Can Sealing Machine For Efficient Packaging

LevaPack offers wide variety of high-quality can sealer/sealing machines and tin can closing machines at the best price for better can packaging solutions to enhance efficiency. Durable Semi-automatic and full auto vacuum seamer machines are manufactured for cans in various industries.

Can Sealing Machines

LPE Can Sealing / Closing Machines

For the food and beverage business to generate higher profits through an automatic canning system, they need to buy the newest technology. LPE, a manufacturer and supplier of can packaging machines in China, has top-notch can sealer machines what you need.

You can choose from our following various for sale sealing machines for round cans in your productions:

  • Auto and semi-auto vacuum sealing machines
  • Servo fixed speed sealing machine
  • Semi-auto can seamer for small production
  • High volume fully automatic seamer
  • Aluminum foil induction sealing machine
Semi Auto Can Seaming Machine

We also support can sealer machine troubleshooting, spare parts supply, training, and any other technical services you need. Our experts are professional in the field. You can also check out our guide to can seamer machine to learn more about can sealing.

What is a Can Sealing Machine?

A can sealing machine is also known as a can seaming/closing or a can sealer/seamer/closer machine. It is used to hermetically seal the lid to the body of paper cans, aluminum cans, tin cans, PET cans, glass cans, plastic cans, pots, jars, and others. The can lid is usually made of tin-plated steel while the can’s body can be:

  • Metal (such as food and beverage cans)
  • Paperboard (popcorn cans)
  • Plastic

Can seamers could be assembled on an automatic packaging line or used alone. They are very common in the food industries and other product varieties.

Fully Auto Nitrogen Filling Vacuum Sealing Machine

Can Sealer / Closer Machine Classification

The mechanical composition and design of can seamers vary depending on the type and number of cans (usually steel or aluminum) being sealed per unit time. They can either have automatic or semi-automatic and contact or non-contact (with respect to the can being sealed) operation.

Automatic Can Sealers

Automatic can sealing machines are fully automated and does not need any human interaction during the sealing process.

Semi-Automatic Can Seamers

Semi-automatic can sealer/sealing machines, on the other hand, require some manual help for the operation.

Contact Can Sealing Operation

Can sealers that do double seaming (such as nitrogen gas flushing vacuum seamers) come into contact with the can. Double seaming is the process of connecting the can’s lid to its body.

Non-Contact Can Sealing Operation

Contrastingly, induction cap sealers do not come into contact with the cans. This is because induction sealing only uses heat to bond an aluminum foil to the can to seal the can’s opening.

Can Sealer Parts and Function

Can seamer machine have the following major components:

#1 Seamer Chuck/Head

The seamer head holds the can’s top or lid tightly and serves as a support material from the rollers’ pressure. The dimensions of the chuck depend on the diameter of the round can/tin can/jar being sealed. An appropriate chuck should be installed for different can diameters.

#2 Seamer Turntable (Base Plate)

The spring-loaded seamer turntable is a disc that spins freely and gives support to the body of the can being sealed.

Aluminum Foil Induction Sealing Machine for Screw Cap
#3 Seaming Rollers

Can sealing machines normally have one set of seaming rollers but some can seamer machines used for high volume production have more. The first roller interconnects the can’s lid to its body while the second one tightens the seam and irons it out.

#4 Sealing Chamber

The sealing chamber is where the sealing process of the can takes place.

#5 Vacuum Room

Vacuum can sealing machines have a vacuum room where the oxygen is removed from the can under vacuum pressure.

How Can Sealing Machines Work

Can Sealing Machine Designs

Can sealing machines work depending on the sealing machine design – rotary or non-rotary.

Rotary Machine Design

In rotary seamers, the can spins while the seamer does the sealing process. Automatic can seamers typically have rotary machine designs and are usually used in big operations in industries. LPE’s Fully Auto Nitrogen Filling Vacuum Sealing Machines and High Volume Fully Auto Round Can Sealing Machines have rotary machine designs.

