ROLL CORE AND WAFER PROCESSING TAPE WOUND AROUND THE ROLL CORE

摘要

PPROBLEM TO BE SOLVED: To provide a roll core for winding a wafer processing tape having an adhesive layer and an adhesive film on a release film, the roll core capable of sufficiently suppressing the occurrence of a transfer mark in the adhesive layer when the wafer processing tape is wound into a rolled form. PSOLUTION: The wafer processing tape includes a release film 31, an adhesive layer 32 having a predetermined planar shape provided on the surface of the release film, and an adhesive film 33 which has a label part 33a having a predetermined planar shape provided so as to cover the adhesive layer and contact the release film around the adhesive layer and a peripheral part 33b provided so as to surround the outside of the label part. The roll core 10 for winding the wafer processing tape into a rolled form has a relieving part 11 which is formed in a position corresponding at least to the adhesive layer and relieves winding pressure and a supporting part 12 which is formed in the width direction of the wafer processing tape to be wound and in the outside of the relieving part and supports the wafer processing tape. PCOPYRIGHT: (C)2010,JPO&INPIT