Synthetic plastics film manufacturing plant including a multiple

Details Synthetic plastics film manufacturing plant including a multiple Synthetic plastics film manufacturing plant including a multiple

1975-12-19

1977-03-29

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Means casting fluent stock operably associated with shaping...

425217, 425305R, 425307, 425327, 425335, 425363, 425367, B29D 714

Patent

active

040146367

ABSTRACT:
Synthetic plastics film manufacturing plant comprising material feed means, preferably in the form of a screw extruder and rolling mill, feeding a sheet material to a multiple roll calender, the multiple roll calender comprising seven rolls comprising four bottom rolls disposed in an L-shape, one of which four bottom rolls provided in the foot of the L, is an input feed roll, and three rolls disposed one above the other with their axes disposed substantially in the same vertical plane, the lowest roll of said three other rolls being disposed in a horizontal juxtaposition and in rolling contact with the topmost roll of said four bottom rolls and on the same side thereof as the input feed roll.
Preferably a roll of said four bottom rolls which defines an input feed roll gap with said input feed roll is coupled by links to the roll thereabove to form a first linked roll unit; the uppermost roll of said four bottom rolls and the lowermost roll of said three rolls are coupled together to form a second linked roll unit; and the uppermost roll of said three rolls and the roll therebelow are coupled together to form a third link roll unit; said roll units each being adjustably mounted in a frame of the multiple-roll calender.

REFERENCES:
patent: 2038328 (1936-04-01), Wells
patent: 2815531 (1957-12-01), Stewart
patent: 3008864 (1961-11-01), Macklem et al.
patent: 3833437 (1974-09-01), Appleby et al.
patent: 3936258 (1976-02-01), Lake
patent: 3964848 (1976-06-01), Wockener

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