Knit fabric dyeing process pdf

By finishing we can maintain fabric shape and size. Woven fabric is produced with interlacement of warp and weft yarn. Natural dyes were used only for coloring of textiles from ancient times till the nineteenth. Natural cotton, after weaving and washing, is an offwhite color like a light shade of ecru or cream. As each row progresses, a new loop is pulled through an existing. During these dyeing observe different types of faults which is called dyeing faults. Knit fabrics containing spandex can be relaxed in the mill by a number of methods. If it is to be sold as bleached fabric or made into white clothing, it is first bleached, washed, then often treated with optic whiteners and washed again.

Fine yarn is on front side and course yarn on back side. Proper processing of 100% cotton knit fabrics cotton incorporated. Textile dyeing is the process of application of color evenly on the textile fiber, yarn, fabric, or even garment. Silk dyeing methods and process, silk fabric for dying at. Fabrics that contain ingeo fiber spun yarns only do not need to be preheat set. The pla fabric should be preheat set to a width 6% 10% less than the off loom fabric width, and with 6%. Process flow chart of knit dyeing textile flowchart. As knit fabric material is handled by the air, there is no fear of damage during operation. Dyeing is one the most important part in the textiles manufacturing house. Definition of knitting knit fabric manufacturing process. Dye penetration may not be good in thicker fabrics. It is well established that knitted fabrics of all constructions and fiber blends are. Generally all types of single jersey, double jersey and their derivatives are dyed by different way. The dyeing of cotton knitted fabric is a very complicated as well as interesting process.

During dyeing process mordants were applied in different amounts in different conical flax with the dyes solution to find out the best dyeing results. Maximum knit fabric problems are created during preparation, dyeing and after treatment process. Common problems of knit dyeing are edge mark, crease mark, pin hole, loss of fabric strength, shade variation of batch to batch, uneven dyeing such as roll to roll shade variation, patchy, color spot, white spot, meter to meter shade variation. The equipment you use for dyeing should never be reused in the kitchen, so find old equipment, or. Related content a comparative study of electrochemical machining process parameters by using ga and taguchi method. Methods of dyeing process of dyeing the chemistry of. Silk is dyed using various dyes such as acid dyes, metalcomplex, reactive dyes etc. Overview of a knit dyeing factory with necessary production formulas. The process flow diagrams for woven fabric finishing, knit fabric finishing and stock and yarn dyeing and finishing are shown in figs 2 4. Most forms of textile materials can be dyed at almost any stage. Color decisions can be made after a fabric has been manufactured, so the process is. May 30, 2018 dyeing machine is the heart of dyeing industry.

Finishing is a general term which usually refers to treatment on textile fabrics after dyeing or printing. A dye, which is capable of reacting chemically with a substrate to form a covalent dye substrate. Knitted fabrics can be made much more quickly and easily than woven fabrics at comparatively less cost. Process flow chart of woven dyeing textile flowchart. Protection from cold sweat absorption sweat shirt baby clothes 15. The active stitches are held on a needle until another loop can be passed through them. Dyeing and printing are processes employed in the conversion of raw textile fibres into finished goods that add much to the appearance of textile fabrics. Mar 26, 2014 parameter of finishing process in knit dyeing 1.

Knit fabric processing textiles fibers free 30day trial scribd. Then the greige fabric is inspected for any faults or defects. Knit dyeing is near similar as yarn dyeing process but there is some difference in quality measurement. The chemical and physical structures of textile fabric determine how it will perform, and.

Double knits are made from the interlock stitches and its variations. Dyeingknit fabric, machine, shade, dyes and chemicals, flow process,fastness. After that the yarn is passed through the knitting machine where the yarn is converted into. The most commonly used fabric forming methods are weaving, braiding, knitting, felting, tufting and nonwoven manufacturing. Indonesian batiks carries white 72 inch wide knit fabric for dyeing. Pdf innovations and modifications are the continuous processes of wet processing technology in clothing and textile industries. The content of the warp size formulation including. Some knit fabrics made from synthetic fibers will accept dye. The process involves the use of two pairs of needles set at an angle to each other. Also enjoy our line of batik paintings, cotton batik fabric, rayon batik fabric, and knit batik fabric. Acid dyes are more suitable for silk and wool, and the direct and vat dyes are more suitable for cotton and. Knitted fabrics and types list of knitted fabrics textile.

Pgupta0919 is a writer with special expertise in textiles, fabrics, printing, and dyeing. Pdf dyeing of knitted fabrics rehan ashraf academia. Knit dyeing common knit dyeing faults and their way of. Pfd prepared for dyeing rtd ready to dye definitions. As each row progresses, a new loop is pulled through an existing loop.

For true dyeing to have taken place, coloration of fabric. Normally, if the fabric is to be dyed, it goes straight to the dyer at that point. Knit fabric dyeing process is different from yarn dyeing or woven fabric dyeing process. Paper open access related content application of taguchi. Basically there are two types of knitting which are weft knitting, versus wrap knitting and another type is. Oct 29, 2017 heat setting machine for tubular knit fabric. Sometimes, it is found that the dyed fabric shade does not match with the approved. The chemical and physical structures of textile fabric determine how it will perform, and ultimately whether it is acceptable for a particular use. Dwr durable water resistant this is a finishing process to increase durability and give water resistance. Process of dyeing the dyeing of a textile fiber is carried out in a solution, generally aqueous, known as the dye liquor or dye bath. Once measured, the values obtained for raw material and. However, major method of fabric construction is weaving.

