Waterproof slide fastener

Abstract

A waterproof slide fastener in which an entire surface of a fastener tape is covered with elastomer, through holes are made in a side edge of the fastener tape, and fastener elements each comprising a coupling head, a neck portion, an engaging projection, a leg portion and a tongue piece, are molded by injection molding so as to cover the through holes. Reinforcing portions are provided projectingly from sides of the leg portion so as to cover at least a part of each of the through holes in a longitudinal direction of the through holes made in the fastener tape so that the reinforcing portions surround the through holes, so the reinforcing portions prevent the through holes from being exposed even when the fastener tape is bent, thereby maintaining water-tightness and airtightness.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a fastener element of a waterproof slide fastener according to a first embodiment;

FIG. 2 is a front view of the fastener element of the waterproof slide fastener;

FIG. 3 is a side view of the fastener element of the waterproof slide fastener;

FIG. 4 is a front view of the fastener chain of the waterproof slide fastener;

FIG. 5 is a sectional view of the fastener element when the waterproof slide fastener is bent;

FIG. 6 is a perspective view of the fastener element of the waterproof slide fastener according to a second embodiment;

FIG. 7 is a front view of the fastener element of the waterproof slide fastener;

FIG. 8 is a side view of the fastener element of the waterproof slide fastener;

FIG. 9 is a perspective view of the fastener element of the waterproof slide fastener according to a third embodiment;

FIG. 10 is a front view of the fastener element of the waterproof slide fastener;

FIG. 11 is a side view of the fastener element of the waterproof slide fastener;

FIG. 12 is a perspective view of the fastener element of the waterproof slide fastener according to a fourth embodiment;

FIG. 13 is a front view of the fastener element of the waterproof slide fastener;

FIG. 14 is a side view of the fastener element of the waterproof slide fastener;

FIG. 15 is a front view of a known slide fastener; and

FIG. 16 is a front view of a known waterproof slide fastener.

Claims

1. A waterproof slide fastener, wherein an entire surface of a fastener tape is covered with elastomer; through holes are made in the fastener tape; fastener elements are integrally molded on front and rear surfaces of the fastener tape using thermoplastic resin such that each of the fastener elements comprises a coupling head having a coupling concave portion provided at a front end of the fastener element, a constricted neck portion, an engaging projection at a neck portion, a leg portion, and a tongue piece projecting from a rear end of the leg portion; a tape edge portion is exposed on a foreside of the engaging projection; and the leg portions are attached to the through holes, the fastener element further comprising reinforcing portions integrally formed therewith and projecting from sides of the leg portion.

2. The waterproof slide fastener according to claim 1, wherein the reinforcing portions projecting from the sides of the leg portion are formed so as to cover at least a part of each of the through holes in a longitudinal direction of the through holes made in the fastener tape.

3. The waterproof slide fastener according to claim 1, wherein the reinforcing portions projecting from the sides of the leg portion are formed thicker than the engaging projection formed at the neck portion and thinner than the leg portion.

4. The waterproof slide fastener according to claim 1, wherein the reinforcing portions projecting from the sides of the leg portion are formed in a same thickness as the engaging projection and the tongue piece.

5. The waterproof slide fastener according to claim 1, wherein the reinforcing portions projecting from the sides of the leg portion are formed in a same thickness as the leg portion.

6. The waterproof slide fastener according to claim 1, wherein the reinforcing portions projecting from the sides of the leg portion are formed in a larger width than the width of the engaging projection formed at the neck portion.