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Hybrid wood products

A product, wood-based technology, applied in the field of treated cellulosic materials, which can solve the problems of increased cost, environmental friendly impact, etc., and achieves the effect of dimension stability

Inactive Publication Date: 2015-11-25
ARMSTRONG WORLD INDUSTRIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in addition to increasing costs, traditional impregnation chemicals can have an impact on the potential environmental friendliness (greenness) of wood flooring products

Method used

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  • Hybrid wood products

Examples

Experimental program
Comparison scheme
Effect test

other Embodiment approach

[0010] Other embodiments provide a densified wood product having a first ply is a densified veneer and a second ply is glued to the first ply.

[0011] Still other embodiments provide a compacted wood product wherein the first layer is compacted wood, the second layer is glued to the first layer, and the product is machined to include locking profiles, such as tongue and groove edge.

[0012] Other characteristics and advantages of the present invention will appear from the following more detailed description of the preferred embodiment.

[0013] Specific instructions

[0014] As used herein, the term "thermocompressed" or "thermocompression" refers to a product or process that uses thermal and mechanical compression (among others) to densify a substrate. Typical thermal compression techniques are described in US Patent No. 7,404,422 to Kamke et al., which is hereby incorporated by reference in its entirety.

[0015] In some embodiments, the compression process includes the...

example 1

[0048] To carry out the impact resistance test, a steel ball with a diameter of 1-1 / 2 inches supported on the frame is dropped from a predetermined height, and if there is an impact, the maximum impact depth on the surface of the wood flooring product is measured. Smaller depths or indentations indicate greater impact resistance. A first ply consisting of a typical hardwood (Hard Maple) and a typical softwood (Ponderosa Pine) was evaluated for the impact of thermal compression on impact resistance. As shown in Table 1, thermal compression had the least effect on hardwoods. In contrast, the effect of thermocompression on cork, shown in Table 2, is considerable. In particular, the data shown in Table 2 illustrate the unexpected improvement in impact resistance of representative products of the present invention.

[0049] Table 1

[0050] product

Dent (inch)

Comparative Example I (Untreated Hard Maple)

0.014

Comparative Example II (Heat-Compress...

example 2

[0054] Thermocompressed and untreated samples were evaluated for color differences based on calculations of delta values ​​as deviations from the measured x,y color coordinates of a black body radiator. For the duration of the test, it was exposed to a xenon arc for 100 hours at a wavelength of 280nm-800nm ​​and filtered to approximate sunlight passing through window glass. At the end of the test, the test results vary from the initial color reading to the final color reading. A small difference is good, as shown in Table 3, the wood product with the thermocompressed first layer has greater resistance to fading than the untreated wood.

[0055] table 3

[0056] product

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Abstract

Described herein are hybrid wood products comprising: a first layer comprising a first thermally compressed cellulosic substrate; a second layer comprising a fiberboard, a wood- plastic composite, or a vinyl composite; and a locking profile.

Description

[0001] Cross references to related patent applications [0002] This application claims priority to US Provisional Patent Application Serial No. 61 / 806,702, filed March 29, 2013, which is hereby incorporated by reference in its entirety. field of invention [0003] The present invention relates to a treated cellulosic material. In particular, the invention relates to flooring materials with a densified cellulose matrix. Background technique [0004] Wooden floors are subject to seasonal expansion and contraction in an environment with varying equilibrium moisture content (EMC). When the equilibrium moisture content level plummets, the planks shrink, creating gaps between the wood floors. During periods of rising and falling equilibrium moisture content, the dimensions of the installed wood floor change, causing warping (moisture absorption from the bottom of the product), a condition where the floor is high at the edges and low in the center; or heaving (moisture absorptio...

Claims

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Application Information

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IPC IPC(8): E04F15/04B27M1/02B27K5/06B27K5/00
CPCB27K5/065B27K5/001B27M1/02B32B3/06B32B7/12B32B21/02B32B21/10B32B2262/062B32B2307/51B32B2307/558B32B2307/734B32B2471/00E04F15/042
Inventor 布莱恩·比克勒史蒂文·布科夫斯基苏尼尔·拉马钱德拉
Owner ARMSTRONG WORLD INDUSTRIES
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