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Solutions for the Winding of Nonwovens(解决方案非织造布的绕组)
Solutions for the Winding of
Nonwovens
©2014
David Roisum, Ph.D. INDA 2014
Finishing Technologies, Inc. 80.1
What is a Web?
Long Thin Flexible
• All webs follow the same laws of physics
• If we know the physics, we know the behavior 80.2
What Is Web Handling?
• Web Handling • Wrinkling
– Rollers (3) – Wrinkle Cause/Cure
– Tension Control (2) – Spreading
• Web Converting
– Nip Control (2)
– Slitting
– Temperature/Moisture – Winding
Effects and Control
– Guiding (Path Control)
• Other
– Material Properties
– Physical Properties
– Problem Solving 80.3
Why Study Web-Handling?
• Baggy Webs
• Curl
• Length Width (dimension)
• Registration (location)
• Web Breaks
• Winding Defects
• Wrinkling
• etc
80.4
Why a Nonwovens Focus?
• Material Properties are quite different
– Low modulus (favors different defects)
– Rough surface (no air entrainment)
– Looser web/machine tolerances
– Your cousins are tissue
• Winding
– Different defect set
– Different winder settings
– Different quality measure
80.5
Winders are Found in
• Web-to-roll • (Slitter) Rewinder
– Manufacturing such as
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