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-2017100730-A1
Application number	US-201615382686-A
Country	US
Kind code	A1
Filing date	Dec 18, 2016
Priority date	Sep 16, 2014
Publication date	Apr 13, 2017
Grant date	—

Abstract

The present invention has to do with an efficient system for coating and curing 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

1 - 13 . (canceled)

14 . A focused infrared apparatus for curing a primer coated edge, the apparatus comprising:
at least one focused infrared (IR) emitter assembly, wherein the at least one focused IR emitter assembly is adaptable to emit IR energy substantially matched to a predetermined absorption characteristic of the primer; and wherein, the at least one focused IR emitter assembly is adaptable to emit a focused IR energy pattern substantially focused on the primer coated edge.

15 . The focused infrared apparatus as in claim 14 wherein the at least one focused IR emitter assembly is adaptable to emit a focused IR energy pattern comprising substantially a 60 degree arc.

16 . The focused infrared apparatus as in claim 14 wherein the at least one focused IR emitter assembly comprises:
a pair of infrared emitters;
a transmission medium, wherein the transmission medium comprises quartz glass; and
a reflector, wherein the reflector comprises:
a gold coating reflector.

17 . The focused infrared apparatus as in claim 14 wherein the at least one focused IR emitter assembly comprises:
a pair of infrared emitters;
a transmission medium, wherein the transmission medium comprises quartz glass; and
a reflector, wherein the reflector comprises:
an opaque quartz glass reflector.

18 . An apparatus for edge curing engineered wood products (EWP) with trailing and leading edges and supported by a conveyor track, the apparatus comprising:
a first infrared (IR) emitter assembly, wherein the first infrared emitter assembly comprises:
a first plurality of infrared emitters for emitting an IR energy field;
a first reflector adaptable to reflect the IR energy field emitted by the first plurality of IR emitters;
a second infrared emitter assembly, wherein the second infrared emitter assembly comprises:
a second plurality of infrared emitters for emitting an IR energy field;
a second reflector adaptable to reflect the IR energy field emitted by the second plurality of IR emitters; and
wherein the first IR emitter assembly and the second IR emitter assembly are disposed on opposite sides of the conveyor track and offset from a common axis by a predetermined amount, and wherein the first IR emitter assembly and the second IR emitter assembly are adaptable to overlap respective IR energy fields onto the trailing edge of the EWP.

19 . The apparatus as in claim 18 , further comprising:
the first reflector adaptable to reflect the IR energy field is further adaptable to focus a first infrared energy field comprising substantially a 60 degree arc; and the second reflector adaptable to reflect the IR energy field is further adaptable to focus a second energy field comprising substantially a 60 degree arc.

20 . The apparatus as in claim 18 wherein:
the first reflector comprises a reflector selected from the group consisting of a gold reflector and an opaque quartz glass reflector; and
the second reflector comprises a reflector selected from the group consisting of a gold reflector and an opaque quartz glass reflector.

Assignees

• Heraeus Noblelight Gmbh

Inventors

• Chapman Michael J

Classifications

• B05D3/0263 Primary

  with IR heaters · CPC title

• B05B5/025 Primary

  Discharge apparatus, e.g. electrostatic spray guns · CPC title

• B05D1/06

  Applying particulate materials · CPC title

• B05D7/08

  using synthetic lacquers or varnishes · CPC title

• B05D2401/32

  applied as powders · CPC title