CN201385339Y - A solid wood composite board with even-numbered layers and symmetrical structure - Google Patents
A solid wood composite board with even-numbered layers and symmetrical structure Download PDFInfo
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- CN201385339Y CN201385339Y CN200920105910U CN200920105910U CN201385339Y CN 201385339 Y CN201385339 Y CN 201385339Y CN 200920105910 U CN200920105910 U CN 200920105910U CN 200920105910 U CN200920105910 U CN 200920105910U CN 201385339 Y CN201385339 Y CN 201385339Y
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Abstract
本实用新型提供一种偶数层对称结构实木复合板材，是由偶数层单板组成，包括两个外表面的表层和其间的芯层，各层单板之间设有胶粘剂；所述芯层由4.5mm～12mm厚的超厚单板组成，表层用0.2mm～1.5mm厚的单板组成；所用的芯层超厚单板为经原木旋切而成的单板，在其松面的顺纹方向设有点状或线段状的裂纹。本实用新型偶数层对称结构实木复合板材，通过采用以偶数层对称结构组坯，同时在芯层的单板表面进行疏解形成点状或线段状的裂纹，使得用超厚芯板组合起来的复合板依然可以做到不翘曲、不变形，其性能与实木相当，超厚的芯板可以使得胶合板的胶层减少，不仅减少了施胶量，节约成本，更可以减少甲醛的释放量，使得本实木复合板更加环保。
The utility model provides a solid wood composite board with an even-numbered layer symmetrical structure, which is composed of an even-numbered layer of veneer, including two outer surface layers and a core layer therebetween, and an adhesive is arranged between each layer of veneer; the core layer is composed of 4.5mm-12mm thick super-thick veneer, the surface layer is composed of 0.2mm-1.5mm thick veneer; There are point-like or line-segment cracks in the grain direction. The solid wood composite board with even-numbered layer symmetrical structure of the utility model adopts the even-numbered layer symmetrical structure to form blanks, and at the same time decomposes on the veneer surface of the core layer to form point-shaped or line-segment-shaped cracks, so that the composite board combined with an ultra-thick core board The board can still be warped and deformed, and its performance is equivalent to that of solid wood. The ultra-thick core board can reduce the glue layer of the plywood, which not only reduces the amount of glue applied, saves costs, but also reduces the release of formaldehyde, making The solid wood composite board is more environmentally friendly.
Description
Technical field
The utility model relates to a kind of even level symmetrical structure composite board, relates in particular to the composite plate made from solid wood made from super thick rotary cut venner.
Background technology
At present, composite plate made from solid wood mainly comprises two big series products such as core-board and multi-layer solid wood composite plywood, core-board is that the upper and lower surface of the central layer that is combined at the scantling piece respectively covers one deck veneer, through a kind of special glued board that glue laminated forms, central layer normally is cut into the solid wood bar with log saw and jigsaw or the wooden lattice structure plate formed.The swage set loss is many when adopting this method manufacturing central layer to exist the log saw sanction, timber utilization rate is low, and because the batten in the core-board that combines, adopt splicing to connect between it is horizontal, cause the horizontal MOR of central layer to depend primarily on the bonding strength of adhesive, so core-board does not reach request of national standard (Zou Linlin usually owing to transverse strength is low, Lv Bin, Yang Na. China's core-board current situation and quality problems analysis, forestry machinery and woodworking equipment, 2006,34 (5): 4-6.); The multi-layer solid wood composite plywood is a veneer of log being made 1mm～3mm, make through operations such as super-dry, gluing, assembly, hot pressing, this composite board is because used veneer is thinner, the composite board of production same thickness, veneer is thin more, glue-line is many more, and employed adhesive is just many more, thereby causes burst size of methanal to increase increase with cost.Chinese patent 01133469.X has proposed three layers of glued board that the veneer of a kind of 4mm of employing～10mm makes as central layer, after sanding, sticks the multi-layer solid wood composite that musculus cutaneus forms again on upper and lower surface.Because the veneer of 4mm～10mm exists bigger stress, therefore in the dry run of veneer, very easily produce phenomenons such as buckling deformation (even causing as shown in Figure 1 Texturized) and cracking, had a strong impact on volume recovery and the postorder manufacturing procedure such as the operations such as gluing, assembly of veneer; Secondly, the veneer that adopts this structure because the stress of veneer is excessive, causes produced composite board to be easy to generate buckling deformation as central layer; Moreover, adopt secondary veneer processing technology, increased the veneer operation.
