Can Sealing Machine: The Complete FAQ Guide In 2023

Human civilization, over the centuries have come up with various ways to preserve their food. These ancient methods include adding salt to their food, fermenting, smoking, drying or converting them into pickled form which were then stored in natural refrigerators like streams or underground pits.


In the modern era, with the help of latest technologies, human beings have come up with modern techniques to store their food. One of these techniques include the introduction of can sealing machine. This machine not only helps to preserve food items but also various other products.

Let us discuss in detail why can sealing machine is one of the best machines out there to preserve your food and other products for longer period of time in a safe and secure way.

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    1. What Is Can Sealing Machine?


    Can sealing machine, as the name suggests is used to seal cans and tins, these cans are used to store a number of products which include food items like meat, fish, chicken, vegetables, fruits and other manufactured goods like medicines and chemicals.

    This machine offers a safe and hygienic packaging for these products which have to go through the journey of getting manufactured in factories, moving to warehouses and finally shipping to different parts of the world for sale.

    For this purpose, a can sealing machine easily seals them in cans and tins. They are available in various types which gives the customer different options to choose from, suitable to his requirements.

    2. What Are the Advantages of Can Sealing Machines?

    Can sealing machine offers huge benefits to customers who want to install it in their production line? Due to its unique features, it has multiple advantages. Let us discuss each of these below.

    • Protection


    The main purpose of this machine is to provide strong and durable seal to the can to protect it from the external environment.

    Since the seal is airtight, it is extremely difficult to open the can unless a really strong force is applied to open it. This prevents the contents inside from interacting with light, moisture and air, thus reaching safely to its final destination.

    • Cost Effective


    Since this machine prevents the cans from getting damaged during the shipping process, it prevents the industries from bearing any losses, thus making it cost effective.

    • Ability to Seal High Volume Products


    This machine has an automatic type that can easily seal thousands of products in a single day. Thus it can be used in large-scale industries where there is a high demand to seal high-volume goods.

    • Versatility


    This machine is highly flexible since it can seal cans of any shape and size. Thus it can be used in a number of industries for a variety of products.

    • Easy to Use


    This machine doesn’t require a highly specialized worker to operate. Thus it can be easily monitored.

    • Environmental Friendly


    As compared to the other machines, the Can sealing machine doesn’t pose any harmful effects on the environment. This factor makes it an attractive feature for those customers who are conscious of the environment.

    3.What Are the Applications of Can Sealing Machine?

    Due to its versatility, this machine can be used in various industries like pharmaceutical, chemical, food, agriculture etc. let us discuss each of these industries below.

    • Pharmaceutical Industry


    This industry deals with the production of medicines and drugs which are used to cure diseases and improve people’s lifestyle. Since these medicines are highly vulnerable to dust, moisture, air and light, they need extra protection to prevent their interaction from any of these factors.

    The use of this machine will provide a strong protection to these drugs, preventing them from degrading and maintaining their efficacy.

    • Chemical Industry


    Chemical industry makes a variety of chemicals like paints, solvents and other chemical products. A lot of these products are then used in other industries as raw materials. These products are highly sensitive to oxygen or moisture, some of them are volatile and would evaporate if they come into contact with air.

    To prevent the chemical degradation of these products, the use of can sealing machine to seal them off in a can would be the best option.

    • Food Industry


    This industry is responsible for making a variety of food items like meat, chicken, seafood, soda drinks and other beverages. These products have an expiry date and would become inedible if dust or other pollutants interact with them.

    Can sealing machine can easily provide a strong and durable seal to protect the food contents from getting worse, thus preserving their freshness.

    • Agriculture Industry


    This industry produces products that come from the soil. These products include wheat, barley, rice and even chemical fertilizers which help to increase crop yield.

    The use of this machine will provide these products an airtight seal to protect them from getting damaged during transportation.

    • Cosmetic Industry


    Beauty products such as shampoo, creams, serums and moisturizers are becoming increasingly popular over the past few decades. Their demand has been rising sharply.

    As a result, cosmetic industries need a machine that would seal these products in containers to protect them, ensuring their safe transportation to their respective destinations.

    Moreover, this machine should be able to seal thousands of products in single day in order to meet the high demand of these beauty products. Can sealing machine can easily cater to these requirements.

    4.What Are the Working Principles of Can Sealing Machine?


    Even though, can sealing machine has various types, the working principle of all these is generally the same.

    The can is brought to the machine where the sealing process will take place. Pressure is applied to the body of the can which is then moved to the seamer base plate. Here, the seamer head orients the lid over the mouth of the can.

    As soon as the lid comes aligns with the body of the can, the first roller attaches the flange of the lid on the sides of the can. The roller keeps on applying force on the lid till it curves nicely around the can, forming the first hook.

    Next, the second roller forms a second sealing layer by applying considerable amount of pressure to push the two edges toward each other. As a result, a hermetic seal is formed which cannot be opened unless a powerful force is applied to open it.

