Textile finishing involves processes that textiles undergo after pretreatment, dyeing, or printing to enhance their attractiveness, comfort, and usefulness. Finishing can improve fabric appearance through processes like calendaring or optical brightening, or alter fabric handle through softening or stiffening. Finishing also improves fabric serviceability by adding properties like flame resistance, water resistance, or easy care attributes. Finishing methods are classified as aesthetic, functional, temporary, permanent, or semi-permanent and involve chemical or mechanical processes. Common mechanical processes include calendaring, brushing, singeing, tentering, and raising. Chemical processes include softening, hardening, resin finishing, mercerization, and fire resistant or antimicrobial
Softener is an finishing agent that when applied to textile material improves its handle giving pleasing touch. As a general rule, the softening agents applied are lubricating agents, which facilitate the fiber sliding within the fabric structure, thus granting easier deformation and creasing of the fabric.
importance of fibre finess,influences of fibre finess ,effect on stiffness , effect on torsional rigidity, reflection of light , dye absoprtion, method of measurement ,gravimetric method, micronaire
Basic knowledge about blend dyeing
Dyeing of Blended Fibres & Fabrics
Blends:
Blends are any textile material from fiber through yarn to fabric which are deliberate combination of chemically or physically different fibrous polymer. Cotton and Polyester blend is an example of chemically different blend and Cotton and Viscose is physically different blend because both are cellulosic.
Reason for blending:
1.Economy: The dilution of an expensive fibre by blending with a cheaper substitute.
2.Durability: The incorporation of a more durable component to extend the useful life of a relatively fragile fibre.
3.Physical properties: A compromise to take advantage of desirable performance charactristics contribuition by both fibre components.
4.Color: The development of new fabric design for garments incorporating multicolor effect.
5.Appearance: The attainment of attractive appearance & perceptible qualities using combinations of yarns of different lusture, crimp or denier which still differ in appearance even when dyed with same color.
6.Other reasons-
Blending develops fibre properties.
Colorant modification is possible by blending.
Finishing process modification.
Improved moisture absorption, antistatic characteristics, reduced pilling, improved abrasion resistance.
Dyeing Possibilities with Blends:
1.Union Dyeing:
• This is suitable for fabrics containing two fibres to dye them in a single uniform colour, each dye suitable for one kind of fibre in the blend.
• Union dyeing is same as cross dyeing except that instead of multi-colour effects. One solid colour is produced. The dyer accomplishes this by using two or more classes of dye, each of the same colours.
• Different fibres may require different dyes to obtain the same colour; this may be done by putting the appropriate colour dye that is specific to each type of fibre in to one dye bath.
• For eg: a fabric composed of rayon and acetate can be dyed with a solid colour green by using a direct dye for the rayon, and a disperse dye of the same colour for the acetate.
2.Resist/Reserve dyeing:
• In resist dyeing at least one (but not all) of the components of the blend remains essentially undyed i.e almost white.
3.Cross dyeing:
• Cross dyeing produces fibres of contrasting color
• This is two types-
a)Shadow effect/Tone-in-Tone dyeing:
Two fibres are dyed in same hue & brightness but the depth is different. It is called tone-in-tone or shadow effect.
b)Contrast effect:
Two fibres are dyed with strong difference in hue, brightness & depth.This is called contrast effect. Pleasing final appearance is important here.
this slide in mercerization is prepared in chemical processing in textile and it could help a lot of students or lecturers who might be looking for web handout, presentation or seminar. it is openly accessible for all.
Printing means localized application of dyes on the fabric according to design. For printing it is required to produce printing paste. Printing Paste is a viscous paste which is made from pigments, thickeners and many of chemical. A good printing paste is mainly responsible for good printing effect. So it is very important to make a printing paste. There are different types of ingredients are used to make printing paste
Generally following ingredients are used in printing paste:
Dyestuffs or pigment.
Wetting agents.
