CN109640912A - Absorbent commodity - Google Patents

Abstract

The present invention is at the position for wearing the contact of Shi Nengyu wearer's skin of absorbent commodity configured with absorption of perspiration piece (10).Absorption of perspiration piece (10) has the second layer (10B) overlappingly configured away from the nearest first layer of wearer's skin (10A) and with the non-skin opposite face of the first layer (10A).When overlooking first layer (10A), there are multiple hydrophilic regions (11) for dispersion, there are hydrophobic region (12) around multiple hydrophilic region (11) is respective, and the second layer (10B) includes hydrophilic non-woven.

Description

Absorbent commodity

Technical field

The present invention relates to include the absorbent commodity with the absorption of perspiration piece of sweat-absorbing function.

Background technique

In the prior art, in the absorbent commodities such as disposable diaper, in order to reduce the skin problem such as heat-rash, when wearing The position that may be contacted with wearer's skin configures the absorption of perspiration piece being made of hydrophilic material.

In Patent Documents 1 to 3, records and use the lit-par-lit structure being laminated by 2 layers or more of fibrous layer as suction The case where sweat piece.The absorption of perspiration piece recorded in patent document 1 has away from the nearest inside hydrophily piece of wearer's skin and matches Outside hydrophily piece of the non-skin with respect to surface side for setting hydrophily piece on the inside of this, according to patent document 1, the outside hydrophily piece Compared with the inside hydrophily piece, the diffusivity of liquid is high, therefore, the sweat for migrating to the outside hydrophily piece can be made quickly to expand It dissipates.In patent document 1, the specific structure as the hydrophily piece, recording is inhaling the composition fiber of outside hydrophily piece Transverse direction (with the orthogonal direction longitudinal in the front-back direction for corresponding to wearer) orientation of the property received article, inside hydrophily piece ratio are outer Side hydrophily piece is easier to compressive deformation, outside hydrophily piece content more high than inside hydrophily piece density.

On the other hand, in the absorption of perspiration piece recorded in patent document 2, away from wearer's skin, nearest layer includes hydrophily fibre The mixed layer of peacekeeping hydrophobic fibre.According to absorption of perspiration piece documented by patent document 2, parent contained in the layer contacted with skin Aqueous fiber can draw sweat and make dry skin, in addition, hydrophobic fibre contained in the layer can stop absorbing sweat and become moist through Hydrophilic fibre be tightly attached to skin, therefore, refrigerant sense can be brought to skin.In addition, in patent document 2, recording 3 layer construction of the insertion configured with the middle layer based on hydrophilic fibre between outermost 2 layers of above-mentioned mixed layer Absorption of perspiration piece, the absorption of perspiration piece constructed according to this 3 layers can make the sweat being drawn in outermost layer fine to the hydrophily of middle layer Dimension infiltration is spread away from skin, therefore, is further promoted to skin bring refrigerant sense.

In addition, the absorption of perspiration piece recorded in patent document 3 have away from the nearest internal layer of wearer's skin and with the internal layer phase Adjacent outer layer, is for two layers the mixed layer of hydrophilic fibre and hydrophobic fibre, but internal layer is based on hydrophobic fibre, and outer Layer is based on hydrophilic fibre.In addition, a part of the hydrophilic fibre of outer layer is reached by the Inter-fiber voids of internal layer The skin opposite face of absorption of perspiration piece, by the sweat-absorbing function of the hydrophilic fibre extended from the outer layer, the sweat of wearer is from internal layer Outer layers are mobile, to keep the surface of skin not moist and be always drying regime.

Existing technical literature

Patent document

Patent document 1: Japanese Patent Laid-Open 2010-246901 bulletin

Patent document 2: Japanese Patent Laid-Open 2007-301346 bulletin

Patent document 3: Japanese Patent Laid-Open 2001-327534 bulletin

Summary of the invention

The present invention provides a kind of absorption of the position that may be contacted with wearer's skin when wearing configured with absorption of perspiration piece Property article.Above-mentioned absorption of perspiration piece has away from the nearest first layer of wearer's skin and Chong Die with the non-skin opposite face of the first layer The second layer of ground configuration.When overlooking above-mentioned first layer, dispersion there are multiple hydrophilic regions, and multiple hydrophilic region respectively Around there are hydrophobic region, the above-mentioned second layer is hydrophilic non-woven.

Detailed description of the invention

Fig. 1 is the Breeches type disposable diaper for schematically showing the embodiment as absorbent commodity of the invention Perspective view.

Fig. 2 is the skin for the expansion and elongation state for schematically showing diaper shown in FIG. 1 with respect to surface side (inner surface Side) expansion top view.

Fig. 3 is the cross-sectional view for schematically showing the section I-I of Fig. 2.

Fig. 4 is the cross-sectional view for schematically showing the section II-II of Fig. 2.

Fig. 5 is the exploded perspective view for decomposing diaper shown in FIG. 1 and schematically showing.

Fig. 6 is the first layer side surface i.e. skin opposite face schematically shown in an example of absorption of perspiration piece of the invention Top view.

Fig. 7 (a)~Fig. 7 (c) is respectively the variation of the joint portion pattern of an example of absorption of perspiration piece of the invention, is schematic Ground indicates the sectional view along the section of piece thickness direction.

Fig. 8 (a)~Fig. 8 (c) is respectively another first layer side table for schematically showing absorption of perspiration piece of the invention Face, that is, skin opposite face top view.

Specific embodiment

Though the relevant technologies for the absorption of perspiration piece recorded in Patent Documents 1 to 3 can somewhat inhibit the skin such as heat-rash The generation of problem, but still have room for improvement.Sweat can be quickly absorbed, the skin of wearer is made it away from, and makes to be absorbed Sweat rapid evaporation, and the skin enabled a wearer to remains drying regime, to be not easy to cause the suction of the skin problem such as heat-rash The property received article not yet occurs.

Project of the invention can quickly absorb sweat providing one kind, expand it in a manner of the skin far from wearer It dissipates, and its rapid evaporation can be made to be not easy to cause the absorbent commodity of the skin problem such as heat-rash.

Hereinafter, being based on the preferred embodiments of the present invention, referring to attached drawing, the present invention will be described.In FIG. 1 to FIG. 4 In, indicate the Breeches type disposable diaper 1A of the embodiment as absorbent commodity of the invention.As shown in fig. 1~fig. 5, Diaper 1A, which has, corresponds to the wearer longitudinal direction X and lateral Y orthogonal with longitudinal X in the front-back direction, also, with crotch B and from The front and back of crotch B has the absorber 23 of liquid retainability in longitudinal X veutro portion A extended and drosal part C, and in crotch B. Crotch B is that at the position of the crotch part of wearer, veutro portion A is the dress in diaper 1A for configuration under the wearing effect of diaper 1A Configuring under state is being the position of the front side of longitudinal direction X by the veutro of wearer than crotch B, and drosal part C is the dress in diaper 1A Configure under state is being the position of the rear side of longitudinal direction X by the back side of wearer than crotch B.

Diaper 1A has the absorbent main body 2 comprising absorber 23 in the central portion of lateral Y, also, has configuration at this The non-skin of absorbent main body 2 is with respect to the exterior body 3 that surface side is than the absorbent main body 2 away from the remote side of wearer's body, abdomen Two sides edge AS, CS of the X along longitudinal direction of the respective exterior body 3 of side A and drosal part C is each other by bonding agent, heat sealing, ultrasound Wave sealing etc. well known to joint method and be interconnected, as shown in Figure 1, being formed with a pair of of side seal portion S, S, the trunk for wearer By waist opening portion WH and for lower limb a pair of of leg opening part LH, LH for passing through of wearer.

Absorbent main body 2 is rectangle when being formed as overlooking under the expansion of diaper 1A as shown in Figure 2 and elongation state Shape extends on longitudinal X from veutro portion A to drosal part C, the longitudinal direction of length direction and expansion and the diaper 1A of elongation state X is consistent, and the central portion for the lateral Y configured in exterior body 3 is engaged in exterior body 3 by bonding agent." the expansion of so-called diaper 1A And elongation state " refer to diaper 1A is separated in side seal portion S and becomes unfolded state, the diaper 1A of the unfolded state is spread Exhibition, extends the elastomeric element in each portion, (puts down in the state of excluding all influences of elastomeric element until becoming design size Size when sprawling to planar is identical) until state.

As shown in figure 3, absorbent main body 2 has the positive dough sheet 21 for the liquid permeability for forming skin opposite face, formation non- The liquid impermeability or liquid difficulty permeability of skin opposite face or the back sheet 22 of water-repellancy and between two pieces 21,22 Liquid retainability absorber 23, they pass through joint method well known to bonding agent etc. integration constitute.In this embodiment party In formula, absorber 23 includes the absorbent core 231 of liquid retainability and outer surface (the skin opposite face by the absorbent core 231 With non-this two sides of skin opposite face) cladding clad sheet 232.It is Nian Jie by heat molten type between absorbent core 231 and clad sheet 232 Joint method well known to agent etc. and engage.

In the present specification, " skin opposite face " is absorbing for absorbent commodity or its component parts (such as positive dough sheet) The face towards wearer's skin side when wearing, the side i.e. away from wearer's skin relative close of property article, " non-skin is opposite Face " be absorbent commodity or the opposite side towards skin side when wearing in absorbent commodity of its component parts face, i.e. away from The side of the skin of wearer relatively far away from.In addition, it is so-called herein refer to " when wearing " maintain the common appropriate position, i.e. of wearing The correct state for wearing position of the absorbent commodity.

