Environment friendly finishes cii prentation
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The document discusses developments in eco-friendly finishes for cotton fabrics and garments. It outlines several finishing techniques that can make cotton more sustainable and environmentally-friendly, such as organic cotton cultivation, naturally dyed cotton, and cross-linking agents that are safer alternatives to formaldehyde. New finishes are also explored, like breathable water-resistant coatings, bio-finishing using cellulases, antimicrobial treatments, and emerging technologies like Nano encapsulation of fibers. The conclusion states that applying functional finishes can enhance cotton properties while adding value and that new concepts will continue to be developed to create eco-friendly cotton textiles.
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Environment friendly finishes cii prentation
The document discusses developments in eco-friendly finishes for cotton fabrics and garments. It outlines several finishing techniques that can make cotton more sustainable and environmentally-friendly, such as organic cotton cultivation, naturally dyed cotton, and cross-linking agents that are safer alternatives to formaldehyde. New techniques are also explored, like the NexTec process that can encapsulate fibers to impart multiple functional properties at once, as well as using genetic engineering to develop novel cotton varieties. The conclusion states that applying functional finishes can enhance cotton's qualities while adding value, and many innovative ideas for more sustainable textile finishing are currently being explored.
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The textile industry poses major environmental hazards due to its extensive use of chemicals and water throughout the manufacturing process. It releases billions of gallons of wastewater contaminated with dyes, bleaches, and other chemicals each year. O Ecotextiles aims to raise awareness of these issues and produce fabrics through non-toxic, sustainable methods like using organic fibers that don't require pesticides, treating wastewater before release, and employing natural dyes and finishes. It advocates for environmentally preferable practices across the textile industry to reduce pollution and promote sustainability.
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Indian textile industry environment issue ppt, nitra
The document discusses the Indian textile industry and environmental issues. It provides an overview of the structure and history of the textile industry in India. It describes the various environmental impacts of the textile industry including air and water pollution from dyeing and finishing processes. It also outlines strategies for pollution control, including cleaner production techniques and end-of-pipe wastewater treatments.
Environment friendly finishes cii prentation
The document discusses developments in environmentally friendly finishes for cotton fabrics and garments. It covers topics like eco-friendly cotton cultivation, naturally colored cotton, functional finishes like wrinkle-free and waterproof breathable treatments. It also discusses finishes using bio and enzymatic methods as well as anti-microbial finishes. The goal is to make cotton production and the finishing process more sustainable and reduce environmental pollution.
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The document discusses the development of an eco-friendly synthetic fibre made from corn. It notes that depleting fossil fuels and environmental pollution present future challenges for textile production. Researchers developed a new biodegradable polyester fibre using corn as a renewable raw material. The fibre is produced through a process involving milling corn starch, fermenting it to lactic acid, producing an intermediate called lactide, and polymerizing lactide into polylactic acid fibres through ring opening polymerization. The resulting fibre has properties including rapid wicking, excellent hand feel and resilience, wrinkle resistance, and UV and stain resistance while being biodegradable.
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The document discusses various methods for making cotton dyeing more environmentally friendly. It focuses on reducing the amount of dyes, salts, and other chemicals released in effluents. Some key methods mentioned are using bifunctional reactive dyes for lower color effluents, low salt reactive dyes to reduce salt, replacing sodium hydrosulfite and sodium sulfide reducing agents, and dyeing at lower liquor ratios. The goal is to meet environmental standards while maintaining dye yield and fabric quality.
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The document discusses developments in eco-friendly finishes for cotton fabrics and garments. It describes how conventional cotton cultivation uses chemicals that pollute water, and introduces organic cotton cultivation methods. It also discusses naturally colored cotton cultivation to eliminate dyeing pollution. Various eco-friendly functional finishes are explained, including wrinkle-free finishes using polycarboxylic acids or silicone softeners instead of formaldehyde-based chemicals. The document provides details on application methods and quality control for eco-friendly finishes.
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The document discusses the development of an eco-friendly synthetic fibre made from corn. It notes that depleting fossil fuels and environmental pollution present future challenges for textile production. Researchers developed a new biodegradable polyester fibre using corn as a renewable raw material. The production process involves milling corn to extract starch, fermenting the starch to produce lactic acid, and polymerizing lactic acid to form polylactic acid fibres. The resulting fibre has properties ranging from silk-like to cotton-like qualities while being biodegradable.
