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BACKGROUND In 1991, textile researchers at Universities in Eastern Europe introduced a change in the traditional manufacture of ring-spun yarn. Condensation of the roving web prior to entering the spinning triangle produced a less hairy and more compact yarn structure. Surface fibers from the condensed roving provided reduced protruding surface hair and a smaller diameter […]
Carbon fiber is a super strong material that is extremely lightweight. It is five times as strong as steel, two times as stiff, yet weighs about two-thirds less. Carbon fiber is basically very thin strands of carbon (even thinner than human hair). The strands can be twisted together, like yarn and then be woven together, like cloth. To make carbon fiber take on a permanent shape, it can be laid over a mold and coated with a stiff resin or plastic. Carbon fiber can also be defined as a fiber containing at least 92 wt % carbons.
Although the Ring Spinning is one of the most widely used staple yarn spinning techniques, Ring Spinning is not free from difficulties. Most commonly faced challenges while using Ring Spinning are listed.
The traveller speed in a ring frame is the main limitation in achieving higher spindle speed because of the frictional resistance of traveller over the ring flange. The design, metallurgy, surface finish and breaking-in of the rings decide the speed at which a ring frame can be run without excessive end breaks. It is important to understand the schematics of the ring travellers in order to achieve maximum productivity from the ring spinning machines.
The ring spinning system is the oldest spinning system that remains dominant because of the high-quality yarns it produces. Ring spinning has various advantages besides disadvantages.It is the most flexible system from the viewpoints of fibers which can be used and the extent of the yarn counts which can be produced.
Classification of winding machines broadly based on package, winding, drive, and type of yarn used.Also, the various faults of the winding are specified. Some common causes of the faulty winding are also discussed.
There are two types of winding machines: precision winders and drum winders. Precision winders, used primarily for filament yarn, have a traverse driven by a cam that is synchronized with the spindle and produces packages with a diamond-patterned wind. Drum winders are used principally for spun yarns; the package is driven by frictional contact between the surface of the package and the drum.
There are various commonly used popular Yarn Formation Systems.Some of them are Cotton woolen or worsted, staple, Filament yarn formation systems. Also some of the common types of yarns like mercerized, dyed, grindle or twisted, yarns are discussed in this page.
The results of energy consumption calculation in spinning mills on machines and compressed air.
In order to obtain the specifc energy consumption of any yarn, each an every machine in the spinning operations right from the bale opener and the approach should be repeated for the rest of the machine/step.