Use caution vacuum packaging machine heat sealing

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many food companies based on the situation of their own products, hot food is generally require cooled to room temperature for packaging. But such heat sealing, relatively much clutter, such as vacuum packaging machine is also needs special structure to be able to heat sealing products. So, vacuum packaging machine heat sealing used to pay attention to? Today to tell you!

according to the theory, with a higher thermal vacuum degree of vacuum, thermal packaging total number of colonies simple control ( Subsequent sterilization completely, there is no advantage) But depends on the product type, for example, do some dumplings, all is the requirement of cold packaging, mainly cold water content of packaging to cut rice dumplings. Other products also should according to the characteristics of the product to choose, generally most of the products is still the normal packing, because it is difficult to operation, thermal packaging process basic measured now still is to rely on craft is in the bag. After high temperature vacuum packaging vacuum degree of vacuum is not normal temperature is high, the relatively simple air leakage.

so hot sealing products will have an impact on conventional vacuum packaging machine vacuum pump? Due to the thermal vacuum will take a lot of water vapor, if choose vacuum equipment is oil seal, that a lot of water into the vacuum pump, vacuum pump oil and mix together, it is a simple overflow, the second is simple vacuum pump oil.

normal temperature food is the principle of vacuum packing: because food mildew rot transformation mainly formed by the activity of microorganism, and most microorganisms ( Such as mold and yeast) Livelihoods is oxygen demand, and the vacuum packing is using this principle, the bags in food and oxygen smoke inside the cell, lose micro physical & other; Living environment & throughout; 。 Tests showed that: when the concentration of oxygen in the packaging & le; 1%, microbial growth and reproduction rate fell sharply, oxygen concentration & le; 0. 5%, the most microbes will end by inhibition of reproduction. ( Note: vacuum packing can inhibit anaerobic bacteria reproduction and enzyme reaction caused by food change and change color, so still need to combine with other adjuvant methods, such as cold storage, frozen, dehydrated, high-temperature sterilization, irradiation sterilization, microwave sterilization, salting, and so on. )

on the basis of your own product requirements so we should choose suitable vacuum packaging machine.

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