JP5369311B2 - Fastening tape, method of manufacturing fastening tape, and tape-type disposable diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening tape which can easily and sufficiently secure the adhesive strength of a hook material. <P>SOLUTION: The fastening tape 10a comprises a base material sheet 11a made of a nonwoven fabric, a sheet loop material 12 having a loop material adhesion surface 12a and sticking a part of the loop material adhesion surface 12a to one surface of the base material sheet 11a, and a hook material 13 having a hook material adhesion surface 13a and sticking the hook material adhesion surface 13a to the part (deficient portion 15) of the loop material adhesion surface 12a of the loop material 12 to which the base material sheet 11a is not stuck. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a fastening tape, a method for producing a fastening tape, and a tape-type disposable diaper, and more particularly, a fastening tape capable of easily and sufficiently securing the adhesive strength of a hook material, and a method for producing the fastening tape. And a tape-type disposable diaper.

  In general, a tape-type disposable diaper is composed of a front body, a crotch part, and a back body, a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between these two sheets. And a fastening tape that is arranged so as to extend from the left and right side edges of the back body and for fixing the front body and the back body. And structure which holds excrement excreted at the time of wear on an absorber via a liquid-permeable top sheet, and prevents liquid from leaking out of a diaper with a liquid-impermeable back sheet It has become.

  As such a tape-type disposable diaper, for example, a tape-type disposable diaper having a fastening tape 110 as shown in FIG. 11 is known in order to improve the fit around the wearer's leg (for example, Patent Documents 1 and 2). The fastening tape 110 includes a base material sheet 111 made of a nonwoven fabric, a hook material 113 on one surface of the base material sheet 111, and a loop material 112 on the other surface of the base material sheet 111. It is. When such a fastening tape is used, since another fastening tape can be stacked and fixed on the one fastening tape, the diaper can be fitted to the wearer.

Japanese Patent No. 4024782 Japanese Patent No. 4066806

  The tape-type disposable diapers described in Patent Documents 1 and 2 are excellent in wearability and fit even when worn by wearers with different body shapes, and in particular, can effectively prevent leakage from around the legs. it can. However, when non-woven fabric is used as the base material sheet of the fastening tape, the surface of the base material sheet has many irregularities, so that the adhesive area between the base material sheet and the hook material cannot be obtained sufficiently, and the adhesive strength of the hook material There was a problem that could not be obtained sufficiently. In order to solve such a problem, not only the hook material is bonded to the base sheet, but in addition, the hook material is heat sealed to the base sheet to reinforce the adhesive strength.

  However, the fastening tape having the structure in which the hook material is heat-sealed to the base sheet as described above has a problem that not only labor is required for production but also a large facility for heat-sealing is required. .

  The present invention has been made in view of such problems of the prior art, and is a fastening tape capable of easily and sufficiently ensuring the adhesive strength of the hook material, a method for manufacturing the fastening tape, and the above-described fastening. A tape-type disposable diaper using a wearing tape is provided.

  According to the present invention, there are provided a fastening tape, a method for producing the fastening tape, and a tape-type disposable diaper described below.

[1] A base sheet made of non-woven fabric, a loop material film, and a loop disposed on one surface of the loop material film, the opposite side of the surface of the loop material film on which the loop is disposed A sheet-like loop material having a loop material adhesion surface, which is a flat surface, and a part of the loop material adhesion surface bonded to one surface of the base sheet; a hook material film; and A hook material adhesive surface, which is a flat surface, is provided on a surface opposite to the surface on which the plurality of protrusions of the hook material film are formed. And a hook material in which the hook material adhesion surface is adhered to a portion of the loop material adhesion surface of the loop material to which the base sheet is not adhered.

[2] the base sheet is a rectangular shape of the nonwoven fabric, at one end side portion of its longitudinal, which has moved away and divided along the widthwise direction, the base sheet is The fastening tape according to [1], wherein the hook material bonding surface is bonded to the loop material bonding surface in a separated portion.

[3] The stop according to [1] or [2], wherein a ratio of an adhesion area between the hook material adhesion surface and the loop material adhesion surface to a total area of the hook material adhesion surface is 50 to 100%. Attached tape.

[4] The fastening tape according to any one of [1] to [3], wherein an adhesive strength between the base sheet and the loop member is different from an adhesive strength between the hook member and the loop member.

[ 5 ] The hook material adhesion portion to which the hook material adhesion surface of the loop material is adhered is colored, and the portions other than the hook material adhesion portion are colored in a color different from the hook material adhesion portion. The fastening tape according to any one of [1] to [ 4 ].

[ 6 ] A loop material film and a loop disposed on one surface of the loop material film, the surface of the loop material film being a flat surface opposite to the surface on which the loop is disposed. A first step of obtaining a first long intermediate sheet by bonding a long base sheet made of a nonwoven fabric to a part of the loop material bonding surface of a sheet-like long loop material having a loop material bonding surface And a hook material film and the hook on the base material sheet non-adhered portion of the loop material adhesion surface of the long loop material of the first long intermediate sheet to which the long base material sheet is not adhered. A plurality of protrusions formed on one surface of the material film, and a hook material adhesion surface which is a flat surface on the surface opposite to the surface on which the plurality of protrusions of the hook material film are formed. The hook material contact of the long hook material sheet A second step of obtaining a second long intermediate sheet by bonding the surfaces, and a third step of obtaining a plurality of fastening tapes by cutting the second long intermediate sheet into a predetermined size; The manufacturing method of the fastening tape provided with.

[ 7 ] In the first step, a first adhesive is applied to the loop material adhesion surface, and then the long base sheet is adhered to the loop material adhesion surface to the first adhesion. adhered by adhesive, in the second step, the base sheet unbonded portion, according to the hook member adhesive surface of the long hook material sheet to [6] to adhere by the first adhesive Manufacturing method of fastening tape.

[ 8 ] In the first step, one long base sheet is bonded to a first region including one end of the long loop member in the short direction of the loop member bonding surface. In addition, another long base sheet is bonded to a second region including the other end, and in the second step, the first region and the second of the loop material bonding surface The manufacturing method of the fastening tape according to [ 6 ] or [ 7 ], wherein the hook material adhesion surface of the long hook material sheet is adhered to a third region between the region and the region.

