Composite wood flooring and method of making the same

Patent metadata

Field	Value
Publication number	US-9744753-B2
Application number	US-201514615927-A
Country	US
Kind code	B2
Filing date	Feb 6, 2015
Priority date	Feb 12, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A method of making a composite panel configured for use with a flooring assembly of a trailer includes providing a wood substrate, making an uncured fiber-reinforced coating, and applying the uncured fiber-reinforced coating onto a surface of the wood substrate. The method further includes curing the uncured fiber-reinforced coating after applying the uncured fiber-reinforced coating onto the surface of the wood substrate.

First claim

What is claimed is:

1. A method of making a composite panel configured for use with a flooring assembly of a trailer comprising:
providing a wood substrate;
making an uncured fiber-reinforced coating;
applying the uncured fiber-reinforced coating onto a surface of the wood substrate; and
curing the uncured fiber-reinforced coating after applying the uncured fiber-reinforced coating onto the surface of the wood substrate.

2. The method of claim 1 , wherein making the uncured fiber-reinforced coating includes (i) orienting a plurality of individual fiber rovings along a longitudinal axis of the wood substrate, (ii) positioning a fiber mat adjacent the plurality of individual fiber rovings, and (iii) feeding the plurality of fiber rovings and the fiber mat through a resin bath.

3. The method of claim 2 , wherein the fiber mat includes a plurality of uni-directional fibers, and wherein positioning the fiber mat adjacent the plurality of individual fiber rovings includes orienting the plurality of uni-directional fibers of the fiber mat perpendicular to the plurality of individual fiber rovings.

4. The method of claim 2 , wherein applying the uncured fiber-reinforced coating includes placing the fiber mat directly adjacent the surface of the wood substrate.

5. The method of claim 1 , further comprising applying a release film on top of adjacent an outer surface of the uncured fiber-reinforced coating before curing the uncured fiber-reinforced coating.

6. The method of claim 1 , wherein curing the uncured fiber-reinforced coating includes advancing the wood substrate, including the uncured fiber-reinforced coating thereon, through a heated die.

7. The method of claim 1 , wherein curing the uncured fiber-reinforced coating includes advancing the wood substrate, including the uncured fiber-reinforced coating thereon, through a heated double belt press.

8. The method of claim 7 , wherein the double belt press is an isobaric double belt press.

9. The method of claim 1 , wherein curing the uncured fiber-reinforced coating includes advancing the wood substrate, including the uncured fiber-reinforced coating thereon, between an isobaric pressure assembly and a heated platen.

10. The method of claim 9 , wherein the isobaric pressure assembly includes a plurality of rocker-arm pressure wheels in fluid communication with one or more pneumatic bellows.

11. The method of claim 9 , wherein the isobaric pressure assembly includes a belt drive.

12. The method of claim 1 , further comprising preheating the wood substrate prior to applying the uncured fiber-reinforced coating onto the surface of the wood substrate.

13. A method of making a composite panel configured for use with a flooring assembly of a trailer comprising:
providing a wood substrate;
making an uncured fiber-reinforced coating;
applying the uncured fiber-reinforced coating directly onto a surface of the wood substrate without the use of an adhesive between the uncured fiber-reinforced coating and the surface of the wood substrate to create an uncured composite assembly; and
applying heat to the uncured composite assembly in order to cure the uncured fiber-reinforced coating on the wood substrate.

14. The method of claim 13 , further comprising applying a release film on top of the uncured fiber-reinforced coating before applying heat to the uncured fiber-reinforced coating.

15. The method of claim 13 , wherein the composite panel consists of a wood substrate defining a longitudinal axis, and a coating including a (i) plurality of first fibers configured to extend perpendicular to the longitudinal axis of the wood substrate, (ii) a plurality of second fibers configured to extend parallel to the longitudinal axis of the wood substrate, and (ii) a resin matrix around the plurality of first and second fibers.

16. The method of claim 13 , wherein making the uncured fiber-reinforced coating including (i) orienting a plurality of individual fiber rovings along a longitudinal axis of the wood substrate, (ii) positioning a fiber mat adjacent the plurality of individual fiber rovings, and (iii) advancing the plurality of fiber rovigins and the fiber mat through a resin bath, and wherein applying the uncured fiber-reinforced coating includes orienting the uncured fiber-reinforced coating to locate the fiber mat adjacent the surface of the wood substrate and to locate the plurality of individual rovings spaced-apart from the surface of the wood substrate to position the fiber mat between the surface of the wood substrate and the plurality of fiber rovings.

17. The method of claim 16 , wherein making the uncured fiber-reinforced coating further includes adding at least one of clay and fumed silica to the resin bath.

18. The method of claim 13 , further comprising applying constant pressure to the uncured composite assembly.

19. The method of claim 18 , wherein the constant pressure is approximately between 5-35 psi.

20. The method of claim 18 , wherein applying the constant pressure includes advancing the uncured composite assembly through an isobaric pressure system including an isobaric pressure mechanism having a plurality of pneumatic bellows and a plurality of rocker-arm pressure wheels coupled to the plurality of pneumatic bellows.

21. The method of claim 13 , further comprising abrading the surface of the wood substrate before applying the uncured fiber-reinforced coating directly onto the surface of the wood substrate.

22. A method of making a composite panel configured for use with a flooring assembly of a trailer comprising:
advancing a wood substrate through a coating system to apply a wet, uncured fiber reinforced coating to one surface of the wood substrate to create an uncured composite assembly; and
advancing the uncured composite assembly through a curing system to apply heat to the uncured composite assembly and cure the uncured fiber reinforced coating when the fiber reinforced-coating is on the wood substrate in order to create the composite panel,
wherein advancing the wood substrate through the coating system and advancing the uncured composite assembly through a curing system occur in a single, continuous manufacturing line.

Assignees

• Wabash National Lp

Inventors

• Sheffield Matthew S
• Bartlett Eddie J
• Cantwell Timothy D

Classifications

• B32B2317/16

  Wood, e.g. woodboard, fibreboard, woodchips · CPC title

• B29D99/001

  Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings (articles with hollow walls B29D24/00) · CPC title

• B32B2313/04

  Carbon · CPC title

• B27K3/15

  Impregnating involving polymerisation {including use of polymer-containing impregnating agents (macromolecular compounds derived from lignocellulosic materials C08H; compositions of lignin-containing materials C08L97/02)} · CPC title

• B32B2309/12

  Pressure · CPC title