AbstractThis project aims to reduce the production of waste pieces due to the injection of not full. (Short) Flat Top of plap are tested for possible causes and solutions not direct full team assembles the individual test ratings issued the order in which the cause is not full. By analyzing the elements in the process of forming of plastic Flat Top plap is divided into 4 elements is to set the parameters (Condition) raw materials (Materials) mold (Mold) and injection molding machine (Machine) from an analysis by the specified step 4 above, you can find hotel.Born from all parts, but if there is a problem in most cases, work on the piece. Why has the best cause in most cases work as much as possible is to set up the parameters (Condition) are tested by impurities mixed fresh ingredients (Virginal) compatible with fires, raw (raw cracked white Burns) together. Tested 6 times, it appears that the work piece is manufactured almost every dive spots; 2 reasons that cause black spots are the machines (Machine) test by removing the screw came out firing to cause. Roy Burns, and imported to assemble and test the gold piece was found to produce the first injection will be a piece broken out very good, and when you go through 10 hours. The percentage of occurrence of black spot begins to decrease noticeably. Due to the set up parameters (Condition) tested by adjusting the speed parameters of screw production pieces were broken out per hour approx. ...... and when speed reduction to lower concluded that with a grain of salt because the mold (Mold) is dirty clean the mold by cleaning and clearing after a proof-of-concept that results are not much different. Summary of problems that can cause black spots occur assembles the most work is raw materials (Materials) contain impurities.
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