CN103957857B

CN103957857B - Absorbent commodity

Info

Publication number: CN103957857B
Application number: CN201280058565.4A
Authority: CN
Inventors: 石桥京子; 川口宏子; 内山泰树; 长原进介; 大西玲子
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2011-12-27
Filing date: 2012-12-13
Publication date: 2016-03-02
Anticipated expiration: 2032-12-13
Also published as: JP5869336B2; WO2013099624A1; JP2013132523A; CN103957857A; RU2550484C1; MY157549A

Abstract

The invention provides a kind of absorbent commodity, it has surface patch, back sheet and the absorber between two panels, it is outstanding and have the first protuberance of inner space that surface patch has first surface side to liquid supply side, and it is outstanding and there is the second protuberance of inner space to second side of the opposition side of first surface side, first protuberance, second protuberance alternately configures continuously along all directions of opticochiasmatic different directions of bowing within the scope of whole of this surface patch, there is the wall portion of ring-shaped structure between the top of the second protuberance and the peristome of this second protuberance, wall portion has fibre orientation on the direction linking the top of described second protuberance and the peristome of this second protuberance, absorber has the first amount portion, level ground, and level ground amount measures the second amount portion, level ground that is low and the first amount portion, level ground of encirclement than the level ground in the first amount portion, level ground, this absorber connects with the top of the second protuberance of surface patch and configures, and, this absorber has from back sheet lateral surface sheet side depression and with the recess of the second amount portion, level ground flute profile extended at least along its length that is bottom surface, the first adjacent protuberance, second protuberance at least partially with recess arrangement in the position opposite each other across the second amount portion, level ground.

Description

Absorbent commodity

Technical field

The present invention relates to a kind of absorbent commodity.

Background technology

The such absorbent commodity of sanitary napkin, protective pad, disposable diaper usually directly contacts with the skin of wearer and uses.In this case, be used for especially greatly as easily there is the coarse position of skin, and wear for a long time sometimes.Therefore, the article of skin contact sense excellence are expected.On the other hand, as basic function, liquid-absorbent and liquid retainability are required for this absorbent commodity.

As existing absorbent commodity, as shown in Figure 10, there is the structure of being furnished with flat surface patch 1 on absorber 3.

In patent documentation 1, disclose and to be made up of upper synusia and lower synusia and there is the surface patch that inside becomes multiple protuberances in cavity.In this surface patch, the bottom surface of raised part is rectangle, and protuberance entirety is rectangular-shaped or quadrangular pyramid mesa-shaped.

In addition, in patent documentation 2, disclose following surface patch: surface part or all in, multiple row ridge portion and groove portion alternate combinations, ridge portion convexly bends, and groove portion concavely bends, and groove portion is separated with compartment of terrain and is furnished with multiple aperture portion.There is at the circumference of this aperture portion the three-dimensional flank erected towards the back side from the surface of this surface patch.

In addition, in patent documentation 3, disclose the surface patch of following absorbent commodity: the configuration of skin side the first fibrous layer with to absorb the second fibrous layer that side configures stacked and carry out local engagement by the junction surface of predetermined pattern, the part beyond the first fibrolaminar described junction surface is in skin side formation convex.

At first technical literature

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2004-174234 publication

Patent documentation 2: Japanese Unexamined Patent Publication 09-299402 publication

Patent documentation 3: Japanese Unexamined Patent Publication 2004-000466 publication

Summary of the invention

The invention provides a kind of absorbent commodity, wherein,

Have: be configured in the surface patch of skin abutment face side, be configured in the back sheet of non-skin abutment face side and the absorber between described two panels,

It is outstanding and have the first protuberance of inner space that described surface patch has first surface side to liquid supply side, and it is outstanding and there is the second protuberance of inner space to second side of the opposition side of described first surface side, described first protuberance, described second protuberance alternately configures continuously along all directions of opticochiasmatic different directions of bowing within the scope of whole of this surface patch, there is the wall portion of ring-shaped structure between the top and the peristome of this second protuberance of described second protuberance, described wall portion has fibre orientation on the direction linking the top of described second protuberance and the peristome of this second protuberance,

Described absorber there is the first amount portion, level ground and level ground amount lower than the level ground amount in described first amount portion, level ground and surround the second amount portion, level ground in described first amount portion, level ground, this absorber connects with the top of the second protuberance of described surface patch and configures, and, this absorber has from surface patch depression described in described back sheet side direction and with the recess of described second amount portion, the level ground flute profile extended at least along its length that is bottom surface

Adjacent described first protuberance, described second protuberance at least partially with described recess arrangement in the position opposite each other across described second amount portion, level ground.

Above-mentioned and other feature of the present invention and advantage can be passed through suitably with reference to accompanying drawing, clear and definite further by following record.

Accompanying drawing explanation

Fig. 1 is the accompanying drawing of the preferably embodiment representing absorbent commodity of the present invention, (1) be the show in schematic partial sections of a part of the absorbent main body representing absorbent commodity, (2) are the show in schematic partial sections of the dimension measurement position of each several part of presentation surface sheet.

Fig. 2 is the contour map of the example that the preferred planar of the protuberance observed from first surface side of the surface patch involved by absorbent commodity representing the preferred embodiment of the present invention arranges.

Fig. 3 is the contour map of the variation of the plane figure of the protuberance observed from first surface side of the surface patch involved by absorbent commodity representing the preferred embodiment of the present invention.

Fig. 4 is the sectional view of a preferred example of the absorber representing absorbent commodity of the present invention.

Fig. 5 is the plane arranging figure of a preferred example of the absorber representing absorbent commodity of the present invention.

Liquid Fig. 6 is less to the liquid be supplied on surface patch in absorbent commodity of the present invention moves the schematic configuration sectional view represented.

Liquid Fig. 7 is more to the liquid be supplied on surface patch in absorbent commodity of the present invention moves the schematic configuration sectional view represented.

Fig. 8 is that liquid when increasing further the liquid be supplied on surface patch in absorbent commodity of the present invention moves the schematic configuration sectional view represented.

Fig. 9 is the axonometric chart of the preferably embodiment representing Briefs type articles for wearing of the present invention.

Figure 10 is the accompanying drawing representing the surface patch of prior art and an example of absorber, and (1) is exploded perspective view, and (2) are sectional views.

Detailed description of the invention

The present invention relates to a kind of liquid permeability for improving the irregular surface patch of tool and improve the absorbent commodity of the liquid diffusibility in absorber.

With reference to Fig. 1 ~ Fig. 5, below a preferably embodiment of absorbent commodity of the present invention is described.It should be noted that, each structure member label symbol is described.

As shown in Figure 1, absorbent commodity of the present invention has the basic structure of following explanation.Namely, possess absorbent main body 4, this absorbent main body 4 have the liquid permeability in the configuration of skin abutment face side surface patch 1, at the back sheet 2 of the opaque liquid of non-skin abutment face side configuration and the absorber with liquid retainability between surface patch 1 and back sheet 2 (also referred to as absorbent core.)3。

The material that above-mentioned absorbent main body 4 can use usual this kind of diaper etc. to use, is not particularly limited.

Surface patch 1 is preferably formed by liquid permeability non-woven fabrics.As liquid permeability non-woven fabrics, for being referred to as the non-woven fabrics of hot-wind nonwoven cloth, some bonded nonwoven, spun-bonded non-woven fabrics, spun-laced nonwoven fabric, stereo type non-woven fabric, its fiber preferably uses polyacrylic ultimate fibre, polypropylene and poly composite fibre, polyethylene terephthalate and poly composite fibre etc. to implement the fiber of hydrophilicity-imparting treatment.

As long as above-mentioned back sheet 2 has water proofing property and has poisture-penetrability, be not particularly limited.Such as can enumerate following porous film: melting mixing carried out to hydrophobic thermoplastic resin and the small inorganic filler to be made up of calcium carbonate etc. or the organic polymer etc. without intersolubility and forms thin film, being extended along single shaft or twin shaft and obtain above-mentioned porous film by this thin film.As thermoplastic resin, polyolefin can be enumerated.As this polyolefin, high density or Low Density Polyethylene, wire Low Density Polyethylene, polypropylene, polybutene etc. can be enumerated, above-mentioned material can be used alone or as a mixture.

