JPH1128111A - Fastener tape with hook and disposable diaper with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively and simply obtain a fastener tape with a hook structured so as to not to expose a hook material. SOLUTION: A tape-like supporting body 11 integrally molded to provided a hook-like locking part 13 at one end is produced from a thermoplastic resin such as polyethylene. An adhesive layer 12 is formed on the same surface side as the part 13 and the remaining tip part of the body 11. In addition, at the time of folding the body 11 so that the part 13 is made to be an inner surface, a part to be locked 15 for locking the part 13 is made to be constituted of the adhesive, etc., on the surface opposed to the part 13. The fastener tape with a hook 10 is used by folding the body 11 to make a Z-form and is constituted of the first leg part A folded so that the part 13 is made to be an inner surface, the second leg part B folded so that the layer 12 is made to be an outer surface and the third leg part C between the leg parts A and B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener tape with a hook and a disposable diaper provided with the fastener tape with a hook. More specifically, the present invention relates to a structure of a fastener tape with a hook used for packaging disposable diapers, bags, boxes, and the like.

[0002]

2. Description of the Related Art Conventionally, as a fixing tape, for example, a kraft tape or an OP for fixing a cardboard box or the like has been used.
Tapes based on P (stretched polypropylene) films are used, and various fastener tapes are used for mounting disposable diapers. For these fixing tapes, mainly an adhesive is widely used.

However, in the case of a fixing tape using such an adhesive, the adhesive comes into contact with an adherend such as a cardboard box at the time of use. There is a problem in that it remains on the wearer and soils the adherend.

In order to solve such a problem, attention has been paid to a fixing tape using a hook material, and various types of fastener tapes with hooks have been developed.

[0005] Fig. 10 shows a conventional fastener tape 100 with a hook used for a disposable diaper 1.
FIG.
Reference numeral 0 denotes an adhesive layer 112 provided on one end of a support 111 made of polypropylene, polyethylene, or the like, and a hook material 113 fixed to the other end with an adhesive 114 or the like. The fastener tape 100 with hooks is provided on the front surface 1a of the disposable diaper 1 when the disposable diaper 1 is attached when the adhesive layer 112 is fixed to the waist portions 1b on both sides of the disposable diaper 1 as shown in FIG. The hook member 2a of the frontal portion 2 is locked.

[0006] However, when the disposable diaper 1 is mounted, the hook material 1 of the fastener tape 100 with hook is required.
13 was not locked anywhere until it was locked to the frontal part 2 and was sometimes in a free state. For this reason, there has been a problem that the hook member 113 comes into contact with the skin of a wearer such as an infant or a wearer such as a parent at the time of wearing, causing discomfort or causing a fine scratch on the skin. Further, the hook member 113 is locked on the disposable diaper 1 itself or sticks to the wearer or the clothes of the wearer, which causes a problem that it is very difficult to handle.

In order to prevent such a problem, a hook material 1
It is also conceivable to separately provide a locked member (not shown) for locking the lock 13 on the disposable diaper 1. In this case, however, two parts of the frontal portion 2 and the locked member are separately manufactured. In addition, there is a problem that the locked member must be provided at an appropriate position, which complicates the manufacturing process and increases the manufacturing cost.

The present invention has been made in view of the above-mentioned drawbacks of the conventional example, and has as its object to provide a hook-and-loop fastener tape having a structure in which the hook member is not exposed, at a low cost and simply.

[0009]

According to the present invention, there is provided a fastener tape with hooks having a hook-shaped engaging portion at one end of a tape-shaped support and an adhesive layer at the remaining end. A first leg folded with the locking portion inside, a second leg folded with the pressure-sensitive adhesive layer outside, and a portion between the first leg and the second leg. The support is folded in a Z-shape by the third leg.

In this case, it is preferable that a locked portion for locking the hook-shaped locking portion is provided on the third leg portion. For example, the locked portion may be formed of an adhesive layer or a hook-shaped portion. It can be composed of a locking member.

Preferably, the hook-shaped system stopper is integrally formed with the support on the surface of one end in the width direction of a sheet-like base material mainly composed of a thermoplastic synthetic resin. Conveniently, the form stop is integrally formed with the support.

It is preferable that the second leg and the third leg are temporarily attached by temporary attaching means, and that at least a portion extending from an outer surface of the first leg to an outer surface of the third leg. It is preferable to provide a release treatment layer at the bent portion.

[0013] The disposable diaper according to the present invention is characterized in that the above-mentioned fastener tape with hook according to the present invention is provided.

