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Why can’t the vacuum packaging machine seal its mouth

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It may be that the sealing time is too short, or the quality of the vacuum bag is poor, or there is a problem with the heating cloth of the sealing strip. When something is hot, it emits gas. When sealing, the sealing machine needs to extract the carbon dioxide inside. The hot food needs to stop generating gas after cooling, so it can’t be sealed
Consultation record · answer: on November 8, 2021, the reason why the vacuum packaging machine cannot seal may be that the sealing time is too short, or the quality of the vacuum bag is poor, or there is a problem with the heating cloth of the sealing strip. When things are hot, they emit gas. When sealing, the sealing machine needs to extract the carbon dioxide inside. The hot food needs to be cooled before it stops generating gas, so it can’t be sealed during sealing
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Answer

 supporting equipment 

 packaging industry knowledge 

 how to deal with non sealing of vacuum packaging machine 

 the whole working cycle of the vacuum packaging machine is divided into four stages: vacuum pumping, heating, cooling and bleeding. Any problem in any of these four links will seriously affect the effect of vacuum packaging. For the phenomenon that the vacuum packaging machine does not seal, it is mainly caused by the two links of heating and cooling. Here are the reasons and solutions for the unsealing of the vacuum packaging machine: 

 1. The heating temperature is not enough. Users often ask the same question: how long is the heating time of the vacuum packaging machine appropriate? In fact, there is no standard answer to this question, which needs to be adjusted according to the bag used by the user. If the user's bag is thicker, the heating time is naturally longer, the bag is thinner, and the heating time is shorter. Generally, the standard vacuum packaging bag is 7-8 silk thick, and the heating time is 2 seconds

 2. Insufficient cooling time. The bag will melt instantly after heating, but there is no bonding after melting, but it needs to be cooled before bonding can be realized. At this time, if the cooling time is short, the sealing will not be sealed. How to judge whether the cooling time is not enough? It mainly depends on the seal of the bag. If there are signs of scalding, but there is no bonding, it means that the cooling time is not enough

 3. There is oil stain at the mouth of the bag. This situation is also very common, but it is often ignored by users. Some users use vacuum packaging machine to pack meat or fried food, but there is no special treatment when bagging, so that the mouth of the bag is contaminated with bad oil during the process of bagging, and it will not be sealed when sealing. General users should choose funnel packaging if packaging the above products, so as to avoid this situation

 I hope my answer is helpful to you 

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