"Paper-plastic composite" or "plastic-paper composite" is an inevitable trend of development. After the paper is printed by a four-color offset press, a thin transparent plastic film is applied by the laminator to achieve the purposes of moisture resistance, abrasion resistance, and gloss enhancement.
The biggest advantage of the laminating machine is that it can be sheet-fed and it can be matched with the offset printing press; and the investment is small and the operation is convenient. It is more practical for the color printing factory, which is mainly printing paper. However, in terms of printing technology, the quality of BOPP gravure printing is less than that of BOPP gravitational change, printing ink gloss, color uniformity, and color saturation.
In terms of composite quality, the dry laminating machine is superior to the laminating film in coating uniformity, composite fastness, and transparency. However, imported gravure machines and dry laminating machines and their supporting equipments have large investments and high costs. From this point of view, the flat printing foil has certain advantages.