Jet ink composition

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 11/00 (2006.01)

Patent

CA 2303075

The present invention provides a jet ink composition suitable for printing on substrates such as plastics messages having abrasion resistance, the composition comprising an organic solvent, a colorant, a cellulose nitrate resin, and a rosin resin. For example, the messages printed on untreated low density polyethylene and polypropylene substrates have improved rub resistance and scratch resistance. The present invention further provides a method for printing abrasion resistant messages on a surface comprising projecting a stream of droplets of the jet ink composition to the surface, controlling the direction of the stream so that the droplets are caused to form the desired printed messages, and allowing the messages to dry.

L'invention concerne une composition d'encre par jet qui convient à l'impression sur des substrats tels des messages plastiques présentant une résistance à l'abrasion, la composition renfermant un solvant organique, un colorant, une résine de nitrate de cellulose et une résine de colophane. Les messages imprimés sur des substrats non traités de polyéthylène et polypropylène à faible densité présentent une résistance au frottement et à la rayure améliorée. L'invention concerne en outre un procédé d'impression de messages résistants à l'abrasion sur une surface, lequel procédé consiste à expulser des gouttelettes de composition d'encre par jet sur la surface, à commander le sens du jet de manière que les gouttelettes forment les messages imprimés souhaités et à permettre le séchage des messages.

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