How to distinguish the quality of stretch wrapping film?
The stretch film has the characteristics of high transparency, high longitudinal elongation, high transverse tear strength, and good puncture performance. Widely used in the packaging of hardware, chemical, food and other products.
Stretch film wraps the goods tightly for easy transportation. Deformation stress generated by mechanical stretching devices or artificially stretched films is a very common form of packaging in the world. The stretch film adopts imported resin and advanced film extrusion production technology. It has good tensile properties, tear resistance, strong penetration resistance, high transparency, good self-adhesion, high shrinkage, tight packaging, and no looseness. It can be widely used in single-piece or tray packaging of chemical raw materials, fertilizers, food , mechanical and electrical products, textile products and other bundled packaging. The stretch film has good sealing performance, high low temperature shrinkage rate, extremely high transparency and good gloss, and shrinks quickly at low temperature. It is suitable for small packaging and used in the food field.
Stretch wrap film is different from general stretch film. It has high requirements for tensile properties and puncture resistance. Therefore, we have to pay attention to the film quality. So how to distinguish the quality of the stretch wrapping film?
Stretch film quality inspection: Stretch film often encounters the problem of poor stretchability during use, which may easily lead to non-compliant packaging, and its main effect on wrapping packaging is greatly reduced. Therefore, consumers should pay attention when purchasing stretch film, and test and identify it.
The stretchability is good or bad, first tear from the length direction of the stretch film, and then tear from the horizontal direction. The stretched film will have a strong impact force. If the toughness is not good, it is easy to tear. If it is too thin, otherwise the toughness will be greatly reduced and the stretchability will be poor.
