Package making – Interrelated or safety controls
Patent
1975-03-17
1977-08-09
Silbaugh, Jan H.
Package making
Interrelated or safety controls
264 89, 264 90, 264 92, 264 97, 264234, 425523, 425524, 425526, B29C 1707, B65B 5506, B65B 5514
Patent
active
040402339
ABSTRACT:
A filled, fluid barrier resistant plastic container is obtained wherein the container is exposed to a temperature in excess of 175.degree. F., as for example being filled with a material maintained at said elevated temperature. A multilayered, hollow plastic container is provided having outer and inner portions of thermoplastic materials resistant to temperatures in excess of 175.degree. F., and a barrier layer of thermoplastic material between the outer and inner portions. The container may be filled with a material at a temperature in excess of 175.degree. F. but below the temperature of resistance of the inner and outer layers whereby the barrier layer softens or melts, and the filled container is cooled to ambient temperature whereby the barrier layer reforms in place to provide the filled, barrier resistant container of the present invention.
REFERENCES:
patent: 3052559 (1962-09-01), Peebles
patent: 3058276 (1962-10-01), Palma
patent: 3342365 (1967-09-01), Lux et al.
patent: 3457337 (1969-07-01), Turner
patent: 3537498 (1970-11-01), St. Amand
patent: 3561629 (1971-02-01), Turner
Bachman Robert H.
Silbaugh Jan H.
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