Film-forming head

Details Film-forming head Film-forming head

1977-03-31

1979-03-20

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Means casting fluent stock operably associated with shaping...

425141, 425145, 425447, 425466, B29D 702

Patent

active

041451732

ABSTRACT:
Apparatus and a method for forming a uniform film of plastic material, having good optical characteristics, on a substrate are disclosed. The plastic material is supplied to and maintained under pressure in a distribution channel and is fed from the distribution channel through a narrow slot to the substrate. A forming member subsequently forms the plastic material into a uniform film on the substrate. The level of the plastic material in front of the forming member is limited to a range of values based upon the thickness of the film being formed.

REFERENCES:
patent: 2330282 (1943-09-01), Hazeltine et al.
patent: 2566854 (1951-09-01), Rhodes
patent: 2754544 (1956-07-01), Bicker, Jr.
patent: 3347962 (1967-10-01), Dieck et al.
patent: 3632244 (1972-01-01), Sturgeon et al.
patent: 3884611 (1975-05-01), Anderson et al.
patent: 3940221 (1976-02-01), Nissel

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