LOW FRICTION COATINGS FOR ADHESIVE DRESSINGS AND METHOD OF MANUFACTURE THEREOF

• US 20070179419A1
• Filed: 01/29/2007
• Published: 08/02/2007
• Est. Priority Date: 01/27/2006
• Status: Abandoned Application

• Current Assignee: World Properties Incorporated
• Original Assignee: World Properties Incorporated
• Inventors: Simpson, Scott S.
• Application Number:
  US11/668,259
• Publication Number:
  US 20070179419A1
• Time in Patent Office: Days
• US Class Current: 602/57
• CPC Class Codes: A61F 13/0223 characterized by parametric properties of the fluid retention layer, e.g. absorbency, wicking capacity, liquid distribution
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention layer
• CPC Class Codes: A61F 13/0289 manufacturing of adhesive dressings
• CPC Class Codes: A61F 15/004 Bandage protectors
• CPC Class Codes: A61F 2013/00263 vapour permeability >500 g/m2/24h
• CPC Class Codes: A61F 2013/00314 with surface treatments
• CPC Class Codes: A61F 2013/00582 Properties of backing
• CPC Class Codes: A61F 2013/0074 containing foams
• CPC Class Codes: A61F 2013/00748 with hydrocolloids or superabsorbers wound bandages with alginate A61F2013/00229; plasters with cyano-acrylic adhesive A61F2013/00459; plasters for treating burn with hydrogel A61F2013/00523; adhesive for plasters, with hydrogel A61F2013/00676; water-based A61F2013/00689; for use on mucosae A61F2013/00714; for use on wounds A61F2013/00719; with absorbent adhesives A61F2013/00757; with fumed silica A61F2013/00787; with viscoelastic oil-elastomer gel A61F2013/00893
• CPC Class Codes: A61F 2013/00876 vapour permeability >500 g/mg/24h
• CPC Class Codes: A61L 15/42 Use of materials characterised by their function or physical properties liquid bandages A61L26/00
• CPC Class Codes: A61L 15/58 Adhesives

Abstract

An adhesive dressing comprising a conformable, elastomeric backing layer comprising a first side and a second side, a pressure-sensitive adhesive disposed on the first side, and a topcoat applied to the second side, wherein the topcoat comprises a friction-reducing surface finish, wherein the coefficient of function of the topcoat is equal to or less than 0.6 as measured by ASTM 1894-95.

Claims

1. An adhesive dressing, comprising

a conformable, elastomeric backing layer comprising a first side and a second side opposite the first side;

a pressure-sensitive adhesive layer disposed on the first side of the backing layer; and

,

a topcoat having an inner surface and an outer surface, wherein the inner surface is disposed on the second side of the backing layer and wherein the outer surface comprises a friction-reducing surface finish having a coefficient of friction equal to or less than about 0.6 as measured by ASTM 1894-95.

2. The adhesive dressing of claim 1, wherein the friction-reducing surface finish has a coefficient of friction equal to or less than about 0.5 as measured by ASTM 1894-95.

3. The adhesive dressing of claim 1, wherein the friction-reducing surface finish has a coefficient of friction equal to or less than about 0.4 as measured by ASTM 1894-95.

4. The adhesive dressing of claim 1, wherein the friction-reducing surface finish is a matte finish.

5. The adhesive dressing of claim 1, wherein the friction-reducing surface finish has an average surface roughness of approximately equal to or less than about 5.0 as measured by ASME/ANSI B46.1 (1995).

6. The adhesive dressing of claim 1, wherein the backing layer is in the form of a foam.

7. The adhesive dressing of claim 6, wherein the foam comprises a polyurethane or a siloxane polymer.

8. The adhesive dressing of claim 1, wherein the backing layer has a moisture vapor transmission rate equal to or greater than 500 grams water per square meter per 24 hrs as determined by ASTM E96 at 100°

F. and 90 relative % humidity.

9. The adhesive dressing of claim 1, wherein the topcoat comprises a (meth)acrylate, silicone, or epoxy polymer.

10. The adhesive dressing of claim 13, wherein the outer surface of the topcoat is textured.

11. The adhesive dressing of claim 1, wherein the second side of the backing layer is textured.

12. The adhesive dressing of claim 1, wherein the second side of the backing layer is textured, and further wherein the topcoat substantially conforms to the textured surface.

13. The adhesive dressing of claim 1, further comprising a treatment layer disposed on a side of the pressure-sensitive adhesive layer opposite the backing layer.

14. The adhesive dressing of claim 13, wherein the treatment layer comprises an absorbent pad.

15. The adhesive dressing of claim 13, wherein the treatment layer comprises a drug release layer.

16. The adhesive dressing of claim 1, further comprising friction-reducing media disposed within or on the topcoat.

17. A method of making an adhesive dressing, comprising

forming a backing layer;

disposing a topcoat having an inner surface and an outer surface onto a first side of the backing layer, wherein the inner surface is disposed on the backing layer; and

,

wherein the outer surface comprises a friction-reducing surface finish having a coefficient of friction equal to or less than about 0.6 as measured by ASTM 1894-95.

18. The method of claim 17, further comprising disposing a pressure-sensitive adhesive layer onto a side of the backing layer opposite the first side.

19. The method of claim 17 wherein the outer surface has a matte finish.

20. A method of making an adhesive dressing, comprising

disposing a curable topcoat composition having an inner surface and an outer surface onto a first side of a backing layer, wherein the inner surface is disposed on the first side of the backing layer;

texturing at least a portion of the outer surface of the topcoat composition; and

curing the curable topcoat composition, to provide at least a portion of the outer surface with a friction-reducing surface finish having a coefficient of friction equal to or less than about 0.6 as measured by ASTM 1894-95.

21. The method of claim 20, wherein texturing comprises contacting the outer surface with a negative of the desired texture.

22. The method of claim 21, wherein the negative is disposed on a nip roller, embossing belt, masking film, coated release paper, or a combination comprising at least one of the foregoing.

23. The method of claim 20, wherein texturing is by distributing friction reducing media on the outer surface.

24. The method of claim 20, further comprising disposing a pressure-sensitive adhesive layer onto a side of the backing layer opposite the first side.

25. A method of making an adhesive dressing, comprising

disposing a topcoat composition having an inner surface and an outer surface onto a first side of a backing layer, wherein the inner surface is disposed on the first side of the backing layer;

texturing at least a portion of the outer surface of the topcoat composition to provide at least a portion of the outer surface with a friction-reducing surface finish having a coefficient of friction equal to or less than about 0.6 as measured by ASTM 1894-95.

26. The method of claim 25, further comprising disposing a pressure-sensitive adhesive layer onto a side of the backing layer opposite the first side.

27. A method of making an adhesive dressing, comprising

disposing a topcoat composition having an inner surface and an outer surface onto a first side of a backing layer, wherein the inner surface is disposed on the first side of the backing layer, wherein the first side of the backing layer is textured, and wherein at least a portion of the outer surface of the topcoat composition has a friction-reducing surface finish having a coefficient of friction equal to or less than about 0.6 as measured by ASTM 1894-95.

28. The method of claim 27, wherein the first side of the backing layer is textured by casting a backing layer composition onto a negative of the textured surface.

29. The method of claim 28, wherein the negative of the textured surface is on a release layer.