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Welcome to the February 2005 edition of the IPC e-newsletter. The IPC e newsletter is distributed free to more than 2500 people around the world.

This edition of the newsletter contains:

News features.

The Powder Coating Manual (Part 37)

Exhibitions and Conferences in February and March 2005

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Off topic

Your eyes can deceive you. Don't  trust them.

Most of the our subscribers are in the field of coatings and often come across various shades of colors. Some are dark, while others are light and we easily identify them with fairly accurate results.

Do we? Think once again and look at the adjacent picture. There is something special about the squares marked "A" and "B". Think while you read the newsletter.

Or scroll down to the end of the newsletter to see the solution. .







For more Mitsuba products information please visit


Contact Us:
34/H, Laxmi Industrial Estate,
New Link Road, Andheri (W),
Mumbai– 400 053. INDIA
Tel:  0091-22-2631 8633/2633 4735/56924151/52/53/54     
Fax:  0091-22-56924154.
Email:   mitsuba@vsnl.com


Nerolac contributes to the PM Relief Fund for Tsunami Affected
Press Trust

Goodlass Nerolac Paints Limited, the country’s second largest paint company, is contributing Rs. 10 Lakh to the Prime Minister’s Relief fund for all those affected by the Tsunami that hit the Eastern Coast and the Bay of Bengal on December 26th 2004.

"Everyone here at Nerolac is deeply concerned about all those whose lives have been devastated by Sunday's Earthquake and Tsunami disaster. We are looking at every possible way in which we can assist. Contributing to the PM’s fund is the surest way to reach out to all those affected by the worst natural disaster that hit the country. We cannot even begin to fathom the devastation that has been caused and the loss that people have incurred. Even as we know that the loss is far too big for anyone to recover, but we at least want to make whatever little difference we can,” said Mr. Bharuka, MD, Goodlass Nerolac Paints Limited.

Nerolac has always been an active believer of social development and people’s welfare.

Goodlass Nerolac Paints has been at the forefront of paint manufacturing for 84 years pioneering a wide spectrum of quality paints. Goodlass Nerolac is the second largest paint company in India and undisputed leader in Industrial segment, having a group turnover of more than 1000 crores. The company has five strategically located manufacturing units all over India and a strong dealer network of over 11000 dealers across the country. The company manufactures a diversified range of products ranging from architectural coatings for homes, offices, hospitals, and hotels to sophisticated automotive coatings and industrial coatings for most of the industries.

Marpol's Tsunami Contribution
Sandra D'sa
informed IPC in her email that Marpol has contributed Rs 100,000 for the Tsunami victims.

DuPont Tsunami Relief Efforts Continue
January 26, 2005 —
DuPont employees and businesses continue to take action to meet human needs in the areas most directly affected by the Indian Ocean earthquake and tsunamis. In the last two weeks, DuPont employees in the Asia Pacific region have personally contributed almost USD 120,000 to tsunami relief, channeled to devastated areas through agencies such as Care Australia, the Red Cross of China and Japan, and World Vision in Taiwan.

DuPont products also continue you to be donated to affected areas in Indonesia and Thailand, including: Solae® energy bars, DuPont™ Tyvek® coveralls, and DuPont™ Sontara® masks, coats and gowns. A special delivery of DuPont™ Virkon® disinfectant was delivered to the Red Cross branch in Banda Aceh, Medan, by a team led by DuPont Indonesia Logistics Manager Erhan Erhansyah. Erhan was joined by local Virkon® distributor Mr. Wigan, who trained volunteers on how to use the product safely.

The Asia Pacific team is focused on ongoing relief efforts targeted to reconstruction and rehabilitation. "We are looking into the possibility of water treatment solutions, nylon fishnets, and farmland rehabilitation technology, as well as appropriate support to technical institutes' efforts on reconstruction of affected areas," said Hutch Ranck, leader of the Asia Pacific team managing the relief efforts.

Rohm and Hass employees safe
Rohm and Haas is reporting that all employees in the Asia-Pacific region are safe and that no operations have been directly affected by this disaster. The company has 22 manufacturing sites and 13 technical service and research operations in 10 countries in the Asia-Pacific region.