In absorber 3, such as, can use fiber assembly or share the material etc. of this fiber assembly and absorbable polymer.As the fiber forming fiber assembly, the hydrophilic natural fibers such as paper pulp fiber, synthetic fibers (preferably implementing the fiber of hydrophilicity-imparting treatment) etc. can be used.Level ground amount is not particularly limited, and is preferably 150g/m ²above and 500g/m ²below.Also the emulsion sheet covering absorber 3 can be used.As this emulsion sheet, the thin papers such as hydrophilic napkin (tissue paper), the non-woven fabrics be made up of hydrophilic fibres such as cotton or artificial silks can be used, the fiber of synthetic resin is implemented to the non-woven fabrics of hydrophilicity-imparting treatment compound nonwoven cloths such as () spunbond-melt blown-spunbond (SMS), spunbond-meltblown-meltblown-spunbond (SMMS), spunbond-spunbond-meitblown-spunbond (SSMS) etc.

Below, the detailed content of above-mentioned surface patch 1 is described.

Surface patch 1, within the scope of its whole, separates predetermined distance and is configured with to the first outstanding protuberance 11 of first surface (surface) the side Z1 of liquid supply side and second protuberance 12 outstanding to second (back side) side Z2 of the opposition side of this first surface side Z1.The plane of this first, second protuberance 11,12 arranges routine detailed content and sees below.Preferred above-mentioned first surface side Z1 is towards the side, flesh face of wearer, and above-mentioned second side Z2 is configured in absorber 3 side of absorbent commodity inside.Below, suppose that the embodiment that first surface side Z1 carries out using towards the flesh face of wearer is described.

Above-mentioned second protuberance 12 top 12T (following, also referred to as the second top 12T.) and its peristome 12H between there is wall portion 13.This wall portion 13 forms ring-shaped structure in the second protuberance 12.The fiber forming wall portion 13 mainly has fibre orientation on the direction of the edge part of link second top 12T and its peristome 12H (the double-head arrow direction shown in Fig. 1).In other words, have from the second top 12T radial fibre orientation such toward the outer side.Thus, fiber with in the scope of the second protuberance 12 from wall portion 13 along the mode orientation that the direction, face in the face of this sheet is shunk towards the second top 12T.Like this, by having from the radial toward the outer side fibre orientation of the second top 12T, to liquid transfer described later, there is driving effect, and there is excellent resiliency.In other words, first, second protuberance 11,12 has excellent liquid permeability, even and if realize the effect that also easily recovery is such that deforms that not easily crumbles.

In addition, the top 11T of wall portion 13 and the first protuberance 1 is (hereinafter also referred to as the first top 11T.), that the top 12T of the second protuberance 12 compares fibre weight is less.In addition, first, second top 11T, 12T is higher with wall portion 13 phase specific density.It should be noted that, fibre weight the changing greatly in tiny area of the irregular surface patch 1 of the formation in the present invention, therefore be difficult to determine, the fibre weight of wall portion 13 and first, second top 11T, 12T can by measure fiber spacing from and infer relative size.Specifically, because fiber spacing diminishes from ratio when increasing shared by fiber, therefore with fiber spacing from compared with shorter structure, fibre weight reduces.

In addition, by the thickness at each minute sites place of meter dough sheet 1, the height of density relatively can be compared according to the supposition size of thickness and fibre weight.Relative to the size utilizing fiber spacing from the fibre weight relatively judged, the state of fiber overlap can be evaluated according to the observation of thickness direction for being close to (thinner thickness) or being separated (thickness is thicker).Specifically, utilize fiber spacing from inferring as follows: the volume of the cylinder launched in a thickness direction by the cavity of comparing the circle that fiber surrounds, can density be carried out relatively, fiber spacing from for diameter and thickness to be the volume of a cylinder of height larger, then density is lower.

In absorbent commodity of the present invention, the fiber spacing in wall portion 13 impacts to the penetration by liquid difficulty or ease of surface patch during a large amount of absorption, the fiber spacing of wall portion 13 from and the stability of thickness to structure impact.It should be noted that, fiber spacing sees below from the preferable range with thickness.

Below, the concrete shape example of first, second protuberance 11,12 above-mentioned is described.

First, second top 11T, 12T are formed as the frustum of a cone or the hemisphere with fillet.In more detail, the outstanding shape of the first protuberance 11 is sharp-pointed and closer to hemisphere, on the other hand, the outstanding shape of the second protuberance 12 becomes more sharp-pointed and has circular cone or the frustum of a cone of fillet at top.In the present embodiment, the shape of first, second protuberance 11,12 is not limited to above-mentioned shape, also can be give prominence to form arbitrarily.Such as, various cone shape can be adopted.Such as, the cone shape in this description extensively comprises circular cone, the frustum of a cone, pyramid, the frustum of a pyramid, oblique cone etc.

First, second protuberance 11,12 above-mentioned has inner space 11S, 12S of similar to its profile, have fillet at top the frustum of a cone or hemisphere.Each inner space 11S, 12S are separated by the rib portion 14 of the first top 11T linking the first adjacent protuberance 11, form discontinuous space.

On the other hand, as mentioned above at each top 11T, 12T of first, second protuberance 11,12 and between each peristome 11H, 12H, be configured with wall portion 13, formed and construct to make first, second protuberance 11,12 continuous print sheet via this wall portion 13 and above-mentioned rib portion 14.

Surface patch 1 entirety (the first 11T ~ the second top, top 12T) in the present invention apparent on thickness (following for sheet apparent thickness t10) be not particularly limited, but from viewpoint absorbent commodity being given to good buffering sense, for more than 1.0mm and below 9.0mm, be preferably more than 1.5mm and below 7.0mm, be more preferably more than 2.0mm and below 6.0mm.In addition, from the viewpoint having resiliency and smoothness concurrently, from the first top 11T to the apparent thickness (the apparent thickness t11 of the first top 11T) of the first protuberance 11 extreme lower position in rib portion 14 for more than 0.1mm and below 3.0mm, be preferably more than 0.3mm and below 2.5mm, be more preferably more than 0.5mm and below 2.0mm.The second protuberance 12 between the top 12T (from rib portion 14 to the second top 12T) being positioned at wall portion 13 and the second protuberance becomes the cup-shaped impaled by wall portion 13, the apparent thickness of the second protuberance 12 in this shape (being cup portion height H c below) is for more than 0.5mm and below 8.0mm, be preferably more than 0.7mm and below 7.0mm, be more preferably more than 1.0mm and below 5.0mm.

About the thickness of the surface patch at the first top 11T, the second top 12T and wall portion 13 each several part place, wall portion 13 is thinner compared with the first top 11T and the second top 12T, the thickness t111 of the first top 11T is more than 0.5mm and below 2.0mm, in addition, the thickness t131 at the position in the face 1/3 of the distance skin side of wall portion 13 is more than 0.1mm and below 0.7mm, and the thickness t132 at the position in the face 2/3 of distance skin side is 0.5mm ~ 1.0mm.Now, when large quantity of fluid such as disposable excretion urine, liquid is transferred to absorber 3 from the second top 12T, thus the amount that liquid transmits from cup portion spilling to absorber 3 is many overwhelmingly, and therefore the thickness t121 of the second top 12T is less on impact during the large quantity of fluid of transfer.On the other hand, cup portion can not crumble under stress.Namely, from the viewpoint of form trait, by making the thickness (thickness t132) of the cup portion bottom of wall portion 13 (in this case 1/3 position of the top 12T of distance second protuberance 12 of apparent thickness (cup portion height H c)) be in above-mentioned scope, thus form the necessary fibrous structure of form trait.

In addition, in the first top 11T and wall portion 13, the size in the orientation of fiber when overlooking, interfibrous gap (fiber spacing from) is different.The mode of the angle 0 ° when the fibre orientation measured by method described later is to measure the MD direction of surface patch 1 as orientation for the first top 11T is measured.At this, MD direction refers to, carries the direction (MachineDirection) of each and absorbent commodity etc. during fabrication.When orientation is measured, MD direction and " plane " when overlooking are roughly synonym.When position as shown in Figure 2, the orientation angles in the wall portion 13 adjacent along the direction orthogonal with MD orientation of the first top 11T is by being set to 90 ° and obtain orientation angles by the imaginary line direction of link first top 11T and the second top 12T.Orientation angles in above-mentioned wall portion 13 when from more than 0 ° and less than 360 ° corrections (conversion) be more than 0 ° and the angular range of 180 °, there is the orientation angles of such (imaginary line direction ± 30 ° about the within) fiber in imaginary line direction along link first top 11T and the second top 12T.

