| 摘要 |
AN ADHESIVE TAPE FOR TEMPORARY ATTACHMENT OF A DEVICE INCLUDES A SUBSTRATE FILM AND AN ADHESIVE LAYER PROVIDED ON AT LEAST ONE FACE OF THE SUBSTRATE FILM. THE ADHESIVE LAYER IS COMPOSED OF AN ADHESIVE COMPOSITION, THE ADHESIVE COMPOSITION CONTAINING A PRESSURE-SENSITIVE ADHESIVE AND A SIDE - CHAIN CRYSTALLIZABLE POLYMER. THE SIDE-CHAIN CRYSTALLIZABLE POLYMER IS OBTAINED FROM A MONOMER MIXTURE COMPRISING : ABOUT 40 TO ABOUT 70 WT.% OF AN ACRYLIC ACID ALKYL ESTER AND / OR A METHACRYLIC ACID ALKYL ESTER WHICH HAS AN AKLYL GROUP INCLUDING 1 TO 6 CARBON ATOMS; ABOUT 2 TO ABOUT 10 WT.% OF A CARBOXYL GROUP-CONTAINING ETHYLENIC UNSATURATED MONOMER; AND ABOUT 20 TO ABOUT 50 WT.% OF AN ACRYLIC ACID ALKYL ESTER AND/OR A METHACRYLIC ACID ALKYL ESTER WHICH HAS AN ALKYL GROUP INCLUDING 16 OR MORE CARBON ATOMS. THE POLYMER HAS A WEIGHT AVERAGE MOLECULAR WEIGHT OF ABOUT 3,000 TO ABOUT 25,000. SINCE THE ADHESIVE TAPE HAS A GOOD TACKINESS WITH RESPECT TO THE DEVICE AT A LOW TEMPERATURE, THE DEVICE CAN BE PROCESSED (E.G., CUT) OR TRANSFERRED BY FIXING THE DEVICE ON THE ADHESIVE TAPE AT A LOW TEMPERATURE. WHEN PEELING THE DEVICE OFF THE ADHESIVE TAPE, THE ADHESIVE TAPE IS HEATED TO A PREDETERMINED TEMPERATURE OR ABOVE SO THAT THE DEVICE CAN BE EASILY PEELED OFF THE ADHESIVE TAPE.
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