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weighting of silk ppt

Raw silk with gum still on filament is called hard silk. Owing to the expensive nature of silk, it is necessary to compensate the weight loss. From shop AStrawberryHobgoblin. To compensate the loss, some weight is artificially added to the material by chemical means. Rinsing – Rinse by stirring and squeezing the silk by hand in demineralized water (or water at 0º Hydrotimetric). Weighting with some metallic salts did improve the drapeability of the fibre; however greedy merchants soon began adding more weight than the lost one-fifth; sometimes the final weight was increased tenfold. This all have been made possible with in the last three years. Historically this is the highly desired fibre which has been used extensively for apparels, home Shiny silk … 20. Re-position your body if possible. Later it is treated with sodium phosphate called Phosphating. This process was called weighting, and by increasing the weight of the raw silk, the merchant increased his profit. He is working as a consultant in several local and international companies. Finally after sufficient loading it is treated with Sodium Silicate. To compensate the loss, some weight is artificially added to the material by chemical means. Mazharul Islam Kiron is a textile consultant, entrepreneur, blogger and researcher on online business promotion. This does not imply that the fabric is gray in colour; it simply denotes any unfinished fabric. This loss in weight leads to a great loss of money since they are very expensive. You can see the change in the texture already, but the real changes will show more once it's dry. One third of weight of fabric is lost when sericin gum is removed in this way. In this method the fixation is done with sodium silicate. All foods made from meat, poultry, seafood, beans and peas, eggs, processed soy products, nuts, and seeds are considered part of the Protein diet.These protein diets and related related researches plays important role in athletes and sportsperson. SILK- a natural fibre Silk –often referred to as “The Queen of Textiles” is the strongest natural fibre lustrous, smooth, inherent affinity for dyes, vibrant colours, having high absorbent and light weight qualities excellent drape and elastic properties. You’ll often see sutures and stitches referred to interchangeably. Many teachers and other employees have to stand for long periods of time. Hot water. Silk is a continuous filament fiber. Weighting is also done to reduce limpness. Read article about Silk Fibre Production and Application - Silk fiber is a filament spun by the caterpillars of various butter flies. Clipping is a handy way to collect important slides you want to go back to later. In the normal practice silk is soaked in stannic chloride solution called Picking. Stannic chloride + sodium phosphate Tin phosphate, Tin phosphate + sodium silicate Tri silicate of tin, Parts of a Sewing Machine and Their Functions | Different Parts of Hand Operated Sewing Machine, Textile Calculation | Different Formula of Textile Calculation, Types of Bra | Different Types of Bra/Brassiere for Women, Printing Method | Method of Printing | Printing Processes | Different Types of Printing Method | Block Printing | Roller Printing | Screen Printing | Transfer Printing | Heat Transfer Printing | Ink-Jet Printing | Carpet Printing | Warp Printing | Resist Printing | Photographic Printing | Pigment Printing | Blotch Printing | Burn-Out Printing | Direct Printing | Discharge Printing | Duplex Printing, Dyeing Process | Different Types of Dyes | Classification of Dyes, Process Flow Chart of Garments Manufacturing | Sequence of Garments Production Process, Textile Manufacturing Process | Process Flow Chart of Textile Manufacturing, Characteristics of Silk Fabrics | Properties of Silk Fabrics. The picking and Phosphating is carried out alternatively till the sufficient weight is achieved and the sequence is: Picking washing - Phosphating - acidifying. is 1.34 g/cm cube which makes it a medium weight fibre. mendedbytheTechnicalCommitteeonWeightedSilk,silkweighted with tin phosphate without silicate requiresa treatmentwith dilute hydrochloric acidsolutionaswellas with hydrofluoric acid. Shift weight from foot to foot. Resistance to Mildew: Silk will not mildew unless left for some time in a damp state or under the extreme conditions of tropical dampness. Object of Silk Weighting: After the processing of silk material, it loses about 25% of its weight particularly after degumming. Scale (I have a scale for weighing fiber amounts and a more precise jewelers scale for weighing dyes). The temperature should be 60ºC and the volume of water at least 25 times the weight of the silk. Silk. Presence of sericin in silk would cause negative effects in terms of silk performance as a textile fabric especially in dyeing. it could hold around 50–60% by weight in addition. This loss in weight leads to a great loss of money since they are very expensive. Let's Get Connected: LinkedIn | Facebook | Email: textilelearners@gmail.com. After degumming, the skein weighs 19.45 grams, which means that it's lost 5.48 grams, or about 22% of its original weight. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. This is the still-damp silk. Silk weighting: This loss of 20–30% weight would be compensated even more weight to the silk is being added during weighting process. During degumming of silk, a weight loss of 25% is normally observed in case of silk fabrics. “Weighting” is a textile manufacturing practice peculiar to silk manufacturing and involves the application of metallic salts to add body, luster and physical weight to silk fabric. These elements were classified by Lavoisier in to … The silk is soaked in stannic chloride and the fixed with sodium phosphate. Momme weight is a standard way of measuring the weight of silk as well as a common way to measure pearls. Silk has better absorption properties i.e. If standing for an extended period: Stand with feet shoulder width apart. Measuring cup. Mineral fibers are those that are mined from the earth. It is then washed and treated with little amount of sulphuric acid. Called the Goddess of the Silkworm, Si-Ling apparently raised … Pritchard et al. This brings out the required increase in weight without affecting the strength much. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Ancient literature, however, attributes the popularization of silk to the Chinese Empress Si-Ling, to around 2600 B.C. Textile - Textile - Types of yarn: Yarns can be described as single, or one-ply; ply, plied, or folded; or as cord, including cable and hawser types. Silk fibers that were degummed with sodium carbonate for 10 min showed a molecular weight distribution predominantly in the 171–460 kDa range, while silk that was degummed for 30 min showed a molecular weight distribution ranging from ~ 31 to … Considered to be among the most expensive varieties of silk sarees in the world, these soft and light pattu Momme is pronounced much like the word "mummy." Acid Dyes (I have a variety of Dharma, Jacquard, and ProChem dyes). Even though increase in weight is considerable, the strength loss is still high in this method. Presents ; Pattu Silk Sarees; 2 (No Transcript) 3 The Soft Pattu Sarees of South India. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Except for silk, all natural cellulose- and protein-based fibers are obtained in short lengths and are called staple fibers. Sericin is also very weather resistant since it can withstand prolonged weather exposure. See our User Agreement and Privacy Policy. Also sugar (mostly used), glucose, gelatin, glycerin and paraffins are used. Weighted Silk Eye Pillow w/ removable, washable case - made from 100% upcycled fabrics - great for yoga, meditation, or headache relief AStrawberryHobgoblin. introduction,lifecycle,processing,properties,advantages, disadvantages and end application of silk. Marginal weight increase is observed but the strength is also adversely affected in this method. For silk pajamas a momme weight of 12-16 is considered good quality with silk pajamas in the range of 19-25 being very high quality. A braided synthetic suture. Looks like you’ve clipped this slide to already. Synthrapol(or similar textile detergent) . He is also a contributor of Wikipedia. Silk is sold by weight. Tin salts are widely used for silk weighting. The processing of water-soluble high molecular weight silk proteins into water-insoluble fibers by both spiders and silkworms involves many factors, including disulfide bond formation, cation interactions, glycosylation and perhaps other chemical or physical steps. 1 Metals And Their Properties- Physical and Chemical All the things around us are made of 100 or so elements. By means of weighting the manufacturer can increase the weight of silk by 3 to 4 times. Glorious looking and light weight, pattu silk sarees hail from south of India. Raw silk is more resistant to light than degummed silk and weighted silk has the least light resistance. A class name for various genera of fibers (including filaments) of: (1) animal (i.e.,silk fiber, wool fiber) The weighting substances in the silk includes tannins such as salts or iron, tin (mostly used), chromium, sodium, magnesium and barium. It feels almost like cotton and is easy to sew. 20–30% of weight in raw silk is sericin content. PPT-133-01. Place one foot slightly behind other. If you continue browsing the site, you agree to the use of cookies on this