CPP stands for Cast Polypropylene, and offers a range of beneficial properties, making it suitable for various packaging and industrial applications. CPP film typically has excellent transparency, good flexibility and softness, good moisture resistance, heat sealability, tear-resistance, and chemical resistance.
CPP film is produced through the extrusion process of polypropylene (PP) and differs from BOPP (biaxially oriented polypropylene) film. It belongs to the category of non-oriented films and possesses excellent transparency, high glossiness, good rigidity, effective moisture barrier, outstanding heat resistance, and ease of heat sealing.
Non-Oriented Film
| Density | 0.9 g/cm³ |
| Usage Temperature | 0℃ ~ 135℃ |
| Common Thickness | 20μm ~ 100μm |
NIAITE offers various CPP film types to meet different packaging requirements.
PP film, or polypropylene film, is a thin film primarily composed of polypropylene (PP) as its main raw material.
Polypropylene is a semi-crystalline thermoplastic with the following characteristics:
PP (Polypropylene), CPP (Cast Polypropylene), and OPP (Oriented Polypropylene) are all types of polypropylene films with distinct characteristics and applications.
| Characteristics | PP | CPP | OPP |
|---|---|---|---|
| Properties |
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|
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| Applications | Commonly used for packaging (such as for snacks, textiles, stationery, and various consumer goods), labels, and various applications in both industrial and consumer products. | Used for flexible packaging applications, such as food packaging, overwraps, and adhesive tapes. Its enhanced flexibility makes it suitable for applications requiring a formable and durable film. | Widely used in packaging for various products, including snacks, confectionery, and other consumer goods. Its excellent printability makes it suitable for labels and flexible packaging. |
Following printing, lamination, and bag making, CPP film finds widespread applications in packaging for food, pharmaceuticals, paper products, clothing, daily necessities, and industrial goods.
| Film Type | Characteristics | Materials Structure | Applications |
|---|---|---|---|
| Highly transparent/low-temperature heat-sealing film |
|
BOPP (Printing)/CPP | Jelly and Pudding Packaging Bags |
| Metalized Material/Film |
|
BOPP (Printing)/MCPP | Packaging for expanded food items, cereal bags, etc. |
| Retort Film |
|
PET/NY/AL/RCPP | Packaging for sauce, and meat products requiring high-temperature sterilization applications. |
| Refrigeratable CPP (Retortable Film) |
|
BOPP/CPP | Packaging for items such as dumplings, and other products that require refrigeration while also demanding transparent visibility. |
After undergoing printing and bag making, CPP film is extensively used in the packaging of clothing, knitwear, floral arrangements, documents, and photo albums, as well as in food packaging for both barrier properties and decorative metallic films.
There is a growing demand in various sectors such as food outer packaging, candy packaging (twist films), pharmaceutical packaging (IV bags), adhesive tapes, business card holders, ring binders, and other applications.
CPP film exhibits excellent heat resistance due to the high softening point of PP, which is approximately 140°C. This makes it suitable for applications in hot-fill packaging, retort pouches, and aseptic packaging.
Its resistance to acids, alkalis, and oils further enhances its suitability, making it a preferred material for packaging bread products and laminating materials. The film is safe for food contact, demonstrating excellent performance without affecting the flavor of the packaged food.
CPP film is widely used in various flexible packaging applications.
CPP is often used as the sealant layer in retort pouches thanks to its heat resistance and seal strength. RCPP (≤135℃) and SCPP (≤121℃) are commonly used for high-temperature sterilization applications.
In laminates with BOPP or PET as outer layer, CPP provides strong seals for various snacks and candies. MCPP (metalized CPP) is used for expanded food items and cereal bags.
Refrigeratable CPP can be used under -18°C refrigeration conditions, suitable for cold chain packaging that needs flexibility and reliable sealing at low temperature, such as dumplings packaging.
Contact our team with your product requirements, barrier needs, and packaging specifications.
Our experts will recommend the optimal CPP structure (PET/CPP or RCPP) for your application based on your specific requirements.
We'll produce your custom CPP-based packaging and ship it to your location worldwide.
Explore our flexible packaging solutions that utilize CPP film for superior performance and appearance.
Retort pouches with CPP for heat resistance.
Frozen food packaging with CPP/PE structure.
Vacuum pouches with CPP for heat sealing.
Pet food pouches with CPP heat seal layer.
Do not find what you are looking for?
Contact Us for Custom SolutionsCommon questions about CPP film properties, applications, and selection for flexible packaging.
CPP (Cast Polypropylene) film is a versatile packaging material known for its excellent heat sealability, clarity, and moisture barrier. Its main advantages include good heat resistance (up to 135°C), excellent seal strength, good moisture barrier, and cost-effectiveness for heat-seal applications.
CPP-based packaging is ideal for products requiring heat sealing and moderate barrier protection. Common applications include retort packaging, frozen foods, vacuum pouches, pet food, and products requiring heat resistance during filling or processing.
CPP (Cast Polypropylene) is produced through a casting process, while RCPP (Retort CPP) is specifically designed for high-temperature retort applications. RCPP can withstand temperatures up to 135°C during retort sterilization, making it ideal for retort pouches, while standard CPP is suitable for lower-temperature applications.
Yes, RCPP (Retort CPP) is specifically designed for retort packaging and can withstand retort sterilization temperatures up to 135°C. It provides excellent heat sealability and maintains seal integrity during the retort process, making it ideal for retort pouch applications.
Common CPP film thicknesses include 40μm, 50μm, 60μm, and 70μm. The selection depends on your specific application requirements, heat resistance needs, and barrier requirements. Thicker films provide enhanced barrier and durability for demanding applications.
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