- Jul 14, 2017 -
Pet-free film is milky or light yellow, highly crystalline polymer, smooth surface gloss. Excellent physical and mechanical properties within a wide temperature range long-term use of temperature up to 120 ℃, excellent electrical insulation, even at high temperature and high frequency, its electrical performance is still good, but the corona resistance is poor, creep resistance, fatigue resistance, friction resistance, dimensional stability is very good.
Pet off Film General performance Index reference: Tensile strength 152MPa; bending modulus (dam) 10343MPa; cantilever beam impact strength (OD) 85j/m; 1. 67. Thermal deformation temperature 1. 8MPa 224 ℃, melting point 254 ℃, Oxygen index 33% UL flame retardant v 10, hot line ignition $number s, Volume resistivity is ten, R]ohm-cm, dielectric strength 16. 9kv/mm; dielectric constant 103Hz 3. 8, 3 Hz. 7. Dielectric loss 103Hz 0. 011, 0. 018
The advantages of pet-free film as packaging material:
① has good mechanical properties, the impact strength is $number times of other films, good folding resistance.
② oil resistance, fat resistance, dilute acid, dilute alkali, resistance to most solvents.
③ has excellent resistance to high and low temperature performance, can be used in 120 ℃ temperature range for a long time, the short-term use can withstand 150 ℃ high temperature, can withstand -70℃ low temperature, and high, low temperature on its mechanical properties of very small.
④ gas and water vapor permeability is low, both excellent resistance to gas, oil and odor performance.
⑤ high transparency, can block ultraviolet rays, good gloss.
⑥ non-toxic, tasteless, good health and safety, can be directly used in food packaging.