As positive dough sheet 21, back sheet 22 and the absorbent core 231 and clad sheet 232 that constitute absorber 23, it is able to This kind of absorbent commodity used a variety of materials all the time are used with no particular limitation.For example, as positive dough sheet 21, it can The lamination of resin film or resin film and non-woven fabrics etc. is able to use as back sheet 22 using various non-woven fabrics or apertured film etc. Object etc..Absorbent core 231 is the deposit of the core forming material comprising absorbent material.It, can be without spy as absorbent material Not Xian Zhi forming material commonly used material of the ground used as this kind of absorbent core, such as wood pulp can be enumerated, utilized Hydrophilic agent treated the hydrophilic fibres such as synthetic fibers or water-absorbing polymeric particles.That is, absorbent core 231 can be hydrophilic The product of property fiber is slim or makes the product is slim to support structure made of water-absorbing polymeric particles.As clad sheet 232, energy Enough using liquid permeabilities pieces such as paper, non-woven fabrics.

As shown in Figures 2 and 3, it in the left and right sides portion of the X along longitudinal direction of the skin opposite face of absorbent main body 2, is provided with A pair of of the leakage-proof turnup 24,24 being made of the leakage-proof turnup formation piece 25 of liquid-proof or water-repellancy and gas permeability.In each leakproof Near the free end of flange 24, linear leakage-proof turnup formation is configured with 1 on longitudinal X with elastomeric element 26 with elongation state More than a.Leakage-proof turnup 24 can at least exist as the elastomeric element 26 configured with elongation state is shunk when wearing in diaper 1A Crotch B is erected, and prevents the discharged liquids such as urine from flowing out to the outside of lateral Y as a result,.

Exterior body 3 forms the shape of the diaper 1A of expansion as shown in Figure 2 and elongation state, and the periphery of exterior body 3 is formed The contour line of the contour line of the diaper 1A of the state, i.e. veutro portion A, crotch B and drosal part C each.As shown in Fig. 2, exterior body 3 It is longer than the rectangular shape of the length of longitudinal X in the length that veutro portion A and drosal part C form lateral Y, is being located at veutro portion A and back The two sides edge of crotch B between the C of side, the X along longitudinal direction of exterior body 3 are a pair of leg edge LS, LS with to the center of lateral Y The arc-shaped bend of protrusion forms the middle section of longitudinal direction X to the sand inside contracted on the inside of lateral Y in vertical view as shown in Figure 2 Leak shape.

As shown in Fig. 3~Fig. 5, exterior body 3 includes that the i.e. non-skin in outer surface of the formation diaper 1A under wearing effect is opposite The laminated body of the outer-skin sheet 31 in face and the inner layer piece 32 being oppositely disposed with the skin opposite face of outer-skin sheet 31.In the dress of diaper 1A Under state, outer-skin sheet 31 is located remotely from the side of wearer's body, forms the non-skin opposite face (outer surface) of diaper 1A, internal layer Piece 32 is located at by the side of wearer's body, forms the skin opposite face (inner surface) of diaper 1A.Outer-skin sheet 31 and inner layer piece 32 It is interconnected in predetermined portion via joint methods such as bonding agents.As shown in Figure 4 and Figure 5, outer-skin sheet 31 is in veutro portion A and back There is side C return portion 31E, return portion 31E to extend from the ora terminalis of longitudinal X of inner layer piece 32, and the inwardly skin of synusia 32 Opposite surface side inflection, as shown in Figure 2 and Figure 4, return portion 31E coats the end of longitudinal X of absorbent main body 2.

In the present embodiment, as shown in figure 5, inner layer piece 32 is made of 1 continuous piece, relatively, outer-skin sheet 31 It is made of multiple combinations, specifically, including following piece and constituting: constituting veutro outer-skin sheet 31A, the structure of veutro portion A The crotch outer-skin sheet 31B of crotch B is constituted at the back side outer-skin sheet 31C of drosal part C and between two pieces 31A, 31C.It constitutes In each 31A, 31B, 31C of outer-skin sheet 31, the end of their longitudinal X overlaps each other and passes through bonding in its lap Joint method well known to agent, heat sealing, high frequency sealing, ultrasonic sealing function etc. is interconnected and integrated.In piece 31A, 31C and piece The lap of 31B is that the piece 31B positioned at the longitudinal direction center X is located at the side away from 2 relative close of absorbent main body, and piece respectively The non-skin opposite face at the both ends of longitudinal X of 31B is covered by piece 31A, 31C.

The piece 31 (31A, 31B, 31C) of composition exterior body 3,32 can be piece of the same race each other, or may be xenogenesis Piece can enumerate the mutually different mode of retractility as the example of the latter.Specifically, for example, as veutro outer-skin sheet 31A and back side outer-skin sheet 31C, using in the lateral direction y with the stretchable sheet of retractility, and remainder, that is, crotch of outer-skin sheet 31 Outer-skin sheet 31B and inner layer piece 32 use non-telescoping without retractility.As the stretchable sheet that can be used as exterior body 3, example As the fibrous layer integration stretchable sheet made of the two sides of elastic fibrous layer or single side that will be extended can be enumerated, as bullet Property the fibrous layer and integrated method of fibrous layer that can extend, such as can enumerate: the two be laminated and is subject to water flow and is handed over The method of network, the method that fiber interlacing is made by hot wind etc., the side for engaging it by heating embossing, bonding agent, ultrasonic wave etc. Method.In addition, as can be used as non-telescoping of exterior body 3, such as can enumerate and utilize the resulting non-woven fabrics of various preparation methods, tool Spun-bonded non-woven fabrics, hot-wind nonwoven cloth, needle punched non-woven fabrics can be illustrated for body.

As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, respectively in veutro portion A and drosal part C, linear or band-like waist elastic portion Part 33 in the lateral direction y with elongation state be configured with more, the more waist elastomeric elements 33 on longitudinal X at intervals Intermittent configuration.By the way that waist elastomeric element 33 so to be shown to the state configuration of its elastic extension, opened in waist The opening edge of oral area WH forms throughout its complete cycle substantially continuous cricoid waist fold.In addition, forming a pair of of leg The leg edge LS of the respective opening edge portion opening portion LH, LH, the leg elastic of linear or band-like leg creases formation Component 34 is configured with 1 or more with elongation state, as a result, in the respective opening edge a pair of of leg opening part LH, LH, is formed Throughout its complete cycle substantially continuous cricoid leg creases.The elastomeric element 33,34 passes through the joint methods such as bonding agent It is clamped between the outer-skin sheet 31 and inner layer piece 32 for constituting exterior body 3.

At the position that may be contacted with wearer's skin when wearing of diaper 1A, it is configured with absorption of perspiration piece 10.In this implementation In mode, as shown in Figure 2 and Figure 4, absorption of perspiration piece 10 overlaps in the skin opposite face of the return portion 31E of outer-skin sheet 31.More Specifically, absorption of perspiration piece 10 is when looking down longer shape in one direction, specifically rectangular in shape, length Direction is consistent with transverse direction Y, nearest away from wearer's skin to be formed in veutro portion A and drosal part C respective waist D and waist portion E Position, that is, diaper 1A inner surface side (skin is with respect to surface side) the position near surface mode, throughout the transverse direction of diaper 1A The overall length of Y and configure.

In addition, waist D is the position of the section positioned at wearer, the usually side veutro portion A of diaper 1A or back side The end of longitudinal X of the portion side C to diaper 1A longitudinal X overall length 1~15% length region.In addition, waist portion E is to be located at Region between veutro portion A and drosal part C respective waist D and crotch B.

As shown in figure 4, absorption of perspiration piece 10 have away from the nearest first layer 10A of wearer's skin and overlap this The second layer 10B of the non-skin opposite face of one layer of 10A.First layer 10A and second layer 10B passes through well known to bonding agent or welding etc. Joint method and engage.The shape and size of first layer 10A and second layer 10B when looking down are mutually the same, and one of them Whole region by another one while covering.

In Fig. 6, there is shown surface, that is, absorption of perspiration piece 10 skin opposite face of the side first layer 10A of absorption of perspiration piece 10, In Fig. 7, there is shown the variation in the section of the through-thickness of absorption of perspiration piece 10.In diaper 1A, the part first layer 10A includes With hydrophilic non-woven fabrics, in the top view of first layer 10A as shown in FIG. 6, there are multiple hydrophilic regions 11 for dispersion, and There are hydrophobic regions 12 around multiple hydrophilic region 11 is respective.Hydrophobic region 12 is in the top view of first layer 10A Continuously, multiple hydrophilic regions 11 are surrounded respectively.As shown in fig. 7, multiple hydrophilic regions 11 are respectively throughout absorption of perspiration piece 10 The overall length of thickness direction and exist.

