Method for producing multi-layer solid-wood composite floor by densified poplar single board

A technology of solid wood composite flooring and poplar veneer, which is applied in the jointing of wooden veneers, other plywood/plywood appliances, wood processing appliances, etc., can solve the problems of dimensional instability and achieve low deformation rebound rate and low cost Low, good dimensional stability effect

Inactive Publication Date: 2011-09-14
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology uses normal pressure treatments for making pile vinyl plates easier to produce while also meeting safety regulations set by regulators or other organizations involved with protecting natural resources from pollution caused during manufacturing processes. It achieves this without adding extra steps like refrigeration or solvent evaporation that are expensive compared to traditional methods such as thermal curing at temperatures above 100°C.

Problems solved by technology

This patented describes how adding reinforce agents (representatives) or modifying techniques like resins imprint lumber board may help prevent shrinking over time when exposed to harsh environments such as rainwater. Additionally, this improvement involves enhancing fire resistance by treating the panels at higher temperatures before they reach their final destination.

Method used

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  • Method for producing multi-layer solid-wood composite floor by densified poplar single board
  • Method for producing multi-layer solid-wood composite floor by densified poplar single board
  • Method for producing multi-layer solid-wood composite floor by densified poplar single board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] ①Panel preparation: select air-dried rotary-cut poplar veneer with a size of 400×500×1.9mm; adjust the moisture content of the veneer to 13% before pressing, and place it in a hot press at a temperature of 140°C for compression. 6MPa, the pressurization time is 10min, and the thickness after pressing is 0.8mm; the compacted veneer is placed in a blast drying oven for heat treatment, the heat treatment temperature is 205°C, and the time is 40min; Residual Stress;

[0019] ②Preparation of base material: Use rotary-cut poplar veneer with a thickness of 1.5mm and a moisture content of 8.6%. The thickness of the substrate is 10mm;

[0020] ③Manufacturing of multi-layer solid wood composite flooring: the panel is compacted and heat-treated 0.8mm thick poplar veneer, with a moisture content of 5.6%. 2 , pressure 1.8MPa, temperature 30°C, time 60min;

[0021] ④Through longitudinal sawing, longitudinal and transverse tenon and tenon groove processing;

[0022] ⑤ Sanding and ...

Embodiment 2

[0027] ① Panel preparation: select air-dried rotary-cut poplar veneer, the size specification is 1200×600×2.2mm; adjust the moisture content of the veneer to 15% before pressing; place the veneer in a hot press machine, and the hot pressing temperature is 130°C , the pressure is 8MPa, the time is 8min, the single thickness is 1mm after compaction, and the compression rate of the veneer is 54%; the compacted veneer is placed in the drying equipment for heat treatment, the heat treatment temperature is 210°C, and the time is 30min; the densified poplar The veneer is kept healthy for a week to release its internal residual stress;

[0028] ②Preparation of base material: Use rotary-cut poplar veneer, the thickness of the veneer is 1.8mm, and the moisture content is 8.4%. The substrate thickness is 14mm;

[0029] ③Manufacture of multi-layer solid wood composite flooring: After compaction and heat treatment, poplar veneer with a thickness of 1mm is used as the panel, the moisture c...

Embodiment 3

[0038] ①Panel preparation: Air-dried and rotary-cut poplar veneer, the size of the veneer is 1400×700×2.4mm; adjust the moisture content of the veneer to 18%; place the veneer in a hot press, and heat The pressing temperature is 120°C, the pressure is 7MPa, the time is 12min, and the thickness of the veneer after compaction is 1.3mm; the compacted veneer is placed in a drying equipment for heat treatment, the temperature is 220°C, and the time is 20min; the densified poplar veneer Keeping in good health for a week to release its internal residual stress;

[0039] ②Preparation of base material: Use rotary-cut poplar veneer with a thickness of 2.2mm and a moisture content of 8.2%. The wood fibers of adjacent layers of wood are perpendicular to each other;

[0040] ③Manufacturing of multi-layer solid wood composite flooring: the panel is made of 1.3mm thick poplar veneer that has been compacted and high-temperature heat-treated, with a moisture content of 5.6%, and is veneered w...

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Abstract

The invention relates to the field of wood processing, in particular to a method for producing a solid-wood composite floor by using a fast-growing wood poplar rotary-cut single board which is subjected to densification and high-temperature heat treatment as a panel. The method comprises the following steps of: placing the rotary-cut poplar single board in a hot press for hot pressing; placing a densified poplar single board in drying equipment for the high-temperature heat treatment so as to achieve size stability; and preparing a solid-wood composite floor base material by using the rotary-cut single board, carrying out processes of sawing, rip sawing, processing of longitudinal and horizontal mortises, sanding and painting on the poplar single board which is subjected to the densification and the high-temperature heat treatment and used as the panel, and producing a densified multi-layer solid-wood composite floor. By the invention, the defects of poor size stability and low performance of the poplar single board are overcome; the method for producing the multi-layer solid-wood composite floor by using the densified poplar single board as the panel has the advantages of no addition of any chemical reagent in production process, no pollution, environment friendliness, simple process and low cost; and the physicochemical performance of a product can meet national standard requirements for the solid-wood composite floor.

Description

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Claims

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Application Information

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Owner NANJING FORESTRY UNIV
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