JP5182934B2 - Fastening member, disposable diaper and method for manufacturing fastening member - Google Patents

Description

  The present invention relates to a fastening member that is part of an absorbent article that receives excrement from a wearer and a method for manufacturing the fastening member, and to an open-type disposable diaper including the fastening member.

  Conventionally, as a disposable diaper that receives excrement from a wearer, a part that contacts the skin on the abdomen side of the wearer and a part that contacts the skin on the back side are fastened by a fastening member around the waist. Open-type disposable diapers are used. For example, in the disposable diaper of patent document 1, a pair of fastening tapes having a male engagement piece (for example, an engagement piece in which a hook-type engagement element is implanted) of the hook and loop fastener are provided on both sides of the back side portion of the disposable diaper. The disposable diaper is attached to the wearer by engaging these male side engaging pieces with female side engaging pieces (for example, loop type engaging pieces) provided on the abdominal side of the disposable diaper. Is done.

In the fastening tape of Patent Document 1, a male side engaging piece of a hook-and-loop fastener is provided on a folded piece formed at one end of a nonwoven fabric base material sheet, and the other side of the base material sheet is connected to the main body of the disposable diaper. It is a mounting part. Then, the male engagement piece of the folded piece is temporarily engaged with the region overlapping with the folded piece of the base sheet. In the manufacture of the disposable diaper of Patent Document 1, the fastening tape is handled in a state in which the folded piece of the fastening tape is folded and the male engagement piece is temporarily engaged, thereby engaging the male engagement piece. The surface is prevented from being caught on the manufacturing machine, and smooth production of the disposable diaper is realized.
JP 2002-45214 A

  By the way, when the disposable diaper of Patent Document 1 is attached, after the male engagement piece of the fastening piece of the fastening tape is peeled off from the temporary engagement portion of the base material, the female engagement piece on the abdominal side portion is removed. At this time, there is a risk that a portion around the male engagement piece of the fastening tape (for example, an end of the folded piece) is bent and engaged with the male engagement piece. is there. Thus, when a part of engagement surface of a male side engagement piece is covered and an engagement area reduces, when a disposable diaper is mounted | worn, there exists a possibility that the engagement force by a fastening tape may run short. .

  This invention is made | formed in view of the said subject, When using a fastening member, it prevents that a hook member will be covered by another site | part, and ensures fastening by a fastening member. The purpose is that.

The invention according to claim 1 is a fastening member that is a part of an absorbent article that receives excrement from a wearer, and is formed of a non-woven fabric, and a folded part in which a part is folded on another part; A sheet portion attached to the main body portion of the absorbent article in at least a part other than the folded portion, a fine hook structure is formed on one surface, and the other surface is on the inner surface of the folded portion A hook member joined to the hook portion, and one main surface of the sheet portion including the inner surface of the folded portion faces the hook member in a state where the folded portion is folded and the fine hook structure possess and the temporary engaging region having a Karikakarigo possible fine loop structure, wherein the temporary engagement region and said hook member nonengageable region that is the hook member and the engaging impossible around the said Of the main surface of the seat portion, the entire region excluding the temporary engagement region and the hook member is the non-engagement region, and the temporary engagement region is not engageable with the hook member. It is the raising area | region formed by performing a raising process with respect to the said main surface .

According to a second aspect of the invention, a fastening member according to claim 1 or 2, the basis weight of the sheet portion is 50 g / ^{m 2} or more 100 g / ^{m 2} or less.

The invention according to claim 3 is an open-type disposable diaper in which a front part in contact with the wearer's abdomen skin and a rear part in contact with the skin on the back side are fastened and worn around the waist. A substantially seat having a front part in contact with the skin on the stomach side of the wearer, a rear part in contact with the skin on the back side of the wearer, and an intermediate part facing the crotch of the wearer between the front part and the rear part The fastening member according to claim 1 or 2 , wherein at one end of the front part and the rear part of the main body part, the fastening member according to claim 1 or 2 joined to both sides in the width direction of the main body part. The hook member of the fastening member is temporarily engaged with the temporary engagement region at the time of manufacturing and transporting, and is attached to the wearer when the hook member is attached to the temporary engagement region. Temporary engagement is released, and the front portion and the main body portion In other of said rear portion, said hook member of the fastening member on the opposite side is engaged with the wearer's side.

The invention according to claim 4 is the disposable diaper according to claim 3 , wherein another main surface of the seat portion of the fastening member is engageable with the hook member.

The invention according to claim 5 is the disposable diaper according to claim 4 , wherein the other main surface of the sheet portion is embossed to be engageable with the hook member. .

Invention of Claim 6 is a manufacturing method of the fastening member which is a part of the absorptive article which receives excrement from a wearer, Comprising: a 1st sheet | seat member formed with the nonwoven fabric predetermined conveyance Two temporary engagement regions that extend in the transport direction on both sides of the central portion in the width direction perpendicular to the transport direction on the main surface of the first sheet member and each have a fine loop structure while being transported in the direction And b) transporting the second sheet member having a fine hook structure that can be temporarily engaged with the fine loop structure on one surface in the conveying direction, and the main sheet of the first sheet member. the nonengageable region wherein a fine hook structure and engaging impossible with on the plane in between the two temporary engagement region extending in the conveying direction, the engaging non width than region is small the second sheet Join the other side of the member C) meandering at an amplitude larger than the width of the second sheet member in the non-engageable region, and traversing the second sheet member along the cutting line extending in the transport direction. Cutting the member and the second sheet member to form a plurality of folded portions protruding from one of the two temporary engagement regions toward the other; d) each folded portion in the transport direction And folding the fine hook structure of each folded portion into the temporary engagement region.

Invention of Claim 7 is a manufacturing method of the fastening member which is a part of the absorbent article which receives the excrement from a wearer, Comprising: a 1st sheet | seat member formed with the nonwoven fabric is conveyed predetermined Two temporary engagement regions that extend in the transport direction on both sides of the central portion in the width direction perpendicular to the transport direction on the main surface of the first sheet member and each have a fine loop structure while being transported in the direction And b) cutting a second sheet member to form a plurality of hook member pieces each having a fine hook structure that can be temporarily engaged with the fine loop structure by cutting the second sheet member, The surface of each hook member piece opposite to the fine hook structure extends in the transport direction between the two temporary engagement regions on the main surface of the first sheet member, and the fine hook structure. engagement not with the Bonding the plurality of hook member pieces, each having a width smaller than the width of the non-engageable region, while providing a gap in the non-engageable region, c) In the non-engageable region, the first sheet member is cut along a cutting line that snakes with an amplitude larger than the width of the second sheet member and extends in the transport direction while passing through the gaps of the plurality of hook member pieces. A step of forming a plurality of folded portions projecting from one of the two temporary engagement regions toward the other; and d) folding each folded portion back to a fold parallel to the transport direction. And a step of temporarily engaging the fine hook structure of the hook member piece of each folded portion with the temporary engagement region so as to face the engagement region.

The invention of claim 8 is a method for producing a fastening member according to claim 6 or 7, wherein a) in the process, the said fine hook structure and engaging non a is the first sheet member The two temporary engagement regions are formed by abutting against the main surface a raised roll that rotates about an axis that faces the width direction.

Invention of Claim 9 is a manufacturing method of the fastening member of Claim 8 , Comprising: The moving direction of the outer peripheral surface of the said raising roll in the contact part of the said raising roll and said 1st sheet | seat member, The transport direction coincides, and the moving speed of the outer peripheral surface is larger than the moving speed of the first sheet member.

A tenth aspect of the present invention is the method of manufacturing a fastening member according to the sixth or seventh aspect , wherein in the step a), the first sheet member is passed between two gears that mesh and rotate. by each of the said two temporary engagement region is wrinkle area on the major surface of the fine hook structure and engaging non a is the first sheet member is formed.

The invention of claim 11 is a method for producing a fastening member according to claim 6 or 7, in the a) step, said third sheet member having the fine loop structure on one major surface while conveying in the conveying direction, wherein the other main surface of the third sheet member by joining the main surface of the fine hook structure and engaging non a is the first sheet member, said two Karikakarigo A region is formed.

According to the first or second aspect of the present invention, when the fastening member is used, the hook member can be prevented from being covered with other parts, and fastening by the fastening member can be ensured .

In invention of Claim 3 thru | or 5 , while being able to make manufacture of a disposable diaper easy, a disposable diaper can be mounted | worn reliably. Moreover, in invention of Claim 4 and 5 , a fastening member can be engaged with another fastening member.

According to the sixth to eleventh aspects of the present invention, it is possible to easily manufacture the fastening member in a state where the hook member is not exposed.

  FIG. 1 is a perspective view showing an appearance of an absorbent article 1 according to the first embodiment of the present invention. The absorbent article 1 that receives excrement from the wearer is an open-type disposable diaper in which a part that abuts on the abdomen side of the wearer and a part that abuts on the back side are fastened around the waist.

  2 is a plan view showing a state in which the absorbent article 1 is expanded, and FIG. 3 is a longitudinal view of the absorbent article 1 at the position AA shown in FIG. 2 (that is, the vertical direction in FIG. 2). It is sectional drawing cut | disconnected by the surface perpendicular | vertical to. In FIG. 2, the absorbent article 1 is drawn with the surface on the side in contact with the wearer when the absorbent article 1 is mounted (that is, the wearer side) facing forward. As shown in FIGS. 2 and 3, the absorbent article 1 includes a substantially sheet-like main body 2.

