CN104507435A

CN104507435A - Disposable diaper

Info

Publication number: CN104507435A
Application number: CN201480001886.XA
Authority: CN
Inventors: 矶贝友美; 三宅真纪
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2014-07-25
Filing date: 2014-11-12
Publication date: 2015-04-08
Anticipated expiration: 2034-11-12
Also published as: MY157383A; TWI517841B; KR101560996B1; WO2015046631A1; SG11201408640RA; JP2016029977A; JP5740520B1; BR112016029569A2; SA115360202B1; AU2014280930B1; KR20150063965A; TW201536262A; PH12016502364B1; PH12016502364A1; CN104507435B

Abstract

Provided is an unfolding-type disposable diaper which has a mutually intersecting length direction and width direction, and in which a first waist section, a crotch section, and a second waist section are aligned from one side in the length direction. The disposable diaper has an absorbent body core and a pair of fastening tapes which extend from the first waist section to the outside on both sides in the width direction. The second waist section has fastening tape engagement ends at the position in the length direction at which the crotch-section-side end of the fastening tapes in the length direction is located when both ends of the disposable diaper in the length direction are aligned. The absorbent body core has, on both ends in the width direction, at least a pair of cutouts. In the length direction, among the region between a product center, which is the center of the disposable diaper, and engagement ends, a section of the absorbent body core where the width thereof is narrowest among the sections of the absorbent body core sandwiched between the pair of cutouts is positioned in a region between the center and the engagement ends of said region.

Description

Disposable diaper

Technical field

The present invention relates to flat type disposable diaper.

Background technology

Traditionally, flat type disposable diaper has the absorber between liquid-permeable sheet and opaque liquid sheet, and is joined to the waist portion in the veutro portion covering wearer by a pair fixing band extended outside width two in the waist portion from the drosal part covering wearer and be fixed to wearer.In addition, the flat shape proposing a kind of absorber is the end bending projectedly and disposable diaper making the center of the width of absorber on the length direction of disposable diaper the narrowest inside width on the width of hourglass shape, i.e. absorber.(such as seeing patent documentation 1).

Prior art document

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2002-253608 publication

Summary of the invention

The problem that invention will solve

The absorber illustrated in above-mentioned patent documentation 1 is relatively large and be easily in the root of the lower limb of the baby of extended state recumbency along lower limb.But baby relatively little during birth takes the posture in parent, that is, the mode pull-up that the lower limb of baby contacts with abdominal part with two knees forms M shape, makes the root of lower limb be positioned at abdominal part.Therefore, for the absorber that the center on the length direction of the disposable diaper as in above-mentioned patent documentation 1 is the narrowest, be difficult to the root of the lower limb along posture being the baby of posture in parent.As a result, generation gap with constriction, and makes Excreta to leak to wearer by high rigidity absorber between disposable diaper and wearer.

Make the present invention in view of the above problems, the object of this invention is to provide can easily along the flat type disposable diaper of the health of the baby of the posture adopted in parent.

For the scheme of dealing with problems

In order to overcome the above problems, main aspect of the present invention is a kind of device for the manufacture of disposable diaper, described disposable diaper is deploying type, and there is length direction intersected with each other and width, and from the side of described length direction, be configured with the first waist portion, crotch and the second waist portion, wherein, this disposable diaper have absorber core and from described first waist portion to two of described width outside extend a pair fixing band, when being alignd in the both ends on the described length direction of described disposable diaper, in the position on the described length direction of the end of described crotch side in described second waist portion of leaning on described length direction of described fixing band, there is the abutting end of described fixing band, the described both ends of absorber core on described width have at least one pair of notch part, on described length direction, the narrowest position of width in the position being sandwiched between described a pair notch part of described absorber core is arranged in as lower area: this region be as described in disposable diaper center product center and as described in region between abutting end, region between the center and described abutting end in this region.

According to this description with reference to the description of the drawings, other features of the present invention will become clear.

The effect of invention

According to the present invention, provide a kind of can easily along the flat type disposable diaper of health of baby adopting posture in parent.

Accompanying drawing explanation

Fig. 1 is in expansion and the general view of wearer's skin side of the diaper of elongation state.

Fig. 2 A, Fig. 2 B are the sectional view that the line A-A along Fig. 1, the line B-B of diaper intercepts respectively.

Fig. 3 A is the key diagram that body weight is greater than the baby of 3000 grams, and Fig. 3 B is the key diagram of the posture of SFD, and Fig. 3 C is the key diagram of the posture of SFD.

Fig. 4 is the key diagram of the position that the veutro notch part being set to absorber core is shown.

Fig. 5 is the key diagram of the position that the veutro notch part being set to absorber core is shown.

Fig. 6 is the form of the evaluation test result when position when the veutro notch part that to be shifted along its length is shown.

Fig. 7 A is the approximate three-dimensional map of diaper, and Fig. 7 B is the key diagram of the shape of veutro notch part and the shape of dorsal part notch part.

Fig. 8 is the general view of the diaper of modified example.

Fig. 9 is the general view of the diaper of modified example.

Detailed description of the invention

According to the explanation of this description with reference to schematic figures, at least following item will become clear.

The feature of the disposable diaper of deploying type is, there is length direction intersected with each other and width, and from the side of described length direction, be configured with the first waist portion, crotch and the second waist portion, this disposable diaper have absorber core and from described first waist portion to two of described width outside extend a pair fixing band, when being alignd in the both ends on the described length direction of described disposable diaper, in the position on the described length direction of the end of described crotch side in described second waist portion of leaning on described length direction of described fixing band, there is the abutting end of described fixing band, the described both ends of absorber core on described width have at least one pair of notch part, on described length direction, the narrowest position of width in the position being sandwiched between described a pair notch part of described absorber core is arranged in as lower area: this region be as described in disposable diaper center product center and as described in region between abutting end, region between the center and described abutting end in this region.

