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How to seal food bags

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How to seal food bags

distinguish between food categories. Of course, there are generally two kinds:
1 Similar to the bread and snacks packed in the supermarket, this kind of common is the binding belt and mouth. But the shelf life of this kind of products is also relatively short, 5 ~ 7 days. Almost
2. The most common sealing of food packaging bags is heat sealing. Under the action of three factors, the heating rod (sometimes heated in the form of pulse), the bite force of the heating rod and the bite time of the heating rod, the heat sealable material inside the bag mouth is melted and then bonded. This form of heat sealing usually has better sealing performance.

there are also self sealing bags, which are packed by Shantou Weixin

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