Yarn dyeing process pdf

The dyeing of warp yarns is done continuously using three major methods. Dyed yarns are used for making stripe knit or woven fabrics or solid dyed yarn fabric or in sweater. A dye, which is capable of reacting chemically with a substrate to form a covalent dye substrate linkage, is known as reactive dye. Kam hing international holdings limited yarn dyeing process. Yarns are dyed in package form or hank form by yarn dyeing process. In this case, raw yarn is bought by the mill authority and they dye the grey. Project report on yarn dyeing manufacturing process. The inspected embryo yarn, processed by lot tube machine to comply with yarn dyeing machine requirement, with specified volume and density, is called cylinder yarn, for bleaching and dyeing use. This is used in hand loom weaving inthe northern and northeastern parts ofthailand. The packages are pressed up to a desired height to achieve suitable density of packing. As the name suggests, the yarn itself is dyed to a preselected amount of colours, which are. Anyhow, i have given a short list of costing factor which is applicable for a single yarn dyeing mill. Dyeing basic principles, yarn dyeing definition, yarn dyeing kit, yarn dyeing classes, yarn dyeing tutorial, yarn dyeing workshop, yarn dyeing supplies, yarn. The process of applying color, also called dyeing, can be done at fiber, yarn, beam, and fabric or garment stage depending on the desired end effect.

After dyeing, dye particles get fixed with the textiles material and unfixed dyes are removed from it by further washing. Process flow chart of knit dyeing textile flowchart. During the spinning process other fiber types may be blended with the wool to create various and more unique yarns. The dyeing process can be performed on textile fibers, yarns, fabrics or garments.

There may or may not be thorough penetration of the colorant into the fibers or yarns. Dyeing is the process of adding color to textile products like fibers, yarns, and fabrics. Natural cotton, after weaving and washing, is an offwhite color like a light shade of ecru or cream. The cylinder rack containing cylinder yarn is placed to yarn dyeing machine, with. Instead of the usual piece dyeing, in which the yarn is knitted or weaved first into a fabric, which is then dyed as a whole, dope dyed yarn is the opposite. Do you now own a crock pot but youd still love to make colours of your very own. Generally all types of single jersey, double jersey and their derivatives are dyed by different way. Process flow chart of polyester dyeing disperse dyes. This dyeing process is slightly difference from woven or knit dyeing. The type of process used depends on several things including type of material fiber, yarn, fabric, fabric construction, and garment, generic type of fiber, size of.

Not just wool yarn but also raw wool, roving and a variety of fiber including merino and cormo sheep, silk and alpaca. Us2108188a process of yarn dyeing, dressing, and loom. Almost 100% dye utilization significantly reduces wastewater and the need for rinsing the fabric to remove unfixed dye. A process of coloring fibers, yarns, or fabrics with either natural or. Process flow chart of polyester dyeing disperse dyes dyeing process april 19, 2012 yarn dyeing wet processing technology engr. The dyeing of knitted fabrics occurs in the exhaust method or in batchwise process. Dyeing is normally done in a special solution containing dyes and other chemicals. Very few products are used in the natural grey shade. The process of applying color, also called dyeing, can be done at fiber, yarn, beam, and. Thiswill give scottishs style fabrics, carpet withmany colors and styles. Here the dye contains a reactive group and this reactive. Read article about commercial silk dyeing method at varanasi. In piece dyeing, which is used primarily for fabrics that are to be a solid color, a continuous length of dry cloth is passed fullwidth through a trough of hot dye solution.

Mohammad zillane patwary polyester is the most used synthetic fiber of the world. Dope dyed yarn is an environmentally friendly and efficient innovation in the dyeing process. The undyed, superwash yarn takes dye like a dream, so whether its your first foray into handdyeing or your fiftieth, youre sure to be successful. Knit dyeing process is near similar to yarn dyeing process but there is some difference in quality measurement. Yarn dyeing article about yarn dyeing by the free dictionary. In this post i will explain the hthp yarn dyeing process. Dyeing of cotton fabric with reactive dyes textile learner. Process of yarn dyeing, dressing, and loom beaming filed june 5, 1936 17 sheetssheet 15 feb. Methods of dyeing process of dyeing the chemistry of. Yarn dyeing following dyeing process are followed in yarn dyeing section. Due to doped dyed yarns are created by adding masterbetch colorant to the polymer melt in spinning, it substituted the most polluting process of dyeing.

In a yarn dyeing mill, the raw materials are grey yarn and the finished products are dyed yarn. Pfd prepared for dyeing rtd ready to dye definitions. In order to achieve the required dyeing or printing quality, all factors that may influence the dyeing or printing process must be precisely controlled table. Dyed yarns are used for making stripe knit or woven fabrics or solid dyed yarn fabric or in sweater manufacturing. In this process, yarns are wound from paper cones to perforated plastic cones through which liquor can pass through. The dyeing process can be performed on textile fibers, yarns, fabrics or garments, depending on the properties or for cost control. However, solid shades are becoming more popular and can be dyed by various methods. The heat sets the colour into the yarn better so that it loses less when you rinse it. Yarn dyeing is the method of dyeing yarnsin forms of hanks or packages dyeing. Professional yarn dyeing at home online class bluprint. 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. Cationicdyeable polyester fibre is a special polyester fibre that can be coloured with cationic dye, unlike ordinary polyester fibres.

