CN102179854A - Method for producing multi-layer solid-wood composite floor by densified poplar single board - Google Patents
Method for producing multi-layer solid-wood composite floor by densified poplar single board Download PDFInfo
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- CN102179854A CN102179854A CN2011101593744A CN201110159374A CN102179854A CN 102179854 A CN102179854 A CN 102179854A CN 2011101593744 A CN2011101593744 A CN 2011101593744A CN 201110159374 A CN201110159374 A CN 201110159374A CN 102179854 A CN102179854 A CN 102179854A
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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
One, technical field
The invention discloses a kind of method of utilizing the fast growing wood board using poplar board to produce multi-layer solid wood composite floor.The rotary-cut board using poplar board is handled through the modification of densificationization, high-temperature heat treatment, its density, dimensional stability and intensity are improved, utilize rotary cut venner to prepare the solid wooden compound floor base material, the board using poplar board of densification is as panel, jagsaw cuts, explained hereafter multi-layer solid wood composite floors such as vertical, horizontal tongue-and-groove processing, sanding and paint.Its major technique is characterized as: utilize veneer through densificationization and high-temperature heat treatment as panel, produce and satisfy the multi-layer solid wood composite floor that national standard requires.
Two, background technology
The minimizing gradually of global wildwood resource and various countries make the artificial forest wood utilization become the important channel that solves current ever-increasing timber demand and relative inadequacy of resources contradiction to the pay attention to day by day of ecological environmental protection.But the fast growing wood material is soft, intensity is low, poor stability, has limited its purposes.Willow Poplar is China's artificial forest chief species, accounts for the proportion maximum of fast-growing, high-yield woods, have a very wide distribution, wide in variety, growth cycle is short, but low, the intensity difference of cottonwood plank stuff density in order to enlarge the application of poplar, must improve its physico-mechanical properties.
At present, fast growing wood is strengthened modification and is handled and mainly contain resin and impregnate method and densificationization.Resin infusion process chemical cost height, the technological operation complexity, and big to the influence of wood color and wood property, and the densification treating apparatus is simple, and easy operating is with low cost, the densification material compliance with environmental protection requirements that processes is so densificationization is the focus of Wooden modifying research in recent years.But resilience takes place owing to internal stress can make it down hydrothermal in the sheet material of densificationization, causes the size instability.Discover that high-temperature heat treatment is effectively to improve wood dimensional stability, durability and color, promote a modification technology of timber added value.Heat treatment is that sheet material is placed physical modification and the resist technology that carries out the short-term pyrolysis under the environment of high temperature.Do not add any chemical reagent in the heat treatment process, pollution-free problem, technology is simple, and the sheet material after handling has favorable durability and dimensional stability, compliance with environmental protection requirements.
At the ground board industry, the poplar of non-modified is owing to the application of reasons such as material is less, and only sandwich layer and the bottom at composite floor board has some application.And in recent years, along with the development of timber reinforcement technique, the application of poplar in solid wooden compound floor will get more and more.By research to the poplar densificationization, find that timber densification technology is that increase log processing and utilization scope and step-down matter material are a technological revolution of good material, it can make, and material is light and soft, density is lower, the timber of process industrial art performance difference is improving it by compression process aspect physics, the mechanical property, pass through high-temperature heat treatment, dimensional stability is improved, wood color improves, the grain of wood obtains clear highlighting, thereby enlarged the range of application of poplar fast growing wood, improved the utilization rate and the use value of timber.Utilize the densification board using poplar board can substitute natural rare tree and make the floor finishing material, have crucial meaning to saving the protection precious timber, board industry has broad application prospects on ground.
Three, summary of the invention
1. Fa Ming purpose
The objective of the invention is to utilize that material is soft, density is low, the board using poplar board of poor performance, pass through physical modification, its every performance is improved, and it is used for the production of solid wooden compound floor as panel, improve the added value of artificial forest wood, effectively enlarge its range of application, alleviate the situation of high-quality panel shortage in the solid wooden compound floor production.