[0014]

FIG. 1 is a side view showing an embodiment of a fastener tape with hooks 10 according to the present invention, FIG. 2 is a side view showing an expanded state of the fastener tape with hooks 10 above, and FIG. Is an explanatory view showing a part of a manufacturing process of the fastener tape with hooks 10, FIG. 4 is a schematic perspective view showing a disposable diaper 1 having the fastener tape with hooks 10, and FIG. 5 is a fastener with hooks according to the present invention. FIG. 6 is a side view showing another embodiment of the tape 10, FIG. 6 is a side view showing an expanded state of the fastener tape 10, and FIG. 7 is a fastener tape 10 with a hook according to the present invention.
FIG. 8 is an explanatory view showing another method of using the fastener tape 10 with hooks. Hereinafter, the present invention will be described in detail with reference to the drawings.

Fastener tape with hook 10 shown in FIG.
The hook-shaped engaging portion 13 is integrally formed at one end of a tape-shaped support 11, and the adhesive layer 12 is formed at the remaining end. The hook-shaped locking portion 13 and the adhesive layer 12 are formed on the same surface side of the support 11. The support body 11 on which the hook-shaped locking portions 13 and the adhesive layer 12 are formed is folded with the hook-shaped locking portions 13 inside, from the end side where the hook-shaped locking portions 13 are formed, Further, the adhesive layer 12 is folded from the end side on which the adhesive layer 12 is formed, with the adhesive layer 12 on the outside, and folded in a Z-shape. That is, the fastener tape 10 with hooks includes a first leg A folded with the hook-shaped locking portion 13 inside, a second leg B folded with the adhesive layer 12 outside, The third leg C between the first leg A and the second leg B forms a Z-shape in side view.

The material of the support 11 is not particularly limited. For example, a polyolefin-based plastic made of a random polypropylene, a low-density polyethylene, a linear low-density polyethylene, or a blend of two or more kinds is used. A film is preferable, and a film obtained by appropriately mixing a styrene-based, polyester-based, or urethane-based elastomer can also be used.

Further, from the viewpoint of integrally forming the hook-shaped engaging portion 13 with the support 11 as described below,
It is particularly preferable to use a thermoplastic resin. As the thermoplastic resin, in addition to the above-described polyethylene, polypropylene and blends thereof, polyethylene terephthalate, nylon, ethylene-propylene copolymer,
Examples thereof include an ethylene-vinyl acetate copolymer.

The disposable diaper 1 is also used as the pressure-sensitive adhesive layer 12.
There is no particular limitation as long as it can be adhered or adhered to the adherend, and various kinds of adhesives used for ordinary tape materials can be used. For example, a rubber-based adhesive or an acrylic-based adhesive can be used. No.

Further, the fastener tape with hooks 1
At 0, the second leg B and the third leg C are temporarily attached by the temporary attaching means 14. By this temporary attachment means 14, the second leg B and the third leg C are firmly held in a folded state, but by appropriately selecting the material of the support 11, a Z-shape can be obtained. If the shape can be maintained, it is not necessary to use the temporary attachment means 14.

As the temporary attaching means 14, various temporary attaching means such as an adhesive or a hook-shaped stopper can be used. As the pressure-sensitive adhesive, various pressure-sensitive adhesives such as a rubber-based pressure-sensitive adhesive and an acrylic-based pressure-sensitive adhesive can be used. The third leg C must be set to such an adhesive strength that the third leg C is not easily peeled off from the second leg B during storage or the like. Further, the second leg portion B and the third leg portion C may be temporarily attached by heat sealing, or a hot-melt type, or a melt-blown or fibrous pressure-sensitive adhesive or adhesive may be used. .
Further, the opposing surfaces of the second leg B and the third leg C may be embossed, and the two may be temporarily attached by pressing.

The inner surface of the third leg C, that is, the support 11
A locked portion 15 for locking the hook-shaped locking portion 13 of the first leg A is provided on a surface facing the inner surface of the first leg A when the is folded. I have. The locked part 1
Numeral 5 is formed, for example, by an adhesive layer 15a over the entire surface facing the hook-shaped locking portion 13. The locked portion 15 is for locking the hook-shaped locking portion 13 and temporarily attaching the hook-shaped locking portion 13. It is sufficient that the locked portion 15 is provided to such an extent that the first leg A is not easily opened. In addition, the hook-shaped locking portion 13
The hook-shaped locking member 15b or the loop-shaped locking member may be formed as described below, as long as the hook-shaped locking member 15b can be locked. Alternatively, by selecting the material of the support 11, the hook-shaped locking portion 13 can be provided without providing the locked portion 15.
May be locked.

