acpo ltd., has introduced 531T, a matte polypropylene thermal transfer printable PSA roll label film. 531T is a linerless overlaminate that provides label surface protection and thermal transfer printability for variable data on pre-printed labels. In addition, the low glare surface of 531T facilitates bar code scanning and offers a dull, yet attractive label appearance. Constructed with a 1 mil matte BOPP film and .5 mil water emulsion acrylic adhesive, 531T offers excellent acid, chemical and oil resistance, acpo says. In conjunction with its launch of 531T, acpo has updated its thermal transfer overlaminate product line with ribbon recommendations and chemical testing data for optimal overlaminate and ribbon compatibility performance.