Advantages of PVC heat shrink film

PVC heat shrinkable film has moderate cost, more uniform longitudinal and transverse shrinkage rate, but the heating time is a little longer.PVC(black) is slightly impurity, black color, and PVC(blue) has better light transmittance. In production, different packaging materials can be selected according to the cost and different design schemes, such as: for the heat shrinkable film with printed graphics, a balanced longitudinal and transverse heat shrinkage rate is required; for loose packaging, too large a heat shrinkage rate, which will deform the object; for cylindrical hard objects, a higher transverse heat shrinkage rate is required to make the film tightly attached to the object. And because the actual heat shrinkage rate of heat shrinkable film is often determined by the size of the packaged object, so in the actual application of heat shrinkable film, not accordingly to achieve its larger heat shrinkage rate, can be adjusted according to the actual requirements.

Nowadays, shrink film technology has developed to the point where every commodity is packaged with it. pvc shrink film packaging protective properties between: in the production process, PVC heat shrinkable film is directed to stretch, and in the use of the process of shrinkage film is subjected to heat shrinkage. The film's heat shrinkability as early as 1936 to obtain application, the beginning of the main use of rubber film to shrink wrap perishable food. In addition, shrink wrapping has been used to make shrink labels and shrink caps so that containers that cannot be easily printed or have complex shapes can be labeled. New applications are constantly being developed.

Main applications: This packaging material can be used not only in the food industry, but also in the packaging of alcoholic beverages, sporting goods, stationery, video products and handicrafts. In addition, the use of this packaging material is very common in our lives, and it is used almost exclusively for packaging.

It has the following advantages:

(1) good transparency, allowing customers to directly see the packaged goods, easy for customers to select goods;

(2) Close to the shape of the goods, can be applied to a variety of shapes of goods packaging, packaging contents of a wide range;

(3) Anti-theft, excellent dustproof;

(4) A variety of commodities can be packaged in a heat-shrinkable bag to prevent the loss of individual small commodities, but also convenient for customers to carry;

(5) Selection of different resins and formulations, can produce different mechanical strength and functionality of the PVC heat shrinkable film, can be used for lower strength, commodity weight smaller inner packaging, can also be used for higher strength requirements of containers with mechanical products, construction materials and other transportation packaging (outer packaging).