The pressure-sensitive adhesive of the pressure-sensitive adhesive layer 15a is not particularly limited as long as the hook-shaped locking portion 13 can be easily peeled off or attached, such as a rubber-based pressure-sensitive adhesive or an acrylic pressure-sensitive adhesive. However, it is desirable that the adhesive does not adhere to the hook-shaped locking portion 13 when peeled off.

A release treatment layer 16 is provided on the bent portion 11a from the outer surface of the first leg A to the outer surface of the third leg C, that is, the surface facing the inner surface of the second leg B. Is provided. The release processing layer 16 flows out while the adhesive of the adhesive layer 12 formed on the second leg B is folded and stored, and the second leg B and the third leg are discharged. C to prevent it from sticking to at least the first leg A and the third leg C.
1a is preferably provided. The release treatment layer 16 includes
Various release agents such as a silicone release agent and a non-silicone release agent can be used. Of course, depending on the pressure-sensitive adhesive of the pressure-sensitive adhesive layer 12, it is not necessary to perform a release treatment, and the pressure-sensitive adhesive layer 12 may be provided on the entire outer surface of the first leg A to the entire outer surface of the third leg C. In this case, 50% of the outer surface of the third leg C is secured in order to secure an area where the temporary attaching means 14 is provided.
It is preferable to provide them in the following regions.

The hook-shaped fastener tape 10 can be manufactured, for example, as follows. FIGS. 3 (a) and 3 (b)
It is explanatory drawing which shows a part of manufacturing method of the said hook-shaped fastener tape 10, and shows the case where the support body 11 with which the hook-shaped locking part 13 is integrally formed is produced. First, FIG.
As shown in (a), the above-mentioned thermoplastic synthetic resin is melted by an extruder, extruded from a die 91, and taken off and cooled by two nip rolls 92 and 93 serving as take-off cooling rolls. 11 is formed. At this time, the thickness of the support 11 is 50 to 50 due to the balance between strength and flexibility.
300 μm is preferred.

Of the two nip rolls 92 and 93,
When a fine hole 94 is machined in one nip roll 92 and the support 11 is formed by the two nip rolls 92 and 93, the molten resin enters the inside of the hole 94, thereby forming a surface of the support 11. The hook-shaped locking portion 13 is integrally formed.

At this time, depending on the processing shape and the processing method of the fine hole 94 of the nip roll, the case where the complete male hook-shaped engaging portion 13 is formed and the case where the straight protrusion is formed by the hole 94 of the nip roll. In some cases, the protrusion is formed on the hook-shaped locking portion 13 by bending the tip of the projection or forming a large-diameter head.

Next, as shown in FIG. 3B, the support 11 integrally formed with the hook-shaped locking portions 13 is guided in a bent shape by a pair of guide rollers 95 and 96 while traveling in the longitudinal direction. Then, an adhesive layer 12 is formed by applying an adhesive coating die 97 to an end of the support 11 which is bent along the guide roller 95, at an end opposite to the end provided with the hook-shaped locking portion 13. I do. Further, the locked part 1 is formed by another adhesive coating die 98.
The pressure-sensitive adhesive layer 15a to be 5 is formed by coating.

Then, as shown in FIG.
After forming the release treatment layer 16 and the temporary attachment means 14 at a predetermined position on the surface opposite to the surface on which the hook-shaped locking portions 13 and the like are provided, the release processing layer 16 and the temporary attaching means 14 are folded at a predetermined position into a Z-shape, and the present invention A fastener tape 10 is manufactured.

The hook-and-loop fastener tape 10 thus manufactured is fixed to the disposable diaper 1, for example, as shown in FIG. When not in use, it is stored compactly in a folded state,
Is sandwiched between the first leg A and the third leg C. For this reason, the hook-shaped engaging portion 13 does not touch the skin or clothes of the non-wearer or the wearer until the hook-shaped engagement portion 13 is finally fixed to the frontal portion 2 when the wearer wears the infant. Further, since the hook-shaped locking portion 13 is temporarily attached, the hook-shaped locking portion 13 can be easily attached by pulling the end of the support 11 on the side where the hook-shaped locking portion 13 is provided. Can be withdrawn. Furthermore, even when pulled out, the locked portion 15 and the hook-shaped locking portion 13 are located on the same surface, so that the locked portion 15 is not exposed to the outer surface and the contact with the locked portion 15 is also prevented. be able to.

