Decoration and printing on polyolefin surfaces
First Claim
1. The method for the permanent application of indicia to a surface of a polyolefin object which comprises:
- a. applying indicia formed of a mixture of finely divided polyolefin, pigment and wax to said surface to provide an indicia-bearing area thereof;
b. providing a coating over said indicia-bearing area of a coating mixture consisting essentially of from 1 to 99 weight percent polyolefin and the remaining weight percent being a binder selected from the group consisting of rosins, aromatic and aliphatic hydrocarbon resins and waxes, and terpene base resins to obtain a coated, indicia-bearing area;
c. heating the coated, indicia-bearing area by exposing the surface of said polyolefin object to atmospheric pressure heating at a temperature sufficient to fuse said coating and incorporate said coating and said indicia permanently into said surface.
1 Assignment
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Accused Products
Abstract
There is disclosed a method for the permanent application of indicia to the surface of the polyolefin object by applying pigmented material to the surface in an indica pattern, preferably from a transfer sheet. Preferably the pigmented material is a mixture of finely divided pigment, hydrocarbon wax and finely divided polyolefin. The polyolefin surface bearing the indicia is coated with a coating mixture comprising a mixture of polyolefin and a binder such as a rosin or wax. Thereafter, the coated, indicia-bearing polyolefin surface is surface-heated to a temperature sufficient to fuse the coating and incorporate the coating and indicia permanently into the polyolefin object. The heating can be performed by passing a heat source across the surface.
41 Citations
11 Claims
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1. The method for the permanent application of indicia to a surface of a polyolefin object which comprises:
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a. applying indicia formed of a mixture of finely divided polyolefin, pigment and wax to said surface to provide an indicia-bearing area thereof; b. providing a coating over said indicia-bearing area of a coating mixture consisting essentially of from 1 to 99 weight percent polyolefin and the remaining weight percent being a binder selected from the group consisting of rosins, aromatic and aliphatic hydrocarbon resins and waxes, and terpene base resins to obtain a coated, indicia-bearing area; c. heating the coated, indicia-bearing area by exposing the surface of said polyolefin object to atmospheric pressure heating at a temperature sufficient to fuse said coating and incorporate said coating and said indicia permanently into said surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification