US 6,757,953 B2 · Method for forming an end of slide fastener chain

Abstract

A method for forming ends of a slide fastener chain wherein, coil-shaped fastener elements such as linear fastener elements are attached and sewed to side edge portions of a pair of fastener tapes with sewing yarns as fixing yarns while a core thread is inserted through the fastener elements. The coil-shaped fastener elements are cut off at leg portions, each of which is in contact with the fastener tape, at ends of the fastener elements, so that cut end portions are formed. These cut end portions are pushed inward of the side edge portions, and then, the leg portions and inverted portions thereof are fused to the fastener tapes by heating. As a result, each end of the fastener elements is stabilized, so that the resultant slide fastener is safe.

Claims5

Dependent claims

A method for forming an end of a slide fastener chain in which linear fastener elements made of thermoplastic resin are attached to a side edge portion of a fastener tape, said method comprising steps of:

cutting a leg portion at an end of the linear fastener elements to form a cut end portion;
pushing the cut end portion from a first position where the cut end portion protrudes from the side edge of the fastener tape to a second position where the cut end is positioned inward of the side edge portion of the fastener tape;
and
while keeping said cut end portion being pushed, fusing said end of the linear fastener elements to the fastener tape by heating.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

10/102,665Filed 22 Mar 2002 · division

Priority

JP 11-11507822 Apr 1999

Published

US 2002/0121006 A15 Sep 2002

Granted

6 Jul 2004

Term ends

Not estimatedThe source records don’t support an estimate.

Classification22 codes

A44B 19/42
Slide fasteners: making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
A44B 19/58
Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00: removing interlocking members to…
A44B 19/60
Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00: applying end stops upon stringer tapes
B29C 65/08
By heating, with or without pressure: using ultrasonic vibrations

Method for forming an end of slide fastener chain

Life of this patent

Method for forming an end of slide fastener chain

Life of this patent

Abstract

Claims5