Plastic and nonmetallic article shaping or treating: processes – Reactive gas or vapor treatment of work – Work is organic material
Patent
1970-05-25
1976-07-13
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Reactive gas or vapor treatment of work
Work is organic material
53 42, 156 69, 264 96, 264249, 425DIG207, B29C 1707
Patent
active
039694550
ABSTRACT:
This disclosure relates to a method utilizing an apparatus defining an open ended mold cavity, operable in conjunction with a piston supporting a closure cover for a container to be formed in the cavity which is shiftable inwardly into the open end of the cavity. The method involves introducing a blank of heated plastic material into the mold cavity inwardly of the open end thereof first introducing gas or a similar fluid or fluent material and then a beverage or a similar fluid or fluent material under pressure into the cavity at a point spaced outwardly of the blank and inwardly of the closure cover and piston after the latter has been shifted into the outer end of the cavity to seal the latter. The introduced gas is under sufficient pressure for pre-blow molding blank and the subsequently introduced beverage is under sufficient pressure to complete the blow molding of the blank in the mold. Thereafter, the piston, with the closure cover thereon, is further shifted inwardly of the mold cavity for bonding to the upper peripheral portions of the blow molded blank and closing the container defined thereby.
REFERENCES:
patent: 1981334 (1934-11-01), Schmalz
patent: 2809399 (1957-10-01), Mead
patent: 3084396 (1963-04-01), Abt
patent: 3122274 (1964-02-01), Quinche
patent: 3124083 (1964-03-01), Atwood
patent: 3162706 (1964-12-01), Cheney
patent: 3251915 (1966-05-01), Pechthold
patent: 3491181 (1970-01-01), Keil et al.
patent: 3577291 (1971-05-01), Uchida
Continental Can Company Inc.
Silbaugh Jan H.
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