Four physical characteristics of packaging film

Physical characteristics of packaging film:

1, due to its corrosive and fluidity characteristics, try to use equipment and molds. All products must be added with different kinds and quantities of additives as required;

2. Amorphous materials have small moisture absorption and poor fluidity. In order to improve fluidity and prevent bubbles, plastics can be dried in advance. Mold gating system should be thick and short, the gate section should be large, and there should be no dead ends. The mold shall be cooled and the surface shall be chrome plated;

3. When using the nozzle of screw injection machine, the aperture should be large to prevent the dead angle from being delayed. Try not to bring inserts. If there are inserts, they should be preheated. Excellent mechanical and electrical properties, good force, good chemical stability, but low softening point. The surface and shape suitable for making thin plates, wire and cable insulation layers, seals and other goods will leave an impression on people. In this sense, the market prospect of PVC film is promising. In fact, with the development of the times, PVC has gradually won people's favor with its good performance, simple technology and many other advantages, and has been accepted and recognized by more and more people;

4, easy to decompose, at 200 degrees with steel. The easier it is for copper to decompose when it contacts, the corrosion will escape when it decomposes. Irritating gas. The molding temperature range is small;