Process for molding cloth including a fabric layer, the stitches thereof having never been thermally set and molding a cloth-covered foam filled product

• US 4,247,348 A
• Filed: 03/19/1979
• Issued: 01/27/1981
• Est. Priority Date: 03/19/1979
• Status: Expired due to Term

• Current Assignee: Sears Manufacturing Co.
• Original Assignee: Sears Manufacturing Co.
• Inventors: Lischer, James F.
• Primary Examiner(s): Anderson, Philip
• Application Number:
  US06/022,593
• Time in Patent Office: 680 Days
• Field of Search: 264/46.8, 264/46.6, 264/257, 264/322, 428/425, 428/315, 156/29, 156/245
• US Class Current: 156/79
• CPC Class Codes: B29C 44/146 Shaping the lining before foaming
• CPC Class Codes: B29C 51/145 having at least one layer of textile or fibrous material combined with at least one plastics layer
• CPC Class Codes: B29K 2313/00 Use of textile products or fabrics as reinforcement B29K2105/06 takes precedence
• CPC Class Codes: B29L 2009/00 Layered products
• CPC Class Codes: B29L 2031/751 Mattresses, cushions upholstery B29L2031/58
• CPC Class Codes: B32B 27/065 of foam
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 5/245 another layer next to it being a foam layer
• CPC Class Codes: B32B 5/26 another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: D06N 7/0026 obtained by moulding, e.g. moulding table (tapis moule)

Abstract

A method of molding cloth. A special multi-layer cloth is drawn into a mold by means of a vacuum between the cloth and the mold. The cloth includes a fabric layer, stitches of the fabric having never been thermally set, a polyurethane foam layer and a polyvinyl chloride film layer bonded together. After the cloth has conformed to the contours of the mold, the shape of the cloth is fixed to maintain the mold contours. To this end, the cloth may be heated, or polyurethane foam may be poured into the mold and allowed to expand.

Claims

1. A process for molding cloth comprising the steps of:

drawing the cloth into a mold, the cloth including a fabric layer having a heat-fixable fiber, stitches of the fabric having never been thermally set, and an elastic composition layer bonded to the fabric layer; and

fixing the shape of the cloth to maintain the mold contours.

8. A process as in claim 1, 5 or 6 wherein the elastic composition layer has a low elastic recovery after molding to facilitate the retention of the molded shape of the cloth.

9. The process as in claim 1, 2, 5 or 7 wherein the elastic composition layer includes a flexible foam layer formed from a polymer selected from the group consisting of urethane, vinyl chloride, polyvinyl chloride, polychloroprene and rubber.

10. A process as in claim 1, 5 or 7 wherein the elastic composition layer comprises:

a flexible foam layer bonded to the fabric layer; and

an elastic film bonded to the foam layer.

11. The process as in claim 10 wherein the flexible foam layer is formed from a polymer selected from the group consisting of urethane, vinyl chloride, polyvinyl chloride, polychloroprene and rubber.

12. A process as in claim 1, 5 or 6 wherein the elastic composition layer includes a thermoplastic film layer.

13. A process as in claim 12 wherein the film layer is formed from a polymer selected from the group consisting of vinyl chloride, polyvinyl chloride, polyurethane, synthetic rubber, natural rubber, a mixture of natural and synthetic rubber, neoprene basis composition, and acrylic acid basis composition.

14. A process as in claim 1, 5 or 7 further comprising the step of casting a flexible foam layer to an elastic film to form the elastic composition layer.

15. A process as in claim 1, 5 or 7 wherein the fabric layer is formed from the group consisting of polyamide, polyester, polyvinyl chloride, polyvinyl chloride copolymer, wool, cotton and combinations thereof.

16. A process as in claim 1, 5 or 7 wherein:

the process further comprises the step of bonding a flexible foam layer to a thermoplastic film layer, and bonding the foam layer to the fabric layer in order to form the cloth.

19. A process as in claim 1, 5 or 17 wherein the drawing step includes the step of creating a vacuum between the cloth and the mold to thereby conform the cloth to the shape of the mold.

20. A process as in claim 1, 3, 5 or 17 wherein the fixing step comprises the step of pouring foam into the mold.

2. A process for molding cloth comprising the steps of:

drawing the cloth into a mold, the cloth including a fabric layer having a heat-fixable fiber, stitches of the fabric having never been thermally set, and an elastic composition layer bonded to the fabric layer, the elastic composition layer including a film layer; and

fixing the shape of the cloth to maintain the mold contours.

3. A process for molding cloth comprising the steps of:

drawing the cloth into a mold, the cloth including a fabric layer having a heat-fixable fiber, stitches of the fabric having never been thermally set, and an elastic composition layer bonded to the fabric layer, the elastic composition including a flexible foam layer and a film layer; and

fixing the shape of the cloth to maintain the mold contours including heating the cloth.

4. A process as in claim 3 further comprising the step of preheating the cloth prior to the drawing step.

5. A process for molding cloth comprising the steps of:

drawing the cloth into a mold, the cloth including a fabric layer having a heat-fixable fiber, stitches of the fabric having never been thermally set, and an elastic composition layer bonded to the fabric layer; and

fixing the shape of the cloth to maintain the mold contours, including heating and cooling the cloth.

6. A process for molding cloth comprising the steps of:

preheating the cloth, the cloth including a fabric layer having a heat-fixable fiber, stitches of the fabric having never been thermally set, and an elastic composition layer bonded to the fabric layer, the elastic composition layer including a film layer,

drawing the cloth into the a mold; and

fixing the shape of the cloth to maintain the mold contours, including heating and cooling the cloth.

7. A process for forming a cloth-covered item comprising the steps of:

drawing the cloth in a mold, the cloth including a fabric layer having a heat-fixable fiber, stitches of the fabric having never been thermally set, and an elastic composition layer bonded to the fabric layer; and

fixing the shape of the cloth to maintain the mold contours, including pouring foam into the mold.

17. A process for molding cloth comprising the steps of:

bonding a flexible foam layer to a film layer, the foam layer and film layer forming an elastic composition layer;

bonding the foam layer to a fabric layer having a heat-fixable fiber, stitches of the fabric having never been thermally set, the cloth comprising the foam layer, film layer and fabric layer;

drawing the cloth into a mold; and

fixing the shape of the cloth to maintain the mold contours.

18. A process as in claim 2, 6 or 17 wherein the film layer formed from a polymer is selected from the group consisting of vinyl chloride, polyvinyl chloride, polyurethane, synthetic rubber, natural rubber, a mixture of natural and synthetic rubber, neoprene-basis composition, and acrylic acid basis composition.

21. A process for forming a cloth-covered item comprising the steps of:

bonding a flexible foam layer to a film layer, the foam layer and film layer forming an elastic composition layer;

bonding the foam layer to a fabric layer having a heat-fixable fiber, the stitches of the fabric having never been thermally set, the cloth comprising the foam layer, the film layer and the fabric layer;

preheating the cloth;

drawing the cloth into a mold; and

fixing the shape of the cloth to maintain the mold contours, including heating the cloth, cooling the cloth, and pouring foam into the mold.