Improvement of moldability for ultra thin-wall molding with micro-patterns

Oh Kyung Kwon; Jae Ho Yun; Keun Park

doi:10.3795/ksme-a.2007.31.5.556

Improvement of moldability for ultra thin-wall molding with micro-patterns

Oh Kyung Kwon
, Jae Ho Yun
, Keun Park

Dept. of Mechanical System and Design Engineering

Seoul National University of Science and Technology (SNUST)

Research output: Contribution to journal › Article › peer-review

Abstract

The rapid thermal response(RTR) molding is a novel process developed to false the temperature of mold surface rapidly in the injection stage and then cool rapidly to the ejection temperature by air or water. The objectives of this paper are to investigate the effect of mold temperature, pressure and thickness of micro pattern molding and to provide a optimization of RTR injection molding for micro pattern from Moldflow simulation. Optimal minimum temperature and pressure was found without shortcut according to thickness. Filling percentage was influenced by glass transition temperature with the kinds of resin. Optimal temperature is slightly higher than glass transition temperature irrespectively of pressure, thickness, the kinds of resin in the micro pattern molding.

Original language	English
Pages (from-to)	556-561
Number of pages	6
Journal	Transactions of the Korean Society of Mechanical Engineers, A
Volume	31
Issue number	5
DOIs	https://doi.org/10.3795/ksme-a.2007.31.5.556
State	Published - May 2007

Keywords

Flow simulation
Injection molding
Micro pattern
Mold heating
Thin wall molding

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10.3795/ksme-a.2007.31.5.556

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abstract = "The rapid thermal response(RTR) molding is a novel process developed to false the temperature of mold surface rapidly in the injection stage and then cool rapidly to the ejection temperature by air or water. The objectives of this paper are to investigate the effect of mold temperature, pressure and thickness of micro pattern molding and to provide a optimization of RTR injection molding for micro pattern from Moldflow simulation. Optimal minimum temperature and pressure was found without shortcut according to thickness. Filling percentage was influenced by glass transition temperature with the kinds of resin. Optimal temperature is slightly higher than glass transition temperature irrespectively of pressure, thickness, the kinds of resin in the micro pattern molding.",

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AU - Yun, Jae Ho

AU - Park, Keun

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N2 - The rapid thermal response(RTR) molding is a novel process developed to false the temperature of mold surface rapidly in the injection stage and then cool rapidly to the ejection temperature by air or water. The objectives of this paper are to investigate the effect of mold temperature, pressure and thickness of micro pattern molding and to provide a optimization of RTR injection molding for micro pattern from Moldflow simulation. Optimal minimum temperature and pressure was found without shortcut according to thickness. Filling percentage was influenced by glass transition temperature with the kinds of resin. Optimal temperature is slightly higher than glass transition temperature irrespectively of pressure, thickness, the kinds of resin in the micro pattern molding.

AB - The rapid thermal response(RTR) molding is a novel process developed to false the temperature of mold surface rapidly in the injection stage and then cool rapidly to the ejection temperature by air or water. The objectives of this paper are to investigate the effect of mold temperature, pressure and thickness of micro pattern molding and to provide a optimization of RTR injection molding for micro pattern from Moldflow simulation. Optimal minimum temperature and pressure was found without shortcut according to thickness. Filling percentage was influenced by glass transition temperature with the kinds of resin. Optimal temperature is slightly higher than glass transition temperature irrespectively of pressure, thickness, the kinds of resin in the micro pattern molding.

KW - Flow simulation

KW - Injection molding

KW - Micro pattern

KW - Mold heating

KW - Thin wall molding

UR - https://www.scopus.com/pages/publications/34249891886

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VL - 31

SP - 556

EP - 561

JO - Transactions of the Korean Society of Mechanical Engineers, A

JF - Transactions of the Korean Society of Mechanical Engineers, A

IS - 5

ER -

Improvement of moldability for ultra thin-wall molding with micro-patterns

Abstract

Keywords

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