According to this disposable diaper, can by the notch part of absorber core (narrow of absorber core), that is, the position that the distortion degree of freedom of absorber core is high is set to the position at the lower limb place of the wearer of the posture taked in parent, makes absorber core easily along the lower limb of wearer.Therefore, relaxed the compressing of absorber core to wearer, made to be difficult to produce gap, therefore, it is possible to control excremental leakage between disposable diaper and wearer.

The feature of described disposable diaper is, described second waist portion have relative to described crotch to a pair flank sheet extended outside two of described width, on described length direction, the narrowest position of the width in the position being sandwiched between described a pair notch part of described absorber core is arranged in as lower area: this region be than as described in product center and as described in flank sheet as described in outermost end on width by as described in length direction as described in side end between region center, by as described in the region of opposite side.

According to this disposable diaper, absorber core can easily along the lower limb being thus lifted to the position near flank sheet of wearer.

The feature of described disposable diaper is, on described length direction, the narrowest position of the width in the position being sandwiched between described a pair notch part of described absorber core is positioned at as lower area: this region be than as described in product center and as described in absorber core by as described in opposite side end between region center, by as described in the region of opposite side.According to this disposable diaper, absorber core can easily along the lower limb being thus lifted to the position of the end of the opposite side near absorber core of wearer.

The feature of described disposable diaper is, using the length on described length direction of described disposable diaper as the first length, and till the end of described opposite side by described length direction from described disposable diaper being played the end of the described opposite side by described length direction at the narrowest position of width in the position being sandwiched between described a pair notch part of described absorber core, length on described length direction is as the second length, described second length is more than 22% relative to the ratio shared by described first length and less than 26%.

According to this disposable diaper, absorber core can easily along the lower limb of the wearer of the posture taked in parent.

The feature of described disposable diaper is, described absorber core has another to notch part than described a pair notch part by the position of described side of described length direction.

According to this disposable diaper, can by the position between two pairs of notch parts of absorber core, namely, the position that the distortion degree of freedom of absorber core is high is set to the crotch of the wearer of the posture taked in parent, and the crotch making it possible to be relaxed by the distortion of absorber core wearer strangles power (fastening force).In addition, each pair of notch part becomes the basic point of folding disposable diaper along its length, and therefore disposable diaper can be formed as the 3D shape of the health along wearer.

The feature of described disposable diaper is, another position the narrowest to the width in the position between notch part described that is sandwiched in of described absorber core is positioned at from described product center to the region to the both sides of described length direction apart from the distance of this product center being the extension position of 10% of the length on described length direction of described disposable diaper.

According to this disposable diaper, other a pair gap portions is in the position of dorsal part of root of lower limb of wearer of taking the posture in parent, and therefore disposable diaper can be formed as the 3D shape of the health of the wearer along the posture taked in parent.

The feature of described disposable diaper is, both ends on described width, be provided with at least can play from described a pair notch part described another in the scope on described length direction till notch part along the retractility component that described length direction is flexible, the shape of described notch part is as follows: the length on described length direction by the position in the outside of described width is longer than the length on described length direction at the position of the inner side by described width, and between the both ends on described length direction of the position on described length direction at top in the end in the outside by described width.

According to this disposable diaper, the gauffer along width is respectively formed between each pair of notch part, and therefore disposable diaper more easily can be formed as the 3D shape of the health of the wearer along the posture taked in parent.

The feature of described disposable diaper is, under the naturalness of described disposable diaper, between described a pair notch part and described another to notch part between be formed with the gauffer extended along described width respectively.

According to this disposable diaper, disposable diaper more easily can be formed as the 3D shape of the health along posture being the wearer of posture in parent, disposable diaper can be confirmed gauffer by naked eyes through SFD aid with it and by disposable diaper through the posture taked in parent baby with it.

The feature of described disposable diaper is, described a pair notch part of described absorber core is with described another is equal by the width of the part of the described opposite side of described length direction to a pair notch part described in the ratio of the width of the part between notch part and described absorber core.

According to this disposable diaper, excremental amount can be guaranteed when making absorber core along when the lower limb of the wearer of the posture taked in parent.

The general structure of===disposable diaper===

The disposable diaper of present embodiment is applicable to the flat type disposable diaper that body weight is 3000 grams or less baby (hereinafter referred to as SFD) in particular.Particularly, diaper is applicable to that body weight is 2500 grams or less LBWI, body weight is the extremely low birth weight baby of 1500 grams or less and body weight is the ULBW baby of 1000 grams or less.

Fig. 1 is in expansion and the general view of wearer's skin side (inner side) of the diaper 1 of elongation state, and Fig. 2 A and Fig. 2 B is respectively along the sectional view that line A-A and the line B-B of Fig. 1 intercept.Diaper 1 comprises length direction, width and the thickness direction of (in the present embodiment for orthogonal) intersected with each other, and the first waist portion 1a, crotch 1b and the second waist portion 1c configure from side at length direction.Usually, diaper 1 is to make the first waist portion 1a cover the drosal part of wearer and the mode in veutro portion that the second waist portion 1c covers wearer is worn, but diaper 1 is worn in the opposite manner.

As shown in Figure 2 A and 2 B, diaper 1 comprises the absorber 4 between liquid permeable top sheet 2 and opaque liquid back side film 3.Absorber 4 extends to the second waist portion 1c along its length from the first waist portion 1a, absorber 4 comprises by absorbing and keeping excremental absorbent material (such as, pulverize pulp and superabsorbent polymer) the absorber core 41 be configured to and the liquid permeability cladding material 42 (such as, cotton paper sheets and spun-bonded non-woven fabrics) covering absorber core 41.In addition, the exterior outer load 5 (such as, non-woven fabrics) forming whole diaper 1 is arranged on the non-skin side of back side film 3.Note, although not shown, in order to put forward the comfortableness that is high waisted, can the retractility component (such as, telescopic sheet component and wire retractility component) that can stretch be set on the width of such as the first waist portion 1a.

