The most important thing to realise is that a mould tool is made from two halves that need to pull apart, and the part needs to be able to be released from the tool which is quite simple but massive. So there might needed to make a few changes to the cavity parts or decided on a different manufacturing technique. The report also investigates the fact that the analysis conducted has limitations where the restriction regards to part design in injection molding. Lastly, explained the factors that influence the quality of the products. The major areas that can be improved are reducing mould problem throughout the process as well as to reduce the problem performance. The report finds that the current position of quality products in this company are quite good but there is still can be improve so that a better products can be formed along with a low cost needed. All the details about the process are being explained in the discussion later based on the diagrams shown. In addition, there are flow diagram and piping and instrumentation diagram (PNID) done in order to make the process crystal clear. All calculations and formulas are shown in the result and discussion. Other calculations include overall mass balance of the raw material and the products, the heat absorbed and lost during the process, work input and output by calculating the machines' efficiency and lastly the overall energy balance in the injection molding process. Mainly, the method of analysis of the balances is in spreadsheet programming. Therefore, this company has been reducing the demands of thermoplastic goods around Sarawak.This report provides an analysis and evaluation of the mass and energy balance on injection molding process in this factory, which is located at Kuching, Sarawak. What benefits can be obtained from this company towards civilization? The major benefits is the production of good quality of preform plastic bottles which then are being sends to other oil company all over Sarawak. Basically, injection molding process is a process where the plastic granules or pellets are being melted down and shaped and being cooled down through plasticisation process. In order to have this product, there must be an injection molding process. One of them is a preform PET bottle production factory, a small factory in Kuching. Hence, there is thousands of company that has been running a business on this product around the world. The demanding of thermoplastics as consumer goods have increasingly high since a decade ago due to its capability that is better than glass.
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