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What is cast polypropylene film?

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Hello, manufacturers specializing in the plastic industry for many years will answer for you
cast polypropylene film is a polypropylene film produced by casting process. It can be divided into ordinary CPP and cooking CPP. It has excellent transparency, uniform thickness and uniform performance in vertical and horizontal directions. It is generally used as the inner layer material of composite film. The thickness of ordinary CPP film is generally 25 ~ 50 μ M. after compounding with OPP, it has good transparency, bright surface and strong hand feeling. This material is used in general gift bags. The film also has good heat sealing property. The thickness of cooking grade CPP film is generally 60 ~ 80 μ M, it can withstand high-temperature cooking at 121 ℃ for 30 minutes, has good oil resistance and air tightness, and has high heat sealing strength. Generally, the inner layer of meat packaging adopts cooking grade CPP film
CPP film has the characteristics of good transparency, high gloss, good stiffness, good moisture resistance, excellent heat resistance and easy heat sealing, and its inclusion resistance and packaging machinery applicability are better than polyethylene film, so it occupies a certain position in the field of packaging film. CPP film is used for the packaging of food, stationery, groceries and textiles after printing and brushing, It can also be used after compounding with other thin films. It is generally used as the inner and outer layer material of composite films. It is applied to the packaging of various foods, including foods that need to be heated and sterilized, condiments, soups and daily necessities
PP plastic (polypropylene) English Name: specific gravity: 0.9-0.91 g /cubic centimeter
molding shrinkage: 1.0-2.5%
molding temperature: 160-220 ℃
material properties: low density, strength, stiffness, hardness and heat resistance are better than low-pressure polyethylene. It can become brittle at low temperature, not resistant to mold and easy to aging It is suitable for making general mechanical parts, corrosion-resistant parts and parts at about 100 degrees It has good electrical performance and high-frequency insulation, which is not affected by humidity, but the edge parts
hope to adopt, thank you.

cast polypropylene film is a polypropylene film produced by casting process

it is divided into general CPP (GCPP) film, metallized CPP (mCPP) film and export CPP (rcpp) film. It has excellent transparency, uniform thickness and uniform longitudinal and transverse performance. It is generally used as the inner layer material of composite film. The thickness of ordinary CPP film is generally 25 ~ 50 μ M. after compounding with OPP, it has good transparency, bright surface and strong hand feeling. This material is used in general gift bags. The film also has good heat sealing property. The thickness of cooking grade CPP film is generally 60 ~ 80 μ M, it can withstand high-temperature cooking at 121 ℃ for 30 minutes, has good oil resistance and air tightness, and has high heat sealing strength. Generally, the inner layer of meat packaging adopts cooking grade CPP film

process characteristics

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the CPP process generally adopts the T-die method. The characteristics of this method are as follows:

(1) the flat film method omits the film blowing stage of the tube film method, which is easy to start and has less waste

(2) in the production of flat film method, PP molecules are arranged orderly, so it is conducive to improve the transparency, luster and thickness uniformity of the film, which is suitable for advanced packaging

(3) there is a special retention groove in the flat film, which can be integrated with the die gap and easy to adjust

flow chart of casting polypropylene production process

schematic diagram of CPP film production process

what is cast polypropylene film? The answer is, as the name suggests, it is a product formed by melting PP (polypropylene) evenly onto a steel strip with high finish and shaping.

cast polypropylene film is a polypropylene film produced by casting process. It can be divided into general CPP (GCPP) film, metallized CPP (mCPP) film and export CPP (rcpp) film. It has excellent transparency, uniform thickness and uniform longitudinal and transverse performance. It is generally used as the inner layer material of composite film. The thickness of ordinary CPP film is generally 25 ~ 50 μ M. after compounding with OPP, it has good transparency, bright surface and strong hand feeling. This material is used in general gift bags. The film also has good heat sealing property. The thickness of cooking grade CPP film is generally 60 ~ 80 μ M, it can withstand high-temperature cooking at 121 ℃ for 30 minutes, has good oil resistance and air tightness, and has high heat sealing strength. Generally, the inner layer of meat packaging adopts cooking grade CPP film.

cast polypropylene film is a polypropylene film produced by casting process. Through melt casting quench production, non tensile, non directional flat extruded film. Compared with film blowing, it is characterized by fast production speed, high output, good transparency, gloss, thickness uniformity and excellent balance of anisotropic properties. At the same time, because it is a flat extruded film, the subsequent processes such as printing and compounding are very convenient, so it is widely used in the packaging of textiles, flowers, food and daily necessities.

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