2. technical scheme
The present invention relates to utilize the method for producing multi-layer solid wood composite floor through the board using poplar board of densificationization and high-temperature heat treatment, and its processing step is divided into:
1. the preparation of panel: the board using poplar board of peeler rotary-cut, do through gas, make the veneer that specification is 400～2200mm * 180～1220mm * 1.6～3.0mm; The adjusting moisture content is 10-18%, and to place hot pressing temperature be compression in 120-140 ℃ the hot press, and pressure is controlled at 5-10MPa, and be 6-12min pressing time, and the scope of veneer compression ratio is 30-65%; It is 205-220 ℃ of drying equipment high-temperature heat treatment 20-40min that the veneer of densificationization is placed temperature, eliminates the internal stress that veneer produces in the densification process; The board using poplar board of densification is deposited at normal temperatures, in resting period at least one week, is used for the panel that the floor produces after the release residual stress;
2. the preparation of base material: base material adopts rotary cut venner, and veneer thickness 1.2-3mm, moisture content are 7-12%, and rotary cut venner is made floor base material through gluing, assembly, hot pressing;
3. the manufacturing of multi-layer solid wood composite floor: as panel, plate thickness is 0.6-2.0mm through the board using poplar board of densificationization and high-temperature heat treatment, and moisture content is 4-7%, adopts the EPI adhesive, and panel double spread amount is 280-360g/m
2, moulding pressure 1-1.8MPa, pressed temperature 15-80 ℃, time 20-90min;
4. jagsaw cut, vertical deep-sawing, vertically, laterally tenon and tongue-and-groove processing;
5. make multi-layer solid wood composite floor through sanding and paint.
In the technical scheme, the rotary-cut board using poplar board is placed hot press, utilize the bullet of mechanism and timber to mould characteristic board using poplar board carry out densificationization, the material physical and mechanical property of the board using poplar board that makes is significantly improved, but the compression of short time can produce big internal stress, make the poor dimensional stability of densification material, in order to guarantee product quality, the densification material carries out high-temperature heat treatment after compression, discharges internal stress, reduce distortion, guarantee dimensional stability.
Advantage of the present invention: in the board using poplar board densification employing actual production than being easier to realize and the common compression of compliance with environmental protection requirements is handled, carrying out resilience by high-temperature heat treatment then fixes, the densification veneer deformation resilience rate that makes is low, dimensional stability good, function admirable, the method safety and environmental protection, simple, cost is lower.
Four, the specific embodiment
Describe the present invention below in conjunction with example, but given example is not limit in invention.
Embodiment 1:
1. panel preparation: select for use gas to do the rotary-cut board using poplar board, dimensions is 400 * 500 * 1.9mm; Moisture content to 13% before regulating veneer and pressing, and to place temperature be compression in 140 ℃ the hot press, pressure 6MPa, be 10min pressing time, presses the thick 0.8mm in back; The veneer of densificationization is placed air dry oven heat treatment, 205 ℃ of heat treatment temperatures, time 40min; With one week of densification board using poplar board health, discharge its residual stress;
2. the preparation of base material: adopt the rotary-cut board using poplar board, veneer thickness 1.5mm, moisture content are 8.6%, and the rotary-cut board using poplar board is made floor base material through gluing, assembly, hot pressing, and the base material thickness of making is 10mm;
3. multi-layer solid wood composite floor manufacturing: panel is densificationization and the thick board using poplar board of heat treated 0.8mm, and moisture content is 5.6%, adopts EPI adhesive veneer, panel double spread amount 300g/m
2, pressure 1.8MPa, 30 ℃ of temperature, time 60min;
4. through vertical deep-sawing, vertical, horizontal tenon and tongue-and-groove are processed;
5. make full poplar multi-layer solid wood composite floor through sanding and paint.
Performance indications are as follows:
Embodiment 2:
1. panel preparation: select for use gas to do the rotary-cut board using poplar board, dimensions is 1200 * 600 * 2.2mm; Regulate veneer and press preceding moisture content to 15%; Veneer is placed in the hot press, 130 ℃ of hot pressing temperatures, pressure 8MPa, the time is 8min, single thick 1mm after the densification, the veneer compression ratio reaches 54%; The veneer of densificationization is placed drying equipment heat treatment, 210 ℃ of heat treatment temperatures, time 30min; With one week of densification board using poplar board health, discharge its internal residual stress;
2. the preparation of base material: adopt the rotary-cut board using poplar board, veneer thickness 1.8mm, moisture content are 8.4%, and the rotary-cut board using poplar board is made floor base material through gluing, assembly, hot pressing, and the base material thickness of making is 14mm;
3. multi-layer solid wood composite floor manufacturing: through densificationization and heat treatment, thickness be the 1mm board using poplar board as panel, veneer is moisture to be 5.6%, adopts EPI adhesive veneer, panel double spread amount 340g/m
2, press 1.6MPa, 20 ℃ of temperature, time 70min;
4. jagsaw cuts, vertical, laterally tenon and tongue-and-groove processing;
5. make full poplar multi-layer solid wood composite floor through sanding and paint.
