Nitrile preforms and containers and process improvements for for

Details Nitrile preforms and containers and process improvements for for Nitrile preforms and containers and process improvements for for

1977-11-10

1979-11-13

Bell, James J.

Bottles and jars

Ejecting

Siphon type

264 22, 428 35, 428 36, 428522, B65D 2300

Patent

active

041740432

ABSTRACT:
In forming containers by distending preforms of nitrile thermoplastic material at molding temperature, the improvement comprising exposing such preforms to low dosage radiation to reduce residual nitrile monomer in the thermoplastic material and then distending the irradiated preforms to cause HCN generated during irradiation to flash off in forming the container. The containers formed have unusually low concentrations of residual nitrile monomer as well as extractable HCN making them especially suitable for packaging foods, beverages, pharmaceuticals and the like. The irradiated preforms from which such containers are made have similarly low residual nitrile monomer levels.

REFERENCES:
patent: 3754851 (1973-08-01), Reilly et al.
patent: 3870802 (1975-03-01), Harris et al.
patent: 3900120 (1975-08-01), Sincock
European Polymer Journal, 1971, pp. 401-404, "Radiation-Induced Reactions of Monomer in Bulk Polymethylmethacrylates".

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