Abstract A cable shielding tape comprising a metallic strip such as aluminum and a tightly adhering layer of an adhesive copolymer of an Alpha -olefin such as ethylene and an Alpha , Beta ethylenically unsaturated carboxylic acid such as acrylic acid is provided with zones of reduced adhesion between the metallic strip and the copolymer layer by means of a latent adhesive such as poly(vinyl acetate) or by means of a fugitive release agent such as oleic acid disposed in prescribed areas between the adhesive copolymer layer and the metallic strip. The latent adhesive material has delayed tack properties such that its adhesion to the metallic strip can be increased by the application of heat. The fugitive release agent is of a type which will become absorbed by the adhesive copolymer such that the adhesion of the adhesive copolymer to the metallic strip can be increased by the application of heat.
A cable shielding tape according to claim 1 wherein said layer of the latent adhesive extends over only a portion of the area between said metallic strip and said layer of the adhesive copolymer.
Claim 2
Dependent Claim
22 words
A cable shielding tape according to claim 1 wherein said layer of the latent adhesive is in the form of a strip.
Claim 3
Dependent Claim
54 words
A cable shielding tape according to claim 1 wherein said layer of the latent adhesive is in the form of a plurality of separate strips transversely spaced and substantially longitudinal of said cable shielding tape thereby providing a plurality of separate zones wherein the adhesive copolymer is prevented from adhering to said metallic strip.
Claim 4
Dependent Claim
27 words
A cable shielding tape according to claim 1 wherein said layer of the latent adhesive is in the form of at least one generally circular, disc-shaped lamina.
Claim 5
Dependent Claim
51 words
A cable shielding tape according to claim 1 wherein a layer of an adhesive copolymer of an Alpha -olefin and an Alpha , Beta -ethylenically unsaturated carboxylic acid is adhered to said metallic strip on the surface thereof opposite to the surface in contact with said layer of the latent adhesive.
Claim 6
Dependent Claim
72 words
A cable shielding tape according to claim 1 wherein said Alpha -olefin is ethylene present in said copolymer in an amount between about 75 and about 99.5 percent by weight, said Alpha , Beta -ethylenically unsaturated carboxylic acid is acrylic acid present in said copolymer in an amount between about 0.5 and about 25 percent by weight, and said latent adhesive is selected from the group consisting of vinyl pOlymers and polyethylene.