From the 1950 s to the mid - 80 - s is a stage in the development of machine, the period starts from the manufacturing simple pump.
Take out of air inside the bag, to the expected after vacuum degree, complete sealing process.
Is used widely in food industry, vacuum packaging, all kinds of cooked products, such as chicken, ham, sausages, grilled fillet, beef jerky, etc;
Pickled products such as all kinds of pickled vegetables and soy products, dried fruit, etc are used more and more various need fresh food vacuum packaging.
After vacuum packaging of food freshness long, greatly extend the shelf life of food.
The domestic manufacturer of vacuum
packaging machine is less than 20, the main products are medium vacuum equipment.
By 1996, due to the pull of magnesium smelting industry, vacuum
packaging machine industry has been rapid development.
After all, vacuum packaging machine is how to produce?
Today, the editor will be with you and have a look.
in the first place, we have to look at what is vacuum.
A kind of heat pumping air into vacuum state, sealing, cooling the one-time completed function, apply to food, aquatic products, chemical raw materials, electronic components, precision parts and other products of vacuum sealing, can prevent oxidation, mildew, corrosion, moisture, but also extend the product with good quality fresh storage life of the machine.
Vacuum is in a given space, the state is lower than the atmospheric pressure of the gas of a physical phenomenon.
In & other;
Empty & throughout;
, because there is no medium, the sound can not spread, but the transmission of electromagnetic wave is not affected by vacuum.
In fact, in vacuum, the vacuum system is aimed at the atmosphere, part of the material in a specific space is expelled, the pressure is lower than the standard atmospheric pressure, so we usually call this space vacuum or vacuum.
Vacuum with PASCAL (usually
Pascal)
Or thor (
Torr)
As the pressure unit.
In the natural environment, only the outer space is closest to the vacuum of space.
vacuum packaging machine is using vacuum principle, also say the vacuum pump use this principle to implement the vacuum packaging of the product.
This can prolong the shelf life of food, prevent food spoilage.
Or a lot of fear of being oxidized parts vacuum packaging machine can also be used to vacuum packing.
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