JP2004298459A - Disposable diaper equipped with post-treatment tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the troublesomeness that a pressure-sensitive adhesive layer of an intermediate part adheres to the hand or the other parts when a post-treatment tape is stretched for disposing a diaper in the post-treatment tape folded in a thrice-folded state. <P>SOLUTION: The post-treatment tape 5 is a narrow belt-like tape fastener composed of a fixed part 6 fixed to the outer face of the diaper, a securing part 8 having the pressure-sensitive adhesive layer on its one side face, and the intermediate part 7 connecting the fixed part 6 and the securing part 8. The fixed part 6 is fixed to the outer face of the diaper in the state where its longitudinal direction is oriented in the vertical direction of the diaper. The fixed part 6, the securing part 8 and the intermediate part 7 are folded in the thrice-folded state so as to mutually pile up in the unused state. The pressure-sensitive adhesive layer 13 of the securing part 8 is peelably stuck to the intermediate part 7, and the intermediate part 7 is peelably stuck to the fixed part 6 by self-adhesive pressure-sensitive adhesive layers 11 and 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disposable diaper provided with a post-treatment tape for disposal on one side of a back body and a front body.
[0002]
[Prior art]
In recent years, disposable disposable diapers for infants and the elderly have become the mainstream, but among these types of disposable diapers, pants-type disposable diapers are designed to be easily disposable at the time of disposal. A so-called post-processing tape is provided in a folded state (see FIG. 1).
[0003]
This post-treatment tape is a state in which the disposable diaper is rolled up at the time of disposal and then stretched out after the disposable diaper is rolled up. Is not released (see FIG. 3). As a structure of the post-processing tape, for example, a structure shown in Patent Document 1 below can be mentioned as a typical example. As shown in FIG. 7, the post-processing tape 40 shown in the document is a tape-shaped fastener in the form of a narrow band, has a fixing adhesive layer 43, and has a fixing portion 40 </ b> A fixed to the outer surface of the diaper; A fixing portion 40B having a connecting portion 41 and an intermediate portion 40C connecting the fixing portion 40B. When not in use, the fixing portion 40A, the fixing portion 40B, and the intermediate portion 40C are folded in three so that they overlap with each other. The adhesive layer 41 of 40B is releasably bonded to the intermediate portion 40C, and the adhesive layer 42 formed on the surface of the intermediate portion 40C on the side of the fixing portion 40A is releasably bonded to the outer surface of the fixing portion 40A. ing.
[0004]
[Patent Document 1]
JP-A-2001-258938
[Problems to be solved by the invention]
However, the pressure-sensitive adhesive layer 41 formed on the fastening portion 40B is an essential pressure-sensitive adhesive layer for fixing the disposable state (rolled state) of the diaper, but the pressure-sensitive adhesive layer 42 formed on the intermediate portion 40C is fixed. Is a pressure-sensitive adhesive layer required only for maintaining the folded state, not for fixing the discarded state, and the pressure-sensitive adhesive layer is used when the post-processing tape 40 is extended. However, there is a problem that it is difficult to work by bonding to hands or other diaper parts.
[0006]
Therefore, a main problem of the present invention is that, in a post-processing tape folded in a three-fold state or the like, when the post-processing tape is stretched for diaper disposal, the pressure-sensitive adhesive layer in the intermediate portion is applied to a hand or another place. An object of the present invention is to provide a disposable diaper provided with a post-treatment tape which eliminates sticking trouble.
[0007]
[Means for Solving the Problems]
As the present invention according to claim 1 for solving the above-mentioned problems, the present invention according to the present invention relates to a post-treatment tape for joining together both side edges of a front body and a rear body, having a trunk opening and a pair of left and right leg openings. In disposable diapers with
The post-treatment tape is a fixing portion fixed to the outer surface of the diaper, a fastening portion having an adhesive layer on one side, and a narrow band-shaped tape including an intermediate portion connecting the fixing portion and the fastening portion. It is a fastener, and in the unused state, the fastening part and the intermediate part except the fixing part are folded in a plurality of folded states, and the adhesive layer of the fastening part is peelably adhered to the lower layer, A disposable diaper provided with a post-treatment tape, wherein the other folded portions are each releasably adhered by a self-adhesive pressure-sensitive adhesive layer.
