non-woven fabrics 38 has the outer shape roughly the same with skin lateral plate 32 and non-skin lateral plate 33, scalable Non-woven fabrics 48 has the outer shape (Fig. 2) roughly the same with skin lateral plate 42 and non-skin lateral plate 43.At this point, in scalable nothing In woven fabric 38 and 48, relative to upper and lower directions, the fibre density in the upper end of scalable non-woven fabrics 38 and 48 (that is exists The fibre density in part near the upper end 25 of diaper 1) it is close higher than the fiber in the central portion of waist portion 24 (24a, 24b) Degree.Therefore, when wearer puts on diaper 1, when being kept and pulling up in the upper end 25 with higher fiber density The danger of the damage such as torn can be reduced.On the other hand, the fiber in the lower end side region of scalable non-woven fabrics 38 and 48 is close Degree is set low, therefore can improve the gas permeability in the waist portion 24 for being intended to absorb moisture.

The upper end 25 of preceding body piece 30 and rear body piece 40 is not provided with scalable non-woven fabrics 38 and 48, and is provided with Elastica 30a and 40a.Predecessor piece elastica 30a and rear body piece elastica 40a is the linear telescoping member along transversal stretching, And assign retractility to the waist opening portion 1a of diaper 1.Predecessor piece elastica 30a is arranged along predecessor's piece upper edge 35 The other end is extended to from an end of predecessor's on piece ora terminalis 35, rear body piece elastica 40a is arranged along rear body on piece Ora terminalis 45 extends to the other end from the one end of rear body piece upper edge 45.Therefore, linear elastica 30a and 40a can be prevented The landing etc. downwards of diaper 1.On the other hand, the region of 25 lower section of upper end of preceding body piece 30 and rear body piece 40 is provided with and can stretch Contracting non-woven fabrics 38 and 48, therefore the whole surface of scalable non-woven fabrics 38 and 48 is allowed to be bonded the abdomen of wearer light and slowly.

As shown in figure 3, at the upper end of preceding body piece 30, non-skin lateral plate 33 with predecessor's on piece ora terminalis 35 be starting point to It turns back below skin side, to improve skin texture and to improve durability.At this point, in the region of turning back of non-skin lateral plate 33 Bottom part in, non-skin lateral plate 33, skin lateral plate 32, scalable non-woven fabrics 38 and non-skin lateral plate 33 from skin side according to Secondary overlapping.On the other hand, in the upper end of non-skin lateral plate 33 (that is in the upper end of diaper 1 25), non-skin A part for lateral plate 33 and another part overlapping of non-skin lateral plate 33, and multiple predecessor's piece elastica 30a are set to non-skin Between the two parts of skin lateral plate 33.

Similarly, in the upper end of rear body piece 40, after non-skin lateral plate 43 body piece upper edge 45 for starting point downwards It turns back.At this point, in the bottom part in the region of turning back of non-skin lateral plate 43, non-skin lateral plate 43, can be stretched skin lateral plate 42 Contracting non-woven fabrics 48 and non-skin lateral plate 43 are overlapped successively from skin side.On the other hand, in the upper end of non-skin lateral plate 43 ( That is in the upper end of diaper 1 25), a part for non-skin lateral plate 43 and another part overlapping of non-skin lateral plate 43, And body piece elastica 40a is set between the two parts of non-skin lateral plate 43 after multiple.

At this point, since non-skin lateral plate 33 and 43 is turned back, so the upper end 33a and 43a of non-skin lateral plate 33 and 43 is set It is set to the upper end 32a and 42a higher than skin lateral plate 32 and 42.Predecessor piece elastica 30a is set to the upper end of non-skin lateral plate 33 Between 33a and the upper end 32a of skin lateral plate 32, rear body piece elastica 40a is set to the upper end 43a and skin side of skin lateral plate 43 Between the upper end 42a of piece 42.Therefore, skin lateral plate 32 and 42 is not provided in elastica 30a and 40a and non-skin lateral plate 33 and 43 Between, thus the contractility of elastica 30a and 40a are easy to apply to wearer, can improve stickiness when diaper is worn.

Skin lateral plate 32, scalable non-woven fabrics 38 and non-skin lateral plate 33 are engaged by multiple weld portions 39, therefore is formed Preceding body piece 30.Similarly, skin lateral plate 42, scalable non-woven fabrics 48 and non-skin lateral plate are engaged by multiple weld portions 49 43, therefore body piece 40 after formation.It will illustrate the details of weld portion 39 and 49 later.

In addition, being provided with leg rivel 26 in preceding body piece 30 and rear body piece 40.Leg rivel 26 includes along predecessor Under piece ora terminalis 36 continuously extends to the front side leg rivel 37 of the other end from the one end of predecessor's under piece ora terminalis 36, along rear body Under piece ora terminalis 46 continuously extends to the rear body piece 40 and crotch panel 50 of the other end from the one end of rear body under piece ora terminalis 46 Crotch leg rivel 54.Leg rivel 37,47 and 54 cooperates assigns retractility to the leg opening part 1b of diaper 1.In front side leg In rivel 37, by multiple elasticas for being configured between skin lateral plate 32 and non-skin lateral plate 33 to skin lateral plate 32 and Fei Pi Skin lateral plate 33 assigns retractility, and in rear side leg rivel 47, by being configured at skin lateral plate 42 and non-skin lateral plate 43 Between multiple elasticas assign retractility to skin lateral plate 42 and non-skin lateral plate 43.

