JP2015093111A - Fastener tape and disposable diaper having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastener tape that has a structure in which tab used to peel a fastener material such as a face fastener is easily gripped and pulled and, moreover, a tape base material is prevented from being peeled from the fastener material when the tab is gripped and pulled, and to provide a disposable diaper having this fastener tape.SOLUTION: In a fastener tape used for fixing the rear body and front body of a disposable diaper, and designed such that a fastener material is joined to one face of a tape base material attached to each side part of the rear body, the tape base material integrally has a base-material leading end part that projects toward a tape leading-end further than the fastener material. The base-material leading end part is folded toward the fastener material side and covers part of the surface of the fastener material, and also joined to the surface of the fastener material. The fastener material is not fastened to its mating fastener material and is used as a tab used to peel the fastener material.

Description

  The present invention relates to a fastening tape and a disposable diaper provided with the fastening tape.

  Conventionally, as shown in FIG. 7, it is a fastening tape 61 used for fixing the back body 51a and the front body 51b of a flat disposable diaper 51, and is a sheet-like attached to the side part of the back body 51a. There is known a fastening tape 61 having a structure in which a fastening material 63 that constitutes one of the surface fasteners is joined to one surface of the tape base material 62 (see Patent Document 1).

The fastening material 63 constituting one of the surface fasteners has a predetermined width dimension w ₀ , and the fastening material constituting the other of the surface fasteners joined to the outer surface of the front body 51b over the entire width. It is fixed to 71.

  Further, the tape base material 62 is provided with a base material front end portion 62 a that protrudes further toward the tape front end side than the fastening material 63, and this base material front end portion 62 a is a surface fastener made of a pair of fastening materials 63, 71. It is used as a knob 64 when peeling (peeling).

  However, in this prior art, as described above, since the knob 64 used when peeling the hook and loop fastener is constituted only by the base end portion 62a of the tape base 62, the following inconvenience is caused. There is.

  That is, the tape base material 62 is generally formed of a thin and soft material sheet such as a nonwoven fabric. Accordingly, since the knob 64 is thin and soft, the knob 64 is difficult to pick and pull.

  Further, when the knob 64 is picked and pulled when the surface fastener is peeled off, the fastening member 63 is not directly picked and is not pulled. Therefore, when the bonding strength between the tape base material 62 and the fastening material 63 is small and the fastening strength between the fastening materials 63 and 71 is large, the fastening materials 63 and 71 are still fastened and the tape base material 62 is fixed. It may peel off from the fastening material 63.

JP-A-11-42249

  In view of the above points, the present invention is a pinch piece used when peeling fastening materials such as hook-and-loop fasteners, and is easy to pick and pull, and when the pinch piece is picked and pulled, the tape base material is It is an object of the present invention to provide a fastening tape having a structure that does not peel off from the fastening material and a disposable diaper provided with the fastening tape.

  In order to achieve the above object, a fastening tape according to claim 1 of the present invention is a fastening tape for fixing a back body and a front body of a disposable diaper, and is attached to a side portion of the back body. In the fastening tape in which the fastening material is bonded onto one surface of the tape base material, the tape base material integrally has a base material tip portion protruding toward the tape tip side from the fastening material, and the base The material front end portion is folded back to the fastening material side to cover a part of the surface of the fastening material and bonded onto the surface of the fastening material, and the fastening material is covered by the base material front end portion. It is characterized in that it is not fastened to the other party's fastening material in the broken area, but is a picking piece when the fastening material is peeled off.

  Moreover, the fastening tape according to claim 2 of the present invention is the fastening tape according to claim 1, wherein the tip of the base material is in the region of ½ or less of the width dimension of the fastening material. It is characterized by covering the surface of the fastening material.

  The fastening tape according to claim 3 of the present invention is the fastening tape according to claim 1 or 2, wherein the tip of the base material is formed of the fastening material by a fastening function set on one surface thereof. It is bonded on the surface, or is bonded on the surface of the fixing material by a fixing means by adhesion, pressure bonding, fusion or welding.

  The fastening tape according to claim 4 of the present invention is the fastening tape according to any one of claims 1 to 3, wherein the knob is a base of the tape base material and the fastening material. It consists of the laminated structure of a material part, the fastening piece part of a fastening material, and a base-material tip part.

