JP2016154683A - Absorbent pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent pad that can reliably be fixed in a wearing article and alignment is easy, and thereby comfortable wearing feeling can be obtained.SOLUTION: An absorbent pad 1 is removably fixed on a skin facing surface of a wearing article of a separate member, and is worn with the wearing article. A first hook material 6A and a second hook material 6B capable of being engaged with the wearing article are arranged in a wearing article abutment surface 1b being brought into abutment with the skin facing surface of the wearing article during wearing, as a fixing member for removably fixing the absorbent pad 1 to the wearing article. Both hook materials 6A, 6B are separately disposed in one side and the other side in the longitudinal direction X across a central part in the longitudinal direction X of the wearing article abutment surface 1b. The second hook materials 6B is weak in peel force as compared to the first hook material 6A.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an absorbent pad (inner) that is used overlapping with a worn article (outer) such as an absorbent article.

  2. Description of the Related Art Conventionally, for the purpose of reducing the economical and labor burden associated with the treatment of excrement such as urine, an absorbent pad has been used on the skin facing surface of a worn article such as a disposable diaper. For example, a urine absorption pad, which is a type of absorption pad, is fixed on the surface sheet of a disposable diaper worn by adults (often elderly people) whose physical function is weakened or weakened by disease, and absorbs incontinence urine When used for holding, if the amount of excreted urine is relatively small, only the urine collection pad needs to be replaced, and the frequency of replacement of the disposable diaper can be reduced.

  Some absorbent pads have a fixing member attached to the skin facing surface of an article to be worn such as an absorbent article so as to be detachable. As this fixing member, one using a mechanical fastener is known. (For example, Patent Document 1). The mechanical fastener includes a so-called male member made of a hook material having a large number of hooks on the outer surface, and a so-called female member to which the male member is detachably attached, and a loop shape in which the female member has a hook of the male member. The male member is fixed to the female member so as to be hooked on the fiber or the non-woven fiber. The skin facing surface of an absorbent article such as a disposable diaper to which an absorbent pad is fixed is often formed of a nonwoven fabric, and the nonwoven fabric has a plurality of fibers that can be entangled with many loop-like fibers and hook materials. Therefore, by using a hook material (male member) as a fixing member for the absorbent pad, the absorbent pad can be easily fixed to the skin facing surface of the wearing article, for example, a non-woven fabric surface sheet, via the hook material as the fixing member. can do.

  With regard to an absorbent pad using a male member of a mechanical fastener, for example, Patent Document 2 discloses an engagement force as a fixing member on a wearing article abutting surface that abuts a skin facing surface of a wearing article such as underwear at the time of wearing. An absorbent pad is described in which two different types of mechanical fastening elements are arranged. In the absorbent pad described in Patent Document 2, of the two types of mechanical fastening elements, the relatively high engaging force is disposed in the central region of the absorbent pad, and the relatively low engaging force is Arranged between the central region and the outer edge of the absorbent pad. According to the absorbent pad described in Patent Document 2, it can be surely attached to the undergarment, and damage to the undergarment that can be caused by the mechanical fastening element can be minimized.

  Further, in Patent Document 3, the position of the absorbent pad does not deviate from the proper position when the worn article such as underwear is pulled up to the wearer's crotch side with the absorbent pad fixed or due to the movement of the wearer's body. For the purpose of doing so, the absorbent pad is bisected in the longitudinal direction and divided into a first half and a second half, and a hook material is disposed on the clothing facing surface of both halves and the first half It is described that the direction of the hook material is different between the portion and the second half portion.

Japanese Patent Laid-Open No. 2003-210524 JP 2012-183379 A Japanese National Patent Publication No. 8-507227

  When fixing the absorbent pad to the skin facing surface of a wearing article such as a disposable diaper, it is necessary to fix the absorbent pad at a predetermined proper position so that the predetermined effect can be sufficiently exerted. Is often required. In addition, a plurality of hook members as fixing members are usually arranged on the wearing article abutting surface that abuts against the wearing article when worn on the absorbent pad, as in the absorbent pads described in Patent Documents 1 to 3. Therefore, the positioning of the absorbent pad having a plurality of hook materials with respect to the wearing article is first performed by a part of the plurality of hook materials of the absorbent pad, for example, a hook disposed at one longitudinal end of the absorbent pad. Engage only the material with the worn article to place the absorbent pad in a semi-fixed state with respect to the worn article, then move the absorbent pad as appropriate while remaining in the semi-fixed state, and the remaining hook material, In many cases, the hook pad disposed at the other end in the longitudinal direction of the pad is engaged with the wearing article and the absorbent pad is temporarily fixed. Then, if there is no problem in the wearing feeling or the like due to the temporary fixing, it is worn as it is.

  In this absorbent pad alignment method, if the absorbent pad cannot be fixed at the proper position by the first temporary fixation, part of the temporary fixation is released and returned to the semi-fixed state again to find an appropriate fixed position. Therefore, the operation of engaging the hook material of the absorbent pad with the worn article is performed a plurality of times. The absorbent pads described in Patent Documents 1 to 3 are mainly concerned with improving the fixing force with respect to the wearing article, and since the engaging force of the plurality of hook members is at a high level, such alignment work is performed. It was difficult to obtain a comfortable wearing feeling. If the engagement force of the hook material is reduced, the engagement and release of the hook material are facilitated, so that the alignment work is facilitated, but in that case, the engagement force of the absorbent pad to the wearing article is reduced, There is a possibility that inconveniences such as the absorbent pad deviating from an appropriate position during wearing, or being displaced from the worn article when the absorbent pad is replaced may occur. There has not yet been provided an absorbent pad that can be firmly fixed to a wearing article, can be easily positioned, and provides a comfortable wearing feeling.

  Therefore, the present invention relates to an absorbent pad that can be reliably fixed to a wearing article, can be easily positioned, and can provide a comfortable wearing feeling.

  The present invention includes a liquid-retaining absorbent body, and has a longitudinal direction corresponding to the wearer's front-rear direction and a lateral direction perpendicular thereto, and is detachably fixed on the skin facing surface of a separate wearing article. An absorbent pad that is worn together with the wearing article, and is removably fixed to the wearing article on a wearing article abutting surface that abuts against a skin facing surface of the wearing article when worn. As the fixing member, a first hook material and a second hook material that can be engaged with the wearing article are arranged, and both hook materials are arranged in a vertical direction with a longitudinal center portion of the wearing article contact surface interposed therebetween. The second hook material is spaced apart from one side and the other side, and provides an absorbent pad having a weaker peeling force than the first hook material.

  ADVANTAGE OF THE INVENTION According to this invention, it can fix to a wearing article reliably, it is hard to produce inconveniences, such as an absorption pad shifting | deviating from an appropriate position during wear, and falling out of a wearing article at the time of replacement | exchange of an absorption pad, and positioning is easy. Thus, an absorbent pad that provides a comfortable wearing feeling is provided.

FIG. 1 is a plan view schematically showing a skin facing surface, that is, a surface sheet side of an embodiment of the absorbent pad of the present invention, and is a plan view in a developed state in which elastic members of respective parts are extended and expanded in a planar shape. is there. FIG. 2 is a cross-sectional view schematically showing a cross section taken along line II of FIG. FIG. 3A is a schematic side view of the first hook member in the absorbent pad shown in FIG. 1, and FIG. 3B is a schematic top view of the hook shown in FIG. FIG. 3C is a schematic side view of the first hook member having a shape different from that in FIG. 3A, and FIG. 3D is a schematic view of the hook shown in FIG. It is a top view. FIG. 4 is a schematic side view of a second hook member in the absorbent pad shown in FIG. 1, and FIG. 4B is a schematic top view of the hook shown in FIG. FIG. 5 is a plan view schematically showing a partially broken second hook material and its vicinity on the wearing article contact surface of the absorbent pad shown in FIG. 6 is a longitudinal sectional view schematically showing a section taken along line II-II in FIG. FIG. 7 is a cross-sectional view showing how the absorbent pad shown in FIG. 1 is used. FIG. 8A and FIG. 8B are examples of the planar view shape of the hook material according to the present invention. FIG. 9A, FIG. 9B, and FIG. 9C are examples of the planar view shape of the opening of the absorber according to the present invention.

