CN102699963A - Anti-corrosive plywood and production method thereof - Google Patents
Anti-corrosive plywood and production method thereof Download PDFInfo
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- CN102699963A CN102699963A CN2012101922375A CN201210192237A CN102699963A CN 102699963 A CN102699963 A CN 102699963A CN 2012101922375 A CN2012101922375 A CN 2012101922375A CN 201210192237 A CN201210192237 A CN 201210192237A CN 102699963 A CN102699963 A CN 102699963A
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Abstract
The invention discloses an anti-corrosive plywood and a production method thereof. The anti-corrosive plywood is produced by alternately overlapping and carrying out cold pressing on an anti-corrosive single plate and a glued anti-corrosive single plate; the anti-corrosive single plate is produced by immersing a single plate in preservatives for a time and then drying the single plate; the glued anti-corrosive single plate is produced by wiping glues on the upper surface and the lower surface of the anti-corrosive single plate; and the anti-corrosive plywood is produced by alternately overlapping the anti-corrosive single plate and the glued anti-corrosive single plate to a combined blank with needed thickness and then carry out the cold pressing. The anti-corrosive plywood is produced in a room-temperature cold pressing way and has the advantages of good dimension stability, adjustable thickness, uniform preservative distribution, high leachability resistance and lower cost; and in addition, the product can replace an anti-corrosive log product, thereby reducing the consumption of large-diameter grade logs.
Description
Technical field
The invention belongs to the manufacture technology field of anticorrosion wood-based plate, more specifically relate to a kind of preserved plywood that can be used for indoor or outdoors and preparation method thereof.
Background technology
No matter former woodwork all gives the sensation of warm nature in sense organ or sense of touch.Along with the raising of expanding economy and people's living standard, former woodwork is more and more widely used at aspects such as garden landscape, interior decoration, furniture.But all relatively poor without antiseptic normal wood goods weatherability and durability, subject to the infringement of moth, microorganism etc. and lose function of use or reduction of service life at indoor or outdoors.The woodwork that possesses anti-corrosion function in the existing market mainly can be divided into former wood corrosion-proof woodwork and the anticorrosion woodwork of wood-based plate according to wood raw material.Former wood corrosion-proof woodwork is simple to raw material machining in process of production, but dry complicated with the preservative treatment process, and raw material is from day by day less big footpath level log, and timber utilization rate is low, and cost is high; In addition, in use all there is the losing issue of anticorrisive agent in what to civilian anticorrosion wood, run off even more serious without the anticorrisive agent of the civilian anticorrosion wood of water-proofing treatment again especially for the open air.The anticorrosion woodwork of wood-based plate is mainly the wood-based plate of high temperature compacting; Lean on high temperature and the composition in the adhesive (like formaldehyde) in the production process to reach the purpose of eliminating the woodwork corrupt elements; But also cause content of formaldehyde height in the product, the formaldehyde contaminated environment that constantly discharges, harm user's health; And the high temperature of production process is prone to cause wood color to change, and influences outward appearance.Therefore, after preservative treatment, cooperate the cold curing adhesive to make anticorrosion wood-based plate wood single-plate, not only can reduce anticorrosion wooden cost, more can reduce felling, reduce anticorrisive agent and run off, the protection environment big footpath level log.
Publication number is that the patent of invention of CN 101491904A discloses " production method of antiseptic fire-retardation artificial board ".This patent is the ratio wiring solution-forming of 1:1 with the mass ratio with fire-retarding preservative and water earlier, after preparation central layer, bed board, precompressed, is 10kgf/cm at pressure
2, be hot pressed into blank flat under the temperature 120-140 ℃, hot-forming with thick china again, after polishing cutting edge, sprayed panel, process product again.The antiseptic fire-retardation artificial board that the method for this patent is made not only can guarantee the log character of wood-based plate, and can reach the effect of comprehensive security antiseptic fire-retardation.But the fire retardant, anticorrosive agent concentration that uses is high, has increased cost; And repeatedly adopt heat pressing process, energy consumption is high; And high temperature hot pressing is prone to cause sapstain, and quality reduces, and needs remedy with surfacing process, and this has further improved cost again.
Granted publication number discloses a kind of " anticorrosion wood-based plate " for the utility model patent of CN 201728709 U.The disclosed a kind of anticorrosion wood-based plate of this patent is made up of the wood-based plate body (for glued board, particieboard, fiberboard or core-board) and the silicone oil of top layer coating.This utility model is a kind of anticorrosion wood-based plate that mould corruption and long service life can not take place.But the silicone oil that plays anti-corrosion function is coated the pollution that the top layer is prone to cause other article; And top layer silicone oil has disappearance slightly, and inner wood-based plate body still can receive the invasion and attack of microorganism and produce rotten.
