| 摘要 |
This invention relates to inks, and, more particularly inks that are useful for printing on low adhesion backsize coatings. …<??>In many applications of pressure-sensitive adhesive webs, it is desirable to have a printed message or design on the adhesive-free side of the web. When some commonly available inks are used for such printing, a difficulty is encountered which arises from the tendency of the print to transfer to the adjacent adhesive-coated side when the web is unrolled, particularly if the printed web is retained in roll form for prolonged periods of time at elevated temperatures. When other commonly available inks are used, the adhesion of ink to the adhesive-coated side frequently is so strong that the web breaks when an attempt is made to unroll it. This is particularly the case when highly aggressive adhesives are used. …<??>This invention involves an ink composition comprising a conventional flexographic ink stock, a wax, and a chlorinated polyolefin. This ink composition can be used to print webs, e.g. tapes, bearing a low adhesion backsize on one major surface thereof and a pressure-sensitive adhesive on the other major surface thereof. |