Preparation can also be performed at any processing stage depending on the dyeing technique employed. Flow chart of yarn dyeing process textile flowchart. Add the optional dyeables kit link under additional supplies needed below to your class and receive 10 skeins of gorgeous cloudborn yarn in your choice of fiber. Yarn dyeing project report manufacturing process cost investment required. This process is used for dyeing polyestercellulosic fibre fabrics in jigger or winchbeck. Fabric dyeing is the method afterweaving, knitting, or nonwoven to makefabrics. X to process and finish the yarn dyed woven fabrics. Yarn dyeing is used to create interesting checks, stripes, and plaids with differentcolored yarns in the weaving process. Silk dyeing methods and process, silk fabric for dying at. Method of polyester dyeing polyester dyeing process. The factors which influence the dyeing procedure are.

The process of applying color to fiber stock, yarn or fabric is called dyeing. Cross dyeing is used to achieve looks for which fiber or yarn dyeing would typically be required. The most effective dyeing process for fabrics is now being applied for yarn dyeing and it is possible to process short batches of between 510,000 metres of yarn in order to produce 2300 metres of fabrics in a single continuous process. High temperature high pressure method polyester dyeing process. Report includes feasibility report, profitability analysis, raw materials, break even. Moreover, to maximize dyeing process efficiency and color performance properties, the textile fibers involved must be as clean as possible. If youve followed fiberartsy for a while, you know that over the years, i have explored many techniques for dyeing a variety of yarn colorways and patterns. Fiber dyeing is typically used to dye wool and other fibers that are used to produce yarns with two or more colors.

The most commonly used processes for imparting color to cotton are piece dyeing and yarn dyeing. Fiber dyeing is comparatively more costly than yarn, fabric, and product dyeing. Although cross dyeing is typically used for piece dyeing, it can also be used for product dyeing. Process of yarn dyeing on high temperature high pressure. Japan based teijin fibers has launched v4, a cationicdyeable polyester polymer which can be dyed at ambient temperature and pressure, and is also said to offer excellent fibre strength and sustainability. The dyeing process is one of the key factors in the successful trading of textile products. The central goal of preparation is the removal of both naturally occurring impurities and those which are added during yarn or fabric manufacturing. In yarn dyeing, dyestuff penetrates the fibers in the core of the yarn.

In this beginners guide for dyeing yarn and dyeing wool, im going to share with you the secrets i learned over many years of hand dyeing and working with various types of wool. The yarn is impregnated with a mixture of pigment and a binder and is drawn continuously through a roller nip to remove excess mixture. Flowchart of yarn dyeing can be divided into three stages. In addition to the design and beautiful color, the consumer usually looks for some basic product characteristics, such as good fixation with respect to light, perspiration and washing, both initially and after prolonged use.

In spun dyeing system the fibre is dyed before yarn spinning and knitting by dyeing of. Yarn dyeing is slightly difference from woven or knit dyeing. Pdf technical terms of textile dyeing awais imran academia. Cationicdyeable polyester bangladesh textile today. Some methods of yarn dyeing are stock, package, and skein dyeing. Pdf indigo ring dyeing of cotton warp yarns for denim fabric. Most textiles, whether in the form of garments or made ups, are used in color. A dyeing or printing process is complicated, since it involves fibre kinds, yarn or fabric structures, dyes and chemical auxiliaries, as well as dyeing technology.

In order to achieve the required dyeing or printing quality, all factors that may influence the dyeing or printing process must. The decision regarding the selection of colors has to be made early in the manufacturing process. Here are some examples of different techniques for yarn dyeing that can be done at home. Pdf dyeing is a process of applying coloring matter directly on fiber, yarn or fabric without any additives. Hthp yarn dyeing processes among the various yarn dyeing methods, most common one is high temperature high pressure hthp dyeing method. Learn a variety of yarn dye and wool dye methods with these 6 basic yarn dyeing techniques. The textile industry process is a lengthy one, with many steps to turn raw fibers into a useable product, such as a sweatshirt, bed sheets or bath towels. While industrial yarn dyeing takes place before the product is ever sold, many persons like to add their own unique touch of color as well. The common dyeing process of cotton yarn with reactive dyes at package form is as follows. These softened packages are loaded on a dyeing carriers spindle one on another. Indigo ring dyeing of cotton warp yarns for denim fabric. Normally, if the fabric is to be dyed, it goes straight to the dyer at that point. Planning for dyeing the fabric production planning for dyeing is called batch plan.

Visual representations of silk dying methods followed by varanasi dyers to reduce the silk dying cost of. Dyeing process can be vary depending on the individual procedure of a textile engineer or a dyeing. Dyeing of cotton with vat dye part 01 textile study center. Well, believe it or not, you can totally use your regular, everyday microwave. Improvement in dyeing process parameters a case study 17of solapur based textile sme avishkar solapur university research journal, vol. While cationic cotton helps address market demands and improve inventory and cost efficiencies, the greatest benefit of this technology is the reduction in water, energy, and chemicals wec in the dyeing process.