Apparatus for modifying hygroscopic materials

The thermomechanical wood modification process addresses energy-intensive and wasteful impregnation methods by heating and treating wood with fluid agents, improving wood properties and reducing environmental impact.

JP7864724B2Active Publication Date: 2026-05-25AVANT WOOD OY
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Patent Information

Application Number
JP2023549598
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-02-15
Filing Date
2022-02-09
Publication Date
2026-05-25
Estimated Expiration
2042-02-09

AI Technical Summary

Technical Problem

Conventional wood impregnation methods require significant energy and generate CO2 emissions due to the need for vacuum and pressure, and they often result in wood waste and inefficiencies.

Method used

A thermomechanical wood modification process that heats hygroscopic materials to extract moisture, then introduces a fluid containing treatment agents like preservatives or dyes, without mechanical pressure, optimizing energy use and reducing waste.

Benefits of technology

The process enhances wood properties such as strength, hardness, and dimensional stability while being energy-efficient and environmentally friendly, allowing for customized wood products with reduced energy consumption and emissions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to thermal or thermo-mechanical treatment of hygroscopic materials to adjust material properties. The present invention relates to an apparatus for modifying hygroscopic materials. The modification apparatus comprises a modification unit (202) and a fluid container (204) coupled to at least one fluid opening (203) via a control valve (205). The modification apparatus is configured to heat the hygroscopic material in the modification unit (202) to extract water from the hygroscopic material and to direct the fluid from the fluid container through the at least one fluid opening (203) into the modification unit (202) in response to opening of the control valve (205). The modification apparatus further comprises a treatment agent (207) that is added to the fluid, such that the treatment agent is absorbed into the hygroscopic material and modifies it. The treatment agent (207) comprises at least one of the following components: preservatives, dyes, pigments, fragrances, deodorants, insecticides, impregnation components, or flame retardants.
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Citation Information

Patent Citations

  • Improve equipment of timber thermal treatment speed

    CN207495707U

  • Method and apparatus for toning wood

    JP1995060711A

  • Chemical processing apparatus

    JP2000130937A

  • Method and apparatus for shape-fixing treatment for building wood

    JP2001212809A

  • Method and apparatus for manufacturing building material and wood formed product wherein wood such as domestic timber, japanese cedar, pine, thinnings and the like is used as raw material

    JP2001310306A