As shown in Figure 1, the flat shape of absorber 4 (cladding material 42) is rectangle.Meanwhile, absorber core 41 has all contracted position, both ends on width, and absorber core 41 comprises a pair chevron veutro notch part 43 and a pair chevron dorsal part notch part 44 in contraction position (i.e. a pair large notch part).Veutro notch part 43 and dorsal part notch part 44 are the regions that there is not the absorbent material forming absorber core 41.The same position place that a pair veutro notch part 43 is formed as in the longitudinal direction arranges in the direction of the width, and a pair dorsal part notch part 44 is positioned at the side (dorsal part) of length direction relative to a pair veutro notch part 43 and the same position place be formed as in the longitudinal direction arranges in the direction of the width.In other words, absorber core 41 has shape symmetrical in the direction of the width.Note, veutro notch part 43 and dorsal part notch part 44 degree of depth is in the direction of the width roughly the same in the present embodiment, but the two degree of depth in the direction of the width can be different.

First waist portion 1a comprise to crotch 1b width two outside extend a pair dorsal part flank sheet 13, second waist portion 1c also comprise to crotch 1b width two outside extend a pair veutro flank sheet 14 (flank sheet).Each flank sheet 13,14 is formed with the three-dimensional rivel sheet 21 overlapped in back side film 3 illustrated below.A pair fixing band 10 extends outside two of width from a pair dorsal part flank sheet 13 (the first waist portion 1a).

Fixing band 10 comprises base material 11 and hook tabs 12, and hook tabs 12 is arranged on the skin side surface on the thickness direction of base material 11.When hook tabs 12 folds into the second 1c side, waist portion, hook tabs 12 is relative with the outer load 5 (non-skin side surface) of the second waist portion 1c, thus engages with outer load 5.For this reason, hook tabs 12 (such as, comprising the sheet of the public material of face type fixture) is constructed to be permeable to engage with outer load 5 (such as, non-woven fabrics) and can be separated with outer load 5.Note, structure is not limited to directly hook tabs 12 is engaged to outer load 5, such as, can be set to outer load 5, to join hook tabs 12 to target patch by engaged target sheet (such as, comprising the sheet of generatrix type fixture) by what can engage for hook tabs 12.

When diaper 1 be through wearer with it time, first against wearer along its length after folded diaper 1, by a pair dorsal part flank sheet 13 folded inside to width, then a pair fixing band 10 is joined to the outer load 5 of the second waist portion 1c.Result defines waist peristome and pair of leg encloses peristome.

In addition, the both ends on the width of diaper 1 are provided with the lower limb that can stretch along its length and enclose retractility component 6.Lower limb encloses retractility component 6 and under the state of extending along its length, is fixed on top flat 2 or between three-dimensional rivel sheet 21 and back side film 3.Therefore, diaper 1 in the raw has and shrinks the lower limb that the lower limb enclosed with the lower limb forming applicable wearer at the circumference of leg-openings encloses rivel and enclose retractility component 6.

Note, in the present embodiment, lower limb encloses retractility component 6 and uses wire retractility component (such as, wire polyurethane elastic fibre and wire natural rubber), each end on the width of diaper 1 has two lower limbs configured in the direction of the width and encloses retractility component 6, but the quantity that lower limb encloses retractility component 6 is not limited thereto.In addition, lower limb encloses retractility component 6 and can use telescopic sheet component (the retractility film such as, making form membrane by molten thermoplastic elastomer resin or the flexible nonwoven fabrics be made up of elastic fibre).

In addition, a pair three-dimensional rivel 20 erected in skin side (wearer side) is arranged on the both ends on the width of diaper 1.Each three-dimensional rivel 20 comprises three-dimensional rivel sheet 21 and three-dimensional rivel retractility component 22.As shown in Figure 2 A and 2 B, the outboard end alignment on the width of three-dimensional rivel sheet 21 and outer load 5.But, the end being positioned at the inner side on width of three-dimensional rivel sheet 21 folds towards top flat 2 side (non-skin side), thus becoming between two-layer three-dimensional rivel sheet 21, three-dimensional rivel retractility component 22 (being single wire retractility component in the present embodiment) is fixed under the state of extending along its length.In addition, although not shown, the both ends on the length direction of three-dimensional rivel sheet 21 are connected to top flat 2 by bonding agent etc.The first end that the position in the outside on the width being positioned at the both ends on engaged length direction of three-dimensional rivel sheet 21 is alongst gone up joins top flat 2 to the other end, junction surface (base end part) becomes the basic point of the three-dimensional rivel sheet 21 erected because three-dimensional rivel retractility component 22 shrinks.

In addition, the diaper 1 of present embodiment is for SFD.Therefore expect extend when product is in and eliminates gauffer state time, be particularly in diaper 1 be elongation until formation diaper 1 component (such as, outer load 5) size and the consistent size of monomer members or state close to the size of monomer members time, product size gets following value or smaller value.Expect when product is in the state of extending along its length, the product length of length direction arrives the scope of 330mm 210, particularly, product length body weight being less than to the product for baby of 2500 grams is 310mm, product length body weight being less than to the product for baby of 1500 grams is 270mm, and product length body weight being less than to the product for baby of 1000 grams is 230mm.Expect the scope of waist size (girth of waist opening) at 160 to 295mm, particularly, waist body weight being less than to the product for baby of 2500 grams is of a size of 273.5mm, and waist body weight being less than to the product for baby of 1500 grams is of a size of 220mm.Note, when the state that root side end on the width of the hook tabs 12 comprised with another fixing band 10 when the top on the width at a fixing band 10 aligns is arranged with waist retractility component, waist size is the size of product under the state of having extended in the width direction.

The distinctive problem of===SFD===

Fig. 3 A is the key diagram that body weight is greater than the baby of 3000 grams, and Fig. 3 B and 3C is the key diagram of the posture of the baby with under-weight.

