How does the error of stretch film occur? In order to facilitate the transportation of goods, they are wrapped with stretch film, which not only protects the goods to a certain extent, but also ensures that the collision between the goods is reduced and the transportation of the goods is safer. However, we have found that some stretch films often have some errors when they are used. Although these errors do not affect the use, they are sometimes really unfriendly to us obsessive-compulsive disorder. So how do these errors come about?

1. Various volatiles gathered on the top of the oven and the air duct fall onto the film.2. The filter is damaged, the impurity content of the cast piece is high, and the extrusion and longitudinal stretching temperature are set incorrectly;3. The deviation of the crystallization and orientation of the cast piece is too large; there are obvious horizontal stripes and bubbles on the cast piece;4. There are obvious horizontal stripes and bubbles on the cast piece; the chain clip is

Characteristics of stretch film: 1. It has high flexibility, not easy to break, strong blast resistance, strong impact resistance, strong tear resistance, strong tensile force, and can replace box packaging. 2. The shrinkage rate is large, and the items can be tightly wrapped after heat shrinking. If the PE pass-through bag (opening at both ends of the bag) is heat-shrinked, the two ends of the opening can lift the items, which can bear a weight of 15KG, which is convenient for handling.

Environmental protection and our lives Several environmental pollution problems related to physics and related matters for attention Packaging materials say that environment and development are major issues of general concern in today's society. After a long struggle, mankind has made great achievements in transforming nature and developing economy since the industrial revolution in Dongguan stretch film supply. At the same time, due to improper disposal in the process of industrialization, especially the unreasonable development and utilization of natural resources, it has caused global environmental pollution and ecological damage, posing a real threat to human survival and development. Protect the ecological environment and achieve Sustainable development has become an urgent and arduous task for the whole world.

Stretch film, also known as stretch film and heat shrink film, is the first domestic PVC stretch film to be produced with PVC as the base material and DOA as the plasticizer and self-adhesive. The supply of stretch film in Dongguan was gradually eliminated due to environmental protection issues, high cost (relatively heavy in PE, less unit packaging area), poor stretchability, etc., when the domestic production of PE stretch film was started from 1994 to 1995. The PE stretch film first used EVA as the self-adhesive material, but its cost was high and it had a taste. Later, PIB and VLDPE were used as self-adhesive materials. The base material is now mainly LLDPE, including C4, C6, C8 and metallocene PE (MPE).