Colour Fastness of Textiles | Colour Fastness to Light Colour Fastness The resistance of colour of textiles to fade or bleed against different agencies such as light, wash,water, perspiration, rubbing, acid, alkali,hot pressing, bleaching etc. is called colour fastness. Colour fastness is a term used in the dyeing of textile materials, meaning resistance of the […]
Textile Testing & Quality Control-1
Fabric Shrinkage Test | Types Of Shrinkage | Causes And Influencing Factors Of Shrinkage
Fabric Shrinkage Test | Types Of Shrinkage | Causes And Influencing Factors Of Shrinkage | Measurement Of Fabric Shrinkage Shrinkage : The dimensional stability of a fabric is a measure of the extent to which it keeps its original dimensions to its manufacture. Shrinkage is a problem that hampers the dimensional stability of a fabric. […]
Identification of Textile Fibre
Identification of Textile Fibre A: Burning Test :- Textile fibres can be identified by observing the burning phase of these fibres in flame . All natural and regenerated fibres are burnt to ash and special smell is observed for each fibre. Synthetic fibres on burning contract and form beads. All cellulosic fibres such as jute, […]
Thread Numbering System
Thread Numbering System Sewing Thread: Sewing thread is an essential element of garments. Sewing threads are special kinds of multi-layer yarn that are engineered and designed to pass through a sewing machine rapidly. It can be made out of many different materials including cotton, linen, nylon, and silk etc. According to Oxford Dictionary, “A thread […]
Textile Testing : Pilling Test of Fabric
Pilling Test of Fabric | Pilling Phenomena Pilling: Pilling is formation of little balls of fibers (pills) on the surface of a fabric which is caused by abrasion in wear. Pilling is the tendency of fibers to come loose from a fabric surface and form balled particles of fiber. Causes of Pilling: Due to wear and […]
Determination Of Relative Humidity By Wet And Dry Bulb Hygrometer
Name of Expt.: Determination Of Relative Humidity By Wet And Dry Bulb Hygrometer. Objects : To find out the temperature and relative humidity of lab room Theory: Relative humidity is the ratio of actual vapour pressure to the saturated vapour pressure of the same temperature. Expressed as percentage. Relative humidity = actual vapour pressure/standard vapour […]
Fabric Weight Calculation in GSM
Fabric Weight Calculation in GSM (Woven Fabric) GSM calculation of fabric Fabric is the basic raw material to produce any particular garments . Before going to bulk production , it is quite essential to know and test the GSM of the supplied fabric by the supplier. This GSM can directly be got through […]
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 […]
Span Length
x % Span length is the distance spanned by x %of fibers in the specimen being tested when the fibers are parallelized and randomly distributed and where the initial starting point of the scanning in the test is considered 100%. This length is measured using "Digital Fibrograph‘.
Fibrograph Method
The original idea of the photoelectric scanning or Fibrograph method has been developed by Hertel in 1940 for testing cotton lint. This test method is much faster than the array method and is used widely in fiber laboratories for measuring fiber length and length distribution.