CN204428284U

CN204428284U - Disposable diaper

Info

Publication number: CN204428284U
Application number: CN201420822045.2U
Authority: CN
Inventors: 住谷秀雄; 佐藤信也; 南崎亚由香
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2013-12-20
Filing date: 2014-12-22
Publication date: 2015-07-01
Anticipated expiration: 2024-12-22
Also published as: JP2015119786A; JP6183806B2; RU155769U1

Abstract

Disposable diaper of the present utility model (1) comprises positive dough sheet (2), absorber (4) between outer-skin sheet (3) and two panels.Absorber (4) has the long absorbent core (40) in the direction (X) corresponding with the fore-and-aft direction of wearer, is formed with the slot (7) extended at long side direction at absorbent core (40).In absorbent core (40), the area of side more forward than long side direction Central Line C4 is greater than the area of side rearward, this Central Line C4 is positioned at side more forward than the Central Line C1 of diaper, the Central Line C7 of slot (7) is positioned at side more forward than the Central Line C4 of absorbent core (40), absorbent core (40) has the embossed area (8) that compression recess (81) is formed in loose point-like, embossed area (8) is overlapping with a part for slot (7), and the Central Line C8 of embossed area (8) is positioned at the scope of the Central Line C7 from the Central Line C1 of diaper to slot.

Description

Disposable diaper

Technical field

This utility model relates to disposable diaper.

Background technology

As the absorber of disposable diaper, from the view point of raising conformability, the known part by the crotch bottom being configured at wearer is formed as the shape that centre narrows.But namely the skin that liquid absorber is formed as the shape that centre narrows, is difficult to guarantee sufficient absorptive capacity in crotch bottom, easy generation liquid leaks from crotch bottom, absorbing returns wearer returns liquid.

As the technology arranging slot at the absorbent core forming absorber, in patent documentation 1, about having upside absorbed layer and the absorbent structure body of lower absorbent layer, describing lower absorbent layer and there is the absorbent structure body that the opening, the upside absorbed layer that extend at fore-and-aft direction cover the rear side end of above-mentioned opening.In addition, in patent documentation 2, record and be formed in the mode extended along the long side direction of absorbent core the slot that non-skin opposite face side has peristome at absorbent core.

Prior art document

Patent documentation

Patent documentation 1: JP 2012-040260 publication

Patent documentation 2: JP 2012-143542 publication

Utility model content

In patent documentation 1, record the opening at lower absorbent layer, urine waits in fore-and-aft direction diffusion, is diffused into that the urine of the rear side of opening etc. is covered by upside absorbed layer by the rear side end of opening and the pocket that formed is accommodated.But the opening of lower absorbent layer is only formed near the central part of absorbent commodity, and therefore, liquid easily stays in crotch adjacent bottom portions.

Slot in patent documentation 2 extends on the fore-and-aft direction of absorbent core longlyer, but absorbent core is not arranged difference in front and back to absorptive capacity in the asymmetrical mode in front and back by record.In addition, arranging in the technology of slot existing at absorbent core, when urinating in the position of staggering from the portion of urinating in design, sometimes effectively this liquid can not be induced to the large region of absorptive capacity via slot.

This utility model relates to and comprises the positive dough sheet forming skin opposite face, the disposable diaper forming the non-outer-skin sheet of skin opposite face and the absorber between two panels.Above-mentioned absorber has the absorbent core corresponding to the long shape of the long side direction of the fore-and-aft direction of wearer, at this absorbent core, is formed with the slot extended at long side direction.In above-mentioned absorbent core, than the area area of forward for the long side direction Central Line of total length 2 decile of its long side direction side is greater than than side rearward, this long side direction Central Line, the long side direction Central Line of this absorbent core is positioned at the position of side more forward than the long side direction Central Line of diaper, and the long side direction Central Line of above-mentioned slot is positioned at side more forward than the long side direction Central Line of this absorbent core.Above-mentioned absorbent core has the embossed area by embossing processing, compression recess being formed as loose point-like, compressing the mutual distance of recess in this embossed area is more than 0.1mm below 5mm, each compression recess full-size be more than 0.1mm below 5mm, area be absorbent core overlook less than more than 5% 50% of gross area.Above-mentioned embossed area is overlapping with a part for above-mentioned slot, and the long side direction Central Line of this embossed area is positioned at the scope of the long side direction Central Line from the long side direction Central Line of above-mentioned diaper to above-mentioned slot.

Accompanying drawing explanation

Fig. 1 is the expansion top view of the disposable diaper as an embodiment of the present utility model.

Fig. 2 is the II-II line profile of Fig. 1.

Fig. 3 is the diagrammatic top view of the position relationship of each several part represented in the diaper shown in Fig. 1.

Fig. 4 is the signal amplification plan view of the absorber of the preferred disposition example representing the compression recess formed in embossed area.

Fig. 5 is the signal amplification plan view of the absorber of other preferred disposition example representing the compression recess formed in embossed area.

Fig. 6 is the key diagram of the action effect of the diaper shown in Fig. 1.

Fig. 7 is the figure corresponding with Fig. 3 of the disposable diaper as other embodiment in addition of the present utility model.

Fig. 8 is the top view of the absorbent core of the disposable diaper represented as other embodiment in addition of the present utility model.

Fig. 9 is the photo of the scope (diffusion area) of express liquid diffusion in the mensuration of the liquid diffusion area of embodiment and comparative example.

Detailed description of the invention

This utility model relate to the large-area front area that can make the urine of discharge in absorbent core spread efficiently, can the disposable diaper that liquid preventive excellence be returned of efficiency utilization absorptive capacity, anti-leakage and the skin to wearer.

Below, to this utility model based on its preferred implementation, be described with reference to accompanying drawing.

Disposable diaper 1 as an embodiment of the present utility model is (following, simply be called diaper 1), as depicted in figs. 1 and 2, possess the positive dough sheet 2 of the liquid permeability forming skin opposite face, form the outer-skin sheet 3 of non-skin opposite face and be positioned at the absorber 4 of the liquid retainability between two panels 2,3.Skin opposite face is the face when the wearing of diaper towards the skin side of wearer, and non-skin opposite face is the face when the wearing of diaper towards the opposition side, skin side with wearer.

Diaper 1 has the direction corresponding with the fore-and-aft direction of wearer, more specifically for when dressing and the long side direction X in the consistent direction of the fore-and-aft direction of wearer and the width Y that intersects with above-mentioned long side direction X under expanding into diaper 1 as shown in Figure 1 plane state.

Diaper 1 has the veutro portion A being configured at the veutro of wearer when dressing, the drosal part B being configured at the dorsal part of wearer when dressing and is configured at the crotch bottom C of the hip crotch of wearer when dressing on long side direction X.In addition, the diaper 1 of present embodiment as shown in Figure 1, is the disposable diaper of deploying type, the edge, both sides of drosal part B is provided with magic tape 5,5, be provided with the hasp district 51 of set magic tape 5,5 at the outer surface of veutro portion A.In addition, in diaper 1, the both side edges of crotch bottom C is formed as arc-shaped, when overlooking, has the shape of tightening up at the central part of long side direction X.

Outer-skin sheet 3 is the sheet of the non-skin opposite face (outer surface) forming diaper 1, and viewed from the non-skin opposite face side of diaper 1, the plan view shape of outer-skin sheet 3 is have the shape consistent with the outer shape of diaper 1.As outer-skin sheet 3, such as, preferably use the sheet that the resin molding of the difficult permeability of liquid is formed, the sheet etc. obtained at the non-skin opposite face side lamination adhesive non-woven fabrics of resin molding.Outer-skin sheet 3 can be the sheet linked at the long side direction of diaper 1 by the sheet of more than 2 or 3.

Positive dough sheet 2 is made up of various known of liquid permeability.As depicted in figs. 1 and 2, width is narrower than outer-skin sheet 3, is configured on the width central part of outer-skin sheet 3 for positive dough sheet 2 in present embodiment.Between positive dough sheet 2 and outer-skin sheet 3, be provided with the absorber 4 of shape long on the long side direction X of diaper 1.

Absorber 4 comprises: absorbent core 40, and it contains the granule of the fiber assembly be made up of the fibrous material of paper pulp fiber etc. and the water absorbent polymer kept by this fiber assembly; The core covering piece 41,42 of this absorbent core 40 coated.As core covering piece 41,42, various known material can be used, such as, preferably use the thin paper of water penetration, the non-woven fabrics etc. of water penetration as tissue paper.Absorbent core 40 is formed as the plan view shape roughly the same with absorber 4.Core covering piece 41,42 the long side direction with absorbent core 40 two ends 40d, 40e same position or there are from these two ends 40d, 40e to the position that long side direction X extends out a little the two ends of long side direction X.Absorbent core 40, as shown in Figure 3, has the both side edges 40s of long side direction, 40s form concavity portion of tightening up 40c and the veutro wide width part 40a be positioned at before and after it and dorsal part wide width part 40b towards inner side.

