Method for manufacturing bamboo strengthened poplar laminated veneer lumber

A technology of poplar veneer and manufacturing method, which is applied in the jointing of wooden veneers, wood layered products, manufacturing tools, etc., can solve the problems of poor flame retardancy, uneven distribution, and irregular dry shape, and achieve Significant economic benefits, improved flame retardant performance, and reduced emissions

Inactive Publication Date: 2013-04-10
郑州兴旺木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, poplar wood in plantation forests has low density, soft material, light color, high moisture content and uneven distribution, and often has material defects such as irregular dry shape, many knots, black hearts, and insect eyes, which directly affect the quality of poplar trees in plantation forests. and price
In recent years, the produc

Method used

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  • Method for manufacturing bamboo strengthened poplar laminated veneer lumber

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] A manufacturing method of bamboo reinforced poplar laminated veneer lumber includes the following steps:

[0029] (1) Poplar veneer cutting: Rotary cutting of poplar wood to obtain 3mm veneer, and sawing and cutting into size as required;

[0030] (2) Poplar veneer mitre joint: bevel the edges of the web that need to be butted, so that the angle between the bevel and the web surface is 20°, then apply glue to the bevel, and perform 220 Heating at ℃ for 25 seconds, the veneer must be mitered;

[0031] (3) Surface layer mitered veneer impregnation: the mitre veneer that needs to be installed on the surface of the laminated lumber is treated with water-based SiO 2 Sol vacuum impregnation, the impregnation time is 2 hours, the impregnation temperature is 25°C; the vacuum impregnation design pressure is 0.5MPa, the vacuum time is 28min, and the vacuum degree is 0.08MPa;

[0032] (4) Bamboo curtain impregnation: The bamboo curtains arranged in the forward direction...

Example Embodiment

[0036] Example 2

[0037] A manufacturing method of bamboo reinforced poplar laminated veneer lumber includes the following steps:

[0038] (1) Poplar veneer cutting: Rotate the poplar wood to obtain a 1mm veneer, and cut it into a format as required;

[0039] (2) Poplar veneer mitre joint: bevel the edges of the web that need to be butted, and grind the angle between the bevel and the web surface to be 10°, then apply glue to the bevel and perform 250 Heating at ℃ for 30 seconds, the veneer must be mitered;

[0040] (3) Surface layer mitered veneer impregnation: the mitre veneer that needs to be installed on the surface of the laminated lumber is made of water 2 Sol vacuum impregnation, the impregnation time is 4 hours, the impregnation temperature is 30°C; the vacuum impregnation design pressure is 0.3MPa, the vacuum time is 25min, and the vacuum degree is 0.1MPa;

[0041] (4) Bamboo raft impregnation: The bamboo raft is vacuum impregnated in a phenolic resin with a solid content o...

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Abstract

The invention belongs to the field of processing woods, and particularly relates to a method for manufacturing a bamboo strengthened poplar laminated veneer lumber. The manufacturing method comprises the following steps of: cutting the poplar veneer, scarfing the veneer, dipping the scarfed veneer, dipping a bamboo layer, drying, hot pressing, decorating a laminated timber and the like. The method is reasonable in design and simple in technology; the poplar with small diameter class is used as raw material for producing the laminated veneer lumber; the bamboo material with the same direction with fiber and high strength is introduced; the surface veneer is subjected to aqueous SiO2 (silicon dioxide) sol impregnation strengthened treatment, so that the shortcomings of the quality and the processing of the poplar are conquered, the existing resource is effectively used; the small woods and inferior woods can be better used; the outturn percentage is high; and the economic effect is obvious. The obtained laminated timber is high in strength, excellent in stability, free of cracking and deforming, high-temperature resistant and excellent in flame retardation. The obtained laminated timber can be used for indoor floorboard and decorating and refurbishing materials; the formaldehyde emission is far less than the home and aboard emission standard; and environment-friendly requirements can be achieved.

Description

technical field [0001] The invention belongs to the field of wood processing, and in particular relates to a method for manufacturing bamboo-reinforced poplar veneer laminated lumber. Background technique [0002] With the great changes in the world's forest resource structure, high-quality timber resources are becoming more and more scarce, while people's demand for wood products and ecological environment requirements are constantly increasing, resulting in increasingly obvious contradictions between supply and demand of wood materials. my country is a country lacking forests and less forests, and there is a large gap in wood. With the reduction of large-diameter wood and the improvement of wood performance requirements, the natural characteristics of original wood are difficult to meet the demand. A large number of logs and plywood are imported from abroad every year. Spend a lot of foreign exchange. [0003] Laminated veneer lumber (LVL) is a new type of man-made lumber ...

Claims

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Application Information

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IPC IPC(8): B27D1/08B27D1/10B27K3/02B27K3/38B27K3/16B32B21/13
Inventor 刘治军李超凡
Owner 郑州兴旺木业有限公司
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