The utility model content
The purpose of this utility model is to improve the deficiency of existing technology, provide a kind of its each to intensity all meet national standard, be difficult for buckling deformation, easy to process, the low even level symmetrical structure composite plate made from solid wood that can reduce cost of adhesive consumption;
For achieving the above object, the utility model is taked following technical scheme:
The even level symmetrical structure composite plate made from solid wood that the utility model provides is made up of the even level veneer, comprises that the top layer of two outer surfaces and sandwich layer therebetween constitute, and are provided with adhesive between each layer veneer;
Described sandwich layer is made up of the super thick veneer of 4.5mm～12mm, and the top layer is then formed with the veneer of 0.2mm～1.5mm;
The super thick veneer of used sandwich layer is the veneer that forms through rounding, is provided with the crackle of point-like or line segment shape in the rift grain direction of its loose side.
Crackle on the super thick loose side of above-mentioned sandwich layer, its average length are between 2.0cm～5.0cm, and mean depth is 1/6～1/2 of a thickness of slab, perhaps
Its average length is between 2.0cm～5.0cm, and mean depth is 1/6～1/2 of a thickness of slab, and mean breadth is 0.2mm～3mm, and the average headway between the crackle is 0.5cm～5cm.
Further, described sandwich layer can be by 2,4,6,8 ... form Deng the super thick veneer of even level, adopt parallel or chi structure assembly.
More specifically, wherein, two veneers at center are middle central layer, its loose side relative bonding, the loose side of each layer veneer of its outside be all towards middle central layer, symmetrical assembly, its texture can be parallel with the two-layer middle central layer in center, also the vertical or setting that interlaces of middle central layer that can be two-layer with the center;
Between described sandwich layer and top layer, can also comprise time top layer, inferior top layer is a time core layer, be also referred to as balance layer, the veneer that this balance layer thickness is 1mm～3mm is made, the veneer of this time core layer moves towards the vertical or setting that interlaces with the texture of sandwich layer and face ply, and its effect is the cupping that prevents sandwich layer sheet material.
At described even level symmetrical structure composite plate made from solid wood, wherein said sandwich layer can use low-quality timber such as poplar, China fir, cryptomeria, metasequoia, dragon spruce, and the super thick veneer that forms 4.5mm～12mm through rotary-cut is made; The thickness that described top layer can be formed by the hard broadleaf rotary-cut of preciousnesses such as teak, yellow wingceltis, clone's wood is that the decoration veneer of 0.2mm～1.5mm is made.
If comprise the top layer described time, the thickness that the veneer on then described time top layer can be formed by artificial forest fast growing wood rotary-cuts such as poplar, birch or eucalyptus is that the common veneer of 1mm～3mm is made.
The even level symmetrical structure composite plate made from solid wood that the utility model provides has following advantage:
By adopting even level symmetrical structure assembly, help to eliminate the coupling effect between each layer of slab, reduced the distortion of slab.