As depicted in figs. 1 and 2, in the both sides of the crotch bottom C of diaper 1, leg elastic members 9 configures with extended configuration.Leg elastic members 9 is configured with one or more respectively in the long side direction both sides of diaper 1.Leg elastic members 9 is fixed by bonding agent between outer-skin sheet 3 and the sheet material 62 of three-dimensional fold 6,6 formation.Leg elastic members 9 is shunk, and forms leg creases at the leg in the lower limb week being configured at wearer.In addition, in the both sides of the long side direction of diaper 1, be configured with the sheet material 62 of the three-dimensional fold formation with elastomeric element 61, when the wearing of diaper by the contraction of elastomeric element 61, form the three-dimensional fold 6 erected towards the skin of wearer.

In addition, the diaper 1 of present embodiment has Central Line (not shown) the symmetrical shape relative to extending on the long side direction corresponding with the fore-and-aft direction of wearer.

Further illustrate the absorbent core 40 in present embodiment, absorbent core 40, as shown in Figure 1, there is shape long on the long side direction X corresponding with the fore-and-aft direction of wearer, at absorbent core 40, as shown in Figure 1, the slot 7 extended on long side direction X is formed.

Slot 7 is the part of formation material that formed in a part for absorbent core, that there is not absorbent core, is along the elongated shape of the long side direction of absorbent core when overlooking, through absorbent core 40 in a thickness direction.

The width W 7 of slot 7 is preferably more than 3mm, is more preferably more than 5mm, and is preferably below 20mm, is more preferably below 15mm.

For the expression that the part that there is not formation material is such, comprise non-existent in fact situation, such as, manufacture and there is not formation material, also comprise the situation of the formation material that there is inevitably trace.Wherein, the grammes per square metre that there is not the formation material in the part forming material is preferably less than 1/10th of this grammes per square metre of other parts.

In addition, absorbent core 40 in present embodiment, as shown in Figure 3, have asymmetrical shape in the front and back of the total length L4 binary long side direction Central Line C4 by its long side direction X, the area Sa of side more forward than long side direction Central Line C4 is greater than the area Sb than this long side direction Central Line C4 side rearward.Area Sa, Sb mentioned here are respectively plane absorbent core being expanded into plane state and amass, and area comprises the area of slot 7 part.

In addition, as shown in Figure 3, the long side direction Central Line C4 of absorbent core 40 is positioned at side more forward than the long side direction Central Line C1 of diaper, and the long side direction Central Line C7 of above-mentioned slot 7 is positioned at side more forward than the long side direction Central Line C4 of absorbent core 40.

Total length L with the equidirectional diaper 1 of the long side direction X of absorbent core 40 halves and the straight line extended at the width Y of absorbent core 40 by the long side direction Central Line C1 of diaper, and the total length L7 of slot 7 halves and the straight line extended at the width Y of absorbent core 40 by the long side direction Central Line C7 of slot 7.In addition, front side be in the long side direction X of absorbent core, be configured at the front side of the veutro of wearer when dressing end 40d near side, rear side be in the long side direction X of absorbent core, be configured at the dorsal part of the dorsal part of wearer when dressing end 40e near side.

In addition, the absorbent core 40 in present embodiment has the embossed area 8 by embossing processing, compression recess being formed as loose point-like.Embossed area 8 is regions that the compression recess 81 be processed to form by embossing is configured in the mode meeting the following conditions (1) and (2).

(1) distance compressing recess mutual is more than 0.1mm below 5mm.

(2) full-size of each compression recess is more than 0.1mm below 5mm.

When overlooking above-mentioned zone, the embossing group being configured to loose point-like configures with having the shape of rectangle, square, ellipse etc.The profile of shape is the general shape that each embossing of the outer rim by being positioned at embossing group is formed by connecting.

(about above-mentioned condition (1))

Fig. 4 is the amplification plan view of the configuration representing the compression recess 81 formed in the embossed area 8 in present embodiment.Compression recess 81 in present embodiment has: compression recess adjacent on the long side direction X of absorbent core 40: compression recess adjacent on the width Y of absorbent core 40; The compression recess adjacent obliquely intersected in two directions of long side direction and width with absorbent core 40, in order to meet above-mentioned condition (1), the beeline c among these between the compression recess that long side direction X is adjacent with width Y, d, a, b meet the scope of regulation in above-mentioned (1).This beeline is outer Guo's line distance each other of the plan view shape of compression recess.

In the configuration pattern of the compression recess shown in Fig. 4, preferred distance a ~ d is mutually identical.

In addition, in compression recess 81, the together densification by compressing in a thickness direction of absorbent core and core covering piece, in addition, the skin opposite face side of absorbent core forms concavity.Compression recess 82 described later too.

In addition, Fig. 5 is for representing the amplification plan view of other configuration of the compression recess formed in embossed area 8, as shown in Figure 5, when long side direction X compression recess 81 is interconnected, the scope specified in above-mentioned (1) with the beeline f being configured at the compression recess 81 of immediate position adjacent on the direction of long side direction X, g, h.As shown in Figure 5, the shape linking the center of adjacent compression recess becomes in leg-of-mutton configuration pattern, and central point spacing or the beeline f ~ g of preferably adjacent compression recess are mutually identical.

The mutual distance of compression recess in above-mentioned condition (1) is more than 0.1mm below 5mm, is more preferably more than 1mm, more preferably more than 2mm, in addition, is more preferably below 4mm, more preferably below 3mm.

(about above-mentioned condition (2))

About above-mentioned condition (2), when full-size of each compression recess refers to that the plan view shape of compression recess 81 is as shown in Figure 4 circular, this diameter of a circle L81, when for other shape, the distance for the line of 2 on the periphery in link pressure puncture portion 81 is the distance of maximum line.Such as, when the plan view shape of compression recess 81 is oval or oval, be the length of its major axis, during for square or rectangular, for it has cornerwise length of greatest length.

The full-size of the compression recess in above-mentioned condition (2) is more than 0.1mm below 5mm, is more preferably more than 1mm, more preferably more than 2mm, in addition, is more preferably below 4mm, more preferably below 3mm.

In absorbent core 40 in present embodiment, comprise the embossed area 8 of the compression recess 81 that the mode that has to meet above-mentioned condition (1) and (2) configures, the area of this embossed area 8 be absorbent core 40 overlook less than more than 5% 50% of gross area.The area of embossed area 8 be compression recess 81 area and be positioned at compression recess 81 each other, the summation of the area of part beyond compression recess 81.

In addition, as shown in Figure 3, embossed area 8 is overlapping with a part for the 7b side, rear end (rear end side of long side direction) of slot 7.The embossed area 8 of present embodiment is by between knurling rolls and anvil roller by the duplexer that obtains with the coated absorbent core 40 of core covering piece 41,42, above-mentioned knurling rolls possess embossing pin (the columned protuberance of embossing) with the pressurization part of the configuration pattern formation shown in Fig. 4 at side face, are pressurizeed and heat and formed by this duplexer with embossing pin from upper-side core covering piece 41 side.Like this, implement embossing be processed to form embossed area 8 by the core covering piece 41 of stacked upside and absorbent core 40, therefore, as shown in Figure 2, in each compression recess 81, core covering piece 41 and the absorbent core 40 of upside together cave in, and core covering piece 41 is engaged to be fixed in each compression recess 81.

In addition, by the pressurized part of the pressurization part of knurling rolls, if there is slot 7, then the protuberance of the part in this pressurization part becomes and pressurizes to slot 7 part.In this case, also the situation that core covering piece 41 is pressed by the protuberance of embossing separately can be there is, now, also formed with the configuration pattern same with other parts with the part of this slot 7 overlap and compress recess 81, judge whether to meet above-mentioned (1) and (2), in addition, judge that whether the area of embossed area, embossed area be overlapping with slot.

In addition, the embossed area 8 in present embodiment, as shown in Figure 3, the long side direction Central Line C8 of embossed area 8 is positioned at the scope of the long side direction Central Line C1 to the long side direction Central Line C7 of slot from diaper.The long side direction Central Line C8 of embossed area 8 is positioned at the mode of above-mentioned scope, also comprises the situation that this Central Line C8 is overlapping with the long side direction Central Line C1 of diaper or the long side direction Central Line C7 of slot.

The total length L8 of the embossed area 8 of the long side direction X of middle absorbent core 40 halves, at the straight line that the width Y of absorbent core 40 extends by the long side direction Central Line C8 of embossed area 8.

