Potential Finish Problems With Various Wood Types Interior OEM Wood Coatings General Applications Overview Jim Bohannon Alberdingk Boley, Inc.
Common Wood Types In Furniture And Cabinets (solid and veneer)
Red Oak
Ash
White Oak
Hickory
Cherry
Poplar
Maple
Gum
Birch
Pine
Beech
Alder
Walnut
Pecan
Mahogany
Rubber Wood
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Common Wood Types In Flooring (solid and veneer)
Red Oak White Oak Maple Hickory Ash Bamboo Cherry Exotic Woods
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Typical Spray Finish Steps For Cabinet Doors and Parts
Stain (Solvent Borne or Waterborne) Sealer (Solvent Borne or Waterborne) Topcoat (Solvent Borne or Waterborne)
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Typical Spray Steps For Furniture
Stain (Solvent Borne or Waterborne) Washcoat (SB or WB) Spray and Wipe Stain (SB or WB) Sealer (SB or WB) Topcoat (SB or WB) Topcoat (SB or WB)
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Typical OEM Steps For Flooring
Stain (Machine Roller SB or WB) Sealer (Machine Roller 100% UV or WB UV) Sealer (Machine Roller 100% UV) Sealer (Machine Roller 100% UV) Topcoat (Machine Roller 100% UV) Topcoat (Machine Roller 100% UV)
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Potential Problems Maple Finish (close pore) Veneer and Solid
Soakers on soft areas (non-uniform build) Dark spots on soft areas (non-uniform color) Adhesion on polish sanded hard areas Color change on natural/ light finishes with age
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Potential Problems Oak Finish (open pore) Veneer and Solid
Bubbles, blisters Pinholes White pore on dark finish Veneer checking, cracking with age Water damage on edges
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Natural Wood Feature Problems
Mineral Streaks Tannin Rosin Oils These can bleed through and discolor certain coatings and/or cause adhesion problems. A variety of coatings which resist these problem features are available from coatings suppliers.
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Wood OEM Coatings Types For Sealers And Topcoats
Nitrocellulose Alkyd Lacquer Acid Cure Varnish and Lacquer UV Cure 100%, SB, WB Waterborne Acrylic, PUD Other-CAB Acrylic, Vinyl, 2K Urethane
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Nitrocellulose Alkyd Lacquer
Advantages:
Disadvantages:
Excellent appearance/wood tonegrain definition
More prone to damage on wear surfaces/edges
Easy to repair or strip
Flammable solvents
No pot-life problems
High flame spread surface
Easy to spray apply
Higher VOC (typical)
Economical
Lower transfer efficiency
Partially renewable
Prone to yellowing
Can air dry
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Acid Cure Varnish and Lacquer
Advantages:
Disadvantages:
Very durable to damage on wear surfaces and edges
Emits formaldehyde
Excellent appearance/wood tonegrain definition
Moderate VOC
Good build per coat Easy to spray
Pot-life Flammable solvents More difficult to reclaim overspray
Economical Partially renewable
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UV Waterborne
Advantages:
Disadvantages:
Very durable to damage on wear surfaces and edges
Some grain raise potential
Low VOC/no formaldehyde Non-flammable Good transfer efficiency Can reclaim overspray No pot-life Good build per coat
Must evaporate water 6-8 min FD before UV cure Initial investment in UV cure equipment Higher cost per gallon (off-set by transfer efficiency and reclaim) Protect from freezing
Fast process to stack/pack
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Waterborne Acrylic PUD
Advantages:
Disadvantages:
Moderately durable
Some potential for grain raise
Can air dry
Higher cost per gallon (partially off-set by transfer efficiency)
Low VOC No formaldehyde
Protect from freezing
Non-flammable Easy to apply No pot-life Good transfer efficiency
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UV 100%
Advantages:
Disadvantages:
Very durable
High cost per gallon (partially offset by transfer efficiency)
Low/no VOC No formaldehyde No pot life Economical roller application Fast process to stack/pack
Some monomers are significant sensitizers Initial investment in UV cure equipment Very limited practical spray application
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2K Urethane
Advantages:
Disadvantages:
Very durable
High cost per gallon
Excellent water resistance
Pot-life
Good appearance
High-moderate VOC (SB)
Good hand
Slower process to pack
No formaldehyde
Isocyanate in part B
Can formulate solvent borne or waterborne
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Questions?
Jim Bohannon Alberdingk Boley, Inc. 336-454-5000 Ext. 420
[email protected]
© Alberdingk Boley Inc.
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