What is the purpose of empty can test?

Empty can test (also called *can crushing test* or *ring pull test*) is a mechanical test performed on canned beverages to ascertain the integrity and strength of the beverage can's closure. The empty can test is typically carried out on random samples taken from a production line to maintain quality standards and ensure consumer safety.

The test involves applying a specific amount of force to a can's ring-pull tab or other opening mechanism. This force simulates the force that a consumer would apply when opening a can of beverage. The test is designed to determine whether the ring pull or opening mechanism can withstand the force without breaking or deforming.

The empty can test evaluates several aspects of the beverage can's closure, including:

- Tensile strength: The test measures how much force is required to separate the ring-pull tab from the can body. This indicates the strength of the tab and ensures it will not break when opened.

- Strength of the closing seam: The test assesses the strength of the seam that holds the can's two ends together. It ensures that the seam is secure and will not burst when the can is subjected to normal handling or transportation.

- Overall can integrity: The empty can test also identifies weaknesses or defects in the can's structure, such as punctures or cracks, that could compromise the can's integrity.

The empty can test is an essential quality control procedure for beverage manufacturers and can makers. It helps ensure that the cans meet the required strength standards, providing a safe and reliable product for consumers.