Air permeable pressure-sensitive adhesive tapes
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.
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 ft 3 /minute.
2 . The air permeable adhesive article of claim 1 , wherein the overall air permeability is at least about 125 ft 3 /minute.
3 . The air permeable adhesive article of claim 1 , wherein the overall air permeability is at least about 150 ft 3 /minute.
4 . The air permeable adhesive article of claim 1 , wherein the overall air permeability is at least about 200 ft 3 /minute.
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.
13 . The air permeable adhesive article of claim 1 , 5 , or 9 , wherein the porous backing substrate is a porous film.
14 . (canceled)
15 . (canceled)
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.
18 . (canceled)
19 . (canceled)
20 . The air permeable adhesive article of claim 16 , wherein the warps yarns have a denier in the range of about 30.
21 . (canceled)
22 . The air permeable adhesive article of claim 16 , wherein the weft yarns have a denier in the range of about 70.
23 . (canceled)
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25 . (canceled)
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27 . (canceled)
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.
31 . (canceled)
32 . (canceled)
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.
39 . (canceled)
40 . (canceled)
41 . (canceled)
42 . (canceled)
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.
47 . (canceled)
48 . (canceled)
49 . (canceled)
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.
63 . (canceled)
64 . (canceled)
65 . (canceled)
66 . (canceled)
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%.
68 . (canceled)
69 . (canceled)
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.
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.
72 . (canceled)
73 . (canceled)
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.
78 . (canceled)
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