  Hereinafter, the absorption pad of this invention is demonstrated with reference to drawings based on the preferable one Embodiment. As shown in FIGS. 1 and 2, the absorbent pad 1 of the present embodiment includes a liquid-retaining absorbent body 4, and has a longitudinal direction X corresponding to the wearer's front-rear direction and a lateral direction Y orthogonal thereto. 7 and is detachably fixed on the skin facing surface (inner surface) 100f of the disposable diaper 100 as a separate wearing article and is worn together with the disposable diaper 100.

  More specifically, the absorbent pad 1 is disposed on the liquid-retaining absorbent body 4, the surface sheet 2 disposed on the skin facing surface side of the absorbent body 4, and the non-skin facing surface side of the absorbent body 4. 1, and has a rectangular shape in plan view as shown in FIG. 1, the longitudinal direction thereof coincides with the longitudinal direction X, and the width direction thereof coincides with the lateral direction Y.

  In the present specification, the “skin-facing surface” is a surface (relatively to the wearer's skin) of the absorbent pad or a component thereof (for example, the absorbent body 4) that is directed toward the wearer's skin when the absorbent pad is worn. The “non-skin facing surface” is a surface that is directed to the side opposite to the skin side (the side that is relatively far from the wearer's skin) when the absorbent pad is worn in the absorbent pad or a component thereof. It is. In addition, "at the time of wearing" here means a state in which a normal proper wearing position (correct wearing position of the absorbent pad) is maintained, and includes when the absorbent pad is in a state shifted from the worn position. Absent.

  As shown in FIG. 1, the absorbent pad 1 includes a crotch portion 1M disposed in the crotch portion of the wearer when worn, a front portion 1F disposed on the abdomen side of the wearer than the crotch portion 1M when worn, It sometimes has a rear portion 1R in the longitudinal direction X that is arranged on the back side of the wearer rather than the crotch portion 1M. The crotch part 1M has an excretion part facing part that is disposed to face the excretion part of the wearer when the absorbent pad 1 is worn, and the excretion part facing part is usually a central part in the longitudinal direction X of the absorption pad 1 or It is located in the vicinity.

Each of the top sheet 2 and the back sheet 3 has a size larger than that of the absorber 4, extends outward from the peripheral edge of the absorber 4, and is joined to each other at the extending portion. The back sheet 3 forms the outer shape of the absorbent pad 1 in the unfolded and expanded state as shown in FIG.
The top sheet 2 is liquid permeable and can transmit liquid such as urine. As the surface sheet 2, a liquid-permeable sheet material can be used. For example, various nonwoven fabrics such as a nonwoven fabric produced by a card method, an air-through nonwoven fabric, a spunbond nonwoven fabric, a meltblown nonwoven fabric, a spunlace nonwoven fabric, and a needle punch nonwoven fabric. A resin film which can be permeated by an opening means, such as a porous resin film; The nonwoven fabric used as the top sheet 2 is preferably a hydrophilic nonwoven fabric.
The back sheet 3 is preferably a liquid impermeable sheet. The back sheet 3 which is a liquid impermeable sheet may be a moisture permeable sheet, a composite sheet obtained by bonding a moisture permeable film and a nonwoven fabric by hot melt or heat, or a water repellent nonwoven fabric. Further, the back sheet 3 may be a liquid-permeable non-woven fabric similar to the top sheet 2 in order to make the worn article such as a disposable diaper absorb the urine excreted by the absorbent pad 1.

  As shown in FIG. 2, the absorbent body 4 includes a liquid-retaining absorbent core 40 and a liquid-permeable core wrap sheet 41 that covers the skin facing surface and the non-skin facing surface of the absorbent core 40. It consists of The absorptive core 40 has an hourglass shape in which a central portion in the longitudinal direction X located at the crotch portion 1M is inwardly bounded in a plan view as shown in FIG. The core wrap sheet 41 is a single continuous sheet having a width that is two to three times the length of the absorbent core 40 in the lateral direction Y. The core wrap sheet 41 covers the whole area of the skin facing surface of the absorbent core 40 and extends outward from both side edges along the longitudinal direction X of the absorbent core 40 in the lateral direction Y. It is rolled down below the absorbent core 40 to cover the entire area of the non-skin facing surface of the absorbent core 40. The absorbent core 40 and the core wrap sheet 41 may be joined by a known joining means such as a hot-melt adhesive. Examples of the absorbent core 40 include a fiber aggregate made of hydrophilic fibers such as synthetic fiber treated with wood pulp and a hydrophilizing agent, or a fiber aggregate in which a particulate water-absorbing polymer is held. Can be used. As the core wrap sheet 41, a liquid permeable sheet material such as paper and nonwoven fabric can be used. As the nonwoven fabric, for example, an air-through nonwoven fabric, a spunbond nonwoven fabric, a spunbond (S) and a melt blown (M) are combined. Nonwoven fabrics (so-called nonwoven fabrics such as SMS, SMMS, SSMS, etc.) can be used. Further, the core wrap sheet 41 is not limited to a form composed of a single continuous sheet as shown in the figure, and may include a plurality of sheets that are separate from each other. For example, the skin facing surface of the absorbent core 40 The skin-side core wrap sheet covering the skin and the non-skin-side core wrap sheet covering the non-skin facing surface of the absorbent core 40 may be included.

  As shown in FIGS. 1 and 2, a pair of leak-proof cuffs 5, 5 are provided on the left and right sides along the vertical direction X on the skin facing surface side of the absorbent pad 1, that is, on the topsheet 2 side. It is continuously arranged over the entire length of X. Each of the pair of leak-proof cuffs 5, 5 is one leak-proof cuff forming sheet 50 continuous over the entire length in the longitudinal direction X of the absorbent pad 1, and one piece fixed to the sheet 50 in an expanded state. Alternatively, a plurality of (one in this embodiment) thread-like leakproof cuff forming elastic members 51 are included.

  The leak-proof cuff forming sheet 50 has an inner edge portion 50p along the vertical direction X, and an outer edge portion 50q along the vertical direction X located outside the inner edge portion 50p in the lateral direction Y. In plan view as shown in FIG. 1, the inner edge portion 50 p overlaps with the absorber 4, and the outer edge portion 50 q extends from the side edge along the longitudinal direction X of the absorber 4 to the outside in the lateral direction Y. The leak-proof cuff forming elastic member 51 is fixed to the inner edge 50p of the leak-proof cuff forming sheet 50 in an extended state. The leakproof cuff forming sheet 50 has the outer edge 50q side joined to the top sheet 2 and the back sheet 3 outside the absorbent body 4 in the lateral direction Y, and the elastic member 51 is attached when the absorbent pad 1 is worn. When contracted, the inner edge 50p side stands up toward the wearer's skin side at the time of wearing at least at the crotch 1M with the joint 52 as a starting point. The joint portion 52 is formed by applying an adhesive such as a hot melt adhesive, and has a continuous linear shape extending in the longitudinal direction X in plan view as shown in FIG. As the leak-proof cuff forming sheet 50, a liquid-impermeable or liquid-impermeable or water-repellent sheet material can be used. For example, a liquid-impermeable or water-repellent nonwoven material (air-through nonwoven fabric, spunbond nonwoven fabric, Nonwoven fabrics such as SMS, SMMS, and SSMS), liquid-impermeable or water-repellent resin films, laminates of resin films and nonwoven fabrics, and the like can be used.

  As shown in FIGS. 1 and 2, a thread-like leg elastic member 53 is provided between the leak-proof cuff forming sheet 50 and the back sheet 3 in the left and right leg portions arranged around the legs of the wearer. Along with the vertical direction X, it is fixed in an extended state, whereby a pair of leg gathers is formed in the leg portion when the absorbent pad 1 is worn by contraction of the elastic member 53.

  The absorbent pad 1 has a wearing article abutting surface 1b that abuts against the skin-facing surface of a wearing article separate from the absorbent pad 1 when worn. The wearing article contact surface 1 b of the absorbent pad 1 is a non-skin facing surface of the absorbent pad 1 and is formed from the back sheet 3. In addition, the skin facing surface 1f located on the opposite side to the wearing article contact surface (non-skin facing surface) 1b in the absorbent pad 1 is formed from the top sheet 2 and the leak-proof cuff forming sheet 50.

