Patent ID: 6450088
Filing Date: 2002-09-17
Classification: B29C,B29L,B31B,Y10T

Abstract:
A heat sealing apparatus for plastic materials comprising;a T-shaped heating element having an upper planar surface and a flange perpendicular to the planar portion forming a heating edge; a tubular rod heater in intimate contact with said T-shaped heating element; said tubular rod heater comprising; a brass rod; a heating wire spirally wound around said brass rod; an insulator insulating said heating wire from said brass rod; an outer insulating sleeve covering said heating wire and said brass rod; said tubular rod heater positioned in contact with said T-shaped heating element to maximize heat transfer to said heating end; a housing covering said T-shaped heating element and said tubular rod heater; a handle on said housing for pressing said heating apparatus downward against a surface; a pair of rails mounted on either side of said heating edge forming a slot through which said heating edge may pass; biasing springs for biasing said rail over and beyond the end of said heating edge to maintain said heating edge in a retracted position until ready to use; a connector connecting said resilient heater to electrical power to heat said heating element and heating edge; whereby when said heat sealing apparatus is pressed downward on a plastic material placed on a surface, said heating edge passes through said slot between said rails and heats and seals said plastic material.