Method of offset printing on polypropylene resin cases for video

Details Method of offset printing on polypropylene resin cases for video Method of offset printing on polypropylene resin cases for video

1984-11-13

1985-11-05

Hoffman, James R.

Coating processes

Coating has x-ray, ultraviolet, or infrared properties

427261, B05D 136, B05D 504, B05D 704

Patent

active

045513600

ABSTRACT:
Offset printing on a polypropylene resin case for a video tape cassette is readily and effectively accomplished by: first applying an anchor coat, containing a polyol, a polyester and a vinyl chloride resin as principal components and isocyanate as a curing agent, onto the surface to be thus printed of a polypropylene sheet from which a blank sheet is to be die cut and assembled into said case; subjecting the anchor coat to a precuring treatment; and then offset printing on the anchor coat surface with the use of an offset printing ink of ultraviolet ray-curing tape before the anchor coat becomes fully cured.

REFERENCES:
patent: 4478889 (1984-10-01), Maruhashi et al.

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