Can making machine: seaming

Can making machine: seaming

A can making machine is made up of a series of process and machines that enable the production of cans. These processes have been integrated to ensure the whole process is smooth and quick. A can making machine can make round cans, mints cans, irregular cans and rectangular cans using a different production line. The general processes of making cans are:

  •   Can body making
  •    Slitting
  •    Beading
  •    Top curling
  •    Necking
  •    Seaming
  •    Flanging
  •    Bottom making
  •    Lid making

In this article, we are giving insights on how seaming is done during the production of cans.

What is can seaming?

Can seaming process involve joining the lid or the bottom to the can body. At times the lid and bottom, unlike the rest of the body is made of steel as a preventing measure.  Seaming a can should be done in such a way that the final product will be leak proof. Normally this process is done mechanically by overlapping two layers to create something like a hook. Under different conditions, different parameters have to be taken into account to ensure the “hook” meets the required standards.

Under double seaming, a seam is obtained by interlocking five materials; two layers done on the can body and three in the lid. Double seaming depends on several factors that include quality of seaming machine, the condition of seaming rolls, lifter pressure and others.

The overall shape of the double seaming is usually determined by the shape of the relative position and the roll profile. During this process, the seaming machine holds the can body as the roll is rotated around. In the first instance, the roll will fold the lid when during the second instance the roll will tighten it forming a seam.

To avoid problems, you should be careful when making the first operation of folding the lid or bottom to avoid issues like leaks and wrinkles. As much as the first operation determines the shape of the final product, parameters such as relative distances, position, pressure and lifter height should also be taken into account.


Apart from making cans, seaming applications include:

  •    Automotive filter
  •    Capacitors
  •    Drums
  •    Automotive mufflers

When choosing a can making machine, it is good to take into account the shape of the cans you want for your application. These machines come in various sizes with different features. It is also good to get a machine that has processes integrated into one for quick production.

Tin packaging vs. PET packaging

Tin packaging vs. PET packaging

PET cans made by PET stretch blow molding machine and Tin cans made by tin can making machine are widely used for packaging purposes. For instance, PET alone covers up to 30 percent of all beverage packaging, unlike tin cans that are about 16 percent. PET nowadays are technology and consumer driven, the versatile nature of this material makes it ideal for multiple drink applications. On the other hand, tin cans are made using a can making machine production line that involves several processes integrated into one.

Tin Cans

While PET may have the played a more significant part in drinks packaging, tin cans keep on representing an expansive bit of the food products, brew, soda pops, and spirits markets. Of 1.250 trillion packaging units, tin records for 17% out of 2015, which has dropped to 16% of 1.419 trillion units in 2018.

Various patterns are influencing the material choice for packaging. One is item differentiation; this is a noteworthy driver in packaging. This includes metal cans that can be fabricated into different shapes and sizes using can making the machine. The use of unique shapes also encourages marketers to reposition an item from ordinary to premium level to help justify the higher packing costs. Apart from the packaging’s shape, other important distinctions for an item can be made through printing, marking and other design techniques.

Recyclability and supportability are among the real trends influencing the worldwide market of tin cans. All inclusive, tin refreshment cans have a rate of collection of around 70%, which is more than twofold that of some other drink cans. Furthermore, in recent decades, tin cans have turned out to be impressively lighter. Enhancements in can-production innovation and the nonstop advancement of tin evaluations have made conceivable the down-gauging of cans in the can-production process. The decrease in weight is advantageous as it reduces the amount of waste.

PET packaging

On the other hand, PET containers are commonly used in drinks such as mineral water and other non-carbonated drinks. This is because they are efficient, light, safe, transparent and recyclable also. For some products, the taste and purity are very crucial. In such case, PET materials are normally used as they are made up of long chain molecules that are less reactive and have a high melting point. Due to pollution issues, PET materials are usually collected and recycled back. Also, there is growing use of PET packaging as it adds resource reduction in the supply chain, especially during distribution.

Depending on the nature of your industry, the production cost and the type of your product, you should always go for the material that suits you.

Types of Metal Cans for Packaging

Types of Metal Cans for Packaging

Canning products is among the current popular way of packaging items especially food. The kind of food being packaged determines the type of can to be used. Metal cans are categorized into three groups depending on their structure, materials used and the degree of internal pressure. Can manufacturers are guided by these qualities in their production line to process the tins using the can making machine. The structure can either be 3 piece cans or 2 piece cans. The common material includes aluminum and steel. The internal pressure can be in the form of vacuum cans or pressurized ones. The article will, however, focus on the 2 piece and 3 piece classification of metal cans.

