How does POF shrink film achieve shrinkage effect?

Shrink film is a new type of environmentally friendly packaging material with high transparency, high shrinkage, high toughness, high heat sealing and static electricity prevention properties. It is a relatively full of soft shrink packaging materials. There are many kinds of shrink film on the market, among which POF shrink film has gradually become the mainstream of shrink packaging due to its non-toxic, environmentally friendly, high transparency, high shrinkage, good heat sealing performance, high gloss, high toughness, tear-resistant and other characteristics. As a result, the market appeared a lot of POF shrink film factory, product quality is also mixed.

When many customers using POF shrink film found POF shrink film packaging effect is poor, that is, the contraction effect is not good, generally believe that the POF shrink film quality problems. Here is a misunderstanding, in fact, there are many factors affecting the shrinkage effect of POF heat shrink film, POF shrink film poor quality is not the only factor. Here, I briefly explain the impact of POF shrink film shrinkage effect of several factors.

1, most people use POF shrink film, found that the shrinkage effect is poor, POF shrink film itself is not surprisingly poor quality. POF shrink film quality does directly affect its shrinkage effect. For example, the new material POF shrink film and POF shrink film doped with recycled materials in the transparency and shrinkage there is a clear difference. POF shrink film made of adulterated recycled materials on the market, the cost and selling price are lower than the former, so the phenomenon of substandard is not uncommon.

2, POF shrink film shrinkage temperature impact. Shrinkage effect is linked to the actual shrinkage temperature, too high a temperature is likely to lead to plastic film shrinkage cracking; when the temperature is low, POF shrink film shrinkage effect will be uneven. Therefore, manufacturers need to adjust the temperature many times to find the right temperature value when producing POF shrink film.