Why can food tin cans keep food for a long time?

In order to prolong the shelf life of food, people have come up with many methods for thousands of years, such as smoking, sunshine, salting and so on. And canning technology is undoubtedly the youngest, it began in 1810. Canned food is a kind of packaged food which is processed from raw materials through the processes of modulation, canning, exhaust, canning and sterilization. Canned food is characterized by its delicious taste and convenience, and can be stored for a long time to mediate the season of food supply.

As we all know, meat, fish, fruits, vegetables and other foods contain a lot of water and nutrients, such as protein, fat, sugar and various vitamins. If these foods are contaminated with bacteria, they will multiply rapidly at a certain temperature and time, and eventually spoil the food. Some people think that food in cans can be stored for a long time. It must be preservative added. This understanding is wrong. That’s why we don’t know the process of making canned food.

When canned food is processed, good hygienic conditions should be ensured. Processing sites and tools must be cleaned and disinfected strictly according to the regulations, so as to control the invasion of bacteria as far as possible in the process of processing raw materials. Generally, the canned food is processed with raw materials, seasoning and then put into the packaged tank which has been heated and sterilized, and then the air left in the tank is eliminated by heating exhaust or mechanical vacuum evacuation. Thus, the canned food can keep a certain vacuum. After exhausting and sealing, the cans were sterilized tightly. In this way, the food in the container is sterile, and the bacteria outside can’t get in, so the food can naturally be stored for a long time. If the raw materials are not properly handled, sealed and sterilized, in short, canned food is vulnerable to bacterial contamination and deterioration and can not be eaten due to any problems in the production process.

Now we know that canned food can be preserved for a long time without deterioration, thanks entirely to sealed food tin cans and strict sterilization, to achieve commercial aseptic requirements, without any preservatives. Usually, as long as the cans are kept in a cool and dry place, without rusting the cans or damaging the seals, canned food can be stored for a long time.

Food tin cans

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Application of Food tin cans

Food tin cans, widely used for packaging of pet food, candy, vegetables and fruits etc.

Various types of Food tin cans

Food tin cans

Qiming Food tin cans

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PET FOOD TIN CAN

Qiming Food tin cans

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pet food tin can

Qiming Bowl Shaped Food tin cans

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Qiming Bowl Shaped Food tin cans

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Specification

Model NO. of tin cans Material Capacity Thickness Size
628# Tinplate 70ml 0.18-0.22mm Diameter 65mm * Height 28mm
636#  (outer golden/inner white coating) Aluminum 80ml 0.18-0.22mm Diameter 63.5mm * Height 36mm
636# (outer golden/ inner original silver coating) Aluminum 80ml 0.18-0.22mm Diameter 63.5mm * Height 36mm
634# Aluminum 90ml 0.18-0.22mm Diameter 65mm * Height 34mm
634# Tinplate 90ml 0.18-0.22mm Diameter 65mm * Height 34mm
640# Tinplate 100ml 0.18-0.22mm Diameter 65mm * Height 40mm
728# Aluminum 90ml 0.18-0.22mm Diameter 73mm * Height 28mm
728# Tinplate 90ml 0.18-0.22mm Diameter 73mm * Height 28mm
730# Aluminum 95ml 0.18-0.22mm Diameter 73mm * Height 30mm
730# Tinplate 92ml 0.18-0.22mm Diameter 73mm * Height 30mm
732# Aluminum 100ml 0.18-0.22mm Diameter 73mm * Height 32mm
732# Tinplate 100ml 0.18-0.22mm Diameter 73mm * Height 32mm
840# Aluminum 170ml 0.18-0.22mm Diameter 83mm * Height 40mm
840# Tinplate 170ml 0.18-0.22mm Diameter 83mm * Height 40mm
842# Aluminum 180ml 0.18-0.22mm Diameter 83mm * Height 42mm
842# Tinplate 180ml 0.18-0.22mm Diameter 83mm * Height 44mm
846# (Laminated Steel technology) Tinplate 210ml 0.18-0.22mm Diameter 83mm * Height 46mm
846# (Enameled tinplate technology) Tinplate 210ml 0.18-0.22mm Diameter 83mm * Height 46mm
936# (bowl-shape) Aluminum 150ml 0.18-0.22mm Top Diameter 99mm * Height 36mm
936# (bowl-shape) Tinplate 150ml 0.18-0.22mm Top Diameter 99mm * Height 36mm
937# (bowl-shape) Aluminum 154ml 0.18-0.22mm Top Diameter 99mm * Height 37mm
937# (bowl-shape) Tinplate 154ml 0.18-0.22mm Top Diameter 99mm * Height 37mm
938# (bowl-shape) Aluminum 157ml 0.18-0.22mm Top Diameter 99mm * Height 38mm
938# (bowl-shape) Tinplate 157ml 0.18-0.22mm Top Diameter 99mm * Height 38mm
939# (bowl-shape) Aluminum 161ml 0.18-0.22mm Top Diameter 99mm * Height 39mm
939# (bowl-shape) Tinplate 161ml 0.18-0.22mm Top Diameter 99mm * Height 39mm
940# (bowl-shape) Aluminum 165ml 0.18-0.22mm Top Diameter 99mm * Height 40mm
940# (bowl-shape) Tinplate 165ml 0.18-0.22mm Top Diameter 99mm * Height 40mm

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