Curing Polyurethane on Wood

Can you help us find a polyurethane varnish that will cure in our warm-air oven?


Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Q. I own a specialty woodworking company, and we supply products like mantels, railings and moldings to the residential and commercial building industries. Some of these products are shipped coated, so we have spray painting and curing equipment in our shop. We want to upgrade our finishes and are looking at polyurethane varnishes because of their greater durability. In particular, we’re looking for a polyurethane varnish that will cure in our warm-air oven. We also have the option of running infrared heaters when needed. Can you help us find such a coating? W.J.

A. Curing in warm-air ovens is called forced drying. This method is often used in finishing wood and other heat-sensitive products to increase production. Both single-package and two-package polyurethane finishes can be cured in your oven, but remember to allow sufficient flash-off time before putting parts in a force-drying oven to prevent solvent popping. I suggest you ask your present varnish supplier or go to your local coating company store for product recommendations.  


  • Automotive Applications of UV-Cured Coatings

    UV technology is considered by many to be the “up-and-coming” technology for curing industrial coatings. Though it may be new to many in the industrial and automotive coatings industry, it has been around for more than three decades in other industries...

  • Dis-Charge Your Powder

    A practical approach to managing electrostatic problems and hazards during powder coating

  • Infrared Curing: Evaluating the characteristics of IR energy

    Infrared (IR) energy can be used as a source of heat to cure a variety of industrial coatings. Such infrared curing applies energy to the coated part surface by direct transmission from an IR emitter, which can provide source temperatures of anywhere from 500 to 4,200°F