Patent ID: 7777092
Filing Date: 2010-08-17
Classification: A61F,Y10T

Abstract:
1. An adhesive with a top surface and a bottom surface comprising a first matrix-forming material and a second material, the second material being different from the first matrix-forming material and being placed in zones within the first matrix-forming material, at least one of said zones of the second material extending from the top surface to the bottom surface of the adhesive to form an exposed area of said second material on said top surface and an exposed area of said second material on said bottom surface, said exposed area of the second material at the top surface of the adhesive having a different pattern than said exposed area of the second material at the bottom surface of the adhesive, said zones of the second material being in the form of bodies of frustum of cones with a basis of said bodies of frustum of cones being at a same surface, said exposed area of the second material at one of the top and bottom surfaces having a different size than the exposed area of the second material at the other of said top and bottom surfaces, said different sizes of the exposed areas and said exposed areas being formed by said second material in the form of the bodies of frustum of cones with the basis thereof being at the same surface causing said second material to have a bigger effect on one side of the adhesive than on the other side thereof.