Stretch film market competition is more and more intense, in the face of so many choices is really dazzling. In order to select a high-quality stretch film, we need to understand the quality of stretch film mainly depends on which reasons, the following together to see it.
1. The retraction stress of the stretch film, also called force retention, is the degree to which the force applied to the stretch film is maintained during the stretching process.
2. The toughness of the stretch film is the comprehensive ability of the stretch film to resist puncture and tear. The tear resistance is only aimed at the degree of tear resistance of the film when it is exposed to tension and punctured.
3. The self-adhesion of stretch film, the adhesion of stretch film after touching each other, can make the package product firm and not loose in the process of winding the product by drawing. Self-viscosity is affected by many external variables
4. The tensile force of the stretch film is the tensile force that changes into the elastic tension of the stretch film after being stretched. Lengthwise stretching increases, which will make the stretch film thin, the width will be shortened. This feature allows our stretch film to better protect and package the product;
5. The strength of the stretch film includes two aspects: tensile rate and tensile force, which means the large tensile force can be exerted under certain conditions to maintain various necessary properties. Tensile strength varies with different uses. The larger the tensile film used, the lower the packaging cost.
