How should the heat shrinkable film material be processed before printing

How should the heat shrinkable film material be pre-printed? Release time: 2017-07-14 　　 Regarding the question of how the heat shrinkable film material should be pre-printed, it is theoretically believed that good printability should be obtained on the heat shrinkable film. The surface tension of the film should be higher than the surface tension of the ink, and the surface should have a certain degree of roughness to form an adsorption force. Polyolefins such as PP and PE films in heat shrinkable films are non-polar polymer materials with stable chemical properties, low surface tension, lower than the tension of the ink, and poor adhesion to the ink. Although the surface tension of some heat-shrinkable films is equal to or higher than that of the ink, its surface is smooth, without pores, and the surface adsorption is small. At the same time, various heat-shrinkable films are added in synthetic resins. Antistatic agent and anti-aging agent. It will also affect the surface properties of the film and make its printability worse. There are some printability problems in most heat shrinkable films. In order to improve the printability of the film surface, the surface of the film with poor printability must be pretreated to increase the surface tension and surface adsorption. Commonly used methods include corona treatment, plasma treatment, chemical treatment, coating treatment and so on. http:///, heat shrinkable film Previous: Application of heat shrinkable label in the beverage industry