Waterproof Fastener Tape and Watertight Slide Fastener Including the Same

Abstract

A waterproof fastener tape of a watertight slide fastener includes a fabric tape and a waterproof layer. The fabric tape includes a first surface, a second surface, a first edge, a second edge, a first cord portion, and an extension portion. The first cord portion protrudes from the first surface. The first and second edges are connected between the first and second surfaces. The first cord portion is spaced from the first edge at a smaller distance than from the second edge. The extension portion extends between the first edge and the first cord portion. The second surface is planar. The waterproof layer covers the first surface, the second surface, the first cord portion, the first edge and the second edge.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The application claims the benefit of Taiwan application serial No. 106126591, filed on Aug. 7, 2017, and the entire contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION1. Field of the Invention[0002]The present invention generally relates to a waterproof fastener tape and a watertight slide fastener using the waterproof fastener tape and, more particularly, to a waterproof fastener tape that is formed by a tape having a cord in which the tape is provided with a waterproof layer and includes a plurality of scoops that can be conveniently and precisely attached thereto, as well as a watertight slide fastener including the waterproof fastener tape.2. Description of the Related Art[0003]A weaved or knitted fabric tape can be provided with a waterproof function by coating an elastomeric material therewith (such as rubber), as it has been adopted by the manufacturers for decades. FIG. 1 shows a waterproof slide fa...

AI Technical Summary

Benefits of technology

[0016]In the example, each of the plurality of through-holes extends through a half or slightly smaller than a half portion of the first cord portion. This permits the scoops to be securely coupled with the waterproof tale.

[0017]In the example, the waterproof fastener tape of the watertight slide fastener further includes a second cord portion protruding from the second surface of the fabric tape. The cord portion can be used to guide the fabric tape into the cavity of the extrusion mold easily.

[0018]In the example, the first and second cord portions are aligned with each other. Thus, the cord portion can be used to guide the fabric tape into the cavity of the extrusion mold easily.

[0019]In the example, the first and second cord portions are partially exposed via the first and second surfaces, respectively. Thus, the cord portion can be used to guide the fabric tape into the cavity of the extrusion mold easily.

[0020]In the example, each of the through-holes is formed with a scoop by extrusion molding, and the scoop includes an upper portion and a lower portion that are symmetric with each other. Thus, the through-hole can be accurately located in the center of the scoop, such that a watertight slide fastener using the waterproof fastener tape can have an improved watertight effect.

[0021]In another aspect, a watertight slide fastener according to the invention includes two waterproof fastener tapes and a slider. Each of the two waterproof fastener tapes includes an inner edge. A row of scoops is located adjacent to the inner edge of each waterproof fastener tape. The slider is adapted to engage the rows of scoops of the two waterproof fastener tapes with each other or to disengage said rows of scoops from each other. Therefore, the watertight slide fastener according to the invention provides an improved watertight effect. Furthermore, the scoops can be more securely coupled with the two waterproof fastener tapes, significantly improving the product yield rate and utility.

Problems solved by technology

The waterproof tape does not include a cord, therefore it is difficult to properly position the waterproof tape.

In addition, it is impossible to visually observe whether the edge of the waterproof tape in a mold cavity of a mold is in complete contact with the mold before formation of the scoops.

The installation of the scoops 73 is difficult, and the scoops 73 cannot be accurately aligned with each other along the scoop engagement portion.

Thus, the liquid-tight slide fastener 9 can only prevent the permeation of the water in a small rain or can only form a water-diverting effect.

The conventional liquid-tight slide fastener 9 cannot provide a proper liquid-tight effect.

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