Filament blending in air-jet texturing. Further observations of the appearance of blended air-jet textured yarns and fabrics

The aim of this study is to attempt to relate the blending parameters describing the level of blending to the surface appearance of air-jet textured yarns. The reflectance of the yarn surface is measured and an assessment is made of its variation along the yarn length. Expressions are derived to quantify the frequencies and amplitude of s..

Drawing of nylon, polyester and polypropylene prior to air-jet texturing

The different methods of drawing used before air-jet texturing of nylon, polyester and polypropylene yarns are discussed and reasons for this diversity are given. Pin geometry and yarn tension are examined in relation to yarn properties. Some new comparative data are presented for polyester and polypropylene.

Air-jet texturing shrinkage - yarn or loops?

The factors which have presented obstacles to the growth of air-jet texturing are discussed from the point of view of cost and complexity. Improvements to the machine, air jets and supply yarns are proposed.

yarn wetting mechanism and suitable supply yarns for air-jet texturing

A report of research work to explain the wetting mechanism during air-jet texturing is presented. The suitability of filament yarns for this process is also discussed. On the basis of theoretical considerations and the results of experimental studies, it is argued that suitable supply yarns should have a high number of fine filaments, pre..

Air flow in texturing and mingling nozzles: similarities and differences

Air flows within and outside air-jet texturing and intermingling nozzles are studied by flow measurement and visualization techniques. it is shown that the flows from texturing and intermingling nozzles differ in that texturing nozzles create turbulent, supersonic flows on the primary flow side, whereas flows from intermingling nozzles ar..

Specific applications for interlacer jets

Two recent applications of interlacing are discussed: a) the interlacing of flat yarns, where the effect of jet geometry on yarn structure is examined; b) the production of hosiery yarns by the 'Heberlein-Fixpunkt-Verfahren'.

Evolution of the air-jet texturing process - a historical review

A review of the patent literature from the early beginnings of air-jet texturing to the present time is given. Great emphasis is placed on the developments which have occurred during the last decade. There are 22 references.

Basic principles of air-jet texturing and mingling/interlacing processes

The areas of application of air-jet texturing and air mingling are discussed, along with the basic principles of the processes. The mechanisms of these processes are also explained, together with the types of nozzles used. Some research findings are also presented.

Influence of blend yarn composition on its snarling properties

The effect of the polyester component of cotton/polyester yarns on their snarling tendency and tensile properties is investigated. The residual torque and the manner of yarn relaxation are both examined.

Notes on the hairiness of cotton-spun yarns: the effect of fibre properties on measurements made with the Zweigle G565 Hairiness Meter