[ 9 ] In the second step, the long hook material sheet in which a second adhesive is applied in advance to the hook material bonding surface is prepared, and the hook material bonding surface is formed on the first region. The said long base material sheet | seat adhere | attached on, the said 3rd area | region of the said loop material adhesion surface, and the fixation of said [ 8 ] adhere | attached on the said long base material sheet | seat adhere | attached on said 2nd area | region. Tape manufacturing method.

[ 10 ] In the third step, the second elongate intermediate sheet is divided into the first region, the third region, the second region, the third region, and the first region. Cut along an S-curve-shaped cutting trajectory that sequentially passes, and obtain two fastening tape intermediates having S-curved side edges on one side and linear side edges on the other side, Each of the obtained fastening tape intermediates is a step of separating a valley portion of the S-curved side edge and the straight side edge to obtain a plurality of the fastening tapes. [ 8 ] or the method for producing a fastening tape according to [ 9 ].

[ 11 ] Consists of each part of the front body, the crotch part and the back body, and is arranged so as to cover the surface of the absorber, and at least a part of the top sheet made of a liquid-permeable material, A back sheet made of a liquid-impermeable material, and arranged to extend from the left and right side edges of the back body, the front body and the back body; A tape-type disposable diaper comprising: the fastening tape according to any one of [1] to [ 5 ].

  The fastening tape of the present invention has an effect that the adhesive strength of the hook material can be secured easily and sufficiently.

  The method for producing a fastening tape of the present invention produces an effect that a fastening tape in which the adhesive strength of the hook material is simply and sufficiently secured can be produced.

  The tape-type disposable diaper of the present invention has an effect that the adhesive strength of the hook material of the fastening tape is simply and sufficiently secured.

It is a top view which shows one Embodiment of the fastening tape of this invention. It is sectional drawing which shows the A-A 'cross section of FIG. It is a top view which shows one Embodiment of the base material sheet of the fastening tape of this invention. It is sectional drawing which shows another embodiment of the fastening tape of this invention. It is a perspective view explaining the manufacturing process of one Embodiment of the manufacturing method of the fastening tape of this invention. It is a top view in the manufacturing process of FIG. It is a schematic diagram explaining the manufacturing process of one Embodiment of the manufacturing method of the fastening tape of this invention. It is a schematic diagram explaining the manufacturing process of one Embodiment of the manufacturing method of the fastening tape of this invention. It is a top view showing one embodiment of a tape type disposable diaper of the present invention. It is a perspective view which shows the use condition of the tape-type disposable diaper shown in FIG. It is sectional drawing which shows the conventional fastening tape.

  Hereinafter, although the form for implementing this invention is demonstrated, this invention is not limited to the following embodiment. That is, it is understood that modifications and improvements as appropriate to the following embodiments are also within the scope of the present invention based on ordinary knowledge of those skilled in the art without departing from the spirit of the present invention. Should be.

[1] Fastening tape:
FIG. 1 is a plan view showing a fastening tape 10a which is an embodiment of the fastening tape of the present invention, and FIG. 2 is a cross-sectional view showing the AA ′ cross section of FIG. The fastening tape of the present invention has a base material sheet 11a made of a non-woven fabric and a loop material adhesion surface 12a as in the fastening tape 10a shown in FIG. 2, and loop material adhesion to one surface of the base material sheet 11a. A hook material is formed on a portion of the loop material bonding surface 12a of the loop material 12 that is not bonded to the base material sheet 11a, and has a sheet-like loop material 12 to which a part of the surface 12a is bonded and a hook material bonding surface 13a. And a hook member 13 to which the bonding surface 13a is bonded. In such a fastening tape, the adhesive strength of the hook material is easily and sufficiently secured, and the hook material is difficult to peel off. In FIG. 1 to FIG. 10, common constituent elements are denoted by the same reference numerals.

  The fastening tape of the present invention can be suitably used as a fastening tape for a tape-type disposable diaper regardless of whether it is for infants or adults, but is preferably used for a tape-type disposable diaper for adults. It is. This is because the tape-type disposable diaper for adults is often used repeatedly for a long time, so that the hook material tends to be peeled more easily than the diaper for infants.

  Moreover, in order to obtain the advantage that the tape type disposable diaper for adults can adjust the tape position and the tightening degree appropriately according to the wearer's body shape, specifically, the waist circumference and leg circumference dimensions, Two fastening tapes are arranged on each side edge. When two fastening tapes are arranged in this way, there are advantages as described above. However, at this time, one fastening tape is often placed so as to overlap another fastening tape. Therefore, as a tape-type disposable diaper for adults, a fastening tape in which a hook material is disposed on one surface and a loop material is disposed on the other surface is often used.

[1-1] Substrate sheet:
The base sheet is made of non-woven fabric, specifically, spunbond, SMS (spunbond / meltblown / spunbond), SMMS (spunbond / meltblown / meltblown / spunbond), card embossing, resin bond, etc. Those made of various non-woven fabrics can be used. In addition, it is preferable to use a spunbonded nonwoven fabric from the viewpoint that good tensile strength can be obtained.

  Examples of the constituent material of the nonwoven fabric include synthetic fibers made of polyolefin (polyethylene, polypropylene, etc.), polyester, aliphatic polyamide (nylon (registered trademark)), and other thermoplastic resins. In this case, the synthetic fiber may be a single fiber or a composite fiber having a core-sheath structure or the like. In general, when a single fiber is used, a large amount of polyolefin is used. From the viewpoint of obtaining good tensile strength, it is also preferable to use polyester. Moreover, the laminated body which laminated | stacked the some nonwoven fabric and the laminated body which laminated | stacked the nonwoven fabric and the film can also be used as a base material sheet.

  Depending on whether the base sheet is a fastening tape used for diapers for infants or a fastening tape used for diapers for adults, the shape can be appropriately selected as necessary, for example, A rectangular shape or an elliptical shape can be used. Here, the “rectangular shape” in this specification is a concept including a rectangle and a shape in which a central portion of one end portion of the rectangle in the longitudinal direction protrudes outward in the longitudinal direction. As a shape in which the central portion of one end portion in the longitudinal direction of the rectangular shape protrudes outward in the longitudinal direction, for example, the shape of the fastening tape 10a shown in FIG. 1 can be exemplified.