Dow pledges $5 million to tsunami relief effort
The Dow Chemical Company has announced that it will contribute $5 million to the relief efforts for the victims of the earthquake and subsequent tsunamis in Southeast Asia and the Indian sub-continent. “As we’ve all seen, the reports and images from the tsunami-stricken regions in the Indian sub-continent and Southeast Asia are at once incomprehensible and heart-breaking,” said Dow CEO Andrew Liveris. “At times like these, we all struggle to come up with meaningful ways to contribute and help those who have lost so much.” Dow’s pledge of $5 million in aid to those affected by the disaster includes a $1 million cash contribution to the American Red Cross International Response Fund, which is dedicated to providing immediate, vital help to the victims in need. Dow will provide up to $1 million to match individual contributions from Dow employees and retirees around the world. Additionally, Dow will donate $3 million in the form of products, technology and funds to assist in the longer-term reconstruction efforts. “Through these efforts, we hope to be able to provide tangible and meaningful aid to the survivors in both the immediate days ahead and into the future as they begin to rebuild their homes, their communities and their lives,” said Liveris.

Asian Paints' plant near Chennai commences production
Chennai, Jan 20 : Asian Paints India Ltd's new plant near Chennai commenced its operations today, the company said.

The plant located at the SIPCOT Indsutrial Estate, Sriperumbudur, about 30 km from Chennai, commenced production today after formal inauguration, the company informed the stock exchanges today. Inianinated

The 513 million USD Asian Paints has set up this plant to manufacture emulsion paints. The plant will have an initial capacity of 30,000 kl per annum which will be raised in phases to 1,00,000 kl per annum, it said. PTI <more>

An Indian Powder Coating Manufacturers Association takes shape in north India.
In a meeting held on 29th January, some of the powder manufacturers in the north India have decided to come together and form a common platform to discuss the problem of growing prices and delayed payments. Mr. Kuldeep Verma of Sharp Coatings Pvt. Ltd, who initiated the formation of the association informed us that the next meeting will be held on February 19th.

With the absence of any major manufacturer attending the meeting, it has to be seen, how this association would bind together in future and what influence would it have on the overall powder market.

Dow Increases Epoxy Prices in Europe, Middle East, Africa and India/Pakistan
Effective 1 January 2005, or as contract terms allow, Dow Epoxy Products and Intermediates (EP&I) will increase prices for its epoxy resins in Europe, Middle East, Africa and India/Pakistan. In Europe (Western Europe, Eastern Europe and Turkey), Dow will increase prices by 200 Euro/MT for its liquid, solid, solid solution and standard brominated epoxy resins. In the Middle East, Africa, India/Pakistan, Dow will increase prices by 250 US$/MT for its liquid, solid and solid solution epoxy resins. The increase for specialty resins varies by product. This increase is in addition to the previous increases, effective 1 November, of 230 Euro/MT and effective 1 December, of 150 Euro/MT for liquid, solid, solid solution and standard brominated epoxy resins.

Lein Corp. building leveled
Lein Corp. owner David Compton was just about to head in the shower Thursday morning when his phone rang. It was his secretary, telling him to get into work, quickly. A fire had started, a bad one. Compton never got his shower. Instead, he threw on clothes and drove to his powder coating factory at 33rd and Hamaker streets, which celebrated its 15th anniversary Dec. 15. When he drove up, he saw his worst fears: flames and smoke pouring from the No. 1 building of his three-building operation. <more>
Henkel completes acquisition of Sovereign Specialty Chemicals
The acquisition of the U.S. adhesives company Sovereign Specialty Chemicals, Inc. by Henkel Corporation, a U.S. affiliate of Henkel KGaA, was successfully completed on December 27, 2004. The transaction value of the acquisition is approximately 575 million USD. The acquisition of Sovereign Specialty Chemicals provides Henkel in North America with a substantial and growing business in the craftsmen and DIY adhesives and sealants market and complements the industrial segment. With the completion of all acquisitions made in 2004, the Henkel Group will generate about 25 percent of its sales in the USA.
Sovereign Specialty Chemicals employs about 900 people worldwide and realized sales of 391 million USD in the period July 1, 2003 through June 30, 2004. The product range encompasses technologically sophisticated adhesives, sealants and coating materials for various industrial applications as well as for the craftsmen and DIY market segment.

