Slide fastener stringer and method of manufacturing the same

Abstract

A slide fastener stringer easily manufactured by a series of manufacturing steps with molding fastener elements in a warp yarn exclusion area formed on one side edge of a fastener tape, wherein a fastener tape is produced by weaving with warp yarns and weft yarns of synthetic fiber yarn; plural pieces of water soluble fiber yarns are disposed inside over plural pieces of the warp yarns from the side edge of the tape; in a dying step in a process for manufacturing a fastener stringer, the water soluble fiber yarns are dissolved to form the warp yarn exclusion area; and by molding the fastener elements by using the warp yarn exclusion area, the fastener stringer is manufactured in an easy sequential manufacturing process without applying any special processing.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a fastener stringer which is a material of a slide fastener, the slide fastener in which fastener elements are molded in a fastener tape including gaps formed at a portion of the slide fastener on which the fastener elements are to be mounted, and relates to a method of manufacturing the fastener stringer. [0003] 2. Description of the Related Art [0004] Conventionally, a slide fastener, in which through holes are provided along a side edge of a fastener tape and fastener elements of thermoplastic resin are attached to the through holes by injection molding, has been well known. For example, in a slide fastener shown in FIG. 10 (Japanese Utility Model Application Publication No. 61-35049), a fastener tape 1′ is woven by using polyester fiber yarns or union yarns of polyester fibers and natural fibers as warp yarns 2′ and weft yarns 3′, through holes 20′ are drilled at predetermined po...

AI Technical Summary

Benefits of technology

[0007] In addition to the object of the first aspect, an object of second to fifth aspects of the invention is to provide a slide fastener stringer in which the fastener elements of thermoplastic resin or metal such as zinc alloy are mounted on the fastener tape firmly with a good appearance by molding process.

[0010] Consequently, the fastener stringer which is the material of the slide fastener can be produced easily. Further, the fastener elements can be mounted on the fastener tape firmly so as to finish an excellent fastener stringer.

[0014] Consequently, the core thread disposed on the side edge of the fastener tape can be maintained in a stable state without inducing any deviation of stitch, so that the fastener elements of thermoplastic resin or metal such as zinc alloy can be molded accurately so as to finish a fastener stringer having a high strength.

[0016] With the above feature, the coupling head and the leg of the fastener element are integral and the coupling head is located accurately outside the fastener tape. As a consequence, the leg is molded in the warp yarn exclusion area deprived of the warp yarns such that it penetrates through the front and rear surfaces of the fastener tape and thus, the leg can be held securely.

[0018] Consequently, the leg of the fastener element is closely-attached to the weft yarns arranged neatly and the front end of the leg is closely-attached to the warp yarn facing the exclusion area, thereby preventing the leg from moving. As a consequence, a solid fastener stringer can be finished.

[0020] With this feature, by forming the warp yarn exclusion area at a portion located inwardly from the side edge of the fastener tape and molding the fastener elements of thermoplastic resin or metal such as zinc alloy in the warp yarn exclusion area, a slide fastener stringer equipped with solid and stable elements can be manufactured easily by using an ordinary manufacturing apparatus without use of any special manufacturing apparatus. Therefore, the effects which the present invention achieves are extremely remarkable.

Problems solved by technology

In the slide fastener shown in FIG. 10, the fastener elements 13′ of thermoplastic resin are mounted on the fastener tape 1′ by injection molding, and its procedure and process are complicated and take a long time and are much troublesome.

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