Fastening structure for wearing article

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a fastening structure for application to worn articles such as disposable diapers and diaper covers.

【0002】

[Conventional technology]

Conventionally, a tape fastener composed of a hook member and a loop member, which are generally known by trade names such as magic tape and velcro tape, has been used as a fastening structure for this kind of worn article. In this fastener, when the hook member and the loop member are overlapped on top of each other, the hooks and loops that stand up substantially vertically are caught on each other and mechanically engage with each other.

【0003】

5 and 6 are side views showing an engaged state between the hook 17 and the loop 25 of each of the hook member 13 and the loop member 14. In FIG. 5, the hook member 13 is pressed against the loop member 14 in the direction of arrow A to engage with the loop member 14, and is disengaged when pulled in the vertical direction indicated by arrow B. In FIG. 6, both members 13 and 14 engaged in FIG. 5 are pulled horizontally in the directions of arrows C and D, and the hook 17 and the loop 25 are engaged with each other and are in a tense state. In this case, most of the hooks 17 are caught from the side with respect to the loop 25, and the hook member 13 does not easily separate from the loop member 14. However, in the engaged state in which the hook 17 is simply pushed between the loops 25 as shown in FIG. 5, the number of hooks 17 caught on the loop 25 is small, and the hook member 13 moves upward with respect to the loop member 14. When pulled, it detaches relatively easily.

【0004】

Regarding such a fastening structure, Japanese Patent Application Laid-Open No. 4-276251 teaches that if the loop member is intermittently joined to the worn article, most of the hooks are likely to be caught in the loop when the hook member is pulled sideways. doing.

【0005】

[Problems to be Solved by the Invention]

In the worn article, a vertical force that causes the hook member to separate from the loop member may inadvertently act on the engaged hook member and the loop member, and the hook member may come off from the loop member. To avoid such a situation, while wearing the article, even if the hook member moves in the direction perpendicular to the loop member, their engagement cannot be easily disengaged, and the article is removed from the body. It is desirable to realize an engaged state of both members so that the hook member can be pulled strongly in the vertical direction when desired. Japanese Patent Application Laid-Open No. 4-276251 teaches a means for strongly engaging both members when the hook member moves in the horizontal direction with respect to the loop member. It does not teach the means to strengthen the case.

【0006】

Therefore, an object of the present invention is to prevent the hook member from being easily separated from the loop member even if the hook member moves so as to be vertically separated from the loop member in the fastening structure of the worn article. ing.

【0007】

[Means for solving problems]

In order to solve the above-mentioned problems, in the present invention, the hook member and the loop member are disengaged from each other, and the engaged hook member grips one end portion thereof and sequentially disengages the hook member toward the opposite end portion. It is premised on the fastening structure of worn items that can be worn.

【0008】

Under such a premise, the hook member is composed of a base sheet and a large number of hooks rising from the surface of the base sheet, and the base sheet has a joint portion and a non-joint portion with respect to the worn article on the back surface thereof. The non-joint portion is biased toward the one end portion of the hook member, is formed over the entire width of the base sheet orthogonal to the direction in which the detachment proceeds, and the hook stands up on the surface corresponding to the non-joint portion. What is being done is a feature of this invention.

【0009】

[Example]

The details of the fastening structure of the worn article according to the present invention will be described below with reference to the accompanying drawings, taking a disposable diaper as the worn article as an example.

【0010】

The disposable diaper 1 shown in the perspective view in FIG. 1 is composed of a liquid-permeable front sheet 2, an impermeable back sheet 3, and a liquid-absorbing core (not shown) interposed between the two sheets 2 and 3. The front-back longitudinal direction is composed of a front waist circumference area 6, a rear waist circumference area 7, and an inseam area 8 located between these two areas 6,7. Tape fasteners 10 extend from the left and right side edges of the rear torso circumference area 7, and a fastening area 11 extending in the circumferential direction is formed on the outer surface of the back surface sheet 3 in the front torso circumference area 6. The fastener 10 is composed of a tape 12 and a hook member 13 joined to the inner surface of the tape 12, and the fastening region 11 is formed by joining the loop member 14 to the back surface sheet 3. These hook member 13 and loop member 14 are known by trade names such as magic tape and velcro tape, and when the hook member 13 is pressed against the loop member 14, they fasten to each other so as to be detachable from each other, and the diaper 1 is put on. Can be worn. To remove the worn diaper 1, the outer end portion 12B described later of the tape 12 is grasped, and the hook member 13 is sequentially detached from the loop member 14 from the outer end portion 12B toward the inner end portion 12A on the opposite side. Just let me do it.

