How to judge whether there are quality problems in the stretch film?
The method to judge whether there are quality problems in the stretch film is as follows:
1. Low tensile ratio, breaking at a stretch
The problem of low stretching rate is caused by the raw materials of the stretch film, which can be caused by the poor raw materials. Many stretchfilm manufacturers use pure raw materials as a selling point, but the sold stretching film is made of a large number of recycled materials.
2. Poor self adhesion
The self-adhesiveness of the stretch film is not glue, but a viscosity increasing agent in the formula, and the number of viscosity increasing agents is determined by the role that can be reached through level by level adjustment. The combination of the tensile function and self adhesion of the coiled film can show the firm coiled film.
3. Black spot or mottle
Black spots and speckles do not have a very serious impact on the quality of the stretch film.Why do black spots appear? It is because the raw material barrel is not cleaned completely when it is used, or the impurities splashed into the surrounding environment.
