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US 4,876,049 AGranted
Method for preparing molded articles of ultra-high molecular weight polyethylene
AssigneeNippon Petrochemicals Company, Limited
InventorsTakeo Aoyama, Teruo Imai, Junichi Hattori, Mikio Uehara
Life of this patent
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Abstract
The present invention provides a method for preparing a molded article of an ultra-high molecular weight polyethylene which is characterized by compression-molding, or heating and pressurizing a porous sheet of said ultra-high molecular weight polyethylene. The porous sheet may be superposed with a substrate, and may be wrapped around a deformable member of a mold and densified by deformation of said member.
Claims15
A method for preparing a molded hollow article of an ultra-high molecular weight polyethylene comprising the steps of providing a mold having a deformable member;
- positioning a porous sheet of said ultra-high molecular weight polyethylene about said deformable member;
- applying heat and deforming said deformable member with sufficient pressure to thereby cause said sheet to adhere closely to said mold, whereby said sheet is melted and densified.
Dependencies are inferred from the claim text.