  Furthermore, the disposable diaper according to claim 5 of the present invention is characterized in that the fastening tape according to any one of claims 1 to 4 is provided symmetrically on the right and left of the diaper.

  In the fastening tape of the present invention having the above-described configuration, the fastening material is bonded onto one surface of the tape base material, and the base material tip portion protruding to the tape tip side from the fastening material is integrally formed with the tape base material. Under the premise that it is provided, the base end portion of the tape base material is folded back to the fastening material side to cover a part of the surface of the fastening material and bonded onto the surface of the fastening material, The tape base material because the fastening function stops in the area covered with the tip of the base material and is not fastened to the other fastening material, but is used as a gripping piece when the fastening material is peeled off. A knob having a laminated structure in which the fastening material and the tip of the base material are stacked is formed. Therefore, since the knob piece made of this laminated structure is thicker and more rigid than the knob piece made of the conventional one-layer structure, it is easy to pick and pull when picking it with fingers. Further, since the fastening material is also picked and pulled when the fastening material is peeled off as a part of the knob, a situation may occur in which only the tape base material is peeled off and the fastening material is left. Absent.

  It is preferable that the tip of the base material covers the surface of the fastening material in a region of 1/2 or less of the width dimension of the fastening material. There is a risk that the fixing function, which is the original function, may be hindered.

  In addition, when the fastening function is set on one surface of the base material, the base material is joined on the surface of the fastening material by using this fastening function. May be bonded to the surface of the fastening material by a fixing means such as adhesion, pressure bonding, fusion (including thermal fusion) or welding (including ultrasonic welding).

  In the above description, the knob piece has a laminated structure in which the tape base material, the fastening material, and the tip of the base material are stacked. However, when the fastening material is a surface fastener, most of the surface fasteners are sheets. Since the base plate portion and the fastening piece portion provided on the flat surface of the base portion are counted separately, the knob piece is divided into a tape base material and a base plate for each component. A four-layered structure including a base material portion of the adhesive material, a fastening piece portion of the fastening material and a tip portion of the base material is formed.

  The fastening tape of the present invention is used for disposable diapers. In the disposable diaper, the fastening tape is provided symmetrically on the left and right sides of the diaper in order to fix the front body and the back body at the left and right flank portions of the person using the disposable diaper.

  The present invention has the following effects.

  That is, in the present invention, as described above, a knob having a laminated structure in which the tape base material, the fastening material, and the tip of the substrate are laminated is formed, and the knob having the laminated structure is thick and rigid. Because it has, it is easy to pick and pull. In addition, since the fastening material is also a part of the picking piece and is pulled and pulled when the fastening material is peeled off, only the tape base material is peeled off and the fastening material remains, Both are not separated. Therefore, according to the intended purpose of the present invention, the knob base used when peeling the fastening material is easy to pick and pull, and when the pick piece is picked and pulled, the tape substrate is peeled off from the fastening material. It is possible to provide a fastening tape having a structure that does not occur.

  In addition, by setting the area covered by the tip of the base material to an area of 1/2 or less of the width dimension of the fastening material, the fastening function that is the original function of the fastening material can be sufficiently secured, By joining the tip of the base material onto the surface of the fastening material by means of fixing by crimping, fusing or welding, both can be firmly joined. Moreover, when a fastening material has a base material part and a fastening piece part, the knob | pick piece which consists of a laminated structure which extends to four layers for every component can be set.

The top view which shows the surface by the side of the skin surface of the fastening tape which concerns on the Example of this invention, and a disposable diaper The top view which shows the surface of the non-skin side of the fastening tape and disposable diaper Perspective view of the fastening tape and disposable diaper The main part enlarged plan view of the fastening tape and disposable diaper (A) is explanatory drawing which shows the cross-section of the same fastening tape and a disposable diaper, and is an AA line expanded sectional view in FIG. 4, (B) is the state before the base material front-end | tip part in the same fastening tape is turned up. Explanatory drawing showing Explanatory drawing which shows the state which fastened the fastening tape to the other fastening material Overall perspective view of fastening tape and disposable diaper according to conventional example

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

  1 to 3 show a fastening tape 21 according to an embodiment of the present invention and an entire disposable diaper 1 including the fastening tape 21. The disposable diaper 1 has a diaper main body 11, and fastening tapes 21 are attached to left and right side portions of the diaper main body 11.