Thickener.
Solvents dispersing agents.
Defoaming agents.
Oxidizing and reducing agents.
Catalyst and oxygen carrier.
Acid and alkali.
Career and swelling agent.
Miscellaneous agent
Flocking is defined as the application of fine particles to adhesive coated surfaces. Nowadays, this is usually done by the application of a high-voltage electric field. In a flocking machine the "flock" is given a negative charge whilst the substrate is earthed. Flock material flies vertically onto the substrate attaching to previously applied glue.
Softener is an finishing agent that when applied to textile material improves its handle giving pleasing touch. As a general rule, the softening agents applied are lubricating agents, which facilitate the fiber sliding within the fabric structure, thus granting easier deformation and creasing of the fabric.
importance of fibre finess,influences of fibre finess ,effect on stiffness , effect on torsional rigidity, reflection of light , dye absoprtion, method of measurement ,gravimetric method, micronaire
Basic knowledge about blend dyeing
Dyeing of Blended Fibres & Fabrics
Blends:
Blends are any textile material from fiber through yarn to fabric which are deliberate combination of chemically or physically different fibrous polymer. Cotton and Polyester blend is an example of chemically different blend and Cotton and Viscose is physically different blend because both are cellulosic.
Reason for blending:
1.Economy: The dilution of an expensive fibre by blending with a cheaper substitute.
2.Durability: The incorporation of a more durable component to extend the useful life of a relatively fragile fibre.
3.Physical properties: A compromise to take advantage of desirable performance charactristics contribuition by both fibre components.
4.Color: The development of new fabric design for garments incorporating multicolor effect.
5.Appearance: The attainment of attractive appearance & perceptible qualities using combinations of yarns of different lusture, crimp or denier which still differ in appearance even when dyed with same color.
6.Other reasons-
Blending develops fibre properties.
Colorant modification is possible by blending.
Finishing process modification.
Improved moisture absorption, antistatic characteristics, reduced pilling, improved abrasion resistance.
Dyeing Possibilities with Blends:
1.Union Dyeing:
• This is suitable for fabrics containing two fibres to dye them in a single uniform colour, each dye suitable for one kind of fibre in the blend.
• Union dyeing is same as cross dyeing except that instead of multi-colour effects. One solid colour is produced. The dyer accomplishes this by using two or more classes of dye, each of the same colours.
• Different fibres may require different dyes to obtain the same colour; this may be done by putting the appropriate colour dye that is specific to each type of fibre in to one dye bath.
• For eg: a fabric composed of rayon and acetate can be dyed with a solid colour green by using a direct dye for the rayon, and a disperse dye of the same colour for the acetate.
2.Resist/Reserve dyeing:
• In resist dyeing at least one (but not all) of the components of the blend remains essentially undyed i.e almost white.
3.Cross dyeing:
• Cross dyeing produces fibres of contrasting color
• This is two types-
a)Shadow effect/Tone-in-Tone dyeing:
Two fibres are dyed in same hue & brightness but the depth is different. It is called tone-in-tone or shadow effect.
b)Contrast effect:
Two fibres are dyed with strong difference in hue, brightness & depth.This is called contrast effect. Pleasing final appearance is important here.
this slide in mercerization is prepared in chemical processing in textile and it could help a lot of students or lecturers who might be looking for web handout, presentation or seminar. it is openly accessible for all.
Printing means localized application of dyes on the fabric according to design. For printing it is required to produce printing paste. Printing Paste is a viscous paste which is made from pigments, thickeners and many of chemical. A good printing paste is mainly responsible for good printing effect. So it is very important to make a printing paste. There are different types of ingredients are used to make printing paste
Generally following ingredients are used in printing paste:
Dyestuffs or pigment.
Wetting agents.
Thickener.
Solvents dispersing agents.
Defoaming agents.
Oxidizing and reducing agents.
Catalyst and oxygen carrier.
