Yarn Path in Friction False Twisting -- Part 3: Inclination Angle on the Disk Surface of Multi-Disk Unit.

Friction twisting with a multifrictional disc unit constrains the textured yarn to contact the discs. The inclination and wrapped angles on the disc surface play an important role in estimating the value of twist and tension. An experiment measured these angles during friction twisting and compared these values with those calculated based..

Yarn Hairiness -- Concept, Theory, Measurement, and Evolution throughout the Industrial Textile Process. Chapter X. Hairiness throughout the Spinning Process -- Other Spinning processes.

Chapter ten of a series of articles on yarn hairiness focuses on yarn hairiness during spinning, including spinning processes using carded wool, the Disc-Ring spinning system, self twist spinning processes, air vortex spinning processes, hybrid spinning systems (rotor-ring and jet-ring spinning), covered yarn processing, core spun yarn pr..

Better Ply Yarn.

The Constant-Lubricating system improves the running properties of yarns during beaming, warping, weaving, and knitting. The system lubricates the yarn before the twisting zone without saturating the yarn core. Its newly designed wetting unit features an upper and lower part with different granulation, resulting in uniform lubrication tra..

Blending of Polyester with Wool on Long Staple Spinning for Suitings.

Blending polyester with fine wool yields fine yarns that are superior in strength to conventional single fiber yarns. Advantages of polyester fibers include high tenacity, good luster, uniform yarn manufacturing, and excellent spinnability. Advantages to blending with wool include lower production costs and end products that can be worn i..

Fibre Fly -- A Troublesome Fault in Dyed Yarns for the Knitting Industry -- Effects, Causes, Evidence.

Fiber fly during knitting can result in unwanted colors in knit fabrics, needle damage, faulty needle selection, and clogged needles and sinkers. Researchers studied fiber fly during knitting, spinning, and two-for-one twisting and determined which fiber and yarn properties were indicators of increased fiber fly. Yarns with a high natural..

How the Machine Maker Deals with the Issue of Short Fiber Content.

An overview of new machinery that resolves problems with short fiber content by improving cotton yarn structure addresses innovations in prevention and correction. Preventive approaches, which keep short fibers from occurring in the final product, include better combing; proper opening and cleaning in spinning preparation; and Murata Vort..

Analysis of Fiber-Particle-Airflow Interaction and Its Application to teh Development of a Novel Card-Spinning System.

Researchers are analyzing the motion dynamics of fiber clumps and other particles in an air flow field to develop a single-stage process for converting fiber batts directly into yarns. Computational fluid dynamics, experimental analysis, and fluid flow visualization using high speed videography elucidate the fiber opening and cleaning pro..

Amorphous Flat Metallic Threads in Weaving of Technical Fabrics.

Wire rolling with simultaneous drawing or chill block melt extrusion manufactures flat metallic yarns. An investigation into the suitability of flat metallic yarns for weaving determined the linear mass, tensile strength, and elongation at break of flat metallic yarns of amorphous alloys obtained by casting. The most important problems in..

The Autoconer 338

Describes the innovations introduced by Schlafhorst in the new Autoconer 338 which has set a new milestone in the history of automatic package winding. The main innovations are: the Autotense yarn tension regulator which measures, and adjusts, the tension at each winding position constantly; the upper-yarn search is sensor controlled so r..

Planetary napping machine

A planetary napping machine includes a napping roller drum assembly and cylinder head construction which facilitates assembly and servicing of the apparatus. The napping machine includes a frame and a napping roll drum assembly having a main shaft which is rotatably supported on the frame. One end of the main shaft engages with a drive as..