Such as, as shown in Figure 3A, the baby that body weight is greater than 3000 grams often takes lower limb (thigh) 7 to be in the posture of extended configuration.Therefore, the central part (hatched example areas in figure) on the length direction of diaper 1 is clipped between the lower limb 7 (crotch) of baby.Therefore, such as by the end bent on the width of absorber core is become to the inside outstanding, namely widen the width of absorber core at the first waist portion 1a and the second waist portion 1c and make the width at absorber core center in the longitudinal direction be that central part on the length direction of diaper is the narrowest, then absorber core can be made along body weight to be greater than the root of the lower limb 7 of the baby of 3000 grams.

Simultaneously, such as, in order to stably breathe, as shown in Fig. 3 B and Fig. 3 C, body weight is 3000 grams or less SFD posture when often taking baby in parent, in other words, take lower limb 7 to open in M shape and make two knees all contact the posture of abdominal part (hereinafter referred to as location posture).Therefore, be arranged in the region (hatched example areas of figure) of the veutro of the central part on the length direction of diaper 1, in other words, the second waist portion 1c covering abdominal part is sandwiched between lower limb 7.

Due to this situation, be applicable to preceding diaper (that is, make the width of the second waist portion 1c of absorber core wide and make the narrowest diaper of the width at absorber core center in the longitudinal direction) that body weight is greater than the posture of the baby of 3000 grams be through the SFD taking to locate posture with it time absorber core may not along the root of lower limb 7.The part wide at the width at the second 1c place of waist portion of absorber core may be clipped between lower limb 7.Therefore, high rigidity absorber core may oppress the lower limb of wearer, or absorber core may bend, and to produce gap between disposable diaper and wearer, Excreta is easily leaked.In addition, may exist as follows: the part causing rigidity low owing to having notch part of absorber core may arrive the center of the crotch of wearer, that is, arrive the position that crotch strangles the strong position of power, make absorber core possibility easily distortion equally in this case.

In this case, the object of present embodiment is to provide easily along the diaper 1 of health taking the SFD of locating posture.

===absorber core===

Fig. 4 and Fig. 5 is the key diagram of the position that the veutro notch part 43 being arranged at absorber core 41 is shown.Fig. 6 is the form of the evaluation test result illustrated when the position of veutro notch part 43 is shifted along its length.Fig. 7 A is the approximate three-dimensional map of diaper 1, and Fig. 7 B is the key diagram of the shape of veutro notch part 43 and dorsal part notch part 44.

Due to be configured with both ends 1A, 1B on the length direction of diaper 1 and fixing band 10 abreast to the folded inside of width, so fixing band 10 (hook tabs 12) joins to around the position relative with fixing band 10 of the second waist portion 1c usually.Therefore, in the present embodiment, during the both ends 1A on the length direction aliging diaper 1 and 1B, the position (position in Fig. 4) on the length direction at the end 10a (12a) of the central side (crotch 1b) of the length direction of fixing band 10 (hook tabs 12) is set as the abutting end 1c1 of fixing band 10 in the second waist portion 1c.In other words, when length setting on the length direction of the end 1A to the end 10a (12a) of the central side of the length direction of fixing band 10 (hook tabs 12) of the side of the length direction from diaper 1 is L3, the position being length L3 towards the distance of the central side of length direction from the end 1B of the opposite side of the length direction of diaper 1 becomes the abutting end 1c1 of fixing band 10.

When the end 12a of the central side of the end 10a of the central side of the length direction of fixing band 10 and the length direction of hook tabs 12 is inconsistent, the position of the end 12a of the central side of the length direction of hook tabs 12 is set to abutting end 1c1.In addition, the shape of hook tabs 12 (fixing band 10) is not defined as rectangular shape, such as, can be trapezoidal etc.In this case, the end 12a of the central side of the length direction of hook tabs 12 tilts relative to width.Therefore, the position of the outermost part of the length direction of the end 12a of the central side of the length direction of hook tabs 12 is set to abutting end 1c1.

As shown in Figure 4, be positioned at the product center (position b) at center of the length direction as diaper 1 and abutting end 1c1 (position a) between first area A1, the diaper 1 of present embodiment have the center (position c) of the length direction being positioned at first area A1 and abutting end 1c1 (position a) between the top 43a of veutro notch part 43 of second area A2.

In other words, the narrowest position (hatched example areas in Fig. 7 B) of the part clipped by a pair veutro notch part 43 of absorber core 41 is positioned at second area A2.Note, in the present embodiment, align in the longitudinal direction in the position of each top 43a of a pair veutro notch part 43, but they can be shifted.In this case, the position clipped by a pair veutro notch part 43 of absorber core 41 is parts be positioned at as lower area of absorber core 41: in this region, the overlapping ranges on the length direction at both ends 43b, 43c on the scope on the length direction at both ends 43b, 43c (see Fig. 7 B) on the length direction of a veutro notch part 43 and the length direction of another veutro notch part 43.

In the present embodiment the veutro notch part 43 of diaper 1 in the above described manner compared with product center (position b) near the abutting end 1c1 of fixing band 10.Diaper 1 mainly utilizes fixing band 10 (hook tabs 12) to be fixed to wearer.Therefore the root of the lower limb of the wearer locating posture is taked to be promoted to the position of the abutting end 1c1 near fixing band 10.Therefore, by veutro notch part 43 being set to the second area A2 of the abutting end 1c1 near fixing band 10, veutro notch part 43 can be set to the position of the root of the lower limb taking the wearer locating posture.

