Patent ID: 6071455
Filing Date: 2000-06-06
Classification: B29C,E04B,Y10T

Abstract:
A method for applying a thermosetting polymeric portion to the surfaces at either end of a series of unconnected thermoplastic extrudate members each having lead and trailing edges and surfaces adjacent thereto, said method comprising the steps of:(a) aligning a first thermoplastic extrudate member so as to position its leading edge in an injection mold cavity;(b) injection molding a thermosetting polymeric portion onto said surface of said first thermoplastic extrudate member adjacent its leading edge;(c) transporting said first thermoplastic extrudate member so as to position its trailing edge in said injection mold cavity, and transporting a second thermoplastic extrudate member so as to position its leading edge in said injection mold cavity;(d) injection molding substantially simultaneously (1) a thermosetting polymeric portion onto said surface of said first thermoplastic extrudate member adjacent its trailing edge, and (2) a thermosetting polymeric portion onto said surface of said second thermoplastic extrudate member adjacent its leading edge wherein the first and second thermoplastic extrudate members remain unconnected to one another;(e) transporting said first thermoplastic extrudate member from said injection mold cavity, transporting said second thermoplastic extrudate member so as to position its trailing edge in said injection mold cavity, and transporting a third thermoplastic extrudate member so as to position its leading edge in said injection mold cavity; and(f) repeating steps (d) and (e) for subsequent thermoplastic extrudate members beyond said third thermoplastic extrudate member.