Method of powder coating wood substrate
AssigneeH.B. Fuller Licensing & Financing, Inc.
InventorsJames A. E. Hagquist, Walter J. Blatter
Life of this patent
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Abstract
The invention relates to a process for coating powders on wood substrate comprising pre-treating at least one surface of the substrate with a substantially solvent free treating composition, applying a powder coating composition on the pre-treated surface of the substrate; and curing the powder coating composition. The treating composition includes at least one thermoset material and has a viscosity that is sufficiently low to allow the treating composition to wet out the surface(s) of the substrate and to penetrate into the surface fiber structure of the substrate.
Claims31
A method of coating wood substrate, comprising:
- a) pre-treating at least one surface of said substrate with a substaiitially solvent-free treating composition, said treating composition comprising at least one thermoset material and having a viscosity that is sufficiently low to allow said treating composition to wet out said surface and to penetrate into surface fiber structure of said substrate;
- b) applying a powder coating composition chosen from thermosetting powder coating compositions, UV curable powder coating compositions, and hybrid UV/thermosetting powder coating compositions on said pre-treated surface of said substrate;
- and
- c) curing said powder coating composition.
A method of reinforcing wood substrate, comprising treating said wood substrate by applying a substantially solvent-free treating composition on at least one surface of said substrate, said treating composition comprising at least one thermoset material chosen from one-part moisture curable polyurethanes, trimetized polyurethanes, latent cured alkyd resins, modified plastisols, latent cured liquid epoxies, and combination thereof and having a viscosity that is sufficiently low to allow said treating composition to wet out said surface and to penetrate into surface fiber structure.
A method of coating wood substrate, comprising:
- a) pre-treating at least one surface of said substrate with a treating composition said treating composition comprising greater than 90 wt % of at least one thermoset material and having a viscosity that is sufficiently low to allow said treating composition to wet out said surface and to penetrate into surface fiber structure of said substrate;
- b) applying a powder coating composition chosen from thermosetting powder coating compositions, UV curable powder coating compositions, and hybrid UV/thermosetting powder coating compositions on said pre-treated surface of said substrate;
- and
- c) curing said powder coating composition.
An article comprising:
- a wood substrate,
- a cured treating composition on at least one surface of said substrate, said treating composition being substantially free of solvent, comprising at least one thermoset material, and having a viscosity that is sufficiently low to allow said treating composition to wet out said surface and to penetrate into surface fiber structure of said substrate;
- and
- a cured powder coating composition deposited on said treating composition, said powder coating composition being chosen from thermosetting powder coating compositions, UV curable powder coating compositions, and hybrid UV/thermosetting powder coating compositions.
An article comprising a wood substrate and a treating composition on at least one surface of said substrate, said treating composition being substantially free of solvent, comprising at least one thermoset material chosen from one-part moisture curable polyurethanes, trimerized polyurethanes, latent cured alkyd resins, modified plastisols, latent cured liquid epoxies, and combination thereof, and having a viscosity that is sufficiently low to allow said treating composition to wet out said surface and to penetrate into surface fiber structure of said substrate.
Dependencies are inferred from the claim text.