  As shown in FIG. 1, the wearing pad contact surface 1 b of the absorbent pad 1 is engaged with a worn article such as the disposable diaper 100 shown in FIG. 7 as a fixing member that detachably fixes the absorbent pad 1 to the diaper 100. Possible first hook material 6A and second hook material 6B are arranged. In the present embodiment, the two hook members 6A and 6B are spaced apart from each other on one side and the other side in the vertical direction across the central portion in the vertical direction X of the wearing article contact surface 1b. More specifically, the hook material is not arranged at the center portion in the vertical direction X of the wearing article contact surface 1b, that is, the crotch portion 1M, and the front is located outside the crotch portion 1M in the vertical direction X. One first hook member 6A is disposed in the portion 1F, and one second hook member 6B is disposed in the rear portion 1R. The hook members 6A and 6B overlap the absorber 4 in a plan view as shown in FIG.

  The two hook members 6A and 6B are provided from the viewpoint of ease of alignment by the caregiver or care recipient of the wearing article of the absorbent pad 1, ease of reworking of the absorbent pad 1 during wearing, and further enhancing the feeling of wearing. The separation distance L1 (see FIG. 1) is preferably 50% or more, more preferably 60% or more, and preferably 85% or less, more preferably 80% or less, with respect to the total length of the absorbent pad 1 in the longitudinal direction X. More specifically, it is preferably 50% or more and 85% or less, and more preferably 60% or more and 80% or less. Further, from the same viewpoint, the separation distance L1 is preferably 200 mm or more, more preferably 240 mm or more, and preferably 540 mm or less, more preferably 500 mm or less, more specifically, preferably 200 mm or more and 540 mm or less, more preferably. Is 240 mm or more and 500 mm or less.

  FIG. 3 shows an enlarged part of the first hook member 6A, and FIG. 4 shows an enlarged part of the second hook member 6B. Each of the hook members 6A and 6B includes a support body 60 and a plurality of hooks 61A and 61B provided on the surface of the support body 60. Each of the hooks 61A and 61B has a base end portion 61s that stands up from the surface of the support body 60, and an overhang portion 61t that protrudes from the front end of the base end portion 61s in a predetermined direction. 3 includes a mushroom-type hook 61A shown in FIGS. 3A and 3B and an arrowhead-type hook 61A shown in FIGS. 3C and 3D. Although two types of first hook members 6A are shown, only one of them may be used as the first hook member 6A, or a combination of both may be used. The mushroom-type hook 61A shown in FIGS. 3A and 3B has a shape in which the protruding portion 61t protrudes outward from the entire peripheral edge of the base end portion 61s in a top view as shown in FIG. 3B. I am doing. 3 (c) and 3 (d), the arrow-tip type hook 61A has an overhanging portion 61t outward from only a part of the periphery of the base end portion 61s in a top view as shown in FIG. 3 (d). It has a protruding shape. The following description of the hook 61A or the first hook member 6A applies to both the mushroom type and the arrowhead type unless otherwise specified, and the same reference numerals are given to the same components in the drawings.

  The hooks 61 </ b> A and 61 </ b> B may be regularly arranged on the surface of the support body 60 or may be randomly arranged. The support 60 has a sheet shape and forms the outer shape of the hook members 6A and 6B. As shown in FIG. 1, the support body 60 in the present embodiment has a shape that is long in one direction in plan view, more specifically, a rectangular shape, and the longitudinal direction of the support body 60 matches the lateral direction Y. It is fixed to the contact surface 1b by a known fixing means such as an adhesive. Each of the hooks 61A and 61B has a base end portion 61s that stands up from the surface of the support body 60, and an overhang portion 61t that protrudes from the front end of the base end portion 61s in a predetermined direction. As shown in FIGS. 3 and 4, the length in the lateral direction Y (the minimum width in the lateral direction) of the narrowest portion in the lateral direction Y of the base end portion 61s is defined as the stem width Sy, and the lateral direction Y of the overhanging portion 61t. The length in the horizontal direction Y (the maximum width in the horizontal direction) of the most protruding portion is defined as the width Wy. Further, the length in the vertical direction X (the minimum width in the vertical direction) of the narrowest portion in the vertical direction X of the base end portion 61s is defined as the stem width Sx, and the vertical direction X of the portion of the protruding portion 61t that extends most in the vertical direction X. Is the width Wx. The overhang portion 61t is a portion that directly engages a wearing article such as a disposable diaper, and the overhang direction of the hooks 61A and 61B is determined by the overhang direction of the overhang portion 61t. The engaging force of the hook members 6A and 6B is the difference between the maximum widths Wx and Wy of the overhang portions 61t and the stem widths (minimum widths) Sx and Sy of the base end portions 61s in the hooks 61A and 61B. It depends on the overhang value that represents the degree. Accordingly, the overhang value Hy in the lateral direction Y of each of the hooks 61A and 61B is the width Wy-stem width Sy of the portion of the overhang 61t that is most projecting in the lateral direction Y, and the overhang value Hx in the vertical X is the overhang. The width of the portion 61t that protrudes most in the vertical direction X is defined as width Wx−stem width Sx. The overhang value Hy is a direction that overlaps the width direction (Cross machine Direction) of the hook material manufacturing method, and is important in designing the engagement force of the hook material.

  The hooks 61A of the first hook member 6A and the hooks 61B of the second hook member 6B have different overhang values Hy, Hx or shapes. The shape of the hook 61A is as described above. Specific examples include the mushroom type shown in FIGS. 3A and 3B and the arrowhead type shown in FIGS. 3C and 3D. Can be mentioned. On the other hand, the hook 61B is a pin-type hook material having a shape in which the protruding portion 61t protrudes outward from the peripheral edge of the base end portion 61s in a top view as shown in FIG. 4B.

  As shown in FIG. 3 (b), the mushroom-type hook 61A has a maximum lateral width Wy of the overhang portion 61t that is longer than the maximum vertical width Wx, and as a result, the base end portion of the overhang portion 61t. The overhanging length from 61 s is longer in the horizontal direction Y than in the vertical direction X. Similarly to the hook 61A, the pin-type hook 61B has a longer lateral maximum width Wy of the protruding portion 61t than the vertical maximum width Wx, as shown in FIG. 4B. However, in the pin-type hook 61B, the maximum vertical width Wx of the overhang 61t is substantially the same as the stem width (vertical minimum width) Sx of the base end 61s. Hardly protrudes from the periphery of the base end portion 61s, and substantially protrudes from the periphery of the base end portion 61s only in the lateral direction Y.

  As one of the main characteristics of the absorbent pad 1 of the present embodiment, the first hook material 6A and the second hook material 6B have different peeling forces, and the second hook material 6B is used as the first hook material 6A. The peeling force is weaker than that of the second hook material 6B, that is, the second hook material 6B is easier to peel off from the wearing article. The second hook material 6B is not limited to the pin type as shown in FIG. 4, but may be a mushroom type hook material as shown in FIGS. 3A and 3B, for example. Any material having a weaker peeling force than the hook material 6A may be used.

  The absorbent pad 1 is used by being fixed to the skin facing surface of a wearing article such as a disposable diaper through the hook members 6A and 6B. The skin facing surface of the wearing article to which the absorbent pad 1 is fixed is formed of a loop material or non-woven fiber having loop-like fibers, and the hooks 61A and 61B of the hook materials 6A and 6B are provided on the loop-like fibers or non-woven fibers. When the absorbent pad 1 is fixed to the wearing article by hooking the pad, the larger the fixing force, that is, the engaging force, the more firmly the absorbent pad 1 is fixed to the wearing article. It is difficult to cause inconveniences such as deviation from the wearing article when the absorbent pad 1 is replaced. The loop material may be a so-called non-woven fabric other than the one having loop-like fibers, specifically, for example, an air-through non-woven fabric, a spunbond non-woven fabric, an SMS non-woven fabric, or an SSMS non-woven fabric, and more specifically. The nonwoven fabric used for the surface sheet which forms the skin opposing surface 100f of the diaper 100 shown in FIG. 7 may be sufficient.

  The engaging force of the hook material can be expressed by a peeling force and a shearing force. The peeling force is a force mainly generated by the entanglement between the hook material and the loop material, and from the state where the absorbent pad and the wearing article are fixed via the hook material of the absorbent pad and the loop material of the wearing article, It is a force that resists when the absorbent pad is to be peeled away so that the fixed surfaces of both are separated. On the other hand, when the absorption pad or the wearing article is pulled along the to-be-fixed surface so that the to-be-fixed surfaces of both are not separated from the state where the absorption pad and the wearing article are similarly fixed, It is a force that appears only when an external force along the surface direction of the hook material acts. The peeling force and shearing force of the hook material can be measured by the following methods, respectively. As is apparent from the measurement method below, in the present invention, the peel force is “90 degree peel force”, and the shear force is “180 degree peel force”.

