Common can defects when using a can making machine

Common can defects when using a can making machine.

If you are working on a processing or manufacturing industry, you must have come through acan making machine. This machine is designated for making cans have different machines integrated together to form a continuous production line. The production line begins by slitting process where a plate is cut into blanks. These blanks are then used for making the can body. After the body is made, necking and beading are done. Finally, there is a seaming process that is very crucial in can production. Can seaming involve joining the bottom part of the can to the rest of the can and sometimes joining the lid with can body.

The processes of seaming involve different operations, and at every single stage, one should be careful as it affects the general shape of the can. There are single and double seaming; double seaming involves several layers mechanically interlocked together to form a seam. As much as this process is smooth, there several factors that has to be taken into considerations. These are:

  •    Conformity of the can body with the bottom or lid specification
  •    The nature of the seaming machine
  •    The condition of seaming rolls
  •    Lifter pressure and other components


A problem arises when one of these factors is not kept in check. These will result in seam defects that are very common when using a can making machine. These defects normally cause leaking of cans thus allowing the external contamination or reduce in shelf life. Here are some of the common defects in seaming:

  •    Cover vee- this is a projection of a seam just below the bottom of a normal seam resembling the v-shape.
  •    Cover droop- this occurs at the bottom of the seam below the double seam. It is usually a small projection.
  •    Cut over-this normally happens at the top of the seam that is inside and is sharp
  •    Dead head-also called spinner, it is caused by chuck spinning making the seam to be incomplete
  •    Knocked down flange- this is a defect that occurs when the body and cover hook do not interlock due to a bent.
  •    False seam-this is a portion of the seam that is not hooked.
  •    Long body hook-this is when the body hook exceeds the required specification.
  •    Long cover hook- this is when the length of the cover hook exceeds the required specification.

These and many more are some of the defects that are common when using a can making machine during the seaming process. Ensure that you keep the condition of the machine and use the correct material to avoid these common defects.

Advantages And Disadvantages Of Tin Cans

Advantages And Disadvantages Of Tin Cans

In recent years, people have had the adoration of illicit relationship with tin cans. This is because tin has inherent qualities that make it great for packaging products. These cans are produced by can making machine and are not only used for food products, but they are also common for packaging drinks, promotional, household and industrial products.

How Are Tin Cans Common?

One of the can manufacturing institutes asserts that steel cans are used for more than 1,500 food products around the world. This is a genuinely remarkable number when one considers how much food is expended each month in a country like China and the United States alone. For instance, the U.S. Registration Bureau reports that $389 million dollars worth of sustenance stuff in the retail and nourishment administrations industry was sold amid April of 2011. This is a considerable measure of nourishment, and most of these products are packaged in cans. And keeping in mind that tin cans are additionally convenient, they are likewise an asset that can be effortlessly reused.

Tin Can Advantages

  •    Tin products are up to 100% recyclable if discarded effectively.
  •    They are the most impact-resistant form of storage right now in the market.
  •    In 2006, a greater part of tin and steel cans were used, and around 28% was reused.
  •    Recycling tin and steel cans can spare millions of money in energy costs each year.
  •    Waterproof
  •    They are cheap when you compare with other metals

Tin Can Disadvantages

  • Tin cans are non-inexhaustible resources. Once produced, they cannot replenish. Because of this, the customer must ensure these cans are reused and repurposed.
  •   About 34% of the tin cans are discarded instead of reused.
  • Unless the empty cans are appropriately discarded and added to the shut circle reusing process, tin cans could, in the end, run dry.
  •    It can rust
  •    Sometimes it is expensive to recycle

Tin Can History

Napoleon Bonaparte’s campaign during the nineteenth century started nourishment packaging solutions when he offered a reward for any individual who could figure out how to safeguard food products for his hungry troops. In 1810, Nicholas Appert managed to win 12,000 francs from Napoleon when he came up with a technique of storing food products in glass containers. Also in the year, Peter Durand licensed an outline for iron can with tin plating and lead fastening. Quick forward 100 years to 1922: the procedure of can pleating was acquainted with a tin can production and by the mid-1950s, tin cans never again used lead weld.

