Patent ID: 6395348
Filing Date: 2002-05-28
Classification: B29B,B29C,C09J,Y02W

Abstract:
A method for manufacturing pressure sensitive adhesive tapes comprising:continuously extruding a molten plastics material to form a web which is cooled and set to form a substantially un-oriented web; continuously forwarding the web; passing the web as it is forwarded through a slitting assembly arranged to slit the web at transversely spaced positions into a plurality of side by side continuous tapes, each having first and second tape surfaces and two tape edges; after slitting, drawing each continuous tape longitudinally to effect longitudinal orientation of the tape; after drawing, heat setting each tape; after heat setting, applying a release coating to the first tape surface; after heat setting, applying a coating of a pressure sensitive adhesive to the second tape surface; and continuously and separately winding each continuous tape with the release coating and the adhesive coating thereon into a series of cylindrical tape spools each containing a length of the tape.