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The document discusses the development of an eco-friendly synthetic fibre made from corn. It notes that depleting fossil fuels and environmental pollution present future challenges for textile production. Researchers developed a new biodegradable polyester fibre using corn as a renewable raw material. The fibre is produced through a process involving milling corn starch, fermenting it to lactic acid, producing an intermediate called lactide, and polymerizing lactide into polylactic acid fibres through ring opening polymerization. The resulting fibre has properties including rapid wicking, excellent hand feel and resilience, wrinkle resistance, and UV and stain resistance while being biodegradable.
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The document discusses the development of an eco-friendly synthetic fibre made from corn. It notes that depleting fossil fuels and environmental pollution present future challenges for textile production. Researchers developed a new biodegradable polyester fibre using corn as a renewable raw material. The production process involves milling corn to extract starch, fermenting the starch to produce lactic acid, and polymerizing lactic acid to form polylactic acid fibres. The resulting fibre has properties ranging from silk-like to cotton-like qualities while being biodegradable.
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The document discusses the development of an eco-friendly synthetic fibre made from corn. It notes that depleting fossil fuels and environmental pollution present future challenges for textile production. Researchers developed a new biodegradable polyester fibre using corn as a renewable raw material. The fibre is produced through a process involving milling corn starch, fermenting it to lactic acid, producing an intermediate called lactide, and polymerizing lactide into polylactic acid fibres through ring opening polymerization. The resulting fibre has properties including rapid wicking, excellent hand feel and resilience, wrinkle resistance, and UV and stain resistance while being biodegradable.
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The document discusses various eco-friendly textile finishing techniques and practices adopted by manufacturers, including plasma treatment, sandblasting, laser treatment, enzymatic action, nanotechnology, stonewashing, microencapsulation, and ultrasonic wet processing. Plasma treatment modifies fabric surfaces physically and chemically without altering bulk characteristics. Sandblasting gives fabrics a worn look but uses silica sand that can be hazardous. Laser treatment and enzymatic action alter fabric surfaces without chemicals. Nanotechnology and microencapsulation impart functional finishes. Stonewashing and ultrasonic wet processing are also discussed.
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The document discusses various waste minimization techniques used in the textile industry, including case studies. It describes optimizing processes like dyeing to reduce water and chemical usage. Specific examples include using low-salt reactive dyes that reduce salt loads in effluent and substituting chemicals like acetic acid with less polluting alternatives. An effluent treatment plant case study showed implementing these techniques helped meet pollution control standards.
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The document discusses various waste minimization techniques used in the textile industry, including process optimizations, chemical substitutions, and effluent treatment. Specific examples include replacing starch with PVA in sizing, using low-salt reactive dyes, lowering liquor ratios in dyeing, and treating effluent with screening, equalization, coagulation, sedimentation, and activated sludge processes. A case study describes measures taken at a textile mill in India that reduced total effluent volume by 25,000 liters per day and pollution load by 40-45% through various waste reduction efforts.
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Dyeing of polyester
The document discusses various methods for dyeing polyester fibers, including:
1) Batch dyeing without carriers involves dyeing at a boil without additives to help penetration.
2) Carrier dyeing uses compounds to swell the fibers and allow deeper dye penetration.
3) High temperature, high pressure (HTHP) dyeing penetrates dye rapidly at 120-130°C without carriers.
4) Continuous thermosol dyeing involves padding, drying, and fixing dye within fibers at 190-220°C.
3. digital printing technologies
The document discusses various digital printing technologies, focusing on inkjet printing methods. It describes two main inkjet technologies: continuous inkjet (CIJ) and drop-on-demand (DOD). CIJ uses a continuous stream of ink broken into droplets through pressure, while DOD only deposits ink droplets when needed in response to digital signals. Common DOD methods are thermal bubble jet and piezoelectric, with the latter providing higher resolution and suitability for wider ranges of inks. The technologies each have advantages and limitations for different applications like textile printing.
