JPH0763407B2 - Method for cutting hook-and-loop fastener tape piece and hook-and-loop fastener tape piece - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting a surface fastener tape piece constituting a surface fastener and a surface fastener tape piece.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Laid-Open No. 49-94806, a surface fastener tape piece obtained by cutting a surface fastener tape having a large number of engaging elements on the surface of a base cloth into an appropriate shape is known. ing.

[0003]

In such a surface fastener tape piece, the cut end portion of the base cloth is melted and solidified so that the engaging elements and the base cloth are not frayed at the cut portion. Since the engaging element adjacent to the cut end is melted and solidified inside the base cloth, the portion of the predetermined length near the cut end of the base cloth where the engaging element is melted and solidified is the base cloth. The yarn itself that constitutes the is slightly hardened due to the fact that it is slightly melted and solidified. For this reason, when the surface fastener tape piece is used as a surface fastener, the part of the predetermined length near the cut end is harder than other parts and is uncomfortable to use, and when used in a part that comes into contact with the human body. However, there is a problem in that a part of a predetermined length near the cut end is hard to contact with the human body and becomes uncomfortable.

For example, when a hook-and-loop fastener tape piece is attached to a diaper cover and used as a hook-and-loop fastener, the infant's body hits the hook-and-loop fastener tape piece when an infant is placed on the open diaper cover and the diaper is replaced. As described above, the infant's body touches the portion of the predetermined length near the cut end, which is uncomfortable.

[0005]

A base cloth 1 is formed by using a punch 13 having a sectional shape having a concave portion 12 between a cutting edge 10 having a pointed shape and a presser 11 having a flat surface, and an ultrasonic wave horn.
Of the engaging element 2 adjacent to the cutting end 4 is melted and solidified, and a part of the engaging element 2 adjacent to the cutting end 4 is welded to the surface of the base cloth 1 so that the surface of the base cloth 1 is elasticized by the engaging element 2. The surface fastener tape is cut so as to form the raised portion 5 having the property.

[0006]

[Operation] Melting and solidification of the cut end portion 4 of the base cloth 1 and an elastic raised portion 5 on the surface of the base cloth 1 adjacent to the cut end portion 4
Are simultaneously formed.

[0007]

[Example] Fig. 2 is a perspective view of a surface fastener tape piece, showing a large number of engaging elements 2 standing on the surface of a rectangular base cloth 1 having a predetermined thickness, width and length. It is a female surface fastener tape piece having a loop-shaped engaging element. The base cloth 1 and the engaging element 2 are woven or knitted with a thread of a thermoplastic resin such as nylon. The surface fastener tape piece is obtained by cutting a long surface fastener tape in the width direction at a predetermined interval, and both side portions in the width direction of the base fabric 1 are ears 3 so as not to be frayed. The both ends in the longitudinal direction are cut ends 4.

As shown in FIG. 3, the method of cutting the surface fastener tape piece as described above is such that the cutting edge 10 having a pointed shape is used.
Using a punch 13 having a cross-sectional shape having a concave portion 12 between a presser 11 having a flat surface and a flat surface and having an approximately U-shape in plan view, and an ultrasonic oscillation horn (not shown), the same width as the surface fastener tape. It is sufficient to cut a long surface fastener tape.

As shown in FIG. 3, this is the punch 1
The surface of the base cloth 1 is cut by cutting the base cloth 1 with the cutting edge 10 of 3 and melting and solidifying the cutting end 4 while simultaneously crushing the engaging element 2 adjacent to the cutting end 4 while melting in the recess 12. Then, the raised portion 5 is formed by welding and the portion of the base cloth 1 facing the pressing member 11 is slightly melted and fixed to form the molten and solidified portion 6.

In the surface fastener tape piece manufactured by such a cutting method, as shown in FIG. 1, the cut end portion 4 of the base cloth 1 is melted and solidified and is adjacent to the cut end portion 4. A portion of the engaged engaging element 2 is welded to the surface of the base fabric 1 to form a resilient ridge 5 on the surface of the base fabric 1 by the remaining portion of the welded engaging element 2.
A slightly solidified melt-solidified portion 6 is formed in the base cloth 1 portion between the raised portion 5 and the forested engagement element 2.