Absorber core 41 has narrow width around veutro notch part 43, and due to low with other part phase specific rigidities, so very soft.For this reason, by veutro notch part 43 being set to the position of the root of the lower limb taking the wearer locating posture, absorber core 41 can easily along the root of the lower limb of wearer.Therefore, reduce the compressing of the lower limb of absorber core 41 couples of wearers, make wearer easily take to locate posture.In other words, the diaper 1 utilizing fixing band 10 to be fixed to wearer can utilize the distortion of veutro notch part 43 to relax the power (attempting diaper 1 to push to the power of veutro) applied by the lower limb of making great efforts to take to locate posture, thus reduces the compressing to wearer.Therefore, it is possible to improve comfortableness when wearing diaper 1, and the edema of wearer can be suppressed.In addition, owing to unlikely producing gap when inhibit the distortion of diaper 1 between diaper 1 and wearer, so excremental leakage can be suppressed.

But, if the top 43a of veutro notch part 43 is arranged on the opposite side (veutro) of the length direction of the abutting end 1c1 of fixing band 10, then the very possible bonding station at fixing band 10 produces the difference in height (thickness difference) of absorber core 41 due to veutro notch part 43.In this case, the engaging force of fixing band 10 may weaken, or fixing band 10 may due to absorber core 41 distortion and easily peeling off around veutro notch part 43.But the top 43a of veutro notch part 43 is set to the side of the length direction of the abutting end 1c1 of fixing band 10 by the diaper 1 of present embodiment, the position that the rigidity making fixing band 10 to be joined to absorber core 41 when not producing difference in height is high.Therefore, it is possible to engage fixing band 10 securely, this prevent fixing band 10 and peel off due to the distortion of absorber core 41.

In addition, diaper 1 is had the leg-openings portion that the position between veutro flank sheet 14 and dorsal part flank sheet 13 produces when wearing.Therefore, the position not being bonded to fixing band 10 (hook tabs 12) particularly in the second waist portion 1c, take the root of the lower limb of the wearer locating posture easily can touch the end of the side (central side) of the length direction of the outermost side 14a of the width of veutro flank sheet 14 (hereinafter, be called veutro flank sheet end 141 (position d)), thus be promoted to the position near veutro flank sheet end 141.

Therefore, the top 43a of veutro notch part 43 (the narrowest position in the position clipped by a pair notch part of absorber core 41) is set to the region of the opposite side of the length direction at the center (position e) of the 3rd region A3 between product center (position b) and veutro flank sheet end 141 (position d) being positioned at diaper 1 by the diaper 1 of present embodiment, in other words, be set to the center (position e) being arranged in the 3rd region A3 and abutting end 1c1 (position a) between the 4th region A4 and be close to the region of veutro at second area A2.Therefore, absorber core 41 is easily along the lower limb of the wearer of the position be promoted near veutro flank sheet end 141.In addition, the power (making great efforts the power that diaper 1 ventralward is shifted) that the position of the close veutro flank sheet end 141 of diaper 1 (absorber core) can utilize the distortion of veutro notch part 43 to relax to be applied by the lower limb of wearer, can reduce the compressing to wearer thus.

In addition, diaper 1 touches the abdominal part of wearer by the end 41a of the opposite side (veutro) of the length direction by absorber core 41 and is fixed to wearer.Therefore, the position not particularly being bonded to fixing band 10 (hook tabs 12) of the second waist portion 1c makes to take the root of the lower limb of the wearer locating posture to rise to the position of the end 41a of the opposite side of the length direction near absorber core 41.

Therefore, the top 43a of veutro notch part 43 (the narrowest position in the position clipped by a pair notch part of absorber core 41) is set to the region of the opposite side of the length direction at the center (position g) of the 5th region A5 between the end 41a of the opposite side of the length direction of product center (position b) and the absorber core 41 being positioned at diaper 1 by the diaper 1 of present embodiment, in other words, be set to the center (position g) that is arranged in the 5th region A5 and abutting end 1c1 (position a) between the 6th region A6 and be close to the region of veutro at second area A2.Therefore, the lower limb of the wearer of the position of the end 41a of the opposite side of the easier length direction along being thus lifted near absorber core 41 of absorber core 41.In addition, the power (making great efforts the power that diaper 1 ventralward is shifted) applied by the lower limb of wearer can be relaxed by the distortion of veutro notch part 43 in the position of the end 41a of the opposite side of the length direction of the close absorber core 41 of diaper 1 (absorber core), can reduce the compressing to wearer thus.

In addition, as shown in Figure 5, the length (product length) on the length direction of diaper 1 is set to the first length L1, and the length of the top 43a from the end 1B of the opposite side of the length direction of diaper 1 to veutro notch part 43 is set to the second length L2.As shown in Figure 6, change the ratio (L2/L1 × 100) of the second length L2 and the first length L1 in every way, carry out evaluation test.In other words, be through with it the SFD taking to locate posture by using the value shown in Fig. 6 as the diaper 1 of the ratio of the second length L2 and the first length L1 is actual, carry out the test of the comfortableness of diaper 1, and by the comfortableness of visual assessment diaper 1.When comfortableness is good, such as when absorber core 41 does not apply compressing to the lower limb of wearer and absorber core 41 non-distortion around the lower limb of wearer time, or when not producing gap between diaper 1 and wearer, evaluation result is set as " O ", contrary to comfortableness is bad, evaluation result is set as "×".

As a result, as shown in Figure 6, when the ratio of the second length L2 and the first length L1 is 22%, 24% and 26%, evaluation result illustrates good comfortableness.Therefore, in the diaper 1 of present embodiment, the ratio that the top 43a of veutro notch part 43 (the narrowest position in the position clipped by a pair notch part of absorber core 41) is set to the second length L2 and the first length L1 is more than 22% and less than 26% and relative to the position of product center (position b) near the abutting end 1c1 of fixing band 10 in second area A2.Therefore, absorber core 41 is easily along the lower limb taking the wearer locating posture, therefore, it is possible to the comfortableness of raising diaper 1.