Publication number is that the patent of invention of CN 101422913 A discloses " timber is carried out method for anticorrosion treatment reach the preserving timber by this method preparation ".The anticorrisive agent that this patent is made into sodium fluoborate and DDAC solution earlier; Again timber is immersed anticorrisive agent, timber is carried out decompression vacuum pumping handle, make timber fully absorb the boryl anticorrisive agent; Then timber is carried out pressurized treatments, make anticorrisive agent fully infiltrate timber, process anticorrosion wood at last.The method timber treatment process is simple, and is easy to operate; The turnover rate of boron is low in the timber of preparation, and resistance leachability can significantly improve, and the conservation rate of boron is up to 75-100%, and antiseptic effect obviously strengthens.But log material and anticorrisive agent impregnating method that this patent adopts, it is high to be prone to form log top layer concentration of preservatives, and the phenomenon that sandwich layer concentration is low causes sandwich layer wood preservation poor performance; And log is big more, and anticorrisive agent is more difficult to soaking into fully of timber, and the anticorrosion wood of making is also yielding; In addition, this anticorrisive agent resistance leachability preferably is sodium fluoborate and the DDAC result after composite, and this has increased the cost that wood preservation is handled again.
Summary of the invention
For addressing the above problem, the invention provides a kind of preserved plywood and preparation method thereof, can be used for the production of indoor or outdoor anticorrosion woodwork.The mode that this preserved plywood is colded pressing with room temperature is produced, and dimensional stability is good, the thickness scalable, and anticorrisive agent is evenly distributed, resistance leachability is strong, and cost is lower; The alternative former wood corrosion-proof woodwork of product reduces the consumption of big footpath level log.
A kind of preserved plywood of the present invention and preparation method thereof is characterized in that: preserved plywood is by anticorrosion veneer, and the anticorrosion veneer of gluing replaces stacked cold compaction and gets; Said anticorrosion veneer is the former veneer that in antiseptic solution, soaked; The anticorrosion veneer of said gluing is the anticorrosion veneer at the upper and lower surfaces coated with adhesive.
Wherein said anticorrosion veneer is by following steps preparations and get: 1. anticorrisive agent is added the antiseptic solution that water prepares and place container; 2. former veneer is immersed and be equipped with in the container of antiseptic solution, soak 30-120min; 3. take out the former veneer of preservative treatment, drain the surface anticorrosion agent solution, be dried to moisture content 5-20%.
Step 1. in used container be the opened type conventional vessel; Said antiseptic solution is that mass concentration is the aqueous preservative solution of 0.15-4.00%; It is under normal pressure that step is soaked in 2., and veneer is submerged in the antiseptic solution fully; Step 3. baking temperature is not higher than 60 ℃.
Said former veneer is one or more in the veneer that goes out of the rounding of softwood or broadleaf seeds, and moisture content is 5-20%, and thickness is 0.5-3.0mm.Former veneer is preferably one or more in the veneer that the rounding of masson pine, Eucalyptus urophylla-grandis or poplar goes out, and moisture content is 5-20%, and thickness is 0.5-3.0mm.
Said anticorrisive agent is one or more mixtures in alkyl ammonium compound, boron compound, quaternary ammonium copper, copper azoles or the copper citrate.Said boron compound is one or both the mixture in sodium tetraborate or the boric acid.
Said adhesive is modified soybean adhesive, waterborne polyurethane resin adhesive, epoxyn, resorcinol modified phenolic resin adhesive or the modified urea-formaldehyde resin adhesive of cold curing.
The concrete steps of the preparation method of preserved plywood of the present invention are following:
1. the antiseptic solution that anticorrisive agent is added water preparation places container;
The former veneer that 2. will be dried to moisture content and be 5-20% immerses and is equipped with in the container of antiseptic solution, soaks 30-120min;
3. take out veneer, drain the surface anticorrosion agent solution, be dried to moisture content 5-20%, get anticorrosion veneer through preservative treatment;
4. get the anticorrosion veneer of part, the double spread adhesive obtains the anticorrosion veneer of gluing;
5. by identical grain direction replace stacked to the thickness group embryo that need with anticorrosion veneer the anticorrosion veneer of gluing;
6. behind the assembly ageing 10min, send in the trigger squeeze and cold pressing, process the preserved plywood blank;
7. the preserved plywood blank goes out behind the trigger squeeze that saw removes the corner behind the health 24h, is sawn into the preserved plywood finished product by specification again.
Wherein step 1. in used container be the opened type conventional vessel; Said antiseptic solution is that mass concentration is the aqueous preservative solution of 0.15-4.00%;
It is under normal pressure that step is soaked in 2., and former veneer is submerged in the antiseptic solution fully;
Step 3. baking temperature is not higher than 60 ℃;
A step 4. anticorrosion veneer double spread amount is 250-350g/m
2;
Step 6. in the used time of colding pressing be 40-80min.
With the preserved plywood that composition of raw materials of the present invention and method thereof are produced, to produce with the mode that room temperature is colded pressing, dimensional stability is good, the thickness scalable, anticorrisive agent is evenly distributed, resistance leachability is strong, and cost is lower, the alternative former wood corrosion-proof woodwork of product.
The present invention compared with prior art has following advantage:
1. product thickness regulated at will as requested;
2. the product physical and mechanical property is good, can reach the requirement of laminated veneer lumber among the GB/T 20241-2006;
3. concentration of preservatives is low, can reduce product cost;
4. every layer of equal preservative treatment of veneer, anticorrisive agent is evenly distributed in the product;
5. every layer of veneer that contains anticorrisive agent receives the obstruct of glue-line, and the anticorrisive agent resistance leachability is strong;
6. adopt the mode of colding pressing to produce, the process energy consumption is low, the product size good stability;
7. free formaldehyde release reaches E
0Level, good environmental protection.
Description of drawings
Fig. 1 is the structural representation of the preserved plywood among the embodiment.
The anