Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means
Patent
1977-03-11
1979-04-17
Lazarus, Richard B.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
Extrusion shaping means
425532, B29F 300, B29F 312
Patent
active
041498399
ABSTRACT:
A blow molding method and machine and more particularly a method and machine for extruding a multi-layer parison for blow molding, wherein at least two layers of molding plastics, each plastic compensating the poor or undesirable physical and chemical properties of the other plastic and/or each having a different color are forced to flow through different passages having an annular cross sectional configuration, and are joined at the junction of a short passage to be extruded into a multi-layer parison.
REFERENCES:
patent: 3901958 (1975-08-01), Doll
patent: 3950118 (1976-04-01), Adair
patent: 3985490 (1976-10-01), Kader
Fukase Hisahiko
Iwawaki Akira
Kojima Kinshiro
Nomura Akihiro
Sato Takehiko
Ishikawajima-Harima Jukogyo Kabushiki Kaisha
Lazarus Richard B.
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