Crotch panel 50 is made of two non-woven fabrics, and has general hourglass shape in the plan view, and crotch panel 50 is included in length Spend aduncate bending section 52 in the horizontal in the substantial middle part on direction.In bending section 52, the width of crotch panel 50 Most narrow (most narrow portion 53).On the other hand, at the both ends on the length direction of crotch panel 50, bending section 52 and crotch panel are not set 50 width is most wide (widest part).Note that as shown in figure 5, preceding body piece 30 and crotch panel 50 engage at front side joint portion 62, and And rear body piece 40 and crotch panel 50 engage at rear side joint portion 66.

It is configured with elastica between two non-woven fabrics of crotch panel 50, therefore forms crotch leg rivel 54.Crotch leg rivel 54 It is arranged along bending section 52 to be extended continuously, and also extends beyond most wide on bending section 52 to the length direction of crotch panel 50 Portion.By the way that crotch leg rivel 54 is arranged along bending section 52, it can further improve the wearing at femoribus internus of diaper 1 Sense.

Crotch leg rivel 54 is not engaged to absorbent main body 10, and in the up-down direction, front side joint portion 62 relative to End (lower end 31b) positioned at 50 side of crotch panel of predecessor's piece lateral margin 31 is located at 50 side of crotch panel.Therefore, diaper 1 can be improved in thigh Adherent feeling inside and abdomen.

Bending section 52 is Chong Die with preceding body piece 30, therefore can crotch panel 50 be smoothly connected to predecessor's piece via bending section 52 Portion 30.

In the lap Chong Die with crotch panel 50 of preceding body piece 30, other than front side joint portion 62, in lap Transverse direction on both ends in be provided with disengaged portion 64, therefore can further improve the wearing at femoribus internus of diaper 1 With sense.In addition, crotch leg rivel 54 is Chong Die with disengaged portion 64, therefore the moving area of crotch leg rivel 54 can be reduced Quantity.

In transverse ends part in the transverse direction of absorbent main body 10, in vertical end in the up-down direction, absorb Property main body 10 is joined to outer load 20, and in transverse ends part, it is Chong Die with front side joint portion 62 in the up-down direction In vertical non-end, absorbent main body 10 is not engaged to outer-skin sheet 20.Therefore, in transverse ends part, in vertical end (that is in the four corners of absorbent main body 10), absorbent main body 10 can be fixed firmly to outer-skin sheet 20.

The most narrow portion 53 of crotch panel 50 is less than most narrow portion 53 and rear side joint portion 66 with the separation distance D1 at front side joint portion 62 Separation distance D2.Therefore, the coarse of rear side can be mitigated, while also stopping the fold in the joint portion 62 of front side in advance.

In the lateral center portion of absorbent main body 10, absorbent main body 10 is not including crotch panel with rear body piece 40 The outer-skin sheet 20 that the part of the end overlapping of 50 sides is joined to along upper and lower directions.Therefore, absorbability master can be firmly fixed The part to be fixed of the lateral center portion of body 10, and also leave the non-of absorbent main body 10 and to be fixed be not fixed part (B)。

===weld portion 39,49===

Fig. 7 is the plane for the position for showing distributed areas X and body junction area Y in the diaper 1 in unfolded state Figure.Fig. 8 is the figure for showing the part A in Fig. 1.Fig. 9 A are the sectional views along the D-D interceptions in Fig. 8.Fig. 9 B are along in Fig. 8 E-E interception sectional view.

Before distributed areas X is set to body piece 30 do not include body junction area Y and upper end 25 region and after The region for not including body junction area Y and upper end 25 of body piece 40.In the figure 7, distributed areas X be by with by attached drawing mark Remember the region that the identical oblique line of oblique line gradient that " X " is indicated indicates, and is that weld portion 39a (39) and weld portion is distributed with The region of 49a (49).Note that in the present embodiment, in preceding body piece 30 and rear body piece 40, weld portion 39a and 49a are also It is set to the lateral outer side of end engaging zones Z and end engaging zones Z.Therefore, weld portion 39 and 49 is set to than predecessor piece Portion 30 and the wide range of rear body piece 40, thus diaper 1 can be endowed the feeling of appearance uniform, and diaper 1 can be improved Aesthetics.

In the figure 7, body junction area Y is by oblique line table identical with the oblique line gradient indicated by reference numeral " Y " The region shown is the region Chong Die with absorbent main body 10 of preceding body piece 30, be rear body piece 40 with absorbent main body 10 The region of overlapping, and be the region that weld portion 39b is distributed with.In the present embodiment, it is formed in the weld portion of distributed areas X 39 be weld portion 39a and 49a, and the weld portion 39 and 49 for being formed in body junction area Y is weld portion 39b and 49b.

Multiple weld portion 39a in preceding body piece 30 are the black color parts in Fig. 6 etc., are skin lateral plates 32, scalable Non-woven fabrics 38 and non-skin lateral plate 33 by applying ultrasonic activation and pressure ultrasonic rolling land engagement and skin lateral plate 32, can Flexible non-woven fabrics 38 and non-skin lateral plate 33 is fused together and cured part.Weld portion 39a (49a), which is shaped as, for example to be had There is in approximate same size and equally distributed circle.

