Transfer printing is the term used to describe textile and related printing processes in which the design is first printed on to a flexible non-textile substrate and later transferred by a separate process to a textile.
Pretreatment ,Impurities in natural fibre; Chemistry and practice of preparatory processes for cotton, wool and silk; Mercerization of cotton; Preparatory processes for manmade fibres and their blends,Carbonization ,Scouring barium acitivity number .
Pretreatment ,Impurities in natural fibre; Chemistry and practice of preparatory processes for cotton, wool and silk; Mercerization of cotton; Preparatory processes for manmade fibres and their blends,Carbonization ,Scouring barium acitivity number .
This procedure is sometimes referred to as “Burn Out”. A cotton / polyester blended fabric can be printed with a print paste containing the burn out chemicals, and after fixation, the cotton portion is destroyed and only the polyester remains. Burn-out textiles is a technique used to develop raised designs on fabric surface. This is primarily being done in fabrics with at least 2 different fibre content i.e. Cotton-Polyester, Silk-Rayon etc.
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.
Special Instruction:
Fabric shrinkage must keep within ±5%
Color fastness should be 4-5 range
Pilling range 3 to 5
pH range 5.5 to 7
Fabric weight will be allowed ±02%
Fabric quality should be s per approved swatches & Lab-Dips.
Batch to batch color matching should be 4-5
Batch to batch “Shade Band Swatch” must be submitted for approval.
Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness. Dyeing is normally done in a special solution containing dyes and particular chemical material. … In dyeing, it is applied to the entire textile.
This procedure is sometimes referred to as “Burn Out”. A cotton / polyester blended fabric can be printed with a print paste containing the burn out chemicals, and after fixation, the cotton portion is destroyed and only the polyester remains. Burn-out textiles is a technique used to develop raised designs on fabric surface. This is primarily being done in fabrics with at least 2 different fibre content i.e. Cotton-Polyester, Silk-Rayon etc.
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.
Special Instruction:
Fabric shrinkage must keep within ±5%
Color fastness should be 4-5 range
Pilling range 3 to 5
pH range 5.5 to 7
Fabric weight will be allowed ±02%
Fabric quality should be s per approved swatches & Lab-Dips.
Batch to batch color matching should be 4-5
Batch to batch “Shade Band Swatch” must be submitted for approval.
Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness. Dyeing is normally done in a special solution containing dyes and particular chemical material. … In dyeing, it is applied to the entire textile.
Sublimation method depends on the use of a volatile dye in the printed design. When the paper is heated the dye is preferentially adsorbed from the vapour phase by the textile material with which the heated paper is held in contact. This is commercially the most important of the transfer-printing methods. Dye sublimation allows photo lab quality picture printing. During the dye sublimation printing process, an image is digitally printed in reverse with dye sublimation toners or inks on to media.
Textile printing is the most versatile and important of the methods used for introducing color and design to textile fabrics. We may print as a fabric form or apparel form
Digital printing on fabrics is a versatile technology that contains immense growth and involves ample options for different fabric uses. Know more about it with all details.
Overview of Piece Printing Process in Textile Industryiosrjce
Printing is a renowned process in textile industry which is generally done after dyeing. It is the last
process to enhance aesthetic appeal of the fabric. Most of the buyer provide order of garments including
printing process as various design can be imparted on the face side of garments indicating particular style and
taste of the customer. Piece print has been able to draw the attention of customer by its variation of design.
There are so many methods have been invented to apply the print paste onto the piece of garments.But the
article related to piece print is not as much as available like all over print. This article deals with difference
between all over print and piece print and various piece printing process on textile materials that frequently
used
Wet spinning is the oldest of the five processes. This process is used for polymers that need to be dissolved in a solvent to be spun. The spinneret is submerged in a chemical bath that causes the fiber to precipitate, and then solidify, as it emerges. The process gets its name from this "wet" bath.
