TAPPI TIP 0404-57

TAPPI - TAPPI

Troubleshooting cross-machine direction moisture profile problems

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Year: 2010

Abstract: Poor cross-machine direction (CD) moisture profiles result in non-uniform paper end-use properties, converting problems, and poor runnability in the form of wrinkles and breaks. Fiber costs (such as heavy edges) and energy consumption can be higher than when moisture is more uniform.
Final moisture profiles reflect complex interactions between the forming, pressing, drying, and gauging and control systems. Many CD moisture profile problems originate in the press section, although they can also be caused by dry weight profile, forming, or drying problems.
This TIP discusses steps to take and tools available to troubleshoot CD profile problems. Steps to identify the source of the problem include:
1. Evaluate information from the machine gauging and CD control system.
2. Determine where poor profile originates.
3. Pinpoint the cause to get an effective solution.
Additional Technical Information Papers provide more information on troubleshooting issues in the forming (TIP 0502-14 "Forming section monitoring"), pressing (TIP 0404-19 "Press section monitoring"), and drying TIP (0404-33 "Dryer section performance monitoring") sections.

URI: http://yse.yabesh.ir/std;query=authoF23793FD69B749A/handle/yse/124218

Subject: Cross direction

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TAPPI - TAPPI

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contributor author	TAPPI - TAPPI
date accessioned	2017-09-04T17:00:47Z
date available	2017-09-04T17:00:47Z
date copyright	01/01/2010
date issued	2010
identifier other	XPKIRCAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std;query=authoF23793FD69B749A/handle/yse/124218
description abstract	Poor cross-machine direction (CD) moisture profiles result in non-uniform paper end-use properties, converting problems, and poor runnability in the form of wrinkles and breaks. Fiber costs (such as heavy edges) and energy consumption can be higher than when moisture is more uniform. Final moisture profiles reflect complex interactions between the forming, pressing, drying, and gauging and control systems. Many CD moisture profile problems originate in the press section, although they can also be caused by dry weight profile, forming, or drying problems. This TIP discusses steps to take and tools available to troubleshoot CD profile problems. Steps to identify the source of the problem include: 1. Evaluate information from the machine gauging and CD control system. 2. Determine where poor profile originates. 3. Pinpoint the cause to get an effective solution. Additional Technical Information Papers provide more information on troubleshooting issues in the forming (TIP 0502-14 "Forming section monitoring"), pressing (TIP 0404-19 "Press section monitoring"), and drying TIP (0404-33 "Dryer section performance monitoring") sections.
language	English
title	TAPPI TIP 0404-57	num
title	Troubleshooting cross-machine direction moisture profile problems	en
type	standard
page	8
status	Active
tree	TAPPI - TAPPI:;2010
contenttype	fulltext
subject keywords	Cross direction
subject keywords	Dryer pockets
subject keywords	Dryers
subject keywords	Felts
subject keywords	Forming sections
subject keywords	Humidity
subject keywords	Infrared detectors
subject keywords	Measurement
subject keywords	Moisture content
subject keywords	Moisture control
subject keywords	Nip
subject keywords	Profiles
subject keywords	Temperature
subject keywords	Thermography
subject keywords	Water permeability