Acid and alkali.
Career and swelling agent.
Miscellaneous agent
Flocking is defined as the application of fine particles to adhesive coated surfaces. Nowadays, this is usually done by the application of a high-voltage electric field. In a flocking machine the "flock" is given a negative charge whilst the substrate is earthed. Flock material flies vertically onto the substrate attaching to previously applied glue.
A wrinkle, also known as a rhytide, is a fold, ridge or crease in the cloth or garments. Wrinkle is a particular type of pressure in the finished fabric. It is produced during finishing operations by the thickness of the seam used to join pieces for processing.Resin & its use in Denim garments industry to create unique & vintage looks which add value to denim garments & improves it sale ability in market. In 80’s we have seen Resin being used to give non press , iron free trousers & now we are using in Denims to make wrinkles & creases to look natural vintage which stays after multiple home laundries.
Textile manufacturing and fabric processing (fiber to fabric)damayantimeher
This presentation deals with basic of fiber to fabric manufacturing process i.e spinning weaving , dyeing and printing.Spinning portion cover both natural fiber spinning, details of weaving and wet chemical processing portion cover dyeing printing and finishing of fibre yarn and fabric
Wrinkle resistance varies from quite low in many fabrics to very high in resilient fabrics. In order to form a wrinkle, a fabric’s wrinkle resistance must be overcome. The fabric may, however, produce strains and store potential energy that can become evident as wrinkle recovery under suitable conditions.Resin & its use in Denim garments industry to create unique & vintage looks which add value to denim garments & improves it sale ability in market. In 80’s we have seen Resin being used to give non press , iron free trousers & now we are using in Denims to make wrinkles & creases to look natural vintage which stays after multiple home laundries.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
3. FFiinniisshhiinngg
Textile finishing is a term commonly applied to different process that the
textile material under go after pretreatment, dyeing or printing for final
embellishment to enhance there attractiveness and sale appeal as well as
for comfort and usefulness.
Objects of finishing:
The aim of finishing is to render textile goods fit for their purpose or
end use. Besides that, finishing can be done for achieving the following
purposes-a)
To improve fabric attractiveness.
-By modification of fabric appearance (Calendaring, Optical
brightening)
-By altering fabric handle (Softening, Stiffening)
-Control of fabric dimension (Sanforising, Compacting)
b) To improve service ability.
-Protection of fabric (Flame proofing, Water proofing)
-Improved performance (Water repellency, Raising)
-Easy care properties (Resin finish, Crease recovery)
Introduction
4. Textile Finishes are classified in several ways:
Aesthetic
Finishes
Functional
Finishes
According to Function
Classification of Textile Finishing
5. Temporar Permanent
Semi
Permanent
y
According to the quality
Classification of Textile Finishing
6. According to type of machinery
Chemical
Finishes
Mechanical
Finishes
Classification of Textile Finishing
7. Calendaring
Calendaring is defined as the modification of the surface of a fabric by
the action of heat and pressure. The finish is obtained by passing the
fabric between heated rotating rollers (Smooth or Engraved) when both
speed of rotation and pressure applied are variable.
Objects of Calendaring
To improve the fabric handle
and to impart a smooth silky
touch to the fabric.
To compress the fabric and
reduce its thickness.
To reduce the air permeability
by closing the threads.
To increase the luster.
To reduce the yarn slippage.
Surface patterning by
embossing.
Mechanical Finishing
8. Brushing
The process which is used to remove loose threads and short fibre
ends from smooth-surfaced fabrics and is also used to raise a nap on
knits and woven fabrics is called Brushing. Brushing is frequently
applied to fabrics after shearing, removing the cut fibres that have
fallen into the nap.
Mechanical Finishing
9. Singeing
Singeing is a process applied to both yarns and fabrics to produce
an even surface by burning off projecting fibres, yarn ends, and fuzz.
