Knitted device with loops, in particular for forming the female part of a self-adhesive fastener for attaching a motor vehicle seat cover

Patent metadata

Field	Value
Publication number	US-11946176-B2
Application number	US-202017601598-A
Country	US
Kind code	B2
Filing date	Mar 31, 2020
Priority date	Apr 8, 2019
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

Knitted device (5), in particular a knitted fabric, comprising a first area (6), in particular a rectangular area, from which loops (9) project and at least one second area (7, 8), in particular a contiguous rectangular area, preferably two contiguous areas (7, 8) on either side of the first area (6), the second contiguous border area(s) not including loops (9) and being designed to allow the knitted device to be attached to a cover (4) designed to cover a molded object (1), in particular a motor vehicle seat, for example by stitching, while the first area (6) with loops (9) is designed to cooperate with hooks (14) that project from the molded object (1), characterized in that means are provided to prevent or combat the fraying of the threads of the knitted device (5) forming the one or more second border areas (7, 8).

First claim

The invention claimed is:

1. Knitted device, comprising a knitting fabric having a first area from which loops project and at least one second selvedge area the at least one second selvedge area not comprising loops and being designed to allow the knitted device to be attached to a cover designed to cover a moulded object while the first area with loops is designed to cooperate with hooks that project from the moulded object, the knitted fabric comprising a back formed of interweaving loop wale threads, or columns of stitches, and connecting threads in the weft direction, and, in the first area, of loop threads knitted in the back, each loop being formed by two knitted legs in the back, two strands leaving the two legs and a top connecting the two strands, wherein means are provided to prevent or combat fraying of the threads of the knitted device forming the at least one second selvedge area; and
wherein the connecting threads in the weft direction of the back extend in a back-and-forth movement in a transverse direction so as to at least circumvent, block or form a zigzag around, in the machine direction, a number N of rows of columns of stitches where N is between 2 and 5, and this applies across the entire transverse extent of the back of each of the at least one second selvedge area, with the exception of a number N-1 of successive end rows of columns of stitches.

2. Knitted device according to claim 1 , characterised in that the means to prevent or combat fraying entail covering the at least one second selvedge area with a coating which provides the at least one second selvedge area considerable dimensional stability and thus prevents fraying of said at least one second selvedge area.

3. Knitted device according to claim 1 , characterised in that N is equal to 3.

4. Knitted device according to claim 1 , characterised in that anti-fraying means are used such that, a curve giving a force needed to deform the knitted fabric in the crosswise direction (CD) as a function of the deformation between an origin of the coordinates (o, o) and a breaking point R which is at a sudden falling-off of the curve, always remains beneath a straight line connecting the origin and said breaking point R.

5. Knitted device according to claim 4 , characterised in that the value of the force at 25% deformation is less than 150 Newtons.

6. Knitted device according to claim 4 , characterised in that the value of the force at 50% deformation is less than 350 Newtons.

7. Knitted device according to claim 1 , characterised in that it comprises a first central area with loops and two second contiguous selvedge areas on the left and right.

8. Knitted device according to claim 1 , characterised in that it is produced on a three-bar loom.

9. Knitted device according claim 1 , characterised in that the loop weave is a 10/12// closed-stitch loop weave.

10. Knitted device according to claim 1 , characterised in that the loop weave is a 01/21// open loop weave.

11. Moulded object comprising a block made from moulded material having the same shape as the object and a cover covering the block, the cover being attached to the block by cooperation between hooks protruding from the outer surface of the moulded object, and knitted devices according to claim 1 which are attached to the cover.

12. Knitted device, comprising a knitting fabric having a first area from which loops project and at least one second selvedge area, the at least one second selvedge area not comprising loops and being designed to allow the knitted device to be attached to a cover designed to cover a moulded object, while the first area with loops is designed to cooperate with hooks that project from the moulded object, the knitted fabric comprising a back formed of interweaving loop wale threads, or columns of stitches, and connecting threads in the weft direction, and, in the first area, of loop threads knitted in the back, each loop being formed by two knitted legs in the back, two strands leaving the two legs and a top connecting the two strands, wherein means are provided to prevent or combat fraying of the threads of the knitted device forming the at least one second selvedge area; and
wherein said knitted fabric is produced on a three-bar loom.

13. Moulded object comprising a block made from moulded material having the same shape as the object and a cover covering the block, the cover being attached to the block by cooperation between hooks protruding from the outer surface of the moulded object, and knitted devices according to claim 12 which are attached to the cover.

14. Knitted device according to claim 4 , characterised in that the value of the force at 25% deformation is less than 125 Newtons.

15. Knitted device according to claim 4 , characterised in that the value of the force at 25% deformation is less than 100 Newtons.

16. Knitted device according to claim 4 , characterised in that the value of the force at 25% deformation is less than 50 Newtons.

17. Knitted device according to claim 4 , characterised in that the value of the force at 25% deformation is less than 35 Newtons.

18. Knitted device according to claim 4 , characterised in that the value of the force at 50% deformation is less than 300 Newtons.

19. Knitted device according to claim 4 , characterised in that the value of the force at 50% deformation is less than 225 Newtons.

20. Knitted device according to claim 4 , characterised in that the value of the force at 50% deformation is less than 190 Newtons.

Assignees

• Aplix Sa

Inventors

• Deloge Virginie Francette Nicole
• Moinard Nathalie Christine Michèle Marie
• Torlay Laurent Jean Michel

Classifications

• D04B21/02 Primary

  Pile fabrics or articles having similar surface features · CPC title

• D10B2403/0112

  One smooth surface, e.g. laminated or coated · CPC title

• D10B2403/0311

  Small thickness fabric, e.g. ribbons, tapes or straps · CPC title

• D10B2505/08

  Upholstery, mattresses · CPC title

• D10B2501/0632

  of the touch-and-close type · CPC title