Hi All,
Pls find PPT on reactive and discharge print which shows the difference to understand both print styles.
Hope this would help you !
Best,
Sukhvir
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.
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.
Lab dip is a process by which buyers supplied swatch is matched with the varying dyes percentage in the laboratory with or without help of “DATA COLOR”
Lab dip plays an important role in shade matching & and detaching the characteristics of the dyes and chemicals are to be used in the large scale of production. So this is an important task before bulk production.
Lab dip is a process by which buyers supplied swatch is matched with the varying dyes percentage in the laboratory with or without help of “DATA COLOR”
Lab dip plays an important role in shade matching & and detaching the characteristics of the dyes and chemicals are to be used in the large scale of production. So this is an important task before bulk production.
Puff print is a common print in Fashion Industry. Some time we can call it Emboss Print or foam print . It is almost similar to the rubber print we can make this print in any color. Mainly buyer asked this print on Knitted T-Shirt.
Sublimation vs Digital Printing By Sukhvir SabharwalSukhvir Sabharwal
Dear All,
Pls see actual process of sublimation and digital with their advantage & disadvantage along with comparison.
Hope this would help you !
Courtesy- Mr. PK Aggarwal
Best,
Sukhvir
Now we are in the age of printing, textile printing becomes popular day by day. Screen printing has been taken large place in textile printing sector. Trying to give a short description on it.
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Foil printing is to print some pattern with the foil on the fabric for shiny effect. There are two kind of foil printing method. This printing method is based on the use of metallic foil paper of aluminum or copper one. Foil is applied by adhesive. The print fixation method is similar to transfer printing.
In both print Rubbers is used as the printing paste. Crack printing is near similar as rubber printing process but additional crack paste is used before applying rubber printing paste by the screen printer on the fabric. In crack print when pull the print, it seem like crack, but rubber print only rubber and fixer are commonly used no use crack inks to produce crack effect. So when pull the rubber print, it seem like solid, smooth, plain and no crack effect.
This presentation is brought to you by FESPA thanks to Ad Versteeg of Evident. It is for viewing only. If you would like to purchase a copy in English, please contact chris.smith@fespa.com.
This presentation provides a introduction to digital textile printing for basic understanding about the subject.
For more info contact aditya@inkjetforumindia.com
www.inkjetforumindia.com
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.
The term finishing, in a broad sense it covers all the processes of making the fabric good looking, good hand feeling, luster and of course for buyer requirement. It is done after dying and before delivery to market. Various types of parameters are controlled during finishing section considering buyer requirement. The term also includes bleaching, dyeing, mercerizing etc. But normally the term is restricted to the final stage in the sequence of treatment of Knit fabrics after bleaching and dyeing. However, fabrics which are neither bleached nor dyed are also finished.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
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UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
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UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
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GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
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The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
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Length: 30 minutes
Session Overview
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The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
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Sectoral targets and attacks as well as the cost of ransom
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Major cyber events in 2024
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UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
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1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
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Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
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2. DISCHARGE PRINT TECHNIQUE
FLOW CHART
DYEING OF FABRIC
• RFD Fabric is dyed in the darkest base color
• PRINTING BY USING DISCHARGING AGENT
PRINTING BY USING
DISCHARGING AGENT
• Fabric is printed on rotary machine by using discharging agent(Rangolite). This chemical is mixed with color dyes
• Discharging agent discharges the dyed base color & then color dyes fill up the discharged areas
STEAMING
• This process is used to fix-up the printed color. Controlled steaming procedure will results in better fastness of color.
WASHING
• This process is used to drain out residual color from the surface of printed fabric. On an average approx 30% of
printed color depth is being washed out at this stage.
STENTER &
SANFORIZING
• After washing fabric is being passed through stenter maching to apply softner & control the final width
• Sanforising is used to control the final shrinkage of fabric by passing the fabric through heated rubber rollers/blanket.
sukhvir.sabharwal.tit07@gmail.com
3. REACTIVE PRINT TECHNIQUE
FLOW CHART
RFD PROCESS
• Fabric is processed till RFD stage . RFD process includes desizing / singeing / mercerization.
PRINTING BY USING
REACTIVE COLORS
• Fabric is printed on rotary machine by using REACTIVE COLORS. These color particles have a tendency to penetrate
well in to fibre structure
STEAMING
• This process is used to fix-up the printed color. Controlled steaming procedure will results in better fastness of color.
WASHING
• This process is used to drain out residual color from the surface of printed fabric. On an average approx 35-40% of
printed color depth is being washed out at this stage.