Next, in the fastener tape with hook 10 shown in FIGS. 5 and 6, the locked portion 15 is constituted by a hook-shaped locking member 15b. The hook-shaped locking member 15b is formed integrally with the support 11, and is designed in such a shape that the hook-shaped locking portion 13 and the hook-shaped locking member 15b can be locked to each other. As described above, the hook-shaped locking member 15b has a fine hole formed in a predetermined position to be the locked portion 15, though not shown, similarly to the formation of the hook-shaped locking portion 13. By using the nip roll, the support 11 can be easily formed integrally. Further, there is no need to provide an interval between the hook-shaped locking portion 13 and the locked portion 15, and the hook-shaped locking portion 13 and the locked portion 15 may be formed continuously.

As described above, by folding the support body 11 on which the hook-shaped locking portions 13 are formed into a Z-shape, the hook-shaped locking portions 13 can be covered and hidden inside, and are exposed until they are fixed. Never. In particular, hook-shaped locking portion 1
By providing the locked portion 15 for locking the support body 11 on which the 3 is formed, the hook-shaped locking portion 13 and the locked portion 15 can be locked, and the Z-shaped shape can be firmly held. In addition,
It is conceivable that the first leg A and the third leg C are temporarily attached by different temporary attachment means and are held in a Z-shape. In this case, a place for providing the temporary attachment means is considered. The hooked fastener tape 10 cannot be folded compactly, and the hook-shaped locking portion 13 cannot be formed sufficiently on the inner surface of the first leg portion A. Furthermore, when a thermoplastic synthetic resin is used, it is difficult to maintain the Z-shape, and the hook-shaped locking portion 13 cannot be locked. For this reason, the locked portion 15 for locking the hook-shaped locking portion 13 is useful.

In particular, by forming the hook-shaped locking portion 13 integrally with the support 11 using a thermoplastic synthetic resin,
The manufacturing method is simplified, and the hook-shaped locking member 15b
The manufacturing method can be further simplified by integrally forming the locked portion 15 made of. Of course, the hook-shaped locking portions 13 can be separately manufactured and bonded to the support 11.

In the above-described embodiment, the case where the fastener tape 10 with hooks of the present invention is used for the disposable diaper 1 has been described. In addition, as shown in FIG. For example, as shown in FIG. 8, it can be used to prevent the upper end opening of the handbag 31 from being opened. Of course, the present invention is not limited to these usage methods, and it goes without saying that there are various usage forms as fastener tapes for fixing.

[0034]

EXAMPLE Next, a fastener tape with a hook according to an embodiment of the present invention and a conventional fastener tape with a hook shown in FIG. 10 were produced, and the effects of the present invention were confirmed.

(Example) A support having a hook-shaped engaging portion integrally formed at one end was obtained by an extrusion method using a blend of polyethylene / polypropylene. A rubber-based pressure-sensitive adhesive was applied to the remaining end of the support to form a pressure-sensitive adhesive layer having a thickness of 40 μm. Further, a rubber-based adhesive is applied to a position of the support opposite to the hook-shaped locking portion, and a film thickness of 10 μm is applied.
Thus, a locked portion composed of a m-th adhesive layer was formed. Then, as shown in FIG. 1, it was folded in a Z-shape to obtain a fastener tape with hooks according to an embodiment of the present invention.

COMPARATIVE EXAMPLE In the same manner as in the Example, a support having a hook-shaped engaging portion integrally formed at one end was obtained by extrusion using a blend of polyethylene / polypropylene. A rubber-based pressure-sensitive adhesive was applied to the remaining end of the support to form a pressure-sensitive adhesive layer having a thickness of 40 μm, thereby obtaining a fastener tape with a hook of a comparative example.

(Evaluation Test) The fastener tapes with hooks of the examples and comparative examples obtained above were attached to the waist portions on both sides of the disposable diaper, and they were actually used by 40 monitors. The evaluation was made for ease of stopping on the skin, feeling of anxiety about whether the hook-shaped engagement portion comes into contact with the skin, and overall evaluation. Table 1 shows the results. In addition, in the table, when more than 30 persons out of 40 answered that it was good, it is ○, when 10 or more persons out of 40 answered good, it is Δ, and when less than 10 out of 40 persons, When a person answered that it was good, it was represented by x.

[0038]

[Table 1]

As can be seen from Table 1, the fastener tapes with hooks of the examples have higher evaluations than the fastener tapes with hooks of the comparative example in terms of ease of use, and particularly, the contact of the hook material with the skin. I feel less anxious about
Further, although not shown in the table, it was firmly held in a state of being folded in a Z-shape, and the adhesive of the locked portion did not adhere to the hook-shaped locking portion.

