前臺灣的精密模具和塑膠射出產業，面臨產品的多變性和產品開發時程短之要求，且對有些新產品較無經驗，故如何於有限的時間內達到廠商所要求的品質是一重要的議題。隨者應用電腦輔助工程分析(Comouter-Aided Engineering)技術之成熟穩定，提升產業的競爭力和減少現場試模之時間和成本。
本研究之目的應用模流分析軟體於塑膠齒輪射出成型產品設計和模具開發方面，方面尋求於事先發現設計之與對策予以解決，並利用軟體觀察許多微觀現象，例如：流道不平衡、噴流效應、結合線、收縮翹曲、3D纖維排向、噴流現象…等等，尋求對策縮短產品上市日時程，再以田口法找出射出成型的最佳條件，進而產生更多價值，提高在同產業的競爭力。

At present,molds and plastic injection industry, faced with product variability and short-term product development, since some products do not come into contact with previous experience relatively weaker, how to achieve quality manufacturers is very important for a limited time, with the person computer-aided engineering analysis (Comouter-Aided Engineering) technology is mature and stable,to enhance the competitiveness of the industry and reduce the time and cost of field tryout.
Objective mold flow analysis software of this study in the plastic gear product design and mold development, design flaws in previously discovered and removed, while taking advantage of the software to see many microscopic phenomena, such as: runner imbalance, jet effect, combined with the line, shrink warp , 3D fiber row direction, the jet phenomenon ... etc., shorten product launch date and time, then the injection molding Taguchi method to find the best price conditions, and produce more value, improve competitiveness in the same industry.

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