Disposable diaper 1 person of being worn in the same manner as the disposable diaper of common deploying type of present embodiment dresses and uses.Like this, when wearer is urinated, when the position of portion of the urinating P that the urine of discharge directly supplies is overlapping with slot 7, this urine is guided along slot 7 by the front to diaper.On the other hand, the position of portion of the urinating P that the urine of discharging directly supplies, as shown in Figure 6, even if when staggering from the position of slot 7, as long as urinate, portion P is overlapping with embossed area 8, and this liquid is difficult to the part diffusion beyond embossed area 8, and easily at embossed area 8 internal diffusion, therefore, this liquid easily arrives slot 7 at embossed area 8 internal diffusion.The liquid arriving slot 7 is directed to the front of diaper along slot 7.The liquid directed to the front of diaper along slot 7 is expanded along slot 7 to the front of diaper, and is positioned at partially absorbing of the both sides of slot.

Diaper 1 according to the present embodiment, by such effect, can make liquid be diffused into the region of the large-area front side in absorbent core 40 efficiently, effectively can not utilize the absorptive capacity of absorbent core lavishly.In addition, thus, the disposable diaper returning liquid preventive excellence of the skin to wearer is formed.

From the view point of realizing the viewpoint of such effect more reliably or realizing additional preferred effect, diaper 1 preferably meets the following condition of more than or two.

First, as shown in Figure 6, embossed area 8 preferably has the part 8s, the 8s that are positioned at its left and right sides across slot 7.In addition, misplace significantly from the view point of tackling from the portion P of urinating, as shown in Figure 6, embossed area 8 more preferably has the part 8s, the 8s that are positioned at the part 8b more more rearward than the rear end 7b (end of rear side) of slot 7 and are positioned at its left and right sides across slot 7.

In absorbent core 40, the area Sa of side more forward than long side direction Central Line C4 is preferably more than 0.96 with the ratio (Sa/Sb) than this long side direction Central Line C4 area Sb of side rearward, be more preferably more than 1.00, and be preferably less than 1.50, be more preferably less than 1.22, in addition, be preferably less than more than 0.96 1.50, be more preferably less than more than 1.00 1.22.

In addition, be above-mentionedly preferably greater than 1.00 than (Sa/Sb) and be less than or equal to 1.50, be less than or equal to 1.22 more preferably greater than 1.00.

In addition, the position of the long side direction Central Line C4 of absorbent core 40 preferably leaves more than 5mm from the long side direction Central Line C1 of diaper to front side, more preferably leaves more than 10mm below 40mm.

In addition, the position of the long side direction Central Line C7 of slot preferably leaves more than 10mm from the long side direction Central Line C4 of absorbent core to front side, more preferably leaves more than 30mm below 70mm.

In absorbent core 40, from the view point of the absorptive capacity adjusting veutro portion and drosal part, the ratio (Wa/Wb) of the width W b of the end on rear side of the width W a of the end on front side of long side direction and long side direction is preferably less than more than 0.9 1.1, is more preferably less than more than 0.95 1.05.

From the view point of the conformability in lower limb week, in absorbent core 40, the width W c tightening up the minimum widith portion Cs of portion 40c is relative to the Breadth Maximum of veutro wide width part 40a (in the example shown in Fig. 3, identical with the width W a of anterior end 40d) ratio be preferably less than 0.93, be more preferably less than 0.90, in addition, be preferably more than 0.70, be more preferably more than 0.80.In addition, from the same viewpoint, in absorbent core 40, the width W c tightening up the minimum widith portion Cs of portion 40c is relative to the Breadth Maximum of dorsal part wide width part 40b (in the example shown in Fig. 3, identical with the width W b of back end 40e) ratio be preferably less than 0.93, be more preferably less than 0.90, in addition, be preferably more than 0.70, be more preferably more than 0.80.

In addition, absorbent core 40 has when tightening up portion 40c, from the view point of the conformability in lower limb week, this minimum widith portion Cs tightening up portion 40c is preferably placed at the position than the forward side of the long side direction centrage C4 of absorbent core 40 or rear side, as shown in Figure 3, when the diaper being object with the high monthly age, from the view point of the conformability in lower limb week and the balance of absorptive capacity, be more preferably positioned at the long side direction centrage C4 side rearward than this absorbent core 40.

In addition, tighten up the both side edges 40s of portion 40c, 40s, as shown in Figure 3, from the view point of the conformability in lower limb week, be preferably formed to the buckling curve shape recessed towards inner side.In addition, from the view point of improving conformability further, tighten up the both side edges 40s of portion 40c, 40s, as shown in Figure 3, preferably be greater than in the bending degree than minimum widith portion Cs side more rearward in the bending degree of side more forward than the minimum widith portion Cs tightening up portion 40c, such as, preferably the radius of curvature at rear side is less than in the radius of curvature of front side.

In addition, from the view point of the conformability in lower limb week, the length of tightening up the long side direction X at absorbent core 40 of portion 40c is preferably more than 30% relative to the total length L4 of the long side direction X of absorbent core 40, be more preferably more than 40%, and be preferably less than 70%, be more preferably less than 60%, in addition, be preferably 30 ~ 70%, be more preferably 40 ~ 60%.

In addition, in absorbent core 40, when the position of the long side direction Central Line C1 of diaper is divided into 2 parts in front and back, from absorbefacient viewpoint, be preferably 40: 60 ~ 49: 51 than the mass ratio (rear side: front side) of this Central Line C1 part and the part of side more forward than this Central Line C1 of side more rearward, be more preferably 42: 58 ~ 46: 54.

In addition, in absorbent core 40, when the position of the long side direction Central Line C1 of diaper is divided into 2 parts in front and back, from absorbefacient viewpoint, be preferably 40: 60 ~ 49: 51 than the length ratio (rear side: front side) of this Central Line C1 part and the long side direction X at this absorbent core of the part of side more forward than this Central Line C1 of side more rearward, be more preferably 42: 58 ~ 46: 54.

The total length L7 of slot 7 is preferably more than 20% of the total length L of the long side direction of diaper 1, is more preferably more than 30%, in addition, is preferably less than 45%, is more preferably less than 40%, in addition, is preferably 20 ~ 45%, is more preferably 30 ~ 40%.

In addition, about slot 7, the distance of the long side direction Central Line C7 from the end 40d of the front side of absorbent core 40 to slot 7 is preferably more than 15% of the total length L4 of absorbent core 40, be more preferably more than 20%, in addition, be preferably less than 45%, be more preferably less than 40%, in addition, be preferably less than more than 15% 45%, be more preferably less than more than 20% 40%.

In addition, about slot 7, the distance of the end 7b from the end 40d of the front side of absorbent core 40 to the rear side of slot 7 is preferably more than 40% of the total length L4 of absorbent core 40, be more preferably more than 45%, in addition, be preferably less than 60%, be more preferably less than 50%, in addition, be preferably less than more than 40% 60%, be more preferably less than more than 45% 50%.In addition, about slot 7, preferably the end 7a of front side does not arrive the end 40d of the front side of absorbent core 40.

In the slot 7 formed in absorbent core 40, as shown in Figure 2, in the part overlapping with slot 7, be preferably placed at the upper-side core covering piece 41 of the skin opposite face side of absorbent core 40 and be formed as disengaged or leave state between the lower-side core covering piece 42 of non-skin opposite face side.

As positive dough sheet 2, being used as of can being not particularly limited various of always using in the positive dough sheet of disposable diaper etc., such as, can use the non-woven fabrics obtained by various method for making of apertured film, single or multiple lift structure.

Absorbent core 40 in above-mentioned diaper 1, as mentioned above, comprises the granule of the fiber assembly be made up of the fibrous material of paper pulp fiber etc. and the water absorbent polymer kept by this fiber assembly.As the fibrous material forming fiber assembly, the condensation fibrid etc. of the polyolefin fibrids of the hydrophilic fibre of paper pulp fiber, staple fibre, yarn fiber, cellulose acetate etc., polyethylene, polypropylene etc., polyester, polyamide etc. can be used.As the granule of water absorbent polymer, such as, the various water absorbent polymers always used in disposable diaper can be used ad lib, such as, the granule etc. containing sodium polyacrylate, (acrylic acid-ethylene alcohol) copolymer, sodium polyacrylate crosslinked, (Starch with Acrylic Acid) graft copolymer, (isobutyiene-maieic anhydride) copolymer and alkali compound, poly-aspartate etc. can be enumerated.

Absorbent core 40 is preferably through the material that the long-pending fine operation of accumulation obtains in the long-pending fibre recess that the fibrous material being loaded in the supply of air stream is attracted to regulation shape, more preferably fibrous material and water absorbent polymer are loaded in air stream to supply, pile up and manufacture for the stacking states of the regulation of admixture etc. the material obtained.Above-mentioned slot 7 easily can be formed by the protuberance etc. arranging the non-ventilating of the shape corresponding with slot 7 in the long-pending fibre recess of long-pending fibre drum.