By discongest the crackle that forms point-like or line segment shape on the veneer surface of sandwich layer, compare with untreated veneer, after the stress release processing, formed the crackle of point-like or line segment shape in the rift grain direction of loose side, has tangible advantage: at first, after handling through stress release, weaken the lateral stress effect of super thick veneer, thereby avoided the problems such as warpage, distortion of veneer; Secondly, after handling through stress release, the surface stress of veneer obtains discharging, and can reduce the loss of breaking and causing because of veneer in operations such as follow-up drying, applying glue, assembly, thereby has improved the utilization rate of timber; Moreover after the stress release processing, veneer has formed the crackle of point-like or line segment shape, has increased the specific area of veneer, and the resistance of the moisture discharge of timber is significantly reduced, thereby has improved the rate of drying of veneer, the energy consumption when promptly having reduced veneer drying;
The utility model uses the super thick veneer of 4.5mm～12mm, is that the veneer of 1mm～3mm is compared with common thickness, has tangible advantage: compare with common multi-layer solid wood composite plywood, increased the solid wood sense of sheet material, reduce the number of plies of glue-line, reduced resin added, thereby reduced cost; Compare with core-board, reduced the loss of swage set when log saw is cut into the solid wood bar, improved the utilization rate of timber, because of adopting rotary cutting process, improved production efficiency simultaneously.Below be 1.5mm with the sandwich layer, 3mm, the veneer that 4.5mm and 9mm are thick, backboard and panel adopt the thick fancy veneer of one deck 1mm respectively, make the composite plate made from solid wood that target thickness is 18mm, and the relation between used veneer thickness and the resin added is described.As can be seen from Table 1, along with the increase of veneer thickness, resin added reduces, and produces the thick sheet material of 18mm equally, only is 26.31% of the thick veneer of 1.5mm if adopt the thick veneer resin added of 4.5mm; If adopt the thick veneer of 9mm, its resin added only is 15.79% of the thick veneer of 1.5mm.The minimizing of resin added greatly reduces the production cost of sheet material.
Relation between table 1 veneer thickness and the resin added
| Veneer thickness (mm) | 1.5 | 3 | 4.5 | 9 |
| Compression ratio (%) | 10％ | 10％ | 10％ | 10％ |
| Sheet material target thickness (mm) | 18 | 18 | 18 | 18 |
| The veneer number (opening) that sandwich layer needs | 18 | 6 | 4 | 2 |
| Glue-line number (layer) | 19 | 7 | 5 | 3 |
| Resin added (the g/m of each glue-line 2) | 200 | 200 | 200 | 200 |
| Total resin added (g) | 3800 | 1400 | 1000 | 600 |
The utility model is described in further detail below in conjunction with specific embodiment, is not to restriction of the present utility model, every any this area of being carried out according to the utility model disclosure be equal to replacement, all belong to protection domain of the present utility model.
Description of drawings
Fig. 1 is the buckling deformation without the thick veneer generation of 4.5mm～12mm of overstress degraded
Fig. 2 is the super thick veneer of 4.5mm～12mm through the stress degraded
Fig. 3 is the composite plate made from solid wood that the super thick veneer of even level is made
Number in the figure is represented respectively: 1 is point-like or wire crackle, and 2,3 is super thick rift grain central layer, and 4,5 are respectively down dash board up and down.
The specific embodiment
The even level symmetrical structure composite plate made from solid wood that the utility model provides is made up of the even level veneer, comprises the top layer of two outer surfaces and sandwich layer therebetween, is provided with adhesive between each layer veneer;
Described sandwich layer can be by 2 layers, 4 layers, 6 layers, 8 layers ... form Deng the super thick veneer of even level, adopt parallel or chi structure assembly, wherein, two veneers at center are middle central layer, its loose side relative bonding, the loose side of each layer veneer of its outside be all towards middle central layer, symmetrical assembly, its texture can be parallel with the two-layer middle central layer in center, also can be vertical with the two-layer middle central layer in center.
In the present embodiment, as shown in Figure 3, described sandwich layer is made up of 2 layers of thick super thick veneer 2,3 of 4.5mm～12mm, it is that low-quality timber such as poplar, China fir, cryptomeria, metasequoia, dragon spruce are made, top layer (decorative layer) is formed with the thick veneer 4,5 of 0.2mm～1.5mm, and it is that precious hard broadleaf such as teak, yellow wingceltis, clone's wood is made.
The super thick veneer of used sandwich layer is the veneer that forms through rounding, is provided with the crackle 1 (seeing shown in Figure 2) of point-like or line segment shape in the rift grain direction of its loose side.
Crackle on the used super thick loose side of above-mentioned sandwich layer, its average length is between 2.0cm～5.0cm, and mean depth is 1/6～1/2 of its thickness of slab, and mean breadth is 0.2mm～3mm, and the average headway between the crackle is 0.5cm～5cm.
The manufacture method of the even level symmetrical structure composite plate made from solid wood that the utility model provides comprises the steps:
A. sheet making:
With low-quality timber such as poplar, China fir, cryptomeria, metasequoia or dragon spruces, form the super thick veneer of 4.5mm～12mm through rotary-cut, this veneer is discongested through discongesting device again, makes its loose side rift grain direction form point-like and/or line segment shape crackle, as the sandwich layer veneer.
