Continuous vacuum processing apparatus

Details Continuous vacuum processing apparatus Continuous vacuum processing apparatus

1990-03-19

1992-02-18

Thurlow, Jeffrey

Plastic article or earthenware shaping or treating: apparatus

Including ventilating type hood or chamber encasing a...

118 33, 118718, 118719, 264 407, 264 83, 264101, 2642884, 264DIG78, 425135, 425445, 425DIG60, 427 8, 427124, 427251, B29C 7100, C23C 1424, C23C 1456

Patent

active

050889087

ABSTRACT:
A continuous vacuum processing apparatus has a vacuum processing chamber and at least one auxiliary vacuum chamber connected to at least one of the upstream and downstream ends of the vacuum processing chamber as viewed in the direction of flow of a material to be processed. The apparatus further has a slit-type seal device provided in the auxiliary vacuum chamber and capable of conveying the material to be processed while sealing the vacuum processing chamber from exterior of the vacuum processing chamber. The seal device is provided with a guide member for guiding the material. Independent tensioning devices are provided in the vacuum processing chamber and the auxiliary vacuum chamber and capable of independently applying tensions to the portions of the material in the vacuum processing chamber and auxiliary vacuum chamber, so that a material which is not resistant to heat can be processed without being damaged.

REFERENCES:
patent: 3057792 (1962-10-01), Frohllch
patent: 3954866 (1971-07-01), Skinner et al.
patent: 3990390 (1976-11-01), Plyshevsky et al.
patent: 4551310 (1985-11-01), Imada et al.
patent: 4743419 (1988-05-01), Bierschenk
patent: 4744930 (1988-05-01), Twist et al.
patent: 4763601 (1988-08-01), Saida et al.
patent: 4847109 (1989-07-01), Shibasaki et al.

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