[0008]
As the present invention according to claim 2, in a disposable diaper having a front body and a rear body joined at both side edges, and having a trunk opening and a pair of left and right leg openings, and a post-processing tape for disposal,
The post-treatment tape is a fixing portion fixed to the outer surface of the diaper, a fastening portion having an adhesive layer on one side, and a narrow band-shaped tape including an intermediate portion connecting the fixing portion and the fastening portion. In the unused state, the fixing portion, the fastening portion, and the middle portion are folded in three so that they overlap each other, and the adhesive layer of the fastening portion is peelably adhered to the middle portion. In addition, there is provided a disposable diaper provided with a post-treatment tape, wherein the intermediate portion is detachably adhered to the fixed portion by a self-adhesive pressure-sensitive adhesive layer.
[0009]
In the present invention as set forth in claims 1 and 2, a self-adhesive adhesive is used as an adhesive for maintaining a folded state of the post-treatment tape when not in use, except for an adhesive layer formed on a fastening portion. Was used. Therefore, the intermediate portion does not exhibit adhesiveness even when touched by the hand during extension, and the intermediate portion does not adhere to other diaper portions, so that the workability is significantly improved.
[0010]
According to a third aspect of the present invention, there is provided a disposable diaper provided with the post-processing tape according to any one of claims 1 and 2, wherein the post-processing tape is fixed to one side of the rear body and the front body of the disposable diaper. Provided.
[0011]
As the present invention according to claim 4, the disposable diaper according to any one of claims 1 to 3, wherein the fixing portion is fixed to an outer surface of the diaper in a state where the longitudinal direction of the post-treatment tape is oriented vertically in the diaper. Is provided.
[0012]
As the present invention according to claim 5, the post-processing tape is configured such that the fixing portion, the fixing portion, and the intermediate portion are formed of one continuous tape without a seam. A disposable diaper with the described post-treatment tape is provided.
[0013]
According to a sixth aspect of the present invention, in the first aspect, the post-processing tape is formed of a joining tape in which the divided pieces forming the fixing part, the fastening part, and the intermediate part are joined. A disposable diaper with the described post-treatment tape is provided.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of the disposable diaper according to the present invention as viewed from the back side, and FIG. 2 is a diagram showing a structure of a post-processing tape 5.
[0015]
First, as shown in FIG. 1 and the like, a disposable diaper is made of cotton between a liquid-permeable top sheet 2 made of non-woven fabric or the like and facing the wearer's skin and a liquid-impermeable back sheet 1 made of polyethylene or the like. A semi-rigid absorbent body 3 mainly composed of pulp-like pulp and provided with absorbent paper or the like as necessary is included therein, and leg opening forming recesses 4a, 4a are respectively formed on both side edges in an expanded state, that is, as a result, substantially. The hourglass-shaped one is folded in the front-rear direction with the middle part in the longitudinal direction as a fold line part, and both sides of the folded front body and back body are joined to each other by seal welding or ultrasonic welding to the upper side. It is manufactured as a pants-type diaper having a trunk opening 4B and a pair of left and right leg openings 4A on both sides.
[0016]
Note that the outer surface of the disposable diaper is not necessarily a liquid-impermeable backsheet, and a body backsheet comprising an inner backsheet nonwoven fabric and an outer backsheet nonwoven fabric is provided outside the liquid-impermeable backsheet 1. The outer surface side can be made of a nonwoven fabric by being provided integrally. This disposable diaper configuration is described, for example, in Japanese Patent Application No. 11-268557. In any case, the disposable diaper made in a substantially hourglass shape in the unfolded state is folded in two in the front-rear direction at the center in the longitudinal direction, and the two sides are sealed or welded to each other with leg openings formed. It is joined by a welding method such as sonic welding, and is molded into a pants type.
[0017]
In such a pants-type disposable paper diaper, as shown in FIG. 1, a post-processing tape 5 for disposal is provided on a back body.
[0018]
As shown in detail in FIG. 2, the post-processing tape 5 includes a fixing portion 6 that is non-peelably adhered to a rear body of the disposable diaper, a fastening portion 8 having an adhesive layer 13 on an inner surface side, It is a strip-shaped tape fastener composed of an intermediate portion 7 connecting the fixing portion 6 and the fastening portion 8, and in the illustrated example, the fixing portion 6, the fastening portion 8, and the intermediate portion 7 are continuous without having a seam. It is composed of one tape. Note that the knob 9 is fixed to the tip of the fastening portion 8 with an adhesive 14 to form a knob, but the knob may be formed by folding the tip twice.
