Sughrue Mion, PLLC
Extrusion molding method for a thin tube
An extrusion molding method including plasticizing and kneading a raw material (1), composed of a synthetic resin material having high heat-resistance and strength, extruding the material from a molding die (3) to form a tubular body (51), passing the tubular body (51) on a sizing die (4) to give it a final inner diameter, cooling and hardening the tubular body (51). The molding die (3) and sizing die (4) are coupled to each other by a connecting pipe (6). The sizing die (4) is made of a carbon material. A first air (81) is supplied to an interior of the sizing die (4) through the connecting pipe (6). A second air (92) is supplied to an interior of the molding die (3) so that an air lubrication layer is formed between an inner surface (52) of the continuous product (5) and an outer surface (41) of the sizing die (4).
Suzuki Kanshi Co., Ltd.
B B B B B B B B B B B
B29C B29C B29C B29C B29C B29C B29C B29C B29C B29C B29C
additional inventional inventional inventional additional additional inventional additional inventional inventional inventional
Yasuyuki
Suzuki