In addition, in the diaper 1 of present embodiment, absorber core 41 is except comprising a pair veutro notch part 43 (a pair notch part), and absorber core 41 also comprises a pair dorsal part notch part 44 (other a pair notch part).Therefore, it is possible at the position between veutro notch part 43 and dorsal part notch part 44 of absorber core 41, that is, at the position be clipped between the lower limb (crotch) taking the wearer locating posture of absorber core 41, distortion degree of freedom can be increased.Therefore, utilize the distortion of absorber core 41, the grip force of crotch taking the wearer locating posture can be relaxed, therefore, it is possible to reduce the compressing (repulsive force) of wearer to improve comfortableness.

Especially, between the opposite side of the length direction of the side of the length direction of a pair veutro notch part 43 and a pair dorsal part notch part 44, the both ends on the width of the absorber core 41 of the diaper 1 of present embodiment are outstanding in mode bending projectedly inside width.As a result, absorber core 41 can easily along the root of lower limb taking the wearer locating posture.

The position of the surrounding of the position of the surrounding of a pair veutro notch part 43 of absorber core 41 and a pair dorsal part notch part 44 of absorber core 41 has low rigidity, and becomes the basic point of folded diaper 1 along its length.Therefore, as shown in Figure 7 A, the diaper 1 (absorber core 41) of present embodiment easily can be formed as the 3D shape of the health along wearer.In other words, can easily realize the position of the veutro of a pair veutro notch part 43 and erect at the position of the dorsal part of a pair dorsal part notch part 44 and the position between a pair veutro notch part 43 and a pair dorsal part notch part 44 of absorber core 41 as the shape of bottom.As mentioned above, by the top 43a of veutro notch part 43 being set to the second area A2 of abutting end 1c1 of opposing product center (position b) near fixing band 10, the position folded diaper 1 of front side of root of the lower limb taking the wearer locating posture can be positioned at.

Simultaneously, as shown in Figure 5, preferably: the top 44a of dorsal part notch part 44 (the narrowest position in the position being clipped between other a pair notch part of absorber core 41) be arranged on both sides from from the distance L4 (=L1x0.1) of product center (position b) with 10% of the length L1 the length direction of diaper 1 to length direction away from SECTOR-SEVEN territory A7 in, in other words, the center roughly on the length direction of diaper 1.Therefore, it is possible to take the drosal part of the root of the lower limb of the wearer locating posture (that is, wearer's and earth surface the buttocks of lying on the back and when taking to locate posture lower limb start the position between the position that promotes) folded diaper 1.

Therefore, it is possible to dimensionally form diaper 1, thus along taking the health of the wearer locating posture.Therefore, mode along location posture wears diaper 1 to force tractive to prevent diaper 1, therefore, it is possible to reduce the compressing of diaper 1 couple of wearer, suppresses the edema of wearer with the comfortableness improved when wearing diaper 1.In addition, unlikely generation gap between diaper 1 and wearer, makes it possible to control excremental leakage.But, be not limited to the above, dorsal part notch part 44 can be set to from product center with 10% of product length L1 both sides from distance L4 to length direction away from region, only veutro notch part 43 can be set to absorber core 41 when not arranging dorsal part notch part 44.

In addition, as the diaper 1 of present embodiment, at least from a pair veutro notch part 43 (the end 43b of the opposite side of the length direction in Fig. 7 B) in the scope on the length direction of a pair dorsal part notch part 44 (the end 44c of the side of length direction), when lower limb flexible along its length encloses retractility component, namely, lower limb encloses retractility component 6 and three-dimensional rivel retractility component 22 when being set to the both ends on width, utilize the contractility of retractility component, the diaper 1 along its length bending skin side surface that makes becomes inner side.Therefore, diaper 1 can become spherical by dimensional topography, thus easily along taking the wearer locating posture.Note, usually because the end of retractility component is not fixed and can not contribute to retractility, so Fig. 1 only illustrates the position contributing to retractility of retractility component under elongation state.Advantageously: the region more than scope of the position that retractility component contributes to retractility on the length direction from a pair veutro notch part 43 to a pair dorsal part notch part 44 and existing.But be not limited thereto, diaper 1 can comprise lower limb and enclose an only side in retractility component 6 and three-dimensional rivel retractility component 22, or diaper 1 can not comprise retractility component flexible along its length.

In addition, in the diaper 1 of present embodiment, the shape of veutro notch part 43 and the shape of dorsal part notch part 44 are chevron.In other words, as shown in Figure 7 B, shape is for making in notch part 43,44, length on the length direction at the position in the outside of width is greater than the length on the length direction at the position of the inner side of width, and the position in the longitudinal direction of top 43a, 44a is positioned at the both ends (between end 43b and end 43c and between end 44b and end 44c) on the length direction of the end 431 and 441 in the outside of width.

Therefore, notch part 43,44 shrinks in the width direction because lower limb encloses the contraction of retractility component 6 and three-dimensional rivel retractility component 22, makes notch part 43,44 be by the shape (pinchedform) of pinching.As a result, as shown in Figure 7 A, between a pair veutro notch part 43, form the gauffer 45 along width, between a pair dorsal part notch part 44, form the gauffer 46 along width.Particularly, the position on the length direction of top 43a, the 44a in expectation gap portion 43,44 is arranged on the central part (central part between end 43b and end 43c, central part) between end 44b and end 44c at the both ends on the length direction of the end 431,441 in the outside of the width of notch part 43,44.Like this, the gauffer 44,45 of neat (neat) can be formed in the mode connecting a pair veutro notch part 43 and a pair dorsal part notch part 44 respectively.But the shape of notch part 43,44 is not limited to the above.

Utilize in the raw time, be formed with the diaper 1 of aforementioned gauffer 45,46, make it possible to using gauffer 45,46 as basic point folded diaper 1, therefore, it is possible to easily dimensionally form diaper 1 with along the health taking the wearer locating posture.In addition, the aid wearing diaper 1 to SFD can confirm gauffer 45,46 by naked eyes, thus to realize diaper 1 be easily along the shape of location posture, therefore, it is possible to put on diaper 1 in the mode of applicable location posture.But be not limited thereto, diaper 1 in the raw does not need to form gauffer 45,46.

