JPS628703A - Spliced fastener chain and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a spliced fastener chain made by splicing fastener chains and a method for manufacturing the same. As a long zipper chain, it can be used to connect rugs, fishing nets, civil engineering sheets, artificial turf at baseball stadiums, etc. The zipper chains can be joined in a ring to open circumferential openings in bags, bags, etc. It can be used in a wide range of fields, such as being able to be used in a variety of places.

Conventional technology In the past, it has not been done to join zipper chains because it is difficult to pass a slider through the joints without any problems, and it has not been done in order to obtain a zipper chain of the required length. was obtained by manufacturing one continuous zipper chain.

Problems to be Solved by the Invention Therefore, in the past, it has not been possible to manufacture long zipper chains or circular zipper chains that are several hundred or several thousand meters long.

Therefore, the present invention aims to provide a spliced fastener chain and a method for manufacturing the same, which makes it possible to manufacture long fastener chains or circular fastener chains spanning hundreds or thousands of meters, which was previously impossible. This is the purpose.

Means for Solving the Problems The spliced fastener chain of the first invention is characterized in that a tape extension of a predetermined length without fastener elements formed at each longitudinally opposite end of the fastener chain is formed into approximately one piece of tape. The slider can pass through the seam without any problem by polymerizing and bonding it to a thickness of This structure provides sufficient resistance to loads in the longitudinal direction to prevent chain cracking.

Further, in the method for manufacturing a spliced fastener chain according to the second invention, as shown in FIG. sections, each tape extension is then polymerized and seamed to a thickness corresponding to approximately the thickness of one tape, and a fastener element is attached to the tape side edge of the polymerized seam. This is a manufacturing method consisting of a step of rolling and attaching, and allows a spliced fastener chain to be manufactured at low cost without using auxiliary splicing tape or the like.

Example Embodiments of the present invention will be described below based on the drawings.

The zipper chains shown in Figures 1 to 10 are as follows:
The zipper chain is made of synthetic resin molded by injection molding or metal molded by die casting. The present invention can be similarly applied to the splicing of a type of fastener chain in which individual fastener elements are formed from raw material wire and planted on the side edges of a fastener tape, as shown in Figure 1).

FIG. 1 is a plan view of a spliced fastener chain F showing 100 seams where two fastener chains are spliced together. and similar fastener elements 5' at the same spacing as the fastener elements 5, 5 attached to each fastener chain, on the side edges of the tape of this spliced part.

5/ is added early. And the joint part 10 is
As shown in Fig. 3, in order to allow the slider to pass through without any trouble, it is polymerized and melt-bonded 9 to a thickness approximately corresponding to the thickness of the fastener tape 3.4, and the core 6 to which the fastener element is attached is attached. Also, as shown in FIG. 2, the core portion 6 is polymerized and melt-bonded 9 to have the same thickness as the core portion 6. Therefore, the fastener tape 3,
4 and the core 6 are required to be made of synthetic fiber material made of thermoplastic synthetic resin. Note that it may be made of a fibrous material including a part of synthetic fiber material. Furthermore, when tapes including core portions are polymerized and bonded to each other, a thin synthetic resin film may be interposed between the tapes to strengthen the adhesive force. Further, as shown in FIGS. 2 and 3, a fastener element 5/ is attached to the joint portion 10 so as to extend over the core portion 6, thereby reinforcing the resistance of the joint portion 10 against loads in the longitudinal direction. The dimensional stability in the longitudinal direction is good, and the function as a fastener can be sufficiently maintained for the fastener chain F of any length.

Figures 4 and 5 show embodiments of a zipper chain obtained by the splicing of the present invention, and Figure 4 shows an annular zipper chain obtained by splicing both ends of a single zipper chain. For example, by attaching it to the circumferential opening of a bag or bag, it is possible to freely select the opening position. Figure 5 shows a large number of fastener chains joined together in the longitudinal direction, which can be used to connect very long sections such as rugs, fishing nets, civil engineering sheets, or artificial turf at baseball fields. It is.