In the following description, four weld portion 39a in the region F surrounded by the double dot dash line in Fig. 8 are the first weldings Portion 39a1, the second weld portion 39a2, third weld portion 39a3 and the 4th weld portion 39a4.As shown in figure 8, the region is provided with One weld portion 39a1, the second weld portion 39a2 adjacent with the first weld portion 39a1 below the first weld portion 39a1, upper and lower It is set on direction between the first weld portion 39a1 and the second weld portion 39a2 and from the side (left side) and first in transverse direction Adjacent weld portion 39a1 third weld portion 39a3 and it is set to the first weld portion 39a1 and the second welding in the up-down direction Between portion 39a2 and from the fourth weld portion 39a4 adjacent with the first weld portion 39a1 of the other side (right side) in transverse direction.First Weld portion 39a1, the second weld portion 39a2, third weld portion 39a3 and the 4th weld portion 39a4 are in a manner of forming diamond shape vertex Configuration.

At this point, the straight line Sv of connection the first weld portion 39a1 and the second weld portion 39a2 extends in the up-down direction, connect The straight line Sh of third weld portion 39a3 and the 4th weld portion 39a4 are along being laterally extended.Make the intersection point between straight line Sv and straight line Sh It is d from the lower end of the first weld portion 39a1 to the distance of intersection point N, from the upper end of the second weld portion 39a2 to intersection point N for intersection point N Distance be d, from the lower end of the first weld portion 39a1 to the distance of the upper end of the second weld portion 39a2 be 2d.Similarly, from The distance of the right end of three weld portion 39a3 to intersection point N are e, are e from distance of the left end of the 4th weld portion 39a4 to intersection point N, from The distance of the right end of third weld portion 39a3 to the left end of the 4th weld portion 39a4 is 2e.

The distance (that is, distance 2e) of left end from the right end of third weld portion 39a3 to the 4th weld portion 39a4 is preferably 1.5mm to 5.0mm.In addition, from the first weld portion 39a1 to third weld portion 39a3 the distance of (the 4th weld portion 39a4) and From the second weld portion 39a2 to third weld portion 39a3, the distance of (the 4th weld portion 39a4) is both preferably 1.0mm to 3.0mm, More preferably 1.5mm to 2.5mm.This is because these apart from it is too short in the case of, scalable non-woven fabrics 38, which does not show, to be stretched Contracting power, there are the risks that fold is inadequately formed, and when these apart from it is long when, it is too big to be formed by fold, is unable to shape At tiny fold, there is the risk that the appearance uniform sense of preceding body piece 30 reduces.

At this point, the distance between the first weld portion 39a1 and the second weld portion 39a2 (2d) are longer than as third weld portion E (the 2d of the half of the distance between 39a3 and the 4th weld portion 39a4>And third weld portion 39a3 and the 4th weld portion e), The distance between 39a4 (2e) is longer than the d of the half as the distance between the first weld portion 39a1 and the second weld portion 39a2 (2e>d)。

First weld portion 39a1, the second weld portion 39a2, third weld portion 39a3 and the 4th weld portion 39a4 may be contained within At multiple positions, the first weld portion 39a1 and the second weld portion 39a2 are configured with uniform intervals in the up-down direction, third welding Portion 39a3 and the 4th weld portion 39a4 are configured with uniform intervals in the horizontal.In other words, the first weld portion 39a1, the second weld portion 39a2, third weld portion 39a3 and the 4th weld portion 39a4 are configured in entire distributed areas X with uniform intervals.Although note that making For four weld portion 39a in the F of region illustrate the first weld portion 39a1, the second weld portion 39a2, third weld portion 39a3 and 4th weld portion 39a4, but arbitrary weld portion 39a can be set to the first weld portion 39a1, the second weld portion 39a2, the Three weld portion 39a3 and the 4th weld portion 39a4.For example, the weld portion 39a being located in the F of region below the second weld portion 39a2 can To be the first weld portion 39a1.

In addition, the first weld portion 39a1, the second weld portion 39a2, third weld portion 39a3 and the 4th weld portion 39a4 are all provided with It is placed at multiple positions, thus is also equipped with multiple intersection point N.At this point, the first weld portion 39a1 and the second weld portion 39a2 are upper Lower section is arranged with uniform intervals upwards, and third weld portion 39a3 and the 4th weld portion 39a4 are arranged with uniform intervals in the horizontal, Thus intersection point N is also configured in transverse direction with uniform intervals in above-below direction.

As illustrated in figures 9a and 9b, in the X of distributed areas, skin lateral plate 32 is set to skin side, and non-skin lateral plate 33 is arranged In non-skin side, scalable non-woven fabrics 38 is set between skin lateral plate 32 and non-skin lateral plate 33, and these components are molten Welding engages at socket part 39a.It is cu to make the center of weld portion, and the thickness at central cu is less than the total of the thickness of non-weld With, that is to say, that the thickness at central cu is less than skin lateral plate 32, scalable non-woven fabrics 38 and Fei Pi between weld portion 39a The summation of the thickness of skin lateral plate 33.

Scalable non-woven fabrics 38 usually by the way that skin lateral plate 32 and non-skin lateral plate 33 is laminated and extends in the horizontal And carry out the engagement of skin lateral plate 32, scalable non-woven fabrics 38 and non-skin lateral plate 33.For this purpose, as shown in Figure 9 A, due to transverse direction The retractility and fiber softening, scrambling of upper scalable non-woven fabrics 38, the distributed areas X with natural length after welding It bloats in a thickness direction, and skin lateral plate 32 is towards skin lateral bend, non-skin lateral plate 33 towards non-skin lateral bend.It changes Yan Zhi, the thickness of the scalable non-woven fabrics 38 between third weld portion 39a3 and the 4th weld portion 39a4 (between weld portion 39a) More than the thickness of the scalable non-woven fabrics 38 at the central cu of weld portion 39.Scalable non-woven fabrics 38 with larger thickness makes skin Skin lateral plate 32 is further to skin lateral bend, non-skin lateral plate 33 further to non-skin lateral bend.As a result, third weld portion Thickness between 39a3 and the 4th weld portion 39a4 (between weld portion 39a) is larger, forms towards skin side and non-skin side Convex form outstanding, and the thickness at the intersection point N of the centre in the transverse direction between weld portion 39 is in particular maximum.