93, 94 introduction to digital printing
This document compares and contrasts analog and digital printing technologies. It discusses the advantages and disadvantages of each, such as analog printing being better for mass production while digital is more suitable for variable, personalized, or short print runs. The document also examines factors to consider when choosing a printing method like image quality, production speed, and cost. Additionally, it describes how some systems combine analog and digital to leverage the strengths of both.
4. essential elements for inkjet printing
This document discusses the essential elements required for inkjet printing of textiles. It outlines the necessary hardware including computers, software, printers, and fabric pre-treatment machines. It also discusses ink requirements including formulations for different fiber types and extended color gamuts. Finally, it addresses challenges in commercializing the technology such as printing speeds and the future potential of digital printing for mass customization and integrated production systems.
Digital printing asian dyer extended version)
Digital printing offers several advantages over conventional analog printing methods for textiles. It allows for mass customization and quick turnaround due to minimal press setup times. Digital printing can change color schemes or designs in real time during production. It also produces less waste and has a lower environmental impact than screen printing. However, digital printing has lower throughput than analog methods and higher costs for long runs. It also requires specially coated substrates and has limitations in ink color options and opacity.
Dyeing of polyester
The document discusses various methods for dyeing polyester fibers, including:
1) Batch dyeing without carriers involves dyeing at a boil without additives to help penetration.
2) Carrier dyeing uses compounds to swell the fibers and allow deeper dye penetration.
3) High temperature, high pressure (HTHP) dyeing penetrates dye rapidly at over 120°C without carriers.
4) Continuous thermosol dyeing involves padding, drying, and fixing dye within fibers at 190-220°C.
Dyeing of pet wool blends
This document discusses methods for high temperature dyeing of wool-polyester blends to minimize damage to the wool. It recommends using formaldehyde or similar agents to protect the wool at temperatures up to 120°C. Specific dyeing times and temperatures are provided for different levels of wool protection. One-bath and two-bath dyeing methods are described that allow deep shades while reducing staining of the wool component. Post-treatment and troubleshooting steps are also outlined.
Dyeing of cotton with vat dyes
This document summarizes the key properties and processes involved in dyeing cotton with vat dyes. Vat dyes are insoluble in water but can be converted to a water-soluble form through a process called vatting, which involves reducing the dye and forming a salt. The water-soluble form dyes cotton fibers, and is then re-oxidized inside the fibers. The dyeing process involves steps of reduction, dyeing, oxidation, and soaping to achieve bright shades and fastness properties.
Dyeing of polyamide fibres
This document discusses the dyeing of polyamide fibers like wool, silk, and nylon. It explains the dyeing mechanisms and how the structure of polyamide fibers allows them to be dyed using different dye classes like acid dyes, chrome dyes, and reactive dyes depending on the desired properties like colorfastness. Factors like pH, temperature, and use of leveling agents affect dye uptake and uniformity. Different types of acid dyes provide varying colorfastness and are suitable for different applications depending on those properties.
Indroduction to printing
The document discusses different types of textile printing methods. It begins by distinguishing between dyeing and printing, noting that dyeing results in uniform coloration while printing applies color locally in designs. It then covers various printing styles like direct, resist, and discharge printing. The document concludes by describing common printing methods such as block, stencil, roller, screen, and digital printing.
General composition of print paste
The document summarizes the general composition and essential qualities of print pastes used in textile printing. Print pastes typically contain dyestuffs, thickeners, solvents, humectants, oxidizing agents, and defoaming agents. Thickeners are important for ensuring the print paste sinks into the fabric quickly and adheres properly after printing and drying. Other components like hydroscopic agents and pH controllers help facilitate dye fixation during steam treatment. Proper selection and balance of ingredients is necessary for achieving high quality, well-defined prints on fabrics.
Pigment printing
There are key differences between dye and pigment printing. Pigments have no affinity for fibers and are insoluble in water, requiring a binder to fix them onto fibers. Dyes have affinity for fibers and are water soluble. Pigment printing uses a binder that is an aqueous emulsion copolymer which polymerizes during curing to form a strong film embedding the pigment and adhering it to the fiber. Suitable thickeners for pigment printing are emulsion or synthetic thickeners which do not interact negatively with the binder. Emulsion thickeners are prepared using oil, water, emulsifiers and other agents, while synthetic thickeners are high molecular weight copolymers that thicken when
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