Chapter 19

Chapter 19 - NONWOVEN FABRICS CHAPTER 19 1 NONWOVENS...

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NONWOVEN FABRICS CHAPTER 19 1
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NONWOVENS DEFINED fiber webs textile structures “produced by bonding or interlocking of fibers, or both, accomplished by mechanical, chemical, thermal or solvent means and combinations thereof” (ASTM 1998) 2
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NONWOVENS DEFINED Classifications durable products multi-use, not made to be thrown away after use blankets, interfacings, carpet backings disposable products made to be disposed after single/limited use 3
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THE GLOBAL INDUSTRY fast-growing segment of textile industry wood pulp to polymer pellets ( resins ) roll goods – nonwovens are referred to as roll goods 4
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MANUFACTURE Two steps in manufacturing nonwovens preparation of fiber web bonding of fibers in web 5
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Fiber Web Formation Staple Fiber Webs dry forming methods: dry laying or carding method thin fiber film from card laid down on conveyor Machine direction air laying method Open, suspended air, collected on screen wet forming Fiber in water, collected on screen, drained, 6
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Fiber Web Formation Direct Extrusion Processes Spunbonding method synthetic filament fibers Polymer is melted, extruded from spinneret, cooled, entangled, heated rolls bond Polypropylene & polyester are the primary fibers bonded
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This note was uploaded on 01/19/2012 for the course HUEC 2040 taught by Professor Staff during the Fall '08 term at LSU.

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Chapter 19 - NONWOVEN FABRICS CHAPTER 19 1 NONWOVENS...

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