  The upper part 201 and the lower part 203 in FIG. 2 of the main body 2 are parts that contact the wearer's abdomen and dorsal skin, respectively. In the following description, “front part 201” and “rear part” Part 203 ". Further, a portion 202 that is continuous between the front portion 201 and the rear portion 203 between the front portion 201 and the rear portion 203 and faces the crotch portion of the wearer is referred to as an “intermediate portion 202”. In the absorbent article 1, the width of the front part 201 and the rear part 203 of the main body part 2 is made larger than the width of the intermediate part 202. In addition, the absorbent article 1 is bonded to both ends in the width direction perpendicular to the longitudinal direction of the main body 2 at the end of the rear portion 203 of the main body 2 (that is, one end in the longitudinal direction). The fastening member 4 is provided.

  As shown in FIGS. 2 and 3, the main body 2 has an absorbent core 22 that is a substantially sheet-shaped absorbent body whose outline is indicated by a thick broken line in FIG. The top sheet 21 that covers, the back sheet 23 that covers the other main surface of the absorbent core 22 (that is, the main surface opposite to the wearer side), and the top sheet over almost the entire length of the top sheet 21 in the longitudinal direction. 21 is provided with a pair of side sheets 31 arranged on both sides in the width direction.

  The absorbent core 22 shown in FIG. 3 is adhered to the back sheet 23 via a hot melt adhesive applied to the wearer side surface of the back sheet 23, and the top sheet 21 is hot around the absorbent core 22. It is bonded to the back sheet 23 via a melt adhesive. Further, the side sheet 31 is bonded to a part exposed from the top sheet 21 of the back sheet 23 and a part in the vicinity of the edge in the width direction of the top sheet 21 via a hot melt adhesive. As these hot melt adhesives, polyolefin-based, rubber-based, vinyl acetate-based and the like are used.

  At both ends in the longitudinal direction of the main body 2 shown in FIG. 2, the inner portion in the width direction of each side sheet 31 (that is, the portion on the central axis side in the width direction of the main body 2) is interposed via a hot melt adhesive. The top sheet 21 is joined to the wearer side surface. The side sheet 31 and the top sheet 21 may be joined by heat sealing, ultrasonic joining, or the like.

  In each side sheet 31 shown in FIGS. 2 and 3, a portion 313 between both ends in the longitudinal direction is not joined to the top sheet 21 (and other configurations), and the portion 313 (hereinafter, “ An elastic member 32a extending in the longitudinal direction is joined to the inner edge in the width direction of the non-joined portion 313 ”. The elastic member 32a is in a stretched state when the absorbent article 1 is expanded, and the elastic member 32a contracts so that the non-joined portion 313 of the side sheet 31 is worn by the wearer as shown in FIG. It becomes a side wall part (so-called three-dimensional gather) that rises toward the side and contacts the vicinity of the base of the wearer's leg.

  As shown in FIGS. 2 and 3, two elastic members 32b extending in the longitudinal direction are sandwiched between the side seat 31 and the back seat 23 in the vicinity of the outer edge of each side seat 31 in the intermediate portion 202. Are joined. The elastic member 32b is in an expanded state when the absorbent article 1 is expanded, and the elastic member 32b contracts, so that the side sheet 31 and the back sheet 23 rise toward the wearer side and the inner side. A gather is formed and adheres closely to the base of the wearer's foot when the absorbent article 1 is worn.

  As shown in FIG. 2, three elastic members 25 sandwiched between the top sheet 21 and the back sheet 23 are provided at both ends in the longitudinal direction of the main body 2, and the top sheet 21 is stretched. When the elastic member 25 joined to the back sheet 23 contracts, a waist gather is formed and adheres to the waist of the wearer when the absorbent article 1 is worn. In the absorbent article 1, the elastic member 32a, 32b and the elastic member 25 cause the main body 2 to be in close contact with the wearer, thereby preventing leakage of urine and the like from around the legs, between the crotch, the abdomen and the back. .

  The top sheet 21 is a non-woven fabric formed of a liquid-permeable material, for example, a hydrophilic fiber, and quickly captures moisture of excrement from the wearer and moves it to the absorbent core 22. Nonwoven fabrics used as the top sheet 21 are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, and spunbond nonwoven fabrics, and cellulose, rayon, cotton, and the like are usually used as hydrophilic fibers that form these nonwoven fabrics. As the top sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surface is hydrophilically treated with a surfactant may be used. Alternatively, a plastic film having an aperture may be used.

  The absorbent core 22 is made of a mixture of a hydrophilic fiber (for example, pulverized pulp fiber or cellulose fiber) mixed with a granular water-absorbing polymer (for example, SAP (Super Absorbent Polymer)) such as a tissue paper or a liquid-permeable nonwoven fabric. It is formed by wrapping with a sheet and absorbs moisture that has passed through the top sheet 21 to quickly fix it. The cover sheet that wraps the hydrophilic fiber is bonded to the hydrophilic fiber and the water-absorbing polymer with a hot-melt adhesive to prevent the hydrophilic fiber from losing its shape and the water-absorbing polymer from falling off (especially after water absorption). To do.

  The back sheet 23 is a laminated sheet in which a non-woven fabric is laminated on the outer side of a water-repellent or liquid-impervious plastic film (that is, the side opposite to the absorbent core 22). The moisture once absorbed by the core 22 is prevented from oozing out of the back sheet 23. From the viewpoint of the wearer's comfort, it is preferable to use a plastic film having air permeability. Nonwoven fabrics used for the backsheet 23 are, for example, spunbond nonwoven fabrics, meltblown nonwoven fabrics, and SMS (spunbond / meltblown / spunbond) nonwoven fabrics, and may be subjected to water repellent treatment as necessary. As the back sheet 23, a water-repellent or liquid-impervious nonwoven fabric or plastic film may be used alone.

  The side sheet 31 is formed of a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a melt blown nonwoven fabric, an SMS nonwoven fabric), a plastic film, or a composite material thereof. From the viewpoint of improving the comfort of the absorbent article 1, the side sheet 31 forming the side wall portion preferably has air permeability.

  As the elastic members 25, 32a, 32b, for example, polyurethane yarn, strip-like polyurethane film, yarn-like or strip-like natural rubber or the like is used, and joined to the back sheet 23 or the like by hot melt adhesive, ultrasonic joining, heat sealing or the like. Has been. Preferably, polyurethane yarn having a fineness of 100 to 2500 dtex is used as the elastic members 25, 32a, and 32b, and is stretched 1.1 to 5.0 times on the back sheet 23 or the like with a rubber-based hot melt adhesive. Be joined.

  FIG. A is a cross-sectional view in which a portion of the absorbent article 1 near the fastening member 4 is cut and enlarged at a position BB shown in FIG. 2 along a plane perpendicular to the longitudinal direction. FIG. In A, for facilitating the understanding of the drawing, the fastening member 4 and the side sheet 31 and the back sheet 23 of the main body 2 are drawn apart from each other, and each of the fastening member 4 and the main body 2 is illustrated. The structure is shown without a parallel oblique line (the same applies to FIGS. 4.B, 10.A, and 10.B described later). FIG. As shown to A, the fastening member 4 which is a part of the absorbent article 1 is formed of a nonwoven fabric and is joined to the sheet part 41 attached to the main body part 2 of the absorbent article 1 and the sheet part 41. The hook member 42 is provided.

The sheet portion 41 is a nonwoven fabric formed of synthetic fibers such as polypropylene, polyethylene, polyester, and polyamide, or natural fibers such as pulp and silk, and preferably mainly includes polypropylene fibers and polyester fibers. In the present embodiment, the sheet part 41 is mainly formed of polypropylene fibers. The sheet portion 41 is preferably formed by any one of a spun bond method, an air through method, a point bond method, a melt blow method, and an airlaid method, or a combination of a plurality of manufacturing methods. More preferably, the sheet | seat part 41 is formed by the spun bond method or SMS method, and is set as the spun bond nonwoven fabric in this Embodiment. The basis weight of the sheet portion 41 is preferably 50 g / m ² or more and 100 g / m ² or less (more preferably 50 g / m ² or more and 85 g / m ² or less).

  In the sheet part 41, a part is a folded part 411 that is folded back on another part, and is an inner surface of the folded part 411 (that is, a surface that faces a part other than the folded part 411 of the sheet part 41. Yes, the hook member 42 is joined on the lower surface of the folded portion 411 in FIG. As shown in FIG. 2, in each fastening member 4, two folded portions 411 are provided on the sheet portion 41.

  FIG. A hook member 42 shown in A has a fine hook structure having a large number of fine hook elements such as a bowl shape, a bowl shape, and a mushroom shape formed on one surface (that is, the lower surface in FIG. 4.A). The other surface (that is, the upper surface in FIG. 4.A, the surface opposite to the side on which the fine hook structure is formed) is joined to the sheet portion 41.

  The seat portion 41 has a portion on the opposite side to the folded portion 411 (that is, a portion 412 in the vicinity of the left end portion in FIG. 4.A, hereinafter referred to as “attachment portion 412”) of the main body portion 2. It is sandwiched between the side sheet 31 and the back sheet 23, and is joined to the side sheet 31 and the back sheet 23 through the hot melt adhesive at the attachment portion 412. In addition, joining of the fastening member 4, the side sheet 31, and the back sheet 23 may be performed by heat sealing, ultrasonic joining, or the like.

