Abstract An abrasion and soil resistant microporous medical adhesive tape comprising an interlayer comprising a web of intermingled fibers, said interlayer having a porous structure capable of passing perspiration from human skin therethrough; a layer of porous pressure-sensitive adhesive which is nonirritating to human skin on one surface of said interlayer and a thermoplastic film comprising a thermoplastic which is insoluble in water on the other surface of said interlayer, said film being self-sustaining and having about five to 40 pores per square millimeter of film surface, said pores having an average area of no more than about 0.01 square millimeter and constituting about 5 to about 40 percent of the total area of said film. The fibers of the interlayer of the tape which are adjacent to the film are water repellent at least to the extent that water penetrates the fibers with difficulty.
The tape of claim 1 which has a Gurley densometer porosity of less than 1,500 seconds per 300 cubic centimeters of air.
Claim 2
Dependent Claim
20 words
The tape of claim 2 wherein said interlayer comprises a nonwoven web of polyester fibers bonded with a bonding agent.
Claim 3
Dependent Claim
11 words
The tape of claim 3 wherein said thermoplastic film comprises polyurethane.
Claim 4
Dependent Claim
34 words
The tape of claim 4 wherein said bonding agent is an ethylene/acetate copolymer and is present in said interlayer at from 60 to 75 percent by weight of the total weight of the interlayer.
Claim 5
Dependent Claim
24 words
A medical bandage comprising an adhesive tape of claim 5 with a compress attached to a portion of the adhesive surface of said tape.
Claim 6
Dependent Claim
20 words
The tape of claim 2 wherein said interlayer comprises a nonwoven web of rayon fibers bonded with a bonding agent.
Claim 7
Dependent Claim
11 words
The tape of claim 7 wherein said thermoplastic film comprises polyurethane.
Claim 8
Dependent Claim
14 words
The tape of claim 8 wherein said bonding agent is a rubbery acrylate polymer.
Claim 9
Dependent Claim
24 words
A medical bandage comprising an adhesive tape of claim 1 with a compress attached to a portion of the adhesive surface of said tape.