Because scalable non-woven fabrics 38 also has retractility in the up-down direction, as shown in Figure 9 B, due to upper and lower The retractility and fiber softening, scrambling of upward scalable non-woven fabrics 38, the distributed area with natural length after welding Domain X is bloated in a thickness direction, and skin lateral plate 32 is towards skin lateral bend, non-skin lateral plate 33 towards non-skin lateral bending It is bent.In other words, scalable non-woven fabrics 38 between the first weld portion 39a1 and the second weld portion 39a2 (between weld portion 39a) Thickness is more than the thickness of the scalable non-woven fabrics 38 at the central cu of weld portion 39.Scalable non-woven fabrics 38 with larger thickness Make skin lateral plate 32 further to skin lateral bend, non-skin lateral plate 33 further to non-skin lateral bend.As a result, the first welding Thickness between portion 39a1 and the second weld portion 39a2 (between weld portion 39a) is larger, forms towards skin side and non-skin Side convex form outstanding, and the thickness at the intersection point N of the centre in the upper and lower directions between weld portion 39 is in particular It is maximum.Note that in the case that retractility in the up-down direction is less than retractility in the horizontal, convex form shown in Fig. 9 B Overhang be less than Fig. 9 A shown in convex form overhang.

The gross area (Ra) of the weld portion 39a of per unit area is preferably predetermined value or less.In other words, it is set to distribution The gross area (Ta) of multiple weld portion 39a of region X relative to the distributed areas X in preceding body piece 30 area (Sx) preferably For (Ta/Sx≤predetermined value) below predetermined value.The Ta/Sx is preferably about 2% to 7% (Ta/Sx ≈ 2% to 7%).This is Because when Ta/Sx is more than 7%, there is the risk that the gas permeability of preceding body piece 30 (diaper 1) reduces, and when Ta/Sx is less than When 2%, there are the risks of the engagement separation of skin lateral plate 32, scalable non-woven fabrics 38 and non-skin lateral plate 33.

Next, will illustrate weld portion 39b.Weld portion 39b engagement skins lateral plate 32, scalable non-woven fabrics 38 and non-skin Lateral plate 33, while also inhibiting the flexible of scalable non-woven fabrics 38, and prevent from absorbing caused by by scalable non-woven fabrics 38 Property main body 10 unnecessary contraction caused by excreta leak risk.

Multiple weld portion 39b of preceding body piece 30 are the black color parts in Fig. 6 etc., and are shaken by applying ultrasonic wave The part of dynamic and pressure and ultrasonic rolling land engagement skin lateral plate 32, scalable non-woven fabrics 38 and non-skin lateral plate 33.Weld portion 39b With roughly the same size, and it is formed as a generally rectangular shape, wherein rule is tilted configured with 45 degree and -45 degree are inclined Upright rectangle.Note that the weld portion 49b of rear body piece 40 is not shown for convenience's sake, in Fig. 6.

At this point, being set to the gross area (Tb) of multiple weld portion 39b of body junction area Y relative to preceding body piece 30 The area (Sy) of body junction area Y is preferably less than the gross area phase at the end joint portion 29 for being set to end engaging zones Z For area (Sz) (Tb/Sy of end engaging zones Z<Tz/Sz), and Tb/Sy is preferably 7% to 14%.In other words, often The gross area (Rb) of the weld portion 39b of unit area is less than the gross area (Rz) of the end engaging zones 29 of per unit area.

As described above, end engaging zones Z is necessary to ensure that enough bond strengths, to prevent piece portion of predecessor 30 and rear body piece The separation in portion 40, thus need to form the end joint portion 29 with predetermined area (Rz).It is arranged when in the Y of body junction area When having the weld portion 39b of area (Rz), there are the worries that weld portion 39b will excessively hinder gas permeability.

For this purpose, the end that the gross area (Rb) of the weld portion 39b of per unit area is set to be less than per unit area connects Close the gross area (the Rz) (Rb in region 29<Rz), it is hereby ensured that the bond strength in the engaging zones Z of end and ensure main body Both gas permeabilities in engaging zones Y.

In addition, being set to the gross area (Ta) of multiple weld portion 39a of distributed areas X relative to point in preceding body piece 30 The area (Sx) of cloth region X is less than the gross area (Tb) for the multiple weld portion 39b for being set to body junction area Y relative to predecessor Area (Sy) (Ta/Sx of body junction area Y in piece portion 30<Tb/Sy).In other words, the weld portion 39a of per unit area The gross area (Ra) is less than the gross area (Rb) (Ra of the weld portion 39b of per unit area<Rb).

In the Y of body junction area, it is necessary to ensure that gas permeability, but cause to inhibit to be attributed to scalable non-woven fabrics 38 The contraction in the horizontal of absorbent main body 10, it is necessary to the weld portion 39b with particular area (Rb) is set.Easily such as gone out In the waist portion 24 that the problem of sweat and moisture accumulation influences, gas permeability is extremely important, and when weld portion 39a is set to and main body When engaging zones Y has the distributed areas X of equal area (Rb), there are weld portion 39a will be more than necessarily obstruction gas permeability Worry.

