Paper Machine Suction Rolls and Roll Covers
Though their design and construction are very similar, suction rolls perform several different functions on paper machines, depending on their position. They can be used to remove water from the sheet, transfer the sheet, improve dewatering in a press nip, dewater a felt, stabilize the sheet, or pull steam into the sheet. Roll cover selection should take into account the functions of the roll and the operating conditions.
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Learning Objectives
• Explain the purpose of suction rolls in the forming and press sections of a paper or board machine • Identify and describe the function of key components of a suction roll • Explain the importance of proper vacuum box and end deckle positioning in suction rolls • List the various types of roll cover materials and their typical applications • Explain the benefits of grooved and blind-drilled roll covers
Specs
Course Level | Intermediate |
Languages | English |
Compatibility | Audio, Video |
Course Applies To
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