Process for the preparation of composite sheet comprising suppor

Details Process for the preparation of composite sheet comprising suppor Process for the preparation of composite sheet comprising suppor

1997-11-24

1999-03-09

Beck, Shrive

Coating processes

Optical element produced

Polarizer, windshield, optical fiber, projection screen, or...

427202, 427203, 427204, 427336, B05D 132, B05D 506, B05D 310

Patent

active

058797408

ABSTRACT:
A process for the preparation of a composite sheet is disclosed. The composite sheet comprises a film support and transparent solid fine particles fixed thereon. The support has a surface that can be swelled with an aqueous or organic solvent. The process comprises the steps of (1) bringing the support into contact with the solvent to swell the surface of the support, whereby rendering the surface adhesive, (2) bringing the particles into contact with the adhesive surface, whereby fixing a part of the particles onto the surface; and then (3) moving the support in a solvent to remove the particles that are not fixed onto the surface from the support. An apparatus for the preparation of the composite sheet is also disclosed.

REFERENCES:
patent: 2281100 (1942-04-01), Lard
patent: 3861791 (1975-01-01), Burke, Jr. et al.
patent: 4849265 (1989-07-01), Ueda et al.
patent: 5035920 (1991-07-01), Smrt et al.

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