Gel is formed as thus the phenomenon being called gel piece (gel blocking) suppressing imbibition after this such from the view point of the water absorbent polymer that the swelling due to imbibition not easily occurs, absorbent core in preferred this utility model contains water absorbent polymer and paper pulp fiber, and the quality of this paper pulp fiber is more than 25% relative to the ratio of the gross mass of this absorbent core.The quality of paper pulp fiber is more preferably more than 30% relative to the ratio of the gross mass of absorbent core, and is preferably less than 70%, is more preferably less than 60%, more specifically, is preferably 25 ~ 70%, is more preferably 30 ~ 60%.The total quality of paper pulp fiber and water absorbent polymer is preferably 90 ~ 100% relative to the ratio of the gross mass of absorbent core, is more preferably 95 ~ 100%.In addition, in absorbent core, in whole regions, the quality of paper pulp fiber can be identical relative to the ratio of the gross mass of absorbent core, and in an absorbent core, this ratio also can change, and also can have different multiple regions.

In addition, in absorber 4, absorbent core 40 is covered by the core covering piece 41,42 that diffusibility is high, can improve the diffusibility of the liquid via slot 7 further, so preferably.Here, about core covering piece, diffusibility is high refers to that Ke Liemu (Klemmmethod) water absorption recorded by following method is preferably more than 0.2g/30sec15mm, is more preferably the scope of 0.2 ~ 0.4g/30sec15mm.

(assay method of Ke Liemu water absorption)

Placed 12 hours under the environment of room temperature 23 DEG C ± 2 DEG C, relative humidity 50%RH ± 2% by determination object sheet (tissue paper), damping is certain state.From the sheet after damping, to cut out MD be 150mm, CD is the rectangular shape of the size of 15mm, and the rectangular shape this cut out is as sample.Inside long side direction, leave the position of 5mm from a minor face of sample, draw the straight line (graticule) parallel with this minor face with pencil.Then, with the bottom making the vertical mode in the long limit of this sample this sample be hung on electronic balance, keep this suspension status, this sample is immersed rapidly and measures in liquid (normal saline) until above-mentioned graticule.In addition, sample hangs close to the mode of said determination liquid to make above-mentioned graticule (straight line of drawing with pencil).Then, component is increased, using this measured value as Klemm water absorption (g/30sec.15mm) by the weight that electronic balance measures from sample being immersed this sample measured liquid after 30 seconds.Klemm water absorption is more, evaluates higher.In addition, be electrically connected with in electronic balance and commercially available electronic balance digital independent software (trade name RsCom Ver2.40:(strain) A & D Inc. be installed) personal computer, thereby, it is possible to the weight change of record sample.

In above-mentioned diaper 1, the core covering piece 42 of the downside of the core covering piece 41 covering the upside of the skin opposite face side of absorbent core 40 and the non-skin opposite face side covering absorbent core 40 is point other sheet, and the core covering piece 42 preferably at least covering non-skin opposite face side is " diffusibility is high " mentioned here sheet.

As the diffusible core covering piece of high liquid, such as, the paper pulp sheet etc. of the cellulose fibre of the cellulose fiber peacekeeping non-bulky employing large volume in the lump can be utilized.

Fig. 7 is the figure of the disposable diaper of other embodiment of the present utility model.

In disposable diaper shown in Fig. 7, in absorbent core 40A, the mode that the linear embossments row 8A that compression recess 82 lines up formation in upright arrangement extends out with the end from embossed area 8 to the front side of absorbent core 40 is formed.In absorbent core 40A shown in Fig. 7, compression recess 82 in linear embossments row 8A is also same with the compression recess 81 in embossed area 8, core covering piece 41 and absorbent core 40 are heated integratedly and pressurize and formed, but the compression recess 82 in linear embossments row 8A is not formed as loose point-like, configuration is interrupted, the portion concave of compression recess 82 to each other also beyond specific pressure puncture portion 81,82 in the mode forming string.Thus, linear embossments row 8A is formed as the channel-shaped that the compression recess 82 that configures discontinuously and the female between them are formed.In compression recess 82 for the formation of linear embossments row 8A, the full-size of each compression recess 82 is preferably more than 1mm below 4mm, is more preferably more than 2mm below 3mm.In addition, compression recess 82 interval to each other adjacent on the long side direction of linear embossments row 8A is preferably more than 0.5mm below 3mm, is more preferably more than 1mm below 2mm.

Absorbent core 40A as shown in Figure 7, by arranging the linear embossments row 8A extended out to the end of the front side of absorbent core 40 from embossed area 8, liquid can be made to spread in the wider scope in the region of the more forward side of C4, long side direction Central Line than absorbent core, more effectively can utilize the absorptive capacity of absorbent core 40A.

About the disposable diaper shown in Fig. 7, the aspect be not particularly illustrated, same with above-mentioned diaper 1, suitably can apply the explanation about diaper 1.

Fig. 8 is the top view of the absorbent core of other example representing the absorbent core that can adopt in this utility model.Absorbent core 40 ' shown in Fig. 8, such as, can replace the absorbent core 40 in above-mentioned diaper 1 to use.

In absorbent core 40 ', not only there is above-mentioned slot 7, also there is the pod 7A beyond slot 7 and translot 7B.These grooves (pod, translot) are all at the through absorbent core 40 ' of thickness direction.In absorbent core 40 ', in the region of side more forward than the long side direction Central Line C4 of absorbent core 40 ', be formed with pod 7A, 7A of extending at long side direction X and the multiple translot 7B extended at the direction Y intersected with this long side direction X, form the multiple little absorbent portion 75 of being surrounded by groove at this absorbent core 40 '.More specifically, pod 7A is respectively formed with one in the both sides of slot 7 of the central authorities being configured at width Y respectively.Translot 7B is formed multiple in the region of the forward side of C4, long side direction Central Line than absorbent core 40 ', and these translots 7B intersects in crosswise with the slot 7 of central authorities respectively, and links respectively with pod 7A, 7A that the slot 7 across central authorities is positioned at its both sides.

Use and there is pod 7A, translot 7B and the absorbent core with the multiple little absorbent portion 75 of being surrounded by groove, the diffusibility of the liquid in the region of side more forward than the long side direction Central Line C4 of absorbent core 40 ' can be improved further, by slot 7 in the liquid wide spread of this region extensive diffusive in this region, as a whole, the area expansion absorbed, realizes getting damp wet reduction and improve anti-leakage.

As shown in Figure 8, even if when there is pod 7A, also slot 7 is determined to the long side direction Central Line C7 of slot.Namely, when there is the multiple groove extended at long side direction in absorbent core, except this groove, also using slot necessary in this utility model for the slot being configured at the central part of width Y, determine the long side direction Central Line of slot based on the allocation position of this slot and length.

In the structure member of above-mentioned diaper 1, the parts be not particularly illustrated, can use in the absorbent commodity of disposable diaper etc. the various parts used without particular limitation.

Above, this utility model is illustrated based on its preferred implementation, but this utility model is not limited to above-mentioned embodiment, can suitably changes.

In addition, disposable diaper of the present utility model, except the disposable diaper of the expansion (with fixed) of child's use, adult, also can be that child uses, the Breeches type disposable diaper of adult.

In addition, the plan view shape of embossed area, can replace rectangle as above, and be formed as circular, the arbitrary shape such as Elliptical is circular.In addition, at the compression recess 81 that embossed area is formed, form the plan view shape that the compression recess 82 of linear embossments row is respective, can circle be replaced, and be formed as the arbitrary shape such as Elliptical circle, tetragon, star.

In addition, embossed area 8 can go its width with stepped expansion for the end to the front side of absorbent core, and in addition, its width also can expand continuously gradually.In addition, also can make to be positioned at the part of tightening up portion 40c different with the width of the part being positioned at veutro wide width part 40a, such as, the width of the part being positioned at veutro wide width part 40a can be made to be 1.1 times ~ 2 times of the width being positioned at the part of tightening up portion 40c.In addition, as shown in Figure 7, about linear embossments row 8A, across slot 7, in its both sides, the distance formed between the linear embossments row 8A of a pair also can be that one end be gone to expand from embossed area 8 to the end of the front side of absorbent core 40, be formed as afterwards being parallel to each other, the distance between the linear embossments row 8A forming a pair also can be parallel to each other in the total length of end to the end of the front side of absorbent core 40 from embossed area 8 side.

In addition, the important document that the explanation clipped in an above-mentioned embodiment and only an embodiment have, can suitably be applicable to other embodiment respectively, and in addition, the important document in each embodiment can suitably phase double replacement between embodiment.

About above-mentioned embodiment of the present utility model (form), also disclose following content (disposable diaper).

