Fundamentals of Spun Yarn Technology

ISBN-13: 9781566768214 / Angielski / Twarda / 2003 / 552 str.

Carl A. Lawrence

Opis

Existing textbooks covering the subject of yarn manufacture largely concentrate on describing the workings of machines. Fundamentals of Spun Yarn Technology presents complete coverage of yarn manufacture and technology and current research findings on the structure and properties of spun yarns. Written by a well-known and respected authority on textile technology, it not only introduces the subject, but it provides students with an advanced understanding of the various process stages.
The book introduces the rudiments of staple yarn technology, covering the manufacturing process, the raw materials, and processes including short staple, worsted, semiworsted and woollen spinning, doubling, and specialty yarn processes. It also covers the more advanced studies in staple yarn technology, including new developments in fiber preparation technology, carding technology, roller drafting, gilling, ring spinning, open-end rotor spinning, air jet spinning and new research on unconventional spinning systems. This extensive range of topics, along with hundreds of tables and illustrations presented in Fundamentals of Spun Yarn Technology make it a comprehensive and up-to-date treatment of the field.

Spis treści

The Fundamentals of Yarns and Yarn Production
Early History and Development
Yarn Classification and Structure
Yarn Count Systems
Twist and Twist Factor
Fibre Parallelism
Principles of Yarn Production
Raw Materials

Materials Preparation - Stage I: Opening, Cleaning and Scouring
Introduction
Mechanical Opening and Cleaning
Striking from a Bestseller
Beater and Feed Roller
Utilisation of Air Currents
Estimation of the Effectiveness of Opening and Cleaning Systems
Wool Scouring
Wool Carbonizing
Tuft Blending
Opening, Cleaning and Blending Sequence

Materials Preparation - Stage II: The Fundamentals of the Carding Process
Introduction
The Revolving Flat Card
Worsted and Woollen Cards
Sliver Quality
Autolevelling
Backwashing

Carding Theory
Opening of Fibre Mass
Carding Actions
Web Formation and Fibre Configuration
Fibre Breakage

Materials Preparation - Stage III: Drawing, Combing, Tow-Top Conversion, Roving Production
Drawing
Combing
Conversion of Tow-to-Sliver
Roving Production
Environmental Processing Conditions

Yarn Formation Structure and Properties
Spinning Systems
Ring and Traveller Spinning Systems
Open-End Spinning Systems
Self Twist Spinning System
Wrap Spinning Systems
Twistless Spinning Systems
Doubling Principles
Economic Considerations

The Principles of Package Winding
Basic Principles
Types of Winding Machines
Random Wound Cones
Precision Open-Wound and Close-Wound Packages
Yarn Tensioning and Tension Control
Yarn Clearing
Knotting and Splicing
Yarn Waxing
References

Yarn Tensions and Balloon Geometry in Ring Spinning and Winding
Introduction
Circularly-Polarised Standing Waves
Yarn Tensions in Ring Spinning
Balloon Profiles in Ring Spinning
Tensions and Balloon Profiles in the Winding Process

Fancy Yarn Production
Classification of Fancy Yarns
Basic Principles
Production Methods
Design and Construction of the Basic Profiles
Analysis of Fancy Yarns

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Carl A. Lawrence