  FIG. B is a cross-sectional view showing a portion in the vicinity of the fastening member 4 showing a state in which the folded portion 411 is extended, and FIG. It is a top view of the fastening member 4 in the state shown in B. In FIG. 5, in order to facilitate understanding of the drawing, the hook member 42 and the raised region 414 are shaded in parallel (the same applies to FIGS. 11 and 15). As shown in FIG. 5, each folded portion 411 is a projecting portion that projects from the substantially rectangular portion of the sheet portion 41 to one side in the width direction of the absorbent article 1 (that is, the left-right direction in FIG. 5). The length of the hook member 42 in the longitudinal direction of the absorbent article 1 (that is, the vertical direction in FIG. 5) is equal to the length of the folded portion 411 at the portion where the hook member 42 is provided. In other words, the hook member 42 is provided across the folded portion 411 in the longitudinal direction of the absorbent article 1.

  FIG. B and the main surface 413 on the side joined to the side sheet 31 of the sheet portion 41 shown in FIG. 5 (that is, the main surface including the inner surface of the folded portion 411, hereinafter referred to as “first main surface 413”). ) Has a raised region 414 subjected to raising treatment, and the raised region 414 is shown in FIG. As shown in A, the folded portion 411 faces the hook member 42 in a folded state. The raised region 414 is a temporary engagement region having a fine loop structure (that is, a structure having a number of fine loop elements) that can be temporarily engaged with the fine hook structure of the hook member 42. In the following description, The raised region 414 is referred to as “temporary engagement region 414”.

  The temporary engagement here refers to the hook member 42 (see FIG. 5) of the fastening member 4 and the frontal tape 24 provided on the front portion 201 of the main body 2 when the absorbent article 1 shown in FIG. This means engagement that is performed with a weaker engagement force than the above-described engagement. The frontal tape 24 is a non-woven fabric, woven fabric, knitted fabric or the like in which a fine loop structure having a large number of fine loop elements is formed on one surface, or a composite material in which these materials and a plastic film are laminated, The other surface (that is, the surface opposite to the side on which the fine loop structure is formed) is joined to the back sheet 23. In the present embodiment, a composite material in which a knitted fabric having a fine loop structure formed of synthetic fibers and a plastic film are laminated is used as the frontal tape 24.

  FIG. In the seat portion 41 shown in FIG. 5B and FIG. 5, the entire region excluding the temporary engagement region 414 of the exposed portion other than the portion covered with the hook member 42 and the side seat 31 of the first main surface 413 is the hook member. 42, the entire region excluding the portion covered with the hook member 42 on the inner surface of the folded portion 411 is the non-engageable region. 415.

  FIG. The main surface 416 opposite to the first main surface 413 of the sheet portion 41 shown in B (that is, the main surface on the backsheet 23 side, hereinafter referred to as “second main surface 416”) is the sheet portion 41. By being embossed at the time of manufacture, the fine hook structure of the hook member 42 can be engaged. The engagement force between the hook member 42 and the second main surface 416 of the seat portion 41 is substantially the same as or less than the engagement force between the hook member 42 and the frontal tape 24 (see FIG. 1). 42 is larger than the engagement force in the temporary engagement between the temporary engagement region 414 of the seat portion 41 and the seat portion 41. Further, the temporary engagement region 414 of the sheet portion 41 is raised by a raising roller or the like with respect to the first main surface 413 that is formed so as to be substantially unengageable with the hook member 42 when the sheet portion 41 is manufactured. It is formed by applying.

  When manufacturing and transporting the absorbent article 1, FIG. As shown in A, the hook member 42 is temporarily engaged with the temporary engagement region 414 of the seat portion 41 in a state where the folded portion 411 of the fastening member 4 is folded. When the absorbent article 1 is attached to the wearer, the hook member is pulled by pulling the folded-back portion 411 of the fastening member 4 such that the tip 417 of the folded-back portion 411 is picked by the user. 42 is peeled off from the temporary engagement region 414 (that is, the temporary engagement of the hook member 42 with respect to the temporary engagement region 414 is released), FIG. As shown in FIG. 5B and FIG. 5, the folded portion 411 is extended.

  Thereafter, the front part 201 and the rear part 203 of the main body part 2 shown in FIG. 2 are brought into contact with the skin on the abdomen and the back side of the wearer, and the hook members 42 (see FIG. 5) of the pair of fastening members 4 are As shown in FIG. 1, the absorbent article 1 is attached to the wearer by engaging with a frontal tape 24 provided on a surface opposite to the wearer side in the front part 201 of the main body 2. In the absorbent article 1, since the sheet | seat part 41 of the fastening member 4 is formed with the nonwoven fabric, the breathability in a wearer's waist circumference improves and the comfort of the absorbent article 1 improves.

  In addition, the wearer absorbs the absorbent article 1 after assembling the absorbent article 1 into a pant shape by engaging the hook member 42 of the fastening member 4 with the frontal tape 24 without bringing the main body 2 into contact with the wearer. The absorbent article 1 may be attached by inserting a foot into the article 1.

  Next, a method for manufacturing the fastening member 4 will be described. FIG. 6 is a front view showing a fastening member manufacturing apparatus 9 for manufacturing the fastening member 4, and FIG. 7 is a plan view showing a part of the fastening member manufacturing apparatus 9. In FIG. 7, in order to facilitate understanding of the drawing, the region 814 to be the temporary engagement region 414 (see FIG. 5), the fine hook structure of the hook member 42, and the hot melt adhesive are indicated by parallel diagonal lines. (The same applies to FIGS. 13 and 17). The fixing member manufacturing apparatus 9 is a part of a manufacturing apparatus that manufactures the absorbent article 1, and FIG. 8 is a diagram illustrating a flow of manufacturing the fixing member 4 by the fixing member manufacturing apparatus 9.

  As shown in FIG. 6, the fastening member manufacturing apparatus 9 is provided with a first roll attachment to which a roll around which a first sheet member 81 scheduled to be the sheet portion 41 (see FIG. 5) of the fastening member 4 is wound is attached. Part 91 and a second roll attachment part 92 to which a roll around which a second sheet member 82 scheduled to be the hook member 42 (see FIG. 5) of the fastening member 4 is wound is provided, and the first roll attachment part The first sheet member 81 fed from 91 is conveyed in a predetermined conveyance direction (that is, from the left side to the right direction in FIG. 6).

  Further, as shown in FIGS. 6 and 7, the fastening member manufacturing apparatus 9 includes two raised rolls 93 that rotate about an axis that faces the width direction perpendicular to the conveying direction of the first sheet member 81, the first sheet. On the first sheet member 81, adhesive supply portions 941, 942, and 943 that apply an adhesive to one main surface 813 of the member 81 (that is, the main surface that is to become the first main surface 413 of the sheet portion 41). The joining roll 95 that joins the second sheet member 82, the first sheet member 81, the first cutting part 96 that continuously cuts the center in the width direction of the second sheet member 82, and the first sheet member 81 are cut. The second cutting portion 98 that forms the plurality of fastening members 4 is provided, and as shown in FIG. 6, a portion 811 (hereinafter simply referred to as “folding back”) that is to be the folding portion 411 (see FIG. 5) of the sheet portion 41. Part 811 ") It provided with a folded plate 97 to return.

  In the state before the processing by the fastening member manufacturing apparatus 9 shown in FIGS. 6 and 7 is performed, the main surface 813 of the first sheet member 81 formed of the nonwoven fabric is the hook member 42 of the fastening member 4 (FIG. 5). And substantially unengageable. Further, the main surface 816 opposite to the main surface 813 of the first sheet member 81 shown in FIG. 6 (that is, the main surface scheduled to be the second main surface 416 of the fastening member 4) has an embossed shape. It is possible to engage with the hook member 42 of the fastening member 4.

  When the fastening member 4 is manufactured by the fastening member manufacturing apparatus 9, first, the primary surface 813 of the first sheet member 81 that is fed from the first roll mounting portion 91 and transported in a predetermined transport direction is used. 6 and 7 are brought into contact with each other while rotating counterclockwise in FIG. In the present embodiment, the raised roll 93 has a substantially cylindrical shape or a substantially columnar shape with no irregularities formed on the outer peripheral surface. In addition, as the raising roll 93, one having a plurality of protrusions or recesses on the outer peripheral surface, or one having a plurality of grooves extending in the axial direction on the outer peripheral surface may be used.

  As shown in FIG. 7, the two raised rolls 93 abut on both sides of the central portion in the width direction on the main surface 813 of the first sheet member 81. In the area | region which contact | abutted the raising roll 93 of the main surface 813 of the 1st sheet | seat member 81, the raising process by rotation of the raising roll 93 is performed with respect to the fiber which comprises a nonwoven fabric. As a result, two regions 814 that extend in the conveying direction on both sides of the central portion in the width direction of the first sheet member 81 and each have a fine loop structure (that is, the temporary engagement regions 414 of the sheet portion 41 are planned to be formed). (Hereinafter, simply referred to as “temporary engagement region 814”) is formed (step S11). On the main surface 813 of the first sheet member 81, a region 8151 extending in the transport direction between the two temporary engagement regions 814, and 2 extending in the transport direction outside the width direction of the two temporary engagement regions 814. The two regions 8152 are non-engageable regions that are substantially non-engageable with the fine hook structure in the hook member 42 (see FIG. 5) of the fastening member 4.