Rohm And Haas Powder Coatings Announces Exclusive Distributor Alliance With Tikkurila For Northern And Eastern Europe
PHILADELPHIA - Rohm and Haas Powder Coatings and Tikkurila, the Finland-based company responsible for Kemira’s paints and coatings business, have announced that, starting January 31st 2005, Tikkurila will act as the exclusive distributor for Rohm and Haas Powder Coatings in Finland, Sweden, Norway, Estonia, Latvia, Lithuania and the Commonwealth of Independent States including Russia.

Tikkurila will be the exclusive contact for all the Rohm and Haas Powder Coating product lines covered by this alliance, providing assistance to customers from order fulfilment to delivery; a dedicated team of sales representatives will assist customers in product selection from the wide range of high quality products, provide technical and sales support, address technical issues and identify potential cost savings for the customer.

“We are excited about this opportunity of working with a global leader and being able to offer a complete range of high-quality coatings that now includes powder coatings," said Ulf Koivula, President for Tikkurila Coatings. “This new alliance with Rohm and Haas Powder Coatings offers us more technical strength, and the ability to connect quickly with customers while expanding our ability to proactively manage a large customer base, regardless of geography.”

Robert Linsdell, General Manager, Rohm and Haas Powder Coatings Europe, added, “This alliance with Tikkurila enables us to accelerate our speed to market by utilizing Tikkurila’s established networks throughout these regions. We are pleased to be able to work with a company that reflects our own strong work ideals and ethics – within the industry Tikkurila is experienced, trusted, and has a proven track record. The combination of our state of the art powder coatings technology with Tikkurila's market coverage and distribution network gives us a strong foundation to bring new innovative solutions quickly to the market place.” <more>

DuPont Titanium Technologies named best supplier in China
Coatings Flash - January 17, 2005

DuPont Titanium Technologies was recently named one of the 10 best suppliers to the coatings industry in China. More than 23,000 companies and individuals involved in the coatings industry voted online to select the best supplier. Evaluation criteria included: product innovation, influence, and industrial responsibility. DuPont Titanium Technologies is a leading supplier of titanium dioxide in China. "We will continue to provide high-quality products, stable supply, and world-class service to our customers," said Phillip Chen, China business manager - DuPont Titanium Technologies.

DSM Desotech opens manufacturing facility in Shanghai
Coatings Flash - January 31, 2005

DSM Desotech, a world leader in the development and supply of UV-curable materials, announced the opening of DSM Desotech Specialty Chemicals (Shanghai) Ltd. (DDSC). The new plant is Desotech's fourth manufacturing facility to date, now producing "Cablelite" fiber optic inks for the Asia-Pacific region. Desotech's other plant locations include: Hoek van Holland, the Netherlands; Stanley, North Carolina, USA; and Tsukuba, Japan. The Tsukuba plant is part of Japan Fine Coatings Co., Ltd-a joint venture between DSM and JSR.
Production equipment, manufacturing processes and quality control measures at DDCS have been carefully engineered to the same stringent standards as those of Desotech's other ink manufacturing facility in Stanley, NC. For this reason, China customers confirm that DDSC-produced Cablelite inks are consistent in both product quality and package appearance as those they have received from Desotech in the past.
In 1999, DSM Desotech established its first local sales office in Shanghai, followed by the opening of both a technical service center and a distribution center in 2003.

DuPont 2004: Year of improved operating performance
Coatings Flash - January 31, 2005
"The fourth quarter caps a year of improved operating performance by our company, delivering broad-based revenue growth, cost productivity and margin improvement," said Charles O. Holliday, Jr., DuPont chairman and chief executive officer. Global consolidated net sales and net income consolidated net sales for the fourth quarter were $6.0 billion compared to $6.5 billion in the fourth quarter 2003, and $27.3 billion for the full year compared to $27.0 billion in 2003. Net income for the fourth quarter was $278 million compared to $636 million in the prior year. Net income for the full year was $1,780 million, compared to $973 million for 2003. Higher selling prices and volume growth more than offset higher energy and raw material costs.
Sales growth largely can be attributed to 5 percent volume growth and 7 percent higher U.S. dollar prices, which include 4 percent higher local selling prices. Positive pricing momentum for the core segments continued throughout the fourth quarter. Segment Worldwide volume growth was 5 percent with especially strong growth in the emerging markets of China and Eastern Europe. In the United States, volumes were up 1 percent, building on the very strong 6 percent volume growth in the fourth quarter of 2003.
The Coatings & Color Technologies segment captured price improvements and volume gains, most notably in white pigments and automotive refinishes. PTOI improved by 17 percent.

