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Wood flooring with carbonized solid wood using symmetric structure and process for preparing the same

A symmetrical structure, wood floor technology, applied in chemical instruments and methods, wood layered products, building structures, etc., can solve problems such as poor dimensional stability

Inactive Publication Date: 2009-08-26
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with this technique is that it has poor dimensional stability due to the absence of heat-treated wood layers
[0007] U.S. Patent Publication No. 2005 / 0153150A1 discloses a bamboo board for container flooring, but it also exhibits insufficiently poor dimensional stability due to the lack of use of heat-treated wood layers

Method used

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  • Wood flooring with carbonized solid wood using symmetric structure and process for preparing the same
  • Wood flooring with carbonized solid wood using symmetric structure and process for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The carbonized solid wood layer 20 , the base layer 30 and the carbonized solid wood layer 20 are integrated into a symmetrical structure from top to bottom by pressing. Then, the surface treatment layer 10 is formed thereon. The resulting structures were cut in the form of tongues and tongues to prepare symmetrically structured wood floors with layers of carbonized solid wood.

[0044] As the carbonized solid wood layer 20 applied on the top and bottom layers of the base layer, a wood layer with a thickness of about 3.0mm and a moisture content of 5-7% is used, which is heat-treated at a temperature of 180-200°C. As the base layer 30, a Finnish Birch plywood having a thickness of 4.0 mm and a moisture content of 5% was used. As an adhesive, an aqueous emulsion containing vinyl urethane as a main component was mixed with 10% of a curing agent. Both room temperature compressible and room temperature curing resins are used.

[0045] Hereinafter, the manufacturing metho...

Embodiment 2

[0048] A wooden floor was prepared in the same manner as in Example 1 except that a core board composed of Burmese teak was stacked on the base layer 30 of Example 1.

experiment Embodiment 1

[0054] The physical properties of a wood floor having a symmetrical structure by applying a carbonized solid wood layer to the top and bottom of a base layer prepared in Examples of the present invention were compared with a non-heat-treated wood floor and a conventional commercially available wood floor having the same structure. The results thus obtained are given in Table 1 below. It could be confirmed that the wooden floor prepared in Example 1 showed superior dimensional stability and warping resistance compared to the wooden floor of Comparative Examples 1 and 2.

[0055] For the tests performed under high temperature conditions, the product samples were dried in a dryer at 80°C for 6 hours. For the soak treatment test, the samples were immersed in room temperature water for 6 hours. Then, the sample size and the degree of warpage in the width and length directions were measured using a caliper and a thickness gauge, respectively.

[0056] [Table 1]

[0057]

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Abstract

Provided is wood flooring having a symmetric structure comprising application of carbonized solid wood to top and bottom layers and a process for preparing the same. The wood flooring of the present invention has a symmetric structure by symmetric lamination of high-temperature heat-treated veneers having a thickness of more than 2 mm on top and bottom layers and integration of the layers under given temperature and pressure conditions. Therefore, the wood flooring is capable of maintaining the balance, is capable of completely solving a problem of deformation due to environmental fluctuations, is capable of achieving dimensional stability and high-quality color of product, and is capable of removing surface contamination, thus making it possible to use contaminated lower-grade coniferous lumber as a wood flooring material.

Description

technical field [0001] The present invention relates to a wooden floor with a symmetrical structure comprising the application of carbonized solid wood to the top and bottom layers and to a method for its preparation. More specifically, the present invention relates to a wooden floor with a symmetrical structure that can maintain balance and thoroughly solve the problem of deformation caused by adaptation to environmental changes by symmetrically laminating high-temperature heat-treated sheets with a thickness of 2 mm or more on both sides of the base layer. Background technique [0002] Typically, wood floors with a top layer thickness of less than 2mm are designed for underfloor heat supply, while wood floors with a top layer thickness of more than 2mm are designed for general use in solid wood floors. Conventional solid wood flooring consists of surface wood with a thickness of more than 2mm and plywood or sheet with a thickness of 5-7mm as a base material. According to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04F15/04
CPCB32B21/14E04F15/02E04F15/04
Inventor 姜锡求金智雄李圣揆
Owner LG CHEM LTD
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