Industry News

Versatile Polypropylene Film Coated with Aluminum: Enhancing Barrier Properties and Structural Integrity


Polypropylene (PP) film coated with aluminum (Al) and featuring a center margin is a versatile material with a wide range of applications across various industries. This specialized film combines the advantageous properties of polypropylene with the protective and barrier properties of aluminum, making it suitable for diverse uses including packaging, insulation, and more.

Base Film: Polypropylene (PP)
Polypropylene is a thermoplastic polymer known for its excellent balance of properties, including high strength, good chemical resistance, and flexibility. PP films are widely used in packaging due to their clarity, moisture resistance, and ability to be easily sealed. The inherent properties of PP make it an ideal substrate for further treatment, such as metal coating.

Coating Metal: Aluminum (Al)
Aluminum coating provides several important benefits to the PP film. Aluminum is highly impermeable to gases and moisture, offering excellent barrier properties that help to extend the shelf life of packaged products. Additionally, aluminum adds strength and rigidity to the film, enhancing its durability and suitability for various applications. The reflective surface of aluminum also provides thermal insulation, making it useful for applications requiring temperature control.

Normal Thickness Range: 2.0μm to 12.0μm
The thickness of the aluminum coating on the PP film can vary within the range of 2.0μm to 12.0μm, depending on the specific requirements of the application. Thicker coatings may provide enhanced barrier properties and opacity, while thinner coatings offer cost savings and flexibility.

Margin Type: Middle
The inclusion of a center margin in the film design adds structural integrity and facilitates handling during processing and packaging. The middle margin ensures even distribution of the film material and provides a clear demarcation between sections, which can be advantageous for applications requiring precise cutting or sealing.

Coating Side: Single or Double
The aluminum coating can be applied to either one side (single-coated) or both sides (double-coated) of the PP film, depending on the desired performance characteristics. Single-coated films are suitable for applications where barrier properties are required on one side, such as food packaging. Double-coated films offer enhanced barrier properties and are often used in applications requiring maximum protection against moisture and oxygen ingress.

Edge Structure: No Heavy Edge
The absence of a heavy edge structure ensures uniformity and consistency in the film profile, minimizing the risk of defects or inconsistencies during processing and application. Smooth edges promote efficient sealing and handling, contributing to overall product quality and performance.

The PP film with center margin and aluminum coating finds widespread use across various industries, including:

Food Packaging: Barrier properties provided by the aluminum coating help preserve the freshness and quality of packaged food products.
Pharmaceutical Packaging: Ensures protection and stability of pharmaceutical formulations by preventing moisture and oxygen ingress.
Insulation: Reflective properties of aluminum contribute to thermal insulation in construction and automotive applications.
Electronics: Provides protection against moisture and static discharge in electronic components and devices.

The combination of polypropylene film with aluminum coating, featuring a center margin design, offers a versatile and high-performance material suitable for a wide range of applications where barrier properties, strength, and flexibility are paramount. The customizable thickness, coating side, and margin type make this film adaptable to diverse industry needs, making it a preferred choice for packaging and protective applications.