CN102514057A - Method for making non-formaldehyde laminated veneer lumber from gum wood - Google Patents

Method for making non-formaldehyde laminated veneer lumber from gum wood Download PDF

Info

Publication number
CN102514057A
CN102514057A CN2012100046612A CN201210004661A CN102514057A CN 102514057 A CN102514057 A CN 102514057A CN 2012100046612 A CN2012100046612 A CN 2012100046612A CN 201210004661 A CN201210004661 A CN 201210004661A CN 102514057 A CN102514057 A CN 102514057A
Authority
CN
China
Prior art keywords
veneer
eucalyptus
assembly
laminated veneer
lumber
Prior art date
Application number
CN2012100046612A
Other languages
Chinese (zh)
Inventor
顾水祥
庞小仁
吴惠峰
吕华
Original Assignee
浙江升华云峰新材股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江升华云峰新材股份有限公司 filed Critical 浙江升华云峰新材股份有限公司
Priority to CN2012100046612A priority Critical patent/CN102514057A/en
Publication of CN102514057A publication Critical patent/CN102514057A/en

Links

Abstract

The invention discloses a method for making a non-formaldehyde laminated veneer lumber from gum wood. The invention solves the problems of deformation and warpage which are easy to generate when the laminated veneer lumber is made from the gum wood mainly by carrying out drying, softening and assembling treatment on the gum wood and carrying out softening treatment on a gum wood veneer through a scientific and reasonable assembling mode, so that the laminated veneer lumber made from the gum wood has a stable structure and is difficult to warp. Not only can the construction of artificial forest be promoted, but also the wood product with high value can be provided for the society, the problem of reasonably and efficiently utilizing the small diameter-class gum wood in the artificial forest is solved, and the method has great significance under the current situations of shortage of wood resources and supply and demand contradiction.

Description

A kind of method of not having the aldehyde laminated veneer lumber with the Eucalyptus manufacturing
Technical field
The present invention relates to a kind of production method of timber industry wood-based plate, particularly a kind of method of not having the aldehyde laminated veneer lumber with the Eucalyptus manufacturing.
Background technology
Laminated veneer lumber is a veneer with the rift grain direction is the sheet material that main assembly gummed forms, and has not only kept the natural characteristic of timber, also has the unexistent characteristics of many solid wood sawn timbers, and its rift grain MOR and elastic modelling quantity are all far above common glued board.It is extensive in China's cultivated area that speed is given birth to Eucalyptus; As the superior seeds of artificial fast-growing andhigh-yeilding trees at home proportion increase year by year; The Eucalyptus fiber is short, the timber internal density is inhomogeneous but speed is given birth to; With it is the laminated veneer lumber that raw material is made, and buckling deformation takes place extremely easily, thereby in the production application of reality, be not used for the manufacturing of laminated veneer lumber separately.But if can use the Eucalyptus fast growing wood to produce laminated veneer lumber; Not only can promote the construction of artificial forest; And can be the timber product that society provides higher use value; Solve artificial forest small diameter grade Eucalyptus and rationally efficiently utilize problem, under the situation that this is in short supply at current timber resources, imbalance between supply and demand is severe day by day, have very important significance.
The most common laminated veneer lumber is made for board using poplar board mostly in the market, and also useful China fir is made.Yet the density and hardness of poplar, China fir is all not as good as Eucalyptus, thus adopt the Eucalyptus veneer to make that laminated veneer lumber can be superior to poplar on physical and mechanical property, China fir is made, and poplar, China fir do not have advantage yet on price, cost.But because the shortcoming of the material of Eucalyptus own, the laminated veneer lumber of production has bigger buckling deformation, all some problems can occur in the application facet of following process and sheet material.Do not produce laminated veneer lumber so in reality is produced, generally do not adopt Eucalyptus.
Summary of the invention
The present invention has overcome the deficiency that exists in the above-mentioned prior art; What a kind of technology advantages of simple was provided does not have the method for aldehyde laminated veneer lumber with the Eucalyptus manufacturing; The present invention handles through the Eucalyptus veneer being carried out softening, has discharged the inherent strain of Eucalyptus veneer basically, simultaneously through scientific and reasonable assemble pattern; Solution is made laminated veneer lumber with Eucalyptus and is occurred the buckling deformation problem easily; And adhesive adopts the timber of formaldehydeless base to use the composite modified starch adhesive, makes the formaldehydeless release of Eucalyptus laminated veneer lumber, becomes environmentally friendly product.
Technical scheme of the present invention is achieved in that
A kind of do not have the method for aldehyde laminated veneer lumber with the Eucalyptus manufacturing, comprises following operation:
1., with middle small diameter grade Eucalyptus log through rotary-cut, cut that to process thickness be that 1.5mm~3.0mm, length are that 800~1400mm, width are the Eucalyptus veneer of 320mm~640mm; 2., the Eucalyptus veneer is dried in dryer, the veneer moisture content is controlled at below 12%; 3., place hot press to carry out softening veneer and handle, temperature is 100~135 ℃, and pressure is 0.8mpa~1mpa, and the time is 1~2min; 4., with the veneer after the softening processing, use starch adhesive, carry out cloth glue at cloth glue machine, cloth glue amount is controlled at two-sided 300~320g/ square metre; 5., assembly: with the Eucalyptus veneer of the good glue of cloth, with 5~10 layers be one group, it is the slab of 12mm~24mm that assembly becomes thickness; 6., the sheet material that assembly is good carries out precompressed, and preload pressure is 0.8mpa~1.0mpa, squeeze time 1.5h~2h; 7., after precompressed, slab is carried out hot pressing, heat pressing process is: pressure is 1.2MPa, 120 ℃ of temperature, time 30min; 8.,, after 5 days health, carry out sawing, promptly obtain the laminated veneer lumber that thickness is 17mm through sanding again according to desired book size with the sheet material after the hot pressing.
As preferably; In the assembly operation; Be that band is arranged along the veneer length direction with the second layer and layer second from the bottom in every group of veneer, other layer is perpendicular line and arranges and carry out assembly, splices and joint between adjacent two layers intersects and staggers along the veneer width.
As preferably, in the assembly operation, the grain direction of all veneers is perpendicular line and arranges along its length.
Adopted the invention has the beneficial effects as follows of technique scheme:
The present invention passes through to the processing of Eucalyptus tenderizing veneer sheets and through scientific and reasonable assemble pattern; When having solved Eucalyptus manufacturing laminated veneer lumber, the laminated veneer lumber that makes the Eucalyptus manufacturing problem of distortion and warpage appears easily; Stability Analysis of Structures is difficult for warpage; Not only can promote the construction of artificial forest, and can be the timber product that society provides higher use value, solve artificial forest small diameter grade Eucalyptus and rationally efficiently utilize problem; This is in short supply at current timber resources, under the situation of imbalance between supply and demand, important meaning is arranged.Simultaneously, adhesive adopts the composite modified starch adhesive of no aldehyde, makes production environment and environment for use all obtain protection, is perplexed by " formaldehyde " never again, has promoted the sustainable development of industry, has realized favorable economic benefit and social benefit.
Description of drawings
Fig. 1 is the assembly structural representation of Eucalyptus veneer in the embodiment of the invention 1;
Fig. 2 is the assembly structural representation of Eucalyptus veneer among the embodiment 2.
The specific embodiment
The specific embodiment of the present invention is following:
Embodiment 1: a kind of do not have the method for aldehyde laminated veneer lumber with the Eucalyptus manufacturing, comprises following operation:
1., with middle small diameter grade Eucalyptus log through rotary-cut, cut that to process thickness be that 2.4mm, length are that 1270mm, width are the Eucalyptus veneer of 320mm or 640mm;
2., the Eucalyptus veneer is dried in dryer, the veneer moisture content is controlled at below 12%;
3., place hot press to carry out softening veneer and handle, temperature is 110 ℃, and pressure is 0.8mpa, and the time is 2min;
4., with the veneer after the softening processing, use starch adhesive, carry out cloth glue at cloth glue machine, cloth glue amount is controlled at two-sided 300g/ square metre; The proportioning of starch adhesive and be prepared in the patent No. and be: record to some extent in the patent document of CN201010171082.8.
5., assembly: with the Eucalyptus veneer of the good glue of cloth, be one group with 8 layers, as shown in Figure 1, the grain direction of all veneers is perpendicular line and arranges along its length, and it is the slab of 12mm~24mm that assembly becomes thickness;
6., the sheet material that assembly is good carries out precompressed, and preload pressure is 0.8mpa~1.0mpa, squeeze time 1.5h;
7., after precompressed, slab is carried out hot pressing, heat pressing process is: pressure is 1.2MPa, 120 ℃ of temperature, time 30min;
8.,, after 5 days health, carry out sawing, promptly obtain the laminated veneer lumber that thickness is 17mm through sanding again according to desired book size with the sheet material after the hot pressing.
Embodiment 2: a kind of do not have the method for aldehyde laminated veneer lumber with the Eucalyptus manufacturing, comprises following operation:
1., with middle small diameter grade Eucalyptus log through rotary-cut, cut that to process thickness be that 3.0mm, length are that 1300mm, width are the Eucalyptus veneer of 320mm or 640mm;
2., the Eucalyptus veneer is dried in dryer, the veneer moisture content is controlled at below 12%;
3., place hot press to carry out softening veneer and handle, temperature is 125 ℃, and pressure is 1mpa, and the time is 1min;
4., with the veneer after the softening processing, use starch adhesive, carry out cloth glue at cloth glue machine, cloth glue amount is controlled at two-sided 320g/ square metre; The proportioning of starch adhesive and be prepared in the patent No. and be: record to some extent in the patent document of CN201010171082.8.
5.; Assembly: with the Eucalyptus veneer of the good glue of cloth, be one group with 8 layers, as shown in Figure 2; Be that band is arranged along the veneer length direction with the second layer and layer second from the bottom in every group of veneer; Other layer is perpendicular line and arranges and carry out assembly, splices and joint between adjacent two layers intersects and staggers along the veneer width, and it is the slab of 12mm~24mm that assembly becomes thickness;
6., the sheet material that assembly is good carries out precompressed, and preload pressure is 1.0mpa, squeeze time 1.5h;
7., after precompressed, slab is carried out hot pressing, heat pressing process is: pressure is 1.2MPa, 120 ℃ of temperature, time 30min;
8.,, after 5 days health, carry out sawing, promptly obtain the laminated veneer lumber that thickness is 17mm through sanding again according to desired book size with the sheet material after the hot pressing.
The laminated veneer lumber that obtains is pressed GB/T20241 " laminated veneer lumber ", the detection of LY/T 1738-2008 " solid wooden compound floor is used base material " standard-required, and its result is:
MOR: 55.68MPa
Elastic modelling quantity: 5941.53MPa
Angularity: 0.12%
Burst size of methanal: 0.02mg/l
Dipping disbonded test: qualified
The resulting Eucalyptus laminated veneer lumber of above instance all meets the requirements of the standard.

