Stretch wrap film is a deformation stress caused by mechanical stretching device or manual stretching of the film at room temperature. It is a packaging method for packaging and storage. This is a form of packaging that is very popular in the market. Imported resin and advanced film extrusion production process. It has the characteristics of good tensile properties, tear resistance, strong penetration resistance, high transparency, good self-adhesiveness, large shrinkage, tight packaging and no looseness. So how to choose high-quality stretch film? Today, the editor of Shenzhen World-Packing stretch wrap film manufacturer shares with you what are the characteristics of high-quality stretch film? Details are as follows:
- During the packaging process, there must be sufficient tensile strength and tear strength to prevent the stretched film from breaking under the action of tensile tension, and has good pore resistance, to avoid the stretched film from being wound and wrapped The sharp corners of the goods are pierced and have good impact strength.
- It should have good ductility and good viscoelasticity. After the stretch film is packaged, it is tightly wrapped on the product by a high degree of viscoelasticity, and there will be no slack or a long slack time. Generally, it is required to maintain more than 60% of the packaging tension after 6 months of packaging.
- When wrapping the film, the overlapping part of the film and the film should have good adhesion, which is helpful to maintain the tension of the wrapped package, extend the stretch relaxation time of the stretched film, and improve the tightness of the package.
- The stretched film needs to be used at -20-50℃ for a long time, and its performance is unchanged. It can withstand various changes in the environment and has good weather resistance.
- Good heat seal ability, higher heat seal strength and lower heat seal temperature.
- Its price is low, waste packaging is easy to recycle and reuse, and easy to handle.
- Indicates whether the stretched film can prevent moisture or moisture absorption of the product in the ocean or humid environment, that is, the sealing performance after winding.
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Shenzhen World Packing Industrial Ltd
Stretch Film & Packing Tape Specialist , Top China manufacturer
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