Note, present embodiment supposition absorber core 41 fully opening when veutro notch part 43 and dorsal part notch part 44 do not exist any absorbent material being configured to absorber core 41, but, be not limited thereto.Notch part can be set to the weight of the unit are of absorbent material and peripheral region and be in a ratio of lower position (such as, the weight of unit are and peripheral region are in a ratio of the position of 50% or less).Equally in this case, the rigidity due to the surrounding position of notch part is low and to be out of shape degree of freedom high, so diaper 1 (absorber core 41) can be made along the wearer taking to locate posture.

===modified example===

Fig. 8 and Fig. 9 is the general view of the diaper 1 of modified example.In the foregoing embodiment, the veutro notch part 43 of chevron and the dorsal part notch part 44 of chevron are set to the narrow (large notch part) of absorber core 41, but, be not limited thereto.Such as, as shown in Figure 8, absorber core 41 only can be provided with the veutro notch part 43 of chevron and the dorsal part notch part 44 of chevron.In other words, the width that can make the absorber core 41 between a pair veutro notch part 43 and a pair dorsal part notch part 44 is identical with the width of the absorber core 41 of the opposite side of the length direction being positioned at a pair veutro notch part 43, or identical with the width of the absorber core 41 of the side of the length direction of a pair dorsal part notch part 44.The size of the absorber core 41 of SFD diaper 1 is originally just little, even if time different according to location posture in the position of lower limb, the position that excretion occurs also can not too much change, make it possible to guarantee excremental amount when absorber core does not narrow between veutro notch part 43 and dorsal part notch part 44, thus control excremental leakage.

In addition, diaper 1 can also be fixed to wearer by the end 1B touching the opposite side of the length direction of the abdominal part of wearer of diaper 1, makes the root of the lower limb of wearer rise to the position of the end 1B of the opposite side of the length direction near diaper 1.Therefore, the top 43a of veutro notch part 43 can be arranged on the opposite side of the length direction at the center (position i) of the Section Eight territory A8 between the end 1B (position h) of the opposite side of the length direction of product center (position b) and the diaper 1 being positioned at diaper 1, that is, be arranged on the center (position i) being positioned at Section Eight territory A8 and abutting end 1c1 (position a) between the 9th region A9.

In addition, as shown in Figure 8, the top 43a of veutro notch part 43 can be set to abutting end 1c1 position in the product center of relative diaper 1 (position b) in the second area A2 of the abutting end 1c1 of fixing band 10, and (position a), or is set to product center position (position b).

In addition, be not limited to the notch part of chevron to be set to absorber core 41, as shown in Figure 9, a pair notch part 47 (the oblique line portion in figure) with gradual slope extended along its length can be only set.Equally in this case, expect the position with minimum widith W1 in the position clipped by a pair notch part 47 of absorber core 41 to be set to the second area A2 of opposing product center (position b) near the abutting end 1c1 of fixing band 10.Utilize above structure, absorber core 41 can be made along the lower limb taking the wearer locating posture.

In addition, as shown in Figure 1, diaper can be following scheme 1: be formed at for the line 50 that cuts being fixed with the part of fixing band 10 cut in the first waist portion 1a the diaper 1 being in deployed condition.In addition, diaper can be following scheme.

The feature of diaper on the basis of the diaper described in scheme 1 of scheme 2 is,

Describedly cut line 50 is formed at the both sides of width respectively each position in the mode corresponding with described each fixing band 10,

The described line 50 that cuts is formed to the path that the part as leg-openings portion extends by leaning on the position of the inner side of width than the described part being fixed with described fixing band 10 of described first waist portion 1a by from the part as waist peristome respectively.

The feature of diaper on the basis of the diaper described in scheme 1 or 2 of scheme 3 is,

The described line 50 that cuts has the multiple through holes run through in a thickness direction, and described multiple through hole is along the described direction arrangement of cutting line 50 and will extend.

Feature on the basis of the diaper that the diaper of scheme 4 is recorded in scheme 3 is,

The described line 50 that cuts has: first cuts line part, and it is formed in the mode extended to the inner side of length direction from the part as waist peristome; And second cuts line part, it is positioned at and cuts line part than described first by the position of the inner side of length direction and the position identical with described fixing band 10 be positioned on length direction,

When the ratio cutting the unit length on the direction that line 50 extends described in accounting for the length of described through hole compares, the described second described ratio cut in line part is less than described first and cuts described ratio in line part.

Feature on the basis of the diaper that the diaper of scheme 5 is recorded in scheme 4 is,

Describedly cut line 50 cutting the position of inner side of line part by length direction than described second and have along with the progresses inside to length direction gradually to the curved surface portion of the curved shape of the lateral displacement of width, when comparing relative to the ratio shared by the described unit length cut on direction that line 50 extends the length of described through hole, the described second described ratio cut in line part is less than the described ratio in described curved surface portion.

Feature on the basis of the diaper that the diaper of scheme 6 is recorded in either a program in scheme 1 to 3 is,

The described line 50 that cuts has: straight section, and it is alongst linearly extension from the part as described waist peristome; And the curved surface portion of curved shape, it is positioned at than described straight section by the position of inner side of length direction and the lateral displacement along with the progresses inside to length direction gradually to width.

Feature on the basis of the diaper that the diaper of scheme 7 is recorded in scheme 6 is,

In the position of the both sides of width, be alongst provided with the lower limb that the part for making as described leg-openings portion shrinks along its length respectively and enclose retractility component 6,

Described curved surface portion is hypothetically being divided in the part by described waist peristome side and this two-part situation of part by side, described leg-openings portion, when lower limb described viewed from thickness direction encloses retractility component 6, described lower limb encloses retractility component 6 and the partial intersection by described waist peristome side in described curved surface portion.

