The Brittleness Temperature and Cold-Resistant Performance of Plastic Film

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Cold-resistant performance is one of the important properties of flexible plastic packaging film in low temperature environments. Flexible plastic packaging film with good cold resistance can effectively ensure that the finished packaging will not easy to break in cold environments. The cold resistance of soft plastic film is expressed by brittleness temperature T, which reflects the cold resistance performance of this plastic film.

The brittleness temperature refers to the temperature at which plastic film products become brittle under impact loads. Generally, the brittleness temperature T is determined at which 50% of the plastic film samples undergo brittle failure under specified impact conditions.

Plastic film and plastic material will become rigid and brittle as the temperature decreases because the molecular chains of the polymer become less and less motion.

PVC film has poor cold resistance, decreased physical properties decrease following the low down of the condition temperature. The addition of cold-resistant agents and other additives can effectively buffer the impact of low temperature on the film, thereby improving the cold resistance of the plastic film. 

Flexible PVC film produced by POLYSAN is cold-resistant to be -15℃ and -30 ℃, can be applicated in extremely cold environments and maintain good physical properties.