Crosslinking of double-sided adhesive tapes using electron beams or UV-radiation

摘要

Double sided adhesive strips in which a support material coated on both sides with an adhesive is irradiated asymmetrically on both sides in an irradiation unit with different radiation doses is new. Double sided adhesive strips in which a support material coated on both sides with an adhesive is irradiated asymmetrically on both sides in an irradiation unit with different radiation doses involves the steps: (a) coating of a support material with an adhesive A; (b) electron beam (EM) crosslinking of a partial product adhesive A/support on the bulk side with a dose A from the EB unit, at an acceleration voltage A; (c) coating of the adhesive A with a release liner; (d) coating of the two sides of the support material with an adhesive B; and (e) EB-irradiation of the composite on the open side of adhesive B with a dose B from the EB unit, at an acceleration voltage B, where doses A and B and/or acceleration voltages A and B are different.