dyeing fibre by fibre

... for scCO2 dyeing of fibres that are difficult to dye by conventional water technology The machine is built by Hisaka Works Mitsubishi Rayon and Teijin as project partners are working on dyeing of ... disperse dyes to the fibre was increased by impregnation with swelling and crosslinking agents, and by modifications of the surface of the fibre with functional groups, as summarized by Bach et al (2002a) ... been published by Jasper (Jasper, 1993a, 1993b, 1993c, 1993d, 1993e) In 1994, one of the Jasper scCO2 -dyeing machines was installed by Amann & Söhne GmbH & Co Bönnigheim, Germany, for dyeing of PET...

Ngày tải lên: 12/08/2014, 02:22

... the existence of large supersaturations and thereby the formation of small solute particles Another variation is the solution-enhanced dispersion by supercritical fluids In this process, the supercritical ... thermal degradation of processed products Through the exploitation of the solvating power acquired by fluids near their critical points and the sensitivity of this power to small perturbations in ... the dissolution of supercritical carbon dioxide in melted or liquid-suspended substance and thereby generating the denominated gas-saturated solution or suspension, which is subsequently expanded...

Ngày tải lên: 31/03/2014, 22:20

... solubility issues Copyright 2002 by Marcel Dekker All Rights Reserved Structure Copyright 2002 by Marcel Dekker All Rights Reserved Structure (Continued) Copyright 2002 by Marcel Dekker All Rights ... or by any information storage and retrieval system, without permission in writing from the publisher Current printing (last digit): 10 PRINTED IN THE UNITED STATES OF AMERICA Copyright 2002 by ... Processing of Nanoscale Materials by Supercritical Fluid Technology Ya-Ping Sun, Harry W Rollins, Jayasundera Bandara, Jaouad M Meziani, and Christopher E Bunker Copyright 2002 by Marcel Dekker All Rights...

Ngày tải lên: 02/04/2014, 15:48

... textile dyeing unit The mode of wastewater generation was studied for two different types of dyeing, namely Jute and Cotton fabric dyeing Separate machines were employed in two types of dyeing, ... Manufacturing process of the textile dyeing unit The textile dyeing unit under the present study is situated at North 24 Parganas, West Bengal, India Both the continuous and batch dyeing processes are practiced ... and reuse of reactive dyeing effluents Chaman et al [8] highlighted on various options for biological treatment of textile dyeing effluent and compared its treatability by biosorption and membrane...

Ngày tải lên: 05/09/2013, 17:03

... compounds (e.g pesticides) – Works by ionizing a sample using a radioactive material (63Ni) This material ionizes the carrier gas – but this ionization current is quenched by a halogenated compound – ... chemistry  Adsorption onto silicates (via free silanol groups) on the silica column itself: avoided by deactivation reactions, usually leaving an OCH3 group instead Stationary Phases for GC  Target: ... conductivity (Hall) 0.5 pg/s (Cl) pg/s (S) pg/s (N) Photoionization pg/s Universal Compounds ionized by UV Fourier transform IR (FTIR) 0.2 to 40 ng Universal Organics  See pg 793 of Skoog et al 6th...

Ngày tải lên: 27/06/2014, 01:20

... the chromophore can be destroyed by over reduction 3.8 Wool fibre damage caused by SBH and hydrosulphite/NaOH vat dyeing methods Wool fibre damage was assessed by comparing the wet burst strength ... pretreatment Control of the dyeing process is discussed by Günay and enhancing the dyeability of fibers is reviewed by Gashti et al Details for dyeing specific fiber types are given by Gupta et al (polypropylene), ... Wool Fabrics Dyed with Vat Dyes (1% oww dye) by the SBH and Hydrosulphite Methods 30 Textile Dyeing 3.7 Effect of type of dyeing machine In a long liquor dyeing process, interchange of the dyebath...

Ngày tải lên: 29/06/2014, 08:20

... The reactive dye is bound to the fibre with a covalent ether bond and any reactive dye that did not become attached to the fibre will have been hydrolysed in the dyeing process and removed in the ... dyes 3.2 45 Historical aspects Colorants have been used by mankind for many thousands of years The earliest known use of a colorant was by Neanderthal man about 180 000 years ago They used red ... [Dye ] N N N R R Dyed fibre [5] Hydrolysis OH N [Dye ] N N R Hydrolysed, non-reactive dye [Dye ] SO2CH2CH2OSO3H [Dye ] SO2CH CH2 [6] 3.2 The fate of reactive dyes in the dyeing process © 2007,...

Ngày tải lên: 12/08/2014, 02:22

... surfactant-based dyeing auxiliaries (levelling agents, for example) are sufficiently detergent to allow scouring to be combined with dyeing 4.6 Dyeing, fibre by fibre 4.6.1 Cellulose Cotton is by far the ... Environmental aspects of textile dyeing Level dyeing A level dyeing refers to one in which dye is distributed evenly throughout the substrate Strictly speaking, each fibre should be fully and evenly ... reduces the need for post clearing, and reduces oligomer deposits.75–77 4.6.5 Dyeing acrylic fibres The dyeing of acrylic fibres presents few specific environmental challenges beyond those discussed...

Ngày tải lên: 12/08/2014, 02:22

... benefits derived by using RO are: ∑ ∑ ∑ ∑ Energy consumption reduced by 70% Water consumption reduced by 90% Chemical consumption reduced by 100% Time consumption per lot reduced by 60% The total ... during dyeing are as given below: ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ Use of the lowest possible liquor ratio in batch dyeing Optimisation of salt use for each individual dyeing Use of continuous dyeing or pad-batch dyeing ... Supercritical dyeing of synthetic fibres has been reported to be successful.50 Dyeing of natural fibres such as cotton, can also be performed from supercritical carbon dioxide after modifying it by reacting...