Global Finishing Solutions' plant closure blamed on strength of Canadian dollar
 One of the city's largest and long-established manufacturing plants is slowly pulling up stakes and moving south.
Global Finishing Solutions (GFS) of Wood Street will be closing its doors later this year after its parent company announced its plans to open a new state-of-the-art manufacturing facility in Monterrey, Mexico. The Barrie plant will gradually transfer all manufacturing to Monterrey during 2005. The manufacturing centre for Global's industrial products will remain in Osseo, Wisconsin.
GFS is currently ranked by Huronia Business Times as the 63rd largest private-sector employer in Simcoe County with 150 staff.

Carlos Pippa, president and CEO of GFS, says the key objective of the move is to consolidate the company's leadership in the refinish spray booth market and to bolster Global Finishing Solutions' competitive edge. <more>

Sales leads from ebiz newsletter
 Our website generates a number of sales leads every week. Such sales leads can generate business for a several products. You must have observed that we are eager to share such information with all the relevant people. Unlike, other business website which restrict "supplier to customer" interaction, we promote this activity.

Subscribe to the e-biz-newsletter, which contains information about potential customers who are in need of products related to powder coating.

To get this e-biz-newsletter, the user would have to pay a small annual processing fee. Please send a DD of Rs 3000 (US$ 60) in favour of "India Powder Coating" payable at Indore at the
contact address

Some of the recent leads are now also available on an individual basis for Rs 500 or US $ 10 each. Here are some of them.

1. Powder coating plant required in Western India.
2. Powder coating plant required in Western India.
3. Powder coating plant required in Eastern India.
4. Powder coating plant up gradation to be done in a factory at Malaysia.
5. Powder coating plant required in North India
6. Plant up gradation to be done in a factory at USA




  Seminar Events Exhibitions  

32nd Annual International Waterborne, High-Solids, and Powder Coatings Symposium
February 2 - 4, 2005
Symposium; New Orleans/USA
More Information from: The University of Southern Mississippi
Department of Polymer Science
Dr. Robson F. Storey, P.O. Box 1 39406-0063 Hattiesburg, MS, USA, Fax: +1 601 266-6265
http://www.psrc.usm.edu/waterborne, waterborne@usm.edu 

Middle East Coatings Show 2005
February 15 - 16, 2005
Exhibition; Cairo/Egypt
More Information from: dmg world media Ltd. Queensway House 2 Queensway Redhill, Surrey RH1 1QS
United Kingdom Fax: +44 1737 855034 http://www.coatingsgroup.com  adrianharrow@uk.dmgworldmedia.com 

Smart Coatings 2005
February 16 - 18, 2005
Symposium; Orlando, Fla./USA
More Information from: Coatings Research Institute
430 W Forest Ave
Ypsilanti, MI 48197
Fax: +1 734 483 0085
http://www.emich.edu/public/coatings_research/smartcoatings/index.html sandy.tanner@emich.edu 

Weathering of Polymers and Coatings in the Automotive Industry
February 16 - 17, 2005
Symposium; Würzburg/Germany
More Information from:SKZ (South German Plastic Center Frankfurter Str. 15-17 97082 Würzburg Germany http://www.skz.de

Bristol OCCA Technical Meeting
 Inaugural Les Brooke Memorial Lecture "The  Psychology and Perception of Colour and Shape" by Prof Jim Guthrie  (University of Leeds), 7.00pm, 16 Feb 2005, Bath University.
For further information and directions please contact: Yvonne Waterman OCCA, Priory  House, Tel : 020 8908 1086, 967 Harrow Road, Wembley HA0 2SF, UK. e-mail : yvonne@occa.org.uk

