Process for deep drawing plastic foils

Details Process for deep drawing plastic foils Process for deep drawing plastic foils

1990-08-31

1992-01-14

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Stretching or stretch forming

425398, B29B 5108

Patent

active

050808532

ABSTRACT:
The deep-drawing of plastic foils for producing receptacles uses a drawing punch intermittently movable into a drawing mold and several expansion elements (jaws) radially movable on the drawing punch. The movement of the jaws and the punch is mutually effected to discontinuously move the drawing punch during its inward movement and to stop it for a respective predetermined dwell time. This can be combined with a continuous or discontinuous movement of the expansion jaw elements.

REFERENCES:
patent: 3943215 (1976-03-01), Grune et al.
patent: 3956451 (1976-05-01), Adams
patent: 3975493 (1976-08-01), Tigner et al.
patent: 4480979 (1984-11-01), Keith et al.

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