Process for preparing silicate coated polypropylene film

Details Process for preparing silicate coated polypropylene film Process for preparing silicate coated polypropylene film

1979-03-09

1981-01-27

Kendall, Ralph S.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

4273978, 428446, 428523, 430272, 430273, 430300, B05D 306

Patent

active

042475767

ABSTRACT:
It has been found that thin oriented polypropylene film can be coated with a submicron thickness of an alkali metal silicate. The thus coated film gives excellent results when used to separate the negative from the liquid photopolymer in preparing plastic printing plates.

REFERENCES:
patent: 2526684 (1960-10-01), Powers et al.
patent: 3262808 (1966-07-01), Crooks et al.
patent: 3445264 (1969-05-01), Haines
patent: 3470013 (1969-09-01), Wagner
patent: 3540921 (1970-11-01), Ward et al.
patent: 4036136 (1977-07-01), Takagi

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