소성∙가공 (Transactions of Materials Processing)

  • 제20권3호
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  • Pages.250-256
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  • 2011
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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열진공성형 공형조건이 적층필름의 두께분포에 미치는 영향

Effects of Processing Conditions on Thickness Distribution for a Laminated Film during Vacuum-Assisted Thermoforming

  • 유영길 (충주대학교 대학원) ;
  • 이호상 (충주대학교 항공기계설계학과)
  • 투고 : 2011.03.21
  • 심사 : 2011.05.03
  • 발행 : 2011.06.01
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초록

Vacuum-assisted thermoforming is one of the critical steps for the successful application of film insert molding(FIM) to parts of complex shapes. If the thickness distribution of the formed film is non-uniform, cracking, deformation, warping, and wrinkling can easily occur at the injection molding stage. In this study, the effects of processing parameters, which include the film heating time, plug depth, plug speed and vacuum delay time, on film thickness distribution were investigated. It was found that the film thickness at the part sidewall decreases with increasing the film heating time and plug depth, but the thickness at the bottom was found to exhibit the opposite behavior. The film thickness of the sidewall was observed to increase at higher plug speed and vacuum delay time of 0 ~ 0.3sec.

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과제정보

연구 과제 주관 기관 : 한국연구재단

참고문헌

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피인용 문헌

  1. A Study on Tensile Behavior of Transparent Polycarbonate (PC) Plate in the High Temperature vol.31, pp.1, 2014, https://doi.org/10.7736/KSPE.2014.31.1.21
  2. Numerical and Experimental Analysis of Laminated-Film Thickness Variation in Vacuum-Assisted Thermoforming vol.22, pp.3, 2013, https://doi.org/10.5228/KSTP.2013.22.3.171
  3. Effect of Thickness Change in Corrugations on the Stiffness and Vibration Characteristics of a Thermoformed Diaphragm vol.23, pp.1, 2014, https://doi.org/10.5228/KSTP.2014.23.1.10
  4. Bubble assisted vacuum thermoforming: considerations to extend the use of in-situ stereo-DIC measurements to stretching of sagged thermoplastic sheets pp.1960-6214, 2019, https://doi.org/10.1007/s12289-018-01467-y