  The diaper main body 11 includes a liquid-permeable top sheet 12 positioned on the inner surface side, a liquid-impermeable back sheet 13 positioned on the outer surface side, and an absorber (not shown) positioned between the two sheets 12 and 13. Are integrated through an adhesive such as hot melt. Moreover, the diaper main body 11 is formed in a predetermined size (the size is not limited), has a back body 11a and a front body 11b, and is in a flat shape with a crotch part 11c positioned approximately between these. Is formed.

  The liquid-permeable top sheet 12 is made of, for example, a woven fabric, a nonwoven fabric, or a porous soft resin film. The liquid-impermeable back sheet 13 is made of, for example, a soft resin film such as polyethylene. The absorbent body is made of, for example, pulp using as a main material a polymer water-absorbing polymer in combination, and may be a thermoplastic resin, cellulose fiber, or a polymer heat-absorbing polymer heat-treated. The polymer water-absorbing polymer is preferably in the form of particles having a property of absorbing and holding a liquid 20 times or more of its own weight and having a property of gelling.

  Three-dimensional gathers 14 for preventing leakage are provided on the left and right sides of the top sheet 12. In order to improve the wearability, leg gathers 15 are provided on the left and right outer sides of the three-dimensional gather 14, and a waist gather 16 is provided on the upper side of the back body 11a.

  As described above, the fastening tape 21 is attached to the left and right side portions of the diaper main body 11, that is, the fastening tape 21 is attached to the left and right side portions of the back body 11a.

  As shown in an enlarged view in FIG. 4, the fastening tape 21 has a sheet-like tape base material 22 attached to the side portion of the back body 11 a, and one surface of the tape base material 22 (on the skin surface side). The fastening material 23 constituting one (one element) of the hook-and-loop fastener is joined on the surface). Further, the tape base material 22 is formed into a substantially rectangular sheet shape having predetermined vertical and horizontal dimensions, and has a substantially planar trapezoidal protrusion (tab) at the tip (the end farther from the back body 11a, the right end in the figure). ) 22a is provided in plural (two pieces in the figure), the fastening material 23 constituting one of the surface fasteners is joined to one surface (surface on the skin surface side) of the projecting piece 22a.

As the tape base material 22, for example, a resin film or a non-woven sheet can be used alone or by laminating several kinds, preferably a basis weight of 40 to 150 g / m ² , more preferably a basis weight of 40 to 80 g / m. It is preferable to use ^two single-layer or multi-layer nonwoven fabrics. As the nonwoven fabric processing method, a spunbond method having excellent strength characteristics can be applied.

  As shown in the schematic cross section of FIG. 5, the fixing member 23 has a sheet-like base material portion 23a. The male material constituting one of the surface fasteners over the entire surface of the base material portion 23a. A side fastening piece (hook part) 23b is provided. The base material portion 23a is bonded onto one surface of the tape base material 22 via an adhesive (including a normal adhesive used at normal temperature and a hot melt adhesive used by heat melting) 24, or by heat seal bonding or the like. Bonded on one surface of the tape substrate 22. The fastening piece portion 23b is formed on the female fastening piece portion (loop portion) of the fastening material 17 constituting the other (other element) of the surface fastener joined to the outer surface of the front body 11b shown in FIG. On the other hand, it is fixed (engaged) so as to be peelable.

  Further, as shown in the schematic cross section of FIG. 5, the tape base material 22 integrally has a base material front end portion (folded portion) 22 b that protrudes to the tape front end side (rightward in the drawing) from the fastening material 23. The base material tip 22b is folded back toward the fastening material 23 so as to cover a part of the surface of the fastening material 23 and to be bonded onto the surface of the fastening material 23.

That tape base material 22 as shown in FIG. 5 (B), integrally has a base member distal end portion 22b of w ₁ projects a predetermined width toward the tape tip end side than the fastening member 23. As shown by the arrow D, the base end portion 22b is folded back approximately 180 degrees toward the fastening material 23 at the base portion 22c, and the surface of the fastening material 23 as shown in FIG. And is bonded onto the surface of the fastening material 23. In addition, since the fixing material 23 is joined on one surface of the protruding piece 22a as described above, the base material tip 22b is provided at the tip of the protruding piece 22a.

