Patent ID: 6299720
Filing Date: 2001-10-09
Classification: A44B,B65D,Y10T

Abstract:
A method of making an interlocking zipper, said method comprising the steps of:extruding a length of plastic ribbon having two opposite edges;extruding a length of plastic web onto said ribbon length so that said web becomes fused to said ribbon at an area between said ribbon edges, said web being wider than said ribbon so that extensions of said web extend laterally beyond said ribbon edges, said web extensions being free of said ribbon;extruding a length of a first interlocking member onto a first side of said web so that said first interlocking member becomes fused to said web first side; andextruding a length of a second interlocking member onto a second side of said web opposite said first side so that said second interlocking member becomes fused to said web second side, said second interlocking member being interlockable with said first interlocking member;said first and second interlocking members being extruded onto a surface of said web that is opposite to said ribbon.