Aluminum-Coated PET Film

Aluminum-coated PET film is a barrier film formed by the vacuum aluminum-coating process. A thin layer of aluminum atoms is deposited onto high-quality PET film.

1. Introduction

Aluminum-coated PET film is created by vacuum-coating a thin layer of aluminum atoms onto premium PET film. The barrier film thus formed has a shiny metallic luster. It also has excellent gas and light barrier properties. Resistant to moisture, heat, and punctures are their performance. It is a viable alternative to aluminum foil. Not just cost-effective, but it also has aesthetics and reliable barrier properties.

The most widely used aluminum-coated films are Polyester Aluminum Film (VMPET) and CPP Aluminum Film (VMCPP). These films combine the properties of plastic films with the metallic properties of aluminum. An aluminum coating on the film surface provides light blocking and UV protection. The shelf life of the contents can be extended. It also enhances the brightness of the film. It can replace aluminum foil to a certain extent. Cost-effective, aesthetically pleasing, and with good barrier properties are their features. So, aluminized film is widely used in composite packaging.

2. Advantages of Aluminum-Coated PET Film

2.1 Significant Aluminum Reduction

With thicknesses ranging from 4.5 to 12 micrometers, the aluminum layer is approximately 0.05 micrometers thick. This results in aluminum consumption being about 1/140 to 1/180 compared to aluminum foil. The production speeds reach up to 450m/min.

2.2 Excellent Flexibility and Toughness

These films have excellent resistance to folding. And there are very few pinholes, cracks, or wrinkles. This enhances barrier properties against gases, water vapor, odors, and light.

2.3 Superior Metallic Luster

The films boast a high reflectivity of up to 97%. Besides, the coating can be treated to form a colored film. The decorative effect goes beyond aluminum foil.

2.4 Partial Aluminum Coating

Partial aluminum coating is possible using shielding technology. Form various patterns or transparent windows view content.

2.5 Good Conductivity and Sealing Properties

The aluminum layer exhibits good conductivity, eliminating static electricity. It also ensures excellent sealing, particularly important when packaging powdery products, preventing contamination of the sealed area and ensuring packaging integrity.

2.6 Adaptability to Post-Processing

These films exhibit good adaptability to post-processing methods such as printing and lamination.

3. Technical Specifications

Aluminum thickness typically ranges from 0.02 to 0.06 micrometers, measurable with a light density meter.

The aluminum layer is uniform. The thickness deviation measured at 120m in the longitudinal direction is less than 10%. The thickness deviation measured at 18 horizontal points is less than 5%.

Adhesion of the aluminum layer is tested using adhesive tape. So it does not peel off when the tape is removed.

UV transmittance is below 5%.

4. Application Range of PET Aluminum Film

PET aluminum film finds extensive applications in various industries. It offers versatile solutions for packaging, printing, and specialized materials. Its adaptability spans diverse sectors, including:

4.1 Food Packaging

PET aluminum film is widely used in the packaging of food products. It provides a protective barrier against external factors. So it contributes to the preservation of product quality. The film has good compatibility with composite materials. It has become a valuable option for creating advanced and versatile packaging solutions.

4.2 Tobacco Industry Packaging

In the tobacco sector, this film serves packaging needs. It ensures the integrity and freshness of tobacco products.

4.3 Printing

The film’s surface characteristics make it suitable for printing applications. It enhances visual appeal and branding opportunities.

4.4 Self-Adhesive Labels

PET aluminum film is employed in the production of self-adhesive labels. It adds a layer of protection and aesthetic appeal.

4.5 Luxury Packaging

Its application extends to high-end packaging. It is used in high-quality cigarette and alcohol packaging. It is also used in gift boxes made of gold and silver cardboard.

4.6 Various Industries

In addition to packaging, PET aluminum film is also used in a variety of industries. These industries include but are not limited to milk powder, tea, pharmaceuticals, and general food packaging. It is also used in the manufacture of laser anti-counterfeiting materials.

5. PET Base Material Advantages

PET has many advantages as a base material. The best of these are excellent transparency and flexibility. The inherent qualities of PET make it suitable for different manufacturing processes such as stretching and blown film. This versatility is particularly beneficial for a variety of packaging and printing applications.

6. Advantages of PET Aluminum Film

6.1 Effective barrier properties

The aluminum coating on PET film provides effective barrier properties. This barrier prevents the intrusion of oxygen, moisture, and light. This makes it a reliable choice for packaging in industries such as food, pharmaceuticals, and cosmetics. Helps extend shelf life and prevent oxidation.

6.2 Conductive properties

PET aluminum film has excellent conductive properties. It is suitable for applications in electronic components, touch screens, and related fields.

6.3 Solar and LED applications

Its use extends to the solar field. Contributes to the production of solar panels and LED backlight modules. Here, it enhances light reflectivity and use. It improves the overall performance and efficiency of the product.

6.4 Functional Materials

PET aluminum film is employed in the creation of functional materials such as conductive films and thermal insulation films. These materials find applications in diverse industries, including electronics, construction, and automotive.

Overall, the widespread use of PET aluminum film highlights its versatility and effectiveness across multiple industries. It provides a range of benefits from barrier protection to enhanced product aesthetics and performance improvements in a variety of applications.