  Further, the base sheet may have a missing part formed in a part thereof. And as one of the preferable aspects of a base material sheet, the thing which the hook material adhesion surface of a hook material has adhere | attached on the loop material adhesion surface of a loop material in this missing part can be mentioned. Examples of the shape of the missing portion include a rectangle and a circle. Note that a plurality of missing portions having the above shape may be formed on the base sheet. As a base material sheet in which the missing portion is formed, for example, a base material sheet 11b shown in FIG. 3 can be exemplified. The base sheet 11b has a rectangular missing portion 15 formed at one end in the longitudinal direction. Thus, if a missing part is formed and the hook material adhesion surface of the hook material and the loop material adhesion surface of the loop material are adhered at the missing part, the adhesive strength of the hook material can be ensured easily and sufficiently.

  Moreover, as a missing part, what was formed by notching a part of base material sheet, what was formed by dividing | segmenting a base material sheet, etc. can be mentioned. That is, as the base sheet, a rectangular non-woven fabric can be used which is divided and separated along the short direction at one end side in the longitudinal direction. Among these, as the fastening tape of the present invention, it is preferable that the hook material adhesion surface is bonded to the loop material adhesion surface in the portion where the base sheet is separated. Further, the hook material is arranged so as to cover the part (the missing part) where the base material sheet is separated, the hook material is arranged on one surface side of the base material sheet, and the loop material is arranged on the other surface side. It is preferable that the hook material adhesion surface and the loop material adhesion surface are directly bonded to each other at a portion (missing portion) where the base material sheet is separated. Furthermore, it is preferable that one end portion of the hook material is bonded to one spaced apart base sheet, and the other end portion is bonded to another spaced apart base sheet. Such a fastening tape has the advantage that it is easy to manufacture.

  For example, the fastening tape 10a shown in FIG. 1 is a base sheet 11a obtained by dividing and separating a substantially rectangular nonwoven fabric along the short direction at a portion on one end side in the longitudinal direction, The hook material 13 disposed on one surface side of the base sheet 10a and the loop material (see FIG. 2) disposed on the other surface side of the base sheet 10a, the portion where the base sheet 11a is separated ( This is an example in which the hook material bonding surface of the hook material 13 is bonded to the loop material bonding surface of the loop material at the missing portion 15).

  In this way, when a base sheet that is divided and separated from a predetermined portion is used, the material (base sheet) of the separated portion is reduced as compared with the conventional base sheet 111 as shown in FIG. Therefore, there is an advantage that the cost of the fastening tape can be reduced.

[1-2] Loop material:
The loop material has a loop material bonding surface, and is a sheet-like material in which a part of the loop material bonding surface is bonded to one surface of the base sheet. Since such a loop member can be engaged with a hook member of another fastening tape, a diaper can be attached in accordance with the wearer's body shape. The loop material bonding surface is a flat surface.

  The loop material preferably includes a film and a loop disposed on one surface of the film, and preferably has a loop material bonding surface on a surface opposite to the surface on which the loop is disposed. More specifically, it is possible to use a film comprising a film made of a synthetic resin and the like, and loop-like fibers arranged on one surface of the film (the surface opposite to the loop material bonding surface). . For example, the fastening tape 10a shown in FIG. 2 includes a loop material film 25, and loop-like fibers (loops) 27 disposed on the surface opposite to the loop material adhesion surface 12a of the loop material film 25; It is the example provided with the loop material 12 which has.

  Examples of the film include polyolefin (polyethylene, polypropylene, etc.), polyester, aliphatic polyamide (nylon (registered trademark)), and other thermoplastic resin films.

  The hook material bonding portion (for example, the portion corresponding to the missing portion 15 in FIG. 2) to which the hook material bonding surface is bonded is colored, and the portions other than the hook material bonding portion are bonded to the hook material. It is preferable that the portion is colored in a different color. With such a configuration, the position of the hook material can be recognized when viewed from the loop material side, and even when viewed from the hook material side, the difference in color of the loop material can be visually recognized through the hook material. Therefore, the position of the hook material can be recognized. In this way, the position of the hook material can be reliably recognized regardless of which side is viewed. Therefore, there exists an advantage that workability | operativity at the time of diaper wear improves.

  As a method of adhering the loop material to the base sheet, a conventionally known method can be appropriately adopted. For example, a method using an adhesive such as a hot melt adhesive can be preferably adopted.

[1-3] Hook material:
The hook material has a hook material bonding surface, and the hook material bonding surface is bonded to a portion of the loop material bonding surface of the loop material to which the base material sheet is not bonded. It is a flat surface. The hook material can be a film made of a synthetic resin or the like, a sheet-like material provided with a number of protrusions formed on one surface of the film (the surface opposite to the hook material bonding surface), and the like. Examples of the many protrusions include protrusions such as a bowl shape, a mushroom shape, and a bowl shape. As the hook material, specifically, a convex member of a mechanical fastener (also referred to as a planar fastener) can be used.

  For example, the fastening tape 10a shown in FIG. 2 includes a hook material film 28 and a number of protrusions (hooks) 29 arranged on the surface opposite to the hook material bonding surface 13a of the hook material film 28. It is an example provided with the hook material 13 which has.

  Since such a hook material can also be engaged with a loop material of other fastening tape, a diaper can be attached in accordance with the wearer's body shape. That is, the fastening tape is fixed by mechanically coupling the hook material of one fastening tape and the loop material of the other fastening tape (by engaging a number of protrusions of the hook material with the loop-like fibers of the loop material). It can be fixed at a desired position.

  For example, polyolefin (polyethylene, polypropylene, etc.), polyester, aliphatic polyamide (nylon (registered trademark)), or other synthetic fibers made of thermoplastic resin may be used as the material for the hook material (the film and the many protrusions). Can do. In particular, polyethylene and polypropylene can be preferably used. The material for the film and the protrusion may be the same or different.

  The hook material only needs to be bonded to the loop material bonding surface of the loop material, but at least a part of the hook material bonding surface is preferably bonded at the following ratio. That is, the ratio of the bonding area between the hook material bonding surface and the loop material bonding surface to the total area of the hook material bonding surface is preferably 50 to 100%, and more preferably 50 to 97%. When the ratio is less than 50%, the bonding area between the hook material bonding surface and the loop material bonding surface is reduced, and thus there is a possibility that the bonding strength of the hook material cannot be sufficiently secured. In addition, since the base material sheet and the hook material can be overlapped when the ratio is 97% or less, there is an advantage that the tensile strength can be further improved.

