Patent ID: 7416521

Claim:
Apparatus for making a composite packaging material for making easy-open packages, comprising in combination, (a) pulling means for pulling a running length of packaging film, said film having defined rupture characteristics, (b) perforating means for perforating said packaging film with a sequence of spaced apart at least one perforation separated from another at a substantially constant fixed interval between adjacent ones of said sequence along the length of said film, (c) tape forming means for forming a continuously extending dry edge plastic tape from a continuous supply of tape having length and width, an upper face, and a lower adhesive coated face except in the region of said dry edge, said adhesive coating having defined adhesive characteristics with respect to said film, said tape forming means comprising stretching means for stretching said plastic tape to the proper extent to impart contraction characteristics thereto that are the same as the contraction characteristics of said packaging shrink film, (d) tape pieces forming means for forming from said continuous dry edge tape discrete pieces of tape extending lengthwise of and spaced apart along the length of said film, and (e) tape adhering means for adhering successive ones of said discrete pieces of tape to said packaging film in overlying sealing relationship to successive ones of said sequence of at least one perforation, said adhesive coated lower face portion of each of said pieces of tape overlying and being both longer and wider than the extent of said at least one perforation which it overlies.