Fig. 6 shows an outline of the splicing process of the present invention, and Fig. 6 (a) shows the fastener stringer 1 to be spliced.
, 2 at each end of the tape, which includes a fastener element 5 attached to each end.
Remove two ", 5" and tape extension part 8'f! : It is something that forms. Note that when attaching the fastener element 5 to the fastener stringers 1 and 2 to be spliced in advance, the tape extension portion 8 may be formed so as not to be attached to the end portion. Next, as shown in FIG. 6(B), the tape extensions 8 at opposing ends of the fastener stringers 1 and 2 are overlapped and heated and melted by ultrasonic heating, high frequency heating, electric heat, etc., so that almost the fastener Adhere under pressure to the thickness of one piece of tape. Then, as shown in FIG. 6 (/9), two fastener elements 5', which are the same as the fastener elements 5 attached to the fastener stringers 1 and 2, are placed at the same interval on the tape side edge of the seam 10 that has been bonded by polymerization. Attached fastener stringer
1, 2 joint.

The joining is completed and the spliced fastener chain F is manufactured.

Further, to describe the process shown in Fig. 6 in detail, the seventh
The figure is a perspective view of placing opposing ends of fastener stringers 1 and 2 on a polymerization bonding device consisting of an ultrasonic horn 1) and an anvil 12 in a polymerization bonding process, in which one of the fastener strings ji The tape extension part 8 at the end of the fastener stringer -2 is inserted into a positioning cavity 14 for positioning by the fastener element 5 provided on the upper surface of the anvil 12, and a groove part 15 in which the core part 6 is placed. The fastener element 5 and the core 6 are fitted and placed on the upper surface of the anvil 12 while being held in place, and the tape extension 8 at the end of the other fastener stringer 1 is attached adjacent to the anvil 12 with a spring. The fastener element 5 of the fastener stringer 1 is fitted and placed in the positioning cavity 16, which is positioned by the fastener element 5, which is provided on the upper surface of the guide member 13, which is provided to be movable up and down by the fastener stringer 17. , the preparation for the polymerization adhesion process is completed. This preparation state is shown in Figure 8 (
The relative position shown in b) is reached, and the fastener stringer-1
is placed on the upper surface of the guide member 13 in the upper position by the spring 17, and its protruding tape extension 8
is positioned in contact with the lower surface of the ultrasonic horn 1). Next, the ultrasonic horn 1) descends while pushing down the tape extension part 8 of the fastener stringer 1, and as shown in FIG. 8(b), the tape extension part of the fastener stringer 2 placed on the upper surface of the anvil 12 8, the tape extension 8 of the fastener stringer 1 is superposed. At this time, the guide member 13 is
It is lowered simultaneously with the ultrasonic horn 1) against the force of 7.

The portion pressed by the ultrasonic horn 1) is melted by ultrasonic oscillation, compressed to the thickness of one tape, and bonded. Next, the process of attaching the fastener element 5' to the polymerized joint portion 10 will be explained. FIG. 9 shows an example of the process of attaching the fastener element 5' by injection molding into an injection mold. Two molding cavities 20 for injection molding the fastener element 5' are provided in the center on opposing surfaces of the upper mold 18 and lower mold 19 for injection molding,
Further, at both ends thereof, there are positioning cavities 21°2 for positioning using ready-made fastener elements 5.
2 are provided in each case. First, place the joint part 10 in the center on the lower mold 19 and position the hollow part 21.22.
A ready-made fastener element 5 is fitted and placed on the mold, and then the upper mold 18 is lowered to close the mold, and a synthetic resin material is injected into the cavity 20 for molding the fastener element in the center.
A fastener element 5 is attached to the tape side edge of the seam portion 10.
A spliced fastener chain F is completed by attaching the spliced fastener chain F by straddling it, cooling it, and then removing it from the mold.

