Manufacturer: How long does it take for plastic bottles to cool down?

   A variety of blow-molded products can be completed using a blow molding machine, because they are blown out using a blow molding machine, referred to as blow-molded products. Blow molded products are widely used and have many requirements. Among them, the cooling time of blow molded products is very important, which will directly affect the quality and appearance of finished products. Today, the editor of Yankang is here to talk to you about the cooling time of blow molding products!

Generally speaking, the cooling time of blow molded products is longer. It takes one third to two thirds of the molding cycle.

The cooling time of blow molded products is also related to the raw materials. Some are long and some are short. Under the same process parameters, PE (polyethylene) cooling time is longer than PP (polypropylene). Because the material of the blow-molded product is plastic, the cooling time is insufficient, and deformation will occur. If you have any product deformation, it may be the reason for the cooling time of blow molded products!

Have you ever seen an oversized water tank? For example, this ultra-large blow molded product must be different from the cooling time of a few hundred liters! The cooling time of blow molded products is greatly related to the size, shape, volume, number of layers and wall thickness of blow molded products. The larger the product, the longer the cooling time.

The cooling of blow-molded products is also related to blow-molding molds. The materials used in the molds of each manufacturer are different. The thermal conductivity, mold exhaust system, and sandwich structure are different. Mold temperature and temperature control accuracy are also related to cooling time. And the inflation pressure and air volume, the temperature of the cooling port, the temperature of the cooling water, etc.

There are many factors, and here are the factors listed above, you can find the reasons.

When the hollow blow molding machine performs blow molding, the time for inflating the product is synchronized with the cooling time. There will be a deflation time, but it is very short and can be ignored, so the inflation time is about the same as the cooling time of the blown product. What happens if the cooling time of blow molded products is not controlled? If the product is deformed or appears thick and thin, the quality will also deteriorate.

Therefore, it is important to control the cooling time of blow molded products. In addition to this, mastering the cooling time is also an aspect that everyone should pay attention to.

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