Stretchable warp knitted fabric

• US 6,848,281 B2
• Filed: 05/06/2003
• Issued: 02/01/2005
• Est. Priority Date: 05/08/2002
• Status: Active Grant

• Current Assignee: YKK Corporation
• Original Assignee: YKK Corporation
• Inventors: Takizawa, Toshiaki, Nakayama, Eiji, Ishihara, Mitsutoshi
• Primary Examiner(s): WORRELL JR, LARRY D
• Application Number:
  US10/429,750
• Publication Number:
  US 20030211798A1
• Time in Patent Office: 637 Days
• Field of Search: 66190-196, 442312-314, 442304-306
• US Class Current: 66/195
• CPC Class Codes: D04B 21/04 characterised by thread material
• CPC Class Codes: D04B 21/18 incorporating elastic threads
• CPC Class Codes: D10B 2501/0632 of the touch-and-close type
• CPC Class Codes: Y10T 442/40 Knit fabric [i.e., knit strand or strip material]

Abstract

A stretchable warp knitted fabric comprising warp knitting yarns, first weft in-laid yarns and second weft in-laid yarns, and stretchable warp in-laid yarns. The second weft in-laid yarns consist of a plurality of at least non-stretchable yarns, and said second weft in-laid yarns run sequentially and separately in the course direction on different wale regions of the same course with having an arbitrary length respectively, while crossing the first weft in-laid yarns between courses. Consequently, even when pulled in a longitudinal direction, because the separate second weft in-laid yarns influence each other independently, the fabric does not have a great amount of ruffling in a width direction thereof and thus the a flat surface is maintained wherein there is no narrowing in the middle of the longitudinal direction.

Claims

1. A stretchable warp knitted fabric comprising:

warp knitting yarns which form wales;

weft in-laid yarns which run in a course direction; and

stretchable warp in-laid yams which run in a wale direction,

wherein the weft in-laid yarns comprise first weft in-laid yarns which form a ground weave of the fabric and a plurality of second weft in-laid yarns which consist of at least non-stretchable yarns, and

wherein the plurality of the second weft in-laid yarns run sequentially in the course direction on different wale regions of a same course with having an arbitrary length respectively, while crossing the first weft in-laid yarns between courses and

wherein the stretchable warn in-laid yarns are inserted in a zigzag shape into knitted loops of each of the warn knitting yarns in the wale direction.

2. A stretchable warp knitted fabric according to claim 1, wherein portions of return ends of the second weft in-laid yarns, which run beside each other and between adjacent courses, are entwined with same knitted loops on a same wale, respectively.

3. A stretchable warp knitted fabric according to claim 1, wherein portions of return ends of the second weft in-laid yarns, which run beside each other and between adjacent courses, are entwined with knitted loops of adjacent wales on adjacent courses, respectively.

4. A stretchable warp knitted fabric according to claim 1, wherein portions of running regions of the second weft in-laid yarns, which run in adjacent courses share a wale region.

5. A stretchable warp knitted fabric according to claim 1, further comprising pile knitting yarns, wherein the pile knitting yarns form pile loops standing on a knitted fabric surface.

6. A stretchable warp knitted fabric according to claim 5, wherein the pile knitting yarns cross over adjacent wales at least every 3 courses and form the pile loops.