Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – And means to form or reshape preform
Patent
1978-05-01
1979-11-20
Silbaugh, Jan H.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
And means to form or reshape preform
425523, 425526, 425530, 425534, B29C 1707, B29D 300
Patent
active
041749340
ABSTRACT:
Method and apparatus for the preparation of hollow plastic articles wherein an improved injection blow molding process is obtained and improved temperature control of the parison is obtained by the use of a plurality of molds and cores. At least one temperature controlled mold and core is used to adjust the temperature of the parison. The temperature adjusted parison is then stretched and/or blown in at least one second mold by a second core, cooled therein and transferred by at least one third ejector core to additional finishing molds for further cooling or to removal means.
REFERENCES:
patent: 3819314 (1974-06-01), Marcus
patent: 3966378 (1976-06-01), Valyi
patent: 4057609 (1977-11-01), Uhlig
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