[0019]
As shown in FIG. 1, the post-processing tape 5 is peeled off by the fixing adhesive layer 10 applied to the diaper contact surface while the fixing portion 6 is oriented with the longitudinal direction of the post-processing tape 5 in the vertical direction of the diaper. In an unused state (stored state), the fixing part 6, the fastening part 8, and the intermediate part 7 are folded in a three-fold state so as to overlap each other, as shown in FIG. I have. That is, while being folded at the boundary between the fixing part 6 and the intermediate part 7, and folded at the boundary between the intermediate part 7 and the fastening part 8, it is folded in a three-fold state. The adhesive layer 13 is releasably adhered to the intermediate portion 7, and the intermediate portion 7 is formed by self-adhesive pressure-sensitive adhesive layers 11 and 12 formed on the contact surface between the intermediate portion 7 and the fixing portion 6. Are adhered to the fixing portion 6 in a releasable manner. It is desirable that the outer surface of the intermediate portion 7 of the fixing portion 8 to which the pressure-sensitive adhesive layer 13 is adhered is subjected to a release treatment using silicon or the like.
[0020]
The self-adhesive pressure-sensitive adhesive refers to a pressure-sensitive adhesive that exhibits adhesiveness between adhesives but does not exhibit adhesiveness with other substances, and includes natural rubber, butyl rubber, polyisoprene rubber, acrylic, polyurethane, and polyester-based adhesives. Etc., and it is easy to obtain. According to this self-adhesive pressure-sensitive adhesive, it is possible to keep the intermediate portion 7 adhered to the fixing portion 6 in an unused state, while exhibiting adhesiveness even when the intermediate portion 7 is touched by hand during extension. In addition, since the intermediate portion 7 does not adhere to another diaper portion even when it touches another diaper portion, workability is significantly improved. The application region of the self-adhesive pressure-sensitive adhesive may be substantially the entire contact surface between the intermediate portion 7 and the fixing portion 6 as shown in FIG. 2, but as shown in FIG. It may be provided partially. In this case, it is desirable to provide it on the outer side so that the end does not turn up.
[0021]
As a tape base material of the fixing portion 6, the intermediate portion 7 and the fastening portion 8, a material having sufficient tensile strength and flexibility such as a film, paper, nonwoven fabric, or a laminate thereof is used. Various things can be used. As a raw material of the film or the nonwoven fabric, a polyolefin resin such as polypropylene, polyethylene, and polystyrene, a polyester resin such as polyethylene terephthalate and polybutylene terephthalate, a polyamide resin, and a polyurethane resin can be used. In addition, the knob 9 may be provided with a colored sheet so that the user can recognize at a glance that the knob is a knob, or the corner may be dropped in order to ease contact with the skin.
[0022]
On the other hand, the pressure-sensitive adhesive of the pressure-sensitive adhesive layer 13 formed on the fastening portion 8 is the same as a pressure-sensitive adhesive used in a conventional tape-type paper diaper fastening tape such as a rubber-based pressure-sensitive adhesive or an acrylic-based pressure-sensitive adhesive. Things can be used.
[0023]
When discarding a used disposable diaper, the welded portions on both side edges are torn from the attached state and removed from the body, and then the disposable diaper is folded in half as shown in FIG. If the post-processing tape 5 is wound so that the knob 9 of the post-processing tape 5 is pinched and stretched from the folded state to a linear state, and the rolled paper diaper is wound around as it is, FIG. As shown in (2), the adhesive layer 13 of the fastening portion 8 is fastened to the outer surface of the diaper and fixed in a rounded state.
[0024]
Incidentally, in addition to the above-described workability, advantages of the present invention include efficiency in a production line. For example, in the case of the conventional post-processing tape 40 shown in FIG. 7, the pressure-sensitive adhesive layers are formed on both sides of the front and back surfaces of the tape. Since the pressure-sensitive adhesive is transferred to the reversing roll or the like, a manufacturing defect occurs. On the other hand, in the case of the present invention, the pressure-sensitive adhesive is formed only on one surface side, and the other surface side is provided with a self-adhesive adhesive that does not show adhesiveness to the reversing roll. Become. Therefore, since there is no transfer of the pressure-sensitive adhesive to the reversing roll, it is possible to avoid manufacturing problems, and the pressure-sensitive adhesive and the self-adhesive pressure-sensitive adhesive can be applied in-line.
[0025]
(Other examples)
(1) In the above embodiment, the post-processing tape 5 is provided on the back body, but may be provided on the front body.
[0026]
(2) In the above embodiment, the fixing portion 6, the intermediate portion 7, and the fastening portion 8 are configured by one continuous tape without a seam. However, the fixing portion 6, the fastening portion 8, It is also possible to use a joining tape in which the divided pieces constituting the intermediate portion 7 are joined. Specifically, as shown in FIG. 5, a fixing adhesive layer 10 is provided on the diaper contact surface side, and is adhered to the back of the diaper in a non-peelable manner, and a self-adhesive adhesive is provided on the opposite surface side. A fixing part 6 having an agent layer 11, an intermediate part 7 connected to one end side folded part of the fixing part 6, and having a self-adhesive pressure-sensitive adhesive layer 12 on a contact surface side with the fixing part 6; It is also possible to form a joining tape which is connected to the front-end-side folded portion of the intermediate portion 7 and includes a fastening portion 8 having a peelable adhesive layer 13 on the contact surface side with the intermediate portion 7. .
