The production of the POF Shrink Film is usually produced by extrusion blow molding or extrusion casting. Then it is stretched longitudinally and laterally at a high elastic temperature below the softening temperature and below the melting temperature, or only in one direction in which the other direction is not stretched, the former is called the double axis contraction contraction. Membrane, and the latter is called a unidirectional contraction membrane. When used, when the temperature is greater than the drawing temperature or near the drawing temperature, the reliable shrinkage force can bind the packaged goods.
According to experts, the domestic heat shrinkable film market will grow by more than 20%. The food industry is the largest market for heat shrinkable packaging.
As POF Shrink Film Manufacturer, we can supply more information about packaging, welcome to contact us.