Intensive Course: Fundamentals of Injection Moulding 1 (sgt1) Basic Training
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Parts designers, mould designers, mould makers, machine operators, plastic moulder, QA personnel, personnel work scheduling, shift foreman, purchasing and sales
No, it is advantageous if one knows the end of an injection moulding production.
Structure and processing of plastics • thermoplastics, thermosets, elastomers. Assessment of trade names • material data, processing data - thermoplastic elastomers - advantages of TPE with elastomers • properties of plastics, especially of thermoplastics, the influence of moisture during processing • Why must be dried, how to dry right. Functional sequence of the injection moulding machine, Advantages / disadvantages hydraulical and vullelectrical Injection moulding machines • How is a good material homogeneity achieved • melting process • Why is the back pressure important • how to define the injection rate. Why one has to inject in a source-flow • How to determine the holding time • How to determine the optimum cooling time • What must be considered during the injection process • PVT diagram • How to optimize surface defects • Closing force determination and calculation • Construction of an injection moulding tool • What is a three-plate mould, partial-hot- runner-tool, hot runner mould - how to identify errors at injection moulded parts- sink marks, weld line, gloss differences • moisture and burn marks • Sticking etc. Many mistakes on plastic parts will be discussed.
The participants get the knowledge of plastics, thermoplastics, injection moulding machines, tool and process engineering knowledge, injection moulding defects are discussed.