One means of rendering a thermoplastic substrate (such as polypropylene or polyethylene) suitable for printing, involving immersion in an acid bath to reorient the material's surface electrons and make the surface conducive to ink adhesion.
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One means of rendering a thermoplastic substrate (such as polypropylene or polyethylene) suitable for printing, involving immersion in an acid bath to reorient the material's surface electrons and make the surface conducive to ink adhesion.