Claims (3)

1. one kind is not had the method for aldehyde laminated veneer lumber with the Eucalyptus manufacturing, it is characterized in that:
1., with middle small diameter grade Eucalyptus log through rotary-cut, cut that to process thickness be that 1.5mm~3.0mm, length are that 800~1400mm, width are the Eucalyptus veneer of 320mm~640mm;
2., the Eucalyptus veneer is dried in dryer, the veneer moisture content is controlled at below 12%;
3., place hot press to carry out softening veneer and handle, temperature is 100~135 ℃, and pressure is 0.8mpa~1mpa, and the time is 1~2min;
4., with the veneer after the softening processing, use starch adhesive, carry out cloth glue at cloth glue machine, cloth glue amount is controlled at two-sided 300~320g/ square metre;
5., assembly: with the Eucalyptus veneer of the good glue of cloth, with 5~10 layers be one group, it is the slab of 12mm~24mm that assembly becomes thickness;
6., the sheet material that assembly is good carries out precompressed, and preload pressure is 0.8mpa~1.0mpa, squeeze time 1.5h~2h;
7., after precompressed, slab is carried out hot pressing, heat pressing process is: pressure is 1.2MPa, 120 ℃ of temperature, time 30min;
8.,, after 5 days health, carry out sawing, promptly obtain the laminated veneer lumber that thickness is 17mm through sanding again according to desired book size with the sheet material after the hot pressing.
2. a kind of method of not having the aldehyde laminated veneer lumber with the Eucalyptus manufacturing according to claim 1; It is characterized in that: in the assembly operation; Be that band is arranged along the veneer length direction with the second layer and layer second from the bottom in every group of veneer; Other layer is perpendicular line and arranges and carry out assembly, splices and joint between adjacent two layers intersects and staggers along the veneer width.
3. according to claim 1 a kind ofly do not have the method for aldehyde laminated veneer lumber with the Eucalyptus manufacturing, it is characterized in that: in the assembly operation, the grain direction of all veneers is perpendicular line and arranges along its length.
CN2012100046612A 2012-01-09 2012-01-09 Method for making non-formaldehyde laminated veneer lumber from gum wood CN102514057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012100046612A CN102514057A (en) 2012-01-09 2012-01-09 Method for making non-formaldehyde laminated veneer lumber from gum wood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012100046612A CN102514057A (en) 2012-01-09 2012-01-09 Method for making non-formaldehyde laminated veneer lumber from gum wood