Spray Finishing Techology Workshop
February 16-18, May 18-20, September 7-9, and November 16-18, 2005
Presented by: Binks and DeVilbiss
Sponsored by: Owens Community College
Location: Toledo, Ohio, USA
Description: This intensive workshop will familiarize participants with the equipment, systems and techniques of spray finishing. Topics include
surface preparation, equipment types, evaluation, and spray application associated with industrial finishing. The latest technologies are explored.
Each student has ample opportunity for hands-on application of coatings with several types of spray tools.
For Information: sprayworkshop@netscape.net

Paint Technology
February 21 - 24, 2005
Training Course; Teddington/UK
More Information from: Paint Research Association 8 Waldegrave Road Teddington
TW11 8LD Middlesex UK Fax: +44 20 8943-4705  http://www.pra.org.uk/training/index.htm

European Coatings Conference: Novel Biocide Technology II
February 24 - 25, 2005
Conference; Berlin/Germany
More Information from:
Vincentz Network Schiffgraben 43 30175 Hannover Germany Fax: +49 511 9910-279
http://www.coatings.de/ecc.cfm amanda.beyer@coatings.de 


Meet environmental requirements, improve process efficiency and ensure quality of finish
24 - 25 February 2005,
The Crowne Plaza City Centre Hotel,  Brussels, Belgium

Printing Ink Technology
February 28 - March 2, 2005
Training Course; Teddington/UK
More Information from: Paint Research Association 8 Waldegrave Road Teddington
TW11 8LD Middlesex UK Fax: +44 20 8943-4705 http://www.pra.org.uk/training/index.htm

Wasserlackiertechnik Automotive
7 - 9 March. 2005
DFO e.V. Details ...

Applied Rheology for the Coatings Industry
7 March. 2005
Paint Research Association Details ...

Principles of Waterborne Coatings
8 - 9 March. 2005
Paint Research Association Details ...

Asia Coatings Forum 2005
9 - 10 March 2005,
Hotel Equatorial, Ho Chi Minh City, Vietnam.
Contact: The  Coatings Group, dmg world media, Queensway House, 2 The Queensway House, 2  Queensway, Redhill, Surrey, RH1 1QS, UK. Tel: (+44) 1737 855284 Fax: (+44) 1737 855284 Email: tickets@uk.dmgworldmedia.com

12 - 15 March. 2005
Maxima International Exhibitions Details ...

Pulverlackiertechnik - Grundlegende Zusammenhänge für die Praxis
14. - 18 March. 2005
DFO e.V. Details ...

FLEXO 2005
Solutions for the printing of flexible & corrugated packaging, labels, folded cartons and related applications.
15 - 17 March 2005, NEC, Birmingham, UK.
Michelle A.Corbyn Event Manager Tel: +44 (0)20 7915 5687 Fax: +44 (0)20 7915  5021.

Fluid Sealing Course
15. - 16 March. 2005
BHR Group Limited, Mark Butcher Details ...

Expo Coating 2005
15 - 17 March 2005
ITE Group Plc Details ...

Color Design Technology
15 - 17 March. 2005
EMU Livonia Campus, MI/USA
Eastern Michigan University Details ...

Hygienic Coatings & Surfaces
16 - 17 March. 2005
Paint Research Association Details ...

SVLFC Generalversammlung
17March 2005
Schaffhausen/Switzerland and STO Werk Weizen/Germany
SVLFC, Dr. Nicole Frick Details ...

What is Paint?
21 March 2005
Paint Research Association Details ...

Coatings and Paint Technology: Composition and Application Fundamentals
22.3. - 24.3. 2005
Ypsilanti, MI/USA
Eastern Michigan University Details ...

Powder Coating Technology
22- 23March 2005
Paint Research Association Details ...

Annual Exhibition and Conference of the Romanian paint industry. 29 - 31
March 2005, Bucharest, Romania  ...




  Powder Coating Manual -"The Powder Booth"------ (Part - 37)  
Cartridge Recovery System Air Flow
The containment air flows through the cartridges carrying powder and depositing it on the cartridges. The compressed air blow pipe discharges on a sequenced basis and the powder falls to the base of the collector.