website. You can change your ad preferences anytime. Silk has set the standard in luxury fabrics for several millennia. After the processing of silk material, it loses about 25% of its weight particularly after degumming. Sutures vs. stitches. The normal range is 65 to 84 percent for the weight of the cocoon shell and 12 to 20 percent for the weight of the whole fresh cocoon. This sericin gives raw silk a coarser handle. It caused a transfer of assets form real-estate and financial sphere to investment into commodities that are traditionally considered as a stable store of values. The thickness of silk filament yarn is expressed in terms of denier, the number of grams of weight per 9,000 metres (9,846 yards) of length. Finishes may change the appearance of the fabric, its texture , its serviceability and its durability. Volume of solution : 35 times the weight of silk. The goods must pass through various finishing processes to make it suitable for its intended end use. Silk drapery and upholstery fabrics should be protected from direct exposure to the light. The reason for adding metals to silk fabric is to increase the weight of the fabric and, because silk fabric sells by the pound, the extra weight increases the selling price of the fabric. Carbonate sodium (CO 3 Na 2) : 0.3 g per litre of water in the solution. * by Raj-Rajendran * Silk : From Soil to Neck Tie.. UTEXRWA in Rwanda, is the only company in the whole world having a fully – vertically integrated Silk production facility, from Soil to neck- Tie (final product) under one roof. Medium-weight silk. See our Privacy Policy and User Agreement for details. Silk Spun silk: Short length of silk fibers obtained from the various silk waste are not used in reeled silk and in making thrown silk yarns but these are spun into yarns just like cotton, linen or wool yarns. A braided natural suture. A newly constructed fabric as it comes from the mill is known as greige goods or gray goods. Use a thumb rule of thread count X 42/ yarn count to have the approximate weight of the fabric per mt For silk, there are two particularly important historic processing methods -weighting and bleaching. raw silk strand consists of two silk filaments encased by a protein called sericin. The silk is soaked with stannic chloride solution followed by fixation with sodium carbonate followed by soaping. also reported results indicating that an increase in degumming time corresponded with a decrease in protein molecular weight (Pritchard et al., 2013). In 1938 the U.S. Federal Trade Commission ruled that silk that weighted more than 10… If you continue browsing the site, you agree to the use of cookies on this website. Legend has it that a Chinese princess was sipping tea in her garden when a cocoon fell into her cup, and the hot tea loosened the long strand of silk. Initially, some degree of self-organization or assembly drives the formation of the crystalline β-sheet regions in the protein fibers. Silk (for this Instructable I used silk noil). Polyester (Ethibond). An original saree with pure silk and pure zari can cost anywhere between Rs.7,000 and Rs.2,00,000. Financial crisis that caused meltdown of the economy started 2008-2009. Silk pretreatment R.B.Chavan Department of Textile Technology Indian Institute of Technology Hauz-Khas, New Delhi 110016 Know your Silk Momme - Sillk Valuation and Weight Fabrics.net One of the most significant differences, is that the skein loses a lot of weight! Control of silk fibroin concentration in aqueous solutions via osmotic stress was studied to assess relationships to gel formation and structural, morphological, and functional (mechanical) changes associated with this process. Filament length Equally important as the percentage of silk shell is measuring the length of the bave contained in the shell. The origins of silk date back to Ancient China. Title: Pattu Silk Sarees from South India 1 Shatika. The process of increasing the weight of the silk material is known as weighting of silk. It is suitable to make tailored clothes and shirts with the fabric as it holds creases well and has a tight weave, but wrinkles less. It is a delight to make clothes with this fabric. fabric weight can also be measure through this farmula, 1)(EPI/Warp count*27.5)+(PPI/Weft count*24.5) 2)To calculate the weight of the fabric you should know the numbers of thread count and the yarn count. * by Raj-Rajendran * Our Further Development.. Silk is sometimes—in a process called weighting —treated with a finishing substance, such as metallic salts, to increase weight, add density, and improve draping quality. No public clipboards found for this slide. Now customize the name of a clipboard to store your clips.

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