JPH0537224U - Disposable diapers - Google Patents

Abstract

(57) [Summary] [Purpose] Fastener tapes are fixed so that they do not come off easily from the diaper. [Structure] The diaper front surface sheet (2) and the back surface sheet (3) near the waist side edge of the diaper have a first adhesive (30).
Fastener tape fixing part (23)
Applies the second adhesive (24) thereto and adheres it to the outer surface of either one of the two sheets, and also adheres to the first adhesive (30) via this one sheet. I am doing it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disposable diaper, and more particularly to a disposable diaper having a fastener tape fixed thereto.

[0002]

[Prior Art]

 Conventionally, as one means for detachably fastening the front and back bodies of a disposable diaper, a fastener tape extending outward from a waist side edge has been used. One side in the longitudinal direction of the tape is a fixing area to the diaper, and the opposite side is a sticking area for the fastening.

[0003]

[Problems to be solved by the device]

 This sticking area is fixed with an adhesive either on the front or back sheet or between both sheets, and it is easily fixed even if the attaching and detaching operation is repeated in the other sticking area. The landing area does not come off. In many cases, the top sheet is water permeable and the back sheet is water impermeable, depending on the structure of the disposable diaper. However, the non-woven fabric in which fibers are entangled under the action of high-speed fluid pressure has water permeability and soft texture, and is used as a sheet for making the surface sheet of disposable diapers and other surface side members. Often. However, the fastener tape fixed to the surface of this type of sheet has a problem that it is easily peeled off together with the fiber when the entanglement of the fiber is unraveled by the force acting on the tape at the time of fastening. is there. On the other hand, in the case of a fastener tape which is fixed to the back sheet made of a plastic film such as polyethylene which is difficult to adhere, there is a problem that it is difficult to select an adhesive to be applied to the fixed region. As a means for solving these problems, there is a technique in which the cross section in the thickness direction of the fastener tape is Y-shaped, and the front side sheet and / or the back side sheet is sandwiched between the Y-shaped bifurcated portions. According to this technique, the tape is easily fixed and does not easily peel off even when it is fastened. However, the tape structure and its fixing method are complicated, and there is a problem that the manufacturing cost of the diaper is unavoidably increased.

Therefore, the present invention aims to solve the problems of the prior art by adhering the fixing area to the adhesive that adheres the sheet on the front side of the diaper and the back sheet with the adhesive applied thereto. I have to.

[0005]

[Means for Solving the Problems]

 The gist of this invention to solve the above problems is as follows. The present invention is intended for a disposable diaper having at least a front sheet and a back sheet, and having a fastener tape extending outwardly from each of the waist peripheral edges thereof. ing.

In such a diaper, the top sheet and the back sheet are bonded to each other via the first adhesive in the vicinity of the waist side edge, and the fastener tape has one side in the longitudinal direction to the diaper. It is a fixed area, and the opposite side is an adhesive area where the front and back bodies are detachably fastened. The fixed area is adhered to the outer surface of either the front surface sheet or the back surface sheet via the second adhesive applied thereto, and these are adhered to each other via the sheet of either one of them. The feature is that both sheets are also bonded to the first adhesive that bonds them to each other. Here, the top sheet means a sheet which is adhered to the back sheet near the side edges and is located on the front side of the diaper.

[0007]

[Action]

 In the diaper according to the present invention, not only is the fastener tape adhered to the outer surface of the front sheet or the back sheet of the diaper via the second adhesive applied to the fixing area, Since the first adhesive that adheres both sheets is also adhered, if the adhesiveness of the second adhesive to the first adhesive is good, the tape will receive a force at the time of fastening. Also, they do not easily peel off from the outer surface of these sheets.

[0008]

【Example】

 The details of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a state in which a diaper 1 according to the present invention is worn, but the wearer is not shown. A front body 8 and a back body 10 of the diaper 1 are fixed to the back body 10 and are detachably fastened by a fastener tape 20 extending outward from a waist side edge 11 thereof.

FIG. 2 is a plan view showing the disposable diaper 1 shown in FIG. 1 in an unfolded state, with a part cut away. The diaper 1 is composed of a liquid-permeable front sheet 2, a liquid-impermeable back sheet 3, and an absorbent body 4 interposed between these sheets 3 and 4, and other parts around the legs. The elastic member 5, the elastic member 6 around the abdomen and the waist, and the fastener tape 20 inside the waist side edge. When viewed in the longitudinal direction, the diaper 1 is composed of a front body 8, a crotch region 9, and a back body 10.

