What is the difference between heat shrinkable bags and ordinary bags?

Bags are very common in our lives, such as a series of portable bags such as shopping convenience bags in supermarkets. What kind of bag is the heat shrinkable bag? The heat-shrinkable bag is a special multi-layer co-extruded polyolefin bag. The shape is three-sided sealing and one side opening. It is not much different from ordinary bags, but the characteristics are far different. The characteristics are as follows: 1. It can shrink vertically and horizontally and has a shrinkage ratio. This is one of the differences from ordinary bags. It has good flexibility and can be packaged for any product. 2. It can be welded. Ordinary bags will shrink into a ball and burnt when encountering high temperature, and it can be welded and packaged directly according to the fully automatic semi-automatic machine. It is very strong. 3. Good cold resistance. Because of the special raw materials, the heat shrinkable film can be kept at a temperature of -50 ℃ for a long time without brittleness, which is very suitable for cargo transportation or storage. 4. The heat-shrinkable bag with high transparency is made of a new material without adding impurities such as back material, so its transparency is very high, and the packaging on the product can improve the packaging texture of the product; while the ordinary bag will be dark because it will be added Part of the recycled or recycled materials does not require very high packaging requirements. 5. The environmentally friendly non-toxic raw materials are made of pure materials and the craftsmanship is highly refined. The products produced are non-toxic and tasteless and can be directly packaged for food. Shenzhen Longhua heat shrinkable bag, Guanlan heat shrinkable bag pof shrink film