生地の水蒸気の通しやすさを評価する試験の一つ。既定のカップに約40°Cの水を42ml入れて生地の試験片をセットする。規定の温湿度条件下で、1時間後とさらに1時間後に質量を測定し、生地を通して蒸発した水の質量から透湿度を算出する。
生地の水蒸気の通しやすさを評価する試験の一つ。既定のカップに約40°Cの水を42ml入れて生地の試験片をセットする。規定の温湿度条件下で、1時間後とさらに1時間後に質量を測定し、生地を通して蒸発した水の質量から透湿度を算出する。
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