  FIG. 4 shows an example of the fastening tape 10 b in which the entire hook material bonding surface 13 a of the hook material 13 is bonded to the loop material bonding surface 12 a of the loop material 12.

  The hook material is preferably printed with desired characters, figures, symbols and the like on the hook material bonding surface. If it does in this way, since the position of a hook material can be recognized through a loop material, the said character etc. can be used as a mark. Therefore, there exists an advantage that workability | operativity at the time of diaper wear improves.

  As a method of adhering the hook material to the loop material, a conventionally known method can be appropriately employed. For example, a method using an adhesive such as a hot-melt adhesive can be preferably employed.

  In the fastening tape of the present invention, the hook material bonding surface of the hook material and the one surface of the base sheet are directly bonded to the loop material bonding surface of the loop material, respectively. In the case of using a hot melt adhesive, the hot melt adhesive that bonds the hook material adhesive surface to the loop material adhesive surface loops one side of the base sheet. It is preferable to vary the coating amount and type of the hot melt adhesive that adheres to the material adhesion surface. That is, the adhesive strength between the base material sheet and the loop material is preferably different from the adhesive strength between the hook material and the loop material, and the adhesive strength between the hook material and the loop material is compared with the adhesive strength between the base material sheet and the loop material. It is more preferable to make it larger. The hot melt adhesive may have the same coating amount and type.

[2] Manufacturing method of fastening tape:
The manufacturing method of the fastening tape of the present invention is characterized in that a long base sheet made of a nonwoven fabric is bonded to a part of a loop material adhesion surface of a sheet-like long loop material having a loop material adhesion surface, The first step of obtaining the long intermediate sheet, and the hook on the non-adhesive portion of the base material sheet to which the long base material sheet is bonded, on the loop material bonding surface of the long loop material of the first long intermediate sheet The second step of obtaining the second long intermediate sheet by bonding the hook material bonding surface of the long hook material sheet having the material bonding surface, and separating the second long intermediate sheet into a predetermined size And a third step of obtaining a plurality of fastening tapes. According to such a manufacturing method, it is possible to manufacture a fastening tape in which the adhesive strength of the hook material is simply and sufficiently secured.

[2-1] First step:
In the manufacturing method of the fastening tape of the present invention, first, a long base sheet made of a non-woven fabric is bonded to a part of the loop material bonding surface of a sheet-like long loop material having a loop material bonding surface. A first step of obtaining one long intermediate sheet is performed. In this step, one long base sheet is bonded to the first region including one end of the long loop material in the short direction of the loop material bonding surface, and the other end is It is preferable that another long base sheet is adhered to the second region to be included to obtain the first long intermediate sheet. Such a process is advantageous in that waste such as trim (waste) is less likely to occur during the manufacturing process.

  As the long loop material, for example, a sheet-like material including a belt-like film and loop-like fibers (loops) arranged on the entire one surface of the film can be used. As said film, the thing similar to the film for loop materials mentioned above can be used.

  The long base sheet is made of a non-woven fabric as described above, and the same non-woven fabric as the above-described base sheet can be used.

  The method of adhering the long loop material and the long base material sheet can employ the same method as the method of adhering the loop material to the base material sheet described above. It is preferable that the first adhesive is applied, and then the long base sheet is bonded to a part of the loop material bonding surface with the first adhesive. Further, the first adhesive is applied to the entire surface of the loop material bonding surface, and then, in the loop material bonding surface, the first region including one end of the long loop material in the short direction is applied to the first region. Along with the first adhesive, the other long base sheet is bonded to the second region including the other end via the first adhesive. Thus, it is preferable to obtain the first long intermediate sheet. That is, it is preferable that the two long base sheets are bonded to both sides (both ends in the short direction) of the loop material bonding surface of the long loop material via the first adhesive.

  And, as will be described later, the hook material adhesion surface of the long hook material sheet is adhered to the third region between the first region and the second region via the first adhesive. Is preferred. Thus, in production, it is preferable to apply an adhesive (first adhesive) to the long loop material, and the effect thereof is that productivity is improved. That is, there is an advantage that trouble in manufacturing is less likely to occur.

  In addition, as a 1st adhesive agent, adhesive agents, such as the hot-melt-adhesive mentioned above, can be mentioned. The first adhesive applied to the entire loop material bonding surface can be used alone or in combination of two or more.

[2-2] Second step:
Next, the long hook material having the hook material bonding surface on the base material sheet non-bonded portion of the loop material bonding surface of the long loop material of the first long intermediate sheet to which the long base material sheet is not bonded A second step of obtaining a second long intermediate sheet by bonding the hook material bonding surface of the sheet is performed. In this step, it is preferable that the hook material bonding surface of the long hook material sheet is bonded to the third region between the first region and the second region of the loop material bonding surface.

  As the long hook material sheet, for example, a sheet provided with a belt-like film and a plurality of protrusions (hooks) arranged on one surface of the film can be used. As said film, the thing similar to the film for hook materials mentioned above can be used. In the case where a strip-shaped material is used as the long hook material sheet, the width of the long hook material sheet may be narrower or wider than the width of the third region.

  The method of adhering the long hook material sheet to the first long intermediate sheet can employ the same method as the method of adhering the hook material to the loop material. Further, it is preferable that the hook material bonding surface of the long hook material sheet is bonded with the first adhesive. Further, as described above, in the third region between the first region and the second region of the loop material bonding surface, the hook material bonding surface of the long hook material sheet is connected to the loop material bonding surface. It is preferable to adhere with the first adhesive applied to the surface.

  In this step, it is preferable to use a long hook material sheet coated with a second adhesive in advance on the hook material adhesion surface, and this hook material adhesion surface is adhered to the first region. It is preferable to adhere to the long base sheet, the third region of the loop material bonding surface, and the long base sheet bonded to the second region. That is, the hook material is preferably bonded to each of the separated base material sheets other than the loop material. In this case, the fastening tape to be manufactured has a tensile strength in a direction in which the base material sheet is separated (X direction shown in FIG. 2) because the hook material is bonded to both of the separated base material sheets. There is an advantage of improvement.

  The second adhesive may include an adhesive such as the above-described hot melt adhesive, and the second adhesive may be the same as or different from the first adhesive described above. It may be a thing.