In addition, above-mentioned " there are hydrophobic regions 12 around multiple hydrophilic regions 11 are respective " is included in multiple hydrophilic regions The case where there are hydrophobic region 12 around all hydrophilic regions in 11, and it is a part of hydrophilic in multiple hydrophilic regions 11 The case where there are hydrophobic region 12 around region is (around other hydrophilic regions 11 in addition to a part of hydrophilic region The case where there is no hydrophobic region 12).For the viewpoint for reaching certain effects of the invention more reliably, it is present in absorbing sweat In the sum of the hydrophilic region 11 of the skin opposite face (surface of first layer 10A) of property piece 10, around there is hydrophobic region 12 Ratio shared by the quantity of hydrophilic region 11 is preferably 80% or more, and then preferably 100%, i.e., in multiple hydrophilic regions 11 All hydrophilic regions around there are hydrophobic regions 12.

In addition, above-mentioned refer to model present in absorption of perspiration piece 10 (first layer 10A) " around hydrophilic region 11 (respective) " It encloses around the hydrophilic region 11 in (there may be the ranges of hydrophobic region 12).For example, referring to Fig. 2, in hydrophilic region 11 When the central portion of longitudinal X of one layer of 10A extends to the other end from one end of lateral Y, " around the hydrophilic region 11 " does not include On the outside of two outsides of the lateral Y of the hydrophilic region 11, i.e. the two of the lateral Y of first layer 10A.

It is longer shape in one direction when vertical view, specifically rectangular in first layer 10A shown in Fig. 6 Multiple hydrophilic regions 11 of shape shape, between making its length direction and transverse direction Y consistently on longitudinal X and the two directions transverse direction Y It is configured every property.It is longitudinally arranged in addition, being conceived to multiple hydrophilic regions 11 hydrophilic region made of intermittent configuration on longitudinal X, It longitudinally arranges in arbitrary hydrophilic region and longitudinally arranges other hydrophilic regions adjacent in the lateral direction y with the arbitrary hydrophilic region and indulge Into row, the position consistency of longitudinal X of their hydrophilic region 11 is constituted.In addition, only representing first layer 10A's in Fig. 6 Skin opposite face, but be located at the skin opposite face opposite side non-skin opposite face, the opposite face i.e. with second layer 10B, In position corresponding with the hydrophilic region 11 of the skin opposite face, there is also hydrophilic regions 11, and in the same manner as the skin opposite face It is mixed hydrophilic region 11 and hydrophobic region 12.

First layer 10A as part hydrophilic nonwoven fabrics is in the non-woven fabrics (hydrophobic nonwoven) including hydrophobic fibre It is partly attached with the structure of hydrophilic agent, i.e. hydrophilic agent is partially attached to structure obtained by the non-woven fabrics of sheet, hydrophilic region 11 be the attachment portion of hydrophilic agent.The following situation for the absorption of perspiration piece recorded in the point and such as patent document 2 and 3 is formed pair According to: absorption of perspiration piece has the mixed layer mixed by hydrophilic fibre and hydrophobic fibre, by being distributed in the mixed layer A large amount of hydrophilic fibres every 1 sweat-absorbing function and absorb sweat.Because having the hydrophilic region of sweat-absorbing function in first layer 10A 11 be to be attached to hydrophilic agent obtained by non-woven fabrics, therefore usually have greater than the aggregate of 1 fiber or several fibers Area.

First layer 10A can be by making hydrophilic agent be attached to non-woven fabrics (substrate non-woven fabrics) and system including hydrophobic fibre It makes to obtain.The method of the basad non-woven fabrics attachment of hydrophilic agent is not particularly limited, as long as that partly hydrophilic agent can be made to adhere to In the method for substrate non-woven fabrics, such as the coating or spraying of the coating liquid comprising hydrophilic agent can be enumerated.As first layer The substrate non-woven fabrics of 10A, can be used without special restrictions the material that can be used as the component parts of the absorbent commodities such as positive dough sheet Material, such as the non-woven fabrics manufactured by carding method, spun-bonded non-woven fabrics, melt spraying non-woven fabrics, spunlace non-woven cloth, needle can be enumerated and pierce nothing Woven fabric etc..For the viewpoints such as skin sense of touch, preferred spunbonded non-woven fabrics and hot-wind nonwoven cloth.

The hydrophobic fibre of the composition fiber of substrate non-woven fabrics as first layer 10A is hydrophilic without surfactant etc. Agent, at least to form hydrophilic portion hydrophilic agent attachment before at the time of be not subjected to using hydrophilic agent carry out processing, etc. The hydrophilicity-imparting treatments such as gas ions processing, are to be originally used for hydrophobic fiber.As hydrophobic fibre, it is able to use including various The fiber (thermal welding fiber) of thermoplastic resin.The polyolefin such as polyethylene, polypropylene, poly- pair can be enumerated as thermoplastic resin The polyamide such as the polyester such as polyethylene terephthalate, nylon 6, nylon66 fiber, polyacrylic acid, polyalkyl methacrylate, polychlorostyrene second Alkene, polyvinylidene chloride etc., a kind for capable of being used alone in them or two or more are applied in combination.Hydrophobic fibre can be short Fiber can also be long fibre.As hydrophobic fibre, it is also able to use answering for core-sheath-type or (Side by Side) type arranged side by side etc. Condensating fiber, cutting fibre, profiled fibre, pyrocondensation fiber etc..The containing ratio of hydrophobic fibre in above-mentioned substrate non-woven fabrics At least 50 mass % or more, ordinarily substantially 100 mass %.

In absorption of perspiration piece 10, first layer 10A is part hydrophilic nonwoven fabrics, and relatively, second layer 10B is by hydrophily nonwoven Cloth is constituted.That is, second layer 10B does not have hydrophobic region, generally hydrophilic region.

As the hydrophilic non-woven for constituting second layer 10B, under the premise of using hydrophilic fibre as fiber is constituted, energy Enough use with no particular limitation utilizes the resulting non-woven fabrics of various preparation methods, such as is able to use the substrate nonwoven with first layer 10A The identical non-woven fabrics of cloth.In addition, being able to use as hydrophilic fibre to the substrate non-woven fabrics that can be used as first layer 10A Constitute fiber hydrophobic fibre implement hydrophilicity-imparting treatment obtained by material, specifically, be for example able to use kneading have it is hydrophilic The hydrophobic fibre of agent is attached with hydrophobic fibre of hydrophilic agent etc. on surface.It is further possible to using having hydrophily originally The natural class such as fiber, such as cellulose fibre or half-natural class fiber.As the hydrophily nonwoven for constituting second layer 10B Cloth is also able to use the processing carried out using hydrophilic agent to the substrate non-woven fabrics whole implementation of first layer 10A, corona treatment Etc. hydrophilicity-imparting treatments and material.

In the present invention, piece or part thereof region is hydrophily or hydrophobicity is based on the fibre using following methods measurement The contact angle of dimension judges.Specifically, if the contact angle of fiber is lower than 90 degree, for hydrophily, if 90 degree or more, then For hydrophobicity.Contact angle using the fiber of following methods measurement is smaller, then hydrophily is higher (hydrophobicity is lower), the contact angle Bigger, then hydrophily is lower (hydrophobicity is higher).For example, the hydrophilic region 11 of first layer 10A is to utilize in absorption of perspiration piece 10 The contact angle of the fiber of following methods measurement is lower than 90 degree of region, and hydrophobic region 12 is the area that the contact angle is 90 degree or more Domain.In addition, being lower than 90 degree using the contact angle of the fiber of following methods measurement in second layer 10B entirety.

The measurement method > of < contact angle

So that the mode that the section of the through-thickness of the piece (non-woven fabrics) of measurement object becomes upper surface is placed, it will Thickness direction along piece randomly takes multiple samples from the fiber in position to 1/10 section of thickness on the surface the most of piece, And measure the contact angle of water.The automatic contact angle meter of consonance interface science limited liability company manufacture is used as measuring device MCA-J.Distilled water is used in the measurement of contact angle.It will be from ink-jet mode water droplet blowing unit (ClusterTechnology corporation Make, blowing unit aperture is 25 μm of pulsed ejector CTC-25) liquid measure that sprays is set as 15 picoliters, and so that water droplet is dropped to each fibre The surface in the center of dimension.The situation that water droplet drips is shot with video-corder with the high speed video device connecting with horizontally disposed camera.Just For the viewpoint for carrying out image analysis later, recording apparatus is preferably the personal computer for being assembled with high speed acquisition device.At this In measurement, every 17msec carries out an image recording.In shooting with video-corder resulting image, the software kit FAMAS (version of software is utilized This is 2.6.2, and parsing gimmick is sessile drop method, and analytic method is the method for θ/2, and image processing algorithm is areflexia, image procossing image Mode is frame, threshold levels 200, without Curvature modification) to water droplet drop to fiber initial image carry out image analysis, Calculate water droplet with the contact surface of air and filamentous angle, as contact angle.Fiber is long by 1mm or so fiber Degree is cut, which is positioned in the sample stage of contact angle meter, and is maintained horizontal.With 1 digit after decimal point Precision measure 5 (N=5) fiber samples contact angle, will be by adding up to the average resulting value of the measured value at 10 positions (small The first digit rounds up after several points) it is defined as contact angle.Contact angle is lower, then means that hydrophily is higher.Measurement Environment set is 22 ± 2 DEG C of room temperature, 65 ± 2%RH of humidity.

