Abstract In the double-side pressure-sensitive tapes (A and B) of the first embodiment of the present invention, a first pressure-sensitive adhesive layer (2) comprising a blend of 100 parts by weight of an acrylic or rubber-based pressure-sensitive adhesive composition with from 0.01 to 30 parts by weight of a silicone polymer is formed on one side of a substrate and an acrylic or rubber-based pressure-sensitive adhesive layer is formed as a second pressure-sensitive adhesive layer (3) on the other side. By this, a double-side pressure-sensitive tape in which the pressure-sensitive adhesives, even when being bonded to each other, can thereafter be easily separated is obtained. For the pressure-sensitive tape of the second embodiment of the present invention, a second pressure-sensitive adhesive layer (54) is formed on one inner surface (53a) of both inner surfaces of a tape substrate (53) which are faced to each other and a first pressure-sensitive adhesive layer (55) is formed on the other inner surface (53b), with the second pressure-sensitive adhesive layer and the first pressure-sensitive adhesive layer being formed from pressure-sensitive adhesives having compositions different from each other so as to be separably bonded to each other, and a third pressure-sensitive adhesive layer (56) is formed on a suitable part of the tape substrate (53) other than the both faced surfaces. By this, it becomes possible to improve fixing strength without increasing the area of the tape substrate.
A double-sided pressure-sensitive adhesive tape having a double-folded tape substrate of sheet material, comprising a first pressure-sensitive adhesive layer formed on one surface in each fold of said double-folded tape substrate, and a second pressure-sensitive adhesive layer formed on the opposite surface from said first pressure-sensitive adhesive layer in each fold of said double-folded tape substrate, wherein said second pressure-sensitive adhesive layer and said first pressure-sensitive adhesive layer are made of different pressure-sensitive adhesive compositions and are separably bonded to each other, and wherein a third pressure-sensitive adhesive layer is formed on a surface of said double-folded tape substrate on the outside of each fold of said double-folded tape substrate, wherein said first pressure sensitive adhesive layer comprises a composition of a blend of 100 parts by weight of an acrylic or rubber-based pressure sensitive adhesive composition having from 0.01 to 30 parts by weight of a silicone polymer.
Claim 2
Dependent Claim
149 words
A double-sided pressure-sensitive adhesive tape having a double-folded tape substrate of sheet material, comprising a first pressure-sensitive adhesive layer formed on one surface in each fold of said double-folded tape substrate, and a second pressure-sensitive adhesive layer formed on the opposite surface from said first pressure-sensitive adhesive layer in each fold of said double-folded tape substrate, wherein said second pressure-sensitive adhesive layer and said first pressure-sensitive adhesive layer are made of different pressure-sensitive adhesive compositions and are separably bonded to each other, and wherein a third pressure-sensitive adhesive layer is formed on a surface of said double-folded tape substrate on the outside of each fold of said double-folded tape substrate, wherein said first pressure sensitive adhesive layer comprises a composition of a blend of 100 parts by weight of an acrylic or rubber-based pressure sensitive adhesive composition having from 0.01 to 30 parts by weight of a silicone polymer.
Claim 3
Dependent Claim
166 words
A double-sided pressure-sensitive adhesive tape having a double-folded tape substrate of sheet material, comprising a first pressure-sensitive adhesive layer formed on one surface in each fold of said double-folded tape substrate, a second pressure-sensitive adhesive layer formed on the opposite surface from said first pressure-sensitive adhesive layer in a fold of said double-folded tape substrate, and a third pressure-sensitive adhesive layer is formed on the opposite surface from said first pressure-sensitive adhesive layer in another different fold of said double-folded tape substrate, wherein said second pressure-sensitive adhesive layer and said third pressure-sensitive adhesive layer are made of different pressure-sensitive adhesive compositions than said first pressure-sensitive adhesive layer, and wherein the pressure-sensitive adhesive layers in each fold of said double-folded tape substrate are separably bonded to each other, wherein said first pressure sensitive adhesive layer comprises a composition of a blend of 100 parts by weight of an acrylic or rubber-based pressure sensitive adhesive composition having from 0.01 to 30 parts by weight of a silicone polymer.
Claim 4
Dependent Claim
166 words
A double-sided pressure-sensitive adhesive tape having a double-folded tape substrate of sheet material, comprising a first pressure-sensitive adhesive layer formed on one surface in each fold of said double-folded tape substrate, a second pressure-sensitive adhesive layer formed on the opposite surface from said first pressure-sensitive adhesive layer in a fold of said double-folded tape substrate, and a third pressure-sensitive adhesive layer is formed on the opposite surface from said first pressure-sensitive adhesive layer in another different fold of said double-folded tape substrate, wherein said second pressure-sensitive adhesive layer and said third pressure-sensitive adhesive layer are made of different pressure-sensitive adhesive compositions than said first pressure-sensitive adhesive layer, and wherein the pressure-sensitive adhesive layers in each fold of said double-folded tape substrate are separably bonded to each other, wherein said first pressure sensitive adhesive layer comprises a composition of a blend of 100 parts by weight of an acrylic or rubber-based pressure sensitive adhesive composition having from 0.01 to 30 parts by weight of a silicone polymer.