  Further, as described above, the fastening material 23 is provided with the fastening piece portion 23b over the entire surface of the sheet-like base material portion 23a. Covers a part of the surface of the fastening piece portion 23b and is joined to the surface of the fastening piece portion 23b.

  As a means for joining, when a fastening function (a female side function of the hook-and-loop fastener) is set on one surface of the base end portion 22b, it is possible to join by this fastening function. Regardless of this, in order to achieve a stronger bond, it is suitable to use means such as adhesive bonding, pressure bonding with lower pressure, welding by heating, or welding by ultrasonic waves. It is possible to substantially completely prevent the bonded base end portion 22b from being peeled off from the fastening material 23.

  On the other hand, the fastening material 23 stops the fastening function (surface fastener function) in the region covered by the base end portion 22b and is not fastened to the other fastening material 17, whereby the fastening materials 17, 23 are used. It is set as the knob 25 used when peeling each other. The knob 25 has a laminated structure of four layers including a tape base material 22, a base material portion 23a of the fastening material 23, a fastening piece portion 23b of the fastening material 23, and a base material tip portion 22b for each component. (As described above, the tape base material 22 and the base material tip portion 22b which is a part of the tape base material 22 itself may have a laminated structure of non-woven fabric or the like. These are counted as one component).

In addition, the width dimension w _{2 of the} region where the base end portion 22 b covers a part of the surface of the fastening material 23 is set to ½ or less of the width dimension w ₃ of the fastening material 23. Therefore, the fastening material 23 is made into a pinching piece 25 in an area of ½ or less of the entire width, and the fastening function (surface fastener function) is exhibited in the remaining part. In order to be easily seen knob to knob piece 25 is preferably the width w ₂ of the regions covering a portion of the surface of the base member distal end portion 22b is fastening member 23 to which the actual size in 3mm or more.

  According to the fastening tape 21 and the disposable diaper 1 having the above configuration, the following operational effects are exhibited.

  That is, in the fastening tape 21 having the above-described configuration, the fastening material 23 is joined to one surface of the tape base material 22 and the base material tip portion 22b that protrudes to the tape base material side from the fastening material 23 to the tape base material 22. And the base material tip 22b of the tape base material 22 is folded back to the fastening material 23 side to cover a part of the surface of the fastening material 23 and the fastening material. In the region where the fastening material 23 is bonded to the surface of the base material 23 and is covered with the base end portion 22b, the fastening function is stopped and the fastening material 17 is not fastened to the other fastening material 17 so that the fastening material is removed. Since it is set as the mache piece 25, a knob piece 25 having a laminated structure in which the tape base material 22, the fixing material 23, and the base material tip 22 b are stacked is formed. Therefore, the pick piece 25 made of this laminated structure is thicker and more rigid than the pick piece made of the conventional one-layer structure, so that it is easy to pick and pull when picking it with fingers. Further, since the fastening material 23 is also picked and pulled when the fastening material 23 is peeled off as a part of the tab 25, only the tape base material 22 is peeled off and the fastening material 23 remains. Will not occur. Therefore, as the intended purpose of the present invention, the picking piece 25 used when peeling the fastening material 23 is easy to pick and pull, and when the picking piece 25 is picked and pulled, the tape base material 22 is stopped. The fastening tape 21 having a structure that does not peel off from the dressing 23 can be provided.

Further, in order to width w ₂ of the coating area by the base member distal end portion 22b is a half or less of the width w ₃ of the fastening member 23, the fastening function is fastening material 23 original function Since the base material tip 22b is bonded onto the surface of the fixing material 23 by a fixing means by adhesion, pressure bonding, fusion or welding, the two materials 22b and 23 can be firmly bonded. Can do. Further, since the fastening material 23 constituting one element of the hook-and-loop fastener has the base portion 23a and the fastening piece portion 23b, the knob 25 having a laminated structure of four layers for each component. Accordingly, the knob 25 can be made relatively thick and hard.

