Aluminum Plastic Film is a high-performance composite packaging material, typically made by high-precision dry lamination or extrusion lamination processes using plastic films such as PET, PA, CPP, or PE with aluminum foil layers. Its structure is generally PET/AL/PE or PA/AL/CPP, combining the flexibility of plastic film with the high barrier properties of aluminum foil. The material has a smooth surface, good printability and heat-sealing performance, and can be processed into roll form for easy automated filling and sealing operations. Standard thicknesses range from 60μm to 150μm, and multi-layer structures or special properties, such as antistatic layers and high-temperature resistant layers, can be customized according to customer needs. It is widely used in the modern flexible packaging industry, effectively extending the shelf life of contents and improving the overall quality and protective performance of packaging.

1. High Barrier Properties:

The core advantage of this aluminum plastic film lies in the high density of its aluminum layer. After vacuum metallization or aluminum foil lamination, its oxygen translucency (OTR) can be as low as below 0.5 cm³/m²·24h, and its water vapor translucency (WVTR) is below 0.3 g/m²·24h, meeting GB/T 1038 and GB/T 1037 standards. It effectively prevents oxygen, water vapor, and odor molecules from entering the packaging, keeping the contents dry and fresh, making it particularly suitable for products with extremely sensitive humidity.

2. Superior Mechanical Properties:

Using a high-strength PET or PA layer as the supporting substrate, it possesses excellent tensile strength and tear resistance. Longitudinal tensile strength ≥70MPa, transverse tensile strength ≥60MPa, and tear strength ≥15N/mm, far exceeding that of ordinary single-layer films. Even during high-speed packaging machine operation or long-distance transportation, it can prevent bag breakage, perforation, and delamination. Suitable for winding, die-cutting, and vacuum sealing processes, it is particularly stable and reliable for large-scale mass production.

3. Stable Heat-Sealing Performance:

The inner layer of Aluminum Plastic Film is made of CPP or low-density polyethylene (LDPE), offering excellent heat-sealing adaptability. It has a wide sealing temperature range (110℃ to 160℃), a heat-sealing strength ≥40N/15mm, and a strong, leak-proof seal. The smooth sealing edges and good flexibility allow for sealing in vertical, horizontal, and vacuum packaging machines, making it particularly suitable for high-speed automated production lines in the food and pharmaceutical industries, ensuring complete packaging seals.

4. Excellent Printing and Appearance Effects:

The outer PET or BOPP layer has high surface tension (≥38 dyn/cm), allowing for clear gravure or offset printing patterns after corona or plasma treatment. Its surface is highly smooth, with uniform reflectivity, and can present a metallic or matte finish. High color fidelity and good abrasion resistance result in a more visually appealing finished product. For brand packaging, aluminum-plastic film enables clear and layered visual displays of graphics and text, helping to enhance brand recognition.

5. Temperature and Chemical Stability:

Aluminum Plastic Film can withstand temperature changes from -40℃ to 120℃ without cracking, delamination, or shrinkage. It exhibits good resistance to alcohol, acids, alkalis, and many organic solvents. Some structures can meet the requirements for use under high-temperature retorting conditions (121℃/30min), making them suitable for food sterilization packaging; simultaneously, they can resist ultraviolet radiation, preventing product deterioration or performance degradation due to light exposure.

1. Food Packaging:

Widely used in packaging coffee powder, milk powder, seasonings, instant beverages, nuts and dried fruits, pet food, etc. Its high-barrier structure effectively isolates air and moisture, preventing oil oxidation and aroma evaporation. The light-blocking properties of the aluminum layer protect food from UV damage, thus extending shelf life. Complies with GB 9685 and FDA food contact standards, is safe and odorless, and suitable for the international food packaging market.

2. Pharmaceutical and Health Product Packaging:

Aluminum plastic film is commonly used for packaging pharmaceutical granules, tablets, powders, and nutrient bags. Its excellent sealing properties prevent moisture, oxygen, and UV damage, ensuring stable efficacy. Especially in PTP blister packaging or outer bags, it has excellent tear resistance and hygiene safety, meeting GMP clean packaging standards. Some products can also be customized with anti-counterfeiting printing or laser marking layers to prevent counterfeiting.

3. Industrial and Chemical Packaging:

Widely used for the sealed packaging of chemical auxiliaries, coating powders, electronic materials, and special lubricants. Its corrosion resistance protects against organic solvent vapors and acid/alkali components, preventing material deterioration or clumping. The structure can be designed according to different chemical properties, such as multi-layer combinations like PA/AL/PE or PET/AL/NY/CPP, ensuring both physical strength and impermeability and moisture resistance, guaranteeing safe and reliable transportation and storage.

4. Electronics and New Energy Fields:

Widely used in packaging for battery cells, chips, sensors, circuit boards, and anti-static components. The aluminum layer has excellent electromagnetic shielding properties, reducing electrostatic interference and moisture intrusion, protecting high-precision electronic components. Some high-barrier film structures can also be used in lithium battery pouch cells, possessing extremely low gas permeability and high insulation, making them an important material in the new energy battery industry.