Preexistence, present life and future of thermal contraction film

Geschrieben von guofeng am 8. August 2018 04:28 Uhr

    

Shrink film is a kind of thermoplastic film that is stretched and orientated in the production process, while it is heated and contracted in the process of use. As early as 1936, the thermal shrinkage of the film was applied, initially mainly using rubber film to shrink the packaging of perishable food.

 

The production process

BOPP film manufacturers production usually adopt extrusion blow molding or extrusion LiuYanFa produce thick film, and then above the softening temperature, melt temperature, a high elastic state under longitudinal and transverse stretching temperature, stretching or only in one of the directions orientation, and the other one direction not stretching, the former is called biaxial tensile shrinkage film, while the latter is called a one-way shrink film. When used, the packaged goods are packed with reliable shrinkage forces at temperatures greater than or close to the tensile temperature. The type of thermal contraction

PET film suppliers are mainly made of various thermoplastic films. At first, PVC thermal shrink film mainly. In recent years, with the continuous development of the market and people's attention to environmental protection, the demand for PVC thermal shrinkable film is gradually reduced due to the pollution problem caused by non-recycling and incineration of PVC thermal shrinkable film, and various types of PE, PP, PET, PVDC, POF and other multi-layer co-extrusion thermal shrinkable film develops rapidly and becomes the mainstream of the market. Among them, POF is the replacement of traditional PVC thermal shrink film, while PET thermal shrink film, as an environmentally friendly material, is easy to recycle, recycle and utilize, and has a wide development space.

PE heat-shrinkable film

BOPP film suppliers film is widely used for the whole package of wine, can, mineral water, beverage, cloth, etc., which has good flexibility, strong resistance to impact and tear, not easy to damage, not afraid of moisture and large shrinkage.

Kommentare

Es sind noch keine Kommentare vorhanden!