Publications (1)

Publication Number Publication Date
CN102514057A true CN102514057A (en) 2012-06-27

Family

ID=46285260

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012100046612A CN102514057A (en) 2012-01-09 2012-01-09 Method for making non-formaldehyde laminated veneer lumber from gum wood

Country Status (1)

Country Link
CN (1) CN102514057A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104924373A (en) * 2015-06-12 2015-09-23 柳州市骏马木业有限公司 Preparation method of environmentally-friendly high-performance eucalyptus plywood
CN104942906A (en) * 2015-06-12 2015-09-30 柳州市骏马木业有限公司 Method for processing environment-friendly high-performance eucalyptus plywood
CN104942905A (en) * 2015-06-12 2015-09-30 柳州市骏马木业有限公司 Method for manufacturing environment-friendly high-performance eucalyptus plywood
CN104942909A (en) * 2015-06-12 2015-09-30 柳州市骏马木业有限公司 Method for manufacturing environment-friendly eucalyptus plywood
CN104960042A (en) * 2015-06-12 2015-10-07 柳州市骏马木业有限公司 Method for producing high-performance environment-friendly eucalyptus plywood
CN105108839A (en) * 2015-09-08 2015-12-02 河北北方绿野居住环境发展有限公司 Wood composite board
CN105171853A (en) * 2015-06-12 2015-12-23 柳州市骏马木业有限公司 Production method for environmental-friendly high-performance eucalyptus plywood
CN105965617A (en) * 2016-05-23 2016-09-28 宁波中加低碳新技术研究院有限公司 Fabrication method for veneer based external wall panels
CN106013715A (en) * 2016-05-09 2016-10-12 南京林业大学 A composite floor board produced by using eucalypt wood laminated veneer lumber and a preparation process therefor
CN107088931A (en) * 2017-05-08 2017-08-25 贵港市鑫宏木业有限公司 The preparation method of insect prevention wood plywood
CN107097306A (en) * 2017-05-08 2017-08-29 贵港市鑫宏木业有限公司 A kind of preparation method of wardrobe wood plywood

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040170856A1 (en) * 2002-12-04 2004-09-02 Bill Arndell Laminated wood products and process for making the same
CA2195223C (en) * 1994-08-15 2005-10-18 David W. Park Wood veneers and products therefrom having enhanced strength and stiffness
CN1792584A (en) * 2005-11-08 2006-06-28 南京林业大学 Method for producing single plate laminated floor board by middle and small diameter grade rotation cutted wood material
CN101338172A (en) * 2008-08-08 2009-01-07 郭同虎 Aldehyde-free starch adhesive of plywood and method for preparing same
CN101947799A (en) * 2010-09-02 2011-01-19 南京林业大学 Production method of laminated veneer lumber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2195223C (en) * 1994-08-15 2005-10-18 David W. Park Wood veneers and products therefrom having enhanced strength and stiffness
US20040170856A1 (en) * 2002-12-04 2004-09-02 Bill Arndell Laminated wood products and process for making the same
CN1792584A (en) * 2005-11-08 2006-06-28 南京林业大学 Method for producing single plate laminated floor board by middle and small diameter grade rotation cutted wood material
CN101338172A (en) * 2008-08-08 2009-01-07 郭同虎 Aldehyde-free starch adhesive of plywood and method for preparing same
CN101947799A (en) * 2010-09-02 2011-01-19 南京林业大学 Production method of laminated veneer lumber