[0040]

According to the fastener tape with hooks of the present invention, the hook-shaped fastener has a hook-shaped engaging portion at one end and an adhesive layer at the remaining end. A first leg folded inside with a portion inside, a second leg folded with the pressure-sensitive adhesive layer outside, and a third leg between the first leg and the second leg. The support is Z
Since it is characterized in that it is folded in the shape of a letter, the hook-shaped locking portion is held in a state of being hidden on the inner surface side. For this reason, even when provided on an adherend such as a disposable diaper, the hook-shaped engaging portion is not exposed to the outside, and may come into contact with the skin surface or may be engaged with something other than the adherend such as clothing. There is no.

In particular, by providing a locked portion for locking the hook-shaped locking portion on the third leg, the first leg is carelessly irrespective of the material of the support. The third portion and the third leg can be prevented from being opened, and the hook-shaped locking portion can be reliably prevented from being exposed.

Further, the hook-shaped locking portion can be integrally formed with the support on the surface of one end in the width direction of the sheet-like base material mainly composed of a thermoplastic synthetic resin. The hooked fastener tape according to the present invention can be obtained by the method.

Further, by forming the hook-shaped locking member, which is the locked portion, integrally with the support, it is possible to more easily obtain the fastener tape with the hook provided with the locked portion.

Further, by temporarily attaching the second leg and the third leg by temporary attaching means, the second leg and the third leg are held in a Z-shape. Prevents inadvertent opening.

Further, a release treatment layer is provided on at least a bent portion from the outer surface of the first leg to the outer surface of the third leg, so that the release treatment layer is provided on the outer surface of the second leg. Even if the adhesive flows out of the adhesive layer, the second leg and the third leg can be easily opened.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a fastener tape with hooks according to the present invention.

FIG. 2 is a side view showing a state where the fastener tape with a hook is stretched.

FIG. 3 is an explanatory view showing a part of a manufacturing process of the fastener tape with hooks according to the first embodiment.

FIG. 4 is a schematic perspective view showing a disposable diaper provided with the above fastener tape with a hook.

FIG. 5 is a side view showing another embodiment of the fastener tape with hooks according to the present invention.

FIG. 6 is a side view showing an extended state of the fastener tape with hooks.

FIG. 7 is an explanatory view showing another method of using the fastener tape with hooks according to the present invention.

FIG. 8 is an explanatory view showing still another method of using the fastener tape with hooks according to the present invention.

FIG. 9 is a side view of a conventional fastener tape with hooks.

FIG. 10 is a schematic perspective view of a disposable diaper provided with the above fastener tape with hooks.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Fastener tape with a hook according to the present invention 11 Support 12 Adhesive layer 13 Hook-shaped locking portion 14 Temporary attachment means 15 Locked portion 15a Adhesive layer to be locked portion 15b Hook shape to be locked portion Member 16 Release treatment layer

Claims (9)

[Claims] 1. A first tape-shaped support having a hook-shaped locking portion at one end and an adhesive layer at the remaining end, wherein the first portion is folded with the hook-shaped locking portion inside. The support is Z-shaped by a leg, a second leg folded with the pressure-sensitive adhesive layer outside, and a third leg between the first leg and the second leg. Fastener tape with hooks characterized by being folded into a shape. 2. The hook-and-loop fastener tape according to claim 1, wherein a locked portion for locking the hook-shaped locking portion is provided on the third leg portion. 3. The hook-and-loop fastener tape according to claim 2, wherein the locked portion is an adhesive layer. 4. The fastener tape with hook according to claim 2, wherein the locked portion is a hook-shaped locking member. 5. The hook-shaped engaging portion is formed integrally with the support on the surface of one end in the width direction of a sheet-shaped base material mainly composed of a thermoplastic synthetic resin. 4. The fastener tape with a hook according to 4. 6. The fastener tape with hook according to claim 5, wherein the hook-shaped locking member as the locked portion is formed integrally with the support. 7. The fastener tape with a hook according to claim 1, wherein said second leg and said third leg are temporarily attached by temporary attaching means. 8. A release treatment layer is provided at least at a bent portion from an outer surface of the first leg portion to an outer surface of the third leg portion.
The fastener tape with a hook according to 4, 5, 6, or 7. 9. A disposable diaper provided with the fastener tape with a hook according to claim 1, 2, 3, 4, 5, 6, 7, or 8.