＜1＞

A kind of disposable diaper, comprises the positive dough sheet of formation skin opposite face, forms the non-outer-skin sheet of skin opposite face and the absorber between two panels,

Described absorber is included in the absorbent core of shape long on the long side direction corresponding with the fore-and-aft direction of wearer, is formed with the slot extended on long side direction at this absorbent core,

In described absorbent core, than the area area of forward side, binary for the total length of its long side direction long side direction Central Line is greater than than side rearward, described long side direction Central Line, the long side direction Central Line of this absorbent core is positioned at side more forward than the long side direction Central Line of diaper, the long side direction Central Line of described slot is positioned at side more forward than the long side direction Central Line of this absorbent core

Described absorbent core comprises processes by embossing the embossed area being formed with compression recess with loose point-like, compressing the mutual distance of recess in this embossed area is more than 0.1mm below 5mm, the full-size of each compression recess is more than 0.1mm below 5mm, area be absorbent core overlook less than more than 5% 50% of gross area

Described embossed area is overlapping with a part for described slot, and the long side direction Central Line of this embossed area is positioned at the scope of the long side direction Central Line from the long side direction Central Line of described diaper to described slot.

＜2＞

Disposable diaper as described in < 1 >, wherein, above-mentioned embossed area have be positioned at than above-mentioned slot rear end part rearward and be positioned at the part of its left and right sides across this slot.

＜3＞

Disposable diaper as described in < 1 > or < 2 >, wherein, in above-mentioned absorbent core, the ratio (Wa/Wb) of the width W b of the end on rear side of the width W a of the end on front side of long side direction and long side direction is less than more than 0.9 1.1.

＜4＞

As the disposable diaper according to any one of < 1 > ~ < 3 >, wherein, the both side edges that above-mentioned absorbent core is included in long side direction when overlooking forms the portion of tightening up of concavity and the veutro wide width part be positioned at before and after it and dorsal part wide width part to the inside, and the above-mentioned width tightening up the minimum widith portion in portion is less than 0.93 relative to the ratio of the Breadth Maximum of above-mentioned veutro wide width part.

＜5＞

Disposable diaper as described in < 4 >, wherein, above-mentioned minimum widith portion of tightening up portion is positioned at the long side direction centrage side rearward than above-mentioned absorbent core.

＜6＞

Disposable diaper as described in < 4 > or < 5 >, wherein, above-mentioned both side edges of tightening up portion is formed as buckling curve shape recessed to the inside.

＜7＞

As the disposable diaper according to any one of < 1 > ~ < 6 >, wherein, in above-mentioned absorbent core, when the position of the long side direction Central Line of above-mentioned diaper is divided into 2 parts in front and back, the mass ratio (rear side: front side) of rear section and front part is 40: 60 ~ 49: 51.

＜8＞

As the disposable diaper according to any one of < 1 > ~ < 7 >, wherein, in above-mentioned absorbent core, when the position of the long side direction Central Line of above-mentioned diaper is divided into 2 parts in front and back, in the part of rear side and the part of front side, the length ratio (rear side: front side) of the long side direction of this absorbent core is 40: 60 ~ 49: 51.

＜9＞

As the disposable diaper according to any one of < 1 > ~ < 8 >, wherein, above-mentioned absorbent core contains water absorbent polymer and paper pulp fiber, and the quality of this paper pulp fiber is more than 50% relative to the ratio of the gross mass of this absorbent core.

＜10＞

As the disposable diaper according to any one of < 1 > ~ < 9 >, wherein, above-mentioned absorber has the core covering piece of coated above-mentioned absorbent core, in above-mentioned compression recess, this core covering piece and this absorbent core together cave in.

＜11＞

As the disposable diaper according to any one of < 1 > ~ < 10 >, wherein, in above-mentioned absorber, above-mentioned absorbent core is covered by the core covering piece that diffusibility is high.

＜12＞

As the disposable diaper according to any one of < 1 > ~ < 11 >, wherein, compress recess to line up the in upright arrangement linear embossments formed and arrange the mode extended out with the end from above-mentioned embossed area to the front side of above-mentioned absorbent core and formed.

＜13＞

As the disposable diaper according to any one of < 1 > ~ < 12 >, wherein, in above-mentioned absorbent core, be formed with the pod extended at long side direction and the multiple translots extended in the direction intersected with this long side direction, in above-mentioned absorbent core, be formed with the multiple little absorbent portion of being surrounded by groove.

＜14＞

As the disposable diaper according to any one of < 1 > ~ < 13 >, wherein, above-mentioned outer-skin sheet 3 is the sheet of the non-skin opposite face (outer surface) forming above-mentioned diaper 1, and viewed from the non-skin opposite face side of this diaper 1, the plan view shape of this outer-skin sheet 3 has the shape consistent with the outer shape of this diaper 1.

＜15＞

As the disposable diaper according to any one of < 1 > ~ < 14 >, wherein, be the sheet that is made up of the resin molding of difficult liquid permeability as above-mentioned outer-skin sheet 3 or have any one of the sheet of non-woven fabrics at the non-skin opposite face side lamination adhesive of resin molding.

＜16＞

As the disposable diaper according to any one of < 1 > ~ < 15 >, wherein, above-mentioned positive dough sheet 2 is made up of the sheet of liquid permeability, width is narrower than the width of above-mentioned outer-skin sheet 3, is configured on the width central part of this outer-skin sheet 3.

＜17＞

As the disposable diaper according to any one of < 1 > ~ < 16 >, wherein, above-mentioned absorber 4 comprises absorbent core 40 and covers the core covering piece 41 of this absorbent core 40, 42, above-mentioned absorbent core 40 contains the granule of the fiber assembly be made up of the fibrous material of paper pulp fiber etc. and the water absorbent polymer kept by this fiber assembly, as this core covering piece 41, 42, for the thin paper of water penetration, any one of the non-woven fabrics of water penetration, this absorbent core 40 is formed as the plan view shape roughly the same with above-mentioned absorber 4.

＜18＞

As the disposable diaper according to any one of < 1 > ~ < 17 >, wherein, above-mentioned slot 7 is formed in a part for above-mentioned absorbent core 40, for there is not the part of the formation material of this absorbent core 40, be along the elongated shape of the long side direction of absorbent core when overlooking, this absorbent core 40 through in a thickness direction.

＜19＞

As the disposable diaper according to any one of < 1 > ~ < 18 >, wherein, the width W 7 of above-mentioned slot 7 is more than 3mm, is preferably more than 5mm, and be below 20mm, be preferably below 15mm.

＜20＞

As the disposable diaper according to any one of < 1 > ~ < 19 >, wherein, the grammes per square metre that there is not the formation material of the part forming material in above-mentioned slot is less than 1/10th of this grammes per square metre of other parts.

＜21＞

As the disposable diaper according to any one of < 1 > ~ < 20 >, wherein, the above-mentioned shape being configured to the embossing group of loose point-like when overlooking be rectangle, square, Elliptical circle any number of.

＜22＞

As the disposable diaper according to any one of < 1 > ~ < 21 >, wherein, in compression recess in above-mentioned embossing group, above-mentioned absorbent core 40 and the together densification by compressing in a thickness direction of core covering piece, the skin opposite face side of this absorbent core 40 is formed as concavity.

＜23＞

As the disposable diaper according to any one of < 1 > ~ < 22 >, wherein, the above-mentioned compression recess 81 being configured to loose point-like be interconnected or the shape at center that links adjacent compression recess to become in leg-of-mutton configuration pattern any number of.

＜24＞

As the disposable diaper according to any one of < 1 > ~ < 23 >, wherein, the mutual distance of above-mentioned compression recess 81 is more than 1mm, be preferably more than 2mm, and, for below 4mm, be preferably below 3mm.

＜25＞

As the disposable diaper according to any one of < 1 > ~ < 24 >, wherein, the full-size of the plan view shape of above-mentioned compression recess 81 is more than 1mm, be preferably more than 2mm, and, for below 4mm, be preferably below 3mm.

＜26＞

As the disposable diaper according to any one of < 1 > ~ < 25 >, wherein, the part that above-mentioned compression recess 81 in above-mentioned embossed area is overlapping with above-mentioned slot 7, also forms embossed portion with the configuration pattern same with the other parts in above-mentioned embossing group.

＜27＞

As the disposable diaper according to any one of < 1 > ~ < 26 >, wherein, in above-mentioned absorbent core 40, the area Sa of side more forward than above-mentioned long side direction Central Line C4 is less than 1.22 with the ratio (Sa/Sb) than this long side direction Central Line C4 area Sb of side rearward, be preferably less than 1.50, further, be more than 0.96, be preferably more than 1.00.

＜28＞

As the disposable diaper according to any one of < 1 > ~ < 27 >, wherein, the position of the long side direction Central Line C4 of above-mentioned absorbent core 40 leaves more than 10mm below 40mm at the long side direction Central Line C1 from above-mentioned diaper to front side, in addition, the position of the long side direction Central Line C7 of above-mentioned slot leaves more than 30mm below 70mm at the long side direction Central Line C4 from this absorbent core 40 to front side.

