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A Study on manufacturing of Injection Mold and Delivery System Characteristics of Cosmic case

화장품 용기의 유동 특성 및 사출금형 제작에 관한 연구

  • Choi, Jae-Hoon (Department of Tool & Mold Engineering, Yuhan University)
  • 최재훈 (유한대학교 금형설계과)
  • Received : 2013.08.26
  • Accepted : 2013.12.05
  • Published : 2013.12.31

Abstract

A cosmetic manufacturing process requires a mold that is inevitable for mass production. Cosmetic containers are one of major factors affecting the customer's purchase decision. In addition, the manufacturing cost in cosmetic container comprises a large portion of the entire product cost. Therefore, a mold satisfying the economical feasibility, aesthetics and functionality is necessary. Among the cosmetic containers, square shape containers have a tendency of having a short shot defect product. The square shaped cosmetic containers are mostly produced as a side gate shape on the two-plate molds. On the other hand, there are two disadvantages, such as gate trace and post processing requirement. The overlap-gateproposed in this study has the characteristics of intaglio gate cutting and no need for post processing. The delivery system of the overlap gate was simulated and compared with the side gate via Moldflow. The improvement in flow, frozen rate, density, and Air trap was confirmed. Based on the simulation results, the mold and performed injection molding was fabricated. In this study, the possibility of the mass production of high aesthetic and functionality cosmetic containers was verified.

Keywords

Air trap;Injection Mold;Frozen;Overlap gate;Short shot

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