The PET material can be used in the temperature range of 12℃ for a long time, and can withstand the high temperature of 15℃ and the low temperature of -7℃ for a short time, and the high and low temperatures have little influence on its mechanical properties.
PET is a milky white or light yellow highly crystalline polymer with a smooth and shiny surface. It has good creep resistance, fatigue resistance, abrasion resistance and dimensional stability, low wear and high hardness, and has the greatest toughness among thermoplastics: good electrical insulation, little influence by temperature, but poor corona resistance.
advantages of PET as packaging material:
1. it has good mechanical properties, impact strength is 3~5 times that of other films, and folding resistance is good.
2. Oil resistance, fat resistance, dilute acid resistance, dilute alkali resistance, and resistance to most solvents.
3. It has excellent high and low temperature resistance.
4. The permeability of gas and water vapor is low, which not only has excellent gas, water, oil and odor resistance.
5, high transparency, can block ultraviolet rays, good gloss.
6, non-toxic, tasteless, good health and safety, can be directly used for food packaging.