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J. Ehritt


Multi-component injection moulding of glass-reinforced materials


Polimery 1988, No 7-8, 308


DOI: dx.doi.org/10.14314/polimery.1988.308

Summary

The multi-component injection moulding process consists In a subsequent injection of a monolithic (solid) and a cellular material is such a way that the final product is composed of a cellular core and a solid skin. The improved technique of two-component moulding developed bv Battenfeld, F.R.G., with the use of a two-channel injection nozzle in which two mutually independent and phase-shifted valves supply two types of material. The advantages of such a solution have been presented. It Is possible in this, method to obtain mouldings composed either of reinforced skin and non-reinforced core or of non-reinforced skind and reinforced core. The design of injection moulding machines, moulds and sprue systems used in the two-component injection moulding process has been discussed.



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