PREPARATION OF RE-SEALABLE PACKING BAG

摘要

PURPOSE:To obtain a packing bag having non-adsorbability and re-sealing function by preliminarily subjecting the surface bonded to a polyester resin layer of a chuck tape to corona discharge treatment or flame treatment before thermally bonding the chuck tape. CONSTITUTION:The polyolefin resin surface of the chuck tape 2 bonded to the polyester resin layer 11 provided to the inner surface of a film 1 is subjected to corona discharge treatment or flame treatment to be activated to bond the polyester resin layer 11 to the polyethylene resin surface. The polyester resin layer 11 and the chuck tape 2 bonded by thermal bonding has sufficient bonding strength and can be used as a packing bag having practical re-sealing function.