Acid wash / Random wash At present times, the most popular denim garments are random washed among the fashionable people. When solid washed the fading, effects are even and uniform in the garments but when random washed effects are uneven. […]
Reactive dye || Reactive dye features || Reactive dye classification
REACTIVE DYE Reactive dye is only dye that reacts with the textile fibre & makes covalent bond with fibre.Under the suitable condition it reacts with –OH or –NH2 of the fibre & forms covalent dye substrate linkage. DYE-SO2-CH2-OSO3Na + HO-Cell ———- D-SO2-CH2-CH2-O-Cell + NaHSO3 FEATURES of REACTIVE DYE 1. Water soluble. […]
Feed of the Arm Sewing Machine II Study on industrial feed of the arm sewing machine with thread path diagram
Experiment Name : Study on industrial feed of the arm sewing machine with thread path diagram. Introduction : The machine which practices stitches by the loop of one group of thread links with the loop of other group of thread by the process of interloping is called the industrial feed of the arm machine. There are […]
Weak-link effect
In general, the effect of sample length on breaking strength has been shown that the mean measured the strength of a specimen decreases as the sample length is increased. This fact is well known as the “weak-link” effect.
Dyestuff | Classification of Dyestuffs
Dyestuff: Dyestuffs are organic and inorganic substances which consists of chromophore groups, can change the physical and chemical properties of any substance , can absorb light and reflect lights to show color. They are unsaturated complex compound. Characteristics of dyestuff : It must contain chromophore group Chromophore group can be different types like -NO2,-NH2,-CO-,-N=O. […]
Fibers for Technical Textile
The usages of fibres in the technical textile area are not only the high functional fibres alone, but also the natural (due to bio-degradability and compatibility) and common man-made fibres occupied considerable share, which is shown in table . ( 1 ) Domestic fibres: Medical Application-Cotton, silk polyester, polyamide are used in medical applications. Geo […]
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 …
Instantaneous and time-dependent effect
When a load is applied on a specimen constantly for a period of time, the specimen initially extends rapidly giving the instantaneous effect and then less rapidly which yields to time dependent effect.
Finisher Card Machine
For getting better quality of jute yarn, Finisher card machine is necessary in jute spinning industry. It is usually down striking and full circular carding machine, having 4.5 pairs of workers and strippers. Its feed and delivery is on the same side of the machine.
Electron Microscope
There are two different types of electron microscopes, scanning electron microscopes (SEM) and transmission electron microscopes (TEM). In the TEM method, an electron beam passes through an extremely thin section of the specimen.