Feature on the basis of the diaper that the diaper of scheme 8 is recorded in scheme 6 or 7 is,

Described diaper has multiple stacked sheets of through-thickness,

The lamination sheets number of described that locates at least partially in described curved surface portion is less than the lamination sheets number of described of described straight part office.

Feature on the basis of the diaper that the diaper of scheme 9 is recorded in either a program in scheme 6 to 8 is,

Described diaper has bearing of trend resin molding alongst (back side film 3) during fabrication, and described straight section is formed at described resin molding.

Feature on the basis of the diaper that the diaper of scheme 10 is recorded in either a program in scheme 1 to 9 is,

The each position of the both sides of width is respectively equipped with the three-dimensional rivel forming portion 20 of the lamellar alongst arranged,

The rising portions that described three-dimensional rivel forming portion 20 is arranged with the base end part that can not erect in a thickness direction in the direction of the width and can erects to the skin side of thickness direction for fulcrum with described base end part, shrink along described length direction under making the effect of the contractility of described rising portions on the length direction acting on described rising portions, thus described rising portions is erected to the skin side of thickness direction

The described line 50 that cuts is formed at the position leaning on the outside of width than described base end part and described rising portions.

Feature on the basis of the diaper that the diaper of scheme 11 is recorded in either a program in scheme 1 to 10 is,

This diaper has absorber core 41 in the centre of width, this absorber core 41 be the liquid absorbent material by will absorbing fluid be used for stacked in a thickness direction and formed,

Describedly cut linear 50 and be formed in than the position of described absorber core 41 by the outside of width.

Feature on the basis of the diaper that a kind of flat type disposable diaper is recorded in either a program in scheme 1 to 11 is,

In described second waist portion 1c as in the part of waist peristome, be positioned at and cut the identical position of line 50 with described in the direction of the width, be alongst formed with line of cut (not shown).

Aforementioned embodiments is intended that to be convenient to understand the present invention, instead of restriction the present invention.Not mediocre polylogia, can carry out modification and improvement to the present invention when not departing from scope of the present invention, equivalent of the present invention is also contained by the present invention.

[description of reference numerals]

1 (deploying type is disposable) diaper, 1a first waist portion, 1b crotch, 1c second waist portion, 2 top flats, 3 back side film, 4 absorbers, 41 absorber cores, 42 cladding materials, 43 veutro notch parts (a pair notch part), the end in the outside of 431 widths, 43a top, 43b, both ends on 43c length direction, 44 dorsal part notch parts (other a pair notch part), the end in the outside of 441 widths, 44a top, 44b, both ends on 44c length direction, 45 gauffers, 46 gauffers, 47 a pair notch part, 5 outer loads, 6 lower limbs enclose retractility component (retractility component), 7 lower limbs, 10 fixing bands, 11 base materials, 12 hook tabs, 13 dorsal part flank sheets, 14 veutro flank sheets (flank sheet), 20 three-dimensional rivels, 21 three-dimensional rivel sheets, 22 three-dimensional rivel retractility components (retractility component), b product center, a, the abutting end of 1c1 fixing band, L1 first length, L2 second length, 50 cut line

Claims

1. a disposable diaper, it is deploying type, and has length direction intersected with each other and width, and from the side of described length direction, be configured with the first waist portion, crotch and the second waist portion, it is characterized in that,

This disposable diaper have absorber core and from described first waist portion to two of described width outside extend a pair fixing band,

When being alignd in the both ends on the described length direction of described disposable diaper, in the position on the described length direction of the end of described crotch side in described second waist portion of leaning on described length direction of described fixing band, there is the abutting end of described fixing band

The described both ends of absorber core on described width have at least one pair of notch part,

On described length direction, the narrowest position of the width in the position being sandwiched between described a pair notch part of described absorber core is arranged in as lower area: this region be as described in disposable diaper center product center and as described in region between abutting end, this region center and as described in region between abutting end.

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

Described second waist portion have relative to described crotch to a pair flank sheet extended outside two of described width,

On described length direction, the narrowest position of the width in the position being sandwiched between described a pair notch part of described absorber core is arranged in as lower area: this region be than as described in product center and as described in flank sheet as described in outermost end on width by as described in length direction as described in side end between region center, by as described in the region of opposite side.

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

On described length direction, the narrowest position of the width in the position being sandwiched between described a pair notch part of described absorber core is positioned at as lower area: this region be than as described in product center and as described in absorber core by as described in opposite side end between region center, by as described in the region of opposite side.

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

Using the length on described length direction of described disposable diaper as the first length, and using till the end of the described opposite side by described length direction at position the narrowest for the width in the position being sandwiched between described a pair notch part of playing described absorber core from the end of described opposite side by described length direction of described disposable diaper, length on described length direction as the second length

Described second length is more than 22% relative to the ratio shared by described first length and less than 26%.

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

Described absorber core has another to notch part than described a pair notch part by the position of described side of described length direction.

6. disposable diaper according to claim 5, is characterized in that,

Another position the narrowest to the width in the position between notch part described that is sandwiched in of described absorber core is positioned at from described product center to the region to the both sides of described length direction apart from the distance of this product center being the extension position of 10% of the length on described length direction of described disposable diaper.

7. the disposable diaper according to claim 5 or 6, is characterized in that,

Both ends on described width, be provided with at least can play from described a pair notch part described another in the scope on described length direction till notch part along the retractility component that described length direction is flexible,

The shape of described notch part is as follows: the length on described length direction by the position in the outside of described width is longer than the length on described length direction at the position of the inner side by described width, and between the both ends on described length direction of the position on described length direction at top in the end in the outside by described width.

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

Under the naturalness of described disposable diaper, between described a pair notch part and described another to notch part between be formed with the gauffer extended along described width respectively.

9. the disposable diaper according to any one of claim 5 to 8, is characterized in that,

Described a pair notch part of described absorber core is with described another is equal by the width of the part of the described opposite side of described length direction to a pair notch part described in the ratio of the width of the part between notch part and described absorber core.