JPH05285008A - Tape for fastener - Google Patents

Abstract

PURPOSE:To mitigate a stimulus of a hook to the skin by providing a buffer material having the top located near the head top of the hook part and the leg extending downward from the top to abut against the surface of a tape part on the surface of the tape. CONSTITUTION:A tape for a fastener is composed of a tape member 4 for the fastener consisting of the tape part 2 and a plurality of hook parts 3 erected on the surface of the tape part and a buffer sheet 7 having through holes 5, legs 6 of a tubular rib structure, etc. This buffer sheet 7 is attached to the tape member 4 for the fastener to cover the surface thereof by inserting the hook part 3 through the through hole 5 from the back surface 13 side and engaging the leg part 6 with the hook part 3. The planar top 14 of the surface 12 of the buffer sheet 7 is located on the height near the top 16 of the hook part head and made relatively flexible and liable to be deformably compressed compared with the hook part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener tape having a plurality of hook portions which can be locked to a locked member having a plurality of loops.

[0002]

2. Description of the Related Art For the fastener tape of this kind which has been widely used conventionally for clothes, personal items and other daily necessities, some techniques have been disclosed regarding its manufacturing method. For example, there is a technique in which a thermoplastic synthetic resin such as polypropylene is extrusion-molded, and a rib structure portion integrally formed with the tape portion is subjected to treatments such as cutting and cutting to form a hook portion on the surface of the tape portion. -250201, 2-5947, and 2-17006. Further, Japanese Patent Publications No. 52-44253 and 57-12603 disclose a technique of forming a hook portion by laterally cutting a loop of a monofilament made of a thermoplastic synthetic resin provided on the surface of the tape portion.

[0003]

When the hook portion of the fastener tape obtained by these techniques touches the skin, it may give a rough and unpleasant sensation, or may give an unpleasant stimulus such as piercing. Especially in the technology of forming the hook by cutting and cutting the rib structure part by extrusion molding, the cut and cut part may be a sharp cut, and such a cut is locked to the loop on the other side. While it has the advantage of being easy, it has the problem of strong unpleasant stimuli when touching the skin. In order to solve such a problem, U.S. Pat. No. 4,846,815 discloses a technique in which the crown of the hook is rounded by a melting process, and Japanese Patent Application Laid-Open No. 2-5947 discloses a hook in which the hook is formed depending on the shape of a mold. Discloses a technique for giving the head a roundness. Although these techniques enable the touch of the hook to be softened, the thick hook formed by extrusion molding or the like generally has high rigidity, and it is difficult to eliminate the rough and unpleasant feel when touching the skin.

Therefore, when such a fastener tape is used for clothing such as underwear and disposable diapers and diaper covers for infants, there is a problem that flexible skin may irritate people.

In view of the above, the present invention has an object to solve the above-mentioned conventional problems by arranging a cushioning material between the hook portions in a fastener tape having hook portions to soften the stimulation of the hook portions against the skin. There is.

[0006]

Means for Solving the Problems The gist of the present invention to solve the above problems is as follows.

The present invention is premised on a fastener tape having a tape portion and a plurality of hook portions standing on the surface of the tape portion, the hook portions being detachably engaged with a member to be engaged. I have to.

Under such a premise, the hook portion has a top portion which is located near an apex portion of the hook portion with an arbitrary number of hook portions separated from each other, and a leg portion which extends downward from the top portion and abuts on the surface of the tape portion. A fastener tape is formed by providing a cushioning material, which is relatively softer and more easily compressed and deformed, on the surface of the tape portion. By pressing this fastener tape against the locked member, it is possible to lock without damaging the cushioning material,
It is a feature of the present invention that it is possible to relieve the irritation to the skin by the hook portion when pressed against the skin.

In a preferred embodiment of the present invention, the cushioning material is a sheet material, and the sheet material has such a size that a top having front and back surfaces and at least one hook can be inserted. Through hole provided on the top of the
And a leg portion extending downward from the back surface. The hook portion is inserted into the through hole from the back surface, and the surface of the tape portion is covered with this sheet material.

The present invention also includes a technique of covering the surface of the tape portion with a foamed plastic sheet which is relatively soft and easily deformed by compression so as to form a fastener tape.

[0011]

[Function] With the fastener tape configured as described above,
Since the top of the cushioning material such as a cushioning sheet that is flexible and easily compressed and deformed is located in the gap between the hooks near the top of the hook, when the skin comes into contact with this tape, the top of the cushioning material first comes into contact with the skin. , Stimulates piercing by the hook part and softens the rough feeling when contacting the skin. The cushioning sheet can be made of non-woven fabric or the like so as to be relatively softer and more easily compressed and deformed than the hook portion. When the fastener tape is pressed against the locked member, the leg portion is deformed to expose the hook portion, and the fastener tape is easily locked to the locked member. Since the legs can be elastically restored after deformation, the function of the cushioning sheet is not impaired even if the fastener tape is repeatedly used.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a fastener tape 1 according to the present invention in a cutaway manner. The fastener tape 1 is composed of a fastener tape member 4 including a tape portion 2 and a plurality of hook portions 3 standing upright on the surface thereof, and a cushioning sheet 7 having a through hole 5 and leg portions 6 having a tubular rib structure. The cushioning sheet 7 covers the front surface of the fastener tape member 4 by inserting the hook portion 3 into the through hole 5 from the back surface 13 side and engaging the leg portion 6 and the hook portion 3 with each other. Is wearing like.

