Pattern coated adhesive article

• US 6,495,229 B1
• Filed: 08/22/2000
• Issued: 12/17/2002
• Est. Priority Date: 09/17/1999
• Status: Expired due to Term

• Current Assignee: Avery Dennison Corporation
• Original Assignee: Avery Dennison Corporation, Johnson & Johnson Consumer Companies Incorporated (Johnson & Johnson)
• Inventors: Vesey, Kim, Carte, Theresa L., Li-Jiun Sun, Robert, Ulrich, Brett, Spilizewski, Karen L., Attia, Omar
• Primary Examiner(s): Ahmad, Nasser
• Application Number:
  US09/643,616
• Time in Patent Office: 847 Days
• Field of Search: 428/40.1, 428/41.5, 428/41.7, 428/42.1, 428/42.3, 428/137, 428/138, 428/202, 602/41, 602/47, 602/52, 602/58
• US Class Current: 428/40.1
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention layer
• CPC Class Codes: B32B 2307/724 Permeability to gases, adsorption
• CPC Class Codes: B32B 2535/00 Medical equipment, e.g. bandage, prostheses, catheter medical patches B32B2556/00
• CPC Class Codes: B32B 3/266 characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
• CPC Class Codes: B32B 37/0076 characterised in that the layers are not bonded on the totality of their surfaces
• CPC Class Codes: B32B 37/1292 selectively, e.g. in stripes, in patterns B32B37/0076 takes precedence
• 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: B32B 7/14 applied in spaced arrangements, e.g. in stripes
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/1462 Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.]
• CPC Class Codes: Y10T 428/1471 Protective layer
• CPC Class Codes: Y10T 428/1486 Ornamental, decorative, pattern, or indicia
• CPC Class Codes: Y10T 428/1495 Adhesive is on removable layer
• CPC Class Codes: Y10T 428/24322 Composite web or sheet
• CPC Class Codes: Y10T 428/24331 including nonapertured component
• CPC Class Codes: Y10T 428/2486 with outer strippable or release layer

Abstract

The invention relates to a adhesive article comprising at least one backing layer with a first and second surface and a pressure sensitive adhesive layer adhered first surface of the backing layer in a pattern, wherein the pattern of the adhesive layer has an adhesive free area of less than about 25% and wherein the adhesive article has a water vapor transmission rate of greater than about 2000 g/m²/24 hour. The invention also relates to a method of forming an adhesive article comprising (a) providing a release liner, (b) applying pressure sensitive adhesive in a pattern wherein the free adhesive area is less than 25%, and (c) applying a backing layer to the pressure sensitive adhesive. The present invention provides pattern coated adhesive bandages that strongly adhere to human skin while permitting water vapor transmission there through. Accordingly the present invention also provides methods of facilitating the healing of wounds using the pattern coated adhesive bandage. High breathability, as measured by moisture vapor transmission rate (MVTR), is desirable features of an adhesive bandage in order to prevent maceration of the skin due to trapped moisture, and to enhance comfort during wear of the bandage by the end user.

Claims

1. An adhesive article comprising at least one backing layer with a first and second surface and a pressure sensitive adhesive layer adhered to the first surface of the backing layer in a pattern, wherein the pattern of the adhesive layer comprises a continuous network of geometric shapes having an adhesive free area of from about 5% to about 20% and wherein the adhesive article has a moisture vapor transmission rate of greater than about 2000 g/m²/24 hour.

2. The article of claim 1 wherein the backing layer comprises a woven, a non-woven, or knitted fabric.

3. The article of claim 1 wherein the backing layer comprises a polymeric film or a foam.

4. The article of claim 3 wherein the backing layer comprises an apertured film or foam.

5. The article of claim 3 wherein the backing layer comprises an apertured polymeric film.

6. The article of claim 5 wherein the backing layer comprises an apertured polyolefin film.

7. The article of claim 1 wherein the pressure sensitive adhesive comprises a rubber-based or acrylic pressure sensitive adhesive.

8. The article of claim 1 wherein the pressure sensitive adhesive comprises a rubber-based adhesive.

9. The article of claim 1 further comprising a wound contacting layer adhered to the pressure sensitive adhesive.

10. The article of claim 9 wherein the wound contacting layer comprises (i) a web with fibers or (ii) gauze.

11. The article of claim 1 further comprising a silicone release liner releaseably adhered to the pressure sensitive adhesive layer.

12. The article of claim 1 further comprising a release coating on the second surface of the backing layer.

13. The article of claim 1 wherein the moisture vapor transmission rate is greater than about 3000 g/m²/24 hour.

14. The article of claim 1 wherein the moisture vapor transmission rate is greater than about 7000 g/m²/24 hour.

15. An adhesive article comprising at least one apertured polymeric backing layer having a first and second surface and a pressure sensitive adhesive layer adhered to the first surface of the backing layer in a pattern, wherein the pattern of the adhesive layer comprises a continuous network of geometric shapes having an adhesive free area of from about 5% to about 20% and wherein the adhesive article has a moisture vapor transmission rate of greater than about 2000 g/m²/24 hour.

16. The article of claim 15 wherein the backing layer is derived from an apertured polyolefin film.

17. The article of claim 15 wherein the pressure sensitive adhesive comprises a rubber-based or acrylic pressure sensitive adhesive.

18. The article of claim 15 further comprising a wound contacting layer adhered to the pressure sensitive adhesive.

19. The article of claim 15 further comprising a silicone release liner releasably adhered to the pressure sensitive adhesive.

20. The article of claim 15 further comprising a release coating on the second surface of the backing layer.

21. The article of claim 15 wherein the adhesive-free area is from about 8% to about 17%.

22. The article of claim 15 wherein the moisture vapor transmission rate is greater than about 2500 g/m²/24 hour.