  As shown in FIG. 6, when the fastening tape 21 is fastened to the other fastening material 17 with the fastening material 23, the base material tip 22 b is sandwiched between the fastening materials 17 and 23. Therefore, the knob 25 is lifted with respect to the surface of the mating fastening member 17 by the thickness of the base end portion 23b, and may have an angle θ. Therefore, since the knob 25 is fixed in a lifted state and may be fixed in a state where the tip of the knob 25 is directed obliquely upward, the knob 25 is more easily picked up (the other party) Since a gap c is formed between the fixing material 17 and the base end portion 22b, it is easy to insert the tip of a finger into the gap c).

  Furthermore, in the fastening tape 21 configured as described above, since the base material tip 22b is set at the tip of the flat trapezoidal protrusion piece 22a, the base material tip 22b is also formed as shown in FIG. When the base material tip portion 22b thus formed into a flat trapezoid is folded back and joined to the fastening material 23, the fastening material is located on both sides of the base material tip portion 22b and presents a planar triangle. 23, the exposed portion 23c is left, and in this exposed portion 23c, the fastening function of the fastening material 23 is maintained without being stopped. Therefore, since the exposed portion 23c of the plane triangle can be fixed to the other fixing material 17, the exposed portion 23c can be used as a temporary fixing portion (the knob piece 25 has the tip end portion 22b of the base material). The folded portion is not fixed to the counterpart fixing material 17, but the flat triangular exposed portions 23c located on both sides thereof can be fixed to the counterpart fixing material 17 only in this portion. Since only a part of the entire piece is fixed to the other material 17, it is possible to prevent the knob 25 from being bent or turned unintentionally).

  In addition, in the said Example, when the female function of a surface fastener is set to the outer surface (the lower surface in FIG. 5 (A) (B)) of the tape base material 22 (loop processing), the disposable diaper 1 will be provided with a pair of left and right. The adhesive tapes 21 and 21 can be laminated and pasted together. Therefore, even a person with a thin waist can use the disposable diaper 1 with good wearing feeling.

  Moreover, in the said Example, although the fastening function by the fastening material 23 was made into the fastening function by a hook-and-loop fastener, the fastening function by the fastening material 23 is a fastening function by an adhesive or an adhesive tape etc. in addition to this. Also good.

  The disposable diaper of the present invention is particularly suitable for use as a disposable diaper for adults, but does not limit its application.

DESCRIPTION OF SYMBOLS 1 Disposable diaper 11 Diaper main body 11a Back body 11b Front body 11c Crotch part 12 Top sheet 13 Back sheet 14 Solid gather 15 Leg gather 16 Waist gather 17, 23 Fastening material 21 Fastening tape 22 Tape base material 22a Protrusion piece 22b Base material Front end portion 22c Root portion 23a Base material portion 23b Fastening piece portion 23c Exposed portion 24 Adhesive 25 Picking piece

Claims (5)

In the fastening tape for fixing the back body and the front body of the disposable diaper, wherein the fastening material is bonded on one surface of the tape base material attached to the side part of the back body ,
The tape base material integrally has a base material tip portion protruding toward the tape tip side from the fastening material,
The base material tip is folded back to the fastening material side to cover a part of the surface of the fastening material and bonded onto the surface of the fastening material,
The fastening tape according to claim 1, wherein the fastening material is not fastened to a counterpart fastening material in a region covered by the tip portion of the base material, and is used as a gripping piece when peeling the fastening material. The fastening tape according to claim 1,
The fastening tape according to claim 1, wherein the tip of the base material covers the surface of the fastening material in a region of 1/2 or less of the width dimension of the fastening material. The fastening tape according to claim 1 or 2,
The base material tip is joined to the surface of the fastening material by a fastening function set on one surface thereof, or joined to the surface of the fastening material by fixing means by adhesion, pressure bonding, fusion, or welding. A fastening tape characterized by being made. The fastening tape according to any one of claims 1 to 3,
The fastening piece is composed of a laminated structure of the tape base material, a base material portion of the fastening material, a fastening piece portion of the fastening material, and a tip portion of the base material.   A disposable diaper comprising the fastening tape according to any one of claims 1 to 4 symmetrically on the right and left of the diaper.

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