＜29＞

As the disposable diaper according to any one of < 1 > ~ < 28 >, wherein, in above-mentioned absorbent core 40, the ratio tightening up the Breadth Maximum of the relative veutro wide width part 40a of the width W c of the minimum widith portion Cs of portion 40c is less than 0.93, be preferably less than 0.90, and, be more than 0.70, be preferably more than 0.80, in absorbent core 40, the ratio tightening up the Breadth Maximum of opposing back side's wide width part 40b of the width W c of the minimum widith portion Cs of portion 40c is less than 0.93, be preferably less than 0.90, and, be more than 0.70, be preferably more than 0.80.

＜30＞

As the disposable diaper according to any one of < 1 > ~ < 29 >, wherein, both side edges 40s, the 40s of portion of the tightening up 40c of above-mentioned absorbent core are formed as buckling curve shape recessed to the inside, tighten up in the both side edges 40s of portion 40c, 40s, the bending degree of side more forward than the minimum widith portion Cs tightening up portion 40c is greater than the bending degree than minimum widith portion Cs side rearward.

＜31＞

As the disposable diaper according to any one of < 1 > ~ < 30 >, wherein, above-mentionedly tighten up in portion 40c, the length of the long side direction X of absorbent core 40 is more than 30% relative to the total length L4 of the long side direction X of absorbent core 40, is preferably more than 40%, and is less than 70%, be preferably less than 60%, in addition, be 30 ~ 70%, be preferably 40 ~ 60%.

＜32＞

As the disposable diaper according to any one of < 1 > ~ < 31 >, wherein, the total length L7 of above-mentioned slot 7 is more than 20% of the total length L of the long side direction of diaper 1, be preferably more than 30%, and, be less than 45%, be preferably less than 40%, in addition, be 20 ~ 45%, be preferably 30 ~ 40%, in addition, about above-mentioned slot 7, the distance of the long side direction Central Line C7 from the end 40d of the front side of absorbent core 40 to above-mentioned slot 7 is more than 15% of the total length L4 of above-mentioned absorbent core 40, be preferably more than 20%, and, be less than 45%, be preferably less than 40%, in addition, be less than more than 15% 45%, be preferably less than more than 20% 40%.

＜33＞

As the disposable diaper according to any one of < 1 > ~ < 32 >, wherein, about above-mentioned slot 7, the distance of the end 7b from the end 40d of the front side of above-mentioned absorbent core 40 to the rear side of slot 7 is more than 40% of the total length L4 of above-mentioned absorbent core 40, be preferably more than 45%, and, be less than 60%, be preferably less than 50%, in addition, be less than more than 40% 60%, be preferably less than more than 45% 50%, in addition, the end 7a of the front side of this slot 7 does not arrive the end 40d of the front side of this absorbent core 40.

＜34＞

As the disposable diaper according to any one of < 1 > ~ < 33 >, wherein, in the slot 7 formed in above-mentioned absorbent core 40, in the part overlapping with this slot 7, the upper-side core covering piece 41 in the skin opposite face side of above-mentioned absorbent core 40 and the state being formed as disengaged or leaving between the lower-side core covering piece 42 of non-skin opposite face side.

＜35＞

As the disposable diaper according to any one of < 1 > ~ < 34 >, wherein, above-mentioned absorbent core 40 comprises the granule of the fiber assembly be made up of the fibrous material of paper pulp fiber etc. and the water absorbent polymer kept by this fiber assembly, as the fibrous material forming fiber assembly, use paper pulp fiber, staple fibre, yarn fiber, the hydrophilic fibre of cellulose acetate etc., polyethylene, the polyolefin fibrids of polypropylene etc., polyester, the condensation fibrid etc. of polyamide etc., as the granule of water absorbent polymer, use containing sodium polyacrylate, (acrylic acid-ethylene alcohol) copolymer, sodium polyacrylate crosslinked, (Starch with Acrylic Acid) graft copolymer, (isobutyiene-maieic anhydride) copolymer and alkali compound thereof, the granule etc. of poly-aspartate etc.

＜36＞

As the disposable diaper according to any one of < 1 > ~ < 35 >, wherein, above-mentioned absorbent core contains water absorbent polymer and paper pulp fiber, the quality of this paper pulp fiber is more than 25% relative to the ratio of the gross mass of this absorbent core, the quality of paper pulp fiber is preferably more than 30% relative to the ratio of the gross mass of absorbent core, and be less than 70%, be preferably less than 60%, be preferably 25 ~ 70%, be more preferably 30 ~ 60%, the total quality of paper pulp fiber and water absorbent polymer is 90 ~ 100% relative to the ratio of the gross mass of absorbent core, be preferably 95 ~ 100%.

＜37＞

As the disposable diaper according to any one of < 1 > ~ < 36 >, wherein, in above-mentioned absorber 4, above-mentioned absorbent core 40 is covered by the core covering piece 41,42 that diffusibility is high, about this core covering piece, Ke Liemu water absorption is more than 0.2g/30sec15mm, is preferably the scope of 0.2 ~ 0.4g/30sec15mm.

＜38＞

As the disposable diaper according to any one of < 1 > ~ < 37 >, wherein, the core covering piece 42 of the downside of the core covering piece 41 covering the upside of the skin opposite face side of above-mentioned absorbent core 40 and the non-skin opposite face side covering absorbent core 40 is point other sheet, the core covering piece 42 at least covering non-skin opposite face side is the sheet that diffusibility is high, for employing the paper pulp sheet of large volume cellulose fiber peacekeeping non-bulky cellulose fibre in the lump.

＜39＞

As the disposable diaper according to any one of < 1 > ~ < 38 >, wherein, in above-mentioned absorbent core 40A, compression recess 82 in above-mentioned linear embossments row 8A is also same with the compression recess 81 in embossed area 8, the core covering piece 41 of above-mentioned upside and this absorbent core 40 are heated integratedly and pressurize and formed, compression recess 82 in these linear embossments row 8A is not formed as loose point-like, configure discontinuously in the mode forming string, compression recess 82 also specific pressure puncture portion 81 to each other, portion concave beyond 82, linear embossments row 8A is formed as the groove shape be made up of the compression recess 82 of interruption configuration and the female between them, in compression recess 82 for the formation of linear embossments row 8A, the full-size of each compression recess 82 is more than 1mm below 4mm, be preferably more than 2mm below 3mm, in addition, compression recess 82 adjacent on the long side direction of linear embossments row 8A to each other be spaced apart more than 0.5mm below 3mm, be preferably more than 1mm below 2mm.

＜40＞

As the disposable diaper according to any one of < 1 > ~ < 39 >, wherein, in above-mentioned absorbent core 40 ', not only there is above-mentioned slot 7, also there is the pod 7A and translot 7B that are different from slot 7, these pods are through absorbent core 40 ' all in a thickness direction, in absorbent core 40 ', in the region of side more forward than the long side direction Central Line C4 of absorbent core 40 ', be formed with the pod 7A extended on long side direction X, 7A and the multiple translot 7B extended on the direction Y intersected with this long side direction X, at this absorbent core 40 ', form the multiple little absorbent portion 75 of being surrounded by groove, pod 7A is respectively formed with one respectively in the both sides of slot 7 of the central authorities being configured at width Y, translot 7B is formed multiple in the region of the forward side of C4, long side direction Central Line than absorbent core 40 ', these translots 7B intersects with slot 7 crosswise of central authorities respectively, and across central authorities slot 7 respectively with the pod 7A being positioned at its both sides, 7A links.

＜41＞

As the disposable diaper according to any one of < 1 > ~ < 40 >, wherein, above-mentioned embossed area 8 is gone to the end of the front side of absorbent core, the stepped expansion of its width, or its width also can expand continuously gradually, in addition, also can make to be positioned at the part of tightening up portion 40c different with the partial width being positioned at veutro wide width part 40a, the width of the part being positioned at veutro wide width part 40a is made to be 1.1 times ~ 2 times of the width being positioned at the part of tightening up portion 40c, in addition, in above-mentioned linear embossments row 8A, forming across above-mentioned slot 7 end that the distance between these linear embossments row 8A of a pair is formed as from embossed area 8 to the front side of absorbent core 40 in its both sides goes to one end to expand, be formed as afterwards being parallel to each other, or the distance between the linear embossments row 8A being formed as formation a pair is parallel to each other in the total length from the end of embossed area 8 side to the end of the front side of above-mentioned absorbent core 40.

＜42＞

As the disposable diaper according to any one of < 1 > ~ < 41 >, wherein, the top view shapes of above-mentioned embossed area is rectangular-shaped, circular, that Elliptical is circular arbitrary shape, in addition, at the compression recess 81 that embossed area is formed, form the top view shapes that the compression recess 82 of linear embossments row is respective, replacing circular, can be the arbitrary shape of Elliptical circle, tetragon, star.

＜43＞

As the disposable diaper according to any one of < 1 > ~ < 42 >, it is the disposable diaper of deploying type.

＜44＞

Disposable diaper as described in < 43 >, wherein, has leg creases and three-dimensional fold.

