The world's first PVDC obtained through laboratory polymerization for linear polymers was in 1930, when the American company Dow Chemical first industrialized it. Due to its excellent oxygen and moisture resistance properties, and no significant decrease in barrier function in high humidity environments, PVDC has received high attention from the military since its application: for a long time thereafter, it was a mysterious material for most people!

In the 1990 Gulf War, all American food was packaged in PVDC soft packaging, which was not only lightweight and fast, but also ensured that the color, aroma, and taste of the food remained basically unchanged. Especially, only PVDC could meet the strict requirement of a shelf life of 3 years for military packaging proposed by the US military.

With the progress of the times, the civilian field of PVDC materials has developed rapidly. At present, PVDC is widely used in packaging of meat products, convenience foods, dairy products, cosmetics, pharmaceuticals, and various products that require high barrier requirements such as oxygen and corrosion resistance, odor and fragrance resistance, water and moisture resistance, oil and permeability resistance, as well as moisture resistance, tobacco and tea, rust resistant hardware products, mechanical parts, and military products.

Don't be too close, let me introduce you to PVDC!

1、 Structure and Performance of PVDC

1. What is PVDC?

PVDC is a thermoplastic polymer with a softening temperature of 160-200 ℃, with a linear polymer chain structure connected at the head and tail; Visually speaking, PVDC replaces the hydrogen atom at one end of the chlorine atom with a chlorine atom based on the structural formula of PVC, which means there is one more chlorine atom than PVC.

PVDC is an ideal packaging material with high barrier property, strong toughness and good low-temperature heat sealing, heat shrinkage and chemical stability. It i