Warp knitted ware with reinforcing threads

• US 4,518,640 A
• Filed: 02/08/1984
• Issued: 05/21/1985
• Est. Priority Date: 02/09/1983
• Status: Expired due to Fees

• Current Assignee: Mayer KARL Textilmaschinenfabrik GmbH
• Original Assignee: KARL Mayer Textilmaschinenfabrik GmbH (Karl Mayer Verwaltungsgesellschaft mbH)
• Inventors: Wilkens, Christian
• Primary Examiner(s): Bell, James J.
• Application Number:
  US06/578,355
• Time in Patent Office: 468 Days
• Field of Search: 428/253, 428/254, 428/102, 428/257, 428/408, 428/902, 66/192, 66/193, 66/84 A
• US Class Current: 428/102
• CPC Class Codes: D04B 21/165 with yarns stitched through one or more layers or tows, e.g. stitch-bonded fabrics layered products not united by stitch loops B32B5/22
• CPC Class Codes: D04H 3/002 Inorganic yarns or filaments
• CPC Class Codes: D04H 3/004 Glass yarns or filaments
• CPC Class Codes: D04H 3/011 Polyesters
• CPC Class Codes: D04H 3/045 for net manufacturing
• CPC Class Codes: D04H 3/115 by applying or inserting filamentary binding elements
• CPC Class Codes: D10B 2401/063 high strength
• CPC Class Codes: D10B 2403/02412 including several arrays of unbent yarn, e.g. multiaxial fabrics
• CPC Class Codes: D10B 2505/18 Outdoor fabrics, e.g. tents, tarpaulins D10B2507/00 takes precedence
• CPC Class Codes: Y10S 428/902 High modulus filament or fiber
• CPC Class Codes: Y10T 428/24033 including stitching and discrete fastener[s], coating or bond
• CPC Class Codes: Y10T 428/30 Self-sustaining carbon mass or layer with impregnant or other layer
• CPC Class Codes: Y10T 442/463 Warp knit insert strand

Abstract

A warp knitted fabric employs a warp knitted pattern as the ground stitches. In this novel fabric there are reinforcing threads of a substantially rigid material. The weft threads may run parallel to each other and are located between the needle loops of stitch rows that follow each other sequentially in the warping direction. Additionally, there are two sets of diagonal threads both of which run alternatively: (a) between two needle loops of neighboring wales and (b) between two needle loops of successive stitch rows. Laid-in warp threads may be provided between needle loops of adjacent wales. There is thus provided a fabric having higher rigidity in all directions.

Claims

1. A fabric enmeshed by stitched ground ware, comprising:

a plurality of wales of warp thread stitched by rows;

a plurality of parallel, inlaid weft threads, each laid-in across said wales and between two adjacent rows of stitch loops in said warp thread, said rows of stitch loops being transverse to said warp thread; and

a first and second plurality of diagonally inlaid threads, said first plurality crossing said second plurality, each of the inlaid threads of said first and second plurality running alternatively and repetitively;

(a) between two stitch loops of a corresponding adjacent pair of said wales and (b) between two stitch loops of two successive rows of stitch loops of said warp threads.

2. A fabric according to claim 1 further comprising:

a plurality of inlaid longitudinal threads, each laid-in between stitch loops of a corresponding adjacent pair of wales.

3. A fabric according to claim 2 wherein said first and second plurality of diagonally inlaid threads are sandwiched between said weft threads and said longitudinal threads.

4. A fabric according to claim 2 wherein said longitudinal threads are sandwiched between said weft threads and said diagonally inlaid threads.

5. A fabric according to claim 2 wherein said wales of warp thread are formed into a plurality of chain stitches.

6. A fabric according to claim 2 wherein said wales of warp thread are formed into a plurality of tricot stitches.

7. A fabric according to claim 1 wherein said weft threads and said diagonally inlaid threads are positioned to leave openings that allow stitching of said warp threads without piercing of said weft thread or said diagonally inlaid thread.

8. A fabric according to claim 7 wherein said weft threads and said diagonally inlaid threads are substantially thicker and stronger than said warp threads.

9. A fabric according to claim 8 wherein said fabric is coated with a synthetic material to form a laminated structure.

10. A method for forming a fabric with warp thread, weft thread and diagonal thread, comprising the steps of:

laying-in said weft threads in a given series of transverse rows;

laying-in said diagonal thread in a first series of diagonal rows, each crossing said weft threads at an acute angle;

laying-in said diagonal thread in a second series of diagonal rows, each crossing said weft threads at an acute angle, the diagonal thread of said second series crossing that of said first series; and

stitching said warp thread about said weft and diagonal threads to form a ground ware, said stitching forming spaced stitch loops between the diagonal thread of both said first and second series.

11. A method according to claim 10 employing longitudinal thread and further comprising the step of:

laying-in said longitudinal thread in a predetermined series of longitudinal rows, the step of stitching said warp threads being performed about said longitudinal thread.

12. A method according to claim 11 wherein said diagonal threads are sandwiched between said weft threads and said longitudinal threads.

13. A method according to claim 11 wherein said longitudinal threads are sandwiched between said weft threads and said diagonal threads.

14. A method according to claim 11 wherein the step of stitching said warp thread is conducted so as to form chain stitches.

15. A method according to claim 11 wherein the step of stitching said warp thread is conducted so as to form tricot stitches.

16. A method according to claim 10 wherein the step of stitching said warp threads is conducted without piercing said weft thread or said diagonal thread.

17. A method according to claim 16 further including the step of:

coating the warp, diagonal and weft threads with a synthetic material to form a laminate.