Incidentally, as shown in FIG. 4, it is possible not to form a melt-solidified portion between the raised portion 5 and the engaging element 2. In the above embodiments, the female-side surface fastener tape piece having the loop-shaped engaging element is described, but the same applies to the male-side surface fastener tape piece having the hook-shaped or mushroom-shaped engaging element.

[0012]

According to the present invention, a punch 13 having a sectional shape having a recess 12 between a cutting edge 10 having a pointed shape and a presser 11 having a flat surface, and an ultrasonic oscillating horn are used to form a base cloth. The cutting end 4 of No. 1 is melted and solidified, and the cutting end 4
A surface fastener tape so that a portion of the engaging element 2 adjacent to the base cloth 1 is welded to the surface of the base cloth 1 to form a ridge 5 having elasticity by the engaging element 2 on the surface of the base cloth 1. By cutting, it is possible to simultaneously melt and solidify the cut end portion 4 of the base cloth 1 and to form the elastic raised portion 5 on the surface of the base cloth 1 adjacent to the cut end portion 4. The process can be made easy and inexpensive.

Further, in the surface fastener tape piece,
Since the cut end 4 of the base fabric 1 is melted and solidified, the base fabric 1 does not fray, and a part of the engaging element 2 adjacent to the cut end 4 is welded to the surface of the base fabric 1. The engaging element 2 does not fray.

Further, a portion of the engaging element 2 adjacent to the cut end 4 is welded to the surface of the base fabric 1 so that the engaging element 2 forms a ridge 5 having elasticity on the surface of the base fabric 1. Therefore, the engaging element 2 does not melt into the inside of the base fabric 1 and solidify, and a predetermined length portion of the base fabric 1 near the cut end 4 does not become hard and is used without any discomfort when used as a surface fastener. It is easy to do, and when it is used in a part that comes into contact with the human body, the elastic ridge 5 made of the engaging element 2 comes into contact with the human body, so that it does not become uncomfortable.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a cut end side.

FIG. 2 is a perspective view of a surface fastener tape piece.

FIG. 3 is a sectional view in a cut state.

FIG. 4 is an enlarged cross-sectional view of another cut end side.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base cloth, 2 ... Engaging element, 4 ... Cutting end part, 5 ... Raised part,
6 ... Melting and solidifying section.

Claims (3)

[Claims] 1. A cutting method for forming a tape piece by cutting a woven or knitted surface fastener tape having a number of engaging elements 2 standing on the surface of a base cloth 1 into an arbitrary shape, which comprises cutting a pointed shape. Using a punch 13 having a cross-sectional shape having a recess 12 between a blade 10 and a flat surface-shaped presser 11 and an ultrasonic oscillating horn, the cut end 4 of the base cloth 1 is melted and solidified, and the cut end is also cut. A portion of the engaging element 2 adjacent to the portion 4 is welded to the surface of the base cloth 1 so that the engaging element 2 forms a ridge 5 having elasticity on the surface of the base cloth 1. A method for cutting a tape fastener tape piece, which comprises cutting the tape. 2. A tape piece formed by cutting a woven or knitted surface fastener tape having a number of engaging elements 2 standing on the surface of a base cloth 1 into an arbitrary shape, wherein a cutting edge 10 having a pointed shape is provided. Using a punch 13 having a cross-sectional shape having a recess 12 between a flat surface-shaped presser 11 and an ultrasonic oscillating horn, the cut end 4 of the base fabric 1 is melted and solidified, and the cut end 4 is formed. Cutting the surface fastener tape so that a part of the adjacent engaging elements 2 is welded to the surface of the base fabric 1 so that the engaging elements 2 form elastic ridges 5 on the surface of the base fabric 1. A surface fastener tape piece characterized by being formed by. 3. The surface fastener tape piece according to claim 2, wherein a large number of engaging elements standing on the surface of the base fabric 1 are formed as continuous loop-shaped female elements.