JP2012085726A - Method for manufacturing fastening tape and diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of preventing a cutting failure in a width direction in manufacturing a fastening tape.SOLUTION: A folding margin portion 174 between a pair of fastening regions is folded like a bag in a lower surface, and then a base material sheet 170 is cut along a meandering cutting line 170c. By doing this, a cutting distance w1 in the width direction of the cutting line 170c is shortened. Thus, a cutting failure easily occurring in cutting in the width direction can be prevented. As a result, the base material sheet 170 can be easily and surely cut. Further, by changing a length w2 in the width direction of the folding margin portion 174, fastening tapes having different lengths can be manufactured using a common cutter.

Description

  The present invention relates to a method for producing a fastening tape used for a diaper, and a diaper provided with the fastening tape.

  Conventionally, a diaper that absorbs body fluids such as urine excreted from a wearer is known.

  As an example of a conventional diaper, Patent Document 1 describes a disposable diaper using a fastening tape. In the fastening tape of Patent Document 1, the male side engaging strip of the surface fastener is adhered to the non-woven belt-like body, and then the zigzag line with an amplitude longer than the male side engaging strip is attached. It is manufactured by cutting the band-like body (Claim 7 etc.).

  Patent Document 2 describes a diaper having a fastening member. The fastening member of Patent Literature 2 is formed by joining a fastening material to a continuous fastening composite web and then cutting the fastening composite web along a continuous cutting line including a plurality of repeating patterns. (Claim 1 etc.).

JP 2002-45214 A Special table 2007-521535 gazette

  In recent years, a disposable diaper that assumes that two tabs of a fastening tape are overlapped and fastened on the front abdomen has been desired. In such a disposable diaper, when the tabs are stacked, the length of the tab is increased so that the two fastening members can be directly fastened to the front abdomen of the disposable diaper. Is preferred. However, when such a fastening tape is to be manufactured by the manufacturing method of Patent Document 1 or Patent Document 2, the cutting distance in the width direction becomes long. For this reason, defective cutting tends to occur when cutting in the width direction.

  This invention is made | formed in view of such a situation, and it aims at providing the technique which can suppress the cutting defect of the width direction at the time of manufacture of a fastening tape.

  In order to solve the above-mentioned problem, a first invention of the present application is a method for producing a fastening tape used for a diaper, and a) a pair of fastening regions set on the upper surface of a belt-like base material sheet, A step of attaching each of the fastening members; and b) a fold positioned between the pair of fastening regions of the base sheet so as to make the pair of fastening regions approach before or after the step a). A step of folding the surrogate portion to the lower surface side, and c) a step of cutting the base sheet in a meandering manner while traversing the pair of fastening members after the step a) and the step b), Have

  2nd invention of this application is a manufacturing method of 1st invention, Comprising: After the said process c), the tongue-shaped tab with which the said fastening member was attached was turned back, and the width direction outer side from the said tab. The method further includes a step of temporarily fixing the fixing member to the upper surface of the substrate sheet positioned.

  3rd invention of this application is a manufacturing method of 1st invention or 2nd invention, Comprising: An adhesive agent is apply | coated to at least one part of the said folding margin part of the said base material sheet before the said process b). In the step b), the folding margin portions or the folding margin portions and the other portion of the base sheet are temporarily joined by the adhesive.

  4th invention of this application is a manufacturing method of 1st invention or 2nd invention, Comprising: Between the said process b) and the said process c), the said folding margin parts or the said folding margin parts, and the said base | substrate The method further includes a step of partially joining the other part of the material sheet temporarily by thermocompression bonding.

  A fifth invention of the present application is any one of the manufacturing methods from the first invention to the fourth invention, wherein in the step b), the pair of fastening regions are arranged adjacent to each other through contact or a slight gap. The

  6th invention of this application is a manufacturing method in any one from 1st invention to 5th invention, Comprising: In the said process a), the fixing member of the color different from the said base material sheet is provided in the said base material sheet. Install.

  A seventh invention of the present application is any one of the manufacturing methods from the first invention to the sixth invention, wherein the step b) is performed before the step a).

  The eighth invention of the present application is any one of the manufacturing methods from the first invention to the seventh invention, and in the step c), the folding margin is formed along a plurality of straight cutting lines parallel to each other. Disconnect.