<Measurement method of peel strength of hook material>
A rectangular shape in plan view having a longitudinal length of 100 mm and a lateral length of 50 mm including the hook material to be measured is cut out from the absorbent pad to obtain a test piece having a lateral length of the hook material of 50 mm. The length of the hook material in the vertical direction is not particularly cut and is the length of the hook material itself. Moreover, the surface sheet of the paper diaper which is the same shape as a test piece, and is 100 mm in vertical direction length and 60 mm in horizontal direction is prepared as an adherend piece. Specifically, as an adherend, a hydrophilic spunbond nonwoven fabric (trade name Eltas Aqua) manufactured by Asahi Kasei Fibers Co., Ltd., having a basis weight of 20 g / m ² and a longitudinal length of 100 mm and a lateral length of 60 mm are prepared. . The test piece and the adherend are overlapped so that the hook material of the test piece comes into contact with the adherent piece to obtain a laminate, and the laminate is flattened so that the adherent piece is on the top. The sample is placed on the substrate, and a 2 kg roller is reciprocated twice on the laminate, and the adherend piece and the test piece below it are pressure-bonded via a hook material to obtain a measurement sample. This measurement sample is mounted between chucks of a tensile tester (Tensilon tensile tester RTM100 manufactured by Orientec Co., Ltd.). The distance between chucks of the tensile tester is set to 40 mm. And while supporting this so that the shape of the measurement sample becomes T-shaped, the measurement sample is pulled in the longitudinal direction, that is, in the longitudinal direction of the absorption pad at a tensile speed of 300 mm / min. Peel to mold (peel 90 degrees) and record the maximum value of tensile load at that time. The measurement is performed three times, and the average value thereof is defined as the peel force (unit: cN / 50 mm) of the hook material. In addition, when the horizontal length of the hook material in the test piece (the length in the direction perpendicular to the tensile direction) is not 50 mm, the measurement is performed with the maximum horizontal length close to 50 mm, and the horizontal length of 50 mm. By converting the length, the peel strength of the hook material is obtained.

<Method for measuring shearing force of hook material>
The hook material is the same as the above <Method for measuring the peeling force of the hook material> except that the measurement sample is peeled 180 degrees without being peeled into the T-shape in the above <Method for measuring the peeling force of the hook material>. Obtain the shear force of 180 degree peeling of the measurement sample is performed by holding the test piece at one end in the longitudinal direction of the measurement sample and the adherend piece at the other end between the chucks of the tensile tester and pulling them in the opposite direction by 180 degrees. At this time, the distance between chucks of the tensile tester is set to 100 mm.

  As described above, the engagement force of the hook material can be expressed by two different characteristics, namely “peeling force” (90-degree peeling force) and “shearing force” (180-degree peeling force). In particular, paying attention to the peel force of these two characteristics, the peel force differs between the first hook material 6A and the second hook material 6B. The size relationship of “hook material 6A> second hook material 6B” is established. With such a configuration, the positioning of the absorbent pad 1 is facilitated, so that a comfortable wearing feeling can be obtained. In other words, the second hook member 6B having a relatively weak peel force has a weaker engaging force with respect to the wearing article than the first hook member 6A having a relatively strong peel force. After being engaged with the wearing article, the operation of peeling off the wearing article can be easily performed, and even if such an operation is repeated, it is difficult to feel complexity. Therefore, the positioning when fixing the absorbent pad 1 to the wearing article is performed by, for example, engaging the first hook material 6A with the wearing article to place the absorbent pad 1 in a semi-fixed state with respect to the wearing article. While the semi-fixed state is maintained, the absorbent pad 1 can be moved as appropriate, the second hook member 6B can be engaged with the wearing article at an appropriate position, and the absorbent pad 1 can be temporarily fixed.

The peeling force of the second hook member 6B is preferably 3% or more, more preferably 5% or more, and preferably 70% or less, more preferably 50% with respect to the peeling force of the first hook member 6A. In the following, it is particularly preferably 40% or less, more specifically preferably 3% or more and 70% or less, more preferably 5% or more and 50% or less, and still more preferably 5% or more and 40% or less.
The peel force of the first hook member 6A is preferably 50 cN / 50 mm or more, more preferably 60 cN / 50 mm or more, and preferably 150 cN / 50 mm or less, more preferably 120 cN / 50 mm or less, and more specifically preferably. Is from 50 cN / 50 mm to 150 cN / 50 mm, more preferably from 60 cN / 50 mm to 120 cN / 50 mm.
The peeling force of the second hook member 6B is preferably 1.5 cN / 50 mm or more, more preferably 2.5 cN / 50 mm or more, and preferably 90 cN / 50 mm or less, more preferably 75 cN / 50 mm or less, and even more preferably. 60 cN / 50 mm or less, more specifically, preferably 1.5 cN / 50 mm to 90 cN / 50 mm, more preferably 2.5 cN / 50 mm to 75 cN / 50 mm, and even more preferably 2.5 cN / 50 mm to 60 cN / 50 mm. It is as follows.

  The peeling force of the hook members 6A and 6B can be adjusted by various methods. In general, the peeling force of the hook material is determined by the shape of the hook, the size of the tip of the hook, that is, the size of the overhang, the height from the support of the hook, the installation density of the hook, etc. With respect to the peeling force, the magnitude relationship of the first hook material 6A> the second hook material 6B is obtained. In general, in the mushroom type and the pin type, the former has a larger protruding portion from the base end portion of the overhanging portion, and therefore has a strong peeling force and is difficult to peel off from the loop material. As described above, in the present embodiment, the hook 61A of the first hook member 6A has a mushroom type (see FIGS. 3A and 3B) or an arrowhead type (FIGS. 3C and 3). d)), the hook 61B of the second hook member 6B is a pin type, and the difference in the shape of the hooks 61A, 61B gives the magnitude relationship of the first hook member 6A> the second hook member 6B. It is done. In general, the larger the overhang values Hx and Hy representing the degree of overhang of the hook, the higher the hook height, and the higher the hook installation density, the greater the peeling force of the hook material. Thus, the magnitude relationship of the first hook material 6A> the second hook material 6B can be obtained more reliably.

  The ratio of the overhang value Hy in the lateral direction Y of the hook 61B in the second hook material 6B to the overhang value Hy in the lateral direction Y of the hook 61A in the first hook material 6A, that is, (the overhang value Hy of the hook 61B) ) / (Overhang value Hy of the hook 61A) is preferably 0 or more, more preferably 0.03 or more, particularly preferably 0.05 or more, and preferably 0.7 or less, more preferably 0.6. Hereinafter, it is particularly preferably 0.5 or less from the viewpoint of easy retouching of the mounting position of the absorbent pad 1.

It is preferable that the dimension of each part in the mushroom type or arrowhead type hook 61A constituting the first hook material 6A is in the following range.
The overhang value Hy in the lateral direction Y of the overhang portion 61t, that is, (the lateral maximum width Wy of the overhang portion 61t) − (the stem width Sy which is the minimum lateral width of the base end portion 61s) is preferably 100 μm or more. More preferably, it is 120 μm or more, and preferably 360 μm or less, more preferably 330 μm or less, more specifically preferably 100 μm or more and 360 μm or less, and further preferably 120 μm or more and 330 μm or less.
The overhang value Hx in the vertical direction X of the overhang portion 61t, that is, (the maximum vertical width Wx of the overhang portion 61t) − (the stem width Sx that is the minimum vertical width of the base end portion 61s) is preferably 40 μm or more. More preferably, it is 60 μm or more, and preferably 220 μm or less, more preferably 200 μm or less, more specifically preferably 40 μm or more and 220 μm or less, and further preferably 60 μm or more and 200 μm or less.
The height Tz (see FIGS. 3A and 3C) of the hook 61A from the support 60 is preferably 200 μm or more, more preferably 250 μm or more, and preferably 500 μm or less, more preferably 450 μm or less. More specifically, it is preferably 200 μm or more and 500 μm or less, and more preferably 250 μm or more and 450 μm or less.
The installation density of the hooks 61A is preferably 1200 or more, more preferably 1400 or more, and preferably 2600 or less, more preferably 2400 or less, more specifically 1200 per square inch. The number is 2600 or less, more preferably 1400 or more and 2400 or less.

