Mold Gate System and Volume Expansion of Microcellular Foaming Technology.
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概要
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Microcellular technology is an advanced foaming technique which uses inert gas as a foaming agent and brings many merits such as improved impact strength and toughness. Microcellular foaming was developed as a batch process but unfortunately, the time required for foaming is too long. Extrusion and injection molding are under development so that microcellular foaming may be profitably used in industry. In our research, we designed a controllable ratio of flow length to cavity thickness L/t mold for microcellular foaming and measured volume expansion as a function of L/t. We obtained uniformly distributed microcells about 30μm in size and observed 30.1% volume expansion for L/t=20. Volume expansion data are necessary for designing a mold system that is proper for microcellular foam moldng.
- 一般社団法人 プラスチック成形加工学会の論文
一般社団法人 プラスチック成形加工学会 | 論文
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