New Approach to Evaluate the Lubrication Process in Various Granule Filling Levels and Rotating Mixer Sizes Using a Thermal Effusivity Sensor
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- Uchiyama Jumpei
- Japan Technology, Global Demand Chain Technology, New Chemical Entity Demand Chain Unit, Eisai Demand Chain Systems, Eisai Co., Ltd.
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- Aoki Shigeru
- Japan Technology, Global Demand Chain Technology, New Chemical Entity Demand Chain Unit, Eisai Demand Chain Systems, Eisai Co., Ltd.
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- Uemoto Yoshifumi
- Global Formulation Japan Pharmaceutical Science Technology, Eisai Co., Ltd.
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抄録
The principles of thermal effusivity are applied to an understanding of the detailed mechanisms of the lubrication process in a rotating mixer. The relationships and impact of the lubrication process by the pattern of powder flow, the filling level, and the rotating mixer size were investigated. Thermal effusivity profiles of the lubrication process, as obtained, indicate that lubrication is a two-phase process. The intersection point of the first and second phases (IPFS) is influenced by changing the filling level, thus changing the resulting number of avalanche flows created. The slope of the second phase (SSP) is influenced by the relationship between the number and the length of avalanche flows. Understanding this difference between the first and second phases is important to successfully evaluate the impact of proposed changes in the lubrication process. From this knowledge, a predictive model of the lubrication profile can be generated to allow an evaluation of proposed changes to the lubrication process. This model allows estimation of the lubrication profile at different filling levels and in different rotating mixer sizes. In this study, the actual lubrication profile almost coincides with the model predicted lubrication profile. Based on these findings, it is assumed that lubrication profiles at a commercial scale can be predicted from data generated at the laboratory scale. Further, it is assumed that changes in the filling level can also be estimated from the laboratory or current data.
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 63 (3), 164-179, 2015
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390001204176608512
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- NII論文ID
- 130004803781
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- NII書誌ID
- AA00602100
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- ISSN
- 13475223
- 00092363
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- NDL書誌ID
- 026193071
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- PubMed
- 25757487
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可