For this purpose, the gross area (Ra) of the weld portion 39a of per unit area is set to be less than the weld portion of per unit area The gross area (Rb) (Ra of 39b<Rb), therefore the contraction of absorbent main body 10 in the horizontal can be prevented, while also assured entire The gas permeability appropriate of diaper 1.

Although the skin lateral plate 32 of preceding body piece 30, scalable non-woven fabrics 38, non-skin lateral plate 33 is explained above and melts Socket part 39a and 39b, but identical feature is also applied for the skin lateral plate 42, scalable non-woven fabrics 48, non-skin of rear body piece 40 Skin lateral plate 43 and weld portion 49a (49) and 49b (49).

The other effects of======

In traditional disposable diaper, (the skin lateral plate and non-of scalable and non-telescoping is engaged using bonding agent Skin lateral plate) to form preceding body piece and rear body piece, thus since the solidification quality of bonding agent is deteriorated.In addition, when having bullet Property power Collapsible strainer when being used as scalable, telescopic direction is only a direction (such as laterally), thus is existed by Collapsible strainer The fold formed in non-telescoping forms the part of quality difference, and there is the load for the feeling rustled especially for film The heart.Fig. 9 C are the sectional views of the part in the waist portion using Collapsible strainer.As shown in Figure 9 C, traditional primary In property diaper, skin lateral plate 92, Collapsible strainer 98 and non-skin lateral plate 93 are set gradually from skin side.The thickness of Collapsible strainer 98 Substantially uniformly, thus between skin lateral plate 92 and Collapsible strainer 98, between non-skin lateral plate 93 and Collapsible strainer 98 shape At gap.Therefore, when diaper when worn with the skin contact of wearer when, for example, as shown in the arrow in Fig. 9 C Point, skin lateral plate 92 or non-skin lateral plate 93 can easily be recessed towards Collapsible strainer 98.

In contrast, in the present embodiment, as shown in fig. 9 a and fig. 9b, the scalable non-woven fabrics 38 between weld portion 39 Fiber bloated in a thickness direction due to blockage effect.The thickness of scalable non-woven fabrics 38 increases between weld portion 39, Even if thus being contacted with skin presence when diaper is worn, scalable non-woven fabrics 38 can also work as a buffer, and can be with Inhibit the easy formation of recess.Therefore, it can feel that diaper 1 is soft when wearing.

In addition, in the present embodiment, it is desirable to scalable non-woven fabrics 38 between weld portion 39 adjacent to each other At least part contact skin lateral plate 32 or non-skin lateral plate 33.This can further improve quality.

In addition, in the present embodiment, retractility is provided using scalable non-woven fabrics rather than Collapsible strainer, thus can be with The feeling of the whole region softness of imparting contact skin, rather than the feeling (inorganic of the inanimate matter as film sensation).In addition, because scalable non-woven fabrics 38 and 48 has stretching in multiple directions (that is, upper and lower directions and transverse direction) Contracting is attributed to the scalable non-woven fabrics 38 and 48 with retractility in a plurality of directions, skin so when diaper is worn Lateral plate 32 and 42 can contact skin from multiple directions, and when putting on and taking off diaper, skin lateral plate 32 and 42 can be It is detached with skin in multiple directions, therefore the smooth feeling of wearer can be assigned.Particularly, in the pants type of such as diaper 1 In the case of disposable diaper, catch skin lateral plate 32 and 42 and non-skin lateral plate 33 and 43 both sides while pull up it is short Pant-type disposable diaper, thus the part of the contact hand by using non-woven fabrics formation diaper 1, may be implemented soft feeling. Particularly, people experiences quality by comparing, and when both sides softness having the same, the soft of diaper 1 may be implemented Soft feeling.

In addition, in skin lateral plate 32 and 42, skin is abutted during wearing at least provided with the part of distributed areas X, Therefore user can be made to experience tender texture.Specifically, as shown in fig. 9 a and fig. 9b, weld portion 39 (49) has due to welding Have a higher fibre density, and skin lateral plate 32 (42), scalable non-woven fabrics 38 (48) and non-skin lateral plate 33 (43) it is total Thickness reduces, but the overall thickness of skin lateral plate 32, scalable non-woven fabrics 38 and non-skin lateral plate 33 is between weld portion 39 It is bigger than in weld portion 39 in region, therefore form the bulging of substantially chevron shape.When diaper is worn, the skin of wearer is first The part bloated with substantially chevron shape is first abutted, therefore tender texture can be provided.

In addition, in waist portion 24, bonding agent is not used in the distributed areas X of multiple weld portions 39 and 49 is distributed with, Therefore it can prevent quality caused by curing due to bonding agent from deteriorating.

In addition, in the present embodiment, multiple weld portions 39 and 49 are configured at distributed areas X with uniform intervals.According to this Construction forms the part bloated with substantially chevron shape, therefore the substantially chevron of skin lateral plate 32 and 42 with substantially uniform state Shape part abuts the skin of user in an uniform manner, can improve the quality that user feels.

In addition, in the present embodiment, in waist portion 24, it does not include main body that distributed areas X is set to uniform intervals The whole region of the upper end 25 of engaging zones Y and diaper 1.Therefore, weld portion 39 and 49 is formed in wider range, thus big It causes mountain shape area to be formed in wider range, and not only improves quality, further improve the aesthetics of diaper 1.

