Container flooring material and method of manufacture

• US 20050153150A1
• Filed: 08/27/2004
• Published: 07/14/2005
• Est. Priority Date: 08/27/2003
• Status: Abandoned Application

• Current Assignee: Alberta Innovates Technology Futures
• Original Assignee: Alberta Research Council Inc. (Alberta Science & Research Authority)
• Inventors: Jiang, Shenxue, Zhang, Qisheng, Wellwood, Rob, Chen, Liheng
• Application Number:
  US10/927,942
• Publication Number:
  US 20050153150A1
• Time in Patent Office: Days
• US Class Current: 428/537.100
• CPC Class Codes: B27D 1/04 to produce plywood or articles made therefrom; Plywood sheets making a layered veneer cutting block B27L5/00
• CPC Class Codes: B32B 21/04 comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a layer of a particular substance B32B9/042; next to a bituminous or tarry layer B32B11/042; next to a water setting substance layer B32B13/10; next to a metal layer B32B15/10; next to a glass layer B32B17/062; next to a layer formed of natural mineral fibres or particles B32B19/042; next to a cellulosic plastic layer B32B23/044
• CPC Class Codes: B32B 21/14 comprising wood board or veneer
• CPC Class Codes: B32B 2307/72 Density
• CPC Class Codes: B32B 2419/04 Tiles for floors or walls tiles for roofs B32B2419/06
• CPC Class Codes: B32B 9/02 comprising animal or vegetable substances , e.g. cork, bamboo, starch
• CPC Class Codes: Y02W 90/10 Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor
• CPC Class Codes: Y10T 428/24 Structurally defined web or sheet [e.g., overall dimension, etc.]
• CPC Class Codes: Y10T 428/24058 including grain, strips, or filamentary elements in respective layers or components in angular relation
• CPC Class Codes: Y10T 428/24066 Wood grain
• CPC Class Codes: Y10T 428/24132 including grain, strips, or filamentary elements in different layers or components parallel
• CPC Class Codes: Y10T 428/24744 Longitudinal or transverse tubular cavity or cell
• CPC Class Codes: Y10T 428/31971 Of carbohydrate
• CPC Class Codes: Y10T 428/31982 Wood or paper
• CPC Class Codes: Y10T 428/31989 Of wood

Abstract

A board suitable for use as container flooring uses bamboo and fast-growth low-density wood. Thin layers of high-density bamboo composites are used to overlay on surfaces of a core layer which can be the composite of wood veneer and wood strand-based composite, or wood veneer and bamboo stripe sheet composite. This invention combines the benefits of bamboo and wood materials to produce a bamboo-wood composite board having sufficient mechanical and physical strength and durability for use as container flooring.

Claims

1. A bamboo-wood composite board comprising:

(a) at least one surface layer comprised of a plurality of bamboo stripe sheets and resin;

(b) a core layer comprising at least one wood veneer layer and a support layer.

2. The board of claim 1 wherein the support layer comprises a wood strand layer or a wood veneer layer oriented perpendicular to the at least one wood veneer layer.

3. The board of claim 2 wherein the core layer comprises least four layers of wood veneers, alternating between grain parallel and grain perpendicular layers.

4. The board of claim 3 wherein the support layer further comprises at least one bamboo stripe sheet.

5. The board of claim 3 wherein the core layer comprises 17 layers of wood veneers, alternating between grain parallel and grain perpendicular layers.

6. The board of claim 3 comprising two surface bamboo layers, sandwiching the core layer.

7. The board of claim 2 wherein the support layer comprises a wood strand layer.

8. The board of claim 7 wherein the wood strand layer is an oriented strand layer.

9. The board of any preceding claim wherein the wood comprises a wood having a specific density of about 0.6 or less.

10. The board of claim 9 wherein the wood comprises poplar, aspen, spruce, fir, or pine.

11. A bamboo-wood composite board comprising:

(a) at least one surface layer comprised of a plurality of bamboo stripe sheets and a resin;

(b) a core layer comprising a wood strand layer.

12. The board of claim 11 wherein the wood strand layer comprises a low-density wood material.

13. The board of claim 12 wherein the low-density wood material is selected from the group consisting of poplar, aspen, spruce, pine or fir.

14. The board of claim 11 further comprising a wood veneer layer disposed between surface bamboo layer and the wood strand layer.

15. The board of claim 11 wherein the wood strand layer is an oriented strand layer.