PRESERVATION OF THE APPEARANCE OF PRE-PRINTED GRAPHICS ON HOT STRETCHED FILM

摘要

The present disclosure is concerned with improving the appearance of graphics (26, 28) printed on a flexible polymer film (20) which is subsequently heated to a forming temperature and then drawn into a mold to form a cavity adapted for the packaging of an item, typically a food item. The improvement is effected by reducing the heat trans¬ fer to the portions of the film carrying the graphics thereby reducing the formability of these portions so that they stretch less than the rest of the film which is drawn into the mold.