The main differences between ordinary aluminum-plated film and aluminum-plated film with primer are as follows:

The main differences between ordinary aluminum-plated film and aluminum-plated film with primer are as follows:

Surface properties

• Ordinary aluminum-plated film: The surface is relatively smooth, the aluminum layer is directly exposed, the affinity with other materials is poor, and the surface energy is relatively low.

• Aluminum-plated film with primer: Due to the presence of primer, the surface roughness and surface energy are improved, which can better combine with other substances, providing a better foundation for subsequent printing, lamination and other processing.

Adhesion

• Ordinary aluminum-plated film: The aluminum layer and the substrate are mainly physically attached. When affected by external forces or environmental factors, the aluminum layer is prone to shedding and peeling.

• Aluminum-plated film with primer: The primer acts as a bridge between the aluminum layer and the substrate. Through chemical bonding or physical adsorption, it greatly improves the adhesion between the aluminum layer and the substrate, making the aluminum film more durable.

Printing performance

• Ordinary aluminized film: When printing directly on its surface, the ink adhesion is poor, and the printed pattern is prone to blurring and fading, which requires high printing technology and ink.

• Primer-coated aluminized film: The primer can improve the printability of the surface, so that the ink can better adhere to the aluminized film, the printed pattern is clearer, firmer, and colorful, and can withstand certain friction and scratches.

Chemical resistance

• Ordinary aluminized film: The aluminum layer is easily corroded by some chemicals. When it comes into contact with acids, alkalis, organic solvents, etc., chemical reactions may occur, causing damage to the aluminum layer and affecting the performance of the aluminized film.

• Primer-coated aluminized film: The primer can provide a protective barrier for the aluminum layer, enhance the chemical resistance of the aluminized film, and make it more stable in different chemical environments.

Cost

• Ordinary aluminized film: The production process is relatively simple, no additional primer step is required, and the cost is low.

• Primer-coated aluminized film: The process and material cost of primer coating are increased, and its price is usually higher than that of ordinary aluminized film.

There are the following differences in the application of ordinary aluminized film and primer-coated aluminized film:

Packaging field

• Ordinary aluminized film: It is often used for ordinary product packaging that does not require high barrier properties and appearance, and does not require subsequent complex processing, such as some cheap food inner packaging, small hardware packaging, etc.

• Primer-coated aluminized film: It is widely used in product packaging that requires high packaging appearance, printing effect and product shelf life, such as packaging of high-end food, medicine, cosmetics, etc. For example, chocolate packaging, primer-coated aluminized film can make the packaging printing exquisite, and can well block external water vapor and oxygen, extending the shelf life of chocolate.

Printing field

• Ordinary aluminized film: It is rarely used directly for high-precision, high-quality printing products, and is generally used in simple warning signs, temporary labels and other fields with low requirements for printing quality.

• Primer-coated aluminized film: It is the first choice for the printing industry. It can be used to make exquisite posters, brochures, high-end gift boxes, etc. It can present clear, bright and firm printed patterns and meet various complex design and printing process requirements.

Composite field

• Ordinary aluminized film: It is used in some simple composite materials with low composite strength requirements, such as composite with ordinary plastic film for some general moisture-proof and light-shielding products.

• Primer-coated aluminized film: It is widely used in fields with high composite fastness requirements, such as composite with paper to make high-end cardboard, and composite with plastic film to produce various high-performance packaging materials, which can ensure that the composite layer will not easily separate during subsequent processing and use.

Electronic field

• Ordinary aluminized film: It can be used for simple packaging or auxiliary shielding of some electronic products with low electromagnetic shielding requirements and cost sensitivity.

• Primer-coated aluminized film: It is more widely used in electromagnetic shielding, insulation and other aspects of electronic equipment. Due to its good adhesion and stability, it can maintain performance in long-term use and ensure the normal operation and safety of electronic equipment.