  9th invention of this application is a diaper, Comprising: It consists of a laminated body containing a liquid-permeable top sheet, a liquid-impermeable back sheet, and the absorber interposed between the said top sheet and the said back sheet. A diaper body having a front abdomen, a back part, and a narrow crotch part connecting the front part and the back part, and a pair of fastenings with base ends fixed to both side edges of the back part A fastening main body including the base end, a tab extending outward in the width direction from the fastening main body, and an inner surface of the tab aligned in the width direction. A pair of fastening members arranged, and the tab includes a folding margin part that is folded outwardly and temporarily joined between the pair of fastening members.

  The tenth invention of the present application is the diaper of the ninth invention, wherein the tab is folded inward, and the fastening member is temporarily fastened to the inner surface of the fastening main body.

  The eleventh invention of the present application is the diaper of the ninth invention or the tenth invention, wherein the color of the tab is different from the color of the fastening member.

  According to the first to eighth inventions of the present application, since the cutting distance in the width direction of the base sheet is shortened, cutting defects in the width direction are suppressed. Moreover, if the length of the folding margin part in the width direction is changed, fastening tapes having different lengths can be manufactured with a common cutting device.

  In particular, according to the second invention of the present application, it is possible to prevent the tab from expanding in the step after step d). Further, in the step after step d), the fastening member can be prevented from being fastened at an unintended location.

  In particular, according to the third invention of the present application, the folding margin can be maintained in the folded state. Moreover, the bulk of the folding margin can be suppressed. For this reason, in step c), the substrate sheet can be more easily cut.

  In particular, according to the fourth invention of the present application, the folding margin can be maintained in the folded state. Moreover, the bulk of the folding margin can be suppressed. For this reason, in step c), the substrate sheet can be more easily cut.

  In particular, according to the fifth invention of the present application, the cutting distance in the width direction of the base sheet can be further shortened.

  In particular, according to the sixth invention of the present application, it is possible to easily confirm that the folding margin portion is folded and the position of the fastening member in the subsequent process.

  In particular, according to the seventh invention of the present application, in step b), the base sheet can be easily folded in a state in which the fastening member is not attached.

  In particular, according to the eighth invention of the present application, it is possible to prevent the tab outline from being uneven when the folding margin is developed.

  Further, according to the ninth to eleventh inventions of the present application, it is possible to suppress a cutting defect in the width direction when the fastening tape is manufactured. Further, the user can use the tab in a short state in which the folding margin is folded, and can also use the tab in a long state in which the folding margin is unfolded. In other words, the user can select the tab length according to the situation.

  In particular, according to the tenth aspect of the present invention, it is possible to prevent the fastening member from adhering to other parts before use.

  In particular, according to the eleventh aspect of the present invention, it is possible to easily confirm that the tab is folded and the position of the fastening member.

It is a perspective view of a disposable diaper. It is the top view which looked at the disposable diaper from the top sheet side. It is the top view which looked at the disposable diaper from the back seat side. It is sectional drawing of the disposable diaper seen from the IV-IV position in FIG. It is a perspective view of a fastening tape. It is a fragmentary sectional view of the fastening tape seen from the VI-VI position in FIG. It is the figure which showed a mode that four tabs were fixed to the target tape. It is the flowchart which showed the manufacturing procedure of the fastening tape. It is the figure which showed the mode at the time of manufacture of a fastening tape. It is the figure which showed the mode at the time of manufacture of a fastening tape. It is the figure which showed the mode at the time of manufacture of a fastening tape. It is the figure which showed the mode at the time of manufacture of a fastening tape. It is the figure which showed the mode at the time of manufacture of a fastening tape. It is the figure which showed the mode at the time of manufacture of a fastening tape. It is the figure which showed a mode that a folding margin part was temporarily joined by thermocompression bonding.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

<1. Disposable diaper structure>
<1-1. About the diaper body>
FIG. 1 is a perspective view of a disposable diaper 1 according to an embodiment of the present invention. FIG. 2 is a plan view of the disposable diaper 1 as viewed from the top sheet 10 side. FIG. 3 is a plan view of the disposable diaper 1 as viewed from the back sheet 20 side. FIG. 4 is a cross-sectional view of the disposable diaper 1 viewed from the position IV-IV in FIG. 2 and 3 show a state where a side seat elastic member 41, a waist elastic member 51, and a leg elastic member 52, which will be described later, are all extended.

