The use and classification of metal cans

The metal can is what we often call a can, which is a cylindrical metal can that is welded by several layers of ring plates and installed vertically. It is composed of tank bottom, tank wall, tank top and other accessories. The can lid and can body are produced separately and then assembled together. There are two materials for making metal cans: aluminum and tinplate. Because aluminum has a high recycling value, for environmental protection considerations, cans began to use aluminum in large quantities. Although aluminum is difficult to shape. However, aluminum can be recycled and reused, thereby reducing material costs. The metal can has very good airtightness and can withstand high internal pressure. It is suitable for loading carbonated beverages, which only require a little pressure, air and acid resistance. In recent years, Europe and the United States and other regions with active consumption of cans have continuously increased the recycling of aluminum cans and aluminum packaging materials, making aluminum cans a fashion for packaging consumption. Metal cans are widely used in the storage of food, medicines, chemicals, etc. The shape of the "containers" in various fields such as round, square, and other sources of food transportation and storage is characterized by good airtightness and wear resistance.

Basic information of metal cans

All kinds of metals (tinplate, aluminum, composite metals)

Storage of food, medicine, chemicals, etc.

Shape round, square, other

Source Food transportation and storage

Features Good sealing and wear resistance

Introduction to Metal Cans

  Metal can-making technology has experienced a long-term development process from the initial production of dozens of pieces per day to the production of 10,000 pieces per minute. Iron cans have experienced two hundred years of development to meet the increasing demand for packaged goods. Iron cans that are becoming harder and harder to break provide the most effective protection for food, beverages, paint, chemicals, fertilizers and other contents. Since tanks are made of recyclable materials, they are safe for the environment and a better choice than plastics. Many customers have therefore turned to canned products, which has promoted the development of the recycling industry.

History of metal cans

In 1795, Napoleon rewarded 12,000 francs for anyone who could find a way to preserve food supplied to the army.

In 1809, the confectioner Nicholas Appel had the idea of ​​preserving food such as wine in glass bottles. After many years of research, he invented a method of preserving food through sterilization and received a bonus of 12,000 francs from the French government.

In 1810, King George III of England granted Peter Durand a patent for preserving food in glass bottles, earthenware pots or metal pots.

In 1812, British immigrant Thomas Kensett established a small factory in New York to produce sealed canned oysters, meat, fruits and vegetables.

In 1825, Kensett obtained the first patent for tinplate cans in the United States.

Alan Taylor obtained the patent right to stamp tinplate cans with extended edge machine.

In 1849, Henry Evans obtained the patent right of a pendulum press capable of producing tank lids in one operation. As a result, the production volume has increased from a small amount to 50 cans per hour. In 1866, E.M. Lang obtained the patent right to seal the can by manufacturing or welding the can lid.

In 1870, France began to print color patterns on tinplate

In 1872, the British BABer introduced tinplate printing technology to Britain.

In 1875, Arthur A. Libby and William J. Wilson invented the trapezoidal pot to preserve corned beef in Chicago.

In 1877, a simple can-sealing machine appeared. In 1880, a semi-automatic can-making machine appeared for the first time. In 1898, George W. Cobb Fresh-keeping Company perfected the three-piece can. Paint for the inner wall of cans appeared in 1903. In 1905, the production process of canned food was introduced to my country, and Shanghai Taifeng Company began to produce food cans. In 1917, tinplate printing technology was introduced to my country, and the Commercial Press began to produce a small amount of iron-printing products. Born. In 1953, Switzerland Soudronic trial-produced the first resistance welding machine. In 1957, the metal can industry introduced aluminum materials. In 1960, the cans were produced. In 1963, the world's first two-piece steel can was born in the United States. In 1965, the first non-plating was developed. The first tinplate printing net in China was established in 2005.

Metal can definition

Metal cans are containers made of sheet metal. According to the shape, metal cans can be divided into round cans, square cans, special-shaped cans, handle cans, and heart-shaped cans. According to the molding process, it can be divided into two-piece cans and three-piece cans. According to the purpose, it can be divided into food cans, tea tins, medicine tins, daily necessities tins, chemical barrels, CD boxes, DVD tins, etc. Among them, the number of tin cans used for food is the largest, such as candy tins, biscuit tins, moon cake tins, biscuit tins, tea tins, and beverage tins.

