Heat printing sheet and heat printing method

Details Heat printing sheet and heat printing method Heat printing sheet and heat printing method

1976-03-31

1978-01-03

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

101150, 106 20, 106 22, 106 32, 106 30, 427385B, 427369, 428207, 428334, 428337, 428483, 428913, 428500, 428522, 428914, C09D 1110, B32B 300, B32B 516, B32B 2706

Patent

active

040668100

ABSTRACT:
A heat printing sheet having a pattern of a hot melt ink composition on a base, the improvement comprising using a hot melt ink composition which comprises 5-60 wt. parts of a base polymer of ethylene-vinyl acetate copolymer having 5-50 wt. % of the vinyl acetate content and 4-1000 g/10 min. of a melt index or a mixture of said ethylene-vinyl acetate substituted with 10-60 wt. % of the other polymer; and 20-80 wt. parts of a tackifier selected from terpene resins, hydrogenated dicyclopentadiene resins, lower styrene resins, rosins, rosin polyol esters, hydrogenated rosin and rosin polyol esters and alicyclic hydrocarbon resins and 0.1-30 wt. parts of a pigment or dye, and the hot melt ink composition is melted at 80.degree.-250.degree. C and is coated on an engraved roll and is instantaneously printed on a base of synthetic polymer film having 10-100 of a thickness and smooth surface under 0.5-10 Kg/cm.sup.2 (gauge) to form the pattern of the hot melt ink composition having 10-3000 of a thickness.

REFERENCES:
patent: 3063367 (1962-11-01), Nystrand et al.
patent: 3516904 (1970-06-01), Klinker
patent: 3738265 (1973-06-01), Saueressig
patent: 3922445 (1975-11-01), Mizuno et al.
patent: 3924041 (1975-12-01), Miyayama et al.

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