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Technical development of multi layer coextrusion hollow plastic molding machine

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Technical development of multi layer coextrusion hollow plastic molding machine

Release date:2018-05-25 00:00 source: Click:

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Hollow blow molding machines, multi blow, high barrier hollow products, will be more and more in the proportion of hollow products. Multi layer blow molding products are not only developing rapidly in the food packaging industry, but also rapidly increasing in chemical, cosmetic, pharmaceutical, sanitary and other industrial packaging. Multi layer coextrusion hollow plastic molding machine is a weak link in the field of extrusion blow molding machine in china. The development of multi layer coextrusion hollow products promotes the development of multilayer coextrusion hollow plastic molding machine. Internationally, in recent years, multilayer extrusion hollow plastic molding machine development speed is very fast, and technical progress is also very fast. There are also some varieties launched in china. Research and development of key multilayer extrusion hollow plastic molding machine research has the following three points: (1) study of a range of CO extrusion head to meet different materials, different layers, head diameter requirements;

(2) study the combined packaging system, which can make a number of combinations that may be allowed according to different raw materials;

(3) study the basic mechanical program, which can be used in different number of molding stations and platform sizes including production speed and product design.

(4) multilayer co extrusion die head is multilayer co extrusion hollow plastic molding machine of the heart and brain, its performance should be able to: control to achieve the circumferential and lateral distribution of materials and perfect the best state of every layer is not affected by the material distribution and processing a wide variation of plastic materials and different extrusion amount. The spiral mandrel system is highly adaptive, with multi section structure up to seven layers. It meets the needs of special products and has the best processing conditions. It is the preferred system for multilayer coextrusion heads. Rheological design of multilayer coextrusion die design is the key, to be able to achieve the head doesn't depend on the productivity and material distribution of the viscosity of the raw material, has the function of automatic cleaning and high minimum amount of Cucheri good at low extrusion amount, good circle distribution in each layer, layer distribution of raw materials can, plastic raw materials, processing a wide range of different extrusion amount and different extrusion ratio. Large multi-layer co extruded hollow plastic molding machine adopts accumulator head, the structure is the host head in each layer of the nose, with a concentric annular piston, the head and the storage cavity are made into a whole, which can realize the high speed extrusion type embryo under low pressure.

(5) the adaptability and adaptability and combined extruding combined machine extruder is premise of guaranteeing quality of multi-layer co extruded hollow plastic products. Www.kautas.com


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