FIG. 2 is a sectional view taken along line II-II of FIG. In the fastener tape member 4, the hook portion 3 has a T-shaped cross-section, and both wings 9 of the crown 16 of the fastener portion 3 are releasably locked to a loop (not shown) of a locked member, whereby the fastener is formed. Tape 1 functions as a fastener. The space between the hook portions 3 adjacent to each other is the gap 1
1, the loop of the locked member locks on both wings 9 after at least its tip portion has entered this gap 11.
The back surface 10 of the fastener tape member 4 is used as an attachment surface for attaching the member 4. The cushioning sheet 7 has a front surface 12 and a back surface 13, and has a planar top portion 14 that substantially fills the gap 11, leg portions 6 that extend downward along the periphery of the through hole 15 that is surrounded by the top portion 14, and the like. ing. The leg 6 usually has almost the same height as the hook 3,
The free end 15 abuts the surface 2A of the tape portion, or at least a part of the abutted free end 15 is a surface 2A.
On the other hand, the top portion 14 is positioned at a height in the vicinity of the top portion 16 of the hook portion while being joined to the base portion with an adhesive or the like. The cushioning sheet 7 is relatively more flexible than the hook portion 3 and is easily deformed by compression. When the fastener tape 1 is pressed against the locked member, the leg portion 6 is compressed and deformed like an imaginary line. Both wings 9 of the hook portion come out above the top portion 14 to facilitate locking to the locked member. In the present invention, when the cushioning sheet 7 is relatively more flexible than the hook portion 3 and is easily deformed by compression,
Thus, it means that the cushioning sheet 7 is more easily deformed than the hook portion 3 when the fastener tape 1 is pressed by the locked member or the like. The leg portion 6 is made to have elasticity so that it can return to the state of the solid line in FIG. 2 after the locked member is detached. In addition, in FIG. 1 and FIG.
Although one hook part 3 is inserted into each one, it is not always necessary to correspond in that way, and many through holes 5 may not have the hook part 3 inserted therein. In addition, it does not matter if many of the hook portions 3 are covered with the cushioning sheet 7 without being inserted into the through holes 5. However, when the hook portion 3 is covered with the cushioning sheet 7 and the hook portion 3 is not inserted into the through hole 5, the hook portion 3 is not useful for locking with the member to be locked, so that the number of such hook portions 3 may unnecessarily increase. It is desirable to determine the layout of the hook portions 3 on the surface of the fastener tape member 4 and the layout of the through holes 5 in the cushioning sheet 7 so that they will not occur.

The fastener tape member 4 can be made by the above-mentioned known or well-known technique. For example, the hook portion 3 is formed by cutting a continuous rib formed on the surface 2A of the tape portion 2 by a die at appropriate places. It can be obtained together with the gap 11 by cutting. In the hook portion 3 processed in this way, the corners 17 of the wings 9 tend to be sharp, and often give a stimulating puncture to the skin and a rough and unpleasant feeling.

As the buffer sheet 7, a non-woven fabric such as a melt-blown non-woven fabric or a spun-bonded non-woven fabric made of a thermoplastic synthetic resin such as polyethylene, or a molded article of a thermoplastic synthetic resin film such as polyethylene can be used. For melt blown nonwoven fabrics, see, for example, US Pat.
It is possible to use the manufacturing technique of the melt-blown nonwoven fabric with a cylindrical hole, which is disclosed in JP-A-1,941 and JP-A-3-51355. When the cushioning sheet 7 is a non-woven fabric, when the sheet 7 is attached to the fastener tape member 4, the fibers of the non-woven fabric have an effect of catching on the hook portion 3 and engaging the sheet 7 with difficulty in coming off, and are generally made of ultrafine fibers. When the melt-blown nonwoven fabric is used, the thin and flexible fibers are particularly apt to be caught in the sharp corner portion 17, and the effect of making the buffer sheet 7 difficult to come off is high. The synthetic resin film may be thermoformed to form the through holes 5 and the leg portions 6, and the size and position of the through holes 5 are appropriately selected to facilitate insertion and engagement of the hook portions 3. The cushioning sheet 7 can be attached by pressing the fastener tape member 4 from the back surface 13 side while inserting the hook portion 3 into the through hole 5.

The fastener tape 1 thus constructed
If the top part 14 of the cushioning sheet 7 comes into contact with the skin first, or the top part 14 and the hook part 3 come into contact with the skin almost at the same time, the hook part 3 is sharp and the rigidity is high. However, a soft feeling can be obtained. Therefore, the fastener tape 1 can be safely used for general underwear and disposable diapers, diaper covers, etc. worn by infants.

