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.
History of Fashion
Fashion is the term used to describe a style of clothing or any other products worn or used by most people of a country. A fashion remains popular for a few months or years before being replaced by yet another fashion.
Twill & Angle of Twill Weave
A twill weave is characteristics by diagonal ribs (twill lines) on the face of the fabric. These twill lines are produce by letting all warp ends interlace in the same way but displaing the interlaceing points of each end by one pick relative to that of the previous end while the plain weave can only be woven in one form, there exit several options with regrad to twills.
Motion of Loom
Shedding is the operation by which the warp is divided into two sheets so that sufficient gap is created for the uninterrupted passage of the weft from one side of the loom to the other.
What Is Loom | Classification Of Loom
The weaving m/c is technically termed as loom .The loom is a device or m/c in which interlacement of warp and weft yarn performed and thus fabric is produced. In 1930's, eventually, each weaving machine driven individually by an electric motor was developed, this loom drive concept has remained in use until the present.
Types of Drafting Plan
The various drafts are classified as follows:Straight draft,Skip draft,Satin draft,Pointed draft,Broken draft,Divided draft,Grouped draft,Combined draft,Curved draft.
Effect of Twist on Yarn and Fabric Properties
The twist in yarns can be caused to affect the properties of the fabric in which the yarns are included.When yarns are incorporated in a fabric such that adjacent sets of yarn vary in the direction of twist, different effects like the shade effect, stripe effect etc. can be produced because of light reflecting from two sets of yarns.
Tensile Testing Terms and Tensile Testing Terms Definitions
Tensile Testing Terms and Tensile Testing Terms Definitions Engineering stress: Engineering stress can be equated to the load applied per original cross sectional area. True stress: True stress can be equated to the load applied per instantaneous (actual) cross sectional area. Unit: N/m2 (Pa) Mass/Specific stress: The ratio between applied load and linear density […]
