Film or sheet forming apparatus

Details Film or sheet forming apparatus Film or sheet forming apparatus

2008-01-29

2008-01-29

Gupta, Yogendra N. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Diverse distinct type shaping means

Shaping orifice and either a downstream preform reshaping...

C425S224000

Reexamination Certificate

active

07322814

ABSTRACT:
To form a film or sheet relatively thin and needing a high degree of precision in thickness, such as for an optical use, while suppressing temperature fluctuations at one side opposite to the other side in contact with an outer peripheral surface of a roll (11), an outer peripheral surface of the roll is covered, with a necessary gap (t) left, by a windshield (20) of a double-layered structure having a thermally insulating property.

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