In addition, from absorbent commodity extract its component parts (such as absorption of perspiration piece) carry out evaluation measurement when, if its structure Other component parts are fixed on by bonding agent, welding etc. at component, then are measured in no fixed part, or by its It is extracted after fixed part removal.At this point, just minimum limit will be suppressed to the influence with the hydrophilic agent in component parts Viewpoint for, as the minimizing technology of fixed part, preferably do not use coating solvent or using drying machine progress heat blow Etc. worries will lead to the method that finish is rotten, loses.

The above are water by 99 mass % of " sweat " that absorption of perspiration piece should absorb, therefore, in order to make to inhale in absorbent commodity Sweat piece shows sufficient absorption of perspiration in practical, needs to make the absorbing sweat that may at least abut with wearer's skin sudoriferous Property piece skin with respect to surface side have hydrophily.However, if the skin opposite face generally hydrophily of absorption of perspiration piece, easy time And the layer for forming the liquid comprising sweat on a large scale between the skin opposite face and skin, it is experienced so as to cause skin Dry feeling reduces, and easily causes the skin problem such as heat-rash.

About the point, in absorption of perspiration piece 10, the first layer 10A that may be abutted with the skin of the wearer of diaper 1A be A part has the part hydrophilic nonwoven fabrics of hydrophobic region 12, and therefore, the dry feeling that skin is experienced is promoted, and is not easy to cause flesh Skin problem.On the other hand, if absorption of perspiration piece be such partial hydrophilicity, might have ability of sweat absorption decline worry, but In absorption of perspiration piece 10, the non-skin opposite face of first layer 10A overlap have it is excellent by liquid-absorbent and liquid diffusibility The second layer 10B that hydrophilic non-woven is constituted, therefore, which is eliminated.That is, in absorption of perspiration piece 10, away from wearer's skin Closer first layer 10A be skin as shown in FIG. 6 with respect to surface side top view in hydrophobic region 12 each independently There are the part hydrophilic nonwoven fabrics of multiple hydrophilic regions 11, and therefore, sweat will not be spread along the plane direction in first layer 10A, and be understood Hydrophilic non-woven, the extensive diffusive along the plane direction for promptly migrating to second layer 10B.In this way, by will be hydrophilic as part The low first layer 10A of non-woven fabrics and in the surface direction diffusivity is laminated with the high second layer 10B of liquid diffusibility, and in thickness side " gradient of liquid diffusibility " is assigned upwards, is quickly absorbed thereby, it is possible to the hydrophilic region 11 in first layer 10A and is attached to dress Person's skin just starts the small droplet of exudation, and makes it in the overall situation diffusion of the second layer 10B of the opposite side of the skin.Especially It is that the hydrophilic region 11 of the absorption function in first layer 10A with sweat is to be lacked the hydrophobic region 12 of liquid diffusibility to surround The relatively small position of area, it may be said that be draw sweat " suction pipe " be therefore not easy in the absorbed sweat of hydrophilic region 11 The face side of first layer 10A diffuses up, and through-thickness can be quickly removed in first layer 10A, whole to reach hydrophily Second layer 10B, then spread along the plane direction in second layer 10B and be absorbed holding.That is, first layer 10A, which mainly undertakes, makes sweat The effect migrated to second layer 10B, second layer 10B mainly undertake absorb keep by first layer 10A migrate come sweat effect, Respective effect is played by the rwo, can quickly absorb the sweat being present on wearer's skin and makes it far from the flesh The mode of skin is spread.In addition, by making sweat only in second layer 10B extensive diffusive along the plane direction, make the surface area of sweat significantly with Air contact, thus, it is possible to rapidly evaporate sweat.As a result, the generation of the skin problem such as heat-rash can be effectively prevented.

For the viewpoint for migrating sweat more quickly by the hydrophilic region 11 of first layer 10A, hydrophilic region 11 leads to The contact angle for crossing above method measurement is preferably 80 degree hereinafter, being in turn preferably 70 degree or less.

For identical viewpoint, the hydrophily of the hydrophilic region 11 of the first layer 10A away from wearer's skin relative close Preferably with away from the hydrophily of second layer 10B (hydrophilic non-woven) of wearer's skin relatively far away from it is identical or be higher than the second layer The hydrophily of 10B.That is, first layer 10A's is hydrophilic when that will be used as hydrophilic index by the contact angle of above method measurement The contact angle in region 11 is preferably equal to or smaller than the contact angle for being used as the second layer 10B of hydrophilic non-woven.

The difference of the contact angle of the contact angle and second layer 10B of hydrophilic region 11 with the latter-the former come if calculating, preferably It is 5 degree or more, and then preferably 10 degree or more, also, it is preferred that being 30 degree hereinafter, being in turn preferably 40 degree or less.

The contact angle of second layer 10B is preferably 85 degree hereinafter, being in turn preferably 83 degree or less.

As described above, the hydrophilic region 11 of first layer 10A can be obtained and making hydrophilic agent be attached to hydrophobic nonwoven ?.At this point, by the type of hydrophilic agent used in appropriate adjustment, concentration, viscosity, coining, temperature, applied when coating Speed etc., the hydrophily that hydrophilic region 11 can be adjusted, the contact angle measured by the above method.Specifically, for example, if The hydrophily of the hydrophily and the hydrophilic agent for being present in second layer 10B that are present in the hydrophilic agent of hydrophilic region 11 is comparably same journey Degree or more, then as described above, the contact angle that the contact angle of hydrophilic region 11 can be made to be equal to or less than second layer 10B.

If the adhesion amount of the hydrophilic agent in first layer 10A is converted into gross mass of the solid content ingredient relative to first layer 10A Ratio, then preferably 0.01 mass % or more, and then preferably 0.1 mass % or more, also, it is preferred that be 5 mass % hereinafter, into And preferably 1 mass % or less.

For the viewpoint for migrating sweat more quickly from first layer 10A to second layer 10B, between the fiber of second layer 10B Distance between the distance preferably equal to or smaller than fiber of first layer 10A.In general, the fibrosis distance for constituting fiber is shorter, then Capillary force is stronger, to make the second layer 10B's for being located at the side away from wearer's skin relatively far away from absorption of perspiration piece 10 Between fiber distance less than first layer 10A fiber between distance and relatively enhance capillary force, thus, it is possible to further improve Speed is migrated on the thickness direction of sweat.

Between the fiber of first layer 10A between distance and the fiber of the second layer 10B distance difference with the former-the latter calculate if, Preferably 5 μm or more, and then preferably 15 μm or more, also, it is preferred that being 35 μm hereinafter, being in turn preferably 30 μm or less.If two The difference of distance is excessive between the fiber of person, then may be due to the suction in the decline and second layer 10B of the capillary force in first layer 10A The reduction of sweat capacity and cause absorbing sweat performance decline.Distance can be found out by following formulas (1) between fiber.

[formula 1]

In formula, L indicates the thickness (cm) of piece (lateral film 4, skin lateral plate 5 or inside piece 6),

W indicates the grammes per square metre (g/m of the piece²), Di indicates to constitute the fiber denier of the composition fiber i of the piece, and α i is indicated should Constitute the weight ratio (%) of fiber i.

For identical viewpoint, the grammes per square metre of first layer 10A is preferably smaller, in addition, the thickness of first layer 10A preferably compared with It is small.

The grammes per square metre of first layer 10A is preferably 20g/m²Hereinafter, being in turn preferably 17g/m²Below.In addition, about first layer The lower limit of the grammes per square metre of 10A, for ensuring the viewpoint of sufficient intensity in practical, preferably 9g/m²More than, and then preferably 10g/m²More than.

The thickness of first layer 10A is preferably 0.19mm or more, and then preferably 0.20mm or more, also, it is preferred that being 0.7mm Hereinafter, being in turn preferably 0.5mm or less.

In addition, just make the capacity boost of the sweat absorbed using absorption of perspiration piece 10, for the viewpoint for also coping with a large amount of sweat, The grammes per square metre of second layer 10B is preferably equal to or greater than the grammes per square metre of first layer 10A.

In addition, the thickness of second layer 10B is preferably equal to or greater than the thickness of first layer 10A for identical viewpoint.

The measurement method of thickness is to use thickness in the state that the non-woven fabrics to measurement object applies 0.05kPa load What measuring appliance was measured.The laser displacement gauge that reflectogauge is manufactured using OMRON company.Thickness measure is 10 positions of measurement Thickness and calculate their average value as thickness.

The difference of the grammes per square metre of the grammes per square metre and second layer 10B of first layer 10A is with the former calculating of the latter-, preferably 1g/m² More than, and then preferably 2g/m²More than, also, it is preferred that being 11g/m²Hereinafter, being in turn preferably 10g/m²Below.

The grammes per square metre of second layer 10B is preferably 10g/m²More than, and then preferably 13g/m²More than, also, it is preferred that being 23g/m² Hereinafter, being in turn preferably 22g/m²Below.

The difference of the thickness of the thickness and second layer 10B of first layer 10A is with the former calculating of the latter-, preferably 0.05mm More than, and then preferably 0.1mm or more, also, it is preferred that being 0.5mm hereinafter, being in turn preferably 0.4mm or less.

The thickness of second layer 10B is preferably 0.1mm or more, and then preferably 0.15mm or more, also, it is preferred that being 0.4mm Hereinafter, being in turn preferably 0.5mm or less.