2 Piece and 3 piece cans

The 2 piece cans comprise two components. The first includes the integration of the body with a bottom lid and the second is possession of a lid with an opening. The 3-pieces cans, on the other hand, consist of three components. The first is a bottom lid; second is a cylindrical body and the third is the top lid. These components are produced separately and then later attached using a technique referred to as double seaming. For the 3-piece cans, they are crafted from a rectangular metal sheet, rolled into a cylinder and then soldered or electric welded. The most common are the welded cans as they are cheap to manufacture.

Manufacturing of 3-piece cans

These are the common types of tin cans used in the market. Although some of the plate used for making 3-piece cans is first coated with tin then oven-dried, there are pure tin cans in the market. The plate is then cut into the desired sizes and shapes for further processing. It is then folded into a longitudinal cylindrical body while the bottom and the lid are also made. The tubular can without any content is referred to as a blank. When filled with the intended content, the cans are air-tight sealed through the crimping process. The can-sealing machine is used for this function. After sealing, the cans are sterilized or pressurized in an autoclave to induce non-perishability.

2-piece cans

The 2-piece metal cans consist of an integration of a bottom lid and top lid with the body with the aid of a can making machine. The processing of the can body is categorized into Draw and Redraw cans (DRD) and Draw, and Wall ironed cans (DWI). The 2-piece cans are usually hermetically sealed with a design to maintaining the freshness of the content packed inside. The food items packed in these cans retain their color, taste, and flavor. They can also be used for instant packaging of products that does not require thermal processing before consumption.

So if you are planning to buy a tin can making machine production line to produce your own tin cans, you need to understand the kind of cans that you need. Check whether the can maker machine is able to produce such can to avoid the expensive return process.

Factors to Consider Before Using a Can Opener

Factors to Consider Before Using a Can Opener

Although can openers are usually simple devices to operate, there are few major safety issues that one should consider before buying one. While it is crucial for everyone, it becomes more sensitive where children and elders are involved in using them. Can making machines manufacture tins with different types of lids. Opening or closing these lids, therefore, require the aid of a can opener to retrieve the product packed inside. Below are some of the tips that you should emphasize before purchasing a can opener.

Type of edges created by the can opener

Among the major risks that people face when using can openers are the sharp edges formed after cutting open the can lid. It is more dangerous if the opened cans are at any point to be touched by little kids as they can cause serious injuries. It is therefore vital to focus on can openers that form smooth edges which often cut from below the upper rim other than cutting directly into the lid. There are also some improved models of can openers in the market that allow the removal of the lid other than cutting it. For guaranteed safety even when using openers that cut smooth edges, it is important to avoid touching the lids with bare hands as there may be some sharp endings that are not visible.

Locking mechanism

It may not seem crucial, but having a can opener that ensures a tight lock is a key safety feature. Can openers with a poor grip may easily slip off while locking the can which can cause the scrapping of your hands. It is, therefore, necessary to consider the models that create a secure lock to prevent any chance of injuring your hands. The locking mechanism is a feature that many may ignore when purchasing a can opener but it ensures safety when locking the cans. But that depends of the materials used for constructing the can. Tin cans are a nit a big problem.

Mode of turning

A good can opener should have a knob that can easily turn while using it. An opener with a knob that is hard to turn may force the user to exert a lot of pressure which may result in accidents such as slipping off and hurting from the can. An easy opener knob preserves the amount of strength used thereby avoiding arm aches. However, the strength used should also be measured depending on the material tin cans are made from.

The strength of the opener

Depending on the type of product being packed, some cans are made from a very strong material or reinforced with pressure to avoid damage. Can maker machines may also manufacture strong and tight lids that may prove difficult to open. Such lids require strong can openers to handle them properly as weak ones can break and result to safety issues such as deep cuts or scrapes. But you must ensure the material used can withstand extra force.

The Process of Can Manufacturing

The Process of Can Manufacturing

A can is a small container that is used for storage and distribution of items. In most of the times, the cans need to have removable covers for retrieving the products while others may be enclosed in such a way that they have to be cut open. Cans are often used for industrial purposes such as storage of product meant for sale or holding beverages, oil, chemical among other several uses. The process of manufacturing cans, aided by can making machine, is not a complex one but involves processes such as seaming and fabrication.

There are numerous steps involved in tin making and must follow each other strategically to achieve a perfect can. They include the curling of the top, body making, slitting, seaming, flanging among others. The primary material is the tin plate, and the slitting process cuts it into precise size and shapes. The combination of these steps results in an end product which is the desired can.