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
《林业科技开发》 20110725 罗建举等 桉木单板层积材生产工艺的优化 第25卷, 第4期 *
《第二届中国林业学术大会--S11 木材及生物质资源高效增值利用与木材安全论文集 》 20091107 李宁等 桉树单板层积材工艺试验研究 中国会议 , *
向仕龙等: "《木材加工与应用技术进展》", 30 September 2010, 科学出版社 *
徐信武等: "薄型单板层积材结构改进的研究", 《林业科技开发》 *
李宁等: "桉树单板层积材工艺试验研究", 《第二届中国林业学术大会——S11 木材及生物质资源高效增值利用与木材安全论文集 》 *
罗建举等: "桉木单板层积材生产工艺的优化", 《林业科技开发》 *
顾继友等: "《人造板生产技术与应用》", 31 July 2009, 化学工业出版社 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105171853A (en) * 2015-06-12 2015-12-23 柳州市骏马木业有限公司 Production method for environmental-friendly high-performance eucalyptus plywood
CN104942906A (en) * 2015-06-12 2015-09-30 柳州市骏马木业有限公司 Method for processing environment-friendly high-performance eucalyptus plywood
CN104942905A (en) * 2015-06-12 2015-09-30 柳州市骏马木业有限公司 Method for manufacturing environment-friendly high-performance eucalyptus plywood
CN104942909A (en) * 2015-06-12 2015-09-30 柳州市骏马木业有限公司 Method for manufacturing environment-friendly eucalyptus plywood
CN104960042A (en) * 2015-06-12 2015-10-07 柳州市骏马木业有限公司 Method for producing high-performance environment-friendly eucalyptus plywood
CN104924373A (en) * 2015-06-12 2015-09-23 柳州市骏马木业有限公司 Preparation method of environmentally-friendly high-performance eucalyptus plywood
CN105108839A (en) * 2015-09-08 2015-12-02 河北北方绿野居住环境发展有限公司 Wood composite board
CN105108839B (en) * 2015-09-08 2017-12-12 河北北方绿野居住环境发展有限公司 wood composite board
CN106013715A (en) * 2016-05-09 2016-10-12 南京林业大学 A composite floor board produced by using eucalypt wood laminated veneer lumber and a preparation process therefor
CN106013715B (en) * 2016-05-09 2019-09-20 南京林业大学 A kind of preparation process of the composite floor board of Eucalyptus laminated veneer lumber production
CN105965617A (en) * 2016-05-23 2016-09-28 宁波中加低碳新技术研究院有限公司 Fabrication method for veneer based external wall panels
CN107088931A (en) * 2017-05-08 2017-08-25 贵港市鑫宏木业有限公司 The preparation method of insect prevention wood plywood
CN107097306A (en) * 2017-05-08 2017-08-29 贵港市鑫宏木业有限公司 A kind of preparation method of wardrobe wood plywood

Similar Documents

Publication Publication Date Title
CN100486786C (en) Manufacturing method of wood/hybrid Chinese pennisetum composite artificial board
CN101058207B (en) Maize stalk and/or wheat stalk composite board and its manufacturing method
CN104626292A (en) Surface-decorated oriented strand board and preparation process thereof
CN201525061U (en) Composite plywood with surface layer of fiberboard or shaving board
CN101036994B (en) Laminated sheets of tabasheer core layer and the outer bamboo bottom layer and the processing method
CN103192442B (en) A kind of production method of medium density fibre board (MDF)
CN102371605B (en) Manufacturing method of I-shaped wood laminated veneer lumber (LVL)
CN106363714A (en) Method for producing environment-friendly particle board through continuous hot pressing of total eucalypt wood leftover material
CN103128811B (en) Production method of low-carbon environment-friendly anti-deformation solid wood composite plate
CN101670598B (en) Alpine ash wedge joint board and making method thereof
JP2011068015A (en) Plyboard, palm plyboard, method of manufacturing plywood, and method of manufacturing palm plyboard
CN100491086C (en) Container compound bottom board using chipboard as core material and its manufacturing method
CN102198684A (en) Oriented chipboard and processing technology
CN101298157B (en) High-hardness plate and manufacturing method thereof
CN101214677A (en) Method of preparing full bamboo or bamboo wood composite oriented structure shaving board
CN100496967C (en) Adhesive-bonded panel made of bamboo and wood and its production method
CN102514054B (en) Processing method for manufacturing laminated wood board core board from spruce branch tips and laminated wood board
CN100496910C (en) A process for manufacturing anti-crack bamboo plate
CN103737677B (en) A kind of utilize soybean protein glue to produce core-board and process
CN101342723B (en) Method for manufacturing sunflower artificial board of straw
CN102218758B (en) High-strength light plate material and manufacture method thereof
JPH08510416A (en) Method of manufacturing composite materials from renewable raw materials
CN100487218C (en) Four-layer solid wood composite floor with skin layer having horizontal-longitudinal split joint structure and method for making same
CN102069515A (en) Bamboo-wood composite plywood for container flooring and production method thereof
CN102398287A (en) Method for producing bamboo-wood composite board

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120627