The order of interlacement of warp and weft threads at right angles is known as structure of woven fabrics. The interlooping system of yarns is known as structure for knit fabrics. Classification of woven fabric structure: Simple structure and Compound Structure.Methods of fabric representation:❶Warp overlap in which warp is above weft and ❷Weft overlap in which weft is above warp
Yarn count conversion and yarn count converter
Yarn Count Conversion
Conversion from direct to direct system
Conversion from indirect to indirect system
Conversion from direct to indirect system
Conversion from indirect to direct system
Spinning Carding Machine : Chute Feed System
The system of feeding small tufts of cotton fibers directly from blow room to the card is called the chute feed system.
Card is arranged in series circuit through pneumatic pipe.
Carding Definition
Carding Definition : Carding Definition: Carding is a mechanical process that disentangles, cleans and intermixes fibers to produce a continuous web or sliver suitable for subsequent processing. Two proverbs of the experts- “Carding is the heart of spinning” and “well carded is half spun” demonstrate the immense significance of carding in the spinning process. CARDING […]
Broken and Rearranged Twill
Broken twill is formed by breaking the twill line of basic twill. Normally straight draft is used to produce this weave. Rearranged twill is produced by the rearrangement or transposition of the original order of the threads in the regular basic twill.
Relation Between Yarn Count and Diameter & count calculation for ply yarn
Normally, when two single yarns are twisted together one should expect some contraction or some increase in length depending on the twisting direction. A contraction will result in a yarn slightly coarser than the estimated value. In order to correct for this difference, typically 5% to 10% contraction or extension should be accounted for.
Derivatives of Plain Weave
There are two types of derivatives : Rib and Matt. In rib weave, it produces rib or cord effect in warp/weft direction. Used as grosgrain cloth, mattress cloth,hair cords, blankets etc. Matt is constructed by extending the plain weave both vertically and horizontally. Matt weave finds extensive uses for a great variety of fabrics such as dress materials, shirtings, sail cloth, duck cloth etc.
Melt Spinning , Dry spinning and Wet Spinning Method
Man-made fibers are manufactured by spinning the polymer. There are three major types of spinning process. They are-
█ Melt Spinning (It is used for polymers that can be melted easily.)
█ Dry Spinning (It involves dissolving the polymer into a solution that can be evaporated.)
█ Wet Spinning (It is used when the solvent can’t be evaporated and must be removed by chemical means.)
Computer Networks
Computer networks are collection of computer hardware & software that are interconnected and therefore help users to work togather .It connects computers , printers , scanners & cameras. Using computer network , user can send electronic massages to each other.
Speed Frame and function of speed frame
The output from the draw frame is fed into the roving frame (also called ‘speed frame or simplex machine or flyer frame‘) where the linear density of sliver is reduced by drafting and the resultant product is called the roving. After the drafting operation, the roving is wound on the bobbin. During winding, a little amount of twist is imparted to the roving.