FIGS. 3 and 4 illustrate another embodiment of the present invention, and are a perspective view of the fastener tape 1 with a part thereof cut away, and a sectional view taken along line IV-IV thereof. In this embodiment, the hook portion 3 of the fastener tape member 4 has the rounded crown 16 and the shaft portion 21 having a large diameter and high rigidity, and as it is, gives a hard feeling to the skin. .. The cushioning sheet 7 has a through hole 5 having a size capable of inserting the plurality of hook portions 3 and a leg portion 6 extending downward from the back surface 13. The modes of the cross section are shown in FIGS. 4A and 4B, and in FIG. 4A, the top 14 of the cushioning sheet 7 is located below the top 16 of the head. Depending on the shape of the hook portion 3, the cushion sheet 7 can exert its effect even if the hook portion 3 projects somewhat from the cushion sheet 7 as described above. In (B), the top portion 14 is located higher than the top portion 16 of the head. In this case, the cushioning sheet 7 has a particularly high cushioning effect that softens the feeling when the fastener tape 1 touches the skin. The leg portion 6 is not limited to the rib provided on the peripheral edge of the through hole 5,
It is also possible to use appropriately arranged ribs or pillars extending downward from the back surface 13 of the buffer sheet 7.

As an embodiment of the present invention, the cushion sheet 7 operates in the same manner as the cushion sheet 7, but may not take the sheet form shown in the drawings. For example, a very small part of the surface of the fastener tape member 4 is intermittently covered, and therefore an appropriate number of hook portions 3 are separated from each other, and the top portions located in the vicinity of the crown portions 16 of these hook portions and downward from this top portion. A relatively soft and easily compressive-deformable cushioning material, such as strips of cushioning sheet 7, having extending legs can be disposed on the surface of the fastener tape member 4. This cushioning material is likely to exert a cushioning effect when the length of its leg portion is equal to or larger than the height of the hook portion 3. The tips of the legs can be in contact with or joined to the surface 2A of the fastener tape member 4. In addition to the cushioning material, a foamed plastic sheet such as a flexible urethane foam sheet may be used in place of the cushioning sheet 7. In the case of a foamed plastic sheet, the sheet surface consisting of fine bubbles and the skeleton of the plastic that surrounds them is the cushioning sheet 7.
It operates similarly to the top 14 of the.

[0020]

In the fastener tape according to the present invention, since the top of the cushioning material is located in the vicinity of the top of the hook portion, there is no irritation or rough feeling such as piercing even if the fastener tape touches the skin, It can be used for clothing such as underwear and disposable diapers and diaper covers for infants.

[Brief description of drawings]

FIG. 1 is a perspective view showing a fastener tape partially broken away.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a partially cutaway perspective view showing a fastener tape of an embodiment different from that shown in FIG.

FIG. 4 shows IV in FIG. 3 according to (A) and (B).
-The sectional view which shows the aspect of the IV line cross section.

[Explanation of symbols]

 1 fastener tape 2 tape part 3 hook part 4 fastener tape member 5 through hole 6 leg part 7 cushioning sheet (cushioning material) 11 gap 14 top part 16 top part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location A61F 13/56 13/66

Claims (6)

[Claims] 1. A fastener tape comprising a tape portion and a plurality of hook portions standing upright on the surface of the tape portion, the hook portion being detachably locked to a locked member for use. Is relatively softer than the hook portion having a top portion which is located near the top portion of the hook portion with the hook portion separated, and a leg portion which extends downward from the top portion and contacts the tape portion surface. A fastener tape is formed by providing a cushioning material that is easily deformed by compression on the surface of the tape portion.
When the member to be locked is pressed, the buffer member can be locked without hindering, and when pressed against the skin, it is possible to soften the stimulation of the skin by the hook portion. The fastener tape as described above. 2. The cushioning material is a sheet material, and the sheet material has a top portion having front and back surfaces, and a through hole provided at the top portion having a size through which at least one hook portion can be inserted. A leg portion extending downward from the back surface, the sheet material is inserted through the through-hole from the back surface into the hook portion, the tip of the leg portion abutting the tape portion surface, and the head of the hook portion. The fastener tape according to claim 1, wherein the surface of the tape portion is covered by positioning the top portion in a gap between the hook portions near the top portion. 3. The fastener tape according to claim 1, wherein the leg portion is deformed by pressing on the locked member, and is elastically recoverable when the pressing is released. 4. The fastener tape according to claim 1, wherein at least a part of the abutting leg portion is joined to the tape portion surface. 5. The fastener tape according to claim 2, wherein the sheet material is a melt blown nonwoven fabric. 6. A fastener tape comprising a tape portion and a plurality of hook portions standing on the surface of the tape portion, the hook portion being detachably locked to a locked member for use. The fastener tape, wherein a foamed plastic sheet that is relatively softer than the portion and is easily deformed by compression is attached to the hook portion and covers the surface of the tape portion.