포장재 가이드: PE

Question 1

What is PE film used for in flexible packaging?

Accepted Answer

PE (polyethylene) is the most common heat sealing layer in laminated flexible packaging. It provides reliable seal strength, flexibility and food contact compliance. It is used as the inner layer in pouches and roll film structures.

Question 2

What types of PE are used in food packaging?

Accepted Answer

Common types include LDPE (low density, good flexibility), LLDPE (linear low density, good puncture resistance) and HDPE (high density, higher stiffness). The choice depends on product type, sealing temperature and packaging format.

Question 3

Is PE film food-grade?

Accepted Answer

Yes. Food-grade PE is standard in flexible packaging. The specific grade should be confirmed for the intended food type, filling temperature and regulatory requirements of the destination market.

Question 4

Can PE be used as the only layer in packaging?

Accepted Answer

PE monolayer film can be used for some simple packaging applications, but most food packaging uses PE as the sealing layer in a multi-layer laminated structure for improved barrier, printing and mechanical properties.

Question 5

What information is needed before quoting PE-based packaging?

Accepted Answer

Product type, filling weight, bag size or roll width, material structure, thickness, quantity, printing colors, artwork, target market and China OEM or domestic warehouse handover requirement if applicable.