Natural dye(Madder,Cochineal,Lac and Fustic dye)BerihunGashu
It is easy to extract the natural color from plants, fruits, or flowers. Many natural dyes also have antimicrobial properties, making them safer for kids in particular. Additionally, natural dyes neither contain harmful chemicals nor carcinogenic components, common to artificial or synthetic dyes
Moisture management and soil release finishBerihunGashu
Soiling is the major problem of cloth in textile during use. soil release finish for easy removal of soil. Moisture management for wicking of sweat from our body to outer garment surface.
The application of technical textile to building and construction is due to some specific properties of textile fibers like, tenacity, strength, light weight, comparatively low cost, can and resistance to chemical plus to that ability of resisting the UV light. Basically technical textiles are applicable in different areas for different purpose.
GOTS and Okeo-Tex are most widely used certified standards for quality product and processing of production to finished products of textiles.
The principle is production of textile products with in green environment and use of natural raw material as input and reduce environmental pollution.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
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.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
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.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
Fundamentals of Electric Drives and its applications.pptx
Style of transfer printing
1. 1
BAHIR DAR UNIVERSITY
Ethiopian Institute of Textile and Fashion Technology
“Advanced coloration”
Sminar: Recent Developments in transfer printing
Prepared By:-Berihun Gashu (MSc in TC)
May , 2021 G.C.
Submitted to:- Dr. K Murugesh Babu
3. Introduction
o The printing is described as localized dyeing, dyes or pigment are applied
locally or discontinuously to produce the various designs.
o Printing is the production of all active designs with well defined boundaries
made by the artistic arrangement of a motif is one or more colors.
o Printing is a process for reproducing text and image, typically with ink on
paper using a printing press.
4. What is Transfer Printing?
o It is the term used to describe textile and related printing
processes in which the design is first printed on to a flexible non-
textile substrate and later transferred by a separate process to a
textile.
5. Why Transfer Printing?
o Designs may be printed and stored on a relatively cheap and
nonbulky substrate.
o The production of short-run repeat orders.
o Many complex designs can be produced more easily and accurately
on paper than on textiles.
o Enable textile printing to be carried out using simple, relatively
inexpensive equipment with modest space requirements, without
effluent production or any need for washing-off.
6. Advanced styles of transfer textile printing
o Transfer Printing
Sublimation Transfer
Melt Transfer
Film Release Transfer
Wet Transfer
7. 1. Sublimation/Vapor-Phase (dry transfer printing)
o During the sublimation printing process, an image is digitally
printed in reverse with sublimation toners or inks onto media.
o That image is then placed on top of a fabric and subjected to high
heat and pressure to form a heat press.
o The sublimation toners or inks sublimate – the inks go from a solid
state to a gaseous state without becoming liquid in between and
flow into the fabric, dyeing the threads.
8.
9. Equipment needed for Sublimation Transfer Printing
o A dye sublimation printer
o Sublimation paper
o Photo processing software
o A heat transfer press
o A digital camera or scanner to transfer design
10. Yarn type used for sublimate transfer printing
o It is high-recommended that 100% Polyester garments are used for
sublimation printing.
o 100% polyester is best for a vibrant design resulting in a no-loss
image resolution.
o Polyester blend fabrics; such as our 65% Polyester / 35% Cotton
Blend; can also be used but will result in a retro/vintage look.
11. 1. Dye sublimation is done using a digital image, a dye sublimation
printer and dye.
2. The image is transferred to dye sublimation paper and the ink is
transferred to the fabric.
3. The image retain the digital quality is permanently embedded into
the fabric.
How it is done?
14. 2. Melt/Heat Transfer printing
o The design is printed on paper using a waxy ink, and a hot iron
applied to its reverse face presses the paper against the fabric.
o The ink melts on to the fabric in contact with it.
o This was the basis of the first commercially successful transfer
process, known as Star printing, developed in Italy in the late 1940s.
o It is used in the so-called ‘hot-split’ transfer papers extensively
used today in garment decoration.
15. Melt Transfer printing process
1. The ink layer of the transfer is based on dyes and waxes.
2. The ink layer is embedded in the fabric by melt and pressure, and
part of the ink is transferred to the fibers and then post-treated
according to the properties of the dye.
3. When it employed, a large pressure is required and the transfer rat
of the dye increases as the pressure is increases.