In addition, in the present embodiment, scalable non-woven fabrics 38 and 48 includes polyolefin, therefore can improve skin lateral plate 32 and 42 and non-skin lateral plate 33 and 43 weldability.Particularly, in the present embodiment, skin lateral plate 32 and 42 and non- Skin lateral plate 33 and 43 is to gather being non-woven fabrics made of the PP fibers of polyolefin-based fibre, and because of polyolefin resin Propylene (PP) is included in scalable non-woven fabrics, so realizing stronger welding by being melted during welding.In addition, because Scalable non-woven fabrics 38 and 48 includes polyurethane, it is possible to be assigned to scalable non-woven fabrics flexible in upper and lower directions and transverse direction Property.

In addition, in the present embodiment, scalable non-woven fabrics 38 between weld portion 39 adjacent to each other and 49 and 48 Thickness is more than the thickness of the scalable non-woven fabrics 38 and 48 in the center portion cu of weld portion 39 and 49.Such as Fig. 9 A and Fig. 9 B institutes Show, the thickness of scalable non-woven fabrics 38 is smaller in weld portion 39, and special at the position of the middle position cu of weld portion 39 It is not small.Stretch processing of the scalable non-woven fabrics 38 by progress such as gear stretchings, and under natural length state, scalable nothing Woven fabric 38 has the substantially mountain shape bloated in a thickness direction.However, in weld portion 39, the thickness of weld portion 39 by It is smaller by being fixed in a thickness direction by welding.As a result, scalable non-woven fabrics 38 is due to contractility and in weld portion 39 Between bloat, therefore have the thickness bigger than in weld portion 39.Particularly, at intersection point N, thickness is intended to maximum.In addition, It is attributed to the bulging of scalable non-woven fabrics 38, skin lateral plate 32 and non-skin lateral plate 33 can be made more curved in the up-down direction It is bent.Therefore, when diaper is worn, the convex camber between weld portion 39 contacts skin before weld portion 39, therefore can be with Further improve quality.

In addition, in the present embodiment, by a pair of of weld portion 39 and 49 adjacent to each other in the up-down direction and in cross Protrusion is set in the region that a pair of of weld portion 39 and 49 adjacent to each other is surrounded upwards, and protrusion is set to skin side and Fei Pi Skin side.In other words, exist between adjacent the first weld portion 39a1 and the second weld portion 39a2 in the up-down direction as protruding Substantially mountain shape (Fig. 9 A) in the protrusion of skin side and non-skin side, and third weld portion adjacent in the horizontal There is the substantially mountain shape as the protrusion for protruding from skin side and non-skin side between 39a3 and the 4th weld portion 39a4 (Fig. 9 B).In above-below direction intersection point N with the center in transverse direction, and centered on intersection point N and by the first weld portion 39a1, The region that second weld portion 39a2, third weld portion 39a3 and the 4th weld portion 39a4 are surrounded, which is formed, is located at skin side and non-skin The protrusion of side.Therefore, when diaper is worn, protrusion contacts skin before weld portion 39a and 49a, therefore improves quality, And when the diaper is worn, by catch skin lateral plate 32 and 42 and non-skin lateral plate 33 and 43 both sides pull up diaper, because This by improve skin lateral plate 32 and 42 and non-skin lateral plate 33 and both 43 quality, can assign wearer's diaper 1 is Soft impression.

===other embodiment===

Although embodiments of the present invention are explained above, embodiment of above is to be used to help understand the present invention, It is not interpreted the limitation present invention.Modification can carried out to the present invention without departing from the spirit of the invention, improved Deng, and the equivalence of the present invention is also contained in the present invention.For example, modification such as below can be carried out.

In embodiment of above, weld portion 39 and 49 and end joint portion 29 made by ultrasonic bonding it is multiple Piece etc. is engaged and is formed, and but not limited to this.The engagement can be another by being heated and pressurizeed for thermal welding or melting etc. One means carry out.

In embodiment of above, the telescoping member that is configured at upper end 25 is multiple elastica 30a and 40a, and nothing Woven fabric 48 and 38 is not provided in wherein, and but not limited to this.The elastica for being configured at upper end 25 can be non-woven fabrics 38 and 49 And multiple elastica 30a and 40a, or can only be non-woven fabrics 38 and 48.It should be noted that by being set in upper end 25 Set elastica 30a and 40a, the risk that diaper 1 can be inhibited to slide downwards.

In embodiment of above, non-skin lateral plate 33 and 43 is turned back to skin side, the upper end of non-skin lateral plate 33 and 43 It is set higher than the upper end of skin lateral plate 32 and 42, but non-skin lateral plate 33 and 43 not necessarily needs to be turned back.In addition, The upper end of skin lateral plate 32 and 42 can be set to at non-skin lateral plate 33 and 43 identical positions.In addition, skin lateral plate 32 It can turn back to non-skin side with 42.It should be noted that by such as the skin and elastica in wearer in the embodiment One piece (non-skin lateral plate 33,43) is only set between 30a and 40a, and the contractility of elastica 30a and 40a are easier to be transmitted to The abdomen of wearer can further suppress the risk that diaper 1 slides downwards.

In embodiment of above, the gross area (Ra) of the weld portion 39a of per unit area is less than the molten of per unit area The gross area (Rb) of socket part 39b, and the gross area (Rb) of the weld portion 39b of per unit area is less than the end of per unit area The gross area (Rz) (Ra of engaging zones 29<Rb<Rz), but not limited to this.Can per unit area be set with arbitrary proportion The end of the gross area (Ra) of weld portion 39a, the gross area (Rb) of the weld portion 39b of per unit area and per unit area connects Close the gross area (Rz) in region 29.