It is preferable that the dimension of each part in the pin type hook 61B which comprises the 2nd hook material 6B exists in the following range.
The overhang value Hy in the lateral direction Y of the overhanging portion 61t, that is, (the maximum lateral width Wy of the overhanging portion 61t) − (the stem width Sy which is the minimum lateral width of the base end portion 61s) is preferably 5 μm or more. More preferably, it is 10 μm or more, and preferably 120 μm or less, more preferably 100 μm or less, more specifically, preferably 5 μm or more and 120 μm or less, and further preferably 10 μm or more and 100 μm or less.
The overhang value Hx in the vertical direction X of the overhang portion 61t, that is, (the maximum vertical width Wx of the overhang portion 61t) − (the stem width Sx which is the minimum vertical width of the base end portion 61s) is preferably 0 μm or more. More preferably, it is 4 μm or more and preferably 100 μm or less, more preferably 80 μm or less, more specifically preferably 0 μm or more and 100 μm or less, and further preferably 4 μm or more and 80 μm or less.
The height Tz (see FIG. 4) of the hook 61B from the support 60 is preferably 120 μm or more, more preferably 180 μm or more, and preferably 450 μm or less, more preferably 360 μm or less, more specifically preferably It is 120 micrometers or more and 450 micrometers or less, More preferably, they are 180 micrometers or more and 360 micrometers or less.
The installation density of the hooks 61B is preferably 600 or more, more preferably 800 or more, and preferably 2000 or less, more preferably 1800 or less, more specifically preferably 600 per square inch. The number is 2,000 or less, more preferably 800 or more and 1800 or less.

  The peeling force of the hook materials 6A and 6B can be adjusted by their area. In order to obtain the magnitude relationship of the first hook material 6A> the second hook material 6B with respect to the peeling force, the second hook material The area of 6B may be smaller than the area of the first hook member 6A. The area of the second hook material 6B is preferably 30% or more, more preferably 40% or more, and preferably 80% or less, more preferably 70% or less, with respect to the area of the first hook material 6A. More specifically, it is preferably 30% or more and 80% or less, and more preferably 40% or more and 70% or less.

The length in the longitudinal direction X of each of the first hook material 6A and the second hook material 6B is preferably 8 mm or more, more preferably 10 mm or more, and preferably 35 mm or less, more preferably 30 mm or less, more specifically. Is preferably 8 mm or more and 35 mm or less, more preferably 10 mm or more and 30 mm or less.
The length in the lateral direction Y of each of the first hook material 6A and the second hook material 6B is preferably 30 mm or more, more preferably 40 mm or more, and preferably 150 mm or less, more preferably 120 mm or less, more specifically. Is preferably 30 mm or more and 150 mm or less, more preferably 40 mm or more and 120 mm or less.

  As described above, in the present embodiment, the first hook material 6A and the second hook material 6B have a magnitude relationship with respect to the peeling force, but with respect to the shearing force, both the hook materials 6A, There may be no magnitude relationship between 6B, and even if there is a magnitude relationship, even if it has a reverse relationship to the peeling force, that is, the second hook material 6B is replaced with the first hook material 6A. In comparison, the shearing force may be strong. The reason for this is that in the engagement force of the hook members 6A and 6B to the wearing article (loop material), the influence on the operability of the alignment of the absorbent pad 1 is the peeling force, and the influence of the shearing force is not large. Because.

The shearing force of the first hook member 6A is preferably 1200 cN / 50 mm or more, more preferably 1500 cN / 50 mm or more, and preferably 3000 cN / 50 mm or less, more preferably 2700 cN / 50 mm or less, more specifically preferably. Is 1200 cN / 50 mm or more and 3000 cN / 50 mm or less, more preferably 1500 cN / 50 mm or more and 2700 cN / 50 mm or less.
The shear force of the second hook member 6B may be in the same range as the shear force of the first hook member 6A, but is preferably 900 cN / 50 mm or more, more preferably 1200 cN / 50 mm or more, and preferably 3000 cN / 50 mm. Hereinafter, it is more preferably 2700 cN / 50 mm or less, more specifically, preferably 900 cN / 50 mm or more and 3000 cN / 50 mm or less, more preferably 1200 cN / 50 mm or more and 2700 cN / 50 mm or less.

  However, in terms of the engagement force of the hook material with respect to the wearing article, that is, the fixing force of the absorbent pad with respect to the wearing article, the shearing force of the hook material is important. It can lead to a decrease in fixing force. Thus, in the present embodiment, the fixing force of the absorbent pad 1 is maintained while maintaining the ease of alignment of the second hook member 6B that has been intentionally weakened in peelability from the viewpoint of easy alignment. The device has been devised so as not to cause a decline.

  Specifically, in the present embodiment, the first hook member 6A and the second hook member 6B are located inward in the longitudinal direction X, that is, between the pair of hook members 6A and 6B spaced apart in the longitudinal direction X. The elastic body is arranged in an elongated state in the longitudinal direction X. Usually, when the absorbent pad 1 is fixed to the wearing article, the hook members 6A and 6B are extended after the absorbent pad 1 is extended in the longitudinal direction X after performing the alignment operation in the above-described procedure or while performing this operation. When the absorbent pad 1 is fixed to the wearing article by using such a configuration, the contraction force of the elastic body works, and thereby the hook material 6A, 6B and the wearing article are used. Since the shearing force is expressed, the fixing force of the absorbent pad 1 to the wearing article is improved, and the inconvenience such as the absorbent pad 1 being displaced from the proper position during wearing, and being displaced from the wearing article when the absorbent pad 1 is replaced is further generated. It becomes difficult to do.

  The “elastic body” that generates a shearing force between the hook materials 6A and 6B and the wearing article is arranged in an extended state in the longitudinal direction X in comparison with the first hook material 6A and the second hook material 6B. The absorbent pad 1 may be disposed on the skin facing surface 1f side of the absorbent pad 1, that is, on the surface sheet 2 side, regardless of the position of the absorbent pad 1 in the thickness direction. Surface) may be disposed on the 1b side, that is, on the back sheet 3 side. Therefore, in this embodiment, the thread-like leakproof cuff forming elastic member 51 and the leg elastic member 53 (see FIGS. 1 and 2) constituting the leakproof cuff 5 can function as the “elastic body”.

  In the present embodiment, as the “elastic body” having a higher effect, as shown in FIGS. 1, 5, and 6, the width is wider than the elastic member 51 for forming a leak-proof cuff, that is, the length in the lateral direction Y. A long elastic sheet 7 is used. The elastic sheet 7 has a rectangular shape in plan view, and is arranged with its longitudinal direction coinciding with the lateral direction Y. As shown in FIG. 6, the elastic sheet 7 is disposed between the back sheet 3 and the absorber 4. The elastic sheet 7 is fixed to the skin facing surface (the surface facing the absorber 4) of the back sheet 3 by a known joining means such as an adhesive.

  As the elastic sheet 7, an elastic sheet or a material having a shape equivalent to the elastic sheet (a shape wider than a thread or string) can be used. For example, a belt-shaped elastic member (so-called flat rubber), an elastic sheet, or an inelastic sheet A composite sheet in which a thread-like or string-like elastic member is fixed in a stretched state on one side, an elastic resin film, an elastic nonwoven fabric, an elastic foam such as polyurethane foam, or two or more of these are laminated. The composite sheet etc. which are formed are mentioned. As the elastic sheet 7, an elastic sheet having “a configuration in which a thread-like elastic filament is bonded to one surface of an extensible fiber layer mainly composed of non-elastic fibers” can be used. It can be produced according to the method described in JP-A-61743.

The length in the longitudinal direction X of the elastic sheet 7 is preferably 30 mm or more, more preferably 40 mm or more, and preferably 120 mm or less, more preferably 100 mm or less, more specifically preferably 30 mm or more and 120 mm or less, Preferably they are 40 mm or more and 100 mm or less.
The length of the elastic sheet 7 in the lateral direction Y is preferably 30 mm or more, more preferably 40 mm or more, and preferably 150 mm or less, more preferably 120 mm or less, more specifically preferably 30 mm or more and 150 mm or less, Preferably they are 40 mm or more and 120 mm or less.

