Tape member for slide fastener and manufacturing method of tape member

Patent metadata

Field	Value
Publication number	US-10863801-B2
Application number	US-201515772763-A
Country	US
Kind code	B2
Filing date	Dec 2, 2015
Priority date	Dec 2, 2015
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A slide fastener tape member includes a tape body and a core string portion disposed at a tape side edge portion of the tape body along a length direction. The core string portion is formed by fixing a string member at the tape side edge portion along the length direction by machine sewing. The string member is fixed linearly such that at least one thread used for machine sewing crosses while contacting an outer peripheral surface of the string member without being pierced by a needle thread of machine sewing. Thus, since the core string portion can be easily provided by fixing the string member to the tape body having desired properties at a later stage, the value-added tape members can be easily manufactured at a relatively low cost.

First claim

The invention claimed is:

1. A slide fastener comprising a pair of fastener stringers in which each fastener stringer includes a plurality of fastener elements attached to a tape member, wherein:
each tape member comprises a flexible tape body and a core string portion disposed at a tape side edge portion of the tape body along a length direction and bulging in a top and back direction from the tape body,
the core string portion is formed by fixing a string member to the tape side edge portion along a tape length direction by machine sewing, and
the string member is fixed to the tape side edge portion linearly without being pierced by a needle thread of machine sewing and with at least one thread used for machine sewing crossing while contacting and surrounding an outer peripheral surface of the string member not in contact with the tape body, and
each of the plurality of fastener elements is attached to the tape member and covers a part of the core string portion and a part of the at least one thread used for the machine sewing.

2. The slide fastener according to claim 1 , wherein:
the string member is fixed only with the needle thread and is formed thicker than the needle thread.

3. The slide fastener according to claim 2 , wherein:
the tape side edge portion comprises a first tape surface on which the needle thread runs and a second tape surface disposed opposite to the first tape surface and in which the needle thread pierces the tape side edge portion and forms loops, and
the string member is fixed to the second tape surface of the tape side edge portion with the needle thread crossing the outer peripheral surface of the string member twice per stitch.

4. The slide fastener according to claim 1 , wherein:
the string member is fixed with lock stitches formed to be bent in a zigzag shape with respect to the tape length direction using the needle thread and a bobbin thread,
the tape side edge portion has a first tape surface on which the needle thread runs and a second tape surface disposed opposite to the first tape surface and on which the bobbin thread runs, and
the string member is inserted between the needle thread and the first tape surface or between the bobbin thread and the second tape surface, and is fixed to the tape side edge portion with the needle thread or the bobbin thread crossing the outer peripheral surface of the string member in a zigzag shape.

5. The slide fastener according to claim 1 , wherein:
the string member is fixed with overedge chain stitches formed using the needle thread and one or two looper threads,
the tape side edge portion comprises a first tape surface on which the needle thread runs and a second tape surface disposed opposite to the first tape surface and on which the needle thread pierces the tape side edge portion and forms loops, and
the string member is inserted between the looper thread and the first or the second tape surface, and is fixed to the tape side edge portion with the looper thread crossing the outer peripheral surface of the string member per stitch.

6. The slide fastener according to claim 1 , wherein:
the string member comprises a first string member and a second string member disposed parallel to each other on one tape surface in the tape side edge portion,
the tape side edge portion comprises a first tape fixing portion to which the first string member is fixed and a second tape fixing portion to which the second string member is fixed, and
the second tape fixing portion is folded back with respect to the first tape fixing portion to the other tape surface of the first tape fixing portion.

7. The slide fastener according to claim 6 , wherein:
the first tape fixing portion and the folded second tape fixing portion are sewn to each other with a tape sewing line formed at a position on a tape inside of the first and second string members along the first and second string members.

8. The slide fastener according to claim 1 , wherein:
the tape side edge portion comprises a tape fixing portion fixing the string member to one tape surface and a tape turning back portion to be folded back to the other tape surface of the tape fixing portion with respect to the tape fixing portion,
the tape turning back portion is sewn to the tape fixing portion together with the string member by machine sewing to fix the string member in a state that the tape turning back portion is folded back and overlapped on the tape fixing portion.

9. The slide fastener according to claim 1 , wherein:
the tape side edge portion comprises, when viewing a cross section perpendicular to a length direction of the tape member, a tape covering portion wrapping and covering the string member inside, a first adjacent portion disposed adjacent to one side of the tape covering portion and a second adjacent portion disposed adjacent to the other side of the tape covering portion, and
the first adjacent portion and the second adjacent portion are sewn to each other with a tape sewing line formed along the string member in a state that the string member is wrapped with the tape covering portion.

Assignees

• Ykk Corp

Inventors

• Hosokawa Yusuke
• Fukuda Yuko
• Sho Yoshiyuki
• Himi Naoyuki

Classifications

• A44B19/46

  Securing separate interlocking members · CPC title

• A44B19/06

  with substantially rectangular members having interlocking projections and pieces · CPC title

• A44B19/32

  Means for making slide fasteners gas or watertight · CPC title

• A44B19/403

  Connection of separate interlocking members · CPC title

• A44B19/42

  Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00 {(attaching closure devices, e.g. slide fasteners, to bags B31B70/813; making package opening by applying or incorporating profile strips, e.g. for reclosable bags B65B61/188)} · CPC title