This is accomplished by passing the fibre or yarn over a gas flame
or heated copper plates at a speed sufficient to burn away the
protruding material without scorching or burning the yarn or fabric.
Mechanical Finishing
10. Tentering,
These are final processes applied to set the warp and weft of woven
fabrics at right angles to each other, and to stretch and set the fabric to
its final dimensions. Tentering stretches width under tension by the use
of a tenter frame, consisting of chains fitted with pins or clips to hold the
selvages of the fabric, and travelling on tracks.
Mechanical Finishing
11. Raising
1. Napping
Using wire-covered rolls to "dig out" individual fiber ends
to the surface
2. Sueding
Using abrasive-covered rolls (sandpaper, emery cloth, etc.)
to produce shorter pile surface - does cause an apparent shade change.
Special type of raised surface fabric is corduroy
Sueding, sanding- creates softer hand of fabric.
Mechanical Finishing
Heat Setting
Heat Setting: Heat setting of synthetic fabrics eliminates the internal tensions
within the fiber generated during manufacture and the new state can be fixed
by rapid cooling.
This heat setting fixes the fabrics in the relaxed state and thus avoids
subsequent shrinkage or creasing of fabric. Presetting of goods make it possible
to use higher temperature for setting without considering the sublimation
properties of dyes and also has a favorable effect on dyeing behavior and
running properties of goods.
12. SOFT FINISH:
Softening is the complex phenomenon and is composite of surface
smoothness and internal lubrication of the fiber elements of the treated fabric.
There are many softening agent used in industries such as:
Wetting agent
Acetic acid (for neutralization)
Non-ionic polyethylene softener
Slightly cationic softener
Silicon softener
Chemical Finishing
13. HARD FINISH:
In case of hard finish, it is desirable to make the fabric
stiffer and give them more ‘body’ by filling certain
chemicals:
Wetting agent
Acetic acid (for neutralization)
Non-ionic polyethylene softener
Slightly cationic softener
Silicon softener
Hardeners RESIN FINISH:
The resin finish is also know as crease recovery treatments
the objective of resin finish to remove the wrinkles or crease
from the fabric by certain chemicals.
Wetting agent
Acetic acid (for neutralization)
Non-ionic polyethylene softener
Slightly cationic softener
Silicon softener
Resin
Catalyst ( mgcl2) Chemical Finishing
14. Mercerization
Mercerization is a treatment for cotton fabric and thread that gives
fabric a lustrous appearance. The process is applied to materials like
cotton or hemp. Mercerization alters the chemical structure of the
cotton fibre. The structure of the fibre changes from alpha-cellulose
to beta-cellulose. Mercerizing results in the swelling of the cell wall of
the cotton fibre. This causes increases in the surface area and
reflectance, and gives the fiber a softer feel.
Chemical Finishing
15. Fire Resistant finishes:
Polyester fabrics can be made flame resistant by treatment with an
aqueous emulsion of xylene soluble 2,3-dibromopropyl phosphate in a pad-cure
sequence. A semi-permanent effect can be produced by treating with a
mixture of ammonium bromide and brominated phosphoric acid esters.
Anti-microbial finishes:
With the increasing use synthetic fibbers for carpets and other materials in
public places, anti-microbial finishes have assumed importance. Anti
microbial finish Eco-friendly anti microbial finishing agent for cotton fabrics
& Garments. Useful for eliminating bacterial growth due to sweat.
Enzymatic finishes
Bio-polishing: This is a process to remove the protruding fibers of a fabric
through the action an enzyme. This enzyme selectively acts on the
protruding fibers and cease to work after finishing the work by a simple
raise in temperature of the treatment bath.
Chemical Finishing
16. Closing
I would like to express many thanks to my advisor, Professor Dr. Zulhash
Uddin for giving me the opportunity to study in the Textile Finishing.
This is the end of our presentation. I hope
all of you enjoyed it. Lastly thanks to all
for your kind attention……!