Showing posts from August, 2023

Industrial Production Engineering Job Interview Questions and Answers

Industrial  Production Engineering   Q: What is I.P.E / Industrial Production Engineering ? Ans. Industrial Production Engineering deals with production engineering and tries to increase production by applying technological and engineering methods Q: What are the functions of the IPE Department? Ans. The following are the main functions of the IPE department. a. To follow up the production process b. Working process development c. Time Study d. Method Study e. Motion Study f. Machines Layout g. Line Balancing h. Line-wise-his efficiency report i. Capacity Study J. Workers Interview k. Workers Training, etc. Q: What is the  Method of Study ? Ans. of  It is the study of methods of work the methods job to achieve process improvement, improve layout, improve design, reduce fatigue and cost, to develop easier effective methods.   Q: What is a Motion Study? Ans It is the Systematic and scientific analysis of the movement of employees, the mother movement of different parts of human beings, a

VAT Dyes: Properties, Applications, and Benefits

  What is Vat Dye/ Vat Dye Definition This chapter discusses vat, indigo and sulphur dyes together because their use in dyeing involves the same principles. Vat dyes are one of the oldest types of dye Vat dyes in particular give dyeings on cellulosic fibres with the best overall fastress properties. Because of the popularity of blue jeans, Indigo is still one of the most important of all dyes in present use. Natural Indigo was obtained by extraction from leaves, and by fermentation in wooden vats, the origin of the term ' vatting Today, Indigo is synthesised from manufactured intermediates. Its application involves reduction to the water-soluble leuco compound, dyeing the cotton and re-oxidation of the leuco dye in the fibres to the insoluble pigment, The basic steps involved in vat dyeing  Vat dyes are water-insoluble pigments. They are called dyes because the chemical reduction in alkaline solution converts the pigment into a water-soluble leaf form with substantivity for cotton

Direct Dye Definition, Chemistry, Applications, Classification and Properties

  Direct Dye What is Direct Dye in Textile?  Direct cotton dyes have inherent substantivity for cotton and for other cellulosic fibers. Their aqueous solution dye cotton is usually in the presence of an electrolyte such as NaCl, and Na2SO4. Direct dyes do not require the use of a mordant and as their name implies, the dyeing procedure is quite simple. The goods go into the bath followed by the dissolved dyes. The bath is then gradually heated, usually to a boil, and the addition of salt promotes dyeing Many direct dyes are relatively inexpensive. They are available in a full range of hues but are not noted for their color brilliance. Their major drawback is their poor to moderate fastness of washing. This limits their use of materials where good washing fastness is not critical. The light fastness of dyeing with direct dyes on cellulosic fiber varies from poor to fairly good, although some copper complex direct dyes have very good light fastness. As usual, the deeper the color of the d