Good Price Agriculture Reflective Mylar 20mic CPP Polyester Metalized Film for Fruit Orchards

Good Price Agriculture Reflective Mylar 20mic CPP Polyester Metalized Film for Fruit Orchards

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I. Core Characteristics of CPP Metallized Film
CPP (Cast Polypropylene Metallized Film) is made by vacuum metallizing polypropylene film produced through a casting process. It combines the advantages of both a CPP substrate and a metallic aluminum layer. Specific characteristics are as follows:

Physical and Mechanical Properties: Good stiffness and rigidity, not easily deformed, and tear resistance superior to PE film, suitable for high-speed printing and lamination; Excellent heat-sealing performance (especially the CPP heat-sealing layer), allowing direct heat sealing without additional adhesive or lamination; Wide temperature range (-20℃~120℃), capable of withstanding high-temperature sterilization (such as pasteurization of some food packaging), and not easily brittle at low temperatures.

Barrier Properties: The aluminized layer (typically 300~500Å thick) effectively blocks oxygen (OTR≤1cm³/(m²・24h・0.1MPa)), water vapor (WVTR≤1g/(m²・24h)), and light (especially ultraviolet light), extending the shelf life of packaged goods; Barrier properties are slightly lower than VMPET, but far superior to un-aluminized CPP or PE film.

Other characteristics: Medium transparency (silver-gray after aluminizing, transparent in un-aluminized areas), good gloss, metallic texture, enhancing packaging aesthetics; Strong chemical stability, resistant to acids, alkalis, and oils, suitable for packaging oily or acidic foods; Lightweight (0.91g/cm³), lighter than VMPET (1.4g/cm³), reducing transportation and packaging costs; Good recyclability (polypropylene material), more environmentally friendly than some composite films.

II. Specific Applications of CPP Aluminized Film

Based on its core advantages of "barrier properties + heat-sealing properties + lightweight," it is widely used in the following fields:

1. Food Packaging (Core Application Scenarios)

Snack Foods: Outer packaging for potato chips, biscuits, candy, chocolate, and nuts (often laminated with PE film to form a "CPP aluminized + PE" structure, combining barrier and heat-sealing properties);
Dried Goods: Packaging for tea, coffee, milk powder, oatmeal, and dehydrated vegetables (barrier against oxygen and moisture, extending shelf life);
Oil and Fat Foods: Packaging for edible oils, sauces, meat products, and seafood (oil-resistant, strong barrier properties, preventing oxidation and spoilage);
Microwaveable Foods: Packaging for some microwaveable frozen and ready-to-eat foods (high temperature resistant, can be directly heated).

2. Daily Necessities Packaging

Cosmetics: Inner film of outer packaging boxes for face masks, skincare products, and shampoos (barrier against moisture and oxygen, protecting active ingredients);
Daily Necessities: Packaging for tissues, wet wipes, sanitary napkins, and diapers (moisture-proof, dust-proof, enhances texture);
Tobacco Packaging: Inner packaging film for cigarettes (strong barrier properties, maintains tobacco dryness and flavor).

3. Industrial and Other Packaging

Electronic Components: Packaging for resistors, capacitors, chips, etc. (moisture-proof, anti-static, dust-proof);
Pharmaceutical Packaging: Outer packaging for some medicines (strong barrier properties, protects drug stability, must meet pharmaceutical-grade standards);
Composite Film Substrates: Composite with PET, PE, NY (nylon), etc., for heavy-duty packaging (e.g., fertilizer, feed bags) or high-barrier applications (e.g., vacuum packaging).