＜45＞

Manufacture the manufacture method of the disposable diaper of the disposable diaper according to any one of above-mentioned < 1 > ~ < 44 >,

Embossed area 8 is cover the duplexer that obtains of absorbent core 40 by between knurling rolls and anvil roller by by core covering piece 41,42, above-mentioned knurling rolls possess at side face the pressurization part that embossing pin (the columned protuberance of embossing) formed with the configuration pattern of loose point-like, are pressurizeed and heat and formed by this duplexer with embossing pin from upper-side core covering piece 41 side.

＜46＞

The manufacture method of the disposable diaper as described in < 45 >, wherein, absorbent core 40 is through the parts fibrous material being loaded in the supply of air stream being attracted to the long-pending fine operation of piling up in the long-pending fibre recess of regulation shape and obtaining, fibrous material and water absorbent polymer are loaded in air stream supply, pile up for the stacking states of the regulation of admixture etc. and manufacturing, slot 7 is formed by the protuberance of the non-ventilating of the shape corresponding with slot 7 of setting in the long-pending fibre recess of long-pending fibre drum etc.

＜47＞

The using method of the disposable diaper according to any one of above-mentioned < 1 > ~ < 44 >,

Be worn on wearer to use, dress in a manner described below, that is: the position of portion of the urinating P that the urine that wearer is discharged when urinating directly is supplied to is overlapping with slot 7, or staggers from the position of slot 7 and overlapping with embossed area 8 in the position of portion of the urinating P be directly supplied to the urine of discharging.

[embodiment]

Below, use embodiment to further illustrate this utility model, but this utility model is not by so any restriction of embodiment.

(embodiment 1)

Manufacture the absorber possessing the absorbent core 40 of mode shown in Fig. 3.Absorbent core 40, as the slim formation of mixed product of paper pulp fiber and water absorbent polymer, makes the ratio of paper pulp fiber be 40 quality %.As paper pulp fiber, use common fluff pulp (fluff pulp, Time of Fluff Slurry).Long-pending fine time, the part of not bulk paper pulp fibres etc. is set in a part, forms the absorbent core with slot.As cover absorbent core 40 skin opposite face side upside core covering piece, cover the core covering piece of the downside of non-skin opposite face side, use following material.To the duplexer across the structure of absorbent core between upper and lower core covering piece, the pin embossing device possessing knurling rolls and anvil roller is used to carry out heat embossing processing, above-mentioned knurling rolls possess the pressurization part at side face with multiple embossing pin, obtain the absorber with embossed area.

The core covering piece of upside: grammes per square metre 13.5g/m ²tissue paper

The core covering piece of downside: grammes per square metre 13.5g/m ²tissue paper

The area of embossed area is 33.6cm ², and for absorbent core overlook 8% of gross area.In addition, the distance a ~ d compressing recess mutual is 4mm, and each compression recess is circle when overlooking, and diameter (full-size) is 2mm.

Above-mentioned absorber is clipped between positive dough sheet and outer-skin sheet, engages between two panels around absorber, obtain the diaper evaluated.Represent the size of each several part of the diaper of the evaluation obtained in Table 1.

In addition, following material is used as positive dough sheet and outer-skin sheet.

Positive dough sheet: grammes per square metre 36g/m ²hot-wind nonwoven cloth

Outer-skin sheet: grammes per square metre 20g/m ²polyethylene film pieces

(embodiment 2)

When utilizing heat embossing to be processed to form embossed area, together forming the linear embossments shown in Fig. 7 with embossed area and arranging, in addition, operating similarly to Example 1, manufacture the diaper evaluated.Represent the size of each several part of the diaper of the evaluation obtained in Table 1." ← " in table 1 represents the meaning identical with left side.

(comparative example 1)

Except not formed except embossed area, operating similarly to Example 1, manufacturing the diaper evaluated.Represent the size of each several part of the diaper of the evaluation obtained in Table 1.

(comparative example 2)

The rear side of the allocation position of the absorber between positive dough sheet and outer-skin sheet to diaper is staggered, make the position consistency of the position of the long side direction Central Line of absorbent core and the long side direction Central Line of diaper, and shorten the length of slot, converge between the end of the long side direction Central Line of diaper and the front side of absorbent core to make the total length of slot, in addition, operate similarly to Example 1, manufacture the diaper evaluated.Represent the size of each several part of the diaper of the evaluation obtained in Table 1.

(evaluation)

Utilize following method to measure and return liquid measure and liquid diffusion area, in table 1, Fig. 9 (photo), represent its result.

(returning liquid measure)

On the flat board tilted with 5 °, large area region side is made to be the diaper that inclination lower end side fixes each evaluation of embodiment and comparative example.The acrylic panel possessing the injecting tube (the internal diameter 36mm at the inlet of lower surface opening) of the cylindrical shape of internal diameter 36mm is loaded in the mode being centrally located at the central part of the width of the absorbent core of the position leaving 50mm from the long side direction centrage C1 of diaper to front side of inlet, divides injected 40g every 10 minutes 3 times by being colored as red artificial urine 120g in this injecting tube.In Fig. 9, P express liquid decanting point.After injection for the third time terminates, place 10 minutes, collagem membrane (Naturin company, trade name COFFIJ) is cut into the square of elongated 70mm, overlapping mounting 4.Mounting heavy burden thereon forms the pressure of 7kPa again, pressurizes 30 seconds.After pressurization, take out collagem membrane, measuring the weight of the collagem membrane before and after pressurization, calculating the weight of the liquid absorbed in collagem membrane, as returning liquid measure.

(liquid diffusion area)

After the mensuration returning liquid measure terminates, on positive dough sheet, place OHP film at once, write the profile of the part of positive dough sheet redness diffusion.Use can measure special-purpose software (Image-ProPlus:(strain) the Japanese ROPER Inc. of the area inside this profile), read in the image of ohp film write in computer with scanner, obtain liquid diffusion area.

[table 1]

According to the result shown in table 1, can think that the large-area front area being formed with slot that the diaper of embodiment 1,2 can make the urine of discharge in absorbent core is spread efficiently, if considered with reference to the photo shown in figure 9, can think, diffused to the corner of absorbent core by liquid in embodiment, by relaxing liquid easily in the tendency of being detained a little and returning liquid of urinating, returning liquid and also reducing.That is, be judged as effectively to utilize absorptive capacity, and to wearer skin to return liquid preventive excellent.

Photo shown in Fig. 9 represents that the diffusingsurface of the practical measurement sample of the liquid diffusion area shown in Table 1 of embodiment 1,2 and comparative example 1,2 is colored as red part, known, in an embodiment, throughout the end being formed with slot side of absorber and both sides diffusion, be formed as efficiently and fully effectively utilize the mode in the bight of all until absorbent core of absorbent core.

Industrial utilizability

Disposable diaper of the present utility model can make to spread efficiently in the large-area front area of the urine of discharge in absorbent core, effectively can utilize absorptive capacity, such as, to wearer skin to return liquid preventive excellent.

Claims

1. a disposable diaper, comprise the positive dough sheet of formation skin opposite face, form the non-outer-skin sheet of skin opposite face and the absorber between two panels, the feature of described disposable diaper is:

2. disposable diaper as claimed in claim 1, is characterized in that:

Described embossed area comprise be positioned at than described slot rear end part rearward and be positioned at the part of its left and right sides across this slot.

3. disposable diaper as claimed in claim 1, is characterized in that:

In described absorbent core, the width W a of the end on front side of long side direction is less than more than 0.9 1.1 relative to the ratio of the width W b of the end on rear side of long side direction.

4. disposable diaper as described in claim 1, is characterized in that:

The both side edges that described absorbent core is included in long side direction when overlooking forms the portion of tightening up of concavity and the veutro wide width part be positioned at before and after it and dorsal part wide width part to the inside, described in tighten up the minimum widith portion in portion width be less than 0.93 relative to the ratio of the Breadth Maximum of described veutro wide width part.

5. disposable diaper as claimed in claim 4, is characterized in that:

Described minimum widith portion of tightening up portion is positioned at the long side direction centrage side rearward than described absorbent core.

6. the disposable diaper as described in claim 4 or 5, is characterized in that:

Described both side edges of tightening up portion is formed as buckling curve shape recessed to the inside.

7. disposable diaper as claimed in claim 1, is characterized in that:

In described absorbent core, when the position of the long side direction Central Line of described diaper is divided into 2 parts in front and back, the quality of rear section is 40: 60 ~ 49: 51 relative to the mass ratio of front part.

8. disposable diaper as claimed in claim 1, is characterized in that:

In described absorbent core, when the position of the long side direction Central Line of described diaper is divided into 2 parts in front and back, the length of the long side direction of this absorbent core of rear section is 40: 60 ~ 49: 51 relative to the length ratio of the long side direction of this absorbent core of front part.

9. disposable diaper as claimed in claim 1, is characterized in that:

Described absorbent core contains water absorbent polymer and paper pulp fiber, and the quality of this paper pulp fiber is more than 50% relative to the ratio of the gross mass of this absorbent core.

