There are two main production methods for plastic packaging bottles, extrusion blow molding and injection blow molding. The main injection molding technology for plastic packaging bottles is that in the process of injection molding, the main molds used for molding plastic bottles include two types: female mold and male mold. Use an injection molding machine to inject plastic melt into the cavity of the mold under high pressure. When the mold cavity is opened, it is necessary to remove the male mold from the female mold and eject the bottle body. The following first introduces the characteristics of injection blow molding of plastic packaging bottles.

1. The melt of the plastic packaging bottle is injected into the parison mold, and the corresponding orientation effect is experienced around the inside of the cavity. In addition, the ambient temperature of parison blow molding is lower than that of extrusion blow molding, and the orientation effect generated during the blow molding process can be preserved a lot. This phenomenon can improve the overall strength of the plastic packaging bottle, etc. function.

2. The standard size of the plastic packaging bottle is accurate and high-precision, and the thickness of the plastic bottle wall is uniform and the standard is the same according to the production requirements.

3. The surface of the plastic packaging bottle will not form a joint seam, and it does not need to be trimmed after molding. Under normal circumstances, there will be no leftover material in the corner, and the leftover material produced by extrusion blow molding is generally 5-30%. The gloss of plastic packaging bottles is relatively high, and the transparency of plastic packaging bottles produced by transparent polymers is higher.

4. A sliding bottom module can be designed on the blow mold of the plastic packaging bottle, so the flexible function of the shape design of the bottom surface of the plastic packaging is relatively large. It is more suitable for the production of molded printed plastic bottles and wide-mouth plastic bottles.

5. Under normal circumstances, most of the plastic packaging bottles using injection blow molding are plastic bottles with relatively small volumes. For products with very complex molding shapes, the speed of energy consumption will increase significantly.

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