Patent ID: 8709325

Claim:
A liquid phase injection molding process for polyethylene resins which comprises: a. injecting into a mold a molding composition containing a polyethylene powder component at an injection temperature below the melting temperature of said polyethylene powder component, said molding composition consisting essentially of: i) from 40 to 60 weight percent of polyethylene powder component comprising ultra high molecular weight polyethylene; and ii) a carrier and binder component selected from the group consisting of: very low density polyethylene, petroleum jelly, hydrocarbon waxes, and mixtures thereof in an amount from 60 to 40 weight percent, sufficient to provide said molding composition with a stirred viscosity less than 30,000 centipoise at said injection temperature; b. discontinuing said injection of said molding composition when said mold is filled with said molding composition; c. applying heat to the exterior of the mold for sufficient time to melt said polyethylene powder component; d. cooling the mold to an ejection temperature from about 75° F. to 145° F. and; e. opening the mold and ejecting a molded solid-form polyethylene part.