10. disposable diaper as claimed in claim 1, is characterized in that:

Described absorber has the core covering piece of coated described absorbent core, and in described compression recess, this core covering piece and this absorbent core together cave in.

11. disposable diapers as claimed in claim 1, is characterized in that:

Compression recess is lined up the in upright arrangement linear embossments formed and is arranged the mode extended out with the end from described embossed area to the front side of described absorbent core and formed.

12. disposable diapers as claimed in claim 1, is characterized in that:

In described absorbent core, be formed with the pod extended at long side direction and the multiple translots extended in the direction intersected with this long side direction, in described absorbent core, be formed with the multiple little absorbent portion by groove or slot encirclement.

13. disposable diapers as claimed in claim 1, is characterized in that:

Described positive dough sheet is made up of the sheet of liquid permeability, and width is narrower than the width of described outer-skin sheet, is configured on the width central part of this outer-skin sheet.

14. disposable diapers as claimed in claim 1, is characterized in that:

Described absorber comprises described absorbent core and covers the core covering piece of this absorbent core, and described absorbent core contains the granule of the fiber assembly be made up of fibrous material and the water absorbent polymer kept by described fiber assembly,

Described core covering piece be the thin paper of water penetration, the non-woven fabrics of water penetration any one, this absorbent core is formed as the plan view shape roughly the same with described absorber.

15. disposable diapers as claimed in claim 1, is characterized in that:

Described slot is the part of formation material that be formed in a part for described absorbent core, that there is not this absorbent core, and described slot is along the elongated shape of the long side direction of this absorbent core, at the through absorbent core of thickness direction.

16. disposable diapers as claimed in claim 1, is characterized in that:

The width W 7 of described slot is more than 3mm and below 20mm.

17. disposable diapers as claimed in claim 1, is characterized in that:

Described slot is the part of the part being formed in described absorbent core, and the grammes per square metre of the formation material of this absorbent core in this part is less than 1/10th of this grammes per square metre of other parts.

18. disposable diapers as claimed in claim 1, is characterized in that:

Described absorber has the core covering piece of coated described absorbent core,

In in the described compression recess in the embossing group of loose point-like when being configured to overlook, described absorbent core and the together densification by compressing in a thickness direction of described core covering piece, the skin opposite face side of this absorbent core is formed as concavity.

19. disposable diapers as claimed in claim 1, is characterized in that:

The described compression recess being configured to loose point-like be interconnected or the shape at center that links adjacent compression recess become in leg-of-mutton configuration pattern any one.

20. disposable diapers as claimed in claim 1, is characterized in that:

In described absorbent core, the area Sa of side more forward than the long side direction Central Line of described absorbent core relative to the ratio than this long side direction Central Line area Sb of side rearward for being greater than 1.00 and being less than or equal to 1.22.

21. disposable diapers as claimed in claim 1, is characterized in that:

The position of the long side direction Central Line of described absorbent core is positioned at leaves more than 10mm below 40mm from the long side direction Central Line of described diaper to front side, further, the position of the long side direction Central Line of described slot is positioned at and leaves more than 30mm below 70mm from the long side direction Central Line of described absorbent core to front side.

22. disposable diapers as claimed in claim 4, is characterized in that:

The described width tightening up the minimum widith portion in portion is less than 0.90 relative to the ratio of the Breadth Maximum of described veutro wide width part and more than 0.70.

23. disposable diapers as claimed in claim 1, is characterized in that:

The both side edges that described absorbent core is included in long side direction when overlooking forms the portion of tightening up of concavity and the veutro wide width part be positioned at before and after it and dorsal part wide width part to the inside,

Described both side edges of tightening up portion is formed as buckling curve shape recessed to the inside,

Describedly tighten up in the both side edges in portion, be greater than the bending degree than side rearward, this minimum widith portion than described bending degree of tightening up the forward side, minimum widith portion in portion.

24. disposable diapers as claimed in claim 1, is characterized in that:

Describedly tighten up in portion, the length of the long side direction of described absorbent core is 30 ~ 70% relative to the total length of the long side direction (X) of described absorbent core.

25. disposable diapers as claimed in claim 1, is characterized in that:

The total length of described slot is 20 ~ 45% of the total length of the long side direction of described diaper, and, in described slot, the distance of the long side direction Central Line from the end of the front side of described absorbent core to this slot is less than more than 15% 45% of the total length of this absorbent core.

26. disposable diapers as claimed in claim 1, is characterized in that:

In described slot, the distance of the end of the rear side from the end of the front side of described absorbent core to this slot is less than more than 40% 60% of the total length of this absorbent core, and the end of the front side of described slot does not arrive the end of the front side of described absorbent core.

27. disposable diapers as claimed in claim 1, is characterized in that:

In the described slot that described absorbent core is formed, in the part overlapping with this slot, the upper-side core covering piece in the skin opposite face side of this absorbent core and be formed as disengaged or leave state between the lower-side core covering piece of non-skin opposite face side.

28. disposable diapers as claimed in claim 1, is characterized in that:

Described absorbent core contains water absorbent polymer and paper pulp fiber, the quality of this paper pulp fiber is less than more than 25% 70% relative to the ratio of the gross mass of this absorbent core, and the total quality of paper pulp fiber and water absorbent polymer is 90 ~ 100% relative to the ratio of the gross mass of this absorbent core.

29. disposable diapers as claimed in claim 1, is characterized in that:

In described absorber, described absorbent core is covered by the core covering piece that diffusibility is high, and the Ke Liemu water absorption of this core covering piece is more than 0.2g/30sec15mm.

30. disposable diapers as claimed in claim 1, is characterized in that:

In described absorber, described absorbent core is covered by core covering piece,

The core covering piece of the downside of the core covering piece covering the upside of the skin opposite face side of described absorbent core and the non-skin opposite face side covering this absorbent core is point other sheet, the core covering piece at least covering non-skin opposite face side is the sheet that diffusibility is high, and the core covering piece that liquid diffusibility is high is the paper pulp sheet simultaneously using large volume cellulose fiber peacekeeping non-bulky cellulose fibre.

31. disposable diapers as claimed in claim 11, is characterized in that:

In described absorbent core, the compression recess in described linear embossments row is also same with the compression recess in described embossed area, by heating integratedly described core covering piece and described absorbent core and pressurize and formed,

Compression recess in described linear embossments row is not formed as loose point-like, and configures discontinuously in the mode forming string, the portion concave of this compression recess to each other yet beyond specific pressure puncture portion,

Described linear embossments row are formed as the groove shape be made up of the compression recess configured discontinuously and the female between these compression recesses,

For the formation of in the compression recess that described linear embossments arranges, full-size of each compression recess is more than 1mm below 4mm, and, compression recess adjacent on the long side direction of described linear embossments row to each other be spaced apart more than 0.5mm below 3mm.

32. disposable diapers as claimed in claim 1, is characterized in that:

In described absorbent core, not only there is described slot, also there is the pod beyond this slot and translot,

Described pod is through described absorbent core all in a thickness direction, in described absorbent core, in the region of side more forward than the long side direction Central Line of described absorbent core, the multiple translots being formed with the pod that extends on long side direction and extending on the direction intersected with this long side direction

The multiple little absorbent portion of being surrounded by groove is formed at described absorbent core,

Described pod is respectively formed with one in the both sides of described slot of the central authorities being configured at width respectively,

Described translot is formed multiple in the region of the forward side, long side direction Central Line than described absorbent core, and these translots are that crosswise intersects with the described slot of central authorities respectively, and links respectively with the described pod that this slot across central authorities is positioned at its both sides.

33. disposable diapers as claimed in claim 11, is characterized in that:

Described embossed area, the end along with the front side to described absorbent core goes its width with stepped expansion, or its width expands continuously gradually, and,

The part of tightening up portion described in being positioned at is different with the width of the part being positioned at described veutro wide width part, makes the width of the part being positioned at described veutro wide width part for tightening up 1.1 times ~ 2 times of the width of the part in portion described in being positioned at, and,

Described linear embossments row are configured to, form the linear embossments row of a pair in its both sides across described slot, the linear embossments of described a pair arranges mutual distance and is formed as, one end is gone from described embossed area to the end of the front side of described absorbent core to expand, become afterwards and be parallel to each other, or the linear embossments of described a pair is listed in and is parallel to each other from the total length of end to the end of the front side of described absorbent core of described embossed area side.

34. disposable diapers as described in any of claims 11, is characterized in that:

The plan view shape of described embossed area is the arbitrary shape in rectangle, circle, Elliptical circle, the compression recess formed in embossed area or the compression recess plan view shape separately forming described linear embossments row be circular, Elliptical is circular, tetragon, arbitrary shape in star.

35. disposable diapers as claimed in claim 1, is characterized in that:

It is the disposable diaper of deploying type.