Artificial forest fast growing wood rotary-cuts such as poplar, birch or eucalyptus are formed the common veneer of 1mm～3mm, as inferior top layer veneer;
With precious hard broadleafs such as teak, yellow wingceltis or clone's wood, form the veneer of 0.2mm～1.5mm through rotary-cut, as the ornamental veneer in top layer;
B. dry:
With above-mentioned veneer drying to moisture content is 8%～15%;
C. gluing:
Used adhesive can be wherein a kind of of the glutinous agent of urea-formaldehyde glue, melamine modified urea-formaldehyde glue glutinous agent, phenolic aldehyde adhesive or isocyanates etc.;
The common veneer of super thick veneer of sandwich layer and time top layer is carried out applying glue, and when used adhesive was the glutinous agent of urea-formaldehyde glue, the glutinous agent of melamine modified urea-formaldehyde glue or phenolic aldehyde adhesive, its resin added was (150～300) g/m
2When used adhesive was isocyanates, its resin added was (20～50) g/m
2
Top layer not applying glue of thin veneer.
D. assembly:
With the loose side after the applying glue towards symmetrical centre, symmetrical assembly, all super thick veneers are mated formation at the sandwich layer of sheet material by the rift grain direction; 2 thin veneers are mated formation on upper and lower top layer symmetrically by the rift grain direction.
E. hot pressing:
Carry out hot pressing for assembly, it is become one.
Kind according to employed bonding agent in the hot pressing process is set suitable hot pressing temperature, hot pressing pressure and hot pressing time.
Stick agent or the glutinous agent of melamine modified urea-formaldehyde glue if adhesive is a urea-formaldehyde glue, its resin added is (150-300) g/m
2, hot pressing temperature is (120～160) ℃, and hot pressing pressure is (0.7～2) MPa, and hot pressing time is (0.5～1.6) min/mm; If adhesive is the phenolic aldehyde adhesive, its resin added is for being (150-300) g/m
2, hot pressing temperature is (130-180) ℃, and hot pressing pressure is (0.7～2) MPa, and hot pressing time is (0.5～2) min/mm; If adhesive is an isocyanates, its resin added is (20～50) g/m
2, hot pressing temperature is (90～130) ℃, and hot pressing pressure is (0.7～2) MPa, and hot pressing time is (0.5～1.2) min/mm.
The even level symmetrical structure composite plate made from solid wood that the utility model provides has following advantage:
Sandwich layer adopts super thick veneer, has reduced the glue-line number, has saved the consumption of adhesive, has reduced cost.If adopt the aldehydes adhesive, compare with existing glued board, because adhesive layer can reduce under the same thickness, therefore, can also reduce the burst size of gases such as formaldehyde;
Low-quality timber is peeled into the thick super thick veneer of 4.5mm～12mm, makes composite plate made from solid wood, compare, reduced the loss of timber swage set, improved the utilization rate of timber with core-board with it; Compare with the glued board that common veneer is made, make the people that sensation near solid wood be arranged more.
Adopt the even level symmetrical structure, and the super thick veneer process of sandwich layer is discongested processing, help the internal stress of balance sheet material, thereby reduce the defectives such as buckling deformation of composite board.
Veneer at first, has weakened the lateral stress effect of super thick veneer through discongesting processing, thereby has avoided the problems such as warpage, distortion of veneer; Secondly, through after discongesting processing, the surface stress of veneer obtains discharging, and can reduce the loss of breaking and causing because of veneer in operations such as follow-up drying, applying glue, assembly, thereby improves the utilization rate of timber; Moreover through after discongesting processing, the eucalyptus veneer has formed the crackle of point-like or line segment shape, has increased the specific area of veneer, and the resistance of the moisture discharge of timber is reduced greatly, thereby has increased the rate of drying of veneer, the energy consumption when reducing veneer drying.