Performance indications are as follows:
Moisture content: 8.4% dipping is peeled off: do not have and come unglued
MOR: 69.3MPa elastic modelling quantity: 6735.4MPa
Paint film adhesion: 95% above surface abrasion resistance: 0.10g/100r
Embodiment 3:
1. panel preparation: gas is done the rotary-cut board using poplar board, and the dimensions of veneer is 1400 * 700 * 2.4mm; Regulate veneer moisture content to 18%; Veneer is placed in the hot press, 120 ℃ of the hot pressing temperatures during hot pressing, pressure 7MPa, time 12min, the thickness of veneer is 1.3mm after the densification; The veneer of densificationization is placed drying equipment heat treatment, 220 ℃ of temperature, time 20min; With one week of densification board using poplar board health, discharge its internal residual stress;
2. the preparation of base material: adopt the rotary-cut board using poplar board, veneer thickness 2.2mm, moisture content are 8.2%, and the rotary-cut board using poplar board is made floor base material through glue, assembly, hot pressing, and base material adjacent layer lumber fibre is vertical mutually during assembly;
3. multi-layer solid wood composite floor manufacturing: panel adopts through the thick board using poplar board of the 1.3mm of densificationization and high-temperature heat treatment, and moisture content is 5.6%, adopts EPI adhesive veneer, panel double spread amount 350g/m
2, pressure 1.5MPa, 45 ℃ of temperature, time 50min;
4. through vertical deep-sawing; Vertically, laterally tenon and tongue-and-groove processing;
5. make full poplar multi-layer solid wood composite floor through sanding and paint.
Performance indications are as follows:
Embodiment 4:
1. panel preparation: the dimensions that gas is done the rotary-cut board using poplar board is 1600 * 800 * 2.8mm; Regulate the moisture content to 11% of veneer; It is in 140 ℃ the hot press that veneer is placed temperature, pressure 6MPa, and the time is 10min, presses the thick 1.8mm in back, the veneer compression ratio reaches 36%; The veneer of densificationization is placed drying equipment heat treatment, 215 ℃ of temperature, time 25min; With densification board using poplar board health 10 days, discharge its internal residual stress;
2. the preparation of base material: the thickness 2.6mm of rotary-cut board using poplar board, moisture content are 8.6%, and veneer is made floor base material through gluing, assembly, hot pressing; Adopt the urea-formaldehyde resin adhesive of melamine modification, veneer double spread amount is 340g/m
2
3. multi-layer solid wood composite floor manufacturing: panel is the densification board using poplar board, and moisture content is 4.6%, adopts the EPI adhesive, panel double spread amount 360g/m
2, pressure 1.3MPa, 40 ℃ of temperature, time 60min;
4. jagsaw cut, vertical deep-sawing, vertically, laterally tenon and tongue-and-groove processing;
5. make full poplar multi-layer solid wood composite floor through sanding and paint.
Performance indications are as follows:
Moisture content: 8.7% dipping is peeled off: do not have and come unglued
MOR: 63.9MPa elastic modelling quantity: 6331.6MPa
Paint film adhesion: 95% above surface abrasion resistance: 0.10g/100r
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, and all sieve is at the protection domain of the present invention's requirement.
Claims (1)
1. the densification board using poplar board is produced the method for multi-layer solid wood composite floor, it is characterized in that its production technology part:
1. the preparation of panel: the board using poplar board of peeler rotary-cut, do through gas, make the veneer that specification is 400～2200mm * 180～1220mm * 1.6～3.0mm; The adjusting moisture content is 10-18%, and to place hot pressing temperature be compression in 120-140 ℃ the hot press, and pressure is controlled at 5-10MPa, and be 6-12min pressing time, and the scope of veneer compression ratio is 30-65%; It is 205-220 ℃ of drying equipment high-temperature heat treatment 20-40min that the veneer of densificationization is placed temperature, eliminates the internal stress that veneer produces in the densification process; The board using poplar board of densification is deposited at normal temperatures, more than one week of resting period, is used for the panel that the floor produces after the release residual stress;
2. the preparation of base material: base material adopts rotary cut venner, and veneer thickness 1.2-3mm, moisture content are 7-12%, and rotary cut venner is made floor base material through gluing, assembly, hot pressing;
3. the manufacturing of multi-layer solid wood composite floor: as panel, plate thickness is 0.6-2.0mm through the board using poplar board of densificationization and high-temperature heat treatment, and moisture content is 4-7%, adopts the EPI adhesive, and panel double spread amount is 280-360g/m
2, moulding pressure 1-1.8MPa, pressed temperature 15-80 ℃, time 20-90min;
4. jagsaw cut, vertical deep-sawing, vertically, laterally tenon and tongue-and-groove processing;
5. make multi-layer solid wood composite floor through sanding and paint.