  In the fastening member manufacturing apparatus 9, the movement direction of the outer peripheral surface of the raised roll 93 at the contact portion between each raised roll 93 and the first sheet member 81 coincides, and the outer periphery of the raised roll 93 at the contact portion. The moving speed of the surface (that is, the rotational speed of the raising roll 93) is made larger than the moving speed of the first sheet member 81. Thereby, the raising process by the raising roll 93 is more reliably performed, and the temporary engagement region 814 is easily and more reliably formed on the main surface 813 of the first sheet member 81. Moreover, since the unevenness | corrugation is not formed in the outer peripheral surface of the raising roll 93, while being able to make the grade of the raising state of the temporary engagement area | region 814 into an appropriate range easily, the raising roll 93 and the 1st sheet | seat member Thus, the fastening member 4 can be manufactured more smoothly by reducing the frictional resistance between the fixing member 4 and the terminal 81.

  Subsequently, the hot melt adhesive 810a is applied along the transport direction in the vicinity of the edges on both sides in the width direction on the main surface 813 of the first sheet member 81 by the two adhesive supply units 941, and the adhesive supply unit 942, the hot melt adhesive 810 b extends along the conveyance direction at the center in the width direction of the region 8151 extending in the conveyance direction between the two temporary engagement regions 814 (that is, the center in the width direction of the first sheet member 81). Is applied (step S12). The width of the hot melt adhesive 810 b applied to the region 8151 is made smaller than the width of the region 8151.

  Next, the second sheet member 82 fed out from the second roll mounting portion 92 shown in FIG. 6 is transported in the same manner as the first sheet member 81 via the joining roll 95 as shown in FIGS. 7 and is bonded to the region 8151 on the main surface 813 of the first sheet member 81 shown in FIG. 7 via the hot melt adhesive 810b applied in step S12 (step S13). The width of the second sheet member 82 is substantially equal to the width of the hot melt adhesive 810 b applied to the region 8151 and is narrower than the width of the region 8151. A fine hook structure (that is, a hook member) that can be temporarily engaged with the fine loop structure of the temporary engagement region 814 is provided on the surface of the second sheet member 82 opposite to the surface bonded to the first sheet member 81. 42 to be a fine hook structure).

  When the second sheet member 82 is joined to the first sheet member 81, the first sheet member 81 and the second sheet member 82 are disposed between the cutting roll 961 and the anvil roll 962 of the first cutting portion 96 shown in FIG. Sandwiched between. The cutting roll 961 is rotated counterclockwise in FIG. 6 around the axis facing the width direction, and the anvil roll 962 is rotated clockwise in FIG. 6 about the axis facing the width direction. ing. As shown in FIG. 7, a cutting blade 9611 extending in the circumferential direction while meandering is formed on the outer peripheral surface of the cutting roll 961.

  In the first cutting unit 96, the cutting blade 9611 of the cutting roll 961 cuts the first sheet member 81 and the second sheet member 82 along a cutting line 8153 extending in the conveying direction while meandering. A plurality of projecting portions projecting from one of the provisional engagement regions 814 toward the other (that is, a portion that is to be the folded portion 411 and hereinafter simply referred to as “folded portion 811”) are formed (see FIG. Step S14). The cutting line 8153 snakes in the region 8151 of the first sheet member 81 with an amplitude larger than the width of the second sheet member 82, extends in the conveying direction while crossing the second sheet member 82, and follows the cutting line 8153. The plurality of pieces of the second sheet member 82 cut in this manner become hook members 42 in the folded portions 811.

  Subsequently, each folded portion 811 is folded back to the main surface 813 side of the first sheet member 81 by a folding line parallel to the conveying direction by the folded plate 97 shown in FIG. Then, as shown in FIG. 7, the hook member 42 of each folded portion 811 faces the temporary engagement region 814, and the fine hook structure of the hook member 42 of each folded portion 811 is the fine loop structure of the temporary engagement region 814. Are temporarily engaged (step S15). A nip roll that presses the folded portion 811 toward the temporary engagement region 814 is provided between the folded plate 97 (see FIG. 6) and the second cutting portion 98, and the folded portion 811 enters the temporary engagement region 814. On the other hand, temporary engagement may be more reliably performed.

  Next, the hot melt adhesive 810c is moved along the transport direction between the temporary engagement region 814 and the hot melt adhesive 810a on the main surface 813 of the first sheet member 81 by the two adhesive supply units 943. After the application, the first sheet member 81 is sandwiched between the cutting roll 981 and the anvil roll 982 of the second cutting portion 98 shown in FIG. The cutting roll 981 rotates counterclockwise in FIG. 6 around an axis facing the width direction, and the anvil roll 982 rotates clockwise about the axis facing the width direction in FIG. ing.

  In the second cutting part 98, the first sheet member 81 is cut between the folded parts 811 along a cutting line parallel to the width direction, so that the plurality of fastening members 4 each having two folded parts 411. Is formed (step S16). After that, in the manufacturing apparatus for the absorbent article 1, these fastening members 4 make the temporarily engaged folded portion 411 face the side sheet 31 and make the attachment portion 412 protrude outward from the edge of the side sheet 31. It is placed on the side sheet 31 and temporarily bonded onto the side sheet 31 via the hot melt adhesive 810c. Then, when the side sheet 31 is joined to the back sheet 23 (see FIG. 4.A) or the like, the attachment portion 412 is folded back so as to sandwich the side sheet 31, and the side sheet 31 is interposed via the hot melt adhesive 810a. And the back sheet 23.

  As described above, in the fastening member 4, the temporary engagement region 414 facing the hook member 42 of the folded portion 411 is provided on the first main surface 413 of the sheet portion 41, and at the time of manufacturing the absorbent article 1, The fastening member 4 is handled in a state where the hook member 42 is temporarily engaged with the temporary engagement region 414 (that is, a state where the fine hook structure of the hook member 42 is not exposed). Thereby, in the manufacturing apparatus of the absorbent article 1, the hook member 42 of the fastening member 4 is prevented from engaging with other parts that are not planned, and the absorbent article 1 is manufactured smoothly and easily. be able to.

  In addition, in the first main surface 413 of the seat portion 41, the entire region excluding the hook member 42 of the folded portion 411 is included in the non-engageable region 415 that is substantially non-engageable with the hook member 42. Further, it is possible to prevent the portion near the hook member 42 of the seat portion 41 such as the tip portion 417 of the folded portion 411 from being bent and engaged with the hook member 42. Thus, the absorbent article 1 is mounted by preventing a part (or all) of the fine hook structure of the hook member 42 from being covered with the sheet portion 41 to which the hook member 42 is bonded. The fastening of the front part 201 and the rear part 203 of the main body part 2 by the fastening member 4 when performing the fastening (that is, when using the fastening member 4) can be ensured. As a result, the absorbent article 1 can be reliably attached.

  In the fastening member 4, the entire region excluding the temporary engagement region 414 and the hook member 42 (the portion covered by the hook member 42) of the first main surface 413 of the seat portion 41 is set as the non-engagement region 415, thereby When the wearing member 4 is used, the hook member 42 is more reliably prevented from being covered by the seat portion 41, and the fastening by the fastening member 4 is made more reliable. Moreover, since the whole area | region other than the temporary engagement area | region 414 of the 1st main surface 413 of the sheet | seat part 41 is made into the same property, formation of the sheet | seat part 41 is simplified and manufacture of the fastening member 4 is performed easily. be able to. Furthermore, by temporarily raising the first main surface 413 of the sheet portion 41 where the entire surface is the non-engageable region, the provisional engagement is performed without using another member different from the first sheet member 81. The region 414 is formed easily and at a low cost.

In the sheet | seat part 41 of the fastening member 4, the intensity | strength of the sheet | seat part 41 can be made enough by the fabric weight being 50 g / m < ² > or more. As a result, damage or the like of the sheet portion 41 can be prevented during manufacturing or mounting of the absorbent article 1, and manufacturing and mounting of the absorbent article 1 can be facilitated. Moreover, the manufacturing cost of the sheet | seat part 41 is suppressed, giving sufficient intensity | strength to the sheet | seat part 41 by the fabric weight of the sheet | seat part 41 being 100 g / m < ² > or less.

  In the manufacturing method of the fastening member 4 described above, the folded portion 811 of the first sheet member 81 (that is, the folded portion of the sheet portion 41) to which the hook member 42 (the individual piece of the second sheet member 82 to be formed) is joined. 411), and the fine hook structure of the hook member 42 is temporarily engaged with the temporary engagement region 814 of the first sheet member 81, so that the fine hook structure of the hook member 42 is not exposed. The fastening member 4 can be easily manufactured. Further, by bringing the raised roll 93 into contact with the main surface 813 of the first sheet member 81 that is substantially incapable of engaging with the fine hook structure, the temporary engagement region 814 (that is, the temporary engagement region) is formed on the main surface 813. The region scheduled to be 414) is easily formed. Furthermore, the temporary engagement area | region 814 can be formed more easily because the rotational speed of the raising roll 93 is made larger than the moving speed of the 1st sheet | seat member 81. FIG.

