Patent ID: 8298470
Filing Date: 2012-10-30
Classification: B29C,B29K,C08J,Y10T

Abstract:
1. A method of making a molded article from at least first and second formable materials in a single heating cycle, comprising the steps of: providing a flow molding apparatus comprising a mold positioned between a first electrode and a second electrode, wherein the mold defines a molding cavity; providing first and second formable materials capable of flowing within the molding cavity when heated to first and second molding temperatures, respectively; calculating a molding time for the first formable material to reach the first molding temperature; calculating a required power factor for the second formable material that will allow the second formable material to reach the second molding temperature in the molding time of the first formable material; calculating an amount of an additive to be mixed with the second formable material to obtain the required power factor; mixing the calculated amount of the additive with the second formable material; placing the first and second formable materials in the molding cavity of the flow molding apparatus; and heating the first and second formable materials in the molding cavity of the flow molding apparatus whereby the entire mass of the first formable material reaches the first molding temperatures at substantially the same time that the entire mass of the second formable material reaches the second molding temperature such that the first and second formable materials flow to thereby form a defined shape within the molding cavity of the flow molding apparatus.