What are the control details of
Bag Making Machine?
In the production process of bag making machine, it is necessary for us to strictly control the heat sealing temperature. How to control it? Next, according to xiaobian, investigate the method of controlling the heat sealing temperature of the bag machine.
Bag making machine in the process of bag making, all need a heat sealing temperature, reasonable heat sealing temperature is conducive to production and manufacturing, its role is to make the adhesive film layer heated to a more ideal viscous flow state. In the selection of heat sealing temperature, the demand is based on the characteristics of heat sealing material, the thickness of the film, the number of hot sealing pressing, the size of the heat sealing area, etc. If you agree to add the number of hot pressing parts, the temperature can be appropriately lowered. If the heat sealing area increases, the heat sealing temperature can be adjusted higher.
Here let's take PVC plastic, PVC plastic is an amorphous polymer, there is no fixed melting point, so there is only a melting temperature scale, that is, a temperature region between the solid and liquid phase, when heated to this temperature scale, the film will enter the melting state. The upper and lower limits of the temperature scale are separated to represent the differentiation temperature and viscous flow temperature of PVC. The size of the difference between them is the key to determine the degree of difficulty of heat sealing
In the process of bag making, the heat sealing strength is affected by the heat sealing temperature. The higher the heat sealing temperature is, the heat sealing strength will be added, but when it reaches a certain temperature, the heat sealing strength will not change any more. When the heat sealing temperature is too high in the process of bag making, the heat sealing material at the welding place will be damaged, and the heat sealing strength of the seal and the impact resistance of the bag will be reduced. Therefore, the heat sealing temperature should be higher than the melting temperature of the heat sealing material, and the temperature should not be too high.
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