The equipment of three-sided bag making machine can produce bags of different specifications. These bags are widely used in the food and chemical industry. When making bags, appropriate temperature is needed to make them into shape. Does it have anything to do with bag-making materials?

In the process of bag-making, the three-side bag-sealing machine needs a heat sealing temperature, which is used to make the adhesive film heated to a relatively ideal viscous flow state. When selecting the heat sealing temperature, the characteristics of the heat sealing material, the thickness of the film, The Times of the heat sealing pressing, the size of the heat sealing area and so on should be considered comprehensively.

That is to say, if the same part of the hot pressing times increase, the temperature can be appropriately reduced; Jorge sealing area increase, adjustable high heat sealing temperature. The bag making material used by the three-side sealing machine is PVC plastic, which is an amorphous polymer, so there is no fixed melting point, only a melting temperature range, that is, a temperature region between the solid phase and the liquid phase.

When PVC plastic is heated to this temperature range by the three-sided bag sealing machine, the film will enter into the molten state, thus helping to shape the bag. At this time, the upper limit and the lower limit of the temperature range respectively represent the decomposition temperature and the viscous flow temperature of PVC, and the difference between them is the key to determine the 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 increase. However, when the temperature reaches a certain level, the heat sealing strength will not change. If the heat sealing temperature is too high, it will damage the heat sealing material at the welding place and reduce the heat sealing strength of the sealing and the impact resistance of the bag. So, the heat sealing temperature is higher than the melting temperature of the heat sealing material, and the temperature should not be too high.

Ruian Zhoutai Packaging Machinery Co., LTD specializes in manufacturing three-sided bag sealing machine, more related products please pay attention to the official website www.raztjx.com