  As shown in FIGS. 1 to 4, the disposable diaper 1 includes a liquid-permeable top sheet 10, a liquid-impermeable back sheet 20, and an absorber 30 interposed between both sheets 10 and 20. The diaper main-body part 2 which consists of a laminated body which has is provided. When the wearer of the disposable diaper 1 excretes body fluid such as urine, the body fluid passes through the top sheet 10 but does not pass through the back sheet 20 and is absorbed between the top sheet 10 and the back sheet 20. Absorbed and held by the body 30.

  The diaper main-body part 2 has the front part 2a addressed to a wearer's abdominal surface, the back part 2b addressed to a wearer's back surface, and the crotch part 2c which connects the front part 2a and the back part 2b. . Hereinafter, a direction in which the front abdominal part 2a, the crotch part 2c, and the back part 2b are connected is referred to as a “longitudinal direction”, and a direction perpendicular to the longitudinal direction and along the surface of the diaper main body 2 is referred to as a “width direction”. The diaper main body 2 extends in the longitudinal direction from the front abdominal part 2a to the back part 2b, and has a shape constricted in the width direction at the crotch part 2c located in the middle.

  The top sheet 10 is a liquid-permeable sheet disposed inside the absorbent body 30 (side closer to the wearer's skin). The top sheet 10 extends in a band shape from the front abdominal part 2a to the back part 2b, and the dimension in the width direction is smaller than the dimension in the width direction of the outer edge of the diaper body part 2. The top sheet 10 of the present embodiment is made of a nonwoven fabric that is made liquid permeable by treating the surface of hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, nylon, etc.) with a surfactant. The top sheet 10 may be composed of a nonwoven fabric using hydrophilic fibers (cellulose, rayon, cotton, etc.).

  The back sheet 20 is a liquid-impermeable sheet disposed on the outside of the absorber 30 (the side far from the wearer's skin). The backsheet 20 has substantially the same shape as the diaper main body 2 in plan view. That is, the back sheet 20 covers the entire outer surface of the diaper main body 2. The back sheet 20 of the present embodiment is made of a plastic film. In addition, the back sheet 20 may be comprised by the plastic film and the highly flexible nonwoven fabric affixed on the outer surface. The back sheet 20 may be made of a water-repellent nonwoven fabric using hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, nylon, etc.).

  The absorber 30 is a member having liquid absorbency and liquid retention. As shown in FIG. 4, the absorber 30 is fixed between the top sheet 10 and the back sheet 20 with an adhesive 91. The absorber 30 is, for example, a paper sheet such as tissue paper or a liquid-permeable material obtained by mixing a hydrophilic fiber such as pulverized pulp fiber or cellulose fiber and a granular superabsorbent polymer (SAP). It is coated with a non-woven sheet. The absorber 30 may be formed by molding only a superabsorbent polymer into a sheet shape.

  Inside the top sheet 10, a pair of side sheets 40 are provided for preventing leakage of body fluid to the side. The pair of side sheets 40 extends in the longitudinal direction so as to cover the left and right sides of the diaper main body 2. Each side sheet 40 is made of a water-repellent nonwoven fabric using hydrophobic fibers (polypropylene, polyethylene, etc.). As shown in FIG. 4, the pair of side sheets 40 is bonded to the inner side surface of another sheet via an adhesive 91 on the outer side in the width direction. The portion on the inner side in the width direction of the side sheet 40 is not attached to the inner side surface of the top sheet 10 and can rise with respect to the top sheet 10.

  A plurality of side sheet elastic members 41 extending in the longitudinal direction are provided on the side edge of the side sheet 40 on the inner side in the width direction. At the time of manufacturing the disposable diaper 1, the elastic member 41 for the side sheet is attached to the side sheet 40 in a state where the elastic member 41 is extended from the natural length. For this reason, the elastic member 41 for side sheets generates the elastic force which shrinks the side sheet 40 to a longitudinal direction. When the disposable diaper 1 is opened, the side edge of the side seat 40 on the inner side in the width direction rises due to the elastic force of the side seat elastic member 41. As a result, a pair of upstanding weirs is formed on the inner surface of the diaper main body 2.

