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Packaging aluminum foil usually refers to a thin sheet made of aluminum with a purity of more than 99% after rolling. It has good flexibility, barrier and light-shielding properties, and can effectively protect the packaged items from the influence of oxygen, water vapor, light and microorganisms, thereby extending the shelf life and shelf life of the product.

Packaging aluminum foil is a packaging material widely used in many fields such as food, medicine, cosmetics, electronics, etc.

The alloy numbers of packaging aluminum foil mainly include ‌1 series, 3 series and 8 series products‌. Specifically, the commonly used models are 1050, 1060, 1100, 1235, 3003, 8011, 8021, 8079, etc. These alloy states are more commonly used in the three states of H14, H16, and H18. The thickness is usually between 0.006-0.2 mm.

Features of aluminum foil rolls:

1. Excellent barrier properties: effectively prevent oxygen, water vapor and odor, keep food fresh, suitable for packaging such as tea.
2. Good light-shielding property: It can block ultraviolet and visible light, and protect the quality of light-sensitive products (such as medicines, cosmetics and oily foods).
3. High temperature stability: It is resistant to high temperatures, suitable for steaming and baking packaging, and will not deform or release harmful substances.
4. Good mechanical properties: It has good strength and flexibility, is easy to process, and can be made into packaging materials of various shapes and sizes.
5. Hygiene and safety: It is non-toxic and odorless, meets hygiene standards, will not pollute packaged products, and protects the health of consumers.
6. Recyclability: Aluminum foil materials have a high recycling value, meet environmental protection requirements, and help promote sustainable development.

Common application areas

1. Food packaging: widely used in the packaging of various foods, such as chocolate, candy, chewing gum, dairy products, meat products, convenience foods, baked goods, tea, coffee, etc. For example, chocolate is usually packaged in a composite form of aluminum foil and paper or plastic, which can not only show the appearance of the product, but also prevent the chocolate from melting and oxidation; meat products can be packaged in aluminum foil to maintain the freshness and color of the meat and extend the shelf life.
2. Pharmaceutical packaging: used for blister packaging of medicines, aluminum-plastic composite packaging of tablets and capsules, etc., which can protect the medicines from moisture, light and oxidation, ensure the stability of the efficacy and quality of the medicines, and facilitate the storage, distribution and use of medicines, and improve the safety and convenience of medicine packaging.
3. Cosmetic packaging: Many cosmetics such as creams, lotions, lipsticks, eye shadows and other products are packaged in aluminum foil tubes or aluminum foil cartons, which can not only prevent the active ingredients in cosmetics from volatilizing and deteriorating, but also enhance the appearance, texture and grade of the products, and attract consumers' desire to buy.
4. Packaging of electronic and electrical products: In the packaging of electronic components, precision instruments, batteries and other products, aluminum foil can play the role of anti-static and electromagnetic interference shielding, protect the performance and stability of electronic equipment, and also has certain moisture-proof and rust-proof functions to prevent products from being damaged during transportation and storage.
5. Tobacco packaging: Commonly used for cigarette packaging, aluminum foil can maintain the humidity and aroma of tobacco, prevent tobacco from getting damp and moldy and losing its fragrance, and also has certain anti-counterfeiting functions. Through special printing and processing technology, the packaging is made more exquisite and unique.

Packaging aluminum foil production process

10 Melting and casting: Heating and melting aluminum ingots, continuously casting and rolling them into aluminum slabs through a casting and rolling machine, which determines the material quality and initial thickness of the aluminum foil.
2. Cold rolling: Further cold rolling of aluminum slabs to reduce them to the required thickness, improve strength, hardness and mechanical properties.
3. Foil rolling: Finely rolling to extremely thin aluminum foil (0.006 - 0.2 mm) on a foil rolling mill requires high equipment precision and good rolling technology.
4. Slitting and packaging: Slitting aluminum foil rolls according to demand, packaging for storage and transportation, and for use by downstream processing companies.