Can opener: features and purpose, types, popular models, how to open a can with a can opener, opener, knife with a wheel

In modern life, it is difficult to imagine the absence of special tools for convenience when preparing food. One of these is a can opener. This device comes in handy when you need a snack, but don’t have time to cook. Then you have to open canned food, but this cannot be done using improvised means.

A can opener is an important assistant in the kitchen.

Since the time when the first cans were invented, significant difficulties have arisen in extracting useful products from them. You can open the jar using a regular knife, but this procedure is not safe. You can damage not only the vessel, but also cut yourself.

Because of the difficulties described above, people came up with the idea of inventing a special device that would significantly simplify the process of opening sealed containers. Many tests were carried out before can openers were invented.

This revolutionary discovery made it possible to significantly simplify human life.

The invention first appeared at the beginning of the nineteenth century, when society was faced with the acute problem of opening tin cans. It was during this period that the technology of food canning actively developed.

Only after a significant increase in the number of canning manufacturers were knives for opening cans invented.

There are many different models from different developers on the market today, so you can choose any of them.

Features and purpose of can openers

In the twentieth century, can openers first received the look that many of us already know today. Since then, the design has remained virtually unchanged. It consists of a wooden or plastic holder, as well as a metal element that performs the cutting function.

Depending on the variety, there may be several cutting parts designed to open different containers.

There are designs with sharp teeth at the end. This makes them universal devices for opening cans for almost any purpose.

Modern devices are multifunctional devices that help out any housewife in the kitchen. A classic opener differs significantly from a similar device for cutting food. It has a different shape and size.

It will allow you to quickly and effortlessly open any jars for cooking or treats.

Some of the devices are equipped with additional design features that can significantly simplify the procedure for opening a can. Among them are magnets, wheels, and handles.

Modern products are distinguished by a special design that allows minimizing contact of the knife with the contents of the jar. This prevents metal particles from getting into the container.

Unlike old can openers, even children can use modern can openers.

Additional Information. You can find options that are designed for right-handers or left-handers. This approach allows people with special needs to simplify the process of opening a jar.

About the Kredmash key

Numerous reviews posted on the Internet highlight several advantages of the Kredmash canning accessory.

Read also: Marinated zucchini without seaming

Among them the most frequently mentioned are:

speed and quality of the conservation process;
ease of use of the key;
the accessory is very comfortable to hold in a woman’s hand;
The device weighs a little, which makes the screwing process easier;
there are no unnecessary unnecessary details that confuse new housewives;
the product is made of carbon steel with a protective coating;
the handles are covered with durable plastic, black in color - this material protects the skin of the hands from the appearance of calluses;
the plastic covering the handles does not rotate or wobble;
8 turns are enough for a hermetically sealed seam;
the key is very easily removed from the neck;
The seams are smooth, no waves or other errors are formed;
Time-tested machines are distinguished by the absence of rust and other factors that destroy metal.

Types of can knives

On the modern market you can find different types of knives for opening cans, so each housewife will choose an option specifically for herself. There are several main types of devices, each of which differs in design and operating features. Depending on this, the most suitable option is selected.

You can use it to open a can of green peas or a bottle of beer in a matter of seconds.

Manual

These are the simplest types of devices that have been common for a long time. Characterized by durability and long service life. They are structures with wooden handles and a metal cutting part. It, in turn, consists of two elements - for opening cans, as well as prying off the lids on glass seals. This part is attached using plastic or wood. The strength and durability of the product depends on this.

Manual canning knives are durable.

The design with the wheel is just as simple. At the same time, it is safer compared to the previous option. By rotating the cutting teeth, the can is opened.

Mechanical

Such devices are more complex. At the same time, their functionality allows use in catering establishments. The operating principle is quite simple. The sharp end pierces the lid of the jar, after which it is secured. Rotation occurs using a special valve.

Such devices are used by the catering industry.

Additional Information. Typically made from durable steel. You can open up to thirty different cans per day. Fixes the structure tightly on the table, which allows you to quickly open the desired container. You can process up to five cans in a minute.

Among the special characteristics of such knives it should be noted:

reliable fastening and a working surface that does not lend itself to rust formation processes;
sharpened blade made of high-strength steel;
a plastic bushing that can significantly reduce the force during rotational movement;
high speed of assembly and disassembly, so there is no need to use additional equipment;
Can be washed even in the dishwasher.

It is capable of uncorking any type of canning containers at a speed of 5 pieces per minute.

Note! This option is an excellent device for home use. Especially suitable for those who often open canned food.

Automatic

A simple and practical model that is very easy to use in practice. Batteries are used for operation. The device is installed directly next to the lid, after which it is started by a special switch.

This knife model is fast and easy to use.