  FIG. 5 is a perspective view showing the second long intermediate sheet 70 obtained in the second step. FIG. 6 is a plan view of the second long intermediate sheet 70 shown in FIG. 5 as viewed from the long hook material sheet 71 side. The second long intermediate sheet 70 is obtained as follows. First, a hot melt adhesive (first adhesive) is applied to the entire surface of the loop material bonding surface of the strip-shaped long loop material 72, and then one end of the loop material bonding surface in the short direction thereof. One long substrate sheet 73a is bonded to the first region 51 including the portion by the hot melt adhesive, and another long substrate sheet 73b is bonded to the second region 52 including the other end portion. Are bonded by the hot melt adhesive to obtain a first long intermediate sheet. Next, a long hook material sheet 71 in which a hot melt adhesive (second adhesive) is previously applied to the hook material adhesive surface 71 a is prepared, and the hook material adhesive surface 71 a of the long hook material sheet 71 is prepared. Adhering to the long base sheet 73a, the third region 53 between the first region 51 and the second region 52, and the long base sheet 73b by the hot melt adhesive, An intermediate sheet 70 can be obtained.

  As described above, it is preferable to use a hook material coated with a second adhesive in advance on the hook material bonding surface, but the second adhesive is applied to the hook material bonding surface in the production line. You may make it work.

  In addition, as a method for adhering the long hook material sheet to the first long intermediate sheet, in a production line using a hot melt adhesive, the hot melt adhesive is applied to the third region of the long loop material. It can also be crafted. Thus, when apply | coating to a 3rd area | region, even if a 1st elongate intermediate sheet may meander during application | coating, there exists an advantage that a hot-melt adhesive agent does not protrude easily. That is, it is possible to avoid problems caused by the hot melt adhesive protruding.

  Furthermore, when the hook material is bonded, in addition to the bonding method using the second adhesive, a crimping process such as heat sealing can be performed. Thus, when crimping is performed, there is an advantage that the adhesive strength of the hook material can be effectively increased.

  The adhesive used for the first region and the second region (first adhesive) is the same as the adhesive used for the third region (first adhesive, second adhesive). It is preferable to vary the coating amount and type. That is, the coating amount and type are different so that the adhesive strength at the bonding site between the long loop material and the long hook material sheet is different from the bonding strength at the bonding site between the long loop material and the long hook material sheet. It is preferable to apply the adhesive. For example, when the adhesive (first adhesive) is applied to the entire loop material adhesive surface, the amount of adhesive applied is determined by the adhesive part with the hook material and the adhesive part with the base sheet. Can be changed.

[2-3] Third step:
Next, the third step of obtaining a plurality of fastening tapes by cutting the second long intermediate sheet into a predetermined size is performed. In this step, the method for separating the second long intermediate sheet is not particularly limited, but it is preferably performed as follows. That is, the second long intermediate sheet is cut along an S-curved cutting locus that sequentially passes through the first region, the third region, the second region, the third region, and the first region. Then, two fastening tape intermediates having S-curved side edges on one side and linear side edges on the other side were obtained, and each of the obtained fastening tape intermediates was It is preferable to cut off between the valley portion of the curved side edge and the straight side edge. When a plurality of fastening tapes are obtained in this way, trim (waste) is less likely to occur during the manufacturing process, and the manufacturing cost can be reduced.

  FIG. 7 shows that the second long intermediate sheet 70 is sequentially passed through the first region 51, the third region 53, the second region 52, the third region 53, and the first region 51. The example cut | disconnected by the cutting locus | trajectory S of the character curve shape is shown. When the second long intermediate sheet 70 is cut in this way, for example, as shown in FIG. 8, a fastening tape having an S-curved side edge on one side and a straight side edge on the other side. Two intermediate bodies 74 can be obtained.

  FIG. 8 shows an example in which the fastening tape intermediate 74 is cut between the S-curved side edge trough 74a and the straight side edge 74b. In this way, a plurality of fastening tapes 10a can be obtained.

[3] Tape-type disposable diapers:
One embodiment of the tape-type disposable diaper of the present invention is composed of the front body 2, the crotch part 4 and the back body 6 as in the tape-type disposable diaper 100 shown in FIG. A top sheet 18 partially made of a liquid-permeable material, a back sheet 20 made of a liquid-impermeable material, and the left and right side edges 6 a and 6 b of the back body 6 are arranged so as to extend from the back body 6. And a fastening tape 10a capable of fixing the front body 2 to each other. The fastening tape 10a is the fastening tape of the present invention, and the hook material 13 is disposed on one surface side, and the loop material 12 is disposed on the other surface side. Such a tape-type disposable diaper is provided with a fastening tape that improves the adhesive strength of the hook material and is difficult to peel off.

  Further, in the tape-type disposable diaper 100 shown in FIG. 9, a front patch 17 is disposed on the front body 2, and as shown in FIG. 10, the front patch 17 has a hook material 13 of the fastening tape 10a. It is configured so that it can be fixed. With such a configuration, the back body 6 of the diaper can be fixed to the front body 2, and the diaper can be worn by the wearer. The front patch 17 may be made of a mechanical fastener loop material. FIG. 10 is a perspective view showing a usage state of the tape-type disposable diaper 100 shown in FIG. As shown in FIG. 10, one fastening tape 10a can be fixed to the front patch 17 and can also be fixed to another fastening tape 10a.

  In this specification, “front body” means a part covering the abdomen side (front of the body) of the wearer when wearing a diaper, and “inseam” means wearing a diaper on the wearer. In the meantime, a part covering the inseam of the wearer, “back body” means a part covering the back side (back of the body) of the wearer when the diaper is worn on the wearer.

[3-1] Fastening tape:
The fastening tape provided in the tape-type disposable diaper of the present invention is the above-described fastening tape of the present invention, and is arranged so as to extend from the left and right side edges of the back body, and fixes the back body and the front body. It is possible. One end of the fastening tape is fixed to the back body by an adhesive such as a hot melt adhesive.

[3-2] Absorber:
The absorber is a member for absorbing and holding the wearer's urine. The absorber absorbs and holds the wearer's urine and body fluid and is made of an absorbent material.