  In the absorbent article 1, the second main surface 416 of the seat portion 41 of the fastening member 4 can be engaged with the hook member 42 (see FIG. 5). When the article 1 is mounted, FIG. As shown in A, the hook member 42 of the other fastening member 4 can be engaged with the second main surface 416 of the sheet portion 41 of one fastening member 4 fastened to the frontal tape 24, Thereby, the trunk | drum opening 11 of the absorbent article 1 can be made small and it can be made to fit a wearer's waist circumference. In addition, FIG. As shown in B, in each fastening member 4, one hook member 42 (see FIG. 5) of the other folded portion 411 is formed on the second main surface 416 of one folded portion 411 secured to the frontal tape 24. By engaging the parts (or all), it is possible to adjust the fastening position of the fastening member 4 in the vertical direction in FIGS.

  Furthermore, when the absorbent article after use is discarded, the shape of the rounded main body can be maintained by fixing the fastening member to the main body after rolling the main body in the longitudinal direction. However, in the absorbent article 1, by fastening one fastening member 4 to the second main surface 416 of the other fastening member 4, the main body 2 can be discarded in a smaller rounded state. . For this reason, it is prevented more reliably that excrement leaks from the clearance gap etc. of the rounded main-body part 2, and sanitary property is improved.

  In the fastening member 4 of the absorbent article 1, one main surface (that is, the first main surface 413) is substantially engaged with the hook member 42 by embossing the second main surface 416 of the sheet portion 41. It is possible to easily form the seat portion 41 that cannot be combined and whose other main surface can be engaged with the hook member 42.

  Next, an absorbent article according to a second embodiment of the present invention will be described. FIG. A is sectional drawing which shows the site | part of the fastening member 4a vicinity of the absorbent article which concerns on 2nd Embodiment, FIG. Corresponds to A. FIG. B and FIG. 11 are a sectional view showing a portion in the vicinity of the fastening member 4a showing a state in which the folded portion 411 is extended, and a plan view of the fastening member 4a, respectively, and FIG. 4 in the first embodiment. This corresponds to B and FIG. FIG. A, FIG. As shown in FIG. 11B and FIG. 11, in the fastening member 4a, a temporary engagement region 414a having another structure is provided in the seat portion 41a instead of the temporary engagement region 414 which is the raised region shown in FIG. Other configurations of the absorbent article according to the second embodiment are the same as those of the absorbent article 1 shown in FIGS. 1 to 5, and are denoted by the same reference numerals in the following description.

  FIG. As shown to A, the fixing member 4a is the sheet | seat part 41a formed with the nonwoven fabric similarly to 1st Embodiment, and the inner surface (namely, 1st main part) of the folding | returning part 411 of the sheet | seat part 41a. A hook member 42 joined to the surface 433), and the sheet portion 41a is formed as shown in FIG. A, FIG. As shown in B and FIG. 11, a first nonwoven fabric 43 and a second nonwoven fabric 44 laminated on the first nonwoven fabric 43 are provided.

As shown in FIG. 11, the first nonwoven fabric 43 has the same shape as the sheet portion 41 shown in FIG. 5 in a plan view, and is formed by the same manufacturing method using the same material as the sheet portion 41. . In other words, the 1st nonwoven fabric 43 shown in FIG. 11 is equal to the sheet | seat part 41 in which raising process is not performed. FIG. The first main surface 433 that is the upper main surface of the first nonwoven fabric 43 in B is substantially incapable of engaging with the fine hook structure of the hook member 42. Moreover, the 2nd main surface 436 which is the lower main surface of the 1st nonwoven fabric 43 can be engaged with the fine hook structure of the hook member 42 by embossing. The basis weight of the first nonwoven fabric 43 is preferably 50 g / m ² or more and 100 g / m ² or less (more preferably 50 g / m ² or more and 85 g / m ² or less).

As shown in FIG. 11, the second non-woven fabric 44, which has a long and narrow rectangular shape in a plan view, is shown in FIG. The upper main surface in B has a fine loop structure and is bonded onto the first non-woven fabric 43 with the lower main surface facing the first main surface 433 of the first non-woven fabric 43. The second nonwoven fabric 44 is preferably a long fiber nonwoven fabric formed by a spunbond method, a melt blow method, or the like, or a short fiber nonwoven fabric formed by an air-through method, a point bond method, an airlaid method, or the like. Then, it is set as the long-fiber nonwoven fabric formed by the spun bond method or the SMS method. The basis weight of the second nonwoven fabric 44 is preferably 10 g / m ² or more and less than 50 g / m ² (more preferably 10 g / m ² or more and 30 g / m ² or less).

  At the time of manufacture and transportation of the absorbent article according to the second embodiment, the folded portion 411 of each fastening member 4a is formed as shown in FIG. As shown in A, the hook member 42 is folded back, the hook member 42 faces the second nonwoven fabric 44 of the sheet portion 41a, and the fine hook structure of the hook member 42 is the fine loop structure of the second nonwoven fabric 44. Is temporarily engaged. That is, in the absorbent article according to the second embodiment, the upper main surface of the second nonwoven fabric 44 (that is, the main surface opposite to the main surface joined to the first nonwoven fabric 43) is the hook member 42. Is a temporary engagement region 414a to be temporarily engaged.

  Further, when the absorbent article is mounted, in each fastening member 4a, as in the first embodiment, FIG. As shown in B, the temporary engagement of the hook member 42 with respect to the second nonwoven fabric 44 is released, the folded portion 411 is extended, and the front portion 201 and the rear portion 203 (see FIG. 2) of the main body portion 2 are attached to the wearer's stomach. The absorbent article is worn by engaging the hook members 42 of the pair of fastening members 4a with the frontal tape 24 (see FIG. 1) of the main body 2 in a state of being in contact with the skin on the side and the back side. Worn by the person.

  Next, a method for manufacturing the fastening member 4a will be described. FIG. 12 is a front view showing a fastening member manufacturing apparatus 9a for manufacturing the fastening member 4a, and FIG. 13 is a plan view showing a part of the fastening member manufacturing apparatus 9a. Moreover, FIG. 14 is a figure which shows a part of flow of manufacture of the fastening member 4a by the fastening member manufacturing apparatus 9a. The fastening member manufacturing apparatus 9a is a part of a manufacturing apparatus that manufactures the absorbent article according to the second embodiment.

  As shown in FIG. 12, the fastening member manufacturing apparatus 9 a is scheduled to be the second nonwoven fabric 44 (see FIG. 11) instead of the two raised rolls 93 of the fastening member manufacturing apparatus 9 shown in FIGS. 6 and 7. The third sheet member 83 is provided with two third roll attachment portions 93a to which the rolls around which the third sheet member 83 is wound are attached. Other configurations are the same as those of the fastening member manufacturing apparatus 9 shown in FIGS. 6 and 7, and the same reference numerals are given in the following description.

  When the fastening member 4a is manufactured by the fastening member manufacturing device 9a, first, the first sheet member 81 (that is, the first sheet in the first embodiment) that will be the first nonwoven fabric 43 of the sheet portion 41a. Sheet member 81) is fed out from the first roll mounting portion 91 shown in FIG. 12 and conveyed in a predetermined conveying direction, and the first sheet member as shown in FIG. Hot melt adhesives 810a and 810d are applied to four regions extending along the conveying direction on the main surface 813 of 81 (step S21). The hot melt adhesive 810a is applied in the vicinity of the edges on both sides in the width direction of the first sheet member 81, and the hot melt adhesive 810d is applied on both sides in the center portion in the width direction.

  Subsequently, the third sheet member 83 fed out from each of the two third roll attachment portions 93a (see FIG. 12) is conveyed in the same conveyance direction as the first sheet member 81, while the main sheet member 81 has a main sheet. It is bonded onto the surface 813 via the hot melt adhesive 810d applied in step S21 (step S22). The main surface 813 of the first sheet member 81 is substantially incapable of engaging with the fine hook structure of the hook member 42 (see FIG. 11), as in the first embodiment. A fine loop structure that can be engaged with the fine hook structure of the hook member 42 is formed on the surface of the third sheet member 83 opposite to the surface joined to the first sheet member 81. That is, step S22 is a step of forming a region 814a (hereinafter, referred to as “temporary engagement region 814a”) that is to be two temporary engagement regions 414a having a fine loop structure.

  The subsequent steps are the same as steps S12 to S16 (see FIG. 8) in the first embodiment, and an area 8151 extending in the conveyance direction between the two third sheet members 83 by the adhesive supply unit 942. After the hot melt adhesive 810b is applied along the conveying direction at the center in the width direction of the sheet, the second sheet member 82 drawn out from the second roll mounting portion 92 shown in FIG. Is bonded to the region 8151 on the main surface 813 of the first sheet member 81 via the hot melt adhesive 810b (steps S12 and S13).

  Next, in the first cutting section 96 shown in FIGS. 12 and 13, the first sheet member 81 and the second sheet member 82 are meandering along a cutting line 8153 extending in the conveying direction while meandering as shown in FIG. The plurality of folded portions 811 that are cut and project from one of the two third sheet members 83 (that is, the temporary engagement region 814a) toward the other are formed (step S14). When the folded portion 811 is formed, each folded portion 811 is folded toward the main surface 813 side of the first sheet member 81 by a folding plate 97 shown in FIG. The hook member 42 (see FIG. 11) is temporarily engaged with the fine loop structure of the third sheet member 83 (step S15).