  From the viewpoint of further increasing the significance of adopting the elastic sheet 7, the elastic sheet 7 preferably overlaps at least one of the first hook material 6 </ b> A and the second hook material 6 </ b> B in the lateral direction Y. Is more preferably overlapped with the second hook member 6B in the lateral direction Y, and the elastic sheet 7 is particularly preferably overlapped with both the hook members 6A and 6B. In other words, when both side edges (both ends in the lateral direction Y) extending in the vertical direction X of the first hook material 6A and the second hook material 6B are virtually extended in the vertical direction X, In the region sandwiched between the pair of virtual extension lines extending from the hook member 6A, the region sandwiched between the pair of virtual extension lines extending from the second hook member 6B, or the region overlapping the both regions, the elastic sheet 7 Preferably at least a portion is present. The elastic sheet 7 does not have to partially overlap the hook members 6A and 6B in the lateral direction Y. However, as shown in FIGS. It is more effective to overlap the materials 6A and 6B in the lateral direction Y. In the present embodiment, the elastic sheet 7 is arranged in the center portion in the lateral direction Y of the absorbent pad 1, that is, in the center portion in the lateral direction Y of the region sandwiched between the pair of virtual extension lines extending from the hook members 6A and 6B. Has been.

  From the same viewpoint, the length of the elastic sheet 7 in the lateral direction Y is preferably 50% or more, more preferably, the length of the overlapping portion overlapping the hook material 6A or the hook material 6B in the lateral direction Y. Is 70% or more, preferably 120% or less, more preferably 100% or less, more specifically, preferably 50% or more and 120% or less, more preferably 70% or more and 100% or less. If the ratio is too low, it is not meaningful to arrange the elastic sheet 7. If the ratio is too high, the outer side in the width direction contracts more than necessary than the hook material 6B, and it is difficult to mount the absorbent pad 1. It may be difficult to align, and may be a factor that deteriorates the feeling of wearing at the time of wearing, particularly the feeling of wearing in the state of lying on the back.

  The above-mentioned “length of overlapping portions overlapping in the lateral direction Y of the hook material 6A or the hook material 6B” refers to both side edges extending in the longitudinal direction X of the first hook material 6A or the second hook material 6B. The region between the pair of virtual extension lines when virtually extending in the direction X and the pair when both side edges extending in the vertical direction X of the elastic sheet 7 are virtually extended in the vertical direction X It is the length of the horizontal direction Y of the overlapping part with the area | region pinched | interposed into the virtual extension line. In this embodiment, the hook material 6A and the hook material 6B have the same shape and the same size, the elastic sheet 7 is narrower in the width direction than the hook materials 6A and 6B, and the elastic sheet 7 is completely in the lateral direction Y. Since it is stored in the hook members 6A and 6B, “the length of the overlapping portion overlapping with the hook member 6A or the hook member 6B in the lateral direction Y” matches the lateral length of the elastic sheet 7.

  Further, from the viewpoint of further increasing the significance of adopting the elastic sheet 7, the elastic sheet 7 is placed in the vicinity of the second hook member 6B having a relatively weak peeling force, as shown in FIGS. Preferably it is located. From the same viewpoint, it is also preferable that the elastic sheet 7 overlaps the second hook member 6B in a plan view (not shown). Here, “the vicinity of the second hook material 6 </ b> B” specifically means a region within 20 mm from the second hook material 6 </ b> B in the surface direction of the absorbent pad 1.

  Further, in the present embodiment, from the viewpoint of further increasing the fixing force of the absorbent pad 1 to the worn article by the hook members 6A and 6B, the above-described elastic body, that is, the elastic member 51 for forming a leakproof cuff and the elastic sheet 7 are employed. In addition, the absorber 4 is also devised. Specifically, as shown in FIGS. 1, 5 and 6, the absorbent core 40 constituting the absorbent body 4 is provided with a horizontally long opening 45 penetrating the absorbent core 40 in the thickness direction, and In a plan view, the opening 45 and the elastic sheet 7 as the elastic body overlap each other. As described above, the elastic sheet 7 in the present embodiment is located in the vicinity of the second hook member 6B having a relatively weak peeling force, or overlaps the second hook member 6B in plan view. The opening 45 of the absorber 4 is located in the vicinity of the second hook member 6B or overlaps the second hook member 6B in plan view.

  In the present embodiment, the opening 45 of the absorber 4 has a rectangular shape in plan view, and the longitudinal direction thereof coincides with the lateral direction. The opening 45 in the present embodiment is formed only in the absorbent core 40 and is not formed in the core wrap sheet 41. As a method for forming the opening 45 in the absorbent core 40, for example, the material for forming the absorbent core 40 supplied by being put on an air flow is sucked and deposited on a molding die formed on the outer peripheral surface of the rotating drum. In the method of obtaining the absorbent core 40, the mold is manufactured by using a mold having a predetermined pattern as the mold, for example, a mold having a portion corresponding to the opening 45 protruding upward relative to the peripheral portion. Can do. In the absorbent core 40 obtained by such a method, a portion where the forming material does not exist is an opening 45 in the absorbent core 40. Further, as another method of forming the opening 45 in the absorbent core 40, an absorbent core having no opening is manufactured, and a predetermined portion of the absorbent core is subjected to die cutting or cutting. A method of forming a non-stacked portion by processing can also be adopted, and the method of forming the opening 45 by post-processing can also be used when forming the opening 45 in the core wrap sheet 41. That is, as another embodiment of the present invention, the opening 45 may be formed in all of the constituent members of the absorbent body 4, that is, both the absorbent core 40 and the core wrap sheet 41.

  By providing the opening 45 in the absorbent core 40 which is the absorbent body 4 or one of the constituent members in this manner, the absorbent body 4 is easily contracted in the longitudinal direction X, that is, the longitudinal direction of the absorbent body 4. , 6B is used to fix the absorbent pad 1 to the wearing article, a shearing force is generated between the hook members 6A, 6B and the wearing article, thereby improving the fixing force of the absorbent pad 1 to the wearing article. In particular, in the present embodiment, the opening 45 of the absorber 4 is positioned in the vicinity of the second hook member 6B having a relatively weak peeling force, or overlaps the second hook member 6B in plan view. Therefore, the effect of the opening 45 is particularly easy to work on the second hook material 6B. As a result, the fixing force of the absorbent pad 1 is maintained at a practically sufficient level without impairing the ease of alignment. obtain. In addition, as a result of improving the shearing force with respect to the hook members 6A and 6B, particularly the second hook member 6B by the above-described device, it is difficult to remove the hook members from the state in which they are engaged with the wearing article. However, it is easy to pull the hook material engaged with the wearing article in the direction opposite to the contraction direction of the elastic sheet 7 and the absorbent body 4, that is, outward in the longitudinal direction X. Can be peeled off.

  From the viewpoint of ensuring the above-described effects, the opening 45 has a lateral length as compared with the elastic sheet 7 as the elastic body, as shown in FIGS. Is preferably long. The lateral length of the opening 45 is preferably 80% or more, more preferably 90% or more, and preferably 130% or less, more preferably 120% or less, with respect to the lateral length of the elastic sheet 7. More specifically, it is preferably 80% or more and 130% or less, and more preferably 90% or more and 120% or less.

The length in the lateral direction Y of the opening 45 is preferably 30 mm or more, more preferably 50 mm or more, and preferably 180 mm or less, more preferably 160 mm or less, more specifically preferably 30 mm or more and 180 mm or less, Preferably they are 50 mm or more and 160 mm or less.
The length in the longitudinal direction X of the opening 45 is preferably 10 mm or more, more preferably 15 mm or more, and preferably 50 mm or less, more preferably 40 mm or less, more specifically, preferably 10 mm or more and 50 mm or less, Preferably they are 15 mm or more and 40 mm or less.

  The size of the absorbent pad 1 may be adjusted as appropriate according to the size of the wearing article to be used together, and is not particularly limited. Usually, the length in the longitudinal direction X is preferably 360 mm or more, more preferably 400 mm or more, and , Preferably 800 mm or less, more preferably 720 mm or less, more specifically preferably 360 mm or more and 800 mm or less, more preferably 400 mm or more and 720 mm or less, and the length in the lateral direction Y is preferably 100 mm or more, Preferably they are 120 mm or more, and preferably 300 mm or less, More preferably, it is 270 mm or less, More specifically, Preferably they are 100 mm or more and 300 mm or less, More preferably, they are 120 mm or more and 270 mm or less.

  Although the present invention has been described above, the present invention is not limited to the above-described embodiments and can be modified as appropriate. For example, in the above-described embodiment, the planar shape of the hook members 6A and 6B is a rectangular shape, but the planar shape of the hook members 6A and 6B is not particularly limited, and for example, a V shape as shown in FIG. Further, it may be arcuate as shown in FIG. In particular, the arc shape as shown in FIG. 8B is preferable because it is easy to apply to the worn article and is easy to peel off from the worn article. In the case of the V-shaped hook material shown in FIG. 8A, it is preferable that the top of the V-shape is arranged so as to face the center in the longitudinal direction X of the absorbent pad 1. Further, in the case of the arc-shaped hook material shown in FIG. 8B, it is preferable that the hook material is arranged so as to protrude toward the center in the longitudinal direction X. In the above embodiment, the hook material 6A and the hook material 6B have the same shape in plan view, but may be different from each other.

