A seamer machine, also known as a can seamer or can seaming machine, is a type of machine used to seal the lids onto cans, creating a hermetically sealed container. This process is commonly used in the food and beverage industry to preserve products and ensure their freshness and safety.
The seaming process typically involves placing a lid on top of a can and using the machine to fold and crimp the edges of the lid and can together, creating an airtight seal. This seal is important for preserving the contents of the can, as it prevents air, moisture, and contaminants from entering the container.
Seamer machines can vary in size and complexity, ranging from manual or semi-automatic machines for smaller production lines to fully automatic machines for large-scale production. Some machines can also handle different sizes and types of cans and lids, offering versatility for various products.
Seaming Forms
There are different forms of seaming used to meet various product and packaging needs. These forms include:
Normal seaming: This is the most common form of seaming, also known as regular seaming. It involves placing a lid on top of a can and using the seamer machine to fold and crimp the edges of the lid and can together, creating a hermetic seal. This process does not involve any additional atmosphere control.
Negative pressure seaming: In this process, the air inside the can is evacuated, creating a slight negative pressure before the lid is sealed onto the can. This is useful for products that benefit from a vacuum-sealed environment, such as preventing oxidation or spoilage.
Vacuum and nitrogen-flushing seaming: This form of seaming starts with evacuating the air inside the can, similar to negative pressure seaming. However, instead of leaving the can under a vacuum, nitrogen gas is flushed into the can before sealing. This helps to displace oxygen, extending shelf life and preserving the quality of the product.
These different seaming methods are chosen based on the requirements of the product being packaged and the desired level of preservation and protection.