In embodiment of above, weld portion 39 and 49 is configured with uniform intervals, and but not limited to this.Weld portion 39 and 49 It can be configured by unevenly spaced configuration or in a manner of showing certain pattern.

Do not include that upper end 25 and main body engage in preceding body piece 30 and rear body piece 40 in embodiment of above The region of region Y is distributed areas X, and but not limited to this.Distributed areas X can be set to preceding body piece 30 and rear body piece 40 A part.In other words, as long as distributed areas X is set to the part in the waist portion 24 of preceding body piece 30 and rear body piece 40, Region other than the X of distributed areas can not form the region of weld portion 39 and 49 or can use bonding agent Region.In the case that even if X is set to a part for preceding body piece 30 and rear body piece 40 in distributed areas, weld portion 39 and 49 Between region also there is substantially chevron shape.For this purpose, when diaper is worn, substantially chevron shape contacts skin, and can be Wearer provides tender texture.Note that the transverse direction relative to preceding body piece 30 and rear body piece 40, it is preferred that by distributed area Domain X is set to the region from positioned at the end of one end to positioned at the end of another side.According to the construction, to the outer of diaper 1 It sees and assigns uniformity, and form tiny fold, therefore the shape and quality of cloth may be implemented, and urine can be improved The aesthetics of cloth 1.

In embodiment of above, scalable non-woven fabrics 38 and 48 due to have by surface the gear of protrusion and recess portion into Row stretch processing and show contractility, but not limited to this.Can not have the drum of protrusion and recess portion by using such as surface Contractility is provided etc. being stretched.Tooth is carried out by the gear of protrusion and recess portion it should be noted that having by using surface Stretch processing is taken turns, the region with different fibre densities as shown in Figure 10 can be formed, therefore can further improve quality.

In embodiment of above, skin lateral plate 32 and 42 and non-skin lateral plate 33 and 43 by the spunbond as PP fibers Fiber is made, and but not limited to this.SMS non-woven fabrics, Breathable nonwoven can be used, by polyethylene (PE), polyester, polyamide etc. The spun-bonded non-woven fabrics etc. that manufactured fiber is constituted.Fibre structure is not limited to the Single Fiber made of single thermoplastic resin, and And can there is the composite fibre (wherein, core material is PP, sheath material PE) of core sheath structure or with other structures Fiber.Note that piece is preferably the non-woven fabrics made of monofilament (mono-filaments), and most preferably, it is used for skin Skin lateral plate 32 and 42, non-skin lateral plate 33 and 43 and the thermoplastic resin fibre of scalable non-woven fabrics 38 and 48 be identical fibre Dimension.It is more securely bonded this is because being realized the melting of the fiber made of identical component and solidification.

In embodiment of above, in scalable non-woven fabrics 38 and 48, polyurethane based elastomers be used to have elasticity Thermoplastic elastomer fiber, PP is used as having stiff thermoplastic resin fibre, and but not limited to this.It is flexible Thermoplastic elastomer fiber can be polystyrene based elastomeric, polyolefin-based elastomer, polyamide-based elastomer etc., and have Stiff thermoplastic resin fibre can be the fibre for the polyolefin resin for including such as PE or ethylene-alpha-olefin copolymer Dimension.

In embodiment of above, fibre density is higher in the upper end of scalable non-woven fabrics 38 and 48, but unlimited In this.The fibre density of scalable non-woven fabrics 38 and 48 can be uniform in whole region.However, by scalable non-woven fabrics 38 With higher fibre density is set in 48 upper end, the wind that diaper 1 is damaged when being put on and being taken off can be further suppressed Danger.

Although the diaper 1 according to embodiment of above is worn for being grown up, but not limited to this, and the diaper can be with Children for newborn, baby or child etc. wear.

Reference sign

1 diaper, 1a waist opening portion, 1b leg opening parts,

10 absorbent main bodies, 11 absorbers,

12 positive dough sheets, 14 back sheets, 20 outer-skin sheets,

24 waist portions, waist portion on front side of 24a, waist portion on rear side of 24b,

25 upper ends, 26 leg rivels,

29 ends joint portion,

Body piece before 30,30a predecessor's piece elastica,

31 predecessor's piece lateral margins, the upper ends 31a, the lower ends 31b,

32 skin lateral plates, the upper ends 32a,

33 non-skin lateral plates, the upper ends 33a,

34 predecessor's piece crotch side regions,

35 predecessor's piece upper edges, 36 predecessor's under piece ora terminalis,

37 front side leg rivels,

38 scalable non-woven fabrics,

39 weld portions, 39a weld portions, 39b weld portions,

Body piece elastica after body piece, 40a after 40,

Body piece lateral margin after 41, the upper ends 41a, the lower ends 41b,

42 skin lateral plates, the upper ends 42a,

43 non-skin lateral plates, the upper ends 43a,

Body under piece ora terminalis behind body piece upper edge, 46 behind body piece crotch side region, 45 after 44,

Body under piece ora terminalis after body under piece ora terminalis, 46b second after 46a first,

Body under piece ora terminalis after 46c thirds,

47 rear side leg rivels,

48 scalable non-woven fabrics,

49 weld portions, 49a weld portions, 49b weld portions,

50 crotch panel, 52 bending sections, 53 most narrow portions,

54 crotch leg rivels,

62 front sides joint portion, 64 disengaged portions, 66 rear side joint portions,

