Method for making coated and printed packaging material on a pri

Details Method for making coated and printed packaging material on a pri Method for making coated and printed packaging material on a pri

1988-03-30

1990-02-06

Lawrence, Evan

Coating processes

Nonuniform coating

Applying superposed diverse coatings or coating a coated base

427258, 427288, 427428, B05D 302, B05D 312, B05D 500, B05D 700

Patent

active

048987522

ABSTRACT:
Unbleached paper and paperboard for use as outer packaging material is coated and printed on a printing press. The unbleached rawstock must be relatively smooth and nonporous prior to coating and printing with a Sheffield roughness less than about 300 units for linerboard and less than about 330 units for folding carton material. The coating formulation preferably comprises a mixture of temperature insensitive binders and pigments having a viscosity lower than normal paper coatings, and is applied in layers of about 1.5 lb./1000 square feet up to a total of about 5 lb./1000 square feet. Best results are obtained when the coated surface is doctored with a blade or fixed roll after coating and before drying to achieve a smooth surface for printing on the same or a different press.

REFERENCES:
patent: 2746878 (1956-05-01), Rush

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