Non-Rotary Machine Design

Non-rotary seamers keep the can stationary and only the seamer spins. This avoids damages to the can being sealed especially to the product inside it. These are ideal for products that contain any kind of liquid to prevent spilling. Semi-automatic seamers have normally non-rotary machine designs and are meant for the home market. LPE’s Semi-Auto Vacuum And Gas Nitrogen Flushing Round Can Sealing Machine, Semi-Auto Can Seamer, and Servo Fixed Speed Sealing Machine have non-rotary machine designs.

Closeup of Rotary Machine
Non-Rotary Machine

The Can Sealing Process

When you buy a can body, the flange in it is noticeable and its end has a curl. Once the can goes in the seamer, the can is lifted up and the lid is attached to the can’s top by the seaming chuck. The can enters the seamer either through a conveyor if it is automatic or by manually putting it on the sealing chamber if its semi-automatic.

After the can is lifted up, it undergoes three operation stages in the can sealing process: compression, first roller operation stage, and second roller operation stage.

Stage 1. Compression

The compression stage provides the force necessary to hold the can being sealed against the seamer chuck. It feeds the can body flange towards the first roller. The chuck holds and keeps the lid to be attached to the can in place while the seamer turntable moves the can upwards against the chuck.

For vacuum can sealing machines, the oxygen inside the can is removed (vacuumed) first and then nitrogen gas is flushed into it before the sealing process is resumed. After which the lid is placed into the top of the can.

Next, the can with the lid undergoes the folding process known as double seaming. The seam is made by interlocking the lid’s “curl” (outside end of the lid) with the “flange” (the can body’s top part). This is accomplished in two roller operation stages.

Semi Auto Can Seaming Machine
Stage 2. First Roller Operation

The first roller operation stage is the most critical one as it affects the seam’s integrity. A successful first roller operation stage ensures that tightness issues (or wrinkles) and leaks are avoided. In this stage, the first seamer roller comes in to fold the lid’s curl towards the can’s flange. The first roller stage must not be too tight or too loose as this cannot be corrected later.

First, the lid’s curl (which is wider than the can’s flange) is pushed by the first roller and turns around first. Next, the can’s flange follows while the roller advances closer to the chuck. Lastly, the lid interlocks with the body of the can but is not sealed hermetically yet.

Closeup of levapack can sealing machine
Stage 3. Second Roller Operation

After the first roller operation stage, the lid and the can body are now loosely held in place and “hooks” is formed. The hooks’ parameters are considered and monitored in checking the seam’s integrity under various conditions.

In the second roller operation stage, the loose seam is ironed out by a second roller to ensure that the sealing is made tight. It compresses the interlocked hooks of the lid and the flange of the can body. Then a sealing substance is squeezed into the remaining open spaces which completes the hermetic seal. The sealing substance ensures that the product inside the can is protected from leaks and contaminants by guaranteeing a tight seam seal. You can also learn how aluminum cans are sealed in this guide with a video.

The double seam’s shape is dependent on the first and second rollers’ shape along with:

  • The rollers’ relative distances and positions
  • Lifter height
  • Lifter pressure
Screen of a can seaming machine

How Induction Sealing Machines Work

Another type of can sealing machines is induction seamers that are used to seal containers, jars, or cans having screw caps and aluminum foil inside. The induction sealing process is done after the containers are filled and capped.

The induction sealing machine’s head contains a coiled conductor and generates an electromagnetic current when a power supply energizes it. The capped containers pass under this electromagnetic current through a conveyor. The inner seal’s foil produces electrical resistance which heats the foil and in turn dissolves the inner seal’s polymer coating.

The heat from the foil along with the cap pressure makes the inner seal bond with the container’s lip resulting in a hermetic seal. Our Aluminum Foil Induction Sealing Machine for Screw Cap works the same way.


#1 Error Detection Feature

LPE uses servo motors to control the can sealing machine turntables which automatically stops when an error is detected, ensuring a safe and stable operation. You can restart the machine after an error through a simple tap on the screen (error reset and origin option). This saves a lot of maintenance activities and time.