70 main body joint portions,

1 middle position of CL diapers, Sv, Sh straight line,

The distributed areas X,

The body junction areas Y (absorbent main body engaging zones, another distributed areas),

The ends Z engaging zones

Claims

1. a kind of disposable diaper, with upper and lower directions, the disposable diaper includes：

Skin lateral plate, is arranged in skin side；

Non-skin lateral plate is arranged in non-skin side；

Scalable non-woven fabrics is arranged between the skin lateral plate and the non-skin lateral plate；And

Multiple weld portions, are arranged at the position at least than upper end on the lower in waist portion, and the multiple weld portion makes The skin lateral plate, the non-skin lateral plate and the scalable non-woven fabrics engagement,

Bonding agent is not present in the distributed areas that the multiple weld portion is distributed in the waist portion,

At least part of the distributed areas of the skin lateral plate contacts skin during wearing the disposable diaper.

2. disposable diaper according to claim 1, which is characterized in that

The upper end does not include multiple elasticas including the scalable non-woven fabrics.

3. disposable diaper according to claim 2, which is characterized in that

The non-skin lateral plate is turned back downwards from upper end to skin lateral plate side,

The upper end of the non-skin lateral plate is arranged to more against the top than the upper end of the skin lateral plate, and

The multiple elastica is configured at the upper end of the non-skin lateral plate and the skin lateral plate in the upper and lower directions Between upper end.

4. disposable diaper according to any one of claim 1 to 3, which is characterized in that

The disposable diaper includes the transverse direction intersected with the upper and lower directions,

The disposable diaper includes absorbent main body, preceding body piece and rear body piece,

The disposable diaper includes the multiple end joint portions for making the preceding body piece and the rear body piece engagement,

The disposable diaper is provided with end engaging zones, and the multiple end, which is distributed with, in the end engaging zones connects Conjunction portion,

The disposable diaper is provided with absorbent main body engaging zones, is absorbed described in the absorbent main body engaging zones Property the non-skin side of main body, the skin lateral plate, the scalable non-woven fabrics and non-skin lateral plate engagement,

Positioned at the skin lateral plate, the scalable non-woven fabrics and the non-skin lateral plate of the absorbent main body engaging zones Another distributed areas are provided with, the multiple weld portion is distributed in another distributed areas,

The gross area of the multiple weld portion of the per unit area of another distributed areas is less than the end engaging zones Per unit area the end joint portion the gross area.

5. disposable diaper according to any one of claim 1 to 4, which is characterized in that

The disposable diaper includes absorbent main body,

Positioned at the skin lateral plate, the scalable non-woven fabrics and the non-skin lateral plate of the absorbent main body engaging zones Another distributed areas are provided with, the multiple weld portion is distributed in another distributed areas, and

The gross area of the multiple weld portion of per unit area in the distributed areas is less than in another distributed area The gross area of the multiple weld portion of per unit area in domain.

6. disposable diaper according to any one of claim 1 to 5, which is characterized in that

The distributed areas configure the multiple weld portion with uniform intervals.

7. disposable diaper according to claim 6, which is characterized in that

The waist portion do not include the upper end and another distributed areas region in whole region between uniformly Every the multiple weld portion of setting.

8. disposable diaper according to any one of claim 1 to 7, which is characterized in that

The scalable non-woven fabrics contains polyolefin and polyurethane.

9. disposable diaper according to any one of claim 1 to 8, which is characterized in that

Thickness of the scalable non-woven fabrics between the weld portion adjacent to each other is more than the scalable non-woven fabrics each The thickness of the middle position of the weld portion.

10. disposable diaper according to claim 9, which is characterized in that

At least part of the scalable non-woven fabrics between the weld portion adjacent to each other contacts the skin lateral plate Or the non-skin lateral plate.

11. disposable diaper according to any one of claim 1 to 10, which is characterized in that

By a pair of weld portion adjacent to each other and a pair adjacent to each other in the cross direction in the upper and lower directions The region that the weld portion is surrounded includes protrusion, and

The protrusion is set to skin side and non-skin side.

12. disposable diaper according to any one of claim 1 to 11, which is characterized in that

The scalable non-woven fabrics is with first area and with the high fibre density of the fibre density than the first area Second area, and

13. disposable diaper according to any one of claim 1 to 12, which is characterized in that

In the upper and lower directions,

The fibre density of the scalable non-woven fabrics in the upper end of the scalable non-woven fabrics is more than in the waist portion Central portion in the scalable non-woven fabrics fibre density.

14. disposable diaper according to any one of claim 1 to 13, which is characterized in that

The disposable diaper includes：

Outer-skin sheet,

Its with preceding body piece, rear body piece and be arranged in the preceding body piece and it is described after crotch between body piece,

Wherein predecessor's piece portion is engaged with the crotch, and the rear body piece is engaged with the crotch；And

Absorbent main body is arranged to continuously extend to the rear body piece, the absorbent main body from the preceding body piece Excreta is absorbed,

Predecessor's piece lateral margin in the transverse direction of the preceding body piece and the rear body piece side in the transverse direction of the rear body piece Edge engages,

The crotch is provided with crotch leg rivel, and the crotch leg rivel is not engaged to the absorbent main body, and

The joint portion of the preceding body piece and the crotch is arranged on the longitudinal direction as the upper and lower directions than before described The crotch side is leaned at the end of the crotch side of body piece lateral margin.