Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing multilayer work or article
Patent
1990-06-08
1992-10-20
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Producing multilayer work or article
264167, 264173, 425132, 425532, 425381, B29C 4722
Patent
active
051567962
ABSTRACT:
A composite parison generally cylindrical in shape and including two or more plastic materials different in characteristic is formed. Using this composite parison, a hollow plastic product of any desired shape having a locally different characteristic, such as in softness, heat-resistance or wear-resistance, can be manufactured with ease, for example, by conventional blow molding.
REFERENCES:
patent: 3257482 (1966-06-01), Schechter
patent: 3409710 (1968-11-01), Klygis
patent: 3457337 (1969-07-01), Turner
patent: 4056344 (1977-11-01), Lemelson
patent: 4149839 (1979-04-01), Iwawaki et al.
patent: 4239474 (1980-12-01), Nakagawa
patent: 4659531 (1987-04-01), Ezaki
Nakagawa Tatsuya
Tatara Nobumasa
Excell Corporation
Thurlow Jeffery
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