#2 Quality Raw Materials

To ensure the overall quality of the can sealing machines, LPE partners with world-renowned brands to source the raw materials. We use premium #304 or #316 stainless steel and other durable raw materials from Omron, Mitsubishi, DELTA, SEW, SMC and Schneider.

#3 Strict Manufacturing Quality Control

LPE enforces strict quality control throughout the whole can seamer manufacturing process:

  • A thorough inspection of machine parts to make them as precise as possible.
  • Rigorous hand assembly of the machine parts by professional engineers with years of experience.
  • Inspection of the assembled seamer machine to ensure that mechanical parts are correctly installed for a smooth seamer operation.
  • Strict after-production test using sample cans for over 100 consecutive operations followed by a no-load run test for 24 hours.
  • Final polishing through cleaning remaining debris/stains on the machine and application of anti-rust oil to enhance durability.

Can Sealing Machine Cost

At Levapack, we feature can-sealing machines that are manufactured to your desired specifications. We strive to work closely with all our customers to ensure that they are satisfied with our products. Our can sealing machine factory is adequately equipped to offer great quality on all products we manufacture for our customers. This has allowed us to offer competitive prices in the market making our products extremely affordable. Our expertise and well-managed manufacturing processes come in handy to ensure that we provide quality. We feature different can/tin/jar packaging machines like tin can sealers for sale and other quality machines you can invest in.


As the requirements of various industries grow higher, LPE’s response is to offer a wide range of customizable can sealing machines to meet the market’s demands. LPE’s can seamers are suitable for sealing aluminum, steel, plastic, tin, paper, glass, PET, and plastic cans among other container types.

LPE understands the challenges that every industry faces may it be in the food, beverage, pharmaceutical, and chemical industry. The integrity of double seaming is critical to ensure that no leaks (especially when dangerous liquids are canned) and contamination of the product inside will happen. For beverage can seaming and liquid sealing solution, you can learn more in this beginners’ guide to liquid packaging. At LPE, we make sure that all your requirements are met through our expertise.

Two plastic cans packed with dry flower

Listed below are the various industries where you can use LPE’s can seamers.

Beverage Industry
Canned beer sealing
, Soda sealing, Cider, Water, Juice, Coffee and Tea, Wine, Carbonated Beverages
Food Industry Tuna, Jam, Sauce, Cannabis, Nutrition Powder, Honey, Dry Food (such as nuts, cereals, rice, etc), Soup, Vegetables, Fruits, Meat, Seafood
Pharmaceutical Industry Pharmaceutical raw materials, Powders, Hand sanitizer, Pills, Medical supplies, Veterinary supplies
Chemical Industry Automotive Fluids (petrol, oil, and diesel), Nuclear waste and radioactive substances, Ink and lacquers, Farm chemicals, Cleaning liquid, Paint, Lube oil, Glue, Cooking oil

Customizing Your Can Sealing Machine

At LPE, our engineers will be working and consulting closely with you for the customization of the ideal packaging solution for your business also including
can filling machines
, can capping machines and labeling machines. We help you understand and determine the following factors before we start manufacturing your can seamers:

  • The materials you intend to pack
  • Your machine type needs whether it is single or multiple lines of machines
  • Your product yield demand
  • Your plant’s size and layout
  • Other special requirements such as vacuum packing

For the manufacturing of your customized can seamer, below are the following machine components that you can customize:

#1 The Seamer Mould

You can customize the seamer mould based on your can size with dimensions Diameter x Height. This includes the seaming chuck, turntable, and lid feeder.

#2 The Seaming Rolls

Customize your seaming machine’s rollers according to your package material such as:

  • Tin can
  • PET can
  • Aluminum can
  • Paper tube
#3 The Brand of the Seamer’s Electrical Parts

Choose the brand for your can sealing machine’s electrical parts as per your special requirements.

#4 The Seamer Machine’s Size

Small or big factory space, we can tailor your seaming machines for you to suit your factory’s available space.

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