In many materials, some people often can't distinguish similar materials, such as stretch film and protective film, many people can't distinguish them, and often confuse the two, let's talk about the difference between them today.
Typically, stretch films are filled with adhesive additives such as PIB masterbatches. It is machined by casting and has a slightly sticky surface that can stick to itself.
Stretch film:
It is mainly used to wrap objects and play a fixed role. There are many kinds of protective films, the most common is to coat a layer of glue on the surface of blown polyethylene film, just like Scotch tape in daily life.
Mainly used to protect solid surfaces. Can be torn off when not in use. In short, stretch film is self-adhesive and protective film is a layer of glue on the surface of the film. The stretch film is very similar to the plastic wrap we usually use, but the difference is that it is for industrial use, and the plastic wrap is for food.
Protective film:
It is a transparent, elastic, non-toxic and harmless soft polyethylene plastic film, which conforms to international environmental protection and hygiene standards. Vertical and horizontal bidirectional cold stretching is possible without heating. It can self-adhesive packaging various products and keep the tension of the goods from loosening for a long time. It has high strength, high elastic tension, and can tightly wrap any shape of goods, the overall package.
What is the difference between stretch film and protective film?
1. The material is the same, but the process is different:
The stretch film is made of polyethylene, which has good toughness and is not easy to be crushed by ordinary plastic crushers, while the main material of the protective film is ethylene, which is made by polymerization. According to the different materials and plasticizers used, protective films can be divided into various types and are suitable for different types of occasions.
2. Different uses:
Stretch film is mainly used for the sales and transportation of wine, canned food, mineral water, various beverages, cloth, non-food, medicine packaging and other products, while protective film is mainly used for microwave food heating, refrigerator food preservation, fresh cooked food packaging And other occasions, in family life, supermarkets, hotels and industries produce food packaging.
3. The starting point of environmental protection is different:
Stretch film material PE can reduce air pollution, waste disposal, recycling and overall packaging costs, while some protective film manufacturers use PVC material. This plasticizer can penetrate from the plastic wrap into packaged foods with high fat content at room temperature, causing great harm to the human endocrine system.
The difference between the above stretch film and protective film is shared here. When you choose stretch film and protective film, you have to look clearly. In fact, they are also very different.
