Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
An adhesive composite comprising in combination a predominantly crystalline isotactic polypropylene film backing prepared from a resin comprising by weight a) 65 to 98 percent of isotactic polypropylene, b) 1 to 20 percent of a polyethylene/ethyl vinyl acetate copolymer comprising 5 to 40 percent by weight of ethyl vinyl acetate, and c) 1 to 15 percent of a moisture vapor transmission rate enhancing material, and a layer of normally tacky, pressure-sensitive adhesive, said backing having an embossed pattern on at least one side that provides for varied thicknesses of the backing such that the backing has an overall thickness of 0.075 to 0.115 mm. with regions of the backing having a thickness of less than one-half the overall thickness of the backing.
Claim 2
Dependent Claim
23 words
An adhesive composite of claim 1, wherein said polyethylene/ethyl vinyl acetate copolymer comprises 25 to 35 percent by weight of ethyl vinyl acetate.
Claim 3
Dependent Claim
57 words
An adhesive composite of claim 1, wherein said film backing comprises by weight a) 78 to 86 percent of isotactic polypropylene, b) 8 to 12 percent of a polyethylene/ethyl vinyl acetate copolymer comprising 25 to 35 percent by weight of ethyl vinyl acetate, and c) 8 to 12 percent of a moisture vapor transmission rate enhancing material.
Claim 4
Dependent Claim
35 words
An adhesive composite of claim 1, wherein said moisture vapor transmission rate enhancing material is selected from the group consisting of glass beads, silica powder, polyvinyl alcohol, poly(N-vinyl pyrrolidone), acrylic acid homopolymer or cellulosic fibers.
Claim 5
Dependent Claim
18 words
An adhesive composite of claim 1, wherein said moisture vapor transmission rate enhancing material is a polyvinyl alcohol.
Claim 6
Dependent Claim
17 words
An adhesive composite of claim 1, wherein said moisture vapor transmission rate enhancing material is poly(N-vinyl pyrrolidone).
Claim 7
Dependent Claim
22 words
An adhesive composite of claim 1, wherein said film backing has been exposed to an organic solvent before application of the adhesive.
Claim 8
Dependent Claim
14 words
An adhesive composite of claim 1, wherein said adhesive is cast from a solvent.
Claim 9
Dependent Claim
16 words
An adhesive composite of claim 1, wherein said embossed pattern is a pattern of truncated pyramids.
Claim 10
Dependent Claim
21 words
An adhesive composite of claim 1, wherein 20% of the film backing has a thickness of no more than 0.05 mm.
Claim 11
Dependent Claim
20 words
An adhesive composite of claim 1, wherein 20% of the backing has a thickness of no more than 0.03 mm.
Claim 12
Dependent Claim
28 words
An adhesive composite of claim 1, which is an elongate strip of normally tacky, pressure-sensitive adhesive tape wound convolutely upon itself about a core to form a roll.