The core of high-barrier aluminized PET film lies in its aluminized layer. This extremely thin but dense aluminum film is evenly attached to the surface of the PET substrate through advanced vacuum aluminizing technology to form a solid barrier. This barrier not only effectively blocks the penetration of external substances such as oxygen and water vapor, significantly improves the barrier properties of the film, but also gives it a series of unique functional properties.
1. Block ultraviolet rays and protect products from light aging
Ultraviolet rays are one of the main causes of light aging of many products. When exposed to ultraviolet rays for a long time, the organic components in the product will undergo photochemical reactions, resulting in color fading, hardening or softening of the texture, and performance degradation. The aluminized layer in the high-barrier aluminized PET film has extremely high reflectivity, which can effectively block ultraviolet rays and reflect them back to the outside world, thereby protecting the products in the package from light aging. This feature is particularly important in industries such as food, cosmetics, and pharmaceuticals, because the products in these industries are often sensitive to light and need to maintain freshness and quality for a long time.
2. Improve conductivity to meet the needs of specific industries
The aluminized layer also gives high-barrier PET film good conductivity. In certain specific industries, such as electronic product packaging and electrostatic protection, packaging materials need to have a certain conductivity to prevent product damage or performance degradation caused by static electricity accumulation. As a good conductor, the aluminized layer of high-barrier aluminized PET film can effectively disperse and release static electricity, protecting the electronic products in the package from static interference and damage.
3. Enhance electromagnetic shielding performance and ensure information security
In addition to conductivity, the aluminized layer also improves the electromagnetic shielding performance of high-barrier PET film. With the increasing prevalence of electromagnetic waves, many electronic products and data storage devices need to be protected by electromagnetic shielding to prevent electromagnetic interference and data leakage. As an efficient electromagnetic shielding material, the aluminized layer of high-barrier aluminized PET film can reflect and absorb electromagnetic waves and reduce their penetration ability, thereby protecting electronic products and data storage devices in the package from electromagnetic interference and damage.
The versatility of high-barrier aluminized PET film makes it widely used in multiple industries. Here are some typical application scenarios:
1. Food packaging
In the field of food packaging, the barrier properties and UV protection properties of high-barrier aluminized PET film are particularly important. It can effectively extend the shelf life of food and maintain the freshness and aroma of food; at the same time, the UV protection property can prevent the color fading and texture changes of food due to long-term exposure to light.
2. Electronic product packaging
In electronic product packaging, the conductivity and electromagnetic shielding properties of high-barrier aluminized PET film play a key role. It can prevent damage or performance degradation of electronic products caused by static electricity accumulation; at the same time, the electromagnetic shielding performance can protect electronic products from electromagnetic interference and data leakage risks.
3. Pharmaceutical packaging
Pharmaceuticals have extremely high requirements for packaging materials, and need to meet multiple requirements such as barrier properties, UV protection, moisture and mildew resistance at the same time. High-barrier aluminized PET film has become an ideal choice for pharmaceutical packaging due to its excellent performance characteristics. It can protect drugs from pollution and damage from the external environment and ensure the safety and effectiveness of drugs.
4. Other applications
In addition, high barrier aluminized PET film is also widely used in other fields, such as cosmetic packaging, tobacco packaging, aerospace, etc. In these fields, its barrier properties, UV protection, conductivity and electromagnetic shielding properties are fully utilized and exerted.