It has the following advantages:

ease of use at home - no need to make any effort, even a beginner can handle opening;
safety - the opening points remain smooth, so it is impossible to cut yourself on them, which eliminates the possibility of domestic injuries;
compactness – takes up a small amount of free space;
there is a magnetic coating that allows you to easily attach the blade to the lid without damaging the contents of the jar;
long service life - if used correctly, the device can last for many years.

Before using an automatic can opener, you should carefully study the operating instructions for the device. Care should be taken during operation. Keep the device out of the hands of children.

Before using an automatic can opener, you must read the instructions.

Do not use a bottle opener to open containers with flammable contents. To clean the product from contamination, it is necessary to completely remove the automation.

Electrical

The product looks like a manual analogue. Many models are made in the form of a cutting wheel with a wooden holder. Used to open a can at maximum speed. There is a motor inside that drives the impeller. Each model has different operating features.

The first device of this type was developed on the basis of a manual analogue with a cutting wheel.

It operates according to this principle:

using the holder, the opener is fixed on the lid of the jar;
the switch activates the motor, after which the automatic opening of the can begins;
removing the retainer from the jar lid.

Modern manufacturers offer many different options. There are portable and desktop models. The first option takes energy from batteries, and the second - when connected to the network. You can also find multi-function devices that are designed to open different types of cans.

An electric can opener allows you to uncork containers as quickly as possible.

Important! Before you start opening the can, you need to carefully secure the opener with a lock.

Mechanical keys

More complex mechanical designs are often used in catering establishments. A professional can opener is fixed to the edge of the table using screws or special clamps.

Homemade machines consist of two levers and a thumb, which, when turned, cuts off the lid of the can.

Advantages of a mechanical opener:

High quality sharp blades, sharpened on both sides, made of hardened carbon steel.
Rust-resistant mechanism.
Plastic bushing that facilitates movement and reduces physical effort.
Simplicity of design, allowing you to independently disassemble and reassemble the mechanism if necessary.
Dishwasher safe.

How to choose the best can opener?

When purchasing, you must follow some rules. Please consider the following product parameters:

the material from which the cutting part is made;
features of use - how easy it is to open the can using this design;
principle of operation and functionality of the product;
dimensions of the device and its weight.

Handles made of plastic are more practical as they do not slip in the hand.

The impeller is usually made of stainless steel - this is the most durable material.

The manual type of construction must be securely fastened, and there should be no nicks or roughness on the surface. When purchasing an electrical product, you should pay attention to the material used and the type of power supply. Desktop models must be protected from slipping, since the safety of operation of the product directly depends on this.

There is no need to make any effort to open the jar.

Useful tips

When choosing a good can opener, you should pay attention to several very important factors

If the knife is intended to be opened manually, it is better to opt for a solid metal base. But the handles and valve may have a plastic coating. The steel must be of fairly high quality so as not to corrode over time. When purchasing, you need to be guided by previous experience and choose either something similar or something completely simple

For beginners who are faced with purchasing kitchen utensils for the first time, simplicity and ease of use are important. When choosing, it is important to take into account the reviews and recommendations of those who have already tried this or that can opener. Manufacturers with a long-standing reputation are preferable to unfamiliar but cheap counterfeits, because a truly high-quality opener will last for decades. When first examining the product, it is important to evaluate how easily all its parts function.

Smooth, non-slip handles and body are an added plus. Be sure to find out how to care for the device. The choice largely depends on the lifestyle and habits of the owner. For example, if canned food makes up the bulk of a person’s or family’s diet, then it’s clearly not worth skimping on a knife to open it. If you are planning forays into nature, it is important to have a compact model that does not depend on electrical power. Often such devices are made multifunctional. For example, they add bottle cap openers, etc. Most often, this leads to an increase in price.

For an overview of the electric can opener, watch the video.

How to use a can opener?

Depending on the type of product, the rules for its operation differ. Using it will require some skill, otherwise problems may arise. Below we will discuss the rules for using the main types of products.

The manufacturing material must be chosen to be reliable and of high quality.

How to open a can with a can opener?

If you have an older can opener design, then follow this procedure to open the can.

Direct the cutting end perpendicular to the working surface. Press down on the handle to drive the cutting part deeper. Over time you will learn to do it correctly. Such openers are the most common option, despite the existence of advanced designs.
Please note that you must firmly support the jar you are opening while opening. During the learning process, it is recommended to use the help of another person.
Place the knife into the hole and begin to widen it. At the same time, move forward.
Cut the tin can using forward movements. Carefully walk around the already cut part, as there are very sharp teeth there. Otherwise you may get hurt.

When opening a can using a manual model, try to hold the container firmly on a hard surface.

Be careful not to touch sharp edges to avoid damaging your skin.

How to use a can opener with a wheel?

Before you begin the opening process, carefully study the design of the can opener and follow the algorithm.