Combination Cyclone/Cartridge Module Booth
There are booths available that combine some of the advantages of the cyclone system with the advantages of the module reclaim system. The theory with this design is to give the operator flexibility and efficiency in one booth.

The cyclone system can be used for short runs of various colors and the overspray can be captured for reuse or scrap. For larger volume colors, a cartridge module can be used to take advantage of the higher reclaim percentage or one module can be used to collect small volumes of various colors.

For installations that use only one booth this is an excellent alternative. The high efficiency of the module is available as well as the ability to collect any number of colors for reuse without the need for additional equipment.

Selection Criteria
Each type of recovery system has advantages depending on the application. The major selection criteria are available space, color change requirements, airflow characteristics, powder utilization, capital equipment cost, and operating costs.

Available Space - One important criteria when selecting a powder system is the available floor space and height restrictions. The cartridge recovery system is typically the most compact design in floor space requirements, however, due to the collector and blower being mounted directly to the booth, each color to be recovered will require its own module, adding to the cost and space requirements. The cyclone system requires more headroom because the cyclone and cartridge collector stands much higher than the booth. The floor space required for this system is greater because the cyclone and final filter are remotely mounted using interconnecting ductwork. The twin air belt system does not require the headroom of either the cartridge or cyclone system because the floor can be closer to the ground than other systems. The floor space required for the filter belt design can be greater than a cartridge system due to the remote reclaim system. However, the reclaim system can be located in an open area away from the booth providing layout flexibility. Color Change Requirements - The actual time required to change colors in any of these booths depends on the quality of finish required, how many people work on it, number of powder guns, the size of the booth and the amount of duplicate equipment for dedicated colors. The cost and time required to color change can vary drastically between the different recovery systems. To reclaim each color in a cartridge booth, a dedicated collector is required. With a cyclone system or a filter belt booth using the cyclone or mini-cyclone, multiple colors can be reclaimed without any additional equipment. An average cartridge system takes 30 to 60 minutes to change, the cyclone system takes 30 to 90 minutes and the twin air belt takes 60 to 120 minutes to change over.

The other important factor to consider on color change is the number of colors and the interval between color change. If the time between color changes is long and the number of colors is few, the cartridge module system makes sense because it will provide the highest potential reclaim percentage. When the time between color changes is short, or there are a lot of colors, then the cyclone system becomes more practical.

The cartridge system is less practical when there are many colors required due to the added cost in dedicated color modules. The cyclone system is better when many colors are run for short intervals because there is no need for additional recovery equipment. The twinair- belt system is difficult to color change, making it impractical for most multi-color systems.

Lines with two or more booths can change colors with a minimum of production loss. One booth can be prepared for another color off-line while the second booth is in production.

Powder Utilization - Although there is some powder loss in a cyclone system, a well-designed system can provide 70% to 90% material  utilization. Typical utilization for the filter belt using a mini-cyclone is 85-95%. In a cartridge module system, there is virtually no powder loss due to the nature of the recovery design. These systems typically provide from 90 to 98% overall material utilization. Always keep in mind in any economic evaluation that there is a certain amount of loss on racks and in handling. Also, testing has shown that the fine particles (less than 20 micron) of powder do not contribute much to the film. So as the percentage of fines increases, the material will become less efficient. In some operations, it is necessary to periodically dispose of the powder in the cartridge module due to accumulation of fines.

To avoid excess accumulation of fines, the overspray should be consumed fast enough to maintain a low level of powder in the cartridge collector. In order to consume the over sprayed powder fast enough to avoid accumulation the first pass transfer efficiency (FPTE) must be near 50% or better. If the percent of overspray exceeds 50% the powder level in the collector will continue to rise when fresh material is added.

Capital Equipment Cost - The cyclone system and the cartridge system are close to the same cost until you add additional cartridge modules. For one color operation, the cartridge module is the lowest cost. Additional modules will add significantly to the cost. The twin air belt system is the most expensive type of system. System costs depend heavily on the number of colors required.