Study on different types of dyeing faults, causes and remedies ijens. Pdf efficient dyeing mechanism of cottonpolyester blend knitted. Study on stentering machine in knit dyeing industry. Faults of knit fabric observed in textile industry. Dyeing is a process of applying coloring matter directly on fiber, yarn or fabric without any additives. Dyeing of cotton fabric with reactive dyes textile learner. Jun 08, 2019 pgupta0919 is a writer with special expertise in textiles, fabrics, printing, and dyeing.

This tubular turning machine is for turning tubular knit fabric before dyeing and drying after. Knit dyeing process is near similar to yarn dyeing process but there is some difference in quality measurement. A wide variety of knit fabric dyeing machine options are available to you, there are 446 suppliers who sells knit fabric dyeing machine on, mainly located in asia. It is more practical process which is done in the dyeing. Dyeing is a process of coloration of textile fabric by. The process sequence involved in textile knitting process is firstly the yarn is put into the knitting machine creels. A fabric made by sheep wool, soft warm a fabric soft, warm bulky generally used to. Sometimes, it is found that the dyed fabric shade does not match with the approved swatch then this fabric is required to re dyeing. Knitting is a method by which thread or yarn may be turned into cloth. In textile industry, a lot of faults observed in knit fabric from its manufacturing process to dyeing finishing which are totally unexpected. Reactive dyeing instructions dyeing fabric is a delicate process with lots of moving parts. A lot of processes were observed to conduct this study. The importance of woven fabrics increases constantly. The equipment you use for dyeing should never be reused in the kitchen, so find old equipment, or purchase supplies specifically for dyeing.

There are many machines in the market, but all of them have same pattern and working mechanism. Jets and winch dyeing machines are generally used as exhaust equipment for preparation, dyeing and finishing of apparel knit fabrics. Here the dye contains a reactive group and this reactive group makes covalent bond with the fibre polymer and act as an integral part of fibre. Dyeing of sj cotton knit fabric with natural dye extracts from green walnut shells. Quality woollen goods are frequently dyed in the form of loose fibre, but top dyeing or cheese dyeing is favoured in treating worsteds. Protect your surfaces and clothes while you work, and wear rubber gloves and a dust mask throughout the dyeing process. Bangladesh university of engineering and technology, bangladesh. An effort is made to formulate all the production steps. Finishing accentuate or inhibiti some characteristic of fabric. To get an exact shade, you need to be pretty darn goodbut practice makes perfect.

The dyeing of knitted fabrics made from 100 % cellulose using online procedure vinyl sulfonic reactive dye, with or without ultrasound energy. The dyeing of knitted fabrics occurs in the exhaust method or in batchwise process. Different types of fabric testing with testing method. Mohammad zillane patwary knit dyeing is near similar as yarn dyeing process but there is some difference in quality measurement. Mar, 2019 knitting is a method by which thread or yarn may be turned into cloth. Process flow chart of knit fabric dyeing with reactive dyes. Methods of dyeing process of dyeing the chemistry of the.

These types of faults decrease the total quality of the knit fabric which ultimately creates a significant impact on the profit percentage. Pdf dyeing of sj cotton knit fabric with natural dye. Textile dyeing is the process of application of color evenly on the textile fiber, yarn, fabric, or even. Dyeingknit fabric, machine, shade, dyes and chemicals, flow process,fastness i. Generally all types of single jersey, double jersey and their derivatives are dyed by the following way. Dyeing is the process of adding color to the textile material. Dyeing of sj cotton knit fabric with natural dye extracts. Two yarns forming loops in each course of the fabric knit the fabric. However, preheat setting will help to avoid creases in dyeing.

This aim of the study is to know about stentering machine in knit dyeing industry in details. Four fabrics including single jersey, lycra single jersey, rib and interlock fabric were selected for this study. Apr 21, 2019 knitting is the construction of the elastic, porous fabric, created by interlocking yarns by means of needles. Definition of knitting knit fabric manufacturing process in. A dye, which is capable of reacting chemically with a substrate to form a covalent dye substrate linkage, is known as reactive dye. Starting from traditional uses mainly in clothing applications, woven fabrics today are key materials for structural, electronic, telecommunications, medical, aerospace and other technical application fields. Aug 30, 2017 some knit fabrics made from synthetic fibers will accept dye. Overview of a knitdyeing factory with necessary production formulas. In 1st phase, for dyeing sj cotton knit fabric with green walnut power. Fabric preparatory process for dyeing and printing duration. Passing the fabric over a steam box offline of the tenter frame after slitting. Depending on the requirement, textile dyeing can take place in any stage of manufacturing of the textile. Made of stainless steel, the main pipe can stand up permanently without rusting.

Abstract different processes associated with complete production of fabrics are discussed briefly in this paper. Common problems of knit dyeing are edge mark, crease mark, pin hole, loss of fabric strength, shade. This process is never used on knitted fabrics because sizing materials are not applied to yarns used for knitting. This is the most important sector among the dyeing industries in bangladesh. For true dyeing to have taken place, coloration of fabric and. Here, i have given a discontinuous dyeing process by hot brand reactive dyes. Knit dyeing is a critical procedure and it is required to match the shade of the dyed fabric with the buyers approved swatch. Process flow chart of knit fabric dyeing with reactive. Assessment of mordanting effect on fastness properties. Study on different types of dyeing faults, causes and. After that the yarn is passed through the knitting machine where the yarn is converted into knitted greige fabric and it is wound in the roll form. Dyeing is the aqueous application of dyes on textile substrate1.