Place the sharp wheel on the lid of the tin can. Level it if necessary. Secure the device using a wedge. To learn how to do this quickly, you need to practice.
Secure the wedge firmly and then begin to move along the working line. During rotation, the lid will begin to yield and open.
Rotate the handle and move along the edge until you open the lid.

Opening jars should be convenient.

How to use an electric can opener?

To properly open a jar using an electric knife, follow the instructions.

Place the can under the cutting wheel. Secure it firmly so that the container does not slip off during opening.
Start your device. Support the jar so it doesn't tip over.
The electric opener has a magnet on the end that holds and lifts the lid as it opens. Go to the end of the lid. The process can be considered completed. It won't take much time.

You can choose multifunctional appliances.

Features of a can opener

Each type of structure requires compliance with certain care rules:

Do not use hot water for washing;
some models are not dishwasher safe;
The product can be stored with other kitchen appliances;
You can use any detergent for cleaning.

How to use a can opener directly depends on the type of design.

How to open a glass jar

Usually a glass jar is sealed with a simple or screw-on lid. Simple lids are used at home when canning vegetables. In production, containers are closed with screw caps. How to open a rolled up can:

Home canning

When opening a twisted jar of cucumbers, all the work is done with a knife, being careful not to cut yourself. We draw a tick on the lid of the container so that its three sides reach the very edge of the lid

The lid is cut exactly along the lines, after sticking a knife into it. The entire cut section is slowly twisted onto the knife. Then the remaining part is removed. Industrial conservation. Opening a jar with an iron lid is twice as fast as opening a canned jar at home. It is enough for air to get inside the container. To do this, pry off the lid with a knife. When there is a barely audible pop, it is open. You can replace the knife with a rubber mallet. They hit the lid with it to make a bang.

Popular models of can openers

Can opener MVQ 75020PCO

The model is attached to the table. Ensures that the can is securely fastened during opening. Characterized by safety and durability.

Used in industry and everyday life.

Can opener Tescoma President

Universal device made of high quality stainless steel. Characterized by convenience, stylish design and ease of use.

Tupperware can opener

Allows you to open the jar safely without sharp ends. Allows you to open a jar of any diameter with minimal effort.

The opening mechanism does not come into contact with food.

Can opener IKEA STEM

A revolutionary device at an affordable price. Allows you to open jars of different sizes and diameters. Even a child can handle opening the can, thanks to the security system.

IKEA KONSIS can opener

The device is made of high quality stainless steel. An indispensable device in the kitchen of any housewife.

Can only be washed by hand.

Can opener Joseph Joseph Can-Do

A bright and stylish device of a new generation. It is characterized by high functionality and ease of use.

Allows you to carry out many operations.

A bottle opener is a must-have device in the kitchen. Be careful when choosing a product. Try to buy products only from trusted manufacturers.

Safety precautions when opening a can without an opener

All actions associated with opening a tin container without a special device carry the risk of getting a cut or abrasion. Therefore, when using available means, you should follow safety precautions so as not to cause harm to health.

Do not open a tin can with a knife while placing it on your knees or holding it between them.

If you still cannot avoid a cut, you need to wash the wound with running water, treat it with an antiseptic, apply a gauze bandage or stick on a bactericidal patch.

Thus, using some techniques and devices, you can open cans even if a special knife is not available. However, when going on a hike or picnic, you should take a can key with you. This device will not take up much space and will help avoid injuries and waste of extra time.

Automatic openers

An automatic can opener is a very convenient model that is simple and easy to use. Automatic can openers have advantages:

Convenience - when opening a can, you do not need to make any physical effort.
Small size - the device can fit in a regular kitchen drawer.
Safety - the device leaves the edges of the container smooth, and when opening it is impossible to cut yourself or get injured.
Hygiene - the device has a small holding magnet that removes the open lid, preventing it from slipping and preventing it from falling into the contents of the jar.
Independence from the presence of an electrical network.
Duration of use even with constant use.

Bare hands

There are times when there are no objects nearby at all. In this situation, you have to rely only on your own hands. The method will only work for a strong and physically fit person:

Hold the jar between your palms. In this case, it should be located horizontally. Make a dent in the center of the side with your fingers. Then you need to press again on the resulting depression so that the metal bends inward even more.
The same steps must be repeated on the other side.
Now you should take both bottoms with your palms and make uniform rotational movements towards each other. The deflection area should crack. The jar can be divided into two halves.

Bare hands

There are times when there are no objects nearby at all. In this situation, you have to rely only on your own hands. The method will only work for a strong and physically fit person:

Hold the jar between your palms. In this case, it should be located horizontally. Make a dent in the center of the side with your fingers. Then you need to press again on the resulting depression so that the metal bends inward even more.
The same steps must be repeated on the other side.
Now you should take both bottoms with your palms and make uniform rotational movements towards each other. The deflection area should crack. The jar can be divided into two halves.