What is shrink wrap?

Is shrink wrap the same as cling film?

1. Different in nature

1.1. Stretch film: The first domestic production of PVC stretch film using PVC as the base material, DOA as the plasticizer and self-adhesive effect.

1.2. Fresh-keeping film: a plastic packaging product, usually made by polymerization using ethylene as a masterbatch.

2. Features of plastic wrap:

2.1 Easy to be pulled out and cut;

2.2 Easy to combine with glass ceramics and stainless steel masks (but the plastic wrap itself does not combine);

2.3 Nearly transparent, no wrinkles, with varying thickness;

2.4 Can withstand general pulling force.

Is shrink wrap the same as cling film?

1. Different in nature
2. Stretch film: The first domestic production of PVC stretch film using PVC as the base material, DOA as the plasticizer and self-adhesive effect.
3. Fresh-keeping film: a plastic packaging product, usually made by polymerization using ethylene as a masterbatch.

Why does a heat-shrink film shrink greatly when it is heated? Does the stretched plastic film act as a heat-shrinkable film?

Shrink film in the state of heat, the irregular arrangement between the original molecules has changed, in the infrared radiation and other thermal radiation, plastic molecules rearrangement, so that the original area greatly reduced.

The contraction materials commonly used are PVC, POF, PE and so on. At present, POF shrinkable film: the most widely used, with its high surface gloss, good toughness, tear strength, heat shrinkable uniform and suitable for automatic high-speed packaging, especially the good advantages of environmental protection is recognized by the majority of manufacturers, can also be called environmental shrink film, so the use of a very wide range; PVC shrink film: chemical name: polyethylene, a toxic material, not environmental protection, low toughness, gradually replaced by POF, generally suitable for chemical non-environmental protection industry; PE shrinkable film: generally used in the beverage industry the most widely, characteristics: good flexibility, impact resistance, tear resistance, not easy to damage, not afraid of moisture, shrinkage rate, suitable for the product is relatively heavy shrinkable film packaging. Suitable for cans, glass bottles, beer, mineral water and other large quantities of automatic shrink packaging goods.

How does shrink wrap work?

By using a hot air blower or a heat shrink machine to heat the shrink film or shrink tube, it expands in a highly elastic state and cools rapidly at the same time to tightly wrap the product.

Is shrink wrap safe for food?

Food packaging is the foundation of food safety, and food safety is the most important part of food packaging. We use food-grade shrink film to be safe for the human body.