Operating Cost - The operating cost for a cartridge system can be higher than both the cyclone and twin air belt booths due to the amount of compressed air used in the collector unit and more frequent replacement of cartridges. Compressed air is required to fluidize the powder in the bottom of the collector and provide the necessary pressure for back pulsing. The cartridges tend to wear a little faster because they are subjected to a higher volume of powder and more frequent back pulse at higher pressure.

In a filter belt system, you should also consider the electrical requirements for the addition of the reclaim exhauster and the belt drive. The selection of a recovery system must consider all of the system requirements. All recovery systems have advantages and limitations.

The primary advantage of the cyclone system is the ability to run many colors without adding additional reclaim equipment. It is best suited to shorter runs of smaller volume. The disadvantages are a slightly lower material utilization percentage and some additional safety considerations.

The primary advantage of a cartridge module system is the highest possible material utilization percentage. All of the overspray is collected for reuse. The disadvantage is the need for a module for every color that is reclaimed for reuse. The primary advantage of the filter belt booth is the potential for high transfer efficiency. This is due to the broad surface of the belt for exhaust air. The broad surface area allows the volume of air required for containment to spread out and moved at a very slow velocity so that it does not interfere with powder deposition.

Another option that is part of the consideration is spray-to-waste. In some operations with short runs of many colors it is not practical to invest the time and money into reclaim. Spray-to-waste can be done with a batch booth, cartridge booth or cyclone system. The powder is captured and disposed of instead of being recycled into the system. Spray-to-waste is strictly an economic decision. The cost of equipment and labor for recovery is compared to the cost of the scrap powder.  A system that does not reclaim powder can be color changed faster than a system that reuses overspray. The guns and feed system must be cleaned the same as the reclaim operation but the booth interior does not have to be cleaned as thoroughly and the recovery system does have be switched.

If automatic guns are used for spray-to-waste, multiple feed hopper may be required. Automatic guns are usually fed from a large feed
hopper that is very difficult to color change. If the cost of dedicated feed hoppers is not practical, two 80 lb. canisters can be used, one for
half of the automatic guns and one for the other half. This size of canister can be quickly emptied, dismantled and cleaned.



Dear Mr.Vivek,
Thank you very much for your cooperation and the useful information you regularly send to participants.
Mr.Ousama Sate'a
Business Development Manager
Damascus - Syria
Dear Sir / Madam :

Presently I am Working for Asian Paints and is having exp of 5 years in feild of powders. Located at north. It will be good for me to keep myself updated on powder activities.

Thanks & Regards
Shammi Sharma-

Dear sir,
I have came to know that you are in field of powder coating for a long time. I want to start a powder coating plant for coating of bangles.
Manish Shrivastav, India

I am currently promoting the Zircotec Technologies website and I am  interested in exchanging links with your website.



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Off topic

Your eyes can deceive you. Don't  trust them

The squares marked "A" and "B" are the same shade of grey. Don't agree? Try these methods to prove for yourself.

 1. Try putting the image in Photoshop.

Using the eyedropper tool you can determine that the RGB values of the grays in both square A and square B are same.

2. Cut out a cardboard mask.

By viewing patches of the squares without the surrounding context, you can remove the effect of the illusion. A piece of cardboard with two circles removed will work as a mask for a computer screen or for a printed piece of paper.

3. Print the image and cut out the squares.

This is another way to isolate the patches form their surrounding context. Cut out each square along the edges. Remove them. Hold them side by side. Please note that some printers, especially laser printers, have "enhancement" processing that increases the contrast of edges. This can cause the printed squares to have slightly different values of gray.
4. Get a photometer.

5. Still don't believe? click here

The visual system needs to determine the color of objects in the world. In this case the problem is to determine the gray shade of the checks on the floor. Just measuring the light coming from a surface (the luminance) is not enough: a cast shadow will dim a surface, so that a white surface in shadow may be reflecting less light than a black surface in full light. The visual system uses several tricks to determine where the shadows are and how to compensate for them, in order to determine the shade of gray "paint" that belongs to the surface.

As with many so-called illusions, this effect really demonstrates the success rather than the failure of the visual system. The visual system is not very good at being a physical light meter, but that is not its purpose. The important task is to break the image information down into meaningful components, and thereby perceive the nature of the objects in view


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