For the measurement of the orientation in wall portion 13, compared with the position connected along MD direction of meter dough sheet 1, measure the change that fibre orientation is more easily observed in the direction of staggering with MD direction.Therefore, the wall portion 13 adjoined with the first top 11T is when configuring as shown in figure 3, and the mode being set to 90 ° using part link first top 11T and the imaginary line of the second top 12T and the intersecting angle in MD direction being positioned at 90 ° ± 45 ° of directions as object and by the direction of the imaginary line of link first top 11T and the second top 12T carries out the measurement of fibre orientation described later.

In addition, the orientation intensity of wall portion 13 is more preferably more than 1.05.About the orientation intensity of the first top 11T, there is no special provision, but more expect lower than wall portion 13.By making orientation angles top 11T, 12T under above-mentioned adjacent position different from wall portion 13, in wall portion 13, fiber is with the mode orientation of shrinking to the second 12T side, top.In addition, by making the orientation intensity of wall portion 13 high, when liquid being drained in a large number and making the fiber of wall portion 13 moisture, fiber interval each other can be made to open, liquid is handed off to absorber 3 quickly.From the viewpoint of smoothness, the average fiber spacing in the first top 11T is preferably more than 1 μm and less than 40 μm, is more preferably more than 5 μm and less than 30 μm.In addition, the average fiber spacing in wall portion 13 is greater than the first top 11T, the viewpoint passed through from making liquid, is preferably more than 10 μm and less than 100 μm, is more preferably more than 15 μm and less than 80 μm.In addition, from maintain wall portion 13 structure viewpoint, absorb large quantity of fluid time internally movement in the 12S of space viewpoint, the fiber spacing of more than 40 μm from number ratio be preferably more than 5% and less than 50%, be more preferably more than 5% and less than 30%.

It should be noted that, the orientation of the fiber of the first protuberance 11 and the second protuberance 12 manufactures in the net formation of utilization based on common combing method and the non-woven fabrics based on method for makings such as hot blasts, the length direction had along non-woven fabrics arranges the orientation angles of such fiber, and orientation intensity can get more than 1 according to object and the scope of less than 1.7.That is, when orientation comparatively strong (orientation intensity is higher) of fiber the arrangement vector of fiber towards orientation angles direction.That is, due to more fiber orientation orientation angles direction, the movement therefore adding man-hour becomes easily stable.On the contrary, when the orientation intensity of fiber is lower, the direction dispersion of fiber, can be set as that the strength ratio of length direction and width is close to 1, obtains the balance of intensity usually.Usually, from the view point of the winding difficulty or ease of fiber, implement to curl to fiber, non-woven fabrics arranges along its length and also easily has random orientation thus, shows the orientation angles of 0 ° ± about 50 ° relative to length direction.

On the other hand, the wall portion 13 of the surface patch 1 in the present invention has nothing to do with the orientation angles of the fiber of first, second protuberance 11,12, or the angle larger from the fibre orientation Angulation changes of first, second protuberance 11,12 and there is in the second protuberance 12 direction orientation, thus realize described effect.

Next, with reference to Fig. 2 and Fig. 3, example is arranged to the preferred planar of first, second above-mentioned protuberance 11,12 and is described.

As shown in Figure 2, arrange in example first, within the scope of whole of surface patch 1, first, second protuberance 11,12 above-mentioned be configured to as opticochiasmatic different directions of bowing within the scope of whole of surface patch 1, first direction X and second direction Y goes up alternately continuous separately.The angle of the crossing of this first direction X and second direction Y is preferably 30 ° ~ 90 ° (orthogonal), and illustrated example is 90 °.Further, rib portion 14 is formed between the first adjacent protuberance 11.

It should be noted that, the arrangement form of first, second protuberance 11,12 above-mentioned is not limited to the structure shown in described Fig. 2.Such as shown in Fig. 3, also the second protuberance 12 can be configured six the first protuberances 11 as center on hexagonal summit, this patterning Zone Full in the face of surface patch 1 is arranged.In this case, the quantity of the first protuberance 11 exceeds the quantity of the second protuberance 12, therefore the state that the first protuberance 11 is adjacent to each other is produced, as long as but overall formation continuous print sheet state, owing to alternately configuring continuously going up separately as first direction X, the second direction Y of opticochiasmatic different directions of bowing and third direction W, therefore the arrangement of above-mentioned form arranges in such meaning with being also contained in the first protuberance 11 and the second protuberance 12 " replacing ".

The surface patch 1 with first, second protuberance 11,12 arranged as described above does not have bending section, is made up of overall continuous print curved surface.

So, above-mentioned surface patch 1 preferably has continuous print structure on direction, face." continuously " should refer to that not there is interrupted part and aperture.But the such micro hole in interfibrous gap is not contained in above-mentioned aperture.It is more than 1mm when being equivalent to diameter of a circle that above-mentioned aperture can be defined as such as its aperture.

Next, be described with reference to the preferred structure example of Fig. 4 and described Fig. 1 to above-mentioned absorber 3.

Above-mentioned absorber 3 there is amount portion, continuous print second level ground 32 and level ground amount is impaled by the second amount portion, level ground 32 higher than the first amount portion, level ground of amount portion, level ground 31, first 31 in this amount portion, the second level ground 32.In addition, have the recess 33 of the second amount portion, level ground 32 as the channel-shaped extended at least along its length of bottom surface from back sheet 2 lateral surface sheet 1 side depression.This recess 33 is configured in back sheet 2 side contrary with surface patch 1 side of absorber 3, and a part and the recess 33 of first, second adjacent protuberance 11,12 are configured in across absorber 3 position opposite each other.Above-mentioned second amount portion, level ground 32 is configured to amount portion, encirclement first level ground 31, and the back sheet side in the second amount portion, level ground 32 between the first amount portion, level ground 31 is configured with the recess 33 of channel-shaped.Thus, absorber 3 is configured to the first amount portion, level ground 31 and is thicker than the second amount portion, level ground 32.Further, the face of the absorber 3 of surface patch 1 side (on the upside of accompanying drawing) roughly becomes tabular surface.Other first amount portion, level ground 31 is higher with the second amount portion 32, level ground phase specific density.The preferable range of density is not particularly limited, but the first amount portion, level ground 31 is preferably in 0.03g/cm ³above and 0.50g/cm ³following scope, is more preferably in 0.05g/cm ³above and 0.40g/cm ³following scope, is preferably in 0.07g/cm further ³above and 0.30g/cm ³following scope, the second amount portion, level ground 32 is preferably in 0.01g/cm ³above and 0.15g/cm ³following scope, is more preferably in 0.03g/cm ³above and 0.12g/cm ³following scope.

So, because recess 33 is configured at absorber 3 from back sheet 2 side of the opposition side of surface patch 1 side, therefore the liquid supplied to the surface of surface patch 1 is transferred to the inner space 11S of the first protuberance 11 from the second protuberance 12, absorbed from surface patch 1 side by absorber 3.And, from the second amount portion, level ground 32 of absorber 3 directly or import to recess 33 from the second amount portion, level ground 32 by the first amount portion 31, level ground wall, transfer to recess 33.Like this, the liquid temporarily importing to the second amount portion, level ground 32 is absorbed a certain amount of at this, is not transferred to recess 33 by the amount absorbed in addition.If when recess 33 is configured at surface patch 1 side, liquid is directly transferred to recess, does not enter the overflow of recess completely and become the key factor of leakage.Thus, opposition side recess 33 being configured in surface patch 1 is expected.

In addition, the absorber 3 of surface patch 1 side is plane, thus, even if based on the irregular surface patch 1 of tool that first, second protuberance 11,12 is formed, also the second top 12T reliably can be made to connect with absorber 3, therefore become excellent with the cementability based on hot-melt adhesive (not shown) of surface patch 1.This hot-melt adhesive have to be formed the applicator surface in gap mode, such as adhere in the shape of a spiral, therefore can not be hindered by bonding agent from the liquid transfer to absorber 3 in the second protuberance 12.In addition, by using the hot-melt adhesive making the applicator surface with gap, guarantee the integraty of surface patch 1 and absorber 3 and tracing ability becomes good, with the second protuberance 12 bonding in configure power partly, therefore can maintain the flexibility of absorbent commodity.It should be noted that, cementability can be evaluated by the peel strength between sheet, and this peel strength is preferably more than 0.1cN and below 50cN, is more preferably more than 0.5cN and below 10cN.When peel strength is lower than 0.1cN, be difficult to occur liquid when absorbing on a small quantity from surface patch 1 to the movement of absorber 3, when peel strength is higher than 50cN, the apparent thickness of surface patch 1 easily reduces, and is difficult to the effect realized when absorbing in a large number.

