Air permeable pressure-sensitive adhesive tapes

• US 20060154546A1
• Filed: 08/16/2005
• Published: 07/13/2006
• Est. Priority Date: 06/25/2003
• Status: Abandoned Application

• Current Assignee: Andover Healthcare Incorporated (Milliken & Company)
• Original Assignee: Andover Coated Products Incorporated
• Inventors: Piaseczynski, Stanley J., Murphy, Thomas S.
• Application Number:
  US11/204,736
• Publication Number:
  US 20060154546A1
• Time in Patent Office: Days
• US Class Current: 442/286
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention layer
• CPC Class Codes: A61F 13/0269 Tapes for dressing attachment for stoma bags A61F5/443; for nappies or sanitary towels A61F13/58; wound closure tapes A61B17/085; for surgical drapes A61B46/00; attaching catheters A61M25/02
• CPC Class Codes: B32B 23/10 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 2307/402 Coloured
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2307/414 Translucent
• CPC Class Codes: B32B 2307/724 Permeability to gases, adsorption
• CPC Class Codes: B32B 2310/14 Corona, ionisation, electrical discharge, plasma treatment
• CPC Class Codes: B32B 2317/18 Cellulose, modified cellulose or cellulose derivatives, e.g. viscose B32B2317/10, B32B2317/12, B32B2317/16 take precedence
• CPC Class Codes: B32B 2323/04 Polyethylene
• CPC Class Codes: B32B 2323/10 Polypropylene
• CPC Class Codes: B32B 2325/00 Polymers of vinyl-aromatic compounds, e.g. polystyrene
• CPC Class Codes: B32B 2327/06 PVC, i.e. polyvinylchloride
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 2377/00 Polyamides
• CPC Class Codes: B32B 2405/00 Adhesive articles, e.g. adhesive tapes
• CPC Class Codes: B32B 27/02 in the form of fibres or filaments not used
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/302 comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
• CPC Class Codes: B32B 27/304 comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/36 : comprising polyesters
• CPC Class Codes: B32B 27/40 : comprising polyurethanes
• CPC Class Codes: B32B 38/0008 : Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation heat treatment B32B38/0036
• 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 5/32 : at least two layers being foamed and next to each other
• CPC Class Codes: B32B 7/02 : Physical, chemical or physicochemical properties
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: C09J 2400/263 : in the substrate
• CPC Class Codes: C09J 2433/00 : Presence of (meth)acrylic polymer
• CPC Class Codes: C09J 7/21 : Paper; Textile fabrics
• CPC Class Codes: C09J 7/29 : Laminated material metallised plastics C09J7/22
• CPC Class Codes: Y10T 428/249953 : Composite having voids in a component [e.g., porous, cellular, etc.]
• CPC Class Codes: Y10T 428/249982 : With component specified as adhesive or bonding agent
• CPC Class Codes: Y10T 442/3065 : Including strand which is of specific structural definition
• CPC Class Codes: Y10T 442/3325 : Including a foamed layer or component
• CPC Class Codes: Y10T 442/3854 : Woven fabric with a preformed polymeric film or sheet

Abstract

A vapor permeable article includes a porous backing substrate and an open fabric applied to one surface of the backing substrate. The open fabric has a greater porosity than that of the backing substrate. The open fabric may be a woven fabric comprising warp (MD) yarns and weft (CD) yarns, and the warp yarns may be of a lower denier than the weft yarns, so as to facilitate hand-tear of the assembled article. The open fabric is coated with an adhesive in such a manner that the open fabric remains porous and vapor permeable. The backing substrate can be a woven, knit or non-woven fabric, or a porous film, such as an apertured plastic film.

Claims

1. An air permeable adhesive article comprising:

a porous backing substrate; and

an adhesive-carrying fabric applied to a surface of the backing substrate, the fabric having a porosity greater than that of the backing substrate and the adhesive of the adhesive-carrying fabric being located on the fabric in such a manner that the air permeable adhesive article has an overall air permeability of at least about 100 ft³/minute.

