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Slide fastener

A technology for zippers and zipper tapes, applied in the field of zippers, which can solve problems such as peeling of sheet parts, high manufacturing costs of zippers, inability to engage and disengage zipper elements, etc., and achieve the effect of improving liquid tightness

Active Publication Date: 2014-02-26
YKK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the slide fastener described in Patent Document 2, the sheet-like member may peel off due to long-term use.
On the other hand, in the method of covering the fastener element at the lower end with the bottom stopper, there are cases where molten resin is engaged from the front and back of the mold and the engaging head of the fastener element due to the pressure during injection molding. The gap between the heads leaks upward to form a burr, which makes it difficult to manufacture the zipper, and the leaked resin prevents the engagement and disengagement of the zipper elements near the lower end.
In addition, in order to completely prevent liquid leakage from the mold during the injection molding of the bottom stop, it is necessary to make the mold with high precision. In this case, the production cost of the slide fastener becomes too high

Method used

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Examples

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Embodiment Construction

[0032] Embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar reference numerals are attached to the same or similar parts. In addition, the embodiment shown below is only an illustration of the structure which actualized the technical thought of this invention, and the specific structure of the technical thought of this invention is not limited to the following content.

[0033] figure 1 It is a plan view explanatory drawing which cut|disconnected and showed the whole structure example of the slide fastener 1 which concerns on one Embodiment of this invention along the longitudinal direction (paper top-bottom direction). like figure 1 As shown, the zipper 1 includes: a zipper string 2, which has a plurality of zipper elements 3 arranged in a row along the opposite edge portions 11, 11 of a pair of left and right zipper tapes 10, 10; and a slider 7, which It is used to engage a...

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PUM

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Abstract

Provided is a slide fastener whereby waterproof properties near a bottom stop can be enhanced in cost-effective manner. A slide fastener (1) having a waterproof structure comprises a left-right pair of fastener stringers (2) each having a plurality of fastener elements (3) arranged in a row along an opposing edge (11) of each of a left-right pair of waterproof fastener tapes (10), a slider (7) for engaging and disengaging the left and right fastener elements (3) with each other, and a bottom stop (4) formed at the bottom end of the rows of fastener elements (3) so as to straddle the left and right fastener tapes (10). Each fastener element (3) includes an engaging head part (30), a base part (33), a neck part (32), and a shoulder part (34), and the bottom stop (4) covers a first fastener element (3a) near the lowermost end except for an upper portion of an engaging head part (30a) of the first fastener element, and covers a lower portion of a base part (33b) of a second fastener element (3b) that is above and adjacent to the first fastener element (3a). In the bottom stop (4), a recess (40) is provided that is downwardly indented at the top of the bottom stop. The upper portion of the engaging head part (30a) of the first fastener element (3a), and the lower portions of the neck part (32b) and the engaging head part (30b) of the second fastener element (3b) are disposed in the recess (40). A linking part (41) between the first and second fastener elements (3a, 3b) may be provided in the recess (40).

Description

technical field [0001] The present invention relates to slide fasteners, especially to slide fasteners with water resistance. Background technique [0002] There is known a waterproof zipper constructed in the following manner: a pair of left and right zipper strings are formed by injection molding a synthetic resin material into a plurality of zipper elements at opposite edge portions of a left and right pair of waterproof zipper tapes for The slider that engages and disengages the left and right zipper elements is inserted between the left and right zipper strings in a slidable manner, and is attached to the lower end of the zipper elements by injection molding of a synthetic resin material. Stop code, install top stop code on the upper end. In Japanese Patent Application Publication No. 02-107309, etc., it is disclosed that there is a technique of injecting and molding a synthetic resin material to go out the bottom stop code. With regard to such a zipper, each zipper e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A44B19/32
CPCA44B19/36A44B19/32Y10T24/2514Y10T24/2539Y10T24/2593
Inventor 田中亮富永丰长谷川雅道三熊亮
Owner YKK CORP
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