As described above, needing quickly to absorb sweat, making sweat far from the skin of wearer to inhibit the skin problem such as heat-rash Diffusion, and make sweat rapid evaporation, and the skin enabled a wearer to remains drying regime.For the viewpoint, in first layer 10A The respective area of multiple hydrophilic regions 11 be preferably 1cm²Hereinafter, being in turn preferably 0.9cm²Below.In addition, about hydrophilic area The lower limit of the area in domain 11, for ensuring the viewpoint of minimal size on the basis of can play its effect, preferably For 0.01cm²More than, and then preferably 0.02cm²More than.The area of hydrophilic region is measured by following methods.

The measurement method > of the area of < hydrophilic region

The blue pigments such as No. 1 or Amaranth are mixed in a manner of the 0.01 weight % of concentration for making the pigment to be dissolved in In distilled water, and prepare coloring water.The absorbing sweat piece that measurement object is cut out from absorbent commodity, it is vertical after being immersed in coloring water It carves and takes out.By the diffusion zone of the coloring water on the first layer (skin of the configuration in absorbent commodity is with respect to surface side) of absorbing sweat piece Profile photocopy to transparent OHP film etc., be based on the resulting profile of the transfer, image analysis apparatus used to calculate the expansion of coloring water Area is dissipated, using the value calculated as the area of the hydrophilic region.

In addition, being improved in each hydrophilic region 11 even if the respective area of multiple hydrophilic regions 11 is set as above range Liquid thickness direction on migrate speed, when such hydrophilic region 11 first layer 10A predetermined portion with higher ratio In the presence of rate, there is the ratio of sweat and the area of skin contact to get higher and inhibit with being unable to fully the anxiety of skin problem.With regard to the viewpoint For, the area ratio of the hydrophilic region 11 in first layer 10A is preferably 20% hereinafter, being in turn preferably 15% or less.In addition, closing In the lower limit of the area ratio of hydrophilic region 11, the viewpoint of minimal size is just ensured on the basis of can play it and act on For, preferably 5% or more, and then preferably 8% or more.So-called herein " the area ratio of hydrophilic region " is to be present in unit Ratio of the gross area of the hydrophilic region 11 in region relative to the area of the unit area, so-called herein " unit area " refer to The region of the vertical view quadrangle form of longitudinal 10mm, transverse direction 10mm.

In addition, being improved in each hydrophilic region 11 even if the respective area of multiple hydrophilic regions 11 is set as above range Liquid thickness direction on migrate speed, when such hydrophilic region 11 is deposited to high-density in the predetermined portion of first layer 10A When multiple, high density domain of the existence of the hydrophilic region 11 itself essentially becomes 1 hydrophilic region, thus on the direction of face Liquid diffusibility improves, and as a result has the liquid on thickness direction to migrate the worry that speed declines instead.

Therefore, it is necessary to which the interval of a degree of hydrophilic region 11 is arranged, if but the interval it is excessive, have and be present in first The quantity of the hydrophilic region 11 of layer 10A reduces and causes the worry of absorption of perspiration decline.

For the viewpoint, mutual be spaced in of 2 hydrophilic regions 11,11 adjacent across hydrophobic region 12 corresponds to urine On the X of longitudinal direction in the front-back direction of the wearer of cloth 1A, it is denoted as interval Lx (referring to Fig. 6), preferably 5mm or more, and then preferably 6mm or more, also, it is preferred that being 20mm hereinafter, being in turn preferably 15mm or less.

In addition, in the lateral direction y, it is denoted as interval Ly (referring to Fig. 6), preferably 1mm or more, and then preferably 2mm or more, and And preferably 10mm hereinafter, be preferably 9mm or less in turn.

As described above, if in the skin of the wearer of diaper 1A and skin opposite face, that is, first layer 10A of absorption of perspiration piece 10 Between formed comprising sweat liquid layer, then will lead to the skin problem such as heat-rash.Present inventor et al. is conceived to as the liquid Layer formative index, by following methods measure absorption of perspiration piece surface liquid residual quantity, carried out various grind Study carefully, as a result, it has been found that there is following tendency: the hydrophily of the hydrophilic region 11 in first layer 10A is higher, then the surface of absorption of perspiration piece Liquid residue is more reduced, so that the layer of the liquid between first layer 10A and the skin of wearer comprising sweat the easy to be separate Skin.As described above, the hydrophily (contact angle) of the hydrophilic region 11 of first layer 10A can be present in by appropriate adjustment it is hydrophilic The type or concentration of the hydrophilic agent in region 11 and adjust, as the hydrophilic method for improving hydrophilic region 11, such as can arrange Act uses the material of high-hydrophilic as the method for hydrophilic agent.

The measurement method > of < surface liquid residual quantity

So that hydrophilic agent is partially attached to hydrophobic nonwoven and make first layer, by the first layer with include hydrophily without Second layer stackup of woven fabric makes two layers of integration using bonding agent, and makes the vertical view quadrangle shape of longitudinal direction 50mm, transverse direction 50mm The measurement sample of the absorption of perspiration piece of shape.Grammes per square metre 13g/m is used as hydrophobic nonwoven²Above spun-bonded non-woven fabrics, as parent Aqueous non-woven fabric uses grammes per square metre 15g/m²Above spun-bonded non-woven fabrics.The pattern of hydrophilic agent in first layer is set as and Fig. 6 institute That shows is identical.

Center on overall length 60mm × width 60mm acrylic plate, drip 50mg test(ing) liquid (pure water).Then, will Measurement sample by make first layer downward in a manner of be gently positioned in and drop on the test(ing) liquid on acrylic plate.By 1 point After clock, the measurement sample for absorbing and having test(ing) liquid is taken away, is drawn using the filter paper of (W0) known to weight and remains in pressure gram at this time Experimental liquid on power plate, the weight (W1) of the filter paper after measuring the water suction.Then, by subtracting weight W0 (W1 ﹣ from weight W1 W0), the surface liquid residual quantity (mg) of the sample is calculated.

In the measurement method > of above-mentioned < surface liquid residual quantity, the test(ing) liquid (pure water) dropped on acrylic plate is attached Acrylic plate and as measurement sample first layer 10A, that is, part hydrophilic nonwoven fabrics, spread on interface, and reach parent Water area 11 is drawn to the fiber of hydrophilic region 11, since surface tension is in 11 inside of hydrophilic region and acrylic plate The layer of interface formation liquid.Thereafter, liquid migrates to the second layer and diffuses up in the face side of the second layer, thus above-mentioned boundary The liquid in face is far from acrylic plate, but a part of the liquid does not migrate completely and remains on acrylic plate.According to the present invention The hydrophily of the opinion of person et al., the hydrophilic agent of the forming material as the hydrophilic region 11 in first layer 10A is higher, then and first The contact angle of layer 10A is smaller, and the liquid of above-mentioned interface is easier to migrate to the second layer, to more be not easy to remain in acrylic plate Side.

Based on above-mentioned opinion, in the present invention, as the hydrophilic of the forming material that can preferably act as hydrophilic region 11 Agent can illustrate lauryl hydroxyl sulfo betaine (Kao Corporation's manufacture, trade name " Amphitol 20HD ").

As described above, the first layer 10A and second layer 10B that constitute absorption of perspiration piece 10 pass through well known to bonding agent or welding etc. Joint method and engage, between two layers 10A, 10B as shown in Figure 7 be configured with its joint portion 13.Joint portion 13 is usually hydrophobic Property, therefore worry the configuration pattern due to joint portion 13 and the absorption of perspiration etc. of absorption of perspiration piece 10 is had an impact.With regard to the viewpoint Speech, joint portion 13 preferably partly overlaps with the hydrophilic region 11 of first layer 10A, hydrophilic region 11 preferably have not with joint portion 13 The part of overlapping.The variation at joint portion 13 shown in Fig. 7 (a)~Fig. 7 (c) is the illustration of the preferred embodiment.If Fig. 7 (a)~ Mode shown in Fig. 7 (c) then plays the hydrophilic region 11 of the first layer 10A for the effect for migrating liquid and absorbs holding from parent The second layer 10B for the liquid that water area 11 migrates is close to via joint portion 13, and joint portion 13 will not hinder the liquid Migrate, therefore can more reliably play the function and effect of aforementioned present invention.

In the mode shown in Fig. 7 (a), multiple hydrophilic regions 11 in joint portion 13 and first layer 10A respectively correspondingly, Part Chong Die with hydrophilic region 11 when looking down is only configured, but in the through-thickness of the absorption of perspiration piece 10 as shown in Fig. 7 (a) Sectional view in, the width at joint portion 13 is less than the width of corresponding hydrophilic region 11, therefore, joint portion 13 and hydrophilic region 11 are partly overlapped, and hydrophilic region 11 has the not part Chong Die with joint portion 13.

Hydrophilic region 11 and hydrophobic region 12 in the mode shown in Fig. 7 (b), in across the first layer 10A in joint portion 13 Have a common boundary and it nearby is configured.

In the mode shown in Fig. 7 (c), multiple hydrophobic regions 12 in joint portion 13 and first layer 10A are respectively correspondingly Configuration, and in the sectional view of the through-thickness of absorption of perspiration piece 10 as shown in Fig. 7 (c), the width at joint portion 13 is greater than institute The width of corresponding hydrophobic region 12, therefore, joint portion 13 and the non-skin opposite face of hydrophobic region 12 (are with second layer 10B Opposite face) whole region overlapping, and then also be located at the hydrophobic region 12 around hydrophilic region 11 a part it is Chong Die, but It is not Chong Die with the whole region of the hydrophilic region 11.

