Method for making a thin film of polymer

Details Method for making a thin film of polymer Method for making a thin film of polymer

1989-09-05

1990-05-15

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

264166, 264204, 264216, 264298, 427289, 4274071, 4274121, 4274343, B29C 4112, B29C 4124

Patent

active

049256122

ABSTRACT:
A method for making a polymer thin film wherein a first polymer thin film is formed on a support liquid, on which a solution of a second polymer is dropped is described. The first polymer film is pulled in opposite directions to break the first polymer film as a slit, from which the second polymer solution is cast on the support liquid. As a result, the solution can spread uniformly without involving any appreciable irregularity in thickness of a final film product.

REFERENCES:
patent: 4192842 (1980-03-01), Kimura et al.
patent: 4279855 (1981-07-01), Ward, III

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