非吸水性の紙及び板紙が一定時間水に接触した場合の吸水度を評価する試験。規定された条件下において、紙又は板紙に吸収された水の質量を1m四方当たりに換算して吸水度(コッブ値)を算出する。
非吸水性の紙及び板紙が一定時間水に接触した場合の吸水度を評価する試験。規定された条件下において、紙又は板紙に吸収された水の質量を1m四方当たりに換算して吸水度(コッブ値)を算出する。
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