Process for production of covered deep-drawn can

Details Process for production of covered deep-drawn can Process for production of covered deep-drawn can

1990-06-13

1991-12-17

Larson, Lowell A.

Metal deforming

With 'coating' of work

72347, B21B 4500

Patent

active

050726056

ABSTRACT:
Disclosed is a process for the production of a covered deep-drawn can, which comprises subjecting a metal sheet covered with a thermoplastic resin to drawing and deep-drawing. By heat-treating the formed covered deep-drawn can at a temperature higher than the glass transition point of the thermoplastic resin covering but lower than the melting point of the thermoplastic resin covering, the corrosion resistance, heat resistance and denting resistance of the can are improved, and the adhesion of the resin covering to the metal sheet and the heat resistance of the resin covering to the metal sheet and the heat resistance of the resin covering are improved without degradation of film characteristics inherently possessed by the resin covering.

REFERENCES:
patent: 3564895 (1971-02-01), Pfanner et al.
patent: 4415523 (1983-11-01), Barham et al.
patent: 4450977 (1984-05-01), Culburn et al.

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