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Gas assisted injection molding is required a nitrogen supplying device to control gas for molding. This injection technology is applied that gas being into the mold after plasticized melt fill up. It is a technology that has various advantages such as reduce the material cost as well as improvement in product quality and productivity. Furthermore, sink mark could be removed out, cycle time is reduced, and strength has improved through this technology. Gas assisted injection molding has many advantages as aforementioned but should consider to jetting prior to actual application in process. Also, corrected mold construction in mold manufacturing process in order to prevent from occur fingering phenomenon. This is enable to reduces mechanical strength and cause of bad surface on products. This study purpose is to get to the root cause of fingering phenomenon. Melt temperature and mold temperature are very important factors at gas assisted injection molding. Gas pressure is influenced by temperature. Using gas assisted injection molding processing method, we can expect to improve process and greatly helpful for correction of mold in the field.

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1. 서론
2. 실험 방법
3. 고찰
4. 결론
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