  Moreover, in the said embodiment, although the planar view shape of the opening part 45 of the absorber 4 was a rectangular shape, the planar view shape of the opening part 45 is not restrict | limited in particular, For example, trapezoid shape as shown to Fig.9 (a), It may be V-shaped as shown in FIG. 9B or an arc shape as shown in FIG. In the case of a trapezoidal opening having a trapezoidal shape shown in FIG. 9A, that is, a trapezoidal shape having an upper base and a lower bottom longer than that, the upper base is arranged so as to face the center in the longitudinal direction X of the absorbent pad 1. It is preferred that Moreover, in the case of a V-shaped opening as shown in FIG. 9B, it is preferable that the top of the V-shape is arranged so as to face the center in the longitudinal direction X of the absorbent pad 1. In addition, in the case of the arc-shaped opening shown in FIG. 9C, it is preferable that the opening is convex toward the center in the longitudinal direction X.

  In the above embodiment, the hook 61A in the first hook material 6A is a mushroom type or arrowhead type as shown in FIG. 3, and the hook 61B in the second hook material 6B is a pin type as shown in FIG. The shape of the hooks 61A and 61B is not particularly limited. In short, it is only necessary that the second hook member 6B has a lower peeling force than the first hook member 6A. Therefore, for example, both the hooks 61A and 61B may be a mushroom type as shown in FIG. In addition, the mushroom type or arrowhead type hook material that can be used in the present invention is not limited to that shown in FIG. 3, and a hook material having a shape similar to that shown in FIG. 3 can be used. The same applies to the pin type hook material.

Moreover, the liquid-permeable sheet | seat which consists of various nonwoven fabrics may be arrange | positioned between the surface sheet 2 and the absorber 4 from a viewpoint of improvement, such as an absorptivity and leak-proof property. From the same viewpoint, a groove formed by integrally compacting the topsheet 2 and the absorbent body 4 may be formed on the skin-facing surface of the absorbent pad 1. Furthermore, the back sheet 3 covers the side edges along the vertical direction X of the top sheet 2 in order to prevent lateral leakage of the urine fluid and to make the length or width in the lateral direction Y of the absorbent pad 1 compact. Moreover, it may be wound up and arranged on the surface sheet 2 side. Moreover, the leak-proof cuff 5 (sheet 50 for forming a leak-proof cuff) is a skin-facing surface of the back sheet 3 (extending portions from both side edges along the longitudinal direction X of the absorbent body 4) wound up on the top sheet 2 side. Alternatively, it may be joined to the non-skin facing surface, or one end side of the leak-proof cuff forming sheet 50 along the longitudinal direction X is joined to the wearing article contact surface 1b, and the other end side of the sheet 50 is the absorbent pad 1 It may be wound up and arranged on the skin facing side.
Further, from the viewpoint of ease of alignment, the backsheet 3 may be provided with a mark for alignment. For example, a mark is attached to the vicinity of each of the first hook material 6A and the second hook material 6B on the back surface sheet 3 of the absorbent pad 1, and the absorbent pad 1 is also applied to a disposable diaper used together with the absorbent pad 1. By attaching a mark indicating the fixed position, the alignment becomes easier. The mark for alignment includes marks indicating the front and back of the absorbent pad, and the mark only needs to be visually recognized, and a symbol, a character, or a combination thereof can be used.
Moreover, the absorption pad of this invention may be accommodated in the separate packaging pack in the state by which each absorption pad was folded in half. For example, it can be stored in a separate packaging pack in a state where it is folded in the longitudinal direction so that the skin facing surface at the front portion and the skin facing surface at the rear portion of the absorbent pad overlap.
The absorbent pad of the present invention can be worn together with various wearing articles. The wearing articles that can be used in combination include disposable diapers (including both a pants-type and a so-called unfolded type having a fastening tape) as shown in FIG. Various absorbent articles such as light incontinence shorts and light incontinence pants, as well as clothing shorts and underwear / underwear. The following additional notes are disclosed with respect to the embodiment of the present invention described above.

<1>
A liquid-retaining absorbent body, having a longitudinal direction corresponding to the wearer's front-rear direction and a transverse direction perpendicular thereto, removably fixed on the skin facing surface of a separate wearing article, An absorbent pad to be worn with the worn article,
A first hook that can be engaged with the wearing article as a fixing member that removably fixes the absorbent pad to the wearing article abutting surface that abuts against the skin facing surface of the wearing article when worn. Material and a second hook material are arranged, both hook materials are spaced apart on the one side and the other side in the vertical direction across the central part in the vertical direction of the wearing article contact surface,
The second hook material is an absorbent pad having a weaker peeling force than the first hook material.

<2>
Each of the first hook material and the second hook material includes a support and a plurality of hooks provided on the surface of the support, and the hook is a surface of the support. A base end portion standing up from the base end, and a projecting portion projecting in a predetermined direction from the tip end of the base end portion,
The first hook material and the second hook material are different in overhang value or shape of the hook,
The absorption according to <1>, wherein the overhang value is a difference between a maximum width in a predetermined direction of the overhang portion of the hook and a minimum width (stem width) of the base end portion in the same direction as the predetermined direction. pad.
<3>
The ratio of the overhang value Hy in the lateral direction of the hook in the second hook material to the overhang value Hy in the lateral direction of the hook in the first hook material is preferably 0 or more, more preferably 0. The absorbent pad according to <2>, which is 03 or more, particularly preferably 0.05 or more, and preferably 0.7 or less, more preferably 0.6 or less, and particularly preferably 0.5 or less.
<4>
The absorption pad according to <2> or <3>, wherein the hook in each of the first hook material and the second hook material is a mushroom type, an arrowhead type, or a pin type.

<5>
The hook in the first hook material is a mushroom type or an arrowhead type, and the overhang value Hy in the lateral direction of the overhanging portion in the hook is preferably 100 μm or more, more preferably 120 μm or more, and preferably 360 μm. Hereinafter, the absorbent pad according to <4>, more preferably 330 μm or less.
<6>
The hook in the first hook material is a mushroom type or an arrowhead type, and the overhang value Hx in the vertical direction of the overhang portion in the hook is preferably 40 μm or more, more preferably 60 μm or more, and preferably 220 μm. Hereinafter, the absorbent pad according to <4> or <5>, which is more preferably 200 μm or less.
<7>
The hook in the first hook material is a mushroom type or an arrowhead type, and the height of the hook from the support is preferably 200 μm or more, more preferably 250 μm or more, and preferably 500 μm or less, more preferably. Is an absorbent pad according to any one of <4> to <6>, which is 450 μm or less.
<8>
The hook in the first hook material is a mushroom type or an arrowhead type, and the installation density of the hook is preferably 1200 or more, more preferably 1400 or more, and preferably 2600 or less per square inch. The absorbent pad according to any one of <4> to <7>, more preferably 2400 or less.

<9>
The hook in the second hook material is a pin type, and the overhang value Hy in the lateral direction of the overhanging portion in the hook is preferably 5 μm or more, more preferably 10 μm or more, and preferably 120 μm or less. The absorbent pad according to any one of <4> to <8>, which is preferably 100 μm or less.
<10>
The hook in the second hook material is a pin type, and the overhang value Hx in the vertical direction of the overhanging portion in the hook is preferably 0 μm or more, more preferably 4 μm or more, and preferably 100 μm or less, The absorbent pad according to any one of <4> to <9>, which is preferably 80 μm or less.
<11>
The hook in the second hook material is a pin type, and the height of the hook from the support is preferably 120 μm or more, more preferably 180 μm or more, and preferably 450 μm or less, more preferably 360 μm or less. The absorbent pad according to any one of <4> to <10>, wherein
<12>
The hooks in the second hook material are pin-shaped, and the installation density of the hooks is preferably 600 or more, more preferably 800 or more, and preferably 2000 or less, more preferably 2000 per square inch. The absorbent pad according to any one of <4> to <11>, wherein is 1800 or less.

