CENTRAL-OPENING KNITTING

• US 20130053746A1
• Filed: 08/23/2012
• Published: 02/28/2013
• Est. Priority Date: 08/23/2011
• Status: Abandoned Application

• Current Assignee: Zodiac Coating SAS (Safran SA)
• Original Assignee: Zodiac Automotive Division
• Inventors: Roland, Sophie, Guillo, Jean-Roger
• Application Number:
  US13/592,680
• Publication Number:
  US 20130053746A1
• Time in Patent Office: Days
• US Class Current: 602/44
• CPC Class Codes: A61F 13/0226 characterised by the support layer
• CPC Class Codes: A61F 13/0236 characterised by the application/handling support layer
• CPC Class Codes: A61F 13/0253 characterized by the adhesive material
• CPC Class Codes: A61F 13/0289 manufacturing of adhesive dressings
• CPC Class Codes: Y10T 428/24818 Knitted, with particular or differential bond sites or intersections
• CPC Class Codes: Y10T 442/10 Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]

Abstract

A composite material is provided that includes an open knitted textile support including at least one area free of stitches and/or in which the stitch density is at least five times less than in the rest of the support and a silicone impregnating the support. A method of fabrication of the composite material also is provided, and a medical device including the composite material.

Claims

1. A composite material (1, 8, 8′

) including an open knitted textile support (2, 2′

) including an array of stitches (4, 4′

), said support including at least one area (5, 5′ and

/or 6′

) free of stitches in which the stitch density is at least five times less than in the rest of the support and a silicone (3) impregnating said support.

2. The material of claim 1, wherein the knitted textile support (2, 2′

) includes elastic filaments.

3. The material of claim 1, wherein the knitted textile support (2, 2′

) includes coated or textured threads.

4. The material of claim 1, wherein the at least one area free of stitches or in which the stitch density is at least five times less than in the rest of the support has a shape chosen from the following:

circular, rectangular, square or oval.

5. The material of claim 1, wherein said silicone is an adhesive silicone.

6. The material of claim 1, characterized in that said silicone extends continuously over the surface of the support.

7. The material of claim 1, characterized in that said silicone extends discontinuously over the surface of the support.

8. A medical device for protecting a skin area, including the material of claim 1.

9. The medical device of claim 8, further comprising an absorbent mass (12) disposed in the area free of stitches or in which the stitch density is at least five times less than in the rest of the support of the textile support.

10. The medical device of claim 8, further comprising an exterior membrane (11).

11. A method of fabricating the composite material of claim 1, including the steps of:

knitting on a Jacquard raised hook device a textile support including areas free of stitches or in which the stitch density is at least five times less than in the rest of the the support,

depositing a silicone pre-polymer solution on at least one face of said textile support so as to impregnate said support, and

polymerizing said pre-polymer solution.

12. The method of claim 11, characterized in that the step of depositing the pre-polymer solution is carried out by coating with a squeegee or roller or by pad impregnation.

13. The method of claim 11, further comprising unblocking openings of said textile support filled with the pre-polymer solution.