Aluminum Bottle Cap Material for Easy Tear Lid

Multiple applications of the aluminum easy tear lid

In canned food packaging, aluminum easy-tear lids effectively block oxygen and moisture with excellent sealing properties, extending the shelf life of canned meat, fruits and vegetables. In snack food packaging, aluminum easy-tear lids are widely used in milk powder cans, nut cans, etc. Their moisture-proof properties protect the flavor of food, and the tear-off design meets consumers' needs for convenience.

Aluminum tear-off caps are particularly widely used on carbonated beverage bottle caps. Faced with the high-pressure environment of carbonated beverages, the strength and corrosion resistance of aluminum caps ensure the safety of packaging.

At the same time, its lightweight characteristics reduce the overall weight of beverage bottles and save transportation costs. In the packaging of functional beverages and sports drinks, the one-handed opening design of the tear-off cap meets the consumer's use needs in sports scenes and becomes a key factor in improving user experience.

In the pharmaceutical field, aluminum easy-tear caps are mainly used in packaging such as oral liquid bottles and health care product bottles. For drugs that are sensitive to humidity and light, the high barrier properties of aluminum caps provide a stable storage environment.

The core aluminum alloy for easy-tear cap manufacturing

3003 aluminum sheet

3003 alloy is a representative of aluminum-manganese alloys, with a manganese content of about 1.0%-1.5%, and has good formability and corrosion resistance. In the manufacture of easy-tear caps, its advantages are mainly reflected in: good deep drawing performance makes it suitable for processing into various complex shapes of caps. It is commonly used in beverages, cans and other packaging that have certain requirements for appearance. However, the strength of this alloy is relatively low, and it is usually necessary to combine it with other processes in the packaging of carbonated beverages that need to withstand high pressure.

5052 aluminum sheet

5052 alloy belongs to aluminum-magnesium alloy, with a magnesium content of 2.2%-2.8%. It is a medium-strength heat-treatable strengthening alloy. Its outstanding features are: high tensile strength and yield strength, which enable it to withstand large internal pressure, and is particularly suitable for packaging scenarios that require high sealing, such as carbonated beverages, high-pressure cans, etc.

Excellent seawater corrosion resistance makes it more advantageous in product packaging stored in coastal areas or humid environments, such as seafood canned packaging.

8011 Alloy

Aluminum foil alloy 8011 is an aluminum-silicon alloy with a silicon content of 0.5%-0.9%. It is a transitional material between industrial pure aluminum and alloy aluminum. Good processing performance makes it suitable for high-speed stamping and forming, which can greatly improve production efficiency and reduce processing costs.

Moderate strength and corrosion resistance meet the packaging needs of most common foods and daily necessities, such as condiment bottles, honey jars, etc. However, due to its low strength, it is not suitable for scenes with high pressure or high sealing requirements.

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