What is the general material of food packaging bags

What is the general material of food packaging bags

Nowadays, the most important food packaging materials is PP and PE, which is polypropylene and polyethylene plastic. Compared with the safety performance, both of these can satisfy the food packaging. For now, there is no report on the problems of products such as PP in the world.

Other materials and features
1. Material: BOPP/LLDPE two-layer composite
Features: moisture-proof, cold-resistant, low-temperature heat seal
Uses: instant noodles, snacks, frozen snacks, powder packaging, etc.
2, material: BOPP / CPP two-layer composite
Features: moisture, oil, high transparency, good stiffness
Uses: instant noodles, biscuits, candy, all kinds of light food
3, material: BOPP / VMCPP composite
Features: moisture-proof, oil-resistant, oxygen-proof, shading, good stiffness
Compound bag
Uses: all kinds of dry food, fried food, potato chips
4, material: BOPP / VMPET / LLDPE three-layer composite
Features: moisture, oxygen, shading
Uses: all kinds of food, metric snacks, snacks, tea

Compared with non-food packaging, it does not contain plastic additives. It does not release toxic substances during use. For example, the relatively fierce plasticizer in front of it can cause cancer and is used in PVC packaging. Previous cling film was made of PVC, but because of its insecurity, it is now being replaced by PE cling film.

PE's softness and mechanical properties are worse than PP, which means that the products have general supermarket shopping bags, plastic wrap, garbage bags and so on.
PP is hard, anisotropic (it is easy to tear open with a gap), good mechanical properties, high temperature performance is better than PE, it is a bread bag
PP and PE are widely used