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Drawing | Drawing of Synthetic Fibres | Objectives of Drawing | Purpose of Drawing | drawing principle

  Drawing of Synthetic Fibres :     With the exception of silk , all the filaments are manufactured from man-made materials . silk is a natural filament.       The man-made materials are primarily made from chemicals that must be formed and solidified into fibre form.       The fibre forming polymers are normally solids and […]

Systems of Yarn Count Measurement

Systems of Yarn Count Measurement

Systems of Yarn Count Measurement What is count/yarn count ? Count or yarn count is a numerical expression which indicates the coarseness or fineness of a yarn. In other words, yarn count is a number indicating the mass per unit lengh or the length per unit mass of the yarn. There are mainly two systems […]

Drawing | Drawing of Synthetic Fibres | Objectives of Drawing | Purpose of Drawing | drawing principle

Directional Field Effect in Wool fiber | Significance of DFE | What is DFE

DFE (Directional Field Effect) in wool fiber What is DFE ? We all know that, textile fibers have to undergo various processes before they become a part of the fabric. While undergoing these processes, the fibers are subjected to friction. This frictional force can not only be effective between the fibres & various parts of […]

Drawing | Drawing of Synthetic Fibres | Objectives of Drawing | Purpose of Drawing | drawing principle

Creep and Crimp of fiber

Crimp is a term to describe the waviness of a fiber. We can also describe this in terms of the force or energy required to uncrimp a fiber. It’s expressed in percentage. A crimped fiber placed on a flat plane is l0 and the length of the same fiber when the crimp is removed by applying a tension is l, then the crimp is given by …

Drawing | Drawing of Synthetic Fibres | Objectives of Drawing | Purpose of Drawing | drawing principle

X-ray diffraction method

It is an independent method to determine the amount of crystalline matter present in the fiber. W. L. Bragg presented a simple explanation of the diffracted beams from a crystal. When X-ray beam is incident on a crystal, it strongly reflected wherever its layers of atoms at an angle show in fig. Such that, nλ=2dsinθ

Drawing | Drawing of Synthetic Fibres | Objectives of Drawing | Purpose of Drawing | drawing principle

Absorption of IR radiation method

Infra-red (IR) spectroscopy is one of the most common and widely used spectroscopic techniques. When electromagnetic waves interact with matter, they are scattered and absorbed. Infrared spectroscopy, radiation with wavelengths between 1 -15 μm is absorbed at certain characteristic frequencies, which yield structural information.

Drawing | Drawing of Synthetic Fibres | Objectives of Drawing | Purpose of Drawing | drawing principle

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