    This is how the sealing process of the can takes place, after which, the cans can easily be shipped for sale.

    5. What Are the Components of Can Sealing Machine?


    This machine has various components which have their own specific function. Let us take a look at each of these parts.

    Seamer head (Chuck): this is one of the main parts which is responsible for holding the can when it is being sealed during the double sealing process. It also protects the cans and tins from the pressure of seaming rollers which would form dents on them if not monitored. Seamer head is also known as chuck.

    Sealing chamber: this is the main room where the can is placed inside and all the oxygen is sucked out to form a vacuum like environment inside the chamber. After that, the can is sealed by closing it with a lid.

    Seaming rollers: can sealing machines are provided with two concave shaped seaming rollers.

    One of the rollers is responsible for handling the body of the tin or can whilst the other roller is responsible for handling the lid. The setting up of these rollers is technical and would require a trained worker who would be able to set them up correctly.

    Seamer base plate:this holding base for the can provides support to the can when it is being closed with a lid.

    Conveyor belt: this belt runs automatically and is responsible for transporting the cans from one part of the machine to the other.

    Ejector: this part, as the name suggests is used to eject the filled cans to the other part of the production line after the sealing process has been done. It also helps in placing the lid on top of the can or lid. It is shaped like a rod which has a small disc situated at one of its end.

    This disc comes from the chuck. The speed at which the ejection process takes place needs to be carefully monitored since it can damage the cans if not ejected properly.

    Feeder caps: these caps are responsible for supplying the lids to the can sealing machine where they can be used to seal the tins. They work automatically by picking up the lids from their respective place and transporting them to the machine where they are used for sealing purposes.

    Electrical component: this usually contains an electric box which consists of all the electrical components needed to operate the machine.

    Touch screen: touch screen consists of all the parameters of this process which can be monitored. This screen is monitored by an operator who makes adjustment to the sealing process as required.

    6.What Are the Types of Can Sealing Machine?

    There are several types of this machine. Each have their own unique features, advantages and disadvantages.

    Can sealing machine are broadly classified into two groups:

    • Based On Automation

    Based on automation, this machine is divided into

    Automatic Can Sealing Machine

    Automatic Can-Sealing-Machine

    This type of machine is used to make a hermetic seal around the body of the can in an automatic way. It is capable of forming double and triple seal. The lid is made of tin plated steel whereas the boy of the tin or can is made of aluminum, stainless steel or glass.

    Automatic can sealing machine are provided with many seamer heads or chuck. This number can range from 4, 6 or 12. As the number of seamer heads would increase, the capability of sealing tin cans would increase too.

    This would result in the increased sealing capacity of the machine and would be able to package high volume of products in lesser time, earning more profits. Moreover, this machine greatly reduces labor costs since the whole process works pretty much on its own and only requires a worker to monitor it.

    Semi-automatic Can Sealing Machine


    This type of machine is almost exactly like automatic can sealing machine with the exception that a worker is required to initiate the sealing process. Moreover it can only seal one tin at a time. Thus it is ideal for small scale businesses or factories where there is low volume production.

    This machines’ greatest feature is that it is way cheaper than automatic can-sealing machines, making it affordable for a greater number of people who want to install it in their small factories. Plus, it gives accurate results since the process is not completely manually operated.

    Manual Can Sealing Machine


    This type of can sealing machine as the name suggests is used to seal tins or cans manually. It consists of a long handle to hold the sealer and a circular disc that seals the lid. it is the cheapest among all of them since the whole process has to be done manually. It is safe, convenient, and easy to use and is ideal for use in homes.

    • Based On Machine Design

    Rotary Can Sealing Machine


    In this type of machine, when the sealing process is taking place, the can is made to rotate on its own axis. It is also provided with 18 seamer heads. Thus this type is suitable to integrate in an automatic can sealing machine which needs to seal thousands of cans in a single day, making it ideal for large-scale operations.

    Rotary can seal machine is used in those industries where the customer doesn’t have to worry about dents forming in cans or spilling of the contents inside it. It is ideal for sealing round-shaped cans.

    Non-rotary Can Sealing Machine


    In this type of machine, when the sealing process is taking place, the can remains still and doesn’t rotate on its axis. It is ideal to use in industries where the cans are filled with liquid products and the contents inside need to be handled carefully to prevent their spillage. It is used to seal oval and rectangular-shaped cans.

    Thus it is much safer to use and the customer doesn’t have to worry about the cans getting damaged or the contents leaking from the inside.

    7. Can Sealing Machine VS Bag Sealing Machine


    Even though, the main purpose of both these machines is to seal products in a bag or a can, there are a few differences which make them unique in their own way.

    Bag sealing machine is mainly dependent on the heating process to seal bags or pouches. With the help of a power supply, heat is produced at the top and bottom of heating blocks which then seals off the bag with the help of rollers.