Frequently Asked Questions about Metal Cans

Who are the suppliers of tinplate metal cans?

Shangzhimei Iron Can Manufacturing Company has twelve years of can-making experience. It is a specialized enterprise that produces various specifications of metal cans for the production of various coating solvents and other manufacturers. The main manufacturing equipment is advanced in technology and strong technical force.

How much is the iron storage box

The price of the tin box storage box Small tinplate box with lock is fresh and cute storage storage box The rectangular peninsula tin box includes the tin box storage box picture, the tin box storage box price is $8.00 The above price is from Shangzhimei for reference only

Metal insulation box

Metal insulation box: generally used for instrument insulation, hook nails: equipment tank body In order to hang the insulation layer on the outer wall of the equipment tank, tray: the tank body is relatively high insulation layer needs to set a circle of flat steel plates to weld to the tank body every certain height The steel plate whose outer wall drags the insulation layer and does not slide is called a pallet.

Definition of metal cans

    Iron cans Metal cans are various metal containers or metal crafts made from related sheet metal for packaging. According to the row shape, it can be divided into round cans, square cans, special-shaped cans, handle cans, and heart-shaped cans. According to the molding process, it can be divided into two-piece cans and three-piece cans. According to the purpose, it can be divided into food cans, tea cans, medicine cans, daily necessities cans, chemical barrels, CD boxes, etc. Among them, the number of food cans is the largest, such as candy cans, biscuit cans, and beverage cans.

Metal cans are classified according to the manufacturing method; there are mainly three-piece cans and two-piece cans:

(1) Three-piece can

The application history of the three-piece can is nearly 200 years. Although it has been improved many times, its basic composition is still made of three metal sheets (mostly tinplate) of the can body, bottom and lid, hence the name "three-piece can" . The shape, size and manufacturing method of the bottom and lid of the ordinary three-piece can are exactly the same, and they are collectively referred to as the lid. There are two main sealing forms for the longitudinal seam of the can body: soldering and fusion welding. The former was used earlier, but due to the lead in the solder, it has been eliminated; the latter can avoid lead pollution, low energy consumption, and low material consumption. , But the production equipment is complicated.

Three-piece cans have good rigidity, can produce cans of various shapes, high material utilization, easy to change size, mature production technology, and many types of packaging products.

(2) Two-piece can

The two-piece jar was introduced in the middle of the 20th century. The whole packaging can is composed of two pieces, namely the can body and the can lid, so it is called a two-piece can. The can body of the two-piece can is made of a thin metal plate, which is stretched and deformed by a punch through a stretch forming die, so that the can bottom and can body are connected into one body.

There are many kinds of can body classifications of two-piece cans: according to the height of the can body, there are shallow flushing cans and deep flushing cans; according to canning materials, aluminum cans and iron cans; according to manufacturing technology, thinning and stretching cans and deep cans Chong pull cupping and so on. Compared with the three-piece can, the two-piece can has the following advantages:

①Good airtightness. The can body is directly formed by the punching process, no leakage, and the leak detection process can be avoided.

②Ensure product quality. The two-piece cans do not need to be welded and sealed to avoid lead contamination of the solder cans, and are resistant to high temperature sterilization, which can ensure product hygiene.

③Beautiful and generous. The can body has no seams and beautiful appearance, and the can body can be continuously decorated and printed with good effect.

④ High production efficiency. The two-piece can has only two parts, and the can body manufacturing process is simple, which is of great benefit to simplifying the process and improving the production capacity.

⑤Save raw materials. The body of the two-piece can is stretched and deformed when it is formed, and the wall thickness is thinner than that of the three-piece can; in addition, the body of the two-piece can is integrally formed without the longitudinal seam of the can body and the seam with the bottom of the can, which also saves material .

However, two-piece cans have higher requirements on material performance, can-making technology, can-making equipment, etc., and there are fewer types of filling materials.