Stretch releasable adhesive tape
First Claim
Patent Images
1. An adhesive tape comprising:
- a backing layer having a haze no greater than 5 percent and a luminous transmittance equal to at least 85 percent as measured using method ASTM D1003-07, the backing layer comprising a poly(alkylene)copolymer comprising a polymerized product of a reaction mixture comprising(1) a first alkene selected from ethene, propene, or a mixture thereof; and
(2) a second alkene selected from a 1,2-alkene having 4 to 8 carbon atoms; and
(3) a metallocene catalyst; and
at least one pressure-sensitive adhesive layer adjacent to a major surface of the backing layer, the pressure-sensitive adhesive layer comprising a silicone-based adhesive composition comprising an oxamide-based silicone copolymer, where in the oxamide-based silicone copolymer comprises at least two repeat units of Formula (III)
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Abstract
An adhesive tape that is stretch releasable, articles that contain the adhesive tape, and uses of the adhesive tape are disclosed. The adhesive tapes include a backing layer that is adjacent to at least one pressure-sensitive adhesive layer. The backing layer typically is optically clear and includes a poly(alkylene)copolymer. The pressure-sensitive adhesive layer is a silicone-based adhesive composition. In many embodiments, the adhesive tape is optically clear.
76 Citations
20 Claims
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1. An adhesive tape comprising:
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a backing layer having a haze no greater than 5 percent and a luminous transmittance equal to at least 85 percent as measured using method ASTM D1003-07, the backing layer comprising a poly(alkylene)copolymer comprising a polymerized product of a reaction mixture comprising (1) a first alkene selected from ethene, propene, or a mixture thereof; and (2) a second alkene selected from a 1,2-alkene having 4 to 8 carbon atoms; and (3) a metallocene catalyst; and at least one pressure-sensitive adhesive layer adjacent to a major surface of the backing layer, the pressure-sensitive adhesive layer comprising a silicone-based adhesive composition comprising an oxamide-based silicone copolymer, where in the oxamide-based silicone copolymer comprises at least two repeat units of Formula (III) - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 18, 19, 20)
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10. An article comprising:
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a first substrate; and an adhesive tape adhered to the first substrate, the adhesive tape comprising (A) a backing layer comprising a poly(alkylene) copolymer comprising a polymerized product of a first polymerizable reaction mixture comprising (1) a first alkene selected from ethene, propene, or a mixture thereof; and (2) a second alkene selected from a 1,2-alkene having 4 to 8 carbon atoms; and (3) a metallocene catalyst, wherein the backing layer has a haze no greater than 5 percent and a luminous transmittance equal to at least 85 percent using ASTM D1003-07; (B) a first pressure-sensitive adhesive layer that is adjacent to a first major surface of the backing layer, wherein the first pressure-sensitive adhesive layer comprises a silicone-based adhesive composition comprising an oxamide-based silicone copolymer, where in the oxamide-based silicone copolymer comprises at least two repeat units of Formula (III) - View Dependent Claims (11, 12)
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13. An article comprising:
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a first substrate; a second substrate; and an adhesive tape positioned between the first substrate and the second substrate, wherein the adhesive tape couples the first substrate to the second substrate, the adhesive tape comprising (A) a backing layer comprising a poly(alkylene)copolymer comprising a polymerized product of a first polymerizable reaction mixture comprising (1) a first alkene selected from ethene, propene, or a mixture thereof; and (2) a second alkene selected from a 1,2-alkene having 4 to 8 carbon atoms; and (3) a metallocene catalyst, wherein the backing layer has a haze no greater than 5 percent and a luminous transmittance equal to at least 85 percent using ASTM D1003-07; (B) a first pressure-sensitive adhesive layer that is adjacent to a first major surface of the backing layer and a second pressure-sensitive adhesive layer that is adjacent to a second major surface of the backing layer, wherein the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer each comprise a silicone-based adhesive composition comprising an oxamide-based silicone copolymer, where in the oxamide-based silicone copolymer comprises at least two repeat units of Formula (III) - View Dependent Claims (14, 15)
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16. A method of coupling and decoupling two substrates, the method comprising:
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providing a first and second substrate; positioning an adhesive tape between the first substrate and the second substrate, wherein the adhesive tape couples the first substrate to the second substrate, the adhesive tape comprising (A) a backing layer comprising a poly(alkylene)copolymer comprising a polymerized product of a first polymerizable reaction mixture comprising (1) a first alkene selected from ethene, propene, or a mixture thereof; and (2) a second alkene selected from a 1,2-alkene having 4 to 8 carbon atoms; and (3) a metallocene catalyst, wherein the backing layer has a haze no greater than 5 percent and a luminous transmittance equal to at least 85 percent based on ASTM D1003-07; (B) a first pressure-sensitive adhesive layer that is adjacent to a first major surface of the backing layer and a second pressure-sensitive adhesive layer that is adjacent to a second major surface of the backing layer, wherein the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer each comprise a silicone-based adhesive composition comprising an oxamide-based silicone copolymer, where in the oxamide-based silicone copolymer comprises at least two repeat units of Formula (III)
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17. A method of making an adhesive tape, the method comprising:
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providing a poly(alkylene)copolymer that is the polymerized product of a first polymerizable mixture comprising (1) a first alkene selected from ethene, propene, or a mixture thereof; and (2) a second alkene selected from 1,2-alkene having 4 to 8 carbon atoms; and (3) a metallocene catalyst; and casting a backing layer comprising the poly(alkylene)copolymer between a first support layer and a second support layer, wherein the backing layer has a haze no greater than 5 percent and a luminous transmittance that is at least 85 percent based on ASTM D1003-07; and
positioning at least one pressure-sensitive adhesive layer adjacent to a first major surface of the backing layer, wherein the at least one pressure-sensitive adhesive layer comprises a silicone-based adhesive composition comprising an oxamide-based silicone copolymer, wherein the oxamide-based silicone copolymer comprises at least two repeat units of Formula (III)
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Specification