STENTER &
SANFORIZING
• After washing fabric is being passed through stenter machine to apply softener & control the final width
• Sanforising is used to control the final shrinkage of fabric by passing the fabric through heated rubber rollers/blanket.
sukhvir.sabharwal.tit07@gmail.com
5. SINGEING & DESIZING
• Singeing is done to burn the protruding fibres from the surface of fabric.
• Singeing improves appearance as well as pilling resistance.
• Desizing is used to remove the starch from fabric surface.
• Desizing process improved the absorption of fabric.
sukhvir.sabharwal.tit07@gmail.com
12. CONTINIOUS BLEACHING RANGE( SCOURING
/ MERCERISING/BLEACHING)
• Scouring is done to remove impurities like dust / kitty / husk from the
fabric. This process is done by running the fabric through boiled water.
• Mercerizing is done to improve absorption of fabric. This is done by
passing the fabric through NaOH( Sodium Hydroxide) at different
concentration depending on the end shade required.
• Bleaching is done to improve whiteness in the fabric. There are mainly
2methods of bleaching –
– Half Bleaching – done by HOCL (Hypo Chloride) solution
– Full Bleaching – done by H2O2 ( Per Oxide) Solution
sukhvir.sabharwal.tit07@gmail.com
17. ROTARY PRINTING M/C
• One rotary print roll is used to print one color.
• Rotary m/c are available to print 10colors at once.
• Darkest color is printed first & lightest color at last.
• Printing roll pressure is controlled by hydraulic pressure head.
• Printing color are pumped in to the rotary rolls through pipes.
• The color is then spread over on the fabric through blade placed inside the
roll.
• The fabric is then forwarded to the heated segment maintained @ 85-
90degree where the color are dried up.
• The fabric is then collected at trolley placed at the end of rotary m/c
sukhvir.sabharwal.tit07@gmail.com
21. STEAMING M/C
• This m/c is used for fixation of printing colors by passing the fabric through
high temp.
• The temp. maintained is approx 100-150degrees for cotton fabrics & 150-
200degree for polyester.
• Speed of m/c & heat exposure time is decided on the basis of print color
coverage. For Ex. -- For blotch prints with maximum coverage, m/c is kept
as slow speed so that the fabric can get more time for heat exposure.
sukhvir.sabharwal.tit07@gmail.com
22. CLOSED STENTER
• This m/c is the heart of any dyeing/printing mill.
• Final width of fabric is adjusted by this m/c.
• Softener is being applied by his m/c.
• This m/c consists of 2parts
– Dyeing tub with mangle
– Heated chambers ( 8-12)
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26. CONTINIOUS WASHER
• This m/c is used for Discharge & Procian prints.
• The fabric is washed to extract the residual color from the surface of
fabric.
• This m/c consists of several bath tubs containing cold & hot water.
• Water is changed after every 1000mtrs to minimize the tinting of dark
colors on to the light colors.
sukhvir.sabharwal.tit07@gmail.com
29. SANFORIZING M/C
• This m/c adjust the shrinkage in warp as well as weft direction. That’s why
it is also called zero zero m/c means zero shrinkage in both the directions.
• The wet fabric passed b/w steam heated rubbers.
• This m/c has the same effect as that of steam iron.
sukhvir.sabharwal.tit07@gmail.com
32. VARIABLE FACTORS IN DISCHARGE &
REACTIVE PRINT TECHNIQUE
1.) Mercerization --- This process is used to improve the absorbency & dischargability of fabric.
Any slight variation in caustic application will result in bulk lot variation.
2.) Steaming – This process is used for fixation of color. Steam is being applied in a closed
chamber. To have even results the effect of steam should be even at all points but it is really
impossible to maintain the same level of steam at all areas hence we get more bulk variation.
3.) AIRING – The fabric after printing is left for airing to have better development of colors. The
surrounding environment does have an impact of final color fixation & hence the final color shade
changes. Hence it is recommended not to perform a discharge/reactive print in high humidity or
rainy season .
4.) Washing -- This process is used to drain out extra color from the fabric surface. As a
rule, 1000ltrs of fabric is being used for 2000mtrs fabric & then fresh water is being used. Since
the superficial color gets mixed in the water, hence migration of darker colors on lighter colors
happens at this stage. In case of black & white print, this process becomes more crucial since
black color migrates on to white color. Moreover, since a 2000mtrs bulk lots is washed at
once, the maximum size of bulk lot is 2000mtrs only.
sukhvir.sabharwal.tit07@gmail.com
33. WHY DISCHARGE PRINT IS TERMED AS
BLIND PRINTING
• The appearance of fabric during subsequent process of
printing / steaming & washing changes drastically. This is
being shown in subsequent slides
• We can see the final appearance after washing/finishing only
• Hence we can’t determine exactly the final product outcome
due to several variable factors as advised in earlier slide.
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