Creasing corrugated board
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United States of America Patent
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app pub date -
Feb 8, 2016
filing date -
Feb 8, 2016
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Abstract
Corrugated boards are creased in three stages: the first being controlled crushing of the board to force air out of the flutes; the second is applying heated moisture or mist to the board to increase pliability; and the third is creasing the board by passing it between endless conveyor belts one of which has an elongated scoring bead projecting from its inner surface.
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