Psa tapes for splicing flat web materials

Details Psa tapes for splicing flat web materials Psa tapes for splicing flat web materials

C - Chemistry, Metallurgy

09

J

C09J 7/02 (2006.01) B32B 7/12 (2006.01) C09J 183/04 (2006.01)

Patent

CA 2641799

The invention relates to pressure-sensitive adhesive tapes for flying splice of flat web materials, comprising at least one splittable carrier and two layers of adhesive, at least one of the adhesives being a silicone PSA, more particularly an electron-beam- crosslinked silicone PSA, and also to a method of producing them. The silicone PSA advantageously comprises at least one polydiorganosiloxane having the structure -Si(R2)- O-[Si(R2)-O]n-Si(R2)-, where the 2n+4 substituents R independently of one another are monovalent hydrocarbon radicals and n is an integer, and also at least one resin ("MQ resin") constructed from (R2)3SiO1/2- units ("M units") and SiO4/2 units ("Q units"), the substituents R2 of the M units being independently of one another alkyl groups, alkenyl groups, alkylsilyl groups, hydroxyl groups or hydrogen.

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