16. Yarn type used for melt Transfer printing
o Melt transfer printing process could be used to print a range of
natural and synthetic fabrics with appropriate selection of dyes and
chemical auxiliaries.
17. 3. Film Release Transfer printing
o It is similar to melt transfer with the difference that the design is
held in an ink layer which is transferred completely to the textile
from a release paper using heat and pressure.
o As the name implies, film release deposits the printed image as a
virtually coherent film on the textile material.
18. Film Release Printing Working Process
1. Adhesion forces are developed between the film and the textile
which are stronger than those between the film and the paper.
2. The process has been developed for the printing of both
continuous web and garment panel units, but is used almost
exclusively for the latter purpose.
3. In commercial importance it is comparable with sublimation
transfer printing.
21. What is Wet Transfer Printing?
o The principle behind wet transfer processes is the use of water as
the medium through which dye diffuses in passing from the paper to
the fabric.
o Water-soluble dyes are incorporated into a printing ink which is used
to produce a design on paper.
o The design is transferred to a moistened textile using carefully
regulated contact pressure.
o The dye transfers by diffusion through the aqueous medium.
22. Wet Transfer printing process
1. Printing the required design on a selected grade of paper, using
specially chosen dyes dispersed in a suitable paper printing medium.
2. Impregnating the fabric with an aqueous solution which may contain
a dye fixation catalyst and a thickener.
3. Bringing the printed paper and the impregnated fabric into close
conformity, by applying pressure, and maintaining this conformity
under pressure for a period time.
23. Yarn type used for wet Transfer printing
o Wet transfer processes were developed for printing wool with acid
or reactive dyes.
o Mostly used for fully fashioned knitted woollen garment panels.
o For cotton goods and may be effectively used for wool blends, nylon
and acrylic fabrics.
24. Advantages of Transfer Printing
o It gives good prints on well prepared knitted goods.
o No adverse effect on fabric’s feel and luster.
o It allows excellent dye penetration into the fiber ( because transfer
takes place at very high temperature).
o Steaming, Washing, drying etc are not necessary.
o Quicker reaction to changes in fashions.
25. Disadvantages of Transfer Printing
o There is some restriction of the production of deep shade
o High temp and pressure is required
o Once printed cannot be corrected
o Only limited dyestuff can be used for transfer printing
o Lower production speed due to existing transfer calendars
o Storage of large quantities of paper over prolonged period of time is
a risk.
26. o In textile application the transfer printing is one of the advanced
methods since the printing process is performed without steaming,
washing, drying, its quicker reaction to changes in fashions and fast
delivery time of response for customer's.
conclusion
27. 1. Leslie, W.C., 2003. Textile printing. Society of Dyers and Colourists.
2. Moltchanova, J., 2011. Digital textile printing.
3. El-Kashouti, M., Elhadad, S. and Abdel-Zaher, K., 2019. Printing technology on textile fibers.
Journal of Textiles, Coloration and Polymer Science, 16(2), pp.129-138.
4. https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.ebay.com%2Fitm%2F263
281477361&psig=AOvVaw1gPPX7Kz4rrYOua8pZJtE3&ust=1620979307537000&source=ima
ges&cd=vfe&ved=2ahUKEwj5juTPmMbwAhUFweAKHRS3BLYQjhx6BAgAEA4
5. https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%
3Fv%3DSbHZGAtRTNA&psig=AOvVaw3ifGebYFvOC2GFSBP4NHAb&ust=1620979327133000&
source=images&cd=vfe&ved=2ahUKEwjckpDZmMbwAhXH1-AKHcKfAlwQjhx6BAgAEA4
6. https://textilelearner.net/steps-of-wet-transfer-printing-process/
7. http://drysublimation.blogspot.com/2017/08/dye-sublimation-printing-technology-
and.html
8. https://en.wikipedia.org/wiki/File:Thermal_Transfer_Printing.png
9. https://www.intechopen.com/books/hybrid-nanomaterials-flexible-electronics-
materials/smart-manufacturing-technologies-for-printed-electronics
References