Patent ID: 6248050
Filing Date: 2001-06-19
Classification: B42C,Y10S

Abstract:
A method for manufacturing a hanging file folder, comprising the steps of:providing a web of thermoplastic material having a width with first and second opposed side edge portions;providing at least one thermoplastic support bar profile extrusion having a thicker upper portion which tapers to a thinner lower web-contacting portion having a thickness which is about the same as that of the web of thermoplastic material;providing the at least one thermoplastic support bar profile with a slot in the lower portion extending toward the upper portion;guiding a side edge portion of the web over the thinner lower portion of the thermoplastic support bar profile extrusion and into the slot of said thermoplastic support bar profile extrusion such that a region of contact is formed between the edge portion of the web and the thinner lower portion of the thermoplastic support bar profile extrusion;heat bonding the lower portion of the thermoplastic support bar profile extrusion to a corresponding edge of the web at said region of contact, wherein said lower portion and said thermoplastic web are heated at approximately the same rate to form a smooth, flat bond, thereby minimizing puckering; andseparating a predetermined length of the web having the at least one thermoplastic support bar profile bonded thereon from a remaining portion of said web to form said hanging file folder.