In absorption of perspiration piece of the invention, the pattern of the hydrophilic region in first layer is not limited to mode shown in fig. 6, And it can arbitrarily select without departing from the spirit and scope of the invention.In Fig. 8 (a)~Fig. 8 (c), there is shown in first layer Hydrophilic region pattern concrete example.In addition, in each mode shown in Fig. 8, mainly to the first layer with absorption of perspiration piece 10 10A (referring to Fig. 6) different composition parts are illustrated, and are marked identical symbol to identical composition part and are omitted the description. The composition part not being illustrated especially can suitably refer to the explanation about absorption of perspiration piece 10.

In the first layer 10A shown in Fig. 8 (a), multiple hydrophilic regions 11 configure staggeredly.I.e. shown in Fig. 8 (a) In first layer 10A, multiple hydrophilic regions 11 on longitudinal X intermittent configuration made of hydrophilic region longitudinally row in the lateral direction y every Open specified interval and configured with multiple, and the hydrophilic region is longitudinally come projected on lateral Y when, constituting the hydrophilic region Configured with longitudinally adjacent in the lateral direction y other are hydrophilic by row with the hydrophilic region between the projection image for the hydrophilic region 11 longitudinally arranged The projection image in region 11.

The pattern of hydrophilic region 11 shown in fig. 6 and the common point of the pattern of hydrophilic region 11 shown in Fig. 8 (a) are to bow Dotted 11 dispersed of the hydrophilic region configuration of apparent time.

The pattern of hydrophilic region 11 shown in fig. 6 is particular in that: by making hydrophilic region 11,11 mutual transverse directions Interval Ly relative narrower (being set as above-mentioned prescribed limit) on Y, can efficiently absorb and slowly ooze out from the skin of wearer Sweat.

On the other hand, the staggered pattern of hydrophilic region 11 shown in Fig. 8 (a) is particular in that: can be from wearing The sweat of the sweat gland secretion of person's skin assemble and become stage of the drop of size to a certain degree on the skin, efficiently absorb The drop of the sweat.

In the first layer 10A shown in Fig. 8 (b) and Fig. 8 (c), prolong on (specifically transverse direction Y) in one direction respectively The linear hydrophilic region 11 of the vertical view stretched configures at intervals on the direction (specifically longitudinal direction X) orthogonal with a direction Have multiple.The plan view shape of hydrophilic region 11 is helical form (full curve shape) in Fig. 8 (b), in Fig. 8 (c) be it is linear, Fig. 8 (b) is so-called spiral pattern, and Fig. 8 (c) is so-called candy strip.The mode according to shown in Fig. 8 (b) and Fig. 8 (c), The part of first layer 10A abutted with wearer's skin, the endlong extension configured with multiple lateral Y throughout the abutment portion Linear hydrophilic region 11 therefore can efficiently absorb sweat.In addition, overlooking line as shown in Fig. 8 (b) and Fig. 8 (c) When the hydrophilic region 11 of shape extends to the other end from one end of the lateral Y of first layer 10A, than the lateral Y of the hydrophilic region 11 Both ends are the non-domain of the existence of first layer 10A (absorption of perspiration piece 10), rather than " hydrophilic region 11 by the part in the outside of transverse direction Y Around ", the point is same as above.

In the present invention, the plan view shape of the hydrophilic region in first layer is not limited to the mode of diagram, can be appropriate Selection.If illustrating the plan view shape of hydrophilic region 11, can enumerate: circle, ellipse, triangle, quadrangle, hexagon etc. It is dotted, the threadiness such as straight line, curve, dotted line.It each other can be identical additionally, there are multiple hydrophilic regions of the one side in first layer Plan view shape, can also be different.

As can be used in the hydrophilic agent of absorption of perspiration piece of the invention, such as materials described below can be enumerated.

The ethers such as polyoxyethylene alkyl ether, polyoxypropylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxypropylene alkyl phenylate Type nonionic class surfactant.

The polyalcohols ether type nonionic class surfactant such as alkyl glycosides.

The ester type such as macrogol ester, polyoxyethylene fatty acid ester, polyoxypropylene aliphatic ester nonionic class surface is living Property agent.

Sucrose fatty ester, sorbitan carboxylic esters, polyoxyethylene fatty acid ester, polyoxypropylene aliphatic ester etc. are more First alcohol ester type nonionic class surfactant.

The amides such as fatty acid alkanol amides, the alkylene oxide addition product of aliphatic amide of acyl group with carbon number 8~18 Class nonionic class surfactant.

Alkyl ethoxylates, polyethylene glycol dilaurate, polyglycol distearate, alkylethoxy amine.

Dimethyl siloxane-methyl (polyoxyethylene) silicone copolymers, dimethyl siloxane-methyl (polyoxypropylene) Silicone copolymers, dimethyl siloxane-methyl (polyoxyethylene/polyoxypropylene) silicone copolymers, methyl (polyoxyethylene) Polysiloxane copolymer, methyl (polyoxypropylene) polysiloxane copolymer, methyl (polyoxyethylene/polyoxypropylene) polysiloxanes are total The polyoxygenateds alkene modified silicones such as polymers, methyl (polyoxyethylene/polybutylene) polysiloxane copolymer.

Hydrophilic agent for absorption of perspiration piece of the invention preferably has water-insoluble.By using the hydrophilic of water-insoluble Agent when the body fluid such as absorption of perspiration piece and sweat or urine contact in the dress of absorbent commodity, is not susceptible to hydrophilic agent exudation or is lost Unfavorable condition.The hydrophilic agent of water-insoluble refers to that using the solubility relative to 25 DEG C of water of following methods measurement be 1 matter Measure % or less.The hydrophilic agent of water-insoluble can be for example, by making 3000 or more the weight average molecular weight of hydrophilic agent or increasing Add the methods of chain length of alkyl chain possessed by hydrophilic agent and obtains.As the hydrophilic agent of water-insoluble, such as can enumerate poly- Ethylene oxide laurel ether, lauryl hydroxyl sulfo betaine.

The measurement method > of the solubility of < hydrophilic agent

Hydrophilic agent is put into 25 DEG C of 100g of pure water, is stirred and is made it dissolve using blender or vibrating machine, it will Even if 1 hour critical input amount that can not also dissolve of stirring is set as the hydrophilic agent, solubility relative to 25 DEG C of water.

In absorbent commodity of the invention, absorption of perspiration piece configures the portion that may be contacted with wearer's skin when wearing Position.In diaper 1A, the base of the absorbent commodities such as absorbent main body 2 or exterior body 3 (outer-skin sheet 31, inner layer piece 32) will be independent of The piece (barrier piece) of this component parts is used as absorption of perspiration piece 10, by the way that the absorption of perspiration piece 10 is fixed on predetermined portion, it is specific and Speech is fixed on the return portion 31E of outer-skin sheet 31, the overall situation configured in waist D corresponding with the waist surrounding of wearer, but It's not limited to that for the configuration mode of absorption of perspiration piece.For example, constituting in absorbent commodity of the invention and being used as the absorbability object Basic component parts needed for the main body of product may be absorption of perspiration piece.Such as in diaper 1A, configure in waist D and/or waist The exterior body 3 of body portion E can also be absorption of perspiration piece, more specifically, for example, the return portion 31E or inner layer piece 32 of outer-skin sheet 31 It can also be absorption of perspiration piece.

In addition, be so-called flat type disposable diaper in absorbent commodity of the invention, rather than as diaper 1A It, can also be in composition of the configuration in the position nearest away from wearer's skin of the lateral outer side of absorber when Breeches type disposable diaper The skin opposite face of component (for example, sidepiece sheet, leakage-proof turnup, which are formed, uses piece), the fixed absorption of perspiration independently of this composition component Piece, alternatively, this composition component itself can also be absorption of perspiration piece of the invention.

More than, based on embodiments of the present invention, the present invention is described, but the present invention is not restricted to above-mentioned reality Mode is applied, and is able to carry out and suitably changes.For example, as shown in Fig. 2, the exterior body 3 in Breeches type disposable diaper 1A is in veutro The undivided and continuous shape such as hourglass-shaped with across veutro portion A, crotch B and drosal part C at portion A and drosal part C, but this hair Bright exterior body is not restricted to such continuous shape, for example, it is also possible to which it is (preceding in wearer's veutro to be divided into configuration Side) veutro chip part and configuration in the dorsal sheet member of wearer's back side (rear side), absorbent main body is set up in two pieces Component and fix.Illustrate that element possessed by clipped and only an embodiment can be answered suitably in an above-mentioned embodiment For each other embodiments, in addition, the element in each embodiment can be suitably replaced mutually between embodiment.About upper Embodiments of the present invention are stated, and then disclose content below.

1 > of <

A kind of absorbent commodity is wearing the position of Shi Nengyu wearer's skin contact configured with absorption of perspiration piece, the suction In the property received article,

The absorption of perspiration piece have away from the nearest first layer of wearer's skin and with the non-skin opposite face weight of the first layer The second layer configured foldedly,

When overlooking the first layer, there are multiple hydrophilic regions for dispersion, deposit around multiple hydrophilic region is respective In hydrophobic region,

The second layer is hydrophilic non-woven.