  Examples of the absorbent material constituting the absorber include conventionally known absorbent materials usually used for disposable diapers and other absorbent articles, such as fluff pulp, super absorbent polymer (Super Absorbent Polymer; hereinafter referred to as “SAP”). A hydrophilic sheet). As the fluff pulp, it is preferable to use a cotton pulp or non-wood pulp defibrated, and as the SAP, it is preferable to use sodium polyacrylate, and as the hydrophilic sheet, tissue, absorbent paper, It is preferable to use a nonwoven fabric subjected to a hydrophilic treatment.

  These absorbent materials are usually used as a single-layer or multi-layer mat. Under the present circumstances, 1 type may be used independently among the said absorptive materials, and 2 or more types may be used together. Among these, what used together about 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. The SAP may be uniformly mixed in each mat of fluff pulp, or may be arranged in layers between layers of multiple layers of fluff pulp.

  It is preferable that the absorber is interposed at least in part between the top sheet and the back sheet. More specifically, the absorbent body may be interposed at least in the crotch region, and the absorbent body may extend to the front body and the back body. A flap portion where no absorber is interposed is formed between the top sheet and the back sheet at the peripheral portion of the absorber.

  It is preferable that the absorber is entirely wrapped with a hydrophilic sheet. Such a configuration has an advantage that SAP can be prevented from leaking from the absorber and shape stability can be imparted to the absorber.

  Although there is no restriction | limiting in particular about the shape of an absorber, The shape used in the conventional disposable diaper and other absorbent articles, for example, a rectangular shape, an hourglass type, a gourd type, a T shape etc. can be mentioned. A tape-type disposable diaper 100 shown in FIG. 9 is an example using an hourglass-type absorber 22.

  In addition, a sheet (second sheet) for diffusing liquid such as urine and body fluid may be incidentally disposed on the surface side of the absorber (for example, between the absorber and the top sheet). . When this second sheet is attached, due to the wearer's posture, etc., even when the space on the back side of the top sheet is not sufficiently formed, the absorption rate of urine, body fluid, etc. is difficult to decrease, and the absorption rate decreases. It is possible to prevent leakage of urine and body fluids.

  Examples of the material constituting the second sheet include hydrophilic and liquid-permeable materials such as woven fabric, non-woven fabric, porous plastic, and fluff pulp. Examples of these constituent materials include polypropylene, polyethylene, polyester, rayon, pulp, and composite fibers thereof. As the pulp, crimped fibers such as curly cellulose fibers can be suitably used.

[3-3] Top sheet:
A top sheet is a sheet | seat arrange | positioned so that the upper surface (surface located in a wearer's skin side at the time of mounting | wearing of a diaper) may be coat | covered. At least a part (all or a part) of the top sheet is made of a liquid-permeable material that allows the wearer's urine and body fluid to permeate. Usually, the vicinity of the surface of the absorber is made of a liquid-permeable material. ing. As described above, it is sufficient that at least a part of the top sheet is made of a liquid permeable material, and the entire top sheet is not necessarily made of a liquid permeable material.

  Examples of the liquid permeable material constituting the top sheet include a woven fabric, a nonwoven fabric, and a porous film. Among these, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment. There is no restriction | limiting in particular in the kind of nonwoven fabric, For example, the conventionally well-known nonwoven fabric manufactured by various manufacturing methods, such as air through (card hot air), card | curd embossing, and a spun bond, can be used conveniently.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials. In addition, a top sheet (center sheet) made of a liquid permeable material is disposed on the surface of the wearer when the diaper is worn, and another sheet (side sheet) is disposed on the side flap. Sheet) may be arranged. The tape-type disposable diaper 100 shown in FIG. 9 has a top sheet 18 (center sheet 18a) made of a liquid permeable material at the center, and the side flap 8 portion of the diaper is resistant to liquid permeation. It is the example which has arrange | positioned the side sheet | seat 19 which consists of a ventilation water-repellent material shown.

[3-4] Backsheet:
A back seat | sheet is a sheet | seat arrange | positioned so that the lower surface (surface located in a wearer's clothing side at the time of mounting | wearing of a diaper) may be coat | covered. The back sheet is made of a liquid-impermeable material in order to prevent the wearer's urine from leaking outside the diaper.

  Although there is no restriction | limiting in particular in the arrangement | positioning method of a back seat | sheet, From a viewpoint of preventing the leakage of the urine absorbed with the absorber, it can arrange | position at least in the part in which an absorber exists. For example, the tape-type disposable diaper 100 shown in FIG. 9 is an example in which the back sheet 20 is arranged so as to match the outer shape of the diaper.

  Examples of the liquid-impermeable material constituting the back sheet include a liquid-impermeable film made of a resin such as polyethylene. Among these, it is preferable to use a microporous polyethylene film. This microporous polyethylene film has a large number of fine pores of 0.1 to several μm, and is liquid impervious but has moisture permeability, so that the inside of the diaper can be prevented from being steamed There is.

  Note that a sheet material (cover sheet) may be bonded to the outer surface of the back sheet. This cover sheet has an advantage that the back sheet is reinforced and the feel (tactile feeling) of the back sheet is improved.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Among these, it is preferable to use a dry nonwoven fabric and a wet nonwoven fabric made of a thermoplastic resin such as polyethylene, polypropylene, and polyester.

[3-5] Solid gather:
The tape-type disposable diaper of the present invention may include a three-dimensional gather in order to prevent side leakage of urine excreted by the wearer. The three-dimensional gather is a member for preventing side leakage of the urine excreted by the wearer, and is a leak-proof wall configured to stand up three-dimensionally. By forming such a three-dimensional gather, the three-dimensional gather serves as a breakwater, and leakage from a leg-diameter opening or the like (so-called “lateral leakage”) can be effectively prevented.

  The structure of a three-dimensional gather can employ | adopt the structure used for the conventional disposable diaper and other absorbent articles. For example, a stretchable material (a three-dimensional gathered stretchable material) disposed on a part of the water-repellent sheet material and a sheet (gather) formed on the sheet material by the three-dimensional gathered stretchable material can be suitably used.

  The three-dimensional gather may be formed of a sheet material that is completely different from the top sheet or the back sheet, but may be formed by folding back a top sheet (for example, a center sheet) or a side sheet.

  In order to prevent leakage from the crotch part, this three-dimensional gather may be formed at least in the crotch part, but may be formed in the front body or the back body. For example, in the tape-type disposable diaper 100 shown in FIG. 9, a pair of three-dimensional gathers 26a and 26b are continuously formed from the crotch part 4 to both the front body 2 and the back body 6 along the longitudinal direction of the diaper. It is an example. The three-dimensional gathers 26a and 26b are provided with three-dimensional gather elastic members 36a and 36b at the tip portions thereof. Further, two or more pairs of solid gathers may be formed.

