Development trend of heat shrinkable film label technology

Heat shrinkable film label market is facing the old paper labels, heat transfer decoration and mold labeling technology competition. It is reported that the cost of heat shrinkable film label is at least 2 times that of the traditional method. But at the same time, many consumer goods packaging manufacturers also said that the advantages of shrink film labels will exceed their high cost of spending.

The heat shrinkable film label is used in two ways: the whole set of standard shrinkage and rolling standard method. These two methods have a common feature is the plastic film average thickness of 50 microns around the first around a bottle and then heated, heat generated by the membrane contraction along the contour of the bottle. Among them, the standard shrinkage method is more commonly used, and the rolling mark method is developing rapidly. The extrusion process of the whole standard shrink film usually contains a transverse orientation process.

The film is made into a cylinder in the printed label, then processing machine will set the cylindrical label into certain length, then the bottle on the label, then let the bottle and sleeves together by steam or heating medium for infrared oven, heat shrinkage sleeves and generate close to in the label on the bottle. The typical shrinkage range is 50%-80%. The bottle has irregular geometric shape suitable for use of this set of standard system has high shrinkage. The most commonly used resin materials for the shrink film are PVC, ethylene glycol modified polyester and oriented polystyrene.