Home xin Why do bags bulge during vacuum packaging.

Why do bags bulge during vacuum packaging.

by admin
0 comment

bag bulging will not occur in vacuum packaging. If this phenomenon occurs, it indicates that the vacuum degree of packaging is not enough,

this is normal
at the beginning of vacuum pumping, the air in the working room is pumped, resulting in negative pressure in the working room. Due to the pressure of the seal, the air in the packaging bag is slowly evacuated. At this time, it will show positive pressure expansion and bulge. When the air in the packaging bag is also evacuated, it will shrink
vacuum packaging, also known as decompression packaging, is to extract and seal all the air in the packaging container to maintain a high decompression state in the bag. The scarcity of air is equivalent to the effect of low oxygen, so that microorganisms have no living conditions, so as to achieve the purpose of fresh fruits and no disease and rot. At present, there are vacuum packaging in plastic bags, aluminum foil packaging, glassware, plastic and composite packaging, etc. Packaging materials can be selected according to the type of articles. As fruits are fresh food, they are still breathing, and high hypoxia will cause physiological diseases. Therefore, less fruits use vacuum packaging.

go to Baidu app to view
Answer

 Hello, I'm glad to answer for you. Please wait a moment and I'm sorting out the answers for you ~ 

Ask questions

 OK, thank you 

Answer

 this is normal

 vacuumize at the beginning. The air in the working room is vacuumized, resulting in negative pressure in the working room. The air in the packaging bag will expand and bulge under positive pressure due to the pressure of the seal. When the air in the packaging bag is vacuumized, it will shrink

 vacuum packaging, also known as decompression packaging, is to extract and seal all the air in the packaging container to maintain a high decompression state in the bag. The lack of air is equivalent to the effect of low oxygen, so that microorganisms have no living conditions, so as to achieve the purpose of fresh fruits and no disease and rot. At present, there are vacuum packaging in plastic bags, aluminum foil packaging, glassware, plastic and composite packaging, etc. Packaging materials can be selected according to the type of articles. As fruits are fresh food, they are still breathing, and high hypoxia will cause physiological diseases. Therefore, less fruits use vacuum packaging 

 I hope my answer is helpful to you ~ I wish you a happy life

Ask

 mainly about how to deal with the bag running 

Answer

 wait a minute, I'm sorting out the answers for you ~ 

 generally, the vacuum machine has a bag pressing rod to ensure that the bag does not run. Generally, the bag is not long enough. When the vacuum chamber generates negative pressure, the bag will bulge, and the bag is easy to run. It is suggested that a longer bag can solve this problem. No bag pressing rod also affects 

Ask

 the bag is long enough and the bag pressing rod is normal. Is the pressing strip too tight or too loose

Answer

 there are these factors, 

Question

 OK, thank you 

Answer

 you're welcome ~ kiss 

11 more

the reason is that the air extraction in the vacuum bag is slower than that in the vacuum chamber, and the pressure in the vacuum chamber is smaller than that in the vacuum bag

1. The air inside expands under high temperature
2. Gas is produced by chemical reaction.

You may also like

Leave a Comment