Title:
METHOD OF PRODUCING SHEET
Document Type and Number:
Japanese Patent JPS536367
Kind Code:
A
Abstract:
A process for producing a thermoplastic polymer sheet, especially that of polyethylene terephthalate, which comprises extruding a molten thermoplastic polymer through an extrusion die in the form of a polymer sheet onto the surface of a moving cooling body and supplying a liquid, such as water or an alcohol, in an amount sufficient to adhere the polymer sheet to the surface of the cooling body, as a vapor or fine liquid droplets to the surface of the extruded polymer sheet at a position between the extrusion die and the surface of the cooling body. This ensures good adhesion between the molten polymer in sheet form and the surface of the cooling body, and provides polymer sheets having superior surface properties at higher speeds than in the prior art.
Inventors:
TANI YOSHIO
TAKAHASHI EIJI
HACHISUKA MITSUNORI
TOGAMI ARATA
TAKAHASHI EIJI
HACHISUKA MITSUNORI
TOGAMI ARATA
Application Number:
JP8008576A
Publication Date:
January 20, 1978
Filing Date:
July 06, 1976
Export Citation:
Assignee:
FUJI PHOTO FILM CO LTD
International Classes:
B29B7/00; B29C31/00; B29C41/26; B29C48/08; (IPC1-7): B29D7/02
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