Due to the development of the industry, the importance of injection molded products is increasing in the fields of electricity, electricity, automobiles, etc. Through this experiment, the weight change of molded products according to the injection speed change during injection molding was investigated. As a result of the experiment, a statistical program was used to confirm that the pi control method produced about 69.2% more weight deviation than the dpi method and to adopt the null hypothesis that the p-value was less than 0.05 Injection speed affected the molded product.

ABSTRACT
1. 서 론
2. 실험장치 및 실험
3. 결과 및 고찰
4. 결 론
References

• 이선종(department of Semiconductor electrical system of Semiconductor convergence Korea Polytechnic) | Sun-Jong Lee Corresponding Author