Studies of a worsted short spinning system of modular design (German)

A project has been carried out at the Textile Research Institute, Greiz, Germany, to develop a test rig for doubling and drafting long-staple-fibre slivers without damaging the fibres. The aim was to reduce fibre crimp and produce finer slivers. Slivers were produced which could be spun directly on conventional test ring spinning systems...

Machinery for spinning and preparation for spinning in the staple fibre system (Spanish) (Macquineria de hilfura y preparacion de la hilatura en el sistema de fibras cortas)

The article describes machinery for spinning and preparation for spinning staple fibres exhibited at ITMA 99. The exhibits highlighted include a system for spinning ultrafine cotton yarns by SKF Spinning Parts, the ComforSpin system by Rieter, rotor spinning systems with robots (the Autocoro 288 and Corobox SE II by Schlafhorst), new spin..

Influence of cots and aprons on yarn quality

Cots provide uniform pressure on the fibre strand for efficient drafting and aprons help to control floating fibres. In the case of cots, factors that influence yarn quality are shore hardness and in the case of aprons, it is the softness of the outer layer. Factors influencing the useful life of both are outlined. Achievable levels of ya..

Development of silk-like knitted yarns and fabric using acryl staple yarn by heat drawing technology

This project surveys manufacturing technology of the silk-like acryl yarn sand fabrics, and includes development of the drawing system of acryl staple yarn. Using this drawing system, optimum drawing ratio and temperature are decided. Find staple acryl yarns(100 Ne) are made from 66 Ne and 52 Ne staple acryl yarns using the drawing system..

ATI innovation award: Zellweger Uster for its Quantum clearer

Zellweger's new yarn clearer is digital, has capacitive and optical sensing capability and gives yarn fault classification according to the Uster Classimat concept. Quantum has completely digital electronics, self-calibrating measuring heads, and on-board diagnostics. The unit is retrofittable tomany existing machines.

Development of an auto-doffer for covering machines Part 8: Vehicle type doffing system with bilateral open cradle (Japanese)

The vehicle type auto-doffing system for the covering machine has been proposed in order to automate the preparation process of covered yarn. In this report, doffing mechanisms for covered yarn bobbins are developed. A new type cradle system is also proposed, in which both side arms can turn outside in order to correspond to the doffing m..

Latest developments in opening and spinning machinery (Spanish) (Ultimos desarrollos en maquinaria de apertura e hilatura)

New opening and spinning machinery introduced by leading firms is presented. It includes the DK 903 carding mahine with the option of the integrated IDF drawing frame by Trutzschler ; the new EliTe spinning system and the SC 1-M spinning box by Suessen; the C51 carding machine with the IGS system, the E72 combing machine with the computer..

Characterization of neps in spinning processes

Nep level in the yarn is an important quality specification laid down for both domestic and overseas markets. High levels of neps in the yarn lead to poor yarn and fabric appearance. The invention of the AFIS machine provides quick and objective measurements of these levels in the cotton raw material. Attempts have been made to study the ..

Twisting (staple fiber and filament yarns, fancy ply yarns)

Many detailed innovations in the twisting sector were on display at ITMA '99. Saurer/Volkrann introduced the Trendtwister, a two-for-one machine equipped with an optical sensor and central data display. Savio of Italy displayed its Twist Master, also equipped with a fault-finding optical sensor. In the field of baloon-free twisters, Saure..

ITMA 99 survey 7 : Unconventional spinning

Developments are examined in 7 categories : rotor spinning (especially in short staples), air-jet spinning, friction spinning, centrifugal spinning, solospun spinning, compact/condenser spinning, and slub and fancy yarns. Companies with notable innovations in rotor spinning at ITMA include Schlafhorst, Rieter, Elitex, Suessen and Barco. M..