Fastener Systems for Seat Cushions

• US 20080088169A1
• Filed: 10/11/2007
• Published: 04/17/2008
• Est. Priority Date: 10/17/2006
• Status: Abandoned Application

• Current Assignee: Velcro Industries BV (Chartwell Industries Ltd)
• Original Assignee: Velcro Industries BV (Chartwell Industries Ltd)
• Inventors: Janzen, Daniel Lee, Line, Kevin Keith
• Application Number:
  US11/870,720
• Publication Number:
  US 20080088169A1
• Time in Patent Office: Days
• US Class Current: 297/463.2
• CPC Class Codes: A44B 18/0076 Adaptations for being fixed to a moulded article during moulding
• CPC Class Codes: B29C 33/16 using magnetic means
• CPC Class Codes: B29C 44/1261 Avoiding impregnation of a preformed part
• CPC Class Codes: B60N 2/7017 characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for
• CPC Class Codes: B60N 2/72 Attachment or adjustment thereof

Abstract

Touch fasteners are provided, including a sheet-form base, a plurality of male fastener elements extending upwardly from the sheet-form base, and a foam, bonded to the sheet-form base. Seat cushions and methods of forming seat cushions are also provided.

Claims

1. A fastener product comprising:

a fastener tape carrying male fastener elements on a first side,

a foam layer bonded to a second, opposite side of the fastener tape, and

a polymeric film having a surface energy of at least 35 dynes/cm adjacent the foam layer and exposed for contact by a liquid polymer during molding.

2. The fastener product of claim 1 wherein the polymeric film has a surface energy greater than 45 dynes/cm.

3. The fastener product of claim 1 wherein the polymeric film is selected from the group consisting of polyurethane films, nylon films and polyester films.

4. The fastener product of claim 1 wherein the fastener elements are integrally molded with a sheet-form base.

5. The fastener product of claim 1 further including a fabric reinforcement layer.

6. The fastener product of claim 5 wherein the fabric reinforcement layer is interposed between the foam layer and the hook tape.

7. The fastener product of claim 1 wherein the film is wider than the foam layer.

8. The fastener product of claim 1 wherein the fastener tape comprises a base having a predetermined width between longitudinal edges, the foam layer having a width greater than the predetermined width of the base, such that edges of the foam layer extend beyond the longitudinal edges of the base.

9. A method of making a foam bun, the method comprising:

providing a fastener product comprising a fastener tape carrying male fastener elements on a first side, a foam layer bonded to a second, opposite side of the fastener tape, and a polymeric film having a surface energy of at least 35 dynes/cm adjacent the foam layer and exposed for contact by a liquid polymer during molding;

engaging the film with an upper trench edge, and compressing the foam between trench walls to sealingly position the fastener tape in a trench in a mold cavity; and

delivering a liquid polymer to the mold cavity.

10. The method of claim 9 wherein the polymeric film has a surface configured so as not to disrupt flow of liquid polymer over the film during molding.

11. The method of claim 9 further comprising positioning the fastener tape so that the surface of the polymeric film is even with a top surface of the trench.

12. The method of claim 9 wherein the polymeric film has a non-porous surface.

13. The method of claim 9 wherein the trench has, in cross-section, a stepped undercut configuration.

14. The method of claim 10 wherein the polymeric film has a surface energy greater than 35 dynes/cm.

15. The method of claim 9 wherein the polymeric film is selected from the group consisting of polyurethane films, nylon films and polyester films.

16. The method of claim 9 wherein the fastener elements are integrally molded with a sheet-form base.

17. The method of claim 9 further including a fabric reinforcement layer.

18. The method of claim 17 wherein the fabric reinforcement layer is interposed between the foam layer and the hook tape.

19. The method of claim 9 wherein the film is wider than the foam layer.

20. The method of claim 9 wherein the fastener tape comprises a base having a predetermined width between longitudinal edges, the foam layer having a width greater than the predetermined width of the base, such that edges of the foam layer extend beyond the longitudinal edges of the base.