  Then, by the two adhesive supply units 943 shown in FIG. 13, hot melt bonding is performed on the main surface 813 of the first sheet member 81 between the third sheet member 83 and the hot melt adhesive 810a along the conveyance direction. After the agent 810c is applied, in the second cutting part 98 shown in FIGS. 12 and 13, the first sheet member 81 and the third sheet member 83 are separated by a cutting line parallel to the width direction between the folded parts 811. By being cut, a plurality of fastening members 4a each having two folded portions 411 are formed (step S16). Thereafter, these fastening members 4a are temporarily bonded onto the side sheet 31 via the hot melt adhesive 810c, and the side sheet 31 and the back sheet 23 (see FIG. 10) of the main body 2 via the hot melt adhesive 810a. .A)).

  As described above, in the absorbent article according to the second embodiment, the hook member 42 of the fastening member 4a is temporarily attached to the temporary engagement region 414a of the seat portion 41a as in the first embodiment. In an engaged state (that is, a state where the fine hook structure of the hook member 42 is not exposed), the absorbent article can be manufactured smoothly and easily. Further, in the first main surface 433 of the first nonwoven fabric 43 of the sheet portion 41a, the entire region excluding the hook member 42 of the folded portion 411 shown in FIG. By being included in the impossible region 415, it is possible to prevent a part (or all) of the fine hook structure of the hook member 42 from being covered, and to secure the fastening by the fastening member 4a when mounting the absorbent article. Can be. As a result, the absorbent article can be reliably attached.

  Furthermore, in the fastening member 4a, a region excluding the temporary engagement region 414a and the hook member 42 (that is, the second nonwoven fabric 44 and the hook member 42 is covered) on the first main surface 433 of the first nonwoven fabric 43 of the seat portion 41a. Since the entire region (excluding the broken portion) is set as the non-engageable region 415, the hook member 42 is covered with the seat portion 41a when the fastening member 4a is used, as in the first embodiment. This is more reliably prevented, and the fastening by the fastening member 4a is more reliable.

In the sheet | seat part 41a of the fastening member 4a, the intensity | strength of the sheet | seat part 41a can be made enough by the fabric weight of the 1st nonwoven fabric 43 being 50 g / m < ² > or more. As a result, damage or the like of the sheet portion 41a can be prevented during manufacturing or mounting of the absorbent article, and manufacturing and mounting of the absorbent article can be facilitated. Moreover, the manufacturing cost of the sheet | seat part 41a is suppressed, giving sufficient intensity | strength to the sheet | seat part 41a because the fabric weight of the 1st nonwoven fabric 43 shall be 100 g / m < ² > or less.

In the fastening member 4a, as described above, the second nonwoven fabric 44 having a fine loop structure is joined to the first main surface 433 of the first nonwoven fabric 43 that is substantially incapable of engaging with the hook member 42 as described above. The temporary engagement region 414a can be easily formed. In addition, the second nonwoven fabric 44 is a thin nonwoven fabric having a large gap between fibers (that is, a basis weight of 10 g / m ² or more and less than 50 g / m ² ). The temporary engagement of the fine loop structure is easily realized. Furthermore, the manufacturing cost of the second nonwoven fabric 44 can be reduced while improving the strength of the second nonwoven fabric 44.

  Next, an absorbent article according to a third embodiment of the present invention will be described. FIG. 15 is a plan view showing the fastening member 4b of the absorbent article according to the third embodiment. FIG. 15 shows a state in which the folded portion 411 of the fastening member 4b is extended. As shown in FIG. 15, in the fastening member 4b, the length of the hook member 42a in the longitudinal direction of the absorbent article (that is, the vertical direction in FIG. 15) is the length of the folded portion 411 at the portion where the hook member 42a is provided. Smaller than that. The other structure of the fastening member 4b is shown in FIG. A, FIG. B and the fastening member 4a shown in FIG. 11, and the same reference numerals are given in the following description.

  FIG. 16 is a front view showing a fastening member manufacturing apparatus 9b for manufacturing the fastening member 4b, and FIG. 17 is a plan view showing a part of the fastening member manufacturing apparatus 9b. Moreover, FIG. 18 is a figure which shows the flow of manufacture of the fastening member 4b by the fastening member manufacturing apparatus 9b. The fastening member manufacturing apparatus 9b is a part of a manufacturing apparatus that manufactures the absorbent article according to the third embodiment.

  As shown in FIG. 16, the fastening member manufacturing apparatus 9 b is a second sheet member that is fed out from the second roll mounting portion 92 instead of the joining roll 95 of the fastening member manufacturing apparatus 9 a shown in FIGS. 12 and 13. The hook member piece 821 is cut to form a plurality of hook member pieces 821 (see FIG. 17), and a hook member piece bonding portion 99 for bonding these hook member pieces 821 to the first sheet member 81 is provided. Other configurations are substantially the same as those of the fastening member manufacturing apparatus 9a shown in FIGS. 12 and 13, and the same reference numerals are given in the following description. Further, the flow of manufacturing the fastening member 4b by the fastening member manufacturing apparatus 9b is the second except for the bonding process of the second sheet member 82 to be the hook member 42a (see FIG. 15) to the first sheet member 81. This is almost the same as the manufacturing flow of the fastening member 4a according to the embodiment.

  As shown in FIGS. 16 and 17, the hook member piece bonding portion 99 is temporarily engaged with the fine loop structure of the second nonwoven fabric 44 (see FIG. 15) on one surface by cutting the second sheet member 82. A cutting roll 991 for forming a plurality of hook member pieces 821 (that is, individual pieces to be hook members 42a) formed with possible fine hook structures, and holding the plurality of hook member pieces 821 on the outer peripheral surface A transport roll 992 that rotates to transport the hook member piece 821 onto the first main surface 813 of the first sheet member 81 is provided. As shown in FIG. 16, the first sheet member 81 and the transport roll 992 A pressing roll 993 is provided to bond the hook member piece 821 to the first main surface 813 of the first sheet member 81 by sandwiching the hook member piece 821 (see FIG. 17).

  When the fastening member 4b is manufactured by the fastening member manufacturing apparatus 9b, first, with respect to the first sheet member 81 fed out from the first roll mounting portion 91 shown in FIG. 16 and transported in a predetermined transport direction. Then, as shown in FIG. 17, the hot-melt adhesives 810a and 810d are applied by the adhesive supply unit 941 (step S31). Subsequently, the third sheet member 83 fed out from the two third roll attachment portions 93a (see FIG. 16) is bonded onto the main surface 813 of the first sheet member 81 via the hot melt adhesive 810d. (Step S32).

  Next, with respect to one surface of the second sheet member 82 drawn out from the second roll mounting portion 92 shown in FIG. 16 (that is, the surface opposite to the side that becomes the temporary engagement region 414a shown in FIG. 15). The hot melt adhesive is applied by the adhesive supply unit 942 shown in FIGS. 16 and 17 (step S33), and is perpendicular to the conveying direction of the second sheet member 82 by the cutting roll 991 of the hook member piece bonding unit 99. By cutting the second sheet member 82 along the cutting line, a plurality of rectangular hook member pieces 821 shown in FIG. 17 are formed (step S34).

  Each hook member piece 821 is held on the outer peripheral surface of the conveying roll 992 and conveyed to the first sheet member 81, and the surface to which the hot melt adhesive is applied (that is, the surface opposite to the fine hook structure) is provided. The first sheet member 81 is bonded to the region 8151 while facing the region 8151 on the main surface 813 (step S35). At this time, the plurality of hook member pieces 821 are joined to the first sheet member 81 in a state of being arranged in the conveying direction of the first sheet member 81 at an equal pitch while providing a gap therebetween.

  When the hook member piece 821 is bonded, the first sheet member 81 is cut along the cutting line 8153 that meanders through the gap between the plurality of hook member pieces 821 and extends in the conveying direction in the first cutting portion 96. A plurality of folded portions 811 are formed (step S36), each folded portion 811 is folded, and the hook member 42a (see FIG. 15) is temporarily attached to the fine loop structure of the third sheet member 83 (ie, the temporary engagement region 814a). Engaged (step S37).

  Then, after the hot melt adhesive 810c is applied to the main surface 813 of the first sheet member 81 by the two adhesive supply units 943, the first sheet member 81 and the third sheet member 83 are obtained at the second cutting unit 98. However, a plurality of fastening members 4b each having two folded portions 411 are formed by cutting between the folded portions 811 along a cutting line parallel to the width direction (step S38). Thereafter, these fastening members 4b are temporarily bonded onto the side sheet via the hot melt adhesive 810c, and are joined between the side sheet and the back sheet via the hot melt adhesive 810a.

  As described above, in the absorbent article according to the third embodiment, similarly to the first and second embodiments, the hook member 42a of the fastening member 4b is a temporary engagement region of the seat portion 41a. The absorbent article can be manufactured smoothly and easily in a state of being temporarily engaged with 414a (that is, a state in which the fine hook structure of the hook member 42a is not exposed). In addition, on the first main surface 433 of the first nonwoven fabric 43 of the sheet portion 41a, the entire region excluding the hook member 42a of the folded portion 411 is substantially incapable of engaging with the hook member 42a as shown in FIG. In this case, a part (or all) of the fine hook structure of the hook member 42a is prevented from being covered, and the fastening by the fastening member 4b when the absorbent article is attached is prevented. Wearing can be ensured. Furthermore, the whole area | region except the temporary engagement area | region 414a and the hook member 42a is made into the non-engagement area | region 415 among the 1st main surfaces 433 of the 1st nonwoven fabric 43 of the sheet | seat part 41a, By the fastening member 4b Fastening is assumed to be more reliable.

