The can industry is a multi-billion-dollar industry that continues to shape the daily lives of people. Over the years, more and more quantities and varieties of canned goods have become available.
Can sealers revolutionized the process of canning and the industry experienced rapid growth. Gone are the days of laboriously bending metal and soldering seams by hand. This increase in production promoted the use of cans in the following industries:
With can sealers at the center of this rapid growth, let’s take a closer look at what a can sealer is and how it functions.
A can sealer is a machine that seals the can lid to the can body in a way that is completely airtight. The lid of the can is usually made of tin-plated steel. The material for the body depends on the product being canned. It can be made of metal, paperboard, or plastic.
The can sealer interlocks the outer end of the lid with the top part of the can body. This process is called double seaming. The double seam creates a strong mechanical joint to seal the product inside the can. In addition to the mechanical interlocking, a sealing compound is attached to the curl of the lid. This makes the seal not only strong but also airtight.
If you’re looking for can sealers for sale, it’s important for you to understand the different components, operations, and designs of can sealers. This greater understanding of how can sealers function will help you choose the type of can sealer that best fits your needs.
Firstly, you need to know the components of a can sealer before learning how it seals aluminum cans. A can sealer has the following major components to form the airtight closure between the lid and body of the can:
The seamer head holds the lid and supports it as it goes through the rollers.
The seamer turntable is a disc or plate that holds and supports the can body while it is being sealed to the lid.
A can sealer has at least one set of rollers, depending on the production volume. The first roller folds the lid’s curl towards the top of the body. The second roller irons the seam to tighten it. This compression causes the sealing compound to flow and fill any little open spaces that remain. The sealing compound creates an airtight seal that protects the product inside the can from leaks and contaminations.
The sealing process takes place in the sealing chamber of the machine.
There are can sealers that remove oxygen inside the can using vacuum pressure. This takes place in the vacuum room.
Can sealers have the following operation classifications:
Automatic can sealers are fully automated. This type of can sealer does not require any human interaction in the entire sealing process.
On the other hand, semi-automatic can sealers need manual input from people in order to operate.
A contact operation means that the machine comes into contact with the cans to create the double seam.
In non-contact operations, on the other hand, the machine does not come into contact with the cans. It only uses heat to bond an aluminum foil and seal the can. Instead of making a double seam, induction sealing is used.
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There are two can sealing machine designs depending on the sealing method used:
With a rotary can seamer design, the can spins during the sealing process. Automatic can sealers usually have this design. This is commonly used for high volume productions in big operations.
In contrast, non-rotary sealers keep the can still. Semi-automatic can sealers usually have this design. Machines meant for the home market are based on this sealing method. This design is ideal for preventing spillage when sealing liquid products.
The main purpose of using can sealers is to improve efficiency, increase production, and reduce operation costs. If you are looking for ways to experience growth in your business, you should consider getting a high-quality can sealer that will provide solutions to your can packaging needs. Can sealers fall under different operation classifications or use different sealing methods. Now that you have a better understanding of what can sealers are and how they function, you can start simplifying your canning process with the help of LPE products.