Evaluation of Fall Crash Strength for the Foundation of Cosmetic Powder Compacts(<Special Issue>M & P 2009 The 9th Materials and Processing Conference)

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  • 化粧品圧粉体ファンデーションの落下強度の評価(<小特集>M&P2009機械材料・材料加工部門技術講演会)
  • 化粧品圧粉体ファンデーションの落下強度の評価
  • ケショウヒン アップンタイ ファンデーション ノ ラッカ キョウド ノ ヒョウカ

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Abstract

The foundation is cosmetic powder compacts. An accident such as the fracture occurs, if it drops during using or carrying. In this study, the powder compact of foundation was molded under various conditions with the automatic servo press machine which we developed. Fall tests of the foundation were conducted for various times (n) from various heights (h) and then the fracture behaviors were examined. Several fracture patterns were observed such as surface crack, internal crack, flaking of surface layer and disintegration when the foundation was subjected to relatively high impact force. These fractures become more remarkable as the powder compact becomes harder.

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