Currently, the cosmetic bottle caps on the market are mostly made of plastic and aluminum-plastic composite materials. In comparison, the aluminum-plastic composite material has better sealing and more beautiful caps, and is the preferred bottle cap material for many high-end cosmetics. The aluminum-plastic combination part of the aluminum-plastic composite bottle cap material will contact the liquid in the bottle, so aluminum foil is often used as the aluminum substrate for cosmetic bottle caps.

Aluminum foil materials for cosmetic bottle caps are usually used to improve the sealing, aesthetics and anti-counterfeiting effects of packaging. Aluminum foil has good barrier properties and can prevent moisture, oxygen and light from affecting cosmetic ingredients, maintaining the freshness and effectiveness of the product.

Aluminum foil materials used for cosmetic bottle caps need to have good ductility, strength and corrosion resistance. Common aluminum foil alloys mainly include:

8011 aluminum alloy:

This is one of the most widely used aluminum foil alloys. 8011 aluminum alloy has good strength, ductility and corrosion resistance, and is suitable for cosmetic bottle caps and other sealing materials. It can produce thin aluminum foil through calendering process, and has a good sealing effect in bottle cap materials.

1060 aluminum alloy:

1060 aluminum foil has good ductility and plasticity, is easy to process into various shapes, and has good corrosion resistance. It is often used in cosmetic bottle caps made of aluminum-plastic composite materials to provide a good sealing effect.

5657 aluminum alloy:

5657 aluminum alloy has excellent processing performance, corrosion resistance and beautiful appearance. It is easy to cut, stamp and bend, with a smooth surface and uniform color. Mainly used to make cosmetic aluminum caps.

Specifications:

Performance advantages of aluminum foil for cosmetic bottle caps:

1. Sealing: Aluminum foil is used inside the bottle cap to enhance the sealing of the bottle cap, prevent air and moisture, and extend the shelf life of cosmetics.

2. Anti-counterfeiting function: Aluminum foil with special printing or texture design can be used as an anti-counterfeiting mark to ensure the authenticity of the product.

3. Environmental protection and recyclability: Aluminum foil is recyclable, in line with environmental protection trends, and reduces the use of plastics.

4. Decorative: Enhance the visual beauty of the product, provide metallic luster, increase the sense of luxury and attractiveness.

5. Corrosion resistance: It can maintain its stable performance even in humid or corrosive environments.

6. Excellent processing performance: Aluminum foil can be easily processed into various shapes and sizes to meet the design requirements of different cosmetic bottle caps.

Surface quality requirements of aluminum foil:

The surface of the aluminum foil must be flat and smooth, without obvious dents, wrinkles, creases and other defects.

The surface of the aluminum foil must be free of oxidation spots, oil stains, water marks and other defects that affect the appearance.

The surface of the aluminum foil must have good coating adhesion to ensure that the coating or printing ink is not easy to fall off. Coating

The aluminum foil should have no obvious pinholes. Pinholes will affect the barrier properties of the aluminum foil and cause the sealing of the packaging to decrease.