Patent ID: 6036138
Filing Date: 2000-03-14
Classification: B29C,B29K,B29L,B65H,G02B

Abstract:
A spool comprising:a first portion having a first side wall flange, said first portion defining a first locating surface and a first welding surface spaced apart from said first locating surface;a complimentary second portion having a second side wall flange, said second portion defining a second locating surface and a second welding surface spaced apart from said second locating surface, said first and second locating surfaces being in direct engagement with one another and cooperating to orient said first and second portions such that said first and second side wall flanges are in a generally parallel arrangement with each other; anda welding material separate from said first and second portions, said welding material disposed between said first and second welding surfaces for securing said first and second portions together, said welding material being a thermoplastic weld material having a plurality of non-continuous ferromagnetic particles disposed therein enabling said thermoplastic weld material to melt when said ferromagnetic particles are subjected to alternating magnetic fields.