  A plurality of waist elastic members 51 extending in the width direction are provided on the front abdomen 2a and the back part 2b. The waist elastic member 51 is fixed between the top sheet 10 and the back sheet 20 with an adhesive (not shown). At the time of manufacturing the disposable diaper 1, the waist elastic member 51 is attached to the front abdomen 2a and the back part 2b in a state of being extended more than the natural length. For this reason, the waist elastic member 51 generates an elastic force that contracts the front part 2a and the back part 2b in the width direction. When the wearer wears the disposable diaper 1, the front abdomen 2 a and the back part 2 b fit around the waist of the wearer due to the contraction force of the waist elastic member 51.

  Further, a plurality of leg-around elastic members 52 extending in the longitudinal direction are provided on both side edges in the width direction of the crotch portion 2c. The leg-around elastic member 52 is fixed between the side sheet 40 and the back sheet 20 with an adhesive (not shown). When the disposable diaper 1 is manufactured, the leg-hole elastic member 52 is attached to both side edges of the crotch portion 2c in a state where the elastic member 52 is extended beyond the natural length. For this reason, the leg-hole elastic member 52 generates an elastic force that contracts both side edges of the crotch 2c in the longitudinal direction. When the wearer wears the disposable diaper 1, both side edges of the crotch 2 c fit around the leg of the wearer due to the contraction force of the leg elastic member 52.

  In the present embodiment, a thread-like elastic member made of polyurethane is used for the side seat elastic member 41, the waist elastic member 51, and the leg elastic member 52. However, instead of the thread-like elastic member, a flat elastic member made of polyurethane, natural rubber or the like may be used.

  Moreover, as shown in FIG. 1 and FIG. 3, the target tape 60 is provided in the outer surface of the front abdominal part 2a of the diaper main-body part 2. As shown in FIG. The target tape 60 is fixed to the outer surface of the back sheet 20 with an adhesive (not shown). In the present embodiment, a loop material (female member) of a hook-and-loop fastener is used for the target tape 60. A fastening member 73 of a fastening tape 70 to be described later can be detachably fastened to the target tape 60.

<1-2. About Fastening Tape>
The disposable diaper 1 includes a pair of fastening tapes 70 on the left and right. Hereinafter, the fastening tape 70 is referred to as “fastening tape 70” when it is described without distinction between right and left. When the left and right fastening tapes 70 are described separately, the fastening tape 70 disposed on the wearer's right waist is referred to as “fastening tape 70R”, and the fastening tape disposed on the wearer's left waist is referred to as “fastening tape”. 70L ".

  The base end portion 70a of each fastening tape 70 is fixed to the left and right side edges of the back portion 2b. Specifically, as shown in FIG. 4, the base end portion 70 a of the fastening tape 70 is fixed between the side sheet 40 and the back sheet 20 via an adhesive 91.

  FIG. 5 is a perspective view of the fastening tape 70. The fastening tape 70 includes a fastening main body portion 71 and two tongue-like tabs 72 that extend outward from the end of the fastening main body portion 71 on the free end side in the width direction. The fastening main body 71 and the tab 72 are made of a nonwoven fabric such as polypropylene, for example. Two fastening members 73 are provided on the inner surface of each tab 72. As shown in FIG. 6, the fastening member 73 is fixed to the inner side surface of the tab 72 with an adhesive 92.

  In the present embodiment, a hook material (male member) of a hook-and-loop fastener is used for the fastening member 73. Each fastening member 73 can be detachably fastened to any position on the surface of the target tape 60 described above. Each fastening member 73 can also be detachably fastened to the nonwoven fabric constituting the fastening main body 71. However, the fastening force of the fastening member 73 to the fastening main body 71 is weaker than the fastening force of the fastening member 73 to the target tape 60.

  Like the fastening tape 70 </ b> R shown in FIGS. 1 to 4, the tab 72 before use is folded inward with the boundary line between the fastening main body 71 and the tab 72 as a fold. The fastening member 73 provided on each tab 72 is temporarily attached to the inner side surface of the fastening main body 71. For this reason, it is prevented that the fixing member 73 adheres to the position different from a desired position in the state before use.

  When using the disposable diaper 1, the fastening member 73 is peeled off from the fastening main body 71. And the tab 72 is expand | deployed outside like the fastening tape 70L of FIGS. 1-4, and the fastening tape 70 of FIG. On the inner surface of each tab 72, two fastening members 73 are arranged side by side in the width direction. Each tab 72 includes a folding margin 74 that is folded outward in the initial state between the pair of fastening members 73.

