Poor Film Build, Too Thin:
- Marginalized ground
Recheck electrical continuity for the conveyer
Equipment suppliers have a resistance ohms limit for the line. Confirm you are below that limit high resistance gives the gun a varying voltage from beginning to end of spray
Poor ground shows up often as a pattern of poorly coated area on parts. Without proper ground parts build up charge so the effective charge of the gun is reduced.
- Use clean hooks with sharp contact to the part
Scrape clean as needed
- No unused hooks through the spray booth
Coating unused hooks eliminates the ground by insulating the contact points
Improper Gun Settings for parts:
- Powder Concentration too High
Reduce Powder Volume settings
The Gun charges the air in a corona between the gun tip and the grounded part. That corona in turn charges the powder. If the powder volume is excessive there in not the opportunity for the powder to get properly charged
- Air Volume too High
Slow down the Powder Delivery Velocity
Powder can be blown past the part before the electrostatic charge can take effect
- Air Moisture Level too High
Control the Spray room environment
Excessive moisture draws the charge out of the corona so the effect is like having too much powder or lowered voltage at the gun tip
- Control the plant air supply moisture level
Our goal is to remain an environmentally conscious company, committed to manufacturing premium quality products. We are based in Eugene, Oregon with our manufacturing plant and a contractor outlet. We are certified dealers of FORREST Industrial coatings, PPG Industrial products , Jotun International products, and Imperial Paint products.
990 McKinley Street – Eugene, Oregon 541-868-1222
2526 Northwest Yeon Ave – Portland, Oregon 503-228-0207
1741 South Central Ave – Kent, Washington 253-854-6372
3808 North Sullivan Road, Bldg. N-17 – Spokane, Washington 509-924-3785
1011 McKinley Street – Eugene, Oregon 541-342-1821
The Stove Bright® brand is the flag ship brand for FORREST Technical Coatings
Poor Film Build, Too Thick:
- Excessive film build , uneven
Set voltage down 20% from normal settings
Excess Voltage causes the electrostatic properties of Ferriday cage and the opposite to overcome the applicators attempt to control the film build
- Increase gun to part distance
Maintain 8 inches between gun and parts closer guns leave pattern spray and overpower electrostatic support
- Reduce powder cloud density
Set feed powder volume lower
High cloud density leads to high corona charge and low powder voltage charge. The worst combination for faraday charge areas.
- Reduce Powder Air velocity
Turn powder support or conveying air down
High conveying air can blow powder away from inside corners
- Control external air movement
Block baffle or enclose the spray area from external air movement
Transient air movement will make the part uneven with thinnest areas on the windward thickest the lee of air movement
The FORREST team at the HPBA Hearth Trade Show 2017. FORREST won an award for 35 years at the trade show.
Tour of the new Powder Labs, Phase 1 of 3 to upgrade the department’s work area and production. Great Job guys.
About 1980 we built the aerosol building and installed the aerosol filling line. This was a major investment that required committing and prioritizing resources to open a new line of business. To accommodate greater need for space, we built phase one of the back warehouse (raw materials) in 1985 and followed that with phase two (finished goods shipping) in 1990. In 1995, we built the “new” Eugene store and original powder facility. Around 2000, we added on to that facility for additional powder warehousing and also completely renovated water based paint making with new mezzanines and equipment to increase production capacity and efficiency. In 2005, we started planning an extensive new building at the 990 McKinley site, and (in retrospect) wisely decided the timing was not good for such a major investment on the eve of the great recession. Instead, we were able to purchase the Broadway annex in 2012 and connected that to our liquid production facility to create a new dedicated receiving warehouse.
FORREST Technical Coatings first ribbon-cutting event in its history. We have had many remodel upgrades over the years, but not to the extent of the remodel of our Powder facility. This represents the completion of stage 1 of 3 stages. We are not adding to the building square footage, just redesigning the use of the current areas. The remodeled area houses a new clean area for the Powder chemists. This should fine-tune the research and development process. Great job, to all that have worked on the project.
President of FORREST
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GEORGE ARDOLINO- sales rep in the northeast USA
Garret Nehl – the Product Manager
Silvia Null Marketing & Sales
Heath Banry – Director of Marketing
Pete Bouchard aka Mr. Stove Bright -Consumer Products Manager
Brad May – Northwest Sales Rep
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