Alu Foil For Flexible Packaging Lamination

Aluminum foil for flexible packaging lamination is a key material that is widely used in the packaging of food, pharmaceuticals and other products that need to be protected from moisture, oxidation and extended shelf life. Aluminum foil is one of the ideal packaging materials due to its excellent barrier properties.

Commonly used aluminum alloys for flexible packaging lamination aluminum foil include 1235-O, 8079-O, etc. These aluminium alloys have good ductility, corrosion resistance and excellent electrical conductivity, which provide a solid foundation for the lamination processing of aluminum foil. In terms of temper, the annealed O-state aluminum foil has ideal softness and plasticity, which facilitates lamination processing with plastic film, paper and other materials.

Thickness is another key parameter of aluminum foil for flexible packaging lamination. To meet different packaging needs, the thickness of aluminium flexible packaging foil usually varies between 0.006 and 0.2 mm. Thin and light aluminum foil (0.06 to 0.09 mm) is often used in the exquisite packaging of chocolate, candy and other desserts, which is both beautiful and economical; medium-thickness aluminum foil (0.1 to 0.12 mm) is widely used in the packaging of food and pharmaceuticals that require a certain degree of protection, effectively insulating air, moisture and light; and heavy aluminum foil (0.13 to 0.2 mm) has become the packaging of high-grade gifts and cosmetics due to its excellent resistance to compression, puncture resistance and other factors. It has become the preferred packaging material for high-grade gifts and cosmetics.

In practical applications, plain aluminum foil is usually used in combination with other materials to make up for its own shortcomings. For example:

– Aluminum foil/PE composite film: The polyethylene (PE) layer provides good heat sealing performance and enhances the overall mechanical strength.

– PET/aluminum foil/PE laminated film: the polyester (PET) layer increases puncture resistance and tensile strength, the aluminum foil layer in the middle is responsible for the barrier, and the PE in the innermost layer ensures the heat sealing effect.

Characteristics of aluminum foil for flexible packaging lamination are:

– Excellent barrier properties: Aluminum foil has a very high barrier to gases (e.g. oxygen, carbon dioxide), water vapor and light, which effectively protects the product from the external environment.

– Lightweight and flexible: despite being very thin, aluminum foil has good strength and flexibility, making it easy to process into a variety of shapes and adapt to the packaging needs of different products.

– Good heat sealing performance: Aluminum foil can be laminated with a variety of plastic films or other materials to form packaging materials with good heat sealing performance, ensuring the sealing and integrity of the package.

– Aesthetics: The surface of aluminum foil can be printed to provide an aesthetically pleasing design, which helps to enhance brand image and product attractiveness.

Application areas of aluminium foil for flexible packaging lamination including:

– Food Packaging: Used for packaging of coffee, tea, candy, snacks and other products that are susceptible to changes in air and humidity.

– Pharmaceutical packaging: to protect medicines from moisture and oxygen, and to maintain the stability of medicinal effects.

– Cosmetic and personal care packaging: to prevent product ingredients from deteriorating due to exposure to air.

Through multi-layer composite structure, the advantages of each material can be fully utilized to produce packaging materials with both excellent barrier properties and good mechanical properties. This composite material not only improves the preservation quality of the product, but also optimizes packaging efficiency and cost-effectiveness.