In the illusion there are two movements - first and second order motions The following draft limits have been established for practical. Yarn properties developments with diagonally slotted roller on ring spinning machine ... designed with various slot angles to positively lead the end of fibres in two sides of the twist triangle to the yarn body and reduce the protrusion of the fibres from the body of the yarn. Hence traveller fly occurs. Please note that the defective bottom apron and top roll will not only affect the quality, but also the production, because the defective bottom apron and top roll make the spindle a sick spindle which will be prone to end breaks. Ring traveller contact area is close to the toe portion of the traveller. This angle conforms to the middle part of the letter “S” and, therefore, is referred to as “S” twist ((Sometimes referred to as left-hand twist).Ring spun yarn (not open end yarn) can be produce with “S” twist. Solo spinning is primarily being developed to make single woollen yarns suitable for use as warps without plying. PROCESS PARAMETERS IN SPINNING. If the twist multiplier of a cotton yarn is known, the twist angle can be easily calculated. The optical illusion that will leave your head spinning! These elements are arranged at various angles and distances relative to each other. These studies have reported approximately 50% fibre extent in yarns spun on a friction-spinning machine as against 80–85% in corresponding ring spun and 70–80% in rotor spun yarns. However, these new concepts of ring spinning have Rotating rings change direction when you look at them. There are some works in which friction forces and heat generated were reduced using a rotating ring with magnetic or air bearing [3], [4], [5]. In the ring spinning frame, the fibre bundle follows a path between the drafting system and yarn take-up on the cop. Ring spinning is a comparatively expensive process because of its slower production speeds and the additional processes (roving and winding) required for producing ring spun yarns. Ring spinning is a method of spinning fibres, such as cotton, flax or wool, to make a yarn. High traveller speed leads to higher contact pressure (up to 35 N/mm2) and generation of heat. Rough surfaces due to damaged parts roughen the yarn; that might be the separators, the lappet eyes, rings and travelers, anti balloon rings, etc. its service life. [ 56 ] have proposed that four parameters are required to characterize migration of a fibre in a yarn: mean fibre position, amplitude of migration, mean migration intensity and migration frequency. The solo spinning attachment can be fitted onto existing ring-spinning machines; it consists of a pair of solo spun rollers held in a bracket, which is clipped onto … Poorly centered spindles, spinning rings, anti balloon rings and yarn guides lead to inconsistent yarn tension. The effort is justified, but unfortunately in relation to ring spinning it remains without success. The ring frame developed from the throstle frame, which in its turn was a descendant of Arkwright's water frame. twisted core of fibres, moreover the fibres will not get any tension differences as in the ring spinning this results in poor migration of fibres and hence yarn structure[2,3,4,5]. This leads to extreme wear out and finally the traveller breaks and flies. It is reported that the spinning tension is a function of spindle speed, traveller mass, ring diameter, coefficient of friction between ring and traveller, and angle of lead (Stalder, 1991, Stalder, 1994). This can be observed easily in the balloon on any ring spinning machine. It makes the yarn touch or rub some metal parts, more than normal, resulting in hairiness. The 40 tex wrap yarns were made on the Yantra PKVE (Prenomit) spinning machine at 150, 250, 350, 450 and 550 tpm, while 20 × 2 tex ring spun yarns were spun at 550 tpm and ply-twisted at 570 tpm. It is a giant formation of astroengineering proportions..