FIG. 3 is a view taken along the line XX of FIG. 2, and shows the details of the vicinity of the waist side edge and the fastener tape 20 in a sectional view. On the surface side of the diaper 1, there is a surface sheet 2 made of a non-woven fabric in which polypropylene fibers are entangled with each other under the action of a high-pressure jet water flow. It is intermittently adhered by a ren / vinyl acetate first adhesive 30. Part of the first adhesive 30 sews the surface sheet 2 through the fiber gaps in the thickness direction thereof and leaches out as the adhesive 30A on the outer surface 2A of the sheet. The fastener tape 20 made of a polyester film is folded at both longitudinal ends toward the longitudinal center line (not shown) of the diaper 1. One of the folds is a fixing portion 23 in which an outer surface 25 thereof is coated with a synthetic rubber-based second adhesive 24, which is adhered to the outer surface 2A of the surface sheet and the already solidified adhesive 30A. There is. The other part of the folded part is the adhesive part 21, which is temporarily fixed to the inner surface 26 of the fixing part 23 to which the silicone 28 is applied, and can be easily peeled from the inner surface 26. In the vicinity of the free end of the adhesive portion 21, there is a non-adhesive holding portion 22 to which the adhesive 27 is not applied, and if this is held, the adhesive portion 21 can be operated without the fingertip touching the adhesive 27. Thus, the fixing portion 23 not only adheres to the outer surface 2A of the surface sheet via the second adhesive 24, but a part of the first adhesive 30 penetrates the surface sheet 2 in the thickness direction. It also adheres to the existing adhesive 30A. If the second adhesive 24 has good adhesiveness to the first adhesive 30, even if the fibers of the surface sheet 2 are loosened by the force acting on the fastener tape 20, the tape 20 will be diapered. It does not easily come off from 1. Therefore, the user of the diaper 1 can repeatedly attach / detach the adhesive portion 21 in order to check the presence or absence of excrement, etc., with peace of mind. Such fastening of the fastener tape 20 is performed by opening the diaper 1 in the vicinity of the waist side edge in the vicinity of the surface sheet 2 on a surface side sheet different from the surface sheet 2, for example, toward the longitudinal center line of the diaper 1. It can also be used when a non-woven sheet for forming a leakage preventing pocket along the side edge is adhered to the back sheet 3. When the fastener tape 20 is fixed to the back surface sheet 3, a large number of pores are provided in the vicinity of the waist of the back surface sheet 3 and the first adhesive 30 is applied to the outer surface thereof. You should make the transition.

[0012]

[Effect of the device]

 The fixing portion of the fastener tape is adhered to the outer surface of the sheet of either the diaper surface sheet or the back sheet through the second adhesive applied to the fixing portion, and both of these are adhered. It is adhered to the first adhesive which adheres the sheet. Therefore, if the adhesiveness of the second adhesive to the first adhesive is good, the fastener tape will not be easily detached by being fixed to the diaper even if the adhesiveness with the outer surface of the sheet is weak. .

[Brief description of drawings]

FIG. 1 is a perspective view showing a worn state of a diaper according to the present invention.

FIG. 2 is a plan view showing the diaper of FIG. 1 in a developed state.

3 is a view taken along the line XX of FIG.

[Simple explanation of symbols]

 1 Diaper 2 Front Sheet 2A Outer Surface 3 Back Sheet 8 Front Body 10 Back Body 20 Fastener Tape 21 Adhesive Area 23 Sticking Area 24 Second Adhesive 30 First Adhesive

Claims (1)

[Scope of utility model registration request] 1. A disposable diaper having at least a front surface sheet and a back surface sheet, and having a fastener tape extending outwardly from each of the waist peripheral edges thereof. In the vicinity of the side edge, the top sheet and the back sheet are adhered to each other via a first adhesive, and one side in the longitudinal direction of the fastener tape is a fixed area to the diaper, and the opposite side thereof is the above-mentioned side. An adhesive region for detachably fastening a front body and a back body of the diaper, wherein the fixing region is the front sheet or the back sheet through a second adhesive applied to the fixing region. The diaper is characterized in that it is adhered to the outer surface of any one of the sheets, and is also adhered to the first adhesive via the sheet of any one of the sheets.