The Smaller The Crystallinity Of Thermoforming Film

The polymer crystal size has a certain influence on the effect of thermoforming. Generally speaking, the smaller the crystallinity of Thermoforming Film, the better the stretch formability. Therefore, most thermoforming Thermoforming Films are produced by casting or down-blowing water cooling processes. Both of these two production processes have the ability of rapid quenching, so the thermoforming film produced is less crystalline, which is conducive to hot forming and stretching. In comparison, the casting and down-blowing water cooling of Thermoforming Film have their own advantages and disadvantages. The casting of Thermoforming Film has large output, large width, and uniform film thickness distribution, but the investment is relatively large. Down-blowing water-cooling has faster cooling, high transparency, softer thermoforming film, less investment, but smaller width and lower output. Therefore, it is necessary to determine the suitable production process according to the terminal Thermoforming Film and the order situation.