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| CN2011101593744A CN102179854A (en) | 2011-06-15 | 2011-06-15 | Method for producing multi-layer solid-wood composite floor by densified poplar single board |
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| CN2011101593744A CN102179854A (en) | 2011-06-15 | 2011-06-15 | Method for producing multi-layer solid-wood composite floor by densified poplar single board |
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Cited By (10)
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| CN102554980A (en) * | 2012-02-20 | 2012-07-11 | 浙江世友木业有限公司 | Manufacturing method of laminated veneer lumber |
| CN102642234A (en) * | 2012-05-09 | 2012-08-22 | 江苏快乐木业集团有限公司 | Homodromous wood shaving structural material and machining method thereof |
| CN103496023A (en) * | 2013-09-29 | 2014-01-08 | 巴洛克木业(中山)有限公司 | Method for manufacturing solid wood multilayer composite floor |
| CN103737678A (en) * | 2013-12-11 | 2014-04-23 | 中南林业科技大学 | Veneer densified glueing method |
| CN104708686A (en) * | 2015-03-27 | 2015-06-17 | 广西南宁侨盛木业有限责任公司 | Integrated solid wood panel of embedded structure |
| CN109176811A (en) * | 2018-09-30 | 2019-01-11 | 河南省林业科学研究院 | A kind of processing method of superficial charring poplar solid wooden floor board |
| WO2019128197A1 (en) * | 2017-12-29 | 2019-07-04 | 南京林业大学 | Method for compressing and compacting wood material |
| CN110385760A (en) * | 2018-04-20 | 2019-10-29 | 郑原龙 | A kind of cotton swab wooden stick and preparation method thereof |
| CN110614691A (en) * | 2019-11-25 | 2019-12-27 | 内蒙古农业大学 | Preparation method of densified wood-based graphene conductive composite material |
| US11498240B2 (en) | 2017-12-29 | 2022-11-15 | Ahf, Llc | Densified wood including process for preparation |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554980A (en) * | 2012-02-20 | 2012-07-11 | 浙江世友木业有限公司 | Manufacturing method of laminated veneer lumber |
| CN102642234A (en) * | 2012-05-09 | 2012-08-22 | 江苏快乐木业集团有限公司 | Homodromous wood shaving structural material and machining method thereof |
| CN103496023B (en) * | 2013-09-29 | 2015-09-09 | 巴洛克木业(中山)有限公司 | Method for manufacturing solid wood multilayer composite floor |
| CN103496023A (en) * | 2013-09-29 | 2014-01-08 | 巴洛克木业(中山)有限公司 | Method for manufacturing solid wood multilayer composite floor |
| CN103737678A (en) * | 2013-12-11 | 2014-04-23 | 中南林业科技大学 | Veneer densified glueing method |
| CN103737678B (en) * | 2013-12-11 | 2015-05-27 | 中南林业科技大学 | Veneer densified glueing method |
| CN104708686A (en) * | 2015-03-27 | 2015-06-17 | 广西南宁侨盛木业有限责任公司 | Integrated solid wood panel of embedded structure |
| WO2019128197A1 (en) * | 2017-12-29 | 2019-07-04 | 南京林业大学 | Method for compressing and compacting wood material |
| US11498240B2 (en) | 2017-12-29 | 2022-11-15 | Ahf, Llc | Densified wood including process for preparation |
| US11931917B2 (en) | 2017-12-29 | 2024-03-19 | Ahf, Llc | Densified wood including process for preparation |
| CN110385760A (en) * | 2018-04-20 | 2019-10-29 | 郑原龙 | A kind of cotton swab wooden stick and preparation method thereof |
| CN109176811A (en) * | 2018-09-30 | 2019-01-11 | 河南省林业科学研究院 | A kind of processing method of superficial charring poplar solid wooden floor board |
| CN110614691A (en) * | 2019-11-25 | 2019-12-27 | 内蒙古农业大学 | Preparation method of densified wood-based graphene conductive composite material |
| CN110614691B (en) * | 2019-11-25 | 2021-11-16 | 内蒙古农业大学 | Preparation method of densified wood-based graphene conductive composite material |
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Application publication date: 20110914 |