CPP - Cast Polypropylene
It is a soft, strong, heat-sealable polypropylene film widely used as an inner layer in laminated packaging.
CPP is known for:
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Excellent heat-sealability
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High clarity
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Good elongation & flexibility
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Higher temperature resistance than PE
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Good puncture resistance
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It is commonly used in structures like:
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BOPP / CPP (classic snack packaging)
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PET / CPP
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NY / CPP (retort pouches, 121°C)
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PET / AL / CPP (powders, sauces)
Because CPP seals well and handles heat, it is often chosen when the product requires stronger sealing performance than PE can provide.
Types of CPP used in packaging
General CPP (Standard CPP)
The most commonly used CPP.
Features:
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Good clarity
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Standard heat sealing
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Flexible
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Cost-effective
​Retort CPP (RCPP / Retort-grade CPP)
CPP designed to withstand 121°C sterilization.
Features:
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Heat resistance for retort and boiling
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High sealing strength
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Good stability under pressure
High-Barrier CPP
CPP blended with barrier materials.
Features:
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Improved moisture and gas barrier
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Better aroma protection
Anti-fog CPP
Prevents fogging inside refrigerated or fresh produce packaging.
Features:
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Anti-condensation
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High transparency
Metalized CPP (MCPP)
CPP with a metallized surface (vacuum aluminum layer).
Features:
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Shiny silver appearance
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Medium-to-high barrier
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Better flexibility than VMPET
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Improved moisture barrier
Matte CPP
CPP with a matte surface finish.
Features:
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Soft-touch, premium look
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Good print compatibility