Slitting or Shearing

The first in the can making process is cutting the blanks in various sizes. The packaging can are often made in different sizes and shapes to fit the requirements of the customers. The tin can-making machines, therefore, contains structures that allow altering of shapes and sizes of the cans as demanded. The common types of tin cans produced in large quantities include mint tin and soup tin. The walls of the tins are stiffened with bulges to avoid dents. Cans are usually made from tin aluminum or can be coated with tin depending on the content packed in them. Once the blanks are cut in right sizes, process of can body making begins.

Can Body Making

Once you have the right sizes for your machine, the next step is can body making. Depending on the kind can making machine production line you are using, the entire can body making should fully automated. Where the blanks are folded to for the actual shape of the tin.


The process of seaming involves the integration of the can body with the bottom and top lid. Several steps such as flanging are part of this process. One end of the can which is undergoing curling is flanged with the body of the can, and then they are joined. The can making machine that conducts this process has various components which include a closing station, seaming chuck, base slate and the operation rolls. However, seaming process depends on the can maker machine that you are using.


Fabrication process has a number of stages that are involved. These include the formation of the cylindrical form from the plate and then soldering of the seams. It then follows the integration of the can body with the bottom end. What comes next is the attachment of the labels and then their printing to include the details of the content inside. After this, the blank can is filled with the desired content. For preservation purposes, sterilization or retorting is conducted before the final step is carried out which is the joining of the body with the top lid.

Important Basic Information before Vacuum sealing Food at Home

Important Basic Information before Vacuum sealing Food at Home

Vacuum sealing is a lifesaver approach when it comes to extending the shelf life of various food items at home. Its functioning principle includes the removal of air from the plastic bag before storing it thereby keeping them in fresh condition for a more extended period. To achieve this, you have to acquire a vacuum sealer machine at any of the various home appliances outlets. Knowledge of the process of food storage is a fundamental requirement before or when you purchase vacuum packaging machines.

For the newbies, there are a few basic things that you need to know about these machines. First, it is important to note that not all vacuum packaging machines can be used for the family kitchen. These machines vary a lot even in application. Here are some of the necessary things you need to know about vacuum packing machine.

The different types of vacuum sealers

The size of your kitchen will probably guide you on the kind of vacuum sealer machine to acquire. A space-limited kitchen will likely be compatible with a hand-held vacuum sealer which is small in size and highly portable. For those with large-spaced kitchens, they might opt for the larger counter-top systems, for instance, Food saver vacuum sealer.

Choice of sealer bags and containers

The quality of the bags and containers on the market are not all the same. It is, therefore, necessary to take precaution and avoid using low-quality bags or incompatible one with your machine. Using bags not recommended for your vacuum sealer machine may cause damage due to spillage or improper sealing which can consequently create air pockets hence spoilage of the stored items. Another consideration that needs to be made is the choice of accessories to use with your machine. Although the sealer bags present a lot of convenience during packing, it is difficult to reuse them and will, therefore, require regular replacement hence a high cost of bulk-buying. Compatible jars and containers can be perfect alternatives that offer the chance for reuse and thereby cost-effective.


Carefully following the storage guidelines

Although vacuum sealing might appear like a shortcut to easy storage of food, there is the need to consider the common guidelines of food storage and adherence to food safety standards. Additionally, storage of other non-food items should be carried out carefully as most of them might be rough enough to cause damage to the sealer bags and other components of the machine. Moreover, one should have the complete knowledge of the type of the machine they purchase to avoid filling it with products which it has no capability to store.

Maintaining cleanliness

The efficiency of vacuum packing is determined by how clean you keep your vacuum sealer and other accessories used with it such as the sealer bags. The bags, for example, need to be clean and free of moisture before any item is filled in them as the moisture may result in a bad seal. The appliance needs to be cleaned to remove any particle that may jam it or cause contamination. Great caution is also of the essence when cleaning the machine as it requires to be turned off to avoid electrocution. Chemicals should be avoided while cleaning: only soap and water are required then a wipe with dry towels.

Vacuum sealing leftovers before refrigerating

Vacuum sealer machine present the advantage of allowing the storage of leftovers rather than throwing them away which can later be frozen or refrigerated. This way, wastage at home or during outdoor activities is minimized. In a nutshell, you are able to save a lot of money comparatively on buying food.

There are beneficial uses of vacuum sealer other than food storage

Many people only relate vacuum sealer with food storage. There are several other applications of the machine such as storage of important documents, valuable items such as jewelry and precious metals, clothes among other industrial uses such as drugs storage in major laboratories.

The above tips are very important to anyone who wishes to acquire a vacuum sealer as they help in the choice and also wise usage to ensure its long life and efficiency.

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