Solvent casting process

Details Solvent casting process Solvent casting process

2008-04-22

2008-04-22

Vargot, Mathieu D. (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

By casting liquids on a solid supporting or shaping surface

C264S217000, C264S288400

Reexamination Certificate

active

07361295

ABSTRACT:
A process for solvent casting including, casting a dope from a casting die onto a casting support, drying the cast dope on the casting support to form film, stripping off the film from the casting support, and further drying the film, wherein the dope has a solid matter content of from 17 mass % to 30 mass %, and a mean drying rate between the casting of the dope and the stripping off is more than 300 mass %/minute and not more than 1000 mass %/minute. Also, a process for solvent casting including the steps of casting a dope from a casting die to a casting support, forming the film by drying the dope to some extent, stripping off the film from the casting support and further drying the film while conveying the film with carrying it at both side edges of the film by a tenter under specified conditions.

REFERENCES:
patent: 5152947 (1992-10-01), Takeda et al.
patent: 6660211 (2003-12-01), Topolkaraev et al.

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