Stretch film is mainly used for product packaging to avoid damage to products during transportation. Winding film is widely used in packaging products in the market, but the quality of some winding films is not very good, so users should polish their eyes when choosing. The following are some indicators about quality evaluation sorted out by ours for you. I hope it will be helpful to you!
1. The product is self-adhesive. Self adhesion refers to the adhesion between winding films after contact. This is in the process of stretching, winding and packaging, so that the product can be tight but not loose. However, self viscosity is affected by many factors. Therefore, it can be used as an important index to judge the quality of wound film;
2. Tension of winding film. Stretching is the elastic elongation of the winding film after being stressed. If the quality of the winding film will be stretched, the length of the winding film will be extended and will not be broken within a certain range. Only with tensile properties can the packaging be better;
3. Toughness of winding film. Its toughness refers to the puncture and tear resistance of the film. The tear resistance risk value must be calculated horizontally. This is because tearing in this direction will loosen the product. Therefore, the better the toughness and quality of Jinan winding film.