Disadvantages of metal packaging

Disadvantages of metal packaging

In the 21st century, life has drastically changed due to its versatility and universal consumer approval. The metal packaging though being in the market for a long time, with the changes of the market trends, the industry is constantly on the move to research and innovate more of the sizes and designs convenient to meet the needs of increasingly demanding customers. Metal cans which are made of by mostly steel, aluminum or tin are a great asset and investment when it comes to storing and protecting food and also beverages for a long period. Metal containers, made with the aid of a can making machine, have a great advantage over other packaging methods because of its durable, resistance to high temperatures providing stability during processing. However, this method has a few disadvantages that are discussed below;


Steel is vulnerable to corrosion which causes the metal to deteriorate. If you find rust in the can, it is one example of corrosion. This affects the quality and also will bring about an adverse effect on the food packed inside and mostly would make food go bad. This cans can only be coated with polymers to prevent corrosion. However, tin cans are highly recommended since they are less prone to corrosion.

Aluminum and acidic foods

The corrosion of soft drinks in aluminum cans is a big challenge that the industry is facing and usually that results in loss of money. It is also important that metallic elements in food can cause severe health complications. Acidic foods such as tomatoes can be greatly affected by aluminum if the metal is used to store them. This ends up ruining the taste and quality of the food. However, tin cans could be a great alternative since the material is not affected by food acidity.

Content not visible

Most canned food is already sealed and therefore it’s hard for anyone to see whatever content is inside. This becomes hard for one to make a right choice since you may pick a can that has content that is not the desired one and this poses a significant challenge to the consumers. They sometimes prefer other packaging materials such as plastics in some situations where one needs transparency.

Metal is moderately heavy packaging material

Compared to other methods of packaging such as plastic, steel is heavy.  That is why it is more durable than other metals used in the packaging of foods. However, that means that it is quite expensive due to its construction process. That makes these cans expensive depending on quality of the material that is used. Therefore, you will be spending more in this method of packaging.

Multi-step cans manufacturing process

Manufacturing of metal cans involves several procedures in the production line and several input materials.  It also involves different machines that makeup the can making machine such as the seaming machine, slitting machine among others. There is also the need for a sealing machine to seal them, therefore, a lot of time taken in this process.

Tips for Selecting Tin Can Making Machine

Tips for Selecting Tin Can Making Machine

The tin can is one of the most recommended methods of packaging food and other consumer products. They are safe, secure and popular with consumers for the numerous benefits that they come with. However, if you are manufacturing large volumes of products, it would be uneconomical to buy can. Buying a tin can making machine production line is the most recommended. But how do you ensure that you have the right machine? Well, there are various factors that you need to look out for.

The modern tin can making machine extremely advanced in technology which makes the production of the tin can easy and efficient. But there are key attributes that you need to look out for in a can maker machine to ensure that you are getting the most out of your machine. Here are key tips for selecting tin can making machine:

Quality of The machine

One of the critical things that you need to consider is the quality of the machine. Just like any other industrial machines, there are various qualities in the market. But how do you tell the quality of the machine from the inferior once? It is is very easy. First, can making machines are heavy duty machines, and thus you need to consider the kind of material used for their construction. The material used must be durable and capable of withstanding wear and tear for long. It is also important to check the reputation of the consumer.

Ease of Use

The second thing that you should consider is the ease of use of the machine. You must ensure that you are investing in a machine that is easy to use and does not require a lot of technical expertise to operate. Fortunately, technology has made things easy. The modern tin can making machine has most of their functions fully automated or semi-automated. For instance, some of the tin can makers have the entire body can making fully automated. That makes it easy and cheap to run such plants since the level of expertise of the operator may be a little bit lower. Therefore, ensure that the machine you are investing comes with unrivaled ease of use features.


How much space do you have to set up a tin can making plant? Well, space is a critical factor especially if you are renting your premises. The type machine that you pick should take the smallest area possible. Fortunately, the market has everything you need. Due to the level of technological advancement in the construction of these can making machines, they have become smaller and smaller over the time. They are also extremely flexible in that you arrange them in the way that suits you space. Therefore, go for a machine with such flexibility features.


The last thing that you need to check is the cost of labor. You need to know the number of operators needed to run the entire tin can making machine production line. The lesser the number, the lower the cost and the more money you make. But the reduction in labor force must have been replaced by technology for the machine to work efficiently.