【0011】

FIG. 2 is a partially fractured perspective view of FIG. 1 in the direction of arrow line II-II. The fastener 10 is used when the inner end portion 12A of the tape 12 is fixed to the outer surface of the back surface sheet 3 so as not to be peeled off via the hot melt adhesive 15, and the outer end portion 12B of the tape 12 is used to separate the fastener 10. It is a holding area. The hook member 13 joined to the inner surface of the tape 12 between the inner end portion 12A and the outer end portion 12B is composed of a base sheet 16 and a hook 17 that rises vertically from the sheet 16, and the base sheet 16 is formed of a base sheet 16. The remaining area 20 excluding the outer edge area 18 (see also FIG. 1), which is defined by the length W and extends over the entire width of the sheet 16, is non-peelably bonded to the tape 12 via the hot melt adhesive 21. There is. The outer edge region 18 is a non-bonded region with respect to the tape 12. The hooks 17 are arranged in a row at a ratio of 2 to 20 pieces / 5 mm, more preferably 5 to 15 pieces / 5 mm in the length direction and the width direction of the base sheet 16, and the width is in the outer end region 18. There are 2 to 20 rows extending in the direction. At the side edges of the diaper 1, the front and back sheets 2 and 3 are joined via a hot melt adhesive 22.

【0012】

FIG. 3 is a side view similar to FIG. 5 when the hook member 13 is pressed against the loop member 14 from the vertical direction and joined to the disposable diaper 1. The number of hooks 17 that are substantially hooked on the loops 25 is relatively small because the large number of hooks 17 that stand vertically remain pushed between the large number of loops 25 that stand generally vertically.

【0013】

FIG. 4 is a schematic drawing when the tape fastener 10 of FIG. 3 moves upward in the direction perpendicular to the loop member 14. In the fastener 10, when the tape 12 moves upward, the hook 17 also moves vertically in the joint area 20 with respect to the tape 12 in the hook member 13, and relatively easily comes out of the loop 25. On the other hand, in the outer end region 18 (non-joining region) of the hook member 13, the hook 17 is tilted and easily caught from the side with respect to the loop 25 to prevent the hook member 13 from being separated from the loop member 14. Of course, in the base sheet 16, the number of rows of hooks 17 on the surface corresponding to the outer end region 18 can be selected from 2 to 20 rows, so that the tape fastener 10 can be positively separated from the fastening region 11. It won't be difficult.

【0014】

In addition to the exemplary disposable diapers, the articles worn in the present invention include diaper covers, sanitary napkins, bandages, and clothing in general. In the hook member 13 applied to these worn articles, the rigidity of the base sheet 16 by the Garley method is preferably 0.1 g · cm or less. The hook member 13 can be attached directly to a required part of the article in addition to being attached to the article to be worn via the tape 12. In order to join the constituent members of the diaper 1 including the hook member 13 and the loop member 14, it is possible to use a welding technique for a heat-meltable material in addition to an adhesive such as a hot melt adhesive having the required flexibility. it can.

【0015】

[Effect of the invention]

In the fastening structure according to the present invention, a non-joining area is formed at the tip of the hook member that separates from the loop member with respect to the other party to join the member, and the number of hook rows at the tip is set to 2 to 20. Therefore, even if the hook member moves so as to be vertically separated from the loop member with which it is engaged, the hook member does not easily separate from the loop member.

[Simple explanation of drawings]

[Figure 1]

Perspective view of disposable diapers.

[Figure 2]

II-II line arrow view of Fig. 1.

[Fig. 3]

Side view of the engaged member and the loop member.

[Fig. 4]

The side view of the hook member when it separates from a loop member.

[Fig. 5]

A side view of a hook member and a loop member that overlap in the vertical direction.

[Fig. 6]

The side view when the hook member and the loop member of FIG. 5 are pulled in the left-right direction.

[Explanation of symbols]

1 Items to wear (disposable diapers) 13 Hook member 14 Loop member 16 base sheet 17 hook 18 Non-junction area 20 junction area