  FIG. 6 is a partial cross-sectional view of the fastening tape 70 as seen from the VI-VI position in FIG. In the initial state, four folds 72 a to 72 d are provided between the pair of fastening members 73. These folds 72a to 72d are respectively folded in a mountain, a valley, a valley, and a mountain, so that the folding margin 74 is folded in a bag shape.

  As shown in FIG. 6, in the vicinity of the outside of the folds 72 a, 72 d, the nonwoven fabrics constituting the folding margin 74 are temporarily joined via an adhesive 93. Further, in the vicinity of the inside of the folds 72 b and 72 c, the nonwoven fabric constituting the folding margin portion 74 and the nonwoven fabric constituting the other part of the tab 72 are temporarily joined via the adhesive 93.

  For this reason, the user of the disposable diaper 1 can use the tab 72 with the folding portion 74 folded. If the tab 72 is used in a state where the folding margin portion 74 is folded, it is possible to suppress the tab 72 from being shaken or entangled with each other. Therefore, the tab 72 can be handled relatively easily.

  On the other hand, the temporary bonding by the adhesive 93 is set to a bonding strength that can be released if the tip of the tab 72 is pulled with a certain force or more. For this reason, the user of the disposable diaper 1 can also use the tab 72 by expanding the folding margin 74. That is, the tab 72 of the present embodiment can be used by arbitrarily selecting a short state in which the folding margin portion 74 is folded and a long state in which the folding margin portion 74 is expanded.

  FIG. 7 is a view showing a state where the four tabs 72 in which the folding margins 74 are developed are fixed to the target tape 60. When the folding margin portion 74 is expanded, the distance between the pair of fastening members 73 is increased by the folding margin portion 74. Therefore, as shown in FIG. 7, the other tab 72 is overlaid on one tab 72 of each fastening tape 70, and the fastening member 73 of these tabs 72 is directly attached to the target tape 60. Can be made.

  In this way, if the two tabs 72 are crossed and fixed to the target tape 60, the wearer's waist and legs can be tightened more firmly. Therefore, a disposable diaper can be more reliably fixed with respect to a wearer.

  As in the present embodiment, it is preferable that the two fastening members 73 are arranged near the distal end and the proximal end of each tab 72, respectively. In this way, the folding margin 74 can be secured widely between the two fastening members 73. Further, in the state where the folding margin 74 is folded, it is preferable that the two fastening members 73 are arranged adjacent to each other through contact or a slight gap. For example, the interval between the two fastening members 73 is preferably 5 mm or less. By doing so, it is possible to increase the strip length of the tab 72 by the folding margin 74 (the difference in length between when stretched and when shortened).

  In addition, it is preferable to use a member of a color different from that of the tab 72 as the fastening member 73. By doing so, the position of the fastening member 73 can be easily confirmed visually. Moreover, since it becomes easy to notice that there exists fold 72a, 72d between a pair of fastening members 73, the user's understanding about the structure of the tab 72 can be encouraged.

<2. Manufacturing method of fastening tape>
Then, the manufacturing method of said fastening tape 70 is demonstrated, referring the flowchart of FIG. 8, and FIGS. 9-14.

  The manufacturing apparatus of the fastening tape 70 sequentially performs the process of each process with respect to the base material sheet 170, conveying the strip | belt-shaped base material sheet 170 like FIG. 9 to a longitudinal direction. Hereinafter, the surface that becomes the inner surface of the fastening tape 70 after manufacture is referred to as the “upper surface” of the base sheet 170, and the surface that becomes the outer surface of the fastening tape 70 after manufacture is referred to as the “lower surface” of the base sheet 170. .

  On the upper surface of the base sheet 170, a pair of fastening regions 173a for attaching the fastening member 173 is set. As shown in FIG. 9, the pair of fastening regions 173a are arranged at intervals in the width direction, and each extend in the longitudinal direction.

  When manufacturing the fastening tape 70, first, the temporary bonding adhesive 93 is applied to the folding margin 174 located between the pair of fastening regions 173a (step S1). The adhesive 93 is applied to at least a part of the upper surface, the lower surface, or both surfaces of the folding margin 174. Next, as shown in FIG. 10, the folding margin 174 of the base material sheet 170 is folded into a bag shape on the lower surface side (step S2). The pair of fastening regions 173a approach each other when the folding margin 174 is folded.

