C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
400/1000, 400/13
C09J 7/02 (2006.01) C08J 7/04 (2006.01) C09D 11/02 (2006.01)
Patent
CA 1294382
ABSTRACT This invention relates to directly printable tapes, inks for printing upon said tapes, and a method for printing upon said tapes. Adhesive tapes with printed indicia on the back side, i.e., the side opposite that bearing adhesive are useful for advertising and identification functions. As a practical matter, the adhesive is generally a pressure sensitive adhesive. Inasmuch as pressure-sensitive adhesive tapes are those in Which the adhesive has sufficient adhesion and tack to adhere to adherend surfaces With light finger pressure, the tapes are generally coated` on the back side With a release agent. Such a coating permits the tape to be unwound easily in roll form without transfer of the adhesive to the back side of the tape. Thus, with printable pressure-sensitive adhesive tapes, the ink must adhere to the release coating, which is often called a "backsize", and not be removed by the adhesive in contact therewith. This invention involves a directly printable tape comprising a polymeric film backing having a low adhesion backsize coating on one major surface thereof and a pressure-sensitive adhesive on the other major surface thereof. The low adhesion backsize coating comprises a mixture of a low adhesion backsize compound and an ink adhesion promoter. The disclosure further involves a method of printing on the low adhesion backsize coating and an ink composition. The ink comprises a conventional flexographic ink composition containing an ink adhesion promoter.
497447
Pohl Daniel P.
Truskolaski Bernard S.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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