포장재 가이드: BOPP

Question 1

What is BOPP film used for in flexible packaging?

Accepted Answer

BOPP (biaxially oriented polypropylene) is commonly used as an outer printable layer in laminated flexible packaging for snack, bakery, candy and biscuit products. It provides good clarity, print surface and machinability for automatic packing machines.

Question 2

Is BOPP film suitable for food packaging?

Accepted Answer

Yes. BOPP film is widely used in food packaging, especially for snack packaging roll film, biscuit packaging and candy wrapping. It should be used as part of a laminated structure with a sealing layer such as CPP or PE.

Question 3

What is the difference between BOPP and PET film?

Accepted Answer

BOPP provides good clarity and cost-effectiveness for lightweight snack packaging. PET offers higher stiffness and heat resistance. The choice depends on product type, packing machine and barrier requirements.

Question 4

Can BOPP film provide high barrier protection?

Accepted Answer

BOPP alone provides moderate moisture barrier but limited oxygen barrier. For products requiring higher barrier, BOPP can be laminated with barrier layers such as VMPET, aluminum foil or high barrier coatings.

Question 5

What information is needed before quoting BOPP-based packaging?

Accepted Answer

Product type, filling weight, roll width, thickness, material structure, printing colors, artwork file, packing machine type and target market requirement.