  In the fastening member 4b, in particular, the manufacturing cost of the fastening member 4b can be reduced by making the length of the hook member 42a in the longitudinal direction of the absorbent article shorter than the folded portion 411. Moreover, in the manufacturing method of the fastening member 4b described above, in forming the folded portion 411 by the first cutting portion 96, the second sheet member 82 having relatively high rigidity is not cut, and only the first sheet member 81 is cut. Since the cutting is performed, the life of the cutting roll 961 of the first cutting unit 96 is increased.

  Next, an absorbent article according to a fourth embodiment of the present invention will be described. FIG. 19 is a plan view showing the fastening member 4c of the absorbent article according to the fourth embodiment, and FIG. 19 shows a state in which the folded portion 411 is extended (FIG. 5 in the first embodiment). Correspondence). FIG. 20 is a cross-sectional view of the fastening member 4c taken along a plane perpendicular to the width direction at the position CC shown in FIG. As shown in FIGS. 19 and 20, in the fastening member 4c, instead of the temporary engagement region 414 which is the raised region shown in FIG. 5, a hook-like shape formed by slightly bending a part of the sheet portion 41 is used. The temporary engagement area | region 414b which is a collar area | region which has this micro uneven | corrugated structure is provided. Other configurations of the absorbent article according to the fourth embodiment are the same as those of the absorbent article 1 shown in FIGS. 1 to 5, and are denoted by the same reference numerals in the following description. In FIG. 20, the unevenness of the sheet portion 41 is drawn larger than the actual for convenience of illustration.

As shown in FIG. 19, the fastening member 4 c is formed in the same manner as in the first embodiment by the sheet portion 41 formed of a nonwoven fabric and the inner surface of the folded portion 411 of the sheet portion 41 (that is, the first portion A hook member 42 joined to the main surface 413) is provided, and the first main surface 413 is substantially unengageable with the fine hook structure of the hook member 42. Further, the second main surface 416 which is the lower main surface of the seat portion 41 can be engaged with the fine hook structure of the hook member 42 by being embossed. The basis weight of the sheet portion 41 is preferably 50 g / m ² or more and 100 g / m ² or less (more preferably 50 g / m ² or more and 85 g / m ² or less).

  In FIG. 19, the provisional engagement region 414 b with parallel diagonal lines is a ridge region provided on the first main surface 413 of the seat portion 41 as described above, and the hook member 42 is formed by a ridge-like micro uneven structure. And can be temporarily engaged with the fine hook structure. At the time of manufacturing and transporting the absorbent article according to the fourth embodiment, the folded portion 411 of each fastening member 4c is folded back with the hook member 42 inside as in the first embodiment ( The hook member 42 is opposed to the temporary engagement region 414b of the seat portion 41, and the fine hook structure of the hook member 42 is temporarily engaged with the temporary engagement region 414b.

  Further, when the absorbent article is mounted, the temporary engagement of the hook member 42 with respect to the temporary engagement region 414b is released in each fastening member 4c as shown in FIG. 19, as in the first embodiment. Hooks of the pair of fastening members 4c in a state in which the folded portion 411 is extended and the front part 201 and the rear part 203 (see FIG. 2) of the main body part 2 are brought into contact with the skin on the abdomen and dorsal side of the wearer. The absorbent article is attached to the wearer by engaging the member 42 with the frontal tape 24 (see FIG. 1) of the main body 2.

  Next, a method for manufacturing the fastening member 4c will be described. FIG. 21 is a front view showing a fastening member manufacturing apparatus 9c for manufacturing the fastening member 4c. The plan view of the fastening member manufacturing apparatus 9c is the same as the plan view (see FIG. 7) of the fastening member manufacturing apparatus 9 according to the first embodiment. As shown in FIG. 21, the fastening member manufacturing apparatus 9c includes two gear sets 93b instead of the two raised rolls 93 of the fastening member manufacturing apparatus 9 shown in FIGS. 6 and 7, and each gear set 93b includes The upper side and the lower side of the first sheet member 81 (that is, the side facing the main surface 813 and the side facing the main surface 816) are opposed to each other with the first sheet member 81 interposed therebetween, and rotate while meshing with each other. Two gears 931 and 932 are provided. Other configurations are the same as those of the fastening member manufacturing apparatus 9 shown in FIGS. 6 and 7, and the same reference numerals are given in the following description.

  FIG. 22 is a diagram illustrating a part of the flow of manufacturing the fastening member 4c by the fastening member manufacturing apparatus 9c. When the fastening member 4c is manufactured by the fastening member manufacturing apparatus 9c, first, the first sheet member 81 that is fed out from the first roll mounting portion 91 and transported in a predetermined transport direction has two sets of gears. By passing between the meshed gears 931 and 932 of the set 93b, the main surface 813 of the first sheet member 81 that is substantially incapable of engaging with the fine hook structure of the hook member 42 has two flange regions ( That is, a region that is to be the temporary engagement region 414b (see FIG. 20), and is hereinafter referred to as “temporary engagement region” (step S41).

  The subsequent steps are the same as steps S12 to S16 (see FIG. 8) in the first embodiment, and the hot melt adhesive is applied to the first sheet member 81 by the adhesive supply unit 941 and the adhesive supply unit 942. After that, the second sheet member 82 drawn out from the second roll attachment portion 92 is bonded to the region between the two temporary engagement regions on the main surface 813 of the first sheet member 81 by the joining roll 95. (See FIG. 7) (Steps S12 and S13). Subsequently, the first sheet member 81 and the second sheet member 82 are cut at the first cutting part 96 to form the folded part 811 (that is, the part to be the folded part 411). 811 is folded back to the main surface 813 side of the first sheet member 81, and the hook members 42 (see FIG. 19) of the folded portions are temporarily engaged with the temporary engagement region 414b (steps S14 and S15). Then, after the hot melt adhesive is applied to the first sheet member 81 by the adhesive supply unit 943, the first sheet member 81 is cut between the folded portions 811 in the second cutting unit 98 (see FIG. 7). As a result, a plurality of fastening members 4c (see FIG. 19) each having two folded portions 411 are formed (step S16).

  As described above, in the absorbent article according to the fourth embodiment, the hook member 42 of the fastening member 4c is temporarily attached to the temporary engagement region 414b of the seat portion 41 as in the first embodiment. In an engaged state (that is, a state where the fine hook structure of the hook member 42 is not exposed), the absorbent article can be manufactured smoothly and easily. Further, in the first main surface 413 of the seat portion 41, the entire region excluding the hook member 42 of the folded portion 411 is included in the non-engageable region 415 that is substantially non-engageable with the hook member 42. A part (or all) of the fine hook structure of the hook member 42 is prevented from being covered, and the fastening by the fastening member 4c when mounting the absorbent article can be ensured. As a result, the absorbent article can be reliably attached. Further, in the fastening member 4c, as in the first embodiment, the entire region excluding the temporary engagement region 414b and the hook member 42 in the first main surface 413 of the seat portion 41 is in an engagement impossible region 415. As a result, the hook member 42 is more reliably prevented from being covered with the seat portion 41 when the fastening member 4c is used.

In the seat portion 41 of the fastening member 4c, as in the first embodiment, the basis weight of the seat portion 41 is set to 50 g / m ² or more and 100 g / m ² or less, so that the sheet portion 41 has sufficient strength. While giving, the manufacturing cost of the sheet | seat part 41 is suppressed.

  In the fixing member 4c, as described above, the provisional engagement region 414b, which is a flange region, is provided on the first main surface 413 of the sheet portion 41, the entire surface of which is substantially unengageable with the hook member 42. The temporary engagement region 414b can be formed easily and at low cost without using another member different from the portion 41. Further, in the method for manufacturing the fastening member 4c described above, the first sheet member 81 is passed between the two gears 931 and 932, whereby the temporary engagement region (that is, the main surface 813 of the first sheet member 81) (that is, , A region to be a temporary engagement region 414b) can be easily formed.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible.

  For example, in the fastening part 4 of the absorbent article 1 according to the first and fourth embodiments, a hook member 42a shown in FIG. 15 is provided in the folded part 411 instead of the hook member 42 shown in FIG. Also good.

  In manufacture of the fastening part which concerns on the said embodiment, a temporary engagement area | region may be formed on a sheet | seat part by various methods other than raising process, lamination | stacking of a nonwoven fabric, or formation of the ridge area | region by a gearwheel. Further, in the seat portion of the fastening member, the entire region excluding the temporary engagement region and the hook member is not necessarily the non-engageable region on the first main surface. For example, the temporary engagement region and the hook member Only the surrounding area may be the non-engageable area. Moreover, the whole site | part except the folding | returning part 411 among the 1st main surfaces of a sheet | seat part may be made into a temporary engagement area | region, and only the area | region around the hook member of the folding | returning part 411 may be made into an engagement impossible area | region.

  Even in this case, a portion of the seat portion near the hook member such as the leading end portion 417 of the folded portion 411 or a portion near the temporary engagement region engages with the hook member, and a part of the fine hook structure of the hook member ( Or all) is prevented from being covered. This ensures that the front part 201 and the rear part 203 of the main body 2 are fixed by the hook member of the fixing member when the absorbent article is mounted (that is, when the fixing member is used). can do. In particular, on the first main surface of the fastening member, at least the front end portion 417 of the folded portion 411 that is bent and easily overlaps with the hook member is substantially non-engageable with the fine hook structure of the hook member. It is preferable to be in the impossible region.

