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Selection of dye according to fibre character

June 22, 2012 0

00 a.Acid dye: Man made (Synthetic nylon) & Natural protein fibre (wool, silk) b.Azoic dye: Man made & Natural cellulosic fibre (Cotton, Viscose) c.Direct dye:Man made & Natural cellulosic fibre (Cotton, Viscose) d.Disperse dye: Mane made ester, cellulosic & synthetic fibres specially the acetate fibres & Polyester & less of acrylic & nylon fibre. e.Reactive …

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Categories Wet Processing Tags acid dye, azoic dye, basic dye, dye, dye selection, dye used, dyes, Pigment, ractive dye, types of dye, vat dye

Dyeing of Nylon and silk with acid dye

June 22, 2012 0

00 Dyeing of Nylon with acid dye: Nylon-NH2 + H+                                         Nylon-NH3+ Nylon-NH3+ + DSO3–                                 Nylon-NH3+O3–SD   Recipe: Dye X% Acetic acid or ammonium acetate 3-5% Gluber salt 10% Temperature Boiling temperature M: L 1:2 Time 75 minutes   Dyeing of silk with acid dye: The affinity of acid dye for silk fibres are good. But …

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Categories Wet Processing Tags acid dye, nylon, silk

Dyeing of wool with acid dye

June 22, 2012 0

00The application of acid dye on protein fibres results in an ionic or Soult lime between the dye molecule & the fibre polymer. The point of the fibre polymer at which the dye is attached is termed the dye site. In wool the dye sites are the many amino groups of fibre under dyeing conditions. …

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Categories Wet Processing Tags acid dye, dye, dyeing, wool, wool dyeing

Acid Dye and its properties and Classification

June 21, 2012 0

00Acid dyes are Na- salt of sulphonic acid. But there are a few containing carboxyl groups. Acid dyes are applied in acid medium. That’s why these dyes are called Acid Dye. Acid dye have a direct affinity towards protein fiber and the main class are used in Wool Dyeing. Polyamide fibers have an affinity for …

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Categories Wet Processing Tags acid dye, acid dye properties, dye, dye classification, dye properties, dyeing

Bleaching in J-Box

June 21, 2012 0

00 Standard Recipe :             Water ——————–97 gallons             Sodium silicate ——— 15 pounds             Caustic Soda ———— 2 pounds             Hydrogen Peroxide —- 1.5 pounds Working Procedure : The fabric padding with impregnation box Then the fabric is stored in the J-box for 60 to 90 minutes at 95-100ºC temperature. Then wash with 2% …

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Categories Wet Processing Tags Bleach, bleaching, j-box, jbox bleaching

Bleaching In Kier Boiler

June 21, 2012 0

00 Standard Recipe : Hydrogen Peroxide ———————— 3-5% Sodium Silicate —————————– 2-3% Caustic Soda ——————————– 0.3-0.8% Soda Ash ————————————- 0.6-1.0% Wetting Agent ——————————- As Required Working Procedure Normal 0 false false false MicrosoftInternetExplorer4 The Chemical are dissolved in a mixing tank Transfer to the Kier Required Water added to fill one third of the Kier …

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Categories Wet Processing Tags Bleach, bleaching, keir boiler, keir boiler bleaching, kier boiler, kier boiler bleaching

Polyester Fiber- It’s Manufacturing Process and Uses

June 20, 2012 0

10Polyester Fiber Polyester is a class of polymers which accommodate the ester anatomic accumulation in their capital chain. Although there are abounding polyesters, the appellation “polyester” as a specific actual a lot of frequently refers to polyethylene terephthalate (PET). Fiber manufacturing process: Today over 70 to 75% of polyester is produced by CP (continuous polymerization) …

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Categories Spinning / Yarn Manufacturing, Technical Textile Tags fiber, fiber manufacturing, polyester, polyester fiber, process of fiber, Textile Fiber

Hydrogen Peroxide Bleaching

June 19, 2012 2

00Required Chemical Hydrogen Peroxide (H2O2) Stabilizer Caustic Soda Soda Ash Wetting Agent Function Of Required Chemical Hydrogen Peroxide: It ionize as H2O2——— (H+) and (HO2-), where HO2- is responsible for bleaching operation. Stabilizer : To stabilize the reaction H2O2———( H++ HO2– ) Due to H2O2 reacts with fabric randomly. By using stabilizer the treatment becomes …

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Categories Wet Processing Tags Bleach, bleaching, hydrogen peroxide, peroxide bleaching

Hypochlorite Bleaching

June 11, 2012 0

00Calcium Hypochlorite or Sodium Hypochlorite may be used in Hypochlorite bleaching. Calcium Hypochlorite has cheap sources and hence less expensive than sodium Hypochlorite. But sodium Hypochlorite has some technical advantages. q Common Recipe : Hypochlorite Wetting Agent Soda Ash Temperature Bleaching Action: When calcium hypochlorite or sodium Hypochlorite is hydrolyzed, hypochlorous acid is formed which …

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Categories Wet Processing Tags Bleach, bleaching, bleaching process, calciaum hypochlorite, Denim Bleach, hypochlorite bleach, sodium hypochlorite

Bleaching

June 11, 2012 0

00 Bleaching Reduction of natural coloring matter to produce white fabric and must be accomplished with a minimum damage of cotton being bleached.   Objectives of Bleaching To impart a pure permanent and basic white effect to the fabric. To increase the absorbency of the fabric. To produce white finishes To make textile material suitable …

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Categories Technical Textile, Wet Processing Tags Bleach, bleaching, bleaching process, oxidizing bleach, reducing bleach, types of bleach
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