Process for finishing a wooden board and wooden board produced by the process

• US 7,678,425 B2
• Filed: 03/04/2004
• Issued: 03/16/2010
• Est. Priority Date: 03/06/2003
• Status: Active Grant

• Current Assignee: Flooring Technologies Ltd
• Original Assignee: Flooring Technologies Ltd
• Inventors: Oldorff, Frank
• Primary Examiner(s): KILIMAN, LESZEK B
• Application Number:
  US10/792,270
• Publication Number:
  US 20040191547A1
• Time in Patent Office: 2,203 Days
• Field of Search: 427/383, 427/384, 427/393, 427/372.2, 427/408, 428/537.1, 428/195
• US Class Current: 427/384
• CPC Class Codes: E04F 15/02 Flooring or floor layers composed of a number of similar elements of webs E04F15/16
• CPC Class Codes: Y10T 156/1039 Surface deformation only of sandwich or lamina [e.g., embossed panels]
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24851 Intermediate layer is discontinuous or differential
• CPC Class Codes: Y10T 428/249925 Fiber-containing wood product [e.g., hardboard, lumber, or wood board, etc.]
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/31779 Next to cellulosic
• CPC Class Codes: Y10T 428/31942 Of aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31957 Wood
• CPC Class Codes: Y10T 428/31971 Of carbohydrate
• CPC Class Codes: Y10T 428/31982 Wood or paper
• CPC Class Codes: Y10T 428/31986 Regenerated or modified
• CPC Class Codes: Y10T 428/31989 Of wood

Abstract

A process for finishing a wood or wooden board, in particular an MDF or HDF board, with an upper side and an underside. The process includes applying a sealing layer of melamine resin to the upper side of the board and printing a decoration onto the sealing layer. A protective layer is applied of melamine resin to the decoration and the board is pressed under the action of temperature until the protective layer and the sealing layer melt and bond to each other with the inclusion of the decoration printed on.

Claims

1. Process for finishing a wood or wooden board, in particular an MDF or HDF board with an upper side and an underside, comprising the following steps:

a) applying a sealing layer of melamine resin to the upper side of the board,

b) printing a decoration onto the sealing layer,

c) applying a protective layer of melamine resin to the decoration, and

d) pressing the board under the action of temperature until the protective layer and the sealing layer melt and bond to each other with the inclusion of the decoration printed thereon.

2. The process as claimed in claim 1, further comprising the following steps:

applying a sealing layer of melamine resin to the underside of the board,

applying a colored layer to the sealing layer on the underside of the board,

applying a protective layer of melamine resin to the colored layer, and

pressing the board under the action of temperature until the protective layer and the sealing layer melt and bond to each other with the inclusion of the colored layer.

3. The process according to claim 1, wherein the upper side and the underside are finished at the same time.

4. The process according to claim 1, wherein a plurality of individual layers are applied for at least one of the sealing layer and the protective layer and each individual layer dries out before the application of the next.

5. The process according to claim 2, wherein the board is ground before the sealing layer is applied.

6. The process according to claim 4, further comprising providing corundum into at least one individual layer of the protective layer.

7. The process according to claim 4, further comprising scattering corundum onto at least one individual layer of the protective layer.

8. The process according to claim 4, further comprising mixing at least one of antibacterial and antistatic additives into at least one individual layer of the protective layer.

9. The process according to claim 4, further comprising scattering at least one of antibacterial and antistatic additives onto at least one individual layer of the protective layer.

10. The process according to claim 1, further comprising providing at least one filler into at least one of a sealing layer and the protective layer.

11. The process according to claim 10, wherein the filler is wood fibers, wood dust, metals, mineral substances, plastics or ash.

12. The process according to claim 1, wherein finishing of the upper side of the board is carried out only in some regions.

13. The process according to claim 10, wherein finishing is carried out on an area running obliquely with respect to the upper side.

14. The process according to claim 1, wherein a structure or at least one V joint is impressed into the protective layer.

15. The process according to claim 14, further comprising sawing the board centrally along the at least one V joint to create panels each having a chamfered edge.

16. The process of claim 1, wherein the applying the sealing layer and the printing are devoid of paper layers.

17. The process of claim 1, wherein the printing a decoration onto the sealing layer prevents impregnation of the printing onto the board.

18. The process of claim 1, further comprising:

grinding the board before the applying the sealing layer,

impressing a V-joint into the protective layer; and

sawing the board centrally along the at least one V joint to create panels each having a chamfered edge.

19. The process of claim 1, wherein:

the board is ground before the sealing layer is applied,

the sealing layer prevents printing ink from being absorbed by the board,

the applying the sealing layer includes applying a first plurality of layers, each individual layer of the first plurality of layers drying out before application of a next layer, and

the applying the protective layer includes applying a second plurality of layers, each individual layer of the second plurality of layers drying out before application of a next layer.