Figure 10 shows an example in which the length of the tape extension formed at each end of the fastener stringer is the length of one fastener element 5#, and the tape required for the splicing is The length of the extended portion is suitably the length of two fastener elements, but it may also be the length of one or six or more fastener elements, but if it is too long, the polymerized adhesive portion will become long, which is not preferable.

Above, we have explained the splicing of fastener chains to which fastener elements are made of synthetic resin molded by injection molding.
What is shown in the figure is a fastener chain in which individual fastener elements 5a are molded and planted from metal wire, and are spliced together.In this type of fastener chain, tape extensions are similarly formed, After polymerizing and adhering this, as shown in Figure 12, attach the fastener over the tape side edge of the seam.
5a"r can be attached to obtain a spliced fastener chain.

It is better to have the joints of each fastener stringer of the fastener chain to be spliced close together for better appearance, but as shown in Fig. 13, the seam 10a
It is also possible to form a spliced fastener chain by interlocking the splices in a staggered manner, thereby increasing the resistance to loads in the longitudinal direction when the seams are close together.

Effects of the Invention The present invention involves joining tape extensions of a predetermined length at each end of a zipper chain by polymerizing adhesive bonding so as to correspond to the thickness of one piece of tape, and forming a tape side edge of the joint portion. Since the fastener element is installed across the joint, the joint part can sufficiently withstand loads in the longitudinal direction, and there is no deformation from the structure of a normal slide fastener, so even if there is a joint, the slider will not move in the longitudinal direction. The fastener elements can be passed through continuously and smoothly, and the fastener element rows can be easily engaged and disengaged.

And the seams can be processed at low cost without using auxiliary tape for splicing, and without impairing the function of the slide fastener, a circular fastener chain and hundreds of
It has excellent effects such as being able to easily manufacture zipper chains with a length of several thousand meters.

[Brief explanation of drawings]

FIG. 1 is a plan view of a fastener chain spliced by the manufacturing method of the present invention, FIG. 2 is a longitudinal cross-sectional view of the core of the joint portion in FIG. 1, and FIG. Line cross-sectional views, FIGS. 4 and 5, show embodiments of the spliced fastener chain of the present invention, in which FIG. 4 shows an annularly spliced fastener chain, and FIG. 5 shows a longitudinally spliced fastener chain. A perspective view of the fastener, FIG. 8
Figures (A) and (B) are side views showing the polymerization adhesion process, Figures 9 (A) and (B) are side views showing the installation process of the fastener element, and Figures 10 (A) and (B) are side views showing the process of attaching the fastener element. A modified example of the tape extension part for joining, Figure 1) is an example showing the joining of a fastener chain attached to a fastener element formed from metal wire, Figure 12 is a modification of the Kari-MH of Figure 1). The sectional view, Figure 13, shows each fastener stringer.
FIG. 2 is a plan view of a spliced fastener chain in which the joints are shifted and meshed together. 1.2...Zipper stringer-3,4...
... Fastener tape 5.5', 5〃, 5a, 5a' ... Fastener element 6 ... Core part 8 ... Tape extension part 9 ... ...Polymerized adhesive part 10.10a... Seam part 1) ... Ultrasonic horn 12 ... Anvil

Claims (2)

[Claims] (1) A predetermined length of tape extension without a fastener element formed at each end opposite to each other in the longitudinal direction of the fastener chain is polymerized and bonded to a thickness approximately equal to the thickness of one tape, and the polymerized A spliced fastener chain characterized by having a fastener element straddled and attached to the tape side edge of the bonded seam. (2) A tape extension of a predetermined length without a fastener element is formed at each longitudinally opposite end of the fastener chain, and each tape extension has a thickness approximately equal to that of one tape. 1. A method for manufacturing a spliced fastener chain, comprising the steps of: polymerizing and bonding and splicing the chains, and attaching a fastener element across the tape side edge of the polymerized and bonded seam.