<13>
The peeling force of the second hook material is preferably 3% or more, more preferably 5% or more, and preferably 70% or less, more preferably 50% with respect to the peeling force of the first hook material. The absorbent pad according to any one of <1> to <12>, which is particularly preferably 40% or less.
<14>
The peeling force of the first hook member is preferably 50 cN / 50 mm or more, more preferably 60 cN / 50 mm or more, and preferably 150 cN / 50 mm or less, more preferably 120 cN / 50 mm or less. The absorbent pad according to any one of 13>.
<15>
The peeling force of the second hook material is preferably 1.5 cN / 50 mm or more, more preferably 2.5 cN / 50 mm or more, and preferably 90 cN / 50 mm or less, more preferably 75 cN / 50 mm or less, and even more preferably. The absorbent pad according to any one of <1> to <14>, which is 60 cN / 50 mm or less.
<16>
The absorbent pad according to any one of <1> to <15>, wherein the second hook material has a smaller area than the first hook material.
<17>
The area of the second hook material is preferably 30% or more, more preferably 40% or more, and preferably 80% or less, more preferably 70% or less with respect to the area of the first hook material 6A. The absorbent pad according to <16>, wherein

<18>
The elastic body according to any one of <1> to <17>, in which an elastic body is arranged in a longitudinally extending state inward in the longitudinal direction than the first hook material and the second hook material. Absorption pad.
<19>
The elastic body overlaps with at least one of the first hook material and the second hook material in the lateral direction, and the lateral length of the elastic body is the first hook material or the second hook material. Preferably, it is 50% or more, more preferably 70% or more, and preferably 120% or less, more preferably 100% or less with respect to the length of the overlapping portion in the lateral direction of the hook material. Absorption pad.
<20>
The absorbent pad according to <18> or <19>, wherein the length of the elastic body in the longitudinal direction is preferably 30 mm or more, more preferably 40 mm or more, and preferably 120 mm or less, more preferably 100 mm or less.
<21>
The length in the lateral direction of the elastic body is preferably 30 mm or more, more preferably 40 mm or more, and preferably 150 mm or less, more preferably 120 mm or less, according to any one of the above items <18> to <20>. The absorbent pad as described.
<22>
The absorbent pad according to any one of <18> to <21>, wherein the entirety of the elastic body overlaps both the first hook material and the second hook material in the lateral direction.

<23>
<18, wherein a back sheet forming the wearing article contact surface is disposed on the non-skin facing surface side of the absorbent body, and the elastic body is interposed between the back sheet and the absorbent body. The absorbent pad according to any one of> to <22>.
<24>
The absorption according to any one of <18> to <23>, wherein the elastic body is located in the vicinity of the second hook member or overlaps the second hook member in a plan view. pad.
<25>
The absorbent body has an absorbent core, and the absorbent core has an oblong opening that penetrates the absorbent core in the thickness direction, and the opening and the elastic body overlap in plan view. The absorbent pad according to any one of <18> to <24>.
<26>
The absorbent pad according to <25>, wherein the opening has a lateral length longer than that of the elastic body.

<27>
The absorbent pad according to any one of <1> to <26>, wherein each of the first hook material and the second hook material overlaps the absorber in a plan view.
<28>
The separation distance between the first hook material and the second hook material is preferably 50% or more, more preferably 60% or more, and preferably 85% with respect to the total length in the longitudinal direction of the absorbent pad. The absorbent pad according to any one of <1> to <27>, further preferably 80% or less.
<29>
The distance between the first hook material and the second hook material is preferably 200 mm or more, more preferably 240 mm or more, and preferably 540 mm or less, more preferably 500 mm or less. The absorbent pad according to any one of 28>.
<30>
The shearing force of the first hook material is preferably 1200 cN / 50 mm or more, more preferably 1500 cN / 50 mm or more, and preferably 3000 cN / 50 mm or less, more preferably 2700 cN / 50 mm or less <1> to <1. The absorbent pad according to any one of 29>.
<31>
The shearing force of the second hook material is preferably 900 cN / 50 mm or more, more preferably 1200 cN / 50 mm or more, and preferably 3000 cN / 50 mm or less, more preferably 2700 cN / 50 mm or less <1> to <30> The absorbent pad as described in any one of 30>.

<32>
On the non-skin facing surface side of the absorbent body, a back sheet that forms the wearing article contact surface is disposed, and the back sheet extends from both side edges along the longitudinal direction of the absorbent body, and both the extending portions Is wound on the skin facing surface side of the absorbent body, and the sheet for leakproof cuff formation is joined to the skin facing surface or the non-skin facing surface of both the rolled-up portions. The absorbent pad according to any one of to <31>.
<33>
On the non-skin facing surface side of the absorbent body, a back sheet that forms the wearing article contact surface is disposed, and the back sheet extends from both side edges along the longitudinal direction of the absorbent body, and both the extending portions Is wound up on the skin facing surface side of the absorber,
A pair of leak-proof cuffs including a leak-proof cuff forming sheet are arranged on both left and right sides along the vertical direction on the skin facing surface side of the absorbent pad, and the leak-proof cuff forming sheet is The absorbent pad according to any one of <1> to <31>, wherein one end side along the longitudinal direction is joined to the wearing article contact surface, and the other end side is wound up to the skin facing surface side of the absorbent pad. .
<34>
The absorbent pad is arranged on the crotch part of the wearer when worn, a front part arranged on the abdomen side of the wearer than the crotch part, and on the back side of the wearer than the crotch part. In the vertical direction, and folded in a vertical direction so that the skin-facing surface of the front portion and the skin-facing surface of the rear portion overlap each other. The absorbent pad according to <32> or <33>.
<35>
A back sheet forming the wearing article contact surface is disposed on the non-skin facing surface side of the absorbent body, and can be used for positioning when fixing the absorbent pad to a separate wearing article on the back sheet The absorbent pad as described in any one of said <1>-<34> to which a simple mark is attached | subjected visually so that visual recognition is possible.

DESCRIPTION OF SYMBOLS 1 Absorbent pad 1f Absorbent pad skin facing surface 1b Absorbent pad wearing article contact surface (non-skin facing surface)
2 Top sheet 3 Back sheet 4 Absorber 40 Absorbent core 41 Core wrap sheet 45 Opening 5 Leak-proof cuff 50 Leak-proof cuff forming sheet 51 Leak-proof cuff-forming elastic member (elastic body)
6A First hook material 6B Second hook material 60 Support body 61A, 61B Hook 61s Hook base end 61t Hook overhang 7 Elastic sheet (elastic body)
100 disposable diapers (wearing articles)
1F Front part 1M Inseam 1R Rear part X Longitudinal direction Y Lateral direction

Claims (8)

A liquid-retaining absorbent body, having a longitudinal direction corresponding to the wearer's front-rear direction and a transverse direction perpendicular thereto, removably fixed on the skin facing surface of a separate wearing article, An absorbent pad to be worn with the worn article,
A first hook that can be engaged with the wearing article as a fixing member that removably fixes the absorbent pad to the wearing article abutting surface that abuts against the skin facing surface of the wearing article when worn. Material and a second hook material are arranged, both hook materials are spaced apart on the one side and the other side in the vertical direction across the central part in the vertical direction of the wearing article contact surface,
The second hook material is an absorbent pad having a weaker peeling force than the first hook material.   2. The absorbent pad according to claim 1, wherein the second hook material has a peeling force of 70% or less as compared with the first hook material.   The absorbent pad according to claim 1 or 2, wherein an elastic body is arranged in an elongated state in the longitudinal direction inside the first hook material and the second hook material.   The elastic body overlaps with at least one of the first hook material and the second hook material in the lateral direction, and the lateral length of the elastic body is the first hook material or the second hook material. The absorbent pad according to claim 3, which is in the range of 50% or more and 120% or less of the length of the overlapping portion in the lateral direction of the hook material.   The back sheet which forms the said wear article contact surface is distribute | arranged to the non-skin opposing surface side of the said absorber, The said elastic body is interposed and arrange | positioned between this back sheet and this absorber. Or the absorption pad of 4.   The absorbent pad according to any one of claims 3 to 5, wherein the elastic body is located in the vicinity of the second hook member or overlaps the second hook member in a plan view.   The absorbent body has an absorbent core, and the absorbent core has an oblong opening that penetrates the absorbent core in the thickness direction, and the opening and the elastic body overlap in plan view. The absorbent pad according to any one of claims 3 to 6.   The absorbent pad according to claim 7, wherein the opening has a longer lateral length than the elastic body.

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