In addition, because the first amount portion 32, level ground of amount portion 31 to the second, level ground density is high, therefore liquid transfer can be carried out from the second amount portion, level ground 32 to the first amount portion, level ground 31, but less to the transfer of the liquid in the second amount portion, level ground 32 from the first amount portion, level ground 31.Thus, not easily returned by the liquid that the first amount portion, level ground 31 absorbs.That is, liquid retainability improves.

Next, be described with reference to the preferred arranging example of Fig. 5 to the groove be made up of recess of above-mentioned absorber 3.

As shown in Fig. 5 (1), in the rear side contrary with above-mentioned surface patch 1 (with reference to Fig. 1) side of this absorber 3, as the channel-shaped extended at least along its length recess 33 and there is first, second, third recess 33A, 33B, 33C.

Specifically, above-mentioned absorber 3 is made up of three parts on its length direction L.Have the first absorbent portion 3A being divided into pars intermedia, the side side being configured in this first absorbent portion 3A the second absorbent portion 3B and be configured in the 3rd absorbent portion 3C of the opposing party side of the first absorbent portion 3A.Thus, the first absorbent portion 3A is configured between the second absorbent portion 3B and the 3rd absorbent portion 3C.In addition, the profile of absorber 3 also can be rectangle, but is more preferably configured to the mode that coordinates with the root of the huckle with wearer, and (following, width D refers to the direction with above-mentioned length direction L-orthogonal to D in the width direction.) the middle shape attenuated at the first absorbent portion 3A place.It should be noted that, first, second, third absorbent portion 3A, 3B, 3C only distinguish and represent the region of absorber 3, not respective absorption portion from part.In addition, when absorber 3 is such as installed on the absorbent commodity of diaper and wears, the first absorbent portion 3A is configured at crotch part, and such as the second absorbent portion 3B is configured at veutro, and the 3rd absorbent portion 3C is configured at dorsal part.Or the second absorbent portion 3B is configured at dorsal part, the 3rd absorbent portion 3C is configured at veutro.

Mainly be configured with multiple (being two in illustrated example) first recess 33A at the first absorbent portion 3A place, each first recess 33A is positioned at the inner side in the side week of the first absorbent portion 3A under overlooking and the main configuration of L along its length.At this, " being mainly configured with multiple first recess 33A at the first absorbent portion 3A place " refers to, except be only configured with the situation of the first recess 33A at the first absorbent portion 3A place except, also comprises the situation that a part is configured with the second recess 33B, the 3rd recess 33C.In addition, " mainly L configuration along its length " refers to, except the situation of only L configuration along its length, also comprises the situation that a part configures along other directions.In addition, in second, third absorbent portion 3B, 3C, mainly configure second, third recess 33B, 33C respectively, respectively second, third recess 33B, 33C mainly along inclined direction configures relative to length direction L.At this, " in second, third absorbent portion 3B, 3C, mainly configuring second, third recess 33B, 33C respectively " refers to, except only configuring the situation of second, third recess 33B, 33C, also comprises the situation of part configuration the first recess 33A." mainly along inclined direction configure " and refer to, also by a part along direction configuration in addition, as the concrete example of incline direction, inclination clathrate can be configured to.Thus, the first recess 33A is different from the configuration of the recess of second, third recess 33B, 33C.

It should be noted that, a part of the first recess 33A also can be configured at a part of second, third absorbent portion 3B, 3C.Such as, according to the desired location of the boundary between first, second absorbent portion 3A, 3B, a part of the second recess 33B is configured at a part of the first absorbent portion 3A, or a part of the first recess 33A is configured at a part of the second absorbent portion 3B.In addition, be also identical for the 3rd absorbent portion 3C.So, according to the desired location of the first absorbent portion 3A and the boundary between second, third absorbent portion 3B, 3C, recess changes relative to the configuration relation of each absorbent portion.

In addition, first, second recess 33A, 33B each other and the first, the 3rd recess 33A, 33C be configured to continuous print recess each other.

In addition, the section shape of the first recess 33A ~ the 3rd recess 33C does not limit, and can have rectangle or inverted trapezoidal.It should be noted that, absorber 3 is made up of the aggregation of the such fiber of non-woven fabrics etc., therefore the profile of the section shape of each recess uncertain, is general shape.

In addition, as shown in Fig. 5 (2), absorber 3 is on the basis of the absorber 3 of the collocating structure shown in described Fig. 5 (1), multiple (being four in illustrated example) first recess 33A is mainly configured with in the first absorbent portion 3A, on the width D of the first absorbent portion 3A, be configured with the 4th recess 33h be connected with the first recess 33A that L configures along its length.Thus, the first recess 33A and the 4th recess 33h is utilized to be so-called ladder grid by recess arrangement.Absorber 3 shown in other structural elements with described Fig. 5 (1) is identical.In this case, liquid transfer enters into rapidly the recess in outside, can carry out liquid transfer more broadly.Therefore, the absorbtivity of liquid increases, and is absorbed as time shorten only.

It should be noted that, the first recess 33A and the 4th recess 33h that belong to the first absorbent portion 3A can be configured to ladder shape (the first amount portion, level ground 31 becomes zigzag), also can be configured to clathrate (the first amount portion, level ground 31 is base-like).In addition, belong to the second absorbent portion 3B, the second recess 33B of the 3rd absorbent portion 3C, the 3rd recess 33C can not exist, also can for being interrupted shape (discontinuous).In addition, for length direction L, can parallel also can be vertical.In addition, multiple first recess 33A, the second recess 33B, the 3rd recess 33C that belong to the first absorbent portion 3A can have identical width separately, also can have different in width.

Next, be described for the action effect of above-mentioned preferred implementation to absorbent commodity of the present invention.First, reference Fig. 6 moves the liquid on above-mentioned surface patch 1 during feed fluid and is described.

As shown in Figure 6, when the liquid measure of the liquid 51 (being represented by arrow in the accompanying drawings) supplied is less, liquid 51 conducts and shifts from the top 12T of the second protuberance 12 to absorber 3 side in the wall of the inner space 12S of the second protuberance 12, assuming that liquid 51 shifts from the second amount portion, level ground 32 that the level ground amount of absorber 3 is lower to the first higher amount portion, level ground 31 of amount, level ground.

In addition when the liquid measure supplied is more, as shown in Fig. 7 (1), the liquid 51 from the top 12T of the second protuberance 12 has little time to flow out, and liquid 51 is deposited in the inner space 12S of the second protuberance 12.

So, as shown in Fig. 7 (2), the liquid 51 retained from the inner space 12S of the second protuberance 12, between the fiber by orientation on the direction linking top 12T and peristome 12H, can flow into the inner space 11S in the first protuberance 11 instantaneously under the effect of its hydraulic pressure.Further, the fibre weight of wall portion 13 is less than top 11T, 12T, therefore when the hydraulic action that liquid 51 is deposited in the degree in the second protuberance 12 is in wall portion 13, can think and easily expand between fiber.

Then, as shown in Fig. 7 (3), because from inner space 12S, internally the 11S amount of liquid 51 that flows into instantaneously in space is more, therefore exceed instantaneously the absorber 3 of surface patch 1 side configuration level ground amount lower second amount portion, the level ground 32 absorbent liquid measure of institute and the liquid measure in the first higher amount portion, level ground 31 of level ground amount can be transferred to from the second amount portion, level ground 32, therefore generation remaining liq 52.This remaining liq 52 passed the wall in the first amount portion, level ground 31 and was deposited in recess 33.The back sheet 2 of opaque liquid is there is in this recess 33 in open side (on the downside of accompanying drawing), even if therefore the open side of recess 33 is downward, liquid 51 also can not spill and be deposited in recess 33, in recess 33 conduction and be diffused into absorber 3 on a large scale in.

In the present invention, a part and the recess 33 of first, second adjacent protuberance 11,12 are configured in the position opposite each other across absorber 3, and the liquid 51 being therefore transferred to the inner space 11S of the first protuberance 11 is easily transferred to recess 33 by the second amount portion, level ground 32 of absorber 3.That is, because the spacing of (between first, second top 11T, 12T) between first, second protuberance 11,12 is narrower than the recess 33 of absorber 3, therefore first, second protuberance 11,12 is necessarily configured with in the position opposed with recess 33.Shift thereby, it is possible to make the liquid of the inner side being supplied to the first protuberance 11 be rapidly to recess 33.And the liquid 51 (remaining liq 52) transferring to recess 33 conduct in recess 33 and be diffused into absorber 3 on a large scale in, absorbed by absorber 3.

