Efficient infrared absorption system for edge sealing medium density fiberboard (MDF) and other engineered wood laminates using powder and liquid coatings

Patent metadata

Field	Value
Publication number	US-10737290-B2
Application number	US-201815870929-A
Country	US
Kind code	B2
Filing date	Jan 13, 2018
Priority date	Sep 15, 2015
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

The present invention has to do with an efficient system for coating and caring engineered wood products (EWP) in general, and the edges of EWPs in particular. An efficient system for coating and curing coatings is provided.

First claim

What is claimed is:

1. A hybrid cure oven for curing of a material on a product having a plurality of edges and faces, the hybrid cure oven comprising:
at least one infrared edge sealing oven, wherein the at least one infrared edge sealing oven comprises:
at least one focused infrared (IR) emitter assembly for radiating IR energy onto at least one of the plurality of edges, wherein the at least one focused infrared (IR) emitter assembly is selected from the group consisting of emitters adaptable to emitting a first radiation emission within a first infrared range of a spectra absorbed by a first molecule and emitters adaptable to emitting a second radiation emission within the first infrared range of the spectra absorbed by the first molecule, wherein the at least one focused IR emitter assembly further comprises a reflector, wherein the reflector comprises an IR radiation multiplying reflector for effectively multiplying the emitted IR energy radiated onto the at least one of the plurality of edges;
at least one focused infrared (IR) emitter assembly consisting of emitters adaptable to emitting a radiation emission within the first infrared range of the spectra absorbed by the first molecule selected from the group of water, polyethylene and polyvinyl chloride;
at least one quartz glass infrared emitter;
at least one infrared catalytic heater oven; and
a continuous conveyor track connecting the at least one infrared edge sealing oven and the at least one infrared catalytic heater oven.

2. The hybrid cure oven as in claim 1 wherein the at least one edge sealing oven comprises a plurality of air knives.

3. The hybrid cure oven as in claim 1 wherein the at least one focused infrared (IR) emitter assembly further comprises a first transmission medium and wherein the transmission medium comprises a focusing lens.

4. The hybrid cure oven as in claim 3 wherein the focusing lens comprises a Fresnel lens.

5. The hybrid cure oven as in claim 1 wherein the at least one focused infrared (IR) emitter assembly further comprises a second transmission medium and wherein the second transmission medium comprises quartz glass.

Assignees

• Heraeus Noblelight Gmbh

Inventors

• Chapman Michael J

Classifications

• B05D7/546

  each layer being cured, at least partially, separately · CPC title

• F26B15/14

  the objects or batches of materials being carried by trays or racks {or receptacles, which may be connected to endless chains or belts (trays, racks per se F26B25/18; with vertical movement F26B15/22)} · CPC title

• F26B3/30

  from infrared-emitting elements {(by radiation emanating from passages containing heated fluids other than combustion gases F26B23/10)} · CPC title

• B05D7/06

  to wood · CPC title

• B05D7/08

  using synthetic lacquers or varnishes · CPC title