BODY TAPE HAVING AN ADHESIVE WITH COPPER PARTICLES
Adhesive tapes are disclosed that have a flexible backing conformable to a body part and have a top surface and a bottom surface and a layer of an adhesive composition disposed on the bottom surface of the flexible backing. The adhesive composition is formed from a pressure sensitive adhesive, and a copper metal powder and/or copper metal flakes having an apparent density in the range of 1 g/ml to 4 g/ml suspended throughout the adhesive composition, and may include a thickening agent.
1 . An adhesive tape comprising:
a flexible backing conformable to a body part and having a top surface and a bottom surface; and
a layer of an adhesive composition disposed on the bottom surface of the flexible backing, the adhesive composition comprising:
a pressure sensitive adhesive;
copper metal powder and/or copper metal flakes having an apparent density in the range of 1 g/ml to 4 g/ml suspended throughout the adhesive composition; and
optionally, a thickening agent.
2 . The adhesive tape of claim 1 , wherein the pressure sensitive adhesive is a silicone adhesive or an acrylic adhesive.
3 . The adhesive tape of claim 2 , wherein the pressure sensitive adhesive is the acrylic adhesive, and the acrylic adhesive is a solvent-less acrylic adhesive.
4 . The adhesive tape of claim 1 , wherein the copper metal powder and/or the copper metal flake has an apparent density of 1 g/ml and no thickening agent is present.
5 . The adhesive tape of claim 1 , wherein the copper metal powder and/or copper metal flake has an apparent density greater than 1 g/ml and the thickening agent is present in a thickening agent to copper metal ratio of weight of about 1:1 to 1:20.
6 . The adhesive tape of claim 5 , wherein the thickening agent and copper metal are present in a ratio of weight of about 1:1 to about 1:8.
7 . The adhesive tape of claim 5 , wherein the thickening agent and the copper metal are present in a ratio of weight of about 1:2 to about 1:6.
8 . The adhesive tape of claim 5 , wherein the adhesive composition further comprises a tackifier having a viscosity greater than 4000 cps/mPas functioning as the thickening agent.
9 . The adhesive tape of claim 5 , wherein the adhesive composition further comprises a wetting agent in a ratio of weight of about 1:2 to about 2:1 with the thickening agent.
10 . The adhesive tape of claim 8 , wherein the adhesive composition further comprises a defoamer.
11 . The adhesive tape of claim 1 , wherein the acrylic adhesive is a solvent-borne acrylic adhesive.
12 . The adhesive tape of claim 8 , wherein the thickening agent and the copper metal powder and/or copper metal flake are present in a ratio of weight of about 1:1 to about 1:20, and the balance is the solvent-borne acrylic adhesive.
13 . The adhesive tape of claim 1 , wherein the flexible backing is a film.
14 . The adhesive tape of claim 1 , wherein the flexible backing is a stretch base material.
15 . The adhesive tape of claim 1 , further comprising a release structure applied to the top surface of the flexible backing.
16 . The adhesive tape of claim 1 , wherein the release structure comprises a barrier layer as an innermost layer in contact with the top surface of the flexible backing and a release layer as the outermost layer.