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  • John Gregson

    Member
    April 4, 2008 at 9:42 pm

    Hi Andrew,
    The keying of ink I mentioned was for car roof top swing signs we printed by the 1000’s for the likes of ford and vauxhall. We tried Sericols version of ink that was meant for polypropylene with no luck – coat’s ink was the only one to key and put up with my test scratch :lol1:

    Data sheet for priplak: http://www.priplak.com/en/sommaire.htm

    Enhancement with printing techniques

    CORONA TREATMENT FOR BETTER PRINT QUALITY
    PRIPLAKĀ® sheets are treated on both sides, with an electric arc that oxidises the surface of the material.
    This fine invisible layer improves the adhesion of inks suitable for printing on polypropylene

    I think the treatment wears off after 6 months or so and this could be why we struggled to key the ink.

    Cheers John