Ngày tải lên: 12/08/2014, 02:22

... Environmental aspects of textile dyeing Dyebath reuse through decolorisation techniques Dyeing M/C Dyeing M/C Dyeing M/C Dyeing M/C Dyeing M/C Dyeing M/C Dyeing M/C Dyeing M/C This is a more expensive ... each dyeing and ozonated to remove residual colour The recycled water was then reused in subsequent dyeings with the same dyes, after raising its pH to 11 by addition of alkali Five successive dyeing ... chemicals, depending upon the dyeing method, dyestuff class used and fibre to be dyed.97 When the cloths to be dyed are introduced into a dyebath, they pollute it by addition of foreign substances,...

Ngày tải lên: 12/08/2014, 02:22

... effluent by filtration Thereby, the chance of producing potentially toxic residual by products as in the degradation process would be minimized Laccases are already used industrially in hair dyeing ... effluent regulations on the dyeing industry’, Rev Prog Color, 21 56–71 Lang G, and Cotteret J (2002) Dyeing composition containing a laccase and keratinous fiber dyeing methods using same’, ... 2007, Woodhead Publishing Limited 216 Environmental aspects of textile dyeing Living fungi can decolorize dye solutions by means of real biodegradation (Chagas and Durrant, 2001; Swamy and Ramsay,...

Ngày tải lên: 12/08/2014, 02:22

... 251,252 Tejgaon Dhaka Bangladesh ©right FOAM DYEING In case of foam dyeing, the main dyeing elements is foam For that’s this dyeing is called foam dyeing A fabric is padded with a foam formed ... doctor blade: Here, foam application is done by indirectdoctor blade dosage and foam collapse is controlled by vacuum cylinder suction It is developed by “MONFORTS” Advantage 1) 2) 3) Better collapse ... fort on beer shaving foam etc Foam Dyeing TYPES OF FOAM: Broadly there are two types of foam namely • Dispersion foam • Condensation foam MATERIALS NEED FOR FOAM DYEING: White fabric - cotton, rayon,...

Ngày tải lên: 06/08/2015, 13:09

... forefront Types of Dyeing Machine Fibre Dyeing Machine Yarn Dyeing Machine Knit Dyeing Machine Woven Dyeing Machine Package Yarn Dyeing Machine (Vertical Type): Package Yarn Dyeing Machine (Horizontal ... of Jet Dyeing Machines: Overflow Dyeing Machine Soft-flow Dyeing Machine Airflow Dyeing Machine Overflow Dyeing Machine Functioning of a Overflow Dyeing Machine: A typical Overflow Dyeing ... jigger and beam dyeing units Principle: Jet dyeing is a process that can be used for batch dyeing operations such as dyeing, bleaching, washing and rinsing In this process, dyeing is accomplished...

Ngày tải lên: 11/08/2015, 00:04

Ngày tải lên: 21/02/2014, 16:20

Ngày tải lên: 08/03/2014, 13:20

... pressure drop obtained initially by passing the gas upward is of a relatively high magnitude, as depicted by line A–B in Figure 1.3 This figure is similar to one depicted by Zenz and Othmer1 and Barnea ... possible by top using agitator or vibrator to break the channels Electrostatic charges removed by using conductive solids or solids with graphite coating or column wall with oxide coating © 1999 by ... writing it C.K Gupta D Sathiyamoorthy © 1999 by CRC Press LLC Dedication No writer dwells in a vacuum; no author’s work is untouched, in one way or another, by associates, friends, and family The following...

Ngày tải lên: 02/04/2014, 14:57

... agreed upon When consensus was not achieved on any individual question by the conclusion of the meeting, deliberations continued by correspondence When voting was required to settle an issue, a two-thirds ... presented by less useful data [46] Such display technology should be easy to read, easy to navigate and customizable for a specific user's needs or role This could be accomplished either by displaying ... recommendations and/or directions for future research as appropriate We generated future research questions by identifying deficiencies in the literature and debating whether more evidence was necessary Where...

Ngày tải lên: 12/08/2014, 20:20

... and excellent fastness by using fixing agent Albafix E 1.4 OBD (One Batch Dyeing) : It is possible and recommended Cotton blended with polyester CVC/TC: Classic batch Dyeing (95% used right now ... Dyes: Water saving for 15 ton Fabric in Landmark: In existing Reactive dyeing process required water is 1351500 ltr In solophenyl dyeing process required water is 402000 ltr So we are saving 949500 ... Batch Dyeing (International Std Time & water needed 3-4 hrs, & 30-40 ltrs & in our trial we met the international standard)  Lab Dip report of S.D Black (100%Cotton) (4% shade) (2 Batch dyeing) ...

Ngày tải lên: 30/07/2015, 10:34

... Disadvantage Investment Solve colorants Time of process Dyeing Procedure Dyeing of polyester Supercritical CO2dyeings were performed using an SFE 400 supplied by SUPELCO, equipped with a 50 cm3 internal ... shorter dyeing times compared to water Compared to water dyeing, the extraction of spinning oils, the dyeing and the removal of excess dye can all be carried out in one plant in the carbon dioxide dyeing ... reported in Fig Variations in dye uptake (Df) by the fibre as a function of pressure at constant temp(800C) Table Variation in dye uptake by the fibre as a function of pressure at constant temp...

Ngày tải lên: 06/08/2015, 13:08