PET - Polyethylene Terephthalate
PET film is a strong, clear, high-performance plastic film widely used as the outer layer in laminated food packaging.
PET is known for:
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High strength & durability
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Excellent clarity and gloss
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Great printability (colours look sharp and vibrant)
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Good dimensional stability
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Heat resistance
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Moderate barrier against oxygen and moisture
Because of these properties, PET is almost always used as the top layer (outer layer) in structures like:
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PET / PE
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PET / AL / PE
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PET / VMPET / PE
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PET / NY / PE
Types of PET used in packaging
Standard PET (BOPET)
This is the most common PET film used in food packaging.
Features:
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High clarity
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High strength
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Excellent printing surface
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Good stiffness
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Moderate barrier
High-barrier coated PET
PET can also be coated with:
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Alox（Aluminium Oxide）
These coatings significantly increase barrier without using foil.
Matte PET ((M-PET / Matt BOPET)
A matte-finished PET used for premium packaging.
Features:
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Soft matte look
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Anti-glare surface
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High-end, luxury feel
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Same strength as regular PET
Metallized PET (VMPET)
This is PET with a vacuum-deposited aluminium layer.
Features:
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Silver appearance
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Better barrier than regular PET
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Still flexible & printable
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Cheaper than full aluminum foil