  The three-dimensional gather may be an inward gather that tilts toward the inside of the diaper, or an outward gather that tilts toward the outside of the diaper. Further, it may be a three-dimensional gather (a so-called C-fold gather, Z-fold gather, or the like) in which a bent portion or a folded portion is formed in a part of the height direction.

[3-6] Various elastic materials:
The tape-type disposable diaper of the present invention can further be provided with a leg-surrounding stretch material and a waist-surround stretchable material.

  The leg circumference elastic material is an elastic material arranged along the leg circumference opening. By arranging the leg-stretchable material, a gather (leg gather) rich in stretchability can be formed in the leg-surrounding opening. When the leg gather is formed, it is difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented. In addition, when the elastic material around the legs is placed (forms leg gathers), the elastic material around the legs shrinks on both sides of the absorber when changing the diaper, so that the vicinity of the crotch deforms into a bowl shape and forms a recess. Is done. And when exchanging a diaper, since urine and a bodily fluid accumulate in the recessed part, there exists an advantage that urine and a bodily fluid become difficult to spill.

  For example, the tape-type disposable diaper 100 shown in FIG. 9 is an example in which two leg elastic members 40 are linearly arranged along the longitudinal direction of the diaper, and leg gathers are formed by the leg elastic members 40. ing. The leg-surrounding elastic member 40 can be made of, for example, rubber thread. In addition, you may arrange | position the leg periphery elastic material curvedly along the curve of the leg periphery opening part of a diaper other than arrange | positioning linearly, for example.

  It is preferable to arrange the leg-surrounding elastic member 40 in a portion outside the upright line 46 of the three-dimensional gathers 26a and 26b, like the tape-type disposable diaper 100 shown in FIG. If arrange | positioned in this way, a mounting feeling can be improved, ensuring sufficient leak-proof effect of a three-dimensional gather.

  In addition, although the tape-type disposable diaper 100 shown in FIG. 9 is an example which made the shape, arrangement position, arrangement number, etc. of the leg periphery elastic material 40 left-right symmetric, a left-right asymmetric may be sufficient. Moreover, although the tape-type disposable diaper 100 shown in FIG. 9 has shown the example which has arrange | positioned two leg periphery elastic materials 40 on the one side of a diaper, you may arrange | position only one and arrange | position three or more. May be. In addition, when using a plurality of leg-around elastic members, the thickness, the stretch ratio, and the like can be appropriately set according to the purpose, and the same or different ones may be used.

  The waist elastic material is an elastic material arranged along the waist opening. By arranging the elastic material around the waist, a gather (waist gather) rich in elasticity can be formed in the waist opening. This waist gather makes it difficult for gaps to be formed around the waist, and urine leakage from around the waist can be prevented. Moreover, the fitting property of a diaper becomes favorable and can prevent the diaper slipping down.

  A tape-type disposable diaper 100 shown in FIG. 9 is an example in which a belt-like waist elastic member 42 is disposed along the edge of the back body 6 of the diaper. As the waist elastic member 42, thread rubber can be used. As shown in FIG. 9, the waist elastic member 42 may be disposed only on the back body (back side), but may be disposed only on the front body (abdominal side), or the back body and the front body. It may be arranged at both times.

  For example, when two fastening tapes 10a are arranged on each of the left and right side edges 6a and 6b of the back body 6 as in the tape-type disposable diaper 100 shown in FIG. It is preferable that the elastic material 42 around the waist is attached along the leg and the elastic material 40 around the leg is attached at least along both side edges of the crotch part 4.

  According to such a configuration, the fastening tape 10a disposed on the upper side of the two fastening tapes 10a and the waist elastic member 42 are integrated to improve the fit of the diaper around the wearer's waist. be able to. In addition, the fastening tape 10a disposed on the lower side of the two fastening tapes 10a and the leg-surrounding elastic member 40 are integrated to improve the fit of the diaper around the wearer's leg. The effect is that the fastening tape 10a arranged on the upper side is arranged so as to extend in substantially the same direction as the edge of the front body 2, and the fastening tape 10a arranged on the lower side is placed on the edge side of the front body 2 (diaper It becomes particularly large when it is arranged to be pulled up toward the upper side.

  In consideration of the degree of gather contraction and the like, these stretchable materials can appropriately set the constituent material, the elongation rate of the material, the stretched state when fixed, and the like.

  As an elastic material, the elastic material used in the conventional disposable diaper can be used suitably. Specific examples include elastic rubber, elastic film, etc., as well as thread rubber and flat rubber made of elastic materials such as natural rubber and synthetic rubber (urethane rubber, etc.).

  The stretchable material is preferably fixed in the stretched state in order to exert a sufficient stretch force. For example, when the elastic material is natural rubber or synthetic rubber, it is preferably fixed in a stretched state of 110 to 400%, and more preferably fixed in a stretched state of 200 to 300%. By fixing in the extended state in such a range, a sufficient stretching force can be applied.

  The said elastic material can be fixed with respect to the other structural member of a diaper. Specific examples of the fixing method include a method using a hot melt adhesive and other highly fluid adhesives, and a method using heat, ultrasonic waves and the like such as heat sealing.

[4] Tape type disposable diaper manufacturing method:
The method for producing the tape-type disposable diaper of the present invention will be described by exemplifying a case where the tape-type disposable diaper 100 shown in FIG. 9 is produced. First, after placing the absorbent body 22 and the leg-surrounding elastic member 40 wrapped in a hydrophilic sheet on the surface of a long sheet material (back sheet material) which is a material of the back sheet 20, the above-described back sheet material A long sheet material (top sheet material) as a material of the top sheet 18 is placed on the surface side to obtain a laminated body (diaper continuous body) as an intermediate body of the diaper. At this time, the top sheet material uses two types, a top sheet material corresponding to the center sheet 18 a and a side sheet material corresponding to the side sheet 19. In addition, the three-dimensional gathers 26a and 26b are formed in the said side sheet material by folding up a part of side sheet material corresponded to the side sheet 19. FIG.