  At this time, the nonwoven fabrics constituting the folding margin part 174 or the folding margin part 174 and the other part of the base sheet 170 are temporarily joined by the adhesive 93. Thereby, the folding margin part 174 is maintained in the folded state. Moreover, the bulkiness of the folding margin part 174 is suppressed by temporary joining. For this reason, in the subsequent process, the base sheet 170 can be easily conveyed, and in step S4 described later, the base sheet 170 can be easily cut.

  In step S2, it is preferable to fold the folding margin portion 174 so that the pair of fastening regions 173a are arranged adjacent to each other through contact or a slight gap. For example, the interval between the two fastening regions 173a is preferably 5 mm or less. By doing so, the cutting distance w1 in the width direction of the base sheet 170 can be further shortened in step S5 described later.

  Subsequently, the adhesive 92 is applied to the upper surface of the fastening region 173a of the base sheet 170 (step S3). Then, as shown in FIG. 11, the pair of fastening members 173 are attached to the upper surfaces of the pair of fastening regions 173a through the adhesive 92, respectively (step S4).

  For the fixing member 173, it is preferable to use a member having a color different from that of the base sheet 170. By doing so, the position of the fastening member 173 can be easily visually confirmed. Therefore, it can be easily confirmed that the folding margin 174 is normally folded and the fastening member 173 is normally attached in the subsequent process.

  Subsequently, the base sheet 170 to which the fastening member 173 is attached is cut (step S5). Here, the base material sheet 170 is cut along a cutting line 170c extending in the longitudinal direction in a meandering manner while traversing the pair of fastening members 173. As a specific cutting method, for example, by rotating both rollers while sandwiching the substrate sheet 170 between a roller having a meandering blade corresponding to the cutting line 170c on the surface and another roller, The material sheet 170 may be cut.

  In this step S5, the base material sheet 170 is cut in a state where the folding margin 174 is folded. Thereby, the cutting distance w1 in the width direction of the cutting line 170c is shortened. If the cutting distance w1 in the width direction is shortened, cutting defects that are likely to occur when cutting in the width direction are suppressed. Therefore, it becomes possible to cut the base sheet 170 easily and reliably.

  By cutting in step S5, a plurality of tabs 72 are formed on the left and right of the cutting line 170c. The fastening members 173 fixed to the base sheet 170 are cut into a plurality of fastening members 73. Further, the folding margin 174 of the base sheet 170 is cut to become the folding margin 74 of each tab 72.

  As shown in FIG. 12, the cutting distance w1 in the width direction of the cutting line 170c is set to be longer than the width w2 in the width direction of the folded margin portion 174. In particular, in this embodiment, the cutting line 170c of the part which cut | disconnects the folding margin part 174 is a plurality of linear cutting lines parallel to each other. Thereby, when the folding margin part 74 after cutting | disconnection is expand | deployed, the unevenness | corrugation does not arise in the outline of the tab 72. FIG.

  Further, when the base sheet 170 is cut with the folding margin 174 folded as in the present embodiment, the tab when the folding margin 74 is unfolded by the width w2 of the folding margin 174 in the width direction. The length of 72 changes. Therefore, if the length w2 in the width direction of the folding margin 174 is changed, the tabs 72 having different lengths after deployment can be cut with a common cutting device.

  Subsequently, as shown in FIG. 13, the tab 72 to which the fixing member 73 is attached is folded back to the upper surface side, and the fixing member 73 is temporarily fixed on the upper surface of the base material sheet 170 located on the outer side in the width direction from the tab 72. (Step S6). This prevents the tab 72 from expanding or the fastening member 73 from being stuck to an unintended location in the subsequent process.

  The tab 72 is folded back in a short state where the folding margin 74 is folded. For this reason, the folding operation is easier than the state in which the folding margin 74 is unfolded. Further, an area to be secured for temporarily fixing the fixing member 73 to the outer side in the width direction from the tab 72 can be narrowed.

  Then, as shown in FIG. 14, the base material sheet 170 located on the outer side in the width direction from the tab 72 is cut for each fastening main body 71 (step S7). Thereby, a plurality of fastening tapes 70 are obtained.

<3. Modification>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

  The order in which the above steps S1 to S2 and steps S3 to S4 are executed may be interchanged. That is, after attaching the fastening member 173 to the fastening region 173a of the base sheet 170, the folding margin 174 may be folded to the lower surface side. However, before the fastening member 173 is attached, the folding margin 174 can be folded without being restricted by the fastening member 173. Therefore, in terms of ease of folding work, it is preferable to execute steps S1 to S2 before steps S3 to S4.