[0027]
(3) In the above embodiment, the fixing portion 6, the fastening portion 8, and the intermediate portion 7 are folded in three so as to overlap each other. However, as shown in FIG. It is also possible to set the number of folds as described above. In this case, the pressure-sensitive adhesive layer 13 of the fastening portion 8 is releasably adhered to the lower layer, and the other folded portions are releasably adhered by the self-adhesive pressure-sensitive adhesive layers 11 and 12, respectively. What should be done is.
[0028]
【The invention's effect】
As described in detail above, according to the present invention, in the post-processing tape folded in a three-fold state, etc., when the post-processing tape is extended for diaper disposal, the pressure-sensitive adhesive layer in the middle portion may be in a hand or other place. The troublesomeness of sticking can be eliminated.
[Brief description of the drawings]
FIG. 1 is a perspective view of a pants-type disposable paper diaper according to the present invention as viewed from the back side.
FIGS. 2A and 2B show the structure of a post-processing tape 5 according to the present invention, wherein FIG. 2A is a folded state diagram and FIG.
FIGS. 3A and 3B are perspective views showing a procedure (No. 1), and FIG. 3B is a side view showing a procedure (No. 2), showing a procedure of discarding.
4A and 4B show another example of the application pattern of the self-adhesive pressure-sensitive adhesive. FIG. 4A is a folded state diagram, and FIG. 4B is an extended state diagram.
FIG. 5 is a folded state diagram showing another example of the post-processing tape 5;
FIG. 6 is a folded state diagram showing another example of the post-processing tape 5.
7A and 7B show a conventional post-processing tape 40, in which FIG. 7A is a folded state diagram, and FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Liquid impermeable back sheet, 2 ... Liquid permeable top sheet, 3 ... Absorber, 4A ... Leg opening, 4B ... Body opening, 5 ... Post-processing tape, 6 ... Fixed part, 7 ... Middle part, 8: fastening part, 9: knob, 10: fixing adhesive layer, 11 and 12: self-adhesive pressure-sensitive adhesive layer, 13: pressure-sensitive adhesive layer

Claims (6)

In the disposable diaper which joins both side edges of the front body and the back body, has a trunk opening and a pair of left and right leg openings, and has a post-processing tape for disposal,
The post-treatment tape is a fixing portion fixed to the outer surface of the diaper, a fastening portion having an adhesive layer on one side, and a narrow band-shaped tape including an intermediate portion connecting the fixing portion and the fastening portion. It is a fastener, and in the unused state, the fastening part and the intermediate part except the fixing part are folded in a plurality of folded states, and the adhesive layer of the fastening part is peelably adhered to the lower layer, A disposable diaper provided with a post-treatment tape, wherein the other folded portions are each releasably bonded by a self-adhesive pressure-sensitive adhesive layer. In the disposable diaper which joins both side edges of the front body and the back body, has a trunk opening and a pair of left and right leg openings, and has a post-processing tape for disposal,
The post-treatment tape is a fixing portion fixed to the outer surface of the diaper, a fastening portion having an adhesive layer on one side, and a narrow band-shaped tape including an intermediate portion connecting the fixing portion and the fastening portion. In the unused state, the fixing portion, the fastening portion, and the middle portion are folded in three so that they overlap each other, and the adhesive layer of the fastening portion is peelably adhered to the middle portion. A disposable diaper provided with a post-treatment tape, wherein the intermediate portion is detachably adhered to the fixed portion by a self-adhesive pressure-sensitive adhesive layer. The disposable diaper provided with the post-processing tape according to any one of claims 1 and 2, wherein the post-processing tape is fixed to one side of the rear body and the front body of the disposable diaper. The disposable diaper according to any one of claims 1 to 3, wherein the fixing portion is fixed to an outer surface of the diaper with the longitudinal direction of the post-treatment tape being oriented in a vertical direction of the diaper. The disposable provided with the post-processing tape according to any one of claims 1 to 4, wherein the post-processing tape is a single piece of tape in which the fixing portion, the fixing portion, and the intermediate portion are continuous without having a seam. Diapers. The disposable provided with the post-processing tape according to any one of claims 1 to 4, wherein the post-processing tape is configured by a joining tape in which the divided pieces forming the fixing part, the fastening part, and the intermediate part are joined. Diapers.

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