  Thereafter, the obtained diaper continuum is cut out (R-cut) by cutting out a portion corresponding to the opening around the leg of the diaper in an arc shape to form an opening around the leg. Thereafter, two fastening tapes 10a are respectively attached to the side edges 6a and 6b of the back body 6 of the diaper, and then cut at a predetermined position, whereby the tape-type disposable diaper 100 can be manufactured.

  The series of steps described above can be performed continuously by mechanical means. Specifically, a device that continuously feeds a long sheet material from a roller can be used.

  The fastening tape of the present invention can be suitably used as a fastening tape for a tape-type disposable diaper used by an infant or an adult such as an elderly person or a disabled person who needs care. The method for producing a fastening tape of the present invention can be suitably used as a method for producing a fastening tape of a tape-type disposable diaper used by an infant or an adult such as an elderly person or a disabled person who needs care. Moreover, the tape-type disposable diaper of this invention can be used suitably as a diaper for adults, such as an elderly person and a disabled person for infants or the elderly who require nursing care.

2: Front body, 4: Crotch, 6: Rear body, 6a, 6b: Side edges, 8: Side flaps, 10a, 10b, 110: Fastening tape, 11a, 11b, 111: Base sheet, 12, 112 : Loop material, 12a, 72a: Loop material adhesion surface, 13, 113: Hook material, 13a: Hook material adhesion surface, 15: Missing part, 17: Front patch, 18: Top sheet, 18a: Center sheet, 19: Side Sheet, 20: Back sheet, 22: Absorber, 25: Film for loop material, 26a, 26b: Three-dimensional gather, 27: Loop, 28: Film for hook material, 29: Hook, 36a, 36b: Three-dimensional gather elastic material, 40: elastic material around leg, 42: elastic material around waist, 46: standing line, 51: first region, 52: second region, 53: third region, 70: second long intermediate sheet 71: Long hook material sheet, 71a: Hook material adhesion surface, 72: Long loop material, 72a: Loop material adhesion surface, 73a, 73b: Long base material sheet, 74: Fastening tape intermediate, 74a : Trough part, 74b: linear side edge, 100: tape-type disposable diaper.

Claims (11)

A base material sheet made of non-woven fabric,
The loop material film is provided with a loop disposed on one surface of the loop material film and the loop material film, and the loop material is bonded to the surface opposite to the surface on which the loop is disposed of the loop material film. A sheet-like loop material in which a part of the loop material adhesion surface is bonded to one surface of the base sheet,
A hook material film and a plurality of protrusions formed on one surface of the hook material film, and a flat surface on a surface opposite to the surface on which the plurality of protrusions of the hook material film are formed. A fastening tape comprising: a hook material bonding surface, and a hook material having the hook material bonding surface bonded to a portion of the loop material bonding surface of the loop material to which the base sheet is not bonded. The base sheet is a rectangular shape of the nonwoven fabric, at one end side portion of its longitudinal, which has moved away and divided along the widthwise direction,
The fastening tape according to claim 1, wherein the hook material adhesion surface is adhered to the loop material adhesion surface at a portion where the base sheet is separated.   The fastening tape according to claim 1 or 2, wherein a ratio of an adhesion area between the hook material adhesion surface and the loop material adhesion surface to a total area of the hook material adhesion surface is 50 to 100%.   The fastening tape according to any one of claims 1 to 3, wherein an adhesive strength between the base material sheet and the loop material is different from an adhesive strength between the hook material and the loop material. The hook material adhesion portion to which the hook material adhesion surface of the loop material is adhered is colored, and the portions other than the hook material adhesion portion are colored in a color different from the hook material adhesion portion. The fastening tape according to any one of 1 to 4 . The loop material film is provided with a loop disposed on one surface of the loop material film and the loop material film, and the loop material is bonded to the surface opposite to the surface on which the loop is disposed of the loop material film. A first step of obtaining a first long intermediate sheet by adhering a long base sheet made of non-woven fabric to a part of the loop material adhesion surface of the sheet-like long loop material having a surface;
The hook material film and the hook material are attached to the base material sheet non-adhered portion of the first long intermediate sheet to which the long base material sheet is not adhered, on the loop material adhesion surface of the long loop material. A long length comprising a plurality of protrusions formed on one surface of the film, and having a hook material bonding surface which is a flat surface on the surface opposite to the surface on which the plurality of protrusions of the film for hook material are formed. A second step of bonding the hook material bonding surface of the hook material sheet to obtain a second long intermediate sheet;
A third step of cutting the second long intermediate sheet into a predetermined size to obtain a plurality of fastening tapes. In the first step, a first adhesive is applied to the loop material adhesion surface, and then the long base sheet is adhered to a part of the loop material adhesion surface by the first adhesive. And
The method for producing a fastening tape according to claim 6 , wherein in the second step, the hook material adhesion surface of the long hook material sheet is adhered to the base sheet non-adhered portion by the first adhesive. . In the first step, one of the long base sheets is bonded to a first region including one end of the long loop material in the short direction of the loop material bonding surface, Adhering another long base sheet to the second region including the other end,
In the second step, the hook material bonding surface of the long hook material sheet is bonded to a third region of the loop material bonding surface between the first region and the second region. The manufacturing method of the fastening tape of Claim 6 or 7 . In the second step, the long hook material sheet preliminarily coated with the second adhesive is prepared on the hook material bonding surface, and the hook material bonding surface is bonded to the first region. The manufacturing method of the fastening tape according to claim 8 , which is bonded to the long base sheet, the third region of the loop material bonding surface, and the long base sheet bonded to the second region. . The third step sequentially passes the second long intermediate sheet through the first region, the third region, the second region, the third region, and the first region. By cutting along such an S-curved cutting locus, two fastening tape intermediates having S-curved side edges on one side and linear side edges on the other side were obtained and obtained. each of said fastening tape intermediates, the disconnect between the S-curve shape of the side edge troughs and the linear side edges, claim 8 or a step of obtaining a plurality of said fastening tape The manufacturing method of the fastening tape of 9 . Consists of each part of the front body, crotch and back body,
An absorber, a top sheet that is arranged so as to cover the surface of the absorber, and at least partly made of a liquid permeable material, and a back sheet that is arranged so as to cover the back surface of the absorber. The seat according to any one of claims 1 to 5 , wherein the front body and the back body can be fixed by being arranged so as to extend from the left and right side edges of the back body. A tape-type disposable diaper comprising a wearing tape.

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