PP Bag Products

Polypropylene is a thermoplastic polymer that has a wide range of applications from parts used in the automotive industry to textile and food packaging. The polypropylene obtained by polymerization of the monomeric propylene is extremely resistant to chemical solvents (acids and bases).

The most common commercial polypropylene has a level of crystal structure between low density polyethylene (LDPE) and high density polyethylene (HDPE). The Young’s modulus (modulus of elasticity) is also moderate. However, LDPE is less hard and HDPE is much less. This allows the use of polypropylene in place of engineering plastics such as ABS.

Polypropylene is very resistant to fatigue. Low cost, good impact resistance. The coefficient of friction is low and provides very good electrical insulation. Chemical resistance is good. Suitable for all thermoplastic processing processes. Polypropylene has a melting temperature of about 160 degrees Celsius.

However, it has the following disadvantages. It has low UV ray resistance, high thermal expansion. Paint and coating are difficult. It is resistant to outside weather conditions and is open to oxidation. It is flammable and interacts with chlorine-containing solvents.