MANUFACTURE OF ULTRA-HIGH-MOLECULAR-WEIGHT POLYETHYLENE POROUS MATERIAL

• Main Authors: KAMIYAMA KANJI, SUZUKI NOBUYASU
• Format: Patent
• Language: English
• Published: 27.08.1996
• Edition: 6
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PURPOSE: To obtain a method for manufacturing a long ultra-high-molecular- weight polyethylene porous material used for a filter or a carrier of a specific concerned material having many open-cells. CONSTITUTION: A method for manufacturing an ultra-high-molecular-weight polyethylene porous material which is extrusion molded by a ram extruder comprises the steps of passing composition mainly containing ultra-high- molecular-weight polyethylene partially in a molten state from the orifice of a breaker plate having a plurality of orifices under the conditions of a heating temperature of 150 to 250 deg.C and a shearing velocity of 1.0×10 to 3.0×10 sec<-1> , and fusion bonding the partial melt positions in a mold interlocked to the plate to manufacture the porous material having many open-cells.