    On the other hand, the can sealing machine uses force or pressure on the body of the can after which the seamer head aligns the lid with the body of the can. Next, the seaming rollers apply pressure over the lid till it attaches to the can and forms an airtight seal.

    When comparing their cost price, can sealing machine is relatively more expensive than bag sealing machine. In terms of space requirements, can sealing machine generally takes more space than bag sealing machine.

    8. Automatic Can Sealing Machine VS Semi-automatic Can Sealing Machine


    Although this two machines have the same purpose and seal cans and tins exactly the same way, they have a few differences. Automatic can sealing machine seals cans or tins automatically that is, it works completely on its own without any person’s involvement.

    The worker only has to monitor the whole process with the help of control panel. Whereas in a semi-automatic can sealing machine, the process has to be initiated by a worker. He needs to put the cans inside to begin the process.

    In terms of space requirements, an automatic can sealing machine usually takes more space than a semi-automatic sealing machine. Moreover, automatic can sealing machine is more expensive than the latter since it is more efficient, high speed and has the ability to seal more tins at a time than a semi-automatic can sealing machine.

    This makes automatic can sealing machine more ideal for large-scale industries whereas semi-automatic can sealing machine is more suitable for small-scale businesses and factories.

    9. What Is the Maintenance of Can Sealing Machine?


    Like every machine, can sealing machine requires general cleaning and maintenance to improve efficiency and overall performance. Let us discuss a few points which would help us understand how to maintain this machine.

    • Instruct a team of workers to inspect the machine regularly to check if all the parts are working fine and check for any defects.
    • Lubricate the machine especially the seaming rollers with oil to prevent friction which would decrease the efficiency
    • Check if the operating system controlling the process is equipped with the latest technology and look for the latest software updates.
    • Clean the machine regularly with fabric cloth to remove any dust particles from accumulating on the parts.
    • Whenever a new can of a different shape or size is used, the seamer head needs to be adjusted accordingly.
    • The distance at which the pressure head and the sealing wheel are away from each other should not be more than what is acceptable.
    • The room in which the machine is kept should be properly ventilated to ensure the safety of the machine and the people working around it.

    10. What Are the Problems and Solutions of Can Sealing Machine?


    Problems Solutions
    a) When the seaming rollers are too tight, it forms a defect known as cut seam in which fractures are formed over the outer layer of the can. Adjust the seaming rollers to loosen them which would prevent the formation of cracks.
    b) Too much pressure on the turntable would form droop which is a metal that protrudes from the bottom of the seal. Decrease the pressure on the turntable or loosen the seaming rollers.
    c) The conveyor belt has broken down. Replace the conveyor belt with a new one.
    d) A defected lid is used to seal the can, causing a defect called false seam. Check the lids for any defects thoroughly before using them to for sealing purpose.

    11. What Quality Standard Should Can Sealing Machine Conform To?


    Before installing Can sealing machine in your production line and using it to seal your products, one needs to check if the machine conforms to the standards issued by the government or organizations to ensure that the machine is safe to use and would not harm the environment.

    Moreover, it would also ensure that the products are safe to consume and do not pose any serious damage to the health of the people. For this reason, there are guidelines which are:

    Current Good Manufacturing Practices Quality Standards (cGMP)

    This ensures that the goods being made is of high quality standard and the industry is using raw materials from a trusted supplier which supplies good quality materials. Plus it also meets the current standards needed to pass the criteria which is issued by this organization.

    International standard organization quality standard (ISO)

    This gives the guidelines for quality controensuresensure that the product which is being packaged meets the criteria.

    Electronic quality standard (CE)

    This ensures that the manufactured goods satisfy the customer’s requirements.

    Food and drug admin quality standard (FDA)

    This organization gives guidelines for public health protection.

    12. What Are the Factors Which Need To Be Considered Before Buying a Can Sealing Machine?


    Can sealing machine comes in various sizes, types and other specifications which are suitable for certain industries or products. Therefore one needs to take into account various factors before buying this machine. Let us take a look at these factors.

    Budget Limitations

    Can sealing machine comes in three different forms, each have different costs. Thus the customer buying needs to check his affordability. Automatic can sealing machine is the most expensive one whereas the semi-automatic can sealing machine is cheaper than the former.

    Sealing Capability

    Automatic can sealing machine have the highest sealing capacity whereas semi-automatic can sealing machine and manual sealer have lower sealing capacities. The customer needs to check which type of machine would be suitable for his industry.

    Space Requirements

    Different types have different space requirements. The customer has to keep in mind before buying whether his choice of machine would be able to fit in his factory.

    Authenticity of the Manufacturer

    Before buying this machine, check if the manufacturer is authentic and is approved by the government.


    After discussing all the points above, we can easily say that Can sealing machine is high-speed, efficient, easy to use and a highly versatile machine. It is the go to option for anyone who is looking for a machine that would easily seal his products, whether it is a small-scale business or a large-scale industry, this machine is an excellent choice to install in your production line and reap its benefits!

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