Surface printing inks and coatings for use on flexible film...

Details Surface printing inks and coatings for use on flexible film... Surface printing inks and coatings for use on flexible film...

C - Chemistry, Metallurgy

09

D

C09D 177/00 (2006.01) C09D 11/10 (2006.01) C09D 11/14 (2006.01) C09D 101/18 (2006.01)

Patent

CA 2393778

This invention relates to non-aqueous coating and ink formulations for use on flexible film or paper packages re-quiring aseptic packaging conditions. The coating formulation comprises: 1) a mixing varnish comprising a phenolic-modified co-solvent-type polyamide resin, 2) a nitrocellulose compound varnish, 3) a non-aqueous solvent mixture, and 4) specialty additives, and wherein all components present in the formulation are stable in the presence of an oxidizing agent. The ink formulation addi-tionally requires a pigment and a non-aqueous solution of a metal salt of propionic acid. The printed and coated packaging materials, and methods of aseptic packaging, as well as the aseptic packages are also disclosed.

La présente invention concerne des formulations non aqueuses de revêtements et d'encres destinées à des films souples ou des emballages de papier nécessitant des conditions d'emballage aseptisées. La formulation du revêtement comprend: 1) un vernis en mélange comprenant une résine de polyamide de type à co-solvant phénoliquement modifiée, 2) un vernis à base d'un composé nitrocellulosique, 3) un mélange de solvant non aqueux, et 4) des additifs de spécialité, tous les composants présents dans la formulation étant stables en présence d'oxydants. Cette formulation d'encre nécessite en outre un pigment et une solution non aqueuse d'un sel de métal d'acide propionique. L'invention concerne également des matériaux d'emballage imprimés et revêtus, des procédés d'emballage aseptisé, ainsi que les emballages aseptisés.

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