  In the absorbent article which concerns on the said embodiment, since the surface on the opposite side to a wearer side can be engaged with the hook member of a fastening member by sufficient engagement force in the front part 201 of the main-body part 2. FIG. If present, the frontal tape 24 may be omitted. In addition, the pair of fastening members are not necessarily provided in the rear portion 203 of the main body portion 2, and are joined to both sides in the width direction of the main body portion 2 at the longitudinal ends of the front portion 201 of the main body portion 2. May be. In this case, when the absorbent article is mounted, the hook members of the pair of fastening members are engaged with the surface opposite to the wearer side in the rear portion 203 of the main body portion 2.

  The sheet | seat part and hook member of the fastening member which concern on the said embodiment may be made into various shapes as needed, and may be provided in other absorbent articles other than an open-type disposable diaper. Even in this case, the fastening member is attached to the main body portion of the absorbent article at least at a part other than the folded portion 411 of the sheet portion.

It is a perspective view of the absorptive article concerning a 1st embodiment. It is a top view of an absorptive article. It is sectional drawing of an absorbent article. It is sectional drawing which shows the site | part of a fastening member vicinity. It is sectional drawing which shows the site | part of a fastening member vicinity. It is a top view of a fastening member. It is a front view of a fastening member manufacturing apparatus. It is a top view which shows a part of fastening member manufacturing apparatus. It is a figure which shows the flow of manufacture of a fastening member. It is a perspective view of the absorbent article which shows the other fastening method of a fastening member. It is a perspective view of the absorbent article which shows the other fastening method of a fastening member. It is sectional drawing which shows the site | part of the fastening member vicinity of the absorbent article which concerns on 2nd Embodiment. It is sectional drawing which shows the site | part of a fastening member vicinity. It is a top view of a fastening member. It is a front view of a fastening member manufacturing apparatus. It is a top view which shows a part of fastening member manufacturing apparatus. It is a figure which shows a part of flow of manufacture of a fastening member. It is a top view of the fixation member concerning a 3rd embodiment. It is a front view of a fastening member manufacturing apparatus. It is a top view which shows a part of fastening member manufacturing apparatus. It is a figure which shows the flow of manufacture of a fastening member. It is a top view of the fastening member of the absorptive article concerning a 4th embodiment. It is sectional drawing of a fixation member. It is a front view of a fastening member manufacturing apparatus. It is a figure which shows a part of flow of manufacture of a fastening member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Absorbent article 2 Main-body part 4,4a, 4b, 4c Fastening member 41,41a Sheet part 42,42a Hook member 43 1st nonwoven fabric 44 2nd nonwoven fabric 81 1st sheet member 82 2nd sheet member 83 3rd sheet member 93 Raised roll 201 Front portion 202 Intermediate portion 203 Rear portion 411 Folded portion 413, 433 First main surface 414, 414a, 414b Temporary engagement region 415 Unengageable region 416, 436 Second main surface 811 Folded portion 813 Main surface 814 , 814a Temporary engagement region 821 Hook member piece 931, 932 Gear 8151 Region 8153 Cutting line S11-S16, S21, S22, S31-S38, S41 Step

Claims (11)

A fastening member that is part of an absorbent article that receives excrement from a wearer,
A sheet portion that is formed of a nonwoven fabric and is a folded portion that is partially folded on another portion, and is attached to the main body portion of the absorbent article at least in a portion other than the folded portion;
A hook member in which a fine hook structure is formed on one surface and the other surface is bonded onto the inner surface of the folded portion;
With
One main surface of the sheet portion including the inner surface of the folded portion,
A temporary engagement region having a fine loop structure that faces the hook member in a state in which the folded portion is folded and can be temporarily engaged with the fine hook structure;
Wherein the temporary engagement region and nonengageable region that is the hook member and the engaging impossible around the hook member,
I have a,
Of the main surface of the seat portion, the entire region excluding the temporary engagement region and the hook member is the non-engagement region,
The fastening member, wherein the temporary engagement region is a raised region formed by performing a raising process on the main surface of the sheet portion that cannot be engaged with the hook member. The fastening member according to claim 1 ,
A fastening member having a basis weight of the sheet portion of 50 g / m ² or more and 100 g / m ² or less. An open-type disposable diaper in which a front part in contact with the skin on the abdomen of the wearer and a rear part in contact with the skin on the back side are fastened and worn around the waist,
The front part which touches a wearer's abdominal skin, the rear part which touches the wearer's back skin, and the abbreviated part which has the middle part which counters the wearer's crotch between the front part and the back part A sheet-like body,
The fastening member according to claim 1 or 2 , which is joined to both sides in the width direction of the main body part at one end of the front part and the rear part of the main body part,
With
The hook member of the fastening member is temporarily engaged with the temporary engagement region at the time of manufacture and conveyance,
When being attached to the wearer, the temporary engagement of the hook member with the temporary engagement region is released, and the other side of the front portion and the rear portion of the main body portion is the surface opposite to the wearer side. A disposable diaper wherein the hook member of the fastening member is engaged with the disposable diaper. The disposable diaper according to claim 3 ,
The disposable diaper characterized in that another main surface of the seat portion of the fastening member is engageable with the hook member. The disposable diaper according to claim 4 ,
A disposable diaper characterized in that it can be engaged with the hook member by embossing the other main surface of the seat portion. A method of manufacturing a fastening member that is part of an absorbent article that receives excrement from a wearer,
a) While transporting the first sheet member formed of the non-woven fabric in a predetermined transport direction, on the main surface of the first sheet member in the transport direction on both sides of the central portion in the width direction perpendicular to the transport direction Forming two temporary engagement regions that extend and each have a fine loop structure;
b) While transporting in the transport direction a second sheet member having a micro hook structure that can be temporarily engaged with the micro loop structure on one surface, the two sheets on the main surface of the first sheet member with extending the transport direction at between Karikakarigo region nonengageable region wherein a fine hook structure and engaging impossible, the other surface of the engaging non width than smaller area the second sheet member Joining, and
c) In the non-engageable region, the first sheet member and the first sheet member meander along the cutting line extending in the conveying direction while meandering with an amplitude larger than the width of the second sheet member and crossing the second sheet member. Forming a plurality of folded portions protruding from one of the two temporary engagement regions toward the other by cutting the two-sheet member;
d) folding each folded portion back at a fold parallel to the transport direction to face the temporary engagement region, and temporarily engaging the fine hook structure of each folded portion with the temporary engagement region;
The manufacturing method of the fastening member characterized by comprising. A method of manufacturing a fastening member that is part of an absorbent article that receives excrement from a wearer,
a) While transporting the first sheet member formed of the non-woven fabric in a predetermined transport direction, on the main surface of the first sheet member in the transport direction on both sides of the central portion in the width direction perpendicular to the transport direction Forming two temporary engagement regions that extend and each have a fine loop structure;
b) cutting the second sheet member to form a plurality of hook member pieces each having a fine hook structure that can be temporarily engaged with the fine loop structure on one surface, and each of the plurality of hook member pieces the surface opposite to the fine hook structure, the a fine hook structure and engaging non with extending in the transport direction in between the said two temporary engagement region in said upper main surface of the first sheet member Bonding the plurality of hook member pieces, each having a width smaller than the width of the non-engageable region, while providing a gap in the non-engageable region, while facing the non-engageable region;
c) In the non-engageable region, the first sheet runs along a cutting line that meanders with an amplitude larger than the width of the second sheet member and extends in the transport direction while passing through the gaps of the plurality of hook member pieces. Forming a plurality of folded portions protruding from one of the two temporary engagement regions toward the other by cutting the member;
d) folding each folded portion back to a fold parallel to the transport direction to face the temporary engagement region, and temporarily engaging the fine hook structure of the hook member piece of each folded portion with the temporary engagement region; ,
The manufacturing method of the fastening member characterized by comprising. It is a manufacturing method of the fixation member according to claim 6 or 7 ,
In the step a), wherein a fine hook structure and engaging impossible to said major surface of said first sheet member, by abutment of the brushed roll rotating about an axis facing the width direction, the two A method for manufacturing a fastening member, wherein a temporary engagement region is formed. It is a manufacturing method of the fixation member according to claim 8 ,
The moving direction of the outer peripheral surface of the raised roll coincides with the conveying direction at the contact portion between the raised roll and the first sheet member, and the moving speed of the outer peripheral surface is higher than the moving speed of the first sheet member. The manufacturing method of the fastening member characterized by being large. It is a manufacturing method of the fixation member according to claim 6 or 7 ,
In the a) step, by between two gears rotating in mesh to pass through the first sheet member, in wrinkle area on the major surface of the fine hook structure and engaging non a is the first sheet member Each of said two temporary engagement area | regions is formed, The manufacturing method of the fastening member characterized by the above-mentioned. It is a manufacturing method of the fixation member according to claim 6 or 7 ,
In the step a), the third sheet member having the fine loop structure on one main surface while transporting the transport direction, the other main surface of said third sheet member, the fine hook structure and engaging impossible The method of manufacturing a fastening member, wherein the two temporary engagement regions are formed by joining to the main surface of the first sheet member.

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