2 > of <

The absorbent commodity recorded in such as above-mentioned 1 > of <, wherein the contact angle of the hydrophilic region is 80 degree or less.

3 > of <

Such as the absorbent commodity recorded in above-mentioned 1 > of < or 2 > of <, wherein the contact angle of the hydrophilic region be 70 degree with Under.

4 > of <

The absorbent commodity recorded in such as above-mentioned 3 any one of > of < 1 > to <, wherein the contact angle etc. of the hydrophilic region In or be less than the hydrophilic non-woven (second layer) contact angle.

5 > of <

Such as the absorbent commodity recorded in above-mentioned 4 > of <, wherein the contact angle of the hydrophilic region and the hydrophily without The difference of the contact angle of woven fabric (second layer) is when with the latter-, the former is calculated, preferably 5 degree or more, and then preferably 10 degree with On, also, it is preferred that being 30 degree hereinafter, being in turn preferably 40 degree or less.

6 > of <

The absorbent commodity recorded in such as above-mentioned 5 any one of > of < 1 > to <, wherein the hydrophilic non-woven is (described The second layer) contact angle be preferably 85 degree hereinafter, in turn be preferably 83 degree or less.

7 > of <

The absorbent commodity recorded in such as above-mentioned 6 any one of > of < 1 > to <, wherein the grammes per square metre of the first layer is 20g/ m²Below.

8 > of <

The absorbent commodity recorded in such as above-mentioned 7 any one of > of < 1 > to <, wherein the grammes per square metre of the first layer is 17g/ m²Hereinafter, furthermore it is preferred that being 9g/m²More than, and then preferably 10g/m²More than.

9 > of <

Such as the absorbent commodity recorded in above-mentioned 8 any one of > of < 1 > to <, wherein the grammes per square metre of the second layer be equal to or Greater than the grammes per square metre of the first layer.

10 > of <

The absorbent commodity recorded in such as above-mentioned 9 > of <, wherein the grammes per square metre of the grammes per square metre of the first layer and the second layer Difference when the former calculates with the latter-, preferably 1g/m²More than, and then preferably 2g/m²More than, also, it is preferred that being 11g/m²With Under, and then preferably 10g/m²Below.

11 > of <

The absorbent commodity recorded in such as above-mentioned 10 any one of > of < 1 > to <, wherein the grammes per square metre of the second layer is preferred For 10g/m²More than, and then preferably 13g/m²More than, also, it is preferred that being 23g/m²Hereinafter, being in turn preferably 22g/m²Below.

12 > of <

Such as the absorbent commodity recorded in above-mentioned 11 any one of > of < 1 > to <, wherein the first layer with a thickness of 0.7mm or less.

13 > of <

Such as the absorbent commodity recorded in above-mentioned 12 any one of > of < 1 > to <, wherein the first layer with a thickness of 0.5mm is hereinafter, furthermore it is preferred that be 0.19mm or more, and then preferably 0.20mm or more.

14 > of <

The absorbent commodity recorded in such as above-mentioned 13 any one of > of < 1 > to <, wherein the thickness of the second layer is equal to Or the thickness greater than the first layer.

15 > of <

The absorbent commodity recorded in such as above-mentioned 14 > of <, wherein the thickness of the thickness of the first layer and the second layer Difference when the former calculates with the latter-, preferably 0.05mm or more, and then preferably 0.1mm or more, also, it is preferred that being 0.5mm Hereinafter, being in turn preferably 0.4mm or less.

16 > of <

The absorbent commodity recorded in such as above-mentioned 15 any one of > of < 1 > to <, wherein the fiber spacing of the second layer With a distance between the fiber for being equal to or less than the first layer.

17 > of <

The absorbent commodity recorded in such as above-mentioned 16 > of <, wherein distance and the second layer between the fiber of the first layer Fiber between distance difference with the former-the latter calculate when, preferably 5 μm or more, and then preferably 15 μm or more, also, it is preferred that For 35 μm hereinafter, being in turn preferably 30 μm or less.

18 > of <

Such as the absorbent commodity recorded in above-mentioned 17 any one of > of < 1 > to <, the plurality of hydrophilic region is respectively Area be 1cm²Hereinafter, the area ratio of the hydrophilic region of the first layer in the absorption of perspiration piece is 20% or less.

19 > of <

The absorbent commodity recorded in such as above-mentioned 18 any one of > of < 1 > to <, wherein multiple institutes in the first layer Stating the respective area of hydrophilic region is 0.9cm²Hereinafter, furthermore it is preferred that being 0.01cm²More than, and then preferably 0.02cm²More than.

20 > of <

The absorbent commodity recorded in such as above-mentioned 19 any one of > of < 1 > to <, wherein the parent in the first layer The area ratio of water area is 15% hereinafter, furthermore it is preferred that be 5% or more, and then preferably 8% or more.

21 > of <

The absorbent commodity recorded in such as above-mentioned 20 any one of > of < 1 > to <, wherein the first layer and described second Layer be engaged with each other via joint portion, which partly overlaps with the hydrophilic region, the hydrophilic region with not with the engagement The part of portion's overlapping.

22 > of <

The absorbent commodity recorded in such as above-mentioned 21 any one of > of < 1 > to <, wherein adjacent across the hydrophobic region 2 hydrophilic regions it is mutual be spaced on the longitudinal direction in the front-back direction corresponding to wearer as 5mm or more, vertical with this It is 1mm or more in orthogonal transverse direction.

23 > of <

The absorbent commodity recorded in such as above-mentioned 22 any one of > of < 1 > to <, wherein adjacent across the hydrophobic region 2 hydrophilic regions mutual be spaced on the longitudinal direction in the front-back direction corresponding to wearer for 6mm or more, in addition, excellent 20mm is selected as hereinafter, being in turn preferably 15mm or less.

24 > of <

The absorbent commodity recorded in such as above-mentioned 23 any one of > of < 1 > to <, wherein adjacent across the hydrophobic region 2 hydrophilic regions mutual be spaced in the transverse direction orthogonal with the front-rear direction of wearer for 2mm or more, in addition, excellent 10mm is selected as hereinafter, being in turn preferably 9mm or less.

25 > of <

The absorbent commodity recorded in such as above-mentioned 24 any one of > of < 1 > to <, wherein the parent in the first layer Water area makes hydrophilic agent be attached to hydrophobic nonwoven and be formed, the hydrophilic agent facies posterior hepatis as in hydrophobic nonwoven.

26 > of <

Such as the absorbent commodity recorded in above-mentioned 25 > of <, wherein hydrophobic fibre in the hydrophobic nonwoven contains Having rate is preferably 50 mass % or more, and then preferably 100 mass %.

27 > of <

Such as the absorbent commodity recorded in above-mentioned 25 > of < or 26 > of <, wherein the hydrophilic agent in the first layer Adhesion amount is when being converted into ratio of the solid content ingredient relative to the gross mass of the first layer, preferably 0.01 mass % or more, into And preferably 0.1 mass % or more, also, it is preferred that being 5 mass % hereinafter, being in turn preferably 1 mass % or less.

28 > of <

The absorbent commodity recorded in such as above-mentioned 27 any one of > of < 1 > to <, wherein described in the first layer Hydrophilic region or the hydrophilic non-woven for constituting the second layer, are attached with the hydrophilic agent of water-insoluble.

29 > of <

The absorbent commodity recorded in such as above-mentioned 28 > of <, wherein the hydrophilic agent of the water-insoluble is polyoxyethylene laural Ether or lauryl hydroxyl sulfo betaine.

30 > of <

Such as the absorbent commodity recorded in above-mentioned 29 any one of > of < 1 > to <, wherein the absorbent commodity has pair Should be in the transverse direction longitudinal and orthogonal with the longitudinal direction in the front-back direction of wearer, and there is crotch part of the configuration in wearer Crotch and the veutro portion extended to its front and back and drosal part, and have the absorbent main body comprising absorber and configuration in the suction Receive property main body non-skin with respect to surface side exterior body, the exterior body include formed under wearing effect the absorbent commodity outside The laminated body of the outer-skin sheet on surface and the inner layer piece being oppositely disposed with the skin opposite face of the outer-skin sheet,

The outer-skin sheet has return portion in the veutro portion and the drosal part, which indulges from the inner layer piece Extend to end, turns back to the skin of the inner layer piece with respect to surface side, which covers the longitudinal end of the absorbent main body Lid.

31 > of <

The absorbent commodity recorded in such as above-mentioned 30 > of <, wherein the outer-skin sheet includes the veutro for constituting the veutro portion The crotch outer-skin sheet of outer-skin sheet, the back side outer-skin sheet for constituting the drosal part and the composition crotch between two pieces, These outer-skin sheets constitute the respective longitudinal end of piece and overlap each other and be interconnected and integrated in lap,

In the respective lap with the crotch outer-skin sheet of the veutro outer-skin sheet and the back side outer-skin sheet, it is respectively The crotch outer-skin sheet is located at the side away from the absorbent main body relative close, the non-flesh at longitudinal both ends of the crotch outer-skin sheet Skin opposite face is covered by the veutro outer-skin sheet and the back side outer-skin sheet.

