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Language: English French Portuguese
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Wet Pressing Series (Details)Includes 7 courses for $299/year. Paper Library (Details)Includes 95 courses for $1,499/year.
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Training Time: 9 minutes
Compatibility: Desktop, Tablet, Phone
Based on: Industry Standards and Best Practices
Languages: English, Portuguese, French
The felt guiding system is responsible for keeping the press felt centered on the rolls in its felt run. The felt tensioning system is responsible for maintaining a constant, uniform tension in the felt. This module will provide you with a better understanding of how felt tensioning and guiding systems are operated and their value to an effective wet pressing operation.
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The following key questions are answered in this module:
Why is it important for press felts to be centered on the machine?To completely cover the sheet width to ensure uniform water removal in the press nips. Also, to keep the felts from running off the front or back of the machine.
What is the basic principle of fabric guiding?The basic principle of fabric guiding is that the felt moves or "steers" toward the roll end that it contacts first.
By what mechanism does the movement of the guide palm cause the autoguide to move?The guide palm movement closes or opens a bleed air valve, which increases or decreases the air supply pressure to an air bag which moves the autoguide end of the guide roll.
What is the purpose of the hand guide or manual guide?Its purpose is to keep the autoguide end centered in its travel. This ensures that the autoguide always has some adjustment available in both directions.
What is the recommended roll wrap (in degrees) for a felt guide roll?Guide rolls need to have a roll wrap of 25 to 35 degrees to ensure sufficient friction for the roll to move the felt.
Below is a transcript of the video sample provided for this module:
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