Velvet-type fastener web

• US 4,338,800 A
• Filed: 05/08/1980
• Issued: 07/13/1982
• Est. Priority Date: 05/09/1979
• Status: Expired due to Term

• Current Assignee: YKK Corporation
• Original Assignee: Yoshida Kogyo K.K.
• Inventors: Matsuda, Yoshio
• Primary Examiner(s): Feldbaum, Ronald
• Application Number:
  US06/147,760
• Time in Patent Office: 796 Days
• Field of Search: 428/85, 428/253, 428/100, 28/161, 66/194, 66/84, 66/87, 66/192, 66/193, 66/196, 66/195
• US Class Current: 66/194
• CPC Class Codes: A44B 18/0042 of a mushroom type
• CPC Class Codes: D04B 21/20 specially adapted for knitting articles of particular configuration
• CPC Class Codes: D04B 35/34 Devices for cutting knitted fabrics
• CPC Class Codes: D10B 2403/0311 Small thickness fabric, e.g. ribbons, tapes or straps
• CPC Class Codes: D10B 2501/0632 of the touch-and-close type

Abstract

A velvet-type or snap-together fastener web comprises a warp-knitted ground structure and series of interlooped loops disposed in at least every other wale, each loop including a pair of mushroomed stems projecting from the wale at each course. To produce such a fastener web, a double-faced fabric is knitted on a Raschel warp knitting machine, and is separated into a plurality of strips by dissolving transversely spaced water-soluble threads in the fabric. Each strip is divided into front and back fabric webs by severing thermoplastic thread portions therebetween, leaving a multiplicity of raised stems on each fabric web. The raised fabric stems are then heated to mushroom their ends.

Claims

1. A velvet-type fastener web comprising:

(a) a knitted ground structure including a first set of threads having stitches constituting wales and courses, and a second set of threads connecting said wales transversely; and

(b) a series of loops of thermoplastic monofilament knitted with said stitches in each of selected wales, each of said loops including a pair of stems projecting from said knitted ground structure at one of said courses and having a pair of locking ends, respectively.

2. A velvet-type fastener web according to claim 1, said series of loops being disposed in alternate wales.

3. A velvet-type fastener web according to claim 1, said series of loops being disposed in every third wale.

4. A velvet-type fastener web according to claim 2 or 3, including a third set of threads knit in wales other than said selected wales.

5. A velvet-type fastener web according to claim 1, said series of loops being prepared by severing chain stitches having the pattern of 0-2/0-2/0-2/0-2.

6. A warp-knitted velvet-type fastener web comprising:

(a) a plurality of first threads having stitches constituting wales and courses;

(b) a plurality of second threads connecting said wales transversely; and

(c) a plurality of third threads knit in each of selected wales, and each having a pair of raised locking ends at one of said courses.

7. A warp-knitted velvet-type fastener web according to claim 6, including a plurality of fourth threads knit in wales other than said selected wales.