Differences between PE Protective Film and PET Protective Film

Understanding the Differences between PE Protective Film and PET Protective Film

When selecting protective film products, customers often have to choose between polyethylene (PE) film and polyethylene terephthalate (PET) film. To make an informed decision, it's essential to first understand what each type of film represents.

Polyethylene film, commonly referred to as PE film, is created from ethylene, a hydrocarbon predominantly sourced from natural gas or petroleum. Known for its versatility, PE film has widespread applications, including use in packing materials, labels, and plastic bags.

On the other hand, polyethylene terephthalate, or PET film, is a widely utilized thermoplastic polymer belonging to the polyester family. It is found in fibers for clothing, liquid containers, and as a material in manufacturing. PET film can also be aluminized by applying a thin layer of aluminum, enhancing its reflective properties while reducing permeability.

Key Differences between PE and PET Protective Films

While both PE and PET protective films can be used for packaging, they have significant differences that affect their suitability for various applications:

Material Composition: PE film is known for its soft texture, while PET film possesses a harder, more rigid structure.

Extensibility: PE exhibits considerable extensibility, with elongation ranging from 150% to 300%, whereas PET lacks this characteristic.

Tensile Strength and Friction Resistance: PET films show superior tensile strength and friction resistance compared to their PE counterparts.

Weather Resistance and Anti-aging Properties: PE can withstand a maximum temperature of about 70°C, while PET is much more resilient, withstanding up to 240°C.

The PE protective film is predominantly used for temporary surface protection for aluminum window and door profiles, glass, and various building materials. Its softness allows it to conform better to the surfaces it protects, making it suitable for both general material and rough surfaces like carpets. However, it is not suitable for high-temperature environments and may degrade under prolonged sunlight exposure, which is why it is recommended to be removed promptly, particularly in hotter climates to avoid adhesive residue.

In contrast, PET protective films often feature a double-layer composite structure. The initial layer is a standard PET film that can support customized LOGOs, while the second layer uses aluminized PET for shading and sealing protection. This combination helps prevent fading and aging of profiles, making it particularly suitable for PVC/UPVC profiles exposed to high UV intensity and temperature fluctuations. Feedback from industry leaders, such as the Xinjiang Branch of Zhongcai Profile, reveals that PET films perform better than alternative protective products, especially in outdoor scenarios.

To select the right protective film, understanding the specific requirements of the customer is crucial. Knowing what the primary concerns are, along with expertise about the surfaces to be protected, can lead to informed choices for the appropriate protective film solutions.

For more information on Firsta, their extensive range of products, and solutions, customers can reach out with their inquiries.

Whether you are looking for Industrial PET Film Wholesale or additional support, our team is well-equipped to assist you.

If you are in need of a reliable Graphic Arts PET Film Manufacturer, please reach out for further assistance and to learn more about how our protective films can benefit your business.