Roll hardness profile is an important property of parent reels and customer rolls. A correct winding process can be monitored throughout a roll...

Roll hardness profile is an important property of parent reels and customer rolls. A correct winding process can be monitored throughout a roll hardness profile measurement and leads to a roll of a high quality

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• If the roll is too soft, especially in the center, there will be handling damages such as starring and out-of-roundness. Additionally, there can be crepe wrinkles or telescoping.
• If the roll is too hard there can be bagginess and bursts.
• Too soft or too hard rolls tolerate less roll hardness variation than rolls with optimum hardness. There is always some (CD, Cross Direction) profile variation in the hardness, and it is important to find the optimum average hardness level to avoid roll broke.