32 > of <

The absorbent commodity recorded in such as above-mentioned 31 > of <, wherein the veutro outer-skin sheet and back side outer-skin sheet difference It is stretchable sheet horizontally with retractility, the crotch outer-skin sheet and the inner layer piece are respectively without the non-of retractility Stretchable sheet.

33 > of <

Such as the absorbent commodity recorded in above-mentioned 32 any one of > of < 30 > to <, wherein the absorption of perspiration piece and described outer The skin opposite face of the return portion of synusia overlappingly configures.

34 > of <

The absorbent commodity recorded in such as above-mentioned 33 any one of > of < 30 > to <, wherein the absorption of perspiration piece is when looking down For longer shape, specifically rectangular shape in one direction, length direction with it is laterally uniform, in the veutro portion and The drosal part spreads the absorbability in a manner of forming the position near surface of inner surface side of the absorbent commodity The lateral endlong configuration of article.

Industrial availability

According to the present invention, sweat can quickly be absorbed by providing one kind, it is made to spread, steam in a manner of the skin far from wearer Hair, and the absorbent commodity for the skin problem such as be not easy to cause heat-rash.

Claims (34)

1. a kind of absorbent commodity is wearing the position of Shi Nengyu wearer's skin contact configured with absorption of perspiration piece, the absorption Property article is characterized in that:

The absorption of perspiration piece has away from the nearest first layer of wearer's skin and with the non-skin opposite face of the first layer overlappingly The second layer of configuration,

When overlooking the first layer, there are multiple hydrophilic regions for dispersion, exist around multiple hydrophilic region is respective and dredge Water area,

The second layer is hydrophilic non-woven.

2. absorbent commodity as described in claim 1, it is characterised in that:

The contact angle of the hydrophilic region is 80 degree or less.

3. absorbent commodity as claimed in claim 1 or 2, it is characterised in that:

The contact angle of the hydrophilic region is 70 degree or less.

4. absorbent commodity according to any one of claims 1 to 3, it is characterised in that:

The contact angle of the hydrophilic region is equal to or less than the contact angle of the hydrophilic non-woven.

5. absorbent commodity as claimed in claim 4, it is characterised in that:

The difference of the contact angle of the hydrophilic region and the contact angle of the hydrophilic non-woven is 5 degree when with the latter-, the former is calculated Above and 30 degree or less.

6. such as absorbent commodity according to any one of claims 1 to 5, it is characterised in that:

The contact angle of the hydrophilic non-woven is 85 degree or less.

7. such as absorbent commodity according to any one of claims 1 to 6, it is characterised in that:

The grammes per square metre of the first layer is 20g/m²Below.

8. such as absorbent commodity according to any one of claims 1 to 7, it is characterised in that:

The grammes per square metre of the first layer is 17g/m²Below and 9g/m²More than.

9. such as absorbent commodity according to any one of claims 1 to 8, it is characterised in that:

The grammes per square metre of the second layer is equal to or more than the grammes per square metre of the first layer.

10. absorbent commodity as claimed in claim 9, it is characterised in that:

The difference of the grammes per square metre of the grammes per square metre of the first layer and the second layer is 1g/m when with the latter-, the former is calculated²Above and 11g/ m²Below.

11. such as absorbent commodity according to any one of claims 1 to 10, it is characterised in that:

The grammes per square metre of the second layer is 10g/m²Above and 23g/m²Below.

12. the absorbent commodity as described in any one of claim 1~11, it is characterised in that:

The first layer with a thickness of 0.7mm or less.

13. the absorbent commodity as described in any one of claim 1~12, it is characterised in that:

The first layer with a thickness of 0.5mm or less and 0.19mm or more.

14. the absorbent commodity as described in any one of claim 1~13, it is characterised in that:

The thickness of the second layer is equal to or more than the thickness of the first layer.

15. absorbent commodity as claimed in claim 14, it is characterised in that:

The difference of the thickness of the thickness of the first layer and the second layer when with the latter-, the former is calculated for 0.05mm or more and 0.5mm or less.

16. the absorbent commodity as described in any one of claim 1~15, it is characterised in that:

Distance is equal to or less than distance between the fiber of the first layer between the fiber of the second layer.

17. absorbent commodity as claimed in claim 16, it is characterised in that:

Between the fiber of the first layer between distance and the fiber of the second layer distance difference with the former-the latter calculate when be 5 μm Above and 35 μm or less.

18. the absorbent commodity as described in any one of claim 1~17, it is characterised in that:

Multiple respective areas of the hydrophilic region are 1cm²Hereinafter, the first layer in the absorption of perspiration piece is described hydrophilic The area ratio in region is 20% or less.

19. the absorbent commodity as described in any one of claim 1~18, it is characterised in that:

Multiple respective areas of hydrophilic region in the first layer are 0.9cm²Below and 0.01cm²More than.

20. the absorbent commodity as described in any one of claim 1~19, it is characterised in that:

The area ratio of the hydrophilic region in the first layer is 15% or less and 5% or more.

21. the absorbent commodity as described in any one of claim 1~20, it is characterised in that:

The first layer is engaged with each other with the second layer via joint portion, which partly overlaps with the hydrophilic region, The hydrophilic region has the not part Chong Die with the joint portion.

22. the absorbent commodity as described in any one of claim 1~21, it is characterised in that:

2 hydrophilic regions adjacent across the hydrophobic region are mutual to be spaced in corresponding to wearer in the front-back direction It is 5mm or more on longitudinal direction, is 1mm or more in transverse direction orthogonal with the longitudinal direction.

23. the absorbent commodity as described in any one of claim 1~22, it is characterised in that:

2 hydrophilic regions adjacent across the hydrophobic region are mutual to be spaced in corresponding to wearer in the front-back direction It is 6mm or more and 20mm or less on longitudinal direction.

24. the absorbent commodity as described in any one of claim 1~23, it is characterised in that:

2 hydrophilic regions adjacent across the hydrophobic region are mutual be spaced in it is orthogonal with the front-rear direction of wearer It is 2mm or more and 10mm or less in transverse direction.

25. the absorbent commodity as described in any one of claim 1~24, it is characterised in that:

The hydrophilic region in the first layer makes hydrophilic agent be attached to hydrophobic nonwoven and be formed.

26. absorbent commodity as claimed in claim 25, it is characterised in that:

The containing ratio of hydrophobic fibre in the hydrophobic nonwoven is 50 mass % or more.

27. the absorbent commodity as described in claim 25 or 26, it is characterised in that:

The adhesion amount of the hydrophilic agent in the first layer is being converted into gross mass of the solid content ingredient relative to the first layer Ratio when, be 0.01 mass % or more and 5 mass % or less.

28. the absorbent commodity as described in any one of claim 1~27, it is characterised in that:

The hydrophilic region or the hydrophilic non-woven in the first layer, are attached with the hydrophilic agent of water-insoluble.

29. absorbent commodity as claimed in claim 28, it is characterised in that:

The hydrophilic agent of the water-insoluble is polyoxyethylene laurel ether or lauryl hydroxyl sulfo betaine.

30. the absorbent commodity as described in any one of claim 1~29, it is characterised in that:

The absorbent commodity, which has, corresponds to wearer longitudinal direction and the transverse direction orthogonal with the longitudinal direction in the front-back direction, and has The crotch for the crotch part configured in wearer and to the veutro portion and drosal part extended before and after it, and have and include absorber The exterior body of absorbent main body and the opposite surface side of the non-skin configured in the absorbent main body, the exterior body are included in wearing effect The outer-skin sheet of the lower outer surface for forming the absorbent commodity and the inner layer piece being oppositely disposed with the skin opposite face of the outer-skin sheet Laminated body,

The outer-skin sheet has return portion, longitudinal end of the return portion from the inner layer piece in the veutro portion and the drosal part Extend, turns back to the skin of the inner layer piece with respect to surface side, which covers the longitudinal end of the absorbent main body.

31. absorbent commodity as claimed in claim 30, it is characterised in that:

The outer-skin sheet includes the veutro outer-skin sheet for constituting the veutro portion, constitutes the back side outer-skin sheet of the drosal part and be located at The crotch outer-skin sheet of the composition crotch between two pieces, these outer-skin sheets constitute the respective longitudinal end of piece overlap each other and It is interconnected and integrated in lap,

It is the crotch respectively in the respective lap with the crotch outer-skin sheet of the veutro outer-skin sheet and the back side outer-skin sheet Portion's outer-skin sheet is located at the side away from the absorbent main body relative close, the non-skin phase at longitudinal both ends of the crotch outer-skin sheet Opposite is covered by the veutro outer-skin sheet and the back side outer-skin sheet.

32. absorbent commodity as claimed in claim 31, it is characterised in that:

The veutro outer-skin sheet and the back side outer-skin sheet are stretchable sheet horizontally with retractility respectively, outside the crotch Synusia and the inner layer piece are respectively non-telescoping without retractility.

33. the absorbent commodity as described in any one of claim 30~32, it is characterised in that:

The absorption of perspiration piece and the skin opposite face of the return portion of the outer-skin sheet overlappingly configure.

34. the absorbent commodity as described in any one of claim 30~33, it is characterised in that:

The absorption of perspiration piece is longer shape, specifically rectangular shape in one direction, length direction when looking down With it is laterally uniform, in the veutro portion and the drosal part, with formed the absorbent commodity inner surface side near surface Position mode, throughout the lateral endlong configuration of the absorbent commodity.