Importance

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Abstract

This invention relates to a transparent plastic printing film suitable for offset printing or letterpress printing where an oil ink of the oxidative polymerization type is used. An ink-setting layer composed principally of a rubbery resin and/or styrene resin is provided on at least one side of a transparent plastic film, whereby the transparent plastic printing film permits lithographic offset or the like without losing the transparency of the film. Fine ruggedness may be formed on at least one side of the transparent plastic printing film. The transparent plastic printing film may also be subjected to an antistatic treatment. Sheet-fed printing making use of the above film does not develop blocking, tacking, scratch abrasion, etc. The above-described various properties have been improved further in a transparent plastic printing film provided with an ink-setting layer, which has been formed by coating a mixture of (i) a solution of the rubbery resin and/or styrene resin and (ii) a silica sol.

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First Claim