2. The air permeable adhesive article of claim 1, wherein the overall air permeability is at least about 125 ft³/minute.

3. The air permeable adhesive article of claim 1, wherein the overall air permeability is at least about 150 ft³/minute.

4. The air permeable adhesive article of claim 1, wherein the overall air permeability is at least about 200 ft³/minute.

13. The air permeable adhesive article of claim 1, 5, or 9, wherein the porous backing substrate is a porous film.

16. The air permeable adhesive article of claim 1, 5, or 9, wherein the fabric of the adhesive-carrying fabric layer comprises warp yarns running in the machine direction and weft yarns running in the cross direction, the weft yarns having a higher denier than the warp yarns.

17. The air permeable adhesive article of claim 16, wherein the warps yarns have a denier in the range of 20 to 80, and the weft yarns have a denier in the range of 50 to 200.

20. The air permeable adhesive article of claim 16, wherein the warps yarns have a denier in the range of about 30.

22. The air permeable adhesive article of claim 16, wherein the weft yarns have a denier in the range of about 70.

28. The air permeable adhesive article of claim 16, wherein the warps yarns have a density in the range of 9 yarns/inch to 24 yarns/inch, and the weft yarns have a density in the range of 9 yarns/inch to 18 yarns/inch.

29. The air permeable adhesive article of claim 16, wherein, the warp yarns have a denier of about 30 and a density of about 18 yarns/inch, and the weft yarns have a denier of about 70 and a density of about 12 yarns/inch.

30. The air permeable adhesive article of claim 16, wherein the article is hand-tearable in the cross direction.

33. The air permeable adhesive article of claim 1, 5, or 9, wherein an inner face of the porous backing substrate contacts and adheres to an inner face of the adhesive-carrying fabric.

34. The air permeable adhesive article of claim 33, wherein the adhesive bonds the inner face of the porous backing substrate to the inner face of the adhesive-carrying fabric.

35. The air permeable adhesive article of claim 33, wherein the porous backing substrate is an apertured plastic film.

36. The air permeable adhesive article of claim 33, wherein the porous backing substrate is an apertured plastic film and the adhesive is a pressure-sensitive adhesive.

37. The air permeable adhesive article of claim 33, wherein the porous backing substrate is an apertured plastic film and the adhesive is selected from the group consisting of:

polyacrylate adhesives, polyalphaolefin adhesives, styrene-butadiene adhesive, styrene-ethylene/butylenes adhesives, styrene-isoprene adhesives, polyvinyl acrylate adhesives, natural rubber resin adhesives, synthetic rubber resin adhesives, silicone adhesives, polydiorganosiloxane polyurea copolymer adhesives, polyurethane adhesives, urethane copolymer adhesives, and mixture and blends thereof.

38. The air permeable adhesive article of claim 33, wherein the adhesive is an acrylic resin.

43. The air permeable adhesive article of claim 1, 5, or 9, wherein the porous backing substrate is a porous film.

44. The air permeable adhesive article of claim 43, wherein the porous film comprises plastic.

45. The air permeable adhesive article of claim 43, wherein the porous film comprises a material selected from the group consisting of:

natural rubber, synthetic rubber, balata, and gutta-percha.

46. The air permeable adhesive article of claim 43, wherein the porous film comprises an elastomer selected from the group consisting of:

polybutadiene, ethylene-propylene terpolymer (EPDM rubber), styrene-butadiene copolymer, polychloroprene (neoprene), nitrile rubber, butyl rubber, polysulfide rubber, silicone rubber, polyurethane rubber, polyisobutylene, natural rubber, and acrylate rubber.

50. The air permeable adhesive article of claim 43, wherein the porous film is an apertured film.

51. The air permeable adhesive article of claim 43, wherein the porous film is an apertured plastic film.

52. The air permeable adhesive article of claim 51, wherein the plastic is polyethylene.

53. The air permeable adhesive article of claim 51, wherein the plastic is selected from the group consisting of:

polyvinyl chloride, polyproplylene, polystyrene, polyurethane and polyester (Mylar).

54. The air permeable adhesive article of claim 51, wherein the plastic comprises a polymer or a co-polymer of a monomer selected from the group consisting of:

ethylene, propylene, butylene, vinyl chloride monomer, styrene monomer, and urethane monomer.

55. The air permeable adhesive article of claim 51, wherein the apertured plastic film is corona-treated prior to assembly of the article.

56. The air permeable adhesive article of claim 50, wherein the apertured film is made from a film material that is about 10 micrometers to about 300 micrometers thick.

57. The air permeable adhesive article of claim 51, wherein the apertured plastic film is made from a plastic film that is about 0.0005 inches to about 0.010 inches (0.5 to 10 mils, 0.00127 to 0.0253 cm) thick.

58. The air permeable adhesive article of claim 57, wherein the apertured plastic film is made from a plastic film that is about 0.001 inches to about 0.005 inches (1 to 5 mils) thick.

59. The air permeable adhesive article of claim 57, wherein the apertured plastic film is made from a plastic film that is about 0.0025 inches (2.5 mils) thick.

60. The air permeable adhesive article of claim 50, wherein the apertured film has at least about 20% open area.

61. The air permeable adhesive article of claim 50, wherein the apertured film has at least about 24% open area.

62. The air permeable adhesive article of claim 50, wherein the apertured film has about 20% to about 30% open area.

67. The air permeable adhesive article of claim 51, wherein the apertured plastic film is extensible in the machine direction by at least about 10%.

5. An air permeable adhesive article comprising:

a porous backing substrate having at least about 20% open area; and

an adhesive-carrying fabric applied to a surface of the backing substrate, the fabric of the adhesive-carrying fabric having at least about 25% open area before application of the adhesive.

6. The air permeable adhesive article of claim 5, wherein the fabric of the adhesive-carrying fabric layer has at least about 30% open area before application of the adhesive.

7. The air permeable adhesive article of claim 5, wherein the fabric of the adhesive-carrying fabric layer has at least about 40% open area before application of the adhesive.

8. The air permeable adhesive article of claim 5, wherein the fabric of the adhesive-carrying fabric layer has at least about 50% open area before application of the adhesive.

9. An air permeable adhesive article comprising:

a porous backing substrate having at least about 20% open area; and

an adhesive-carrying fabric applied to a surface of the backing substrate, the fabric having a porosity before application of the adhesive that is greater than that of the backing substrate, and the adhesive-carrying carrying fabric layer having an overall open area of at least about 15% of the surface area of the assembled article.

10. The air permeable adhesive article of claim 9, wherein the adhesive-carrying carrying fabric layer having an overall open area of at least about 20% of the surface area of the assembled article.

11. The air permeable adhesive article of claim 9, wherein the adhesive-carrying carrying fabric layer having an overall open area of at least about 25% of the surface area of the assembled article.

12. The air permeable adhesive article of claim 9, wherein the adhesive-carrying carrying fabric layer having an overall open area of at least about 30% of the surface area of the assembled article.

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70. An article comprising:

a porous backing substrate; and

an adhesive-carrying fabric applied to a surface of the backing substrate, the fabric having a porosity greater than that of the backing substrate and the adhesive of the adhesive-carrying fabric located on the fabric in such a manner that the fabric remains porous.

74. The article of claim 70 or 71, wherein the adhesive-carrying fabric is selected from the group consisting of woven, non-woven and knit fabrics.

75. The article of claim 70 or 71, wherein the porous backing substrate is a porous film.

76. The article of claim 75, wherein the porous film is an apertured plastic film.

77. The article of claim 75, wherein the apertured plastic film is polyethylene or a copolymer thereof.

71. An article comprising:

a porous backing substrate; and

an adhesive-carrying fabric applied to a surface of the backing substrate, the fabric having a porosity greater than that of the backing substrate and comprising warp yarns running in the machine direction and weft yarns running in the cross direction, the weft yarns having a higher denier than the warp yarns, and the adhesive of the adhesive-carrying fabric located on the fabric in such a manner that the fabric remains porous.

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