Time top layer also is set between the sandwich layer of embodiment 1 described even level symmetrical structure composite plate made from solid wood and top layer, also claim balance layer, inferior top layer (balance layer) thick 2 layers of composition of veneer of 1mm～3mm, promptly respectively establish one deck in the both sides of sandwich layer, it is that artificial forest fast growing woods such as poplar, birch or eucalyptus are made (not shown), and its effect is the cupping that prevents sandwich layer sheet material.
When assembly, (to be 1mm～3mm) mat formation outside in the thick veneer of sandwich layer both sides as inferior top layer as time top layer by the band direction to thickness symmetrically with 2 above-mentioned veneers.
Other technologies are identical with embodiment 1.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
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| CN200920105910U CN201385339Y (en) | 2009-02-13 | 2009-02-13 | A solid wood composite board with even-numbered layers and symmetrical structure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101890739A (en) * | 2010-07-16 | 2010-11-24 | 成都市双虎实业有限公司 | Composite slab with symmetric structure and manufacturing method thereof |
| CN102229159A (en) * | 2011-06-10 | 2011-11-02 | 南京林业大学 | Method for producing recombinant composite board by using waste wood |
| CN102953642A (en) * | 2011-08-23 | 2013-03-06 | 吴江市金丰木门厂 | Door plate of shikumen |
| CN103522375A (en) * | 2013-10-11 | 2014-01-22 | 中国林业科学研究院木材工业研究所 | Method for flattening and drying rotary cut veneer |
| CN104369235A (en) * | 2014-11-28 | 2015-02-25 | 苏州伊埃夫化学材料科技有限公司 | Environment-friendly multifunctional composite artificial board |
| CN106671494A (en) * | 2016-12-30 | 2017-05-17 | 河南天虹节能墙体材料有限公司 | Solid wood composite board |
| CN106945132A (en) * | 2017-01-15 | 2017-07-14 | 徐州基石无醛人造板有限公司 | Full symmetrical configuration formaldehyde-free plywood |
| CN109549374A (en) * | 2018-12-18 | 2019-04-02 | 广东顶固集创家居股份有限公司 | Stable log composite board and panel furniture |
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| CN119550437A (en) * | 2024-11-27 | 2025-03-04 | 森林态环境(宁波)有限公司 | A method for processing bamboo composite board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101890739A (en) * | 2010-07-16 | 2010-11-24 | 成都市双虎实业有限公司 | Composite slab with symmetric structure and manufacturing method thereof |
| CN101890739B (en) * | 2010-07-16 | 2012-08-29 | 成都市双虎实业有限公司 | Manufacturing method of Composite slab with symmetric structure |
| CN102229159A (en) * | 2011-06-10 | 2011-11-02 | 南京林业大学 | Method for producing recombinant composite board by using waste wood |
| CN102953642A (en) * | 2011-08-23 | 2013-03-06 | 吴江市金丰木门厂 | Door plate of shikumen |
| CN103522375A (en) * | 2013-10-11 | 2014-01-22 | 中国林业科学研究院木材工业研究所 | Method for flattening and drying rotary cut veneer |
| CN103522375B (en) * | 2013-10-11 | 2015-11-25 | 中国林业科学研究院木材工业研究所 | A kind of flattening of rotary cut venner and drying means |
| CN104369235A (en) * | 2014-11-28 | 2015-02-25 | 苏州伊埃夫化学材料科技有限公司 | Environment-friendly multifunctional composite artificial board |
| CN106671494A (en) * | 2016-12-30 | 2017-05-17 | 河南天虹节能墙体材料有限公司 | Solid wood composite board |
| CN106945132A (en) * | 2017-01-15 | 2017-07-14 | 徐州基石无醛人造板有限公司 | Full symmetrical configuration formaldehyde-free plywood |
| CN109549374A (en) * | 2018-12-18 | 2019-04-02 | 广东顶固集创家居股份有限公司 | Stable log composite board and panel furniture |
| CN113605632A (en) * | 2021-08-11 | 2021-11-05 | 黑龙江省木材科学研究所 | Geothermal floor with wing-shaped frame structure |
| CN119550437A (en) * | 2024-11-27 | 2025-03-04 | 森林态环境(宁波)有限公司 | A method for processing bamboo composite board |
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Granted publication date: 20100120 Termination date: 20140213 |