  In the above embodiment, the folding margins 74 and 174 are temporarily joined using the adhesive 93, but the folding margins 74 and 174 may be provisionally joined by other means. For example, the above step S1 may be omitted, and the folding margin 174 may be temporarily joined by thermocompression bonding such as pin embossing after the folding margin 174 is folded in step S2. Specifically, as shown in FIG. 15, by applying heat T and pressure P to the folding margin 174 from the lower surface side of the folding margin 174, the nonwoven fabrics constituting the folding margin 174, or the folding margin 174 And the other part of the base sheet 170 may be partially temporarily joined.

  Further, in the above embodiment, the loop material and the hook material of the hook-and-loop fastener are used for the target tape 60 and the fastening member 73, respectively, but other materials are used as long as they can be detachably fastened to each other. May be. For example, an adhesive material may be used for one or both of the target tape 60 and the fastening member 73. Alternatively, the fastening member 73 may be fastened to the outer surface of the back sheet 20 constituting the front abdomen 2a without providing the target tape 60.

  Moreover, the diaper of the present invention may be intended for an adult or may be intended for an infant.

  Moreover, you may combine suitably each element which appears in said embodiment and modification in the range which does not produce inconsistency.

DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Diaper main-body part 2a Front part 2b Back part 2c Crotch part 10 Top sheet 20 Back sheet 30 Absorbent body 40 Side sheet 60 Target tape 70 Fastening tape 71 Fastening main-body part 72 Tab 73 Fastening member 74 Folding margin part 91, 92,93 Adhesive 170 Base material sheet 170c Cutting line 173 Fastening member 173a Fastening region 174 Folding margin

Claims (11)

A method for producing a fastening tape used for a diaper,
a) attaching a pair of fastening members to the pair of fastening regions set on the upper surface of the belt-shaped base sheet; and
b) before or after the step a), folding the folding margin located between the pair of fastening regions of the base sheet to the lower surface side so as to make the pair of fastening regions approach. ,
c) After the steps a) and b), cutting the base sheet in a meandering manner while traversing the pair of fastening members;
A manufacturing method comprising: The manufacturing method according to claim 1,
d) After the step c), the tongue-like tab to which the fastening member is attached is folded back, and the fastening member is temporarily fastened on the upper surface of the base sheet positioned outside in the width direction. The manufacturing method which further has a process to make. The manufacturing method according to claim 1 or 2,
e) before the step b), further comprising a step of applying an adhesive to at least a part of the folding margin of the base sheet;
In the step b), the folding margin portions or the folding margin portions and the other part of the base sheet are temporarily joined by the adhesive. The manufacturing method according to claim 1 or 2,
f) A step of temporarily joining the folding margin portions or the folding margin portions and the other portion of the base sheet partly by thermocompression bonding between the step b) and the step c). Manufacturing method having. A manufacturing method according to any one of claims 1 to 4, wherein
In the step b), the pair of fastening regions are disposed adjacent to each other through contact or a slight gap. A manufacturing method according to any one of claims 1 to 5,
In the step a), a manufacturing method for attaching a fastening member having a color different from that of the base sheet to the base sheet. It is a manufacturing method in any one of Claim 1 to 6, Comprising:
The manufacturing method which performs the said process b) before the said process a). A manufacturing method according to any one of claims 1 to 7,
In the step c), the folding margin portion is cut along a plurality of linear cutting lines parallel to each other. It consists of a laminated body including a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber interposed between the top sheet and the back sheet, a front abdomen, a back part, and the front abdomen A narrow crotch portion connecting the back portion, and a diaper main body portion,
A pair of fastening tapes having base ends fixed to both side edges of the back portion;
With
The fastening tape is
Fastening body including the proximal end,
A tab extending outward in the width direction from the fastening main body,
A pair of fastening members arranged side by side in the width direction on the inner surface of the tab;
Have
The tab is a diaper having a folding margin part that is folded outward and temporarily joined between the pair of fastening members. A diaper according to claim 9, wherein
A diaper in which the tab is folded inward and the fastening member is temporarily fastened to the inner surface of the fastening body. A diaper according to claim 9 or claim 10, wherein
A diaper in which the color of the tab is different from the color of the fastening member.

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