When the liquid measure supplied increases further, as shown in Figure 8, imagination carries out the transfer of liquid 51 as described above and the mode that liquid 51 is directly persisted to the recess 33 of bottom with the second amount portion, level ground 32 of measuring from low level ground shifts.Now, under the effect of hydraulic pressure, cave in recess 33 side in the second amount portion, level ground 32 sometimes.And the liquid 51 be deposited in recess 33 conducts and to the long range diffusion of absorber 3, is absorbed by absorber 3 in recess 33.

As mentioned above, the liquid 51 be supplied on surface patch 1 is transferred to rapidly absorber 3 by surface patch 1 from inner space 11S, carries out spreading and is absorbed.

Thus, the transfer of liquid 51 on surface patch 1 is suppressed, therefore, it is possible to prevent side leakage.In addition, even if when a large amount of feed fluid 51, liquid 51 also from the second protuberance 12 to become surface patch 1 second (back side) side Z2 the first protuberance 11 in inner space 11S shift rapidly, therefore not easily at first surface (surface) the side Z1 remaining liq of surface patch 1, therefore, it is possible to reduce skin stick together sense.

In addition, also because the density of the top 12T of the second protuberance 12 is higher than wall portion 13, when a large amount of feed fluid 51, liquid 51 is not easily revealed from top 12T, therefore easy inner space 11S liquid 51 being temporarily deposited in the first protuberance 11.In addition, because the density of top 12T is higher than wall portion 13, therefore also there is the advantage that top 11T, 12T not easily crumble.

Next, with reference to the axonometric chart shown in Fig. 9, below a preferably embodiment of Briefs type articles for wearing of the present invention is described.

In the Briefs type articles for wearing 100 of this description, the height direction of Briefs type articles for wearing is set to Y-direction, the width of Briefs type articles for wearing is set to X-direction, also referred to as " waistline direction ".

As shown in Figure 9, the Briefs type articles for wearing of present embodiment is such as underpants-style diapers 100, the veutro portion 121 with the veutro being configured in wearer, the lower crotch 113 being configured in crotch part and be configured in the drosal part 123 of dorsal part.Below, this underpants-style diapers 100 is described in detail.

Underpants-style diapers 100 is made up of the exterior body 111 forming veutro portion 121 and drosal part 123 and the described absorbent main body 4 that forms lower crotch 113.

Exterior body 111 is by engaging the side edge part 121A of a side in veutro portion 121 with the side edge part 123A of a side of drosal part 123 and being engaged with the side edge part 123B of a side of drosal part 123 by the side edge part 121B of the opposing party in veutro portion 121 and be configured to ring-type.

In addition, lower crotch 113 is made up of the absorbent main body 4 being configured in the crotch part of wearer across veutro portion 121 and drosal part 123 set up.Utilize exterior body 111 in the form of a ring and form Briefs type in the absorbent main body 4 that lower crotch 113 sets up.

Absorbent main body 4 forms crotch part, and extends to waist peristome 112 close beneath of exterior body 111 in veutro portion 121 and drosal part 123 place, fixes with exterior body 111.Thus, in waist area, exterior body 111 has the two side areas of middle section and the non-attaching absorbent main body 4 being fixed with absorbent main body 4.Above-mentioned " waist area " refers to, roughly from the upper edge of waist peristome 112 along the region the position configured near the direction and height direction (Y-direction) to the contact outside root of huckle of its underpart.

Above-mentioned exterior body 111 is configured to be laminated with internal layer part 131 and outer part 133, and has multiple layer region that there is one deck internal layer part 131 at spaced intervals in the height direction (Y-direction) of exterior body 111.Be expressed as follows structure in the accompanying drawings: in a layer region, there is internal layer part 131, outer part 133 is layered at spaced intervals on internal layer part 131 on the height direction of exterior body 111.

The lamination area being laminated with internal layer part 131 and outer part 133 has retractility on the width (X-direction) of underpants-style diapers 100.Lamination area also can possess elastomer 135 between internal layer part 131 and outer part 133.In this case, elastomer 135 is clamped between internal layer part 131 and outer part 133 under elongation state, thus, has retractility.Or, as described later, internal layer part 131 and this two side of outer part 133 or any one party also can be made to be made up of the material with retractility.

As the sheet of the material as internal layer part 131 and outer part 133, can enumerate respectively such as hot-wind nonwoven cloth, hot-rolling non-woven fabrics, spun-laced nonwoven fabric, spun-bonded non-woven fabrics, melt spraying non-woven fabrics etc. based on various method for making non-woven fabrics, weave cotton cloth, woven cloth, resin film etc., also can use the sheet material etc. of stacked for above-mentioned material integration.

In addition, especially from the viewpoint making breathability, feel good, internal layer part 131 is preferably formed by non-woven fabrics, and the viewpoint revealed from preventing Excreta, is preferably formed by hydrophobic non-woven fabrics.

Because above-mentioned underpants-style diapers 100 to use the absorbent main body 4 of absorbent commodity of the present invention at lower crotch 113, therefore, it is possible to prevent liquid from spilling, and can reduce skin stick together sense.

About above-mentioned embodiment, the present invention discloses following absorbent commodity and Briefs type articles for wearing further.

<1> absorbent commodity, wherein, has: be configured in the surface patch of skin abutment face side, be configured in the back sheet of non-skin abutment face side and the absorber between described two panels,

Described absorber there is the first amount portion, level ground and level ground amount lower than the level ground amount in described first amount portion, level ground and surround the second amount portion, level ground in described first amount portion, level ground, described absorber connects with the top of the second protuberance of described surface patch and configures,

Further, this absorber has from surface patch side depression described in described back sheet side direction and with the recess of described second amount portion, the level ground channel-shaped extended at least along its length that is bottom surface,

The absorbent commodity of <2> according to <1>, wherein, the orientation of described wall portion has the top radial fibre orientation toward the outer side from described second protuberance.

The absorbent commodity of <3> according to <1> or <2>, wherein, fiber is with the mode orientation of shrinking towards the top of described second protuberance from described wall portion along the direction, face in the face of described surface patch in the scope of described second protuberance.

The absorbent commodity of <4> according to any one of <1> to <3>, wherein, described first protuberance and described second protuberance have similar to its profile and have the frustum of a cone of fillet or the inner space of hemisphere at top.

The absorbent commodity of <5> according to any one of <1> to <4>, wherein, described inner space separates via the rib portion at the first top linking adjacent described first protuberance, forms discontinuous space.

The absorbent commodity of <6> according to any one of <1> to <5>, wherein, the face of the described absorber of described surface patch side is tabular surface.

The absorbent commodity of <7> according to any one of <1> to <6>, wherein, described first amount portion, level ground and described second amount portion, level ground are in a ratio of high density.

The absorbent commodity of <8> according to any one of <1> to <7>, wherein, the density in described first amount portion, level ground is 0.03g/cm ³above and 0.50g/cm ³below.

The absorbent commodity of <9> according to any one of <1> to <8>, wherein, the density in described second amount portion, level ground is 0.01g/cm ³above and 0.15g/cm ³below.

The absorbent commodity of <10> according to any one of <1> to <9>, wherein, the fibre weight of described wall portion is fewer than the fibre weight at each top of described first protuberance, described second protuberance.

The absorbent commodity of <11> according to any one of <1> to <10>, wherein, described in the density ratio at the top of described first protuberance, described second protuberance, the density of wall portion is high.

The absorbent commodity of <12> according to any one of <1> to <11>, wherein, the thickness of the described surface patch at the top of described first protuberance, the top of described second protuberance and described wall portion each several part place is formed as, the top of described wall portion than described first protuberance and the top thin of described second protuberance.

The absorbent commodity of <13> according to any one of <1> to <12>, wherein, the thickness at the top of described first protuberance is more than 0.5mm and below 2.0mm, the thickness at the position in the face 1/3 of the distance skin side of described wall portion is more than 0.1mm and below 0.7mm, and the thickness at the position in the face 2/3 of distance skin side is more than 0.5mm and below 1.0mm.

The absorbent commodity of <14> according to any one of <1> to <13>, wherein, the average fiber spacing of described wall portion than the fiber spacing at the top of described first protuberance from length.

The absorbent commodity of <15> according to any one of <1> to <14>, wherein, the average fiber spacing at the top of described first protuberance is more than 1 μm and less than 40 μm.

The absorbent commodity of <16> according to any one of <1> to <15>, wherein, the average fiber spacing of described wall portion is more than 10 μm and less than 100 μm.

The absorbent commodity of <17> according to any one of <1> to <16>, wherein, the top of described second protuberance and described absorber are fixed by hot-melt adhesive.

The absorbent commodity of <18> according to any one of <1> to <17>, wherein, described absorber is made up of three parts in their length direction, the first absorbent portion being divided into pars intermedia is configured with multiple first recess, the inner side in the side week of described first absorbent portion under each first recess is positioned at and overlooks, mainly alongst configures.

The absorbent commodity of <19> according to any one of <1> to <18>, wherein, described absorber is made up of three parts in their length direction, comprise the first absorbent portion being divided into pars intermedia, be configured in the second absorbent portion of a side side of the first absorbent portion, and be configured in the 3rd absorbent portion of the opposing party side of the first absorbent portion, in described second absorbent portion, described 3rd absorbent portion is configured with the second recess respectively, 3rd recess, described second recess, described 3rd recess is respectively along the direction configuration of tilting relative to length direction.

<20> Briefs type articles for wearing, its have the veutro being configured in wearer veutro portion, be configured in the lower crotch of crotch part and be configured in the drosal part of dorsal part, the side edge part in veutro portion engages with the side edge part of drosal part and is formed as Briefs type, wherein, the described absorbent commodity according to any one of described <1> to <19> is configured at described crotch part.

[embodiment]

Below, based on the embodiment of the absorbent commodity of above-mentioned first embodiment and comparative example, the present invention is described in more detail.The present invention is not limited to these embodiments.

As an example of the absorbent commodity in the present invention, the Briefs type articles for wearing 100 shown in described Fig. 9 is used to evaluate.This Briefs type articles for wearing 100 by fixing by surface patch, back sheet, be configured in the absorbent main body 4 that absorber therebetween forms and the banded stretchable sheet as exterior body 111 extended along waistline direction at the rear ends region place of absorbent main body 4 forms, banded stretchable sheet carries out local engagement by heat sealing method, ultrasonic sealing method.The detailed content of this Briefs type articles for wearing 100 is described above.

Absorbent main body 4 have length 450mm, front ends width 180mm, rear end width 160mm, pars intermedia (becoming the middle section that crotch part divides during installation) width be the face shaping of the general hourglass shape of 120mm, back sheet is extended at least side of the absorber 3 shown in described Fig. 5, and elastomeric material directly or as the configuration of different sheet material realizes drip-preventing function over an elongate sections.It should be noted that, in order to form the diaper of form shown in described Fig. 9, be used in as banded stretchable sheet the composite sheet material being configured with multiple wire elastic component between spun-bonded non-woven fabrics in the width direction at the rear ends (being equivalent to the 3B in Fig. 5) of absorbent main body part, at standing part (lap) place with absorbent main body 4, owing to Telescopic can be made to reduce based on the cut-out of elastic component, fixing rigidity etc., loses.

Absorbent main body under the state using the side spring function making this absorbent main body because cutting off or remove to lose carries out every evaluation described later.

[embodiment 1]

As shown in said Fig. 2, surface patch 1 is configured with the first protuberance 11 and the second protuberance 12, uses the structure that the spacing of the first protuberance 11 and the second protuberance 12 is 4mm.This surface patch 1 by combing operation and after netted materialization, by being configured as concaveconvex shape and the hot blast method of carrying out hot blast process forms concavo-convex non-woven fabrics under net state.In its fiber, use implemented the surface-treated that carries out based on hydrophilic fibre finishing greatly with spin NBF (SH) fiber (2.2dtex × 51mm).

The 18g/m of polyethylene is used overleaf in sheet 2 ²moisture-inhibiting sheet.

Following structure is used: under the structure shown in described Fig. 5 (2) in absorber 3, paper pulp under rectangular-shaped amount portion, the high level ground i.e. shape of the first amount portion, level ground 31 configuration in ladder clathrate and absorbable polymer are configured in pars intermedia under admixture, utilize 2 16g/m spiral helicine hot-melt adhesive being configured to multiple striated in the mode do not overlapped each other ²absorption paper clamp from surface patch 1 side and back sheet 2 side, and be adjusted to the thickness of expectation.

Then, surface patch 1 and back sheet 2 integrated by the hot-melt adhesive of this absorber 3, be made into evaluation sample.It should be noted that, amount portion, the low level ground i.e. width in the second amount portion, level ground 32 ((bottom) width of the recess extended along its length) is 5mm in both sides.

[embodiment 2]

Embodiment 2, except the shape of absorber being formed as amount portion, two low level grounds i.e. the second amount portion, level ground 32 except the shape of the length direction extension shown in described Fig. 5 (1), makes similarly to Example 1.

[embodiment 3]

The width in amount portion, low level ground is formed as, except 10mm, making similarly to Example 2 in the shape of the length direction extension shown in described Fig. 5 (1) except being formed as amount portion, two low level grounds i.e. the second amount portion, level ground 32 in the shape of absorber 3 by embodiment 3.

[embodiment 4]

The shape of the absorber of the surface patch that embodiment 4 uses is formed as the shape shown in Fig. 3, and the spacing (spacing of the first top 11T and the second top 12T) of the first protuberance 11 and the second protuberance 12 is 7.5mm.In addition, make similarly to Example 2.

[comparative example 1]

Following smooth hot-wind nonwoven cloth is used in surface patch 1, large after this hot-wind nonwoven cloth uses the surface treatment carried out based on hydrophilic fibre finishing identically with embodiment 1 and spin NBF (SH) fiber (2.2dtex × 51mm), via combing operation, hot blast operation and making.Back sheet 2 uses the 18g/m of polyethylene ²moisture-inhibiting sheet.As absorber 3, utilize the profile identical with embodiment 1, order makes and normally used paper pulp and absorbable polymer to be configured under admixture and not have flat (smooth) shape of groove.Then, surface patch 1 and back sheet 2 integrated by the hot-melt adhesive of this absorber 3, produce evaluation sample.

[comparative example 2]

In comparative example 2, as surface patch 1, in the surface patch 1 of comparative example 1, employ the non-woven fabrics after the three-dimensional perforate disclosed in Japanese Unexamined Patent Publication 8-302555 publication (ridge channel-shaped perforate).Aperture widths is 53mm (perforate 21 arranges).Identical with comparative example 1 in addition.

Next, assay method and evaluation methodology are described.

The apparent thickness T1> of < surface patch

Three kinds of apparent thickness T1 in surface patch can measure across the profile status of the first top to the part at the second top by observing.Before section is observed, use the light compression test KES-G5 (trade name) adding technology Co., Ltd., measure the 0.5g/cm of five positions, place ²shi Houdu, obtains meansigma methods, maximum and minima.In mensuration, use process of measurement, condition determination sets in the following manner.

Test portion: paper thin film,

SENS：1，

Measure load: 10g/cm ²,

Determination of the upper limit load: 50g/cm ²,

SPEEDRENGE：0.02cm/sec，

DEF sensitivity is adjusted to more than 2mm and below 20mm at surface patch place.

Next, use the blade (production code member FAS-10) of Feather Safety Shaver Co., Ltd. to cut off surface patch 1, form the section of surface patch 1.Then, use the sweep electron microscope (model JCM-5100) of Jeol Ltd., amplifying observation is carried out to the section cut out.Section is formed view data or printed article, draw the supposition line of installed surface side at the summit place of the first top 11T and draw the supposition line of absorber 3 side that the summit place at the second top 12T in parallel draws, measure minimum range between parallel supposition line (length between the supposition line of the vertical line of drawing from supposition line), using the measurement result that obtains as sheet apparent thickness.The amplification profile arrived according to the observation, determines rib portion 14, measures apparent thickness and the cup portion height H c of top 11T, 12T.Be determined at more than three positions, place to carry out, the meansigma methods of sheet apparent thickness be in and be set to effectively by the situation in the minima-maximum of the mensuration acquisition carried out based on KES-G5.

The assay method > of the thickness of < surface patch

Identical with sheet above apparent thickness, utilize above-mentioned sweep electron microscope to be measured by amplifying observation.For the first protuberance 11, becoming minimum mode to make the sheet thickness of the face of the skin abutment face side of the top 11T of the first protuberance 11 and back sheet 3 side contrary with it and carry out measuring and obtain thickness, is also identical for the second protuberance 12.For wall portion 13, owing to needing to measure curve part, the incline direction line at top from top 11T, therefore the normal direction of the skin abutment face side of wall portion 13 is carried out by the normal direction of the skin abutment face side of wall portion 13 by the position of the height of the distance skin abutment face side 1/3 in cup portion height H c the thickness of meansigma methods as wall portion 13 of the result measured as sheet thickness as the position that the thickness of sheet carries out the height of the result that measures and the distance skin abutment face side 2/3 in cup portion height H c.For 1/3 in surface patch and 2/3 the position of height, by the mode that becomes a view data with the first protuberance 11 and the second protuberance 12 that make surface patch 1 enlarged image can be contacted and combine and the method determined or determine measuring position from the general image of the first protuberance 11 and the second protuberance 12 and the method being carried out detect thickness by enlarged image is determined.

< fiber spacing is from >

Fiber spacing in first top 11T and wall portion 13 is from by using above-mentioned sweep electron microscope amplify in overhead view image and measure.Amplify along normal direction from surface patch 1 side at the first 11T place, top, amplify 1/3 position of cup portion height H c at wall portion 13 place from nauropemeter dough sheet 1 side to (normal direction of wall portion 13).In mensuration, multiplying power is set to more than 50 times and less than 300 times, in the region surrounded by the fiber in rectangular extent, the mensuration number based on image analysis is adjusted to more than 20 and less than 60, be preferably more than 30 and less than 50.In the present invention, measure within the scope of the practical measurement of 700 μm × 500 μm.It should be noted that, in image analysis, by practical measurement 0.5mm ²following as between small fiber structure and from number measure and fiber spacing from mensuration removing.Image analysis by using the Image-Proplus6.2Installation of Co., Ltd. roper, the value suitable with diameter of a circle from each interfibrous areal calculation of removing fiber and as fiber spacing from.Three positions, place for top 11T, 12T and wall portion 13 carry out measuring and calculating, using meansigma methods as average fiber spacing.It should be noted that, measure fiber spacing from time, using from surface patch 1 side to whole fibers that can measure of back sheet 3 side as object, but it is clear but in unsharp as a whole situation in the profile local of the fiber for determining the region that fiber surrounds, not only not as measure fiber spacing from fiber, also remove overall unsharp fiber.In addition, when be in fully cannot carry out the state of binarization process, image, printed article are modified to the state that can measure and measure.

In addition, according to fiber spacing from measurement result, the number ratio of more than 40 μm is calculated as percentage ratio.

< fibre orientation >

Fibre orientation from identical with fiber spacing the first top 11 and wall portion 13 be enlarged into overhead view image and use the image processing software NewQube [trade name] of Co., Ltd. nexus, carries out binarization to described image.Next, the FiberOrientationAnalysis8.13Single (software name) of fibre orientation analysis program is used as, from the determining image angle of orientation and the orientation intensity of described binarization.Be determined at top 11 and wall portion 13 to sentence identical multiplying power and carry out, with above-mentioned fiber spacing from mensuration time close mensuration number scope under implement.In addition, when the unsharp position of the profile of fiber is more, also can utilizes above-mentioned image analysis, determine pars fibrosa and measure.In addition, adjacent wall portion 13 place be determined on the direction (90 ° ± 45 ° directions) orthogonal with the MD direction of the surface patch 1 in the first top 11T carries out.The imaginary line direction of link first top 11T and the second top 12T is measured as above-below direction (orientation angles 90 °) from the vertical line direction in the wall portion face of surface patch by the measurement of wall portion 13, the first top 11T using the MD direction of surface patch 1 as above-below direction (orientation angles 0 °).

< absorber assay method >

The thickness of the absorber 3 produced uses the non-contact laser displacement gauge of Co., Ltd.'s Keyemce (laser head LK-G30, displacement gauge LK-GD500 (trade name)) to measure.It should be noted that, pressure during mensuration is set to 2.5g/cm ², measure two or more sample, try to achieve its meansigma methods.

In addition, the absorber 3 with the first amount portion, level ground 31 and the second amount portion, level ground 32 carries out patterning by the actual measurement of the width of recess (bottom) and general image, and the area occupation ratio of recess is measured by above-mentioned image analysis apparatus.It should be noted that, also can carry out the measurement of topography's overlap.

The assay method > of < absorbent properties (liquid diffusibility)

At the length direction central part of absorber 3, the cylinder of width central part placement internal diameter 35mm, the mode that the height of position injecting the absorber 3 of liquid with distance is 10mm maintains liquid, and as liquid implantation concentration 0.005% carried out painted normal saline solution 40g by Amaranth.Acrylic panel (thickness 5mm, length 250mm, width 100mm) is possessed with the size that can cover Total Product at cylinder foot.

Measure the diffusion area of the liquid of injection after 10 minutes.

The mensuration of diffusion area is by the coloured part of absorber 3 is transferred to OHP thin film, and uses the Image-Proplus6.2Installation of Co., Ltd. roper to carry out image analysis to measure.

The diffusion area that measurement result is expressed as liquid is wider, and the utilization ratio of absorber 3 is higher.

The algoscopy > of < level ground amount

Position (face component, absorber, amount portion, high level ground, amount portion, low level ground) for measuring being cut to 10cm × 10cm, trying to achieve by measuring the quality at this position.It should be noted that, be cut to 2cm × 2cm at the position that cannot cut 10cm × 10cm and try to achieve.

The algoscopy > of < density

Density is the level ground amount by utilizing said method to measure the position for measuring, and try to achieve divided by the thickness utilizing described method to determine.

< surface patch evaluates > with the bonding of absorber

With the width middle section of above-mentioned each evaluation sample be width 50mm, length direction middle section is 250mm mode cuts out rectangle, the length direction end of a side is made to make to be separated between surface patch 1 with absorber 2 within the scope of 50mm, use tensile testing machine (orientec society system, RTA100 [trade name]), at the surface patch of chuck side, top clamping separate section, the absorber 3 and the back sheet that clamp separate section in lower chuck side measure peel strength.It should be noted that, by being set to 50mm between chuck, measuring speed being set to 50mm/ and dividing and carry out.Chuck is spaced apart more than 60mm and the peak value of upper five positions, place of below 160mm average as peel strength, this peel strength be more than 0.1cN and below 50cN time make cementability be evaluate A, in addition for evaluating C.

Represent for the measurement result of above-mentioned each assessment item and evaluation result in Table 1.

[table 1]

The effect > of < embodiment

Evaluation result is as shown in Table 1 clearly known, obtains following such result.

Embodiment 1 ~ 4 the angle of orientation of wall portion be more than 82 ° and less than 93 ° time all on the top of link second protuberance and the direction of its peristome, show fibre orientation.Peel strength is in more than 0.1cN and the scope of below 50cN in addition, and the cementability of surface patch and absorber is for evaluate A.

The diffusion area of embodiment 1 liquid compared with comparative example 1,2 is comparatively large, therefore known, can absorber 3 on a large scale in absorbing fluid, utilization ratio is higher.In addition, by there is the second amount portion, level ground 32 of low level ground amount along length and width two direction at absorber 3 place of crotch part, easily flexibly bend in either direction.Consequently, improve the conformability with human body, therefore when being such as used as more overnight hygienic band, the diaper of excretion, even if at paper pulp, SAP amount is more and under state that thickness that is absorber 3 is thicker, also can improve conformability and reduce sense of discomfort when wearing.

The diffusion area of embodiment 2 liquid compared with comparative example 1,2 is comparatively large, therefore can further improve the utilization ratio of absorber 3.Therefore, be not easily deposited in decanting point position because liquid becomes, stick together sense therefore, it is possible to reduce near decanting point, and prevent side leakage.In addition, because the second amount portion, level ground 32 of the low level ground amount of the absorber 3 of crotch part is only positioned at length direction, therefore such as in the daytime that action is more, absorber 3 is not fragile, and by there is amount portion, low level ground in the direction of the width, become and not easily hinder walking action, make the sense of discomfort reducing wearer.

The diffusion area of embodiment 3 liquid compared with comparative example 1,2 is comparatively large, therefore can further improve the utilization ratio of absorber 3.In addition, the second amount portion, level ground 32 of the low level ground amount of the absorber 3 of crotch part is only in length direction and is large area, therefore can further improve the diffusibility of the liquid at groove portion (recess 33) place.Consequently, the utilization ratio of absorber 3 can be improved further, the paper pulp under the leakage performance making reduction identical, the amount of super absorbent polymer (SAP).In addition, when wearing, because the amount region, high level ground (the first amount portion, level ground 31) of absorber 3 is less at crotch part place, therefore reduce sense of discomfort during action further.Therefore, baby diaper when daily-use sanitary towel, movable active high monthly age is applicable to.

The apparent thickness of the surface patch 1 of embodiment 4 is thicker, and the space therefore between absorber 3 and skin is wider, not easily feels to stick together.Therefore, use by under midstance by day, can think raising dry sensation.In sum, baby diaper when daily-use sanitary towel, movable active high monthly age is applicable to.

The present invention is described in the lump with above-mentioned embodiment and embodiment; but as long as no being particularly limited to; the present invention is not limited to any details illustrated, should be interpreted as wide in range protection domain under the prerequisite of the not inventive concept shown in violation of a right claim and scope.

The part of its content as the record of this description, based on the Japanese Patent Application 2011-286764 CLAIM OF PRIORITY proposing patent application to Japan on 27th at December in 2011, is enrolled with reference to above-mentioned application at this by the application.

Symbol description:

1 surface patch

2 back sheets

3 absorbers

11 first protuberances

12 second protuberances

11H, 12H peristome

11S, 12S inner space

11T, 12T top

13 wall portion

31 first amount portion, level grounds

32 second amount portion, level grounds

33 recesses

X first direction

Y second direction

W third direction

Z1 first surface side

Z2 second side

Claims

1. an absorbent commodity, wherein,

Have: be configured in the surface patch of skin abutment face side, be configured in the back sheet of non-skin abutment face side and the absorber between described surface patch and described back sheet,

Further, this absorber has from surface patch side depression described in described back sheet side direction and with the recess of described second amount portion, the level ground flute profile extended at least along its length that is bottom surface,

2. absorbent commodity according to claim 1, wherein,

The orientation of described wall portion has the top radial fibre orientation toward the outer side from described second protuberance.

3. absorbent commodity according to claim 1 and 2, wherein,

Fiber is with the mode orientation of shrinking towards the top of described second protuberance from described wall portion along the direction, face in the face of described surface patch in the scope of described second protuberance.

4. absorbent commodity according to claim 1 and 2, wherein,

Described first protuberance and described second protuberance have similar to its profile and have the frustum of a cone of fillet or the inner space of hemisphere at top.

5. absorbent commodity according to claim 1 and 2, wherein,

The inner space that described first protuberance has and the inner space that described second protuberance has separate via the rib portion at the first top linking adjacent described first protuberance separately, form discontinuous space.

6. absorbent commodity according to claim 1 and 2, wherein,

The face of the described absorber of described surface patch side is tabular surface.

7. absorbent commodity according to claim 1 and 2, wherein,

Described first amount portion, level ground and described second amount portion, level ground are in a ratio of high density.

8. absorbent commodity according to claim 1 and 2, wherein,

The density in described first amount portion, level ground is 0.03g/cm ³above and 0.50g/cm ³below.

9. absorbent commodity according to claim 1 and 2, wherein,

The density in described first amount portion, level ground is 0.05g/cm ³above and 0.40g/cm ³below.

10. absorbent commodity according to claim 1 and 2, wherein,

The density in described first amount portion, level ground is 0.07g/cm ³above and 0.30g/cm ³below.

11. absorbent commodities according to claim 1 and 2, wherein,

The density in described second amount portion, level ground is 0.01g/cm ³above and 0.15g/cm ³below.

12. absorbent commodities according to claim 1 and 2, wherein,

The density in described second amount portion, level ground is 0.03g/cm ³above and 0.12g/cm ³below.

13. absorbent commodities according to claim 1 and 2, wherein,

The fibre weight of described wall portion is fewer than the fibre weight at each top of described first protuberance, described second protuberance.

14. absorbent commodities according to claim 1 and 2, wherein,

Described in the density ratio at the top of described first protuberance, described second protuberance, the density of wall portion is high.

15. absorbent commodities according to claim 1 and 2, wherein,

The thickness of the described surface patch at the top of described first protuberance, the top of described second protuberance and described wall portion each several part place is formed as, the top of described wall portion than described first protuberance and the top thin of described second protuberance.

16. absorbent commodities according to claim 1 and 2, wherein,

The thickness at the top of described first protuberance is more than 0.5mm and below 2.0mm, the thickness at the position in the face 1/3 of the distance skin side of described wall portion is more than 0.1mm and below 0.7mm, and the thickness at the position in the face 2/3 of distance skin side is more than 0.5mm and below 1.0mm.

17. absorbent commodities according to claim 1 and 2, wherein,

The average fiber spacing of described wall portion than the fiber spacing at the top of described first protuberance from length.

18. absorbent commodities according to claim 1 and 2, wherein,

The average fiber spacing at the top of described first protuberance is more than 1 μm and less than 40 μm.

19. absorbent commodities according to claim 1 and 2, wherein,

The average fiber spacing at the top of described first protuberance is more than 5 μm and less than 30 μm.

20. absorbent commodities according to claim 1 and 2, wherein,

The average fiber spacing of described wall portion is more than 10 μm and less than 100 μm.

21. absorbent commodities according to claim 1 and 2, wherein,

The average fiber spacing of described wall portion is more than 15 μm and less than 80 μm.

22. absorbent commodities according to claim 1 and 2, wherein,

The fiber spacing of described wall portion is more than 5% and less than 50% from the number ratio for more than 40 μm.

23. absorbent commodities according to claim 1 and 2, wherein,

The fiber spacing of described wall portion is more than 5% and less than 30% from the number ratio for more than 40 μm.

24. absorbent commodities according to claim 1 and 2, wherein,

Top and the described absorber of described second protuberance are fixed by hot-melt adhesive.

25. absorbent commodities according to claim 24, wherein,

Described hot-melt adhesive configures in the mode becoming the applicator surface with gap.

26. absorbent commodities according to claim 1 and 2, wherein,

Described absorber is made up of three parts in their length direction, and the first absorbent portion being divided into pars intermedia is configured with multiple first recess, and the inner side in the side week of described first absorbent portion under each first recess is positioned at and overlooks, mainly alongst configures.

27. absorbent commodities according to claim 1 and 2, wherein,

Described absorber is made up of three parts in their length direction, comprise the first absorbent portion being divided into pars intermedia, the side side being configured in the first absorbent portion the second absorbent portion and be configured in the 3rd absorbent portion of the opposing party side of the first absorbent portion, described second absorbent portion, described 3rd absorbent portion are configured with the second recess, the 3rd recess respectively, and described second recess, described 3rd recess are respectively along the direction configuration of tilting relative to length direction.

28. absorbent commodities according to claim 1 and 2, wherein,

Described surface patch entirety apparent on thickness be more than 1.0mm and below 9.0mm.

29. absorbent commodities according to claim 1 and 2, wherein,

Described surface patch entirety apparent on thickness be more than 1.5mm and below 7.0mm.

30. absorbent commodities according to claim 1 and 2, wherein,

Described surface patch entirety apparent on thickness be more than 2.0mm and below 6.0mm.

31. absorbent commodities according to claim 5, wherein,

Be more than 0.1mm and below 3.0mm from described first top to the apparent thickness of described first protuberance the extreme lower position in described rib portion.

32. absorbent commodities according to claim 5, wherein,

Be more than 0.3mm and below 2.5mm from described first top to the apparent thickness of described first protuberance the extreme lower position in described rib portion.

33. absorbent commodities according to claim 5, wherein,

Be more than 0.5mm and below 2.0mm from described first top to the apparent thickness of described first protuberance the extreme lower position in described rib portion.

34. absorbent commodities according to claim 1 and 2, wherein,

The apparent thickness of described second protuberance between the top of described wall portion and described second protuberance is more than 0.5mm and below 8.0mm.

35. absorbent commodities according to claim 1 and 2, wherein,

The apparent thickness of described second protuberance between the top of described wall portion and described second protuberance is more than 0.7mm and below 7.0mm.

36. absorbent commodities according to claim 1 and 2, wherein,

The apparent thickness of described second protuberance between the top of described wall portion and described second protuberance is more than 1.0mm and below 5.0mm.

37. 1 kinds of Briefs type articles for wearing, its have the veutro being configured in wearer veutro portion, be configured in the lower crotch of crotch part and be configured in the drosal part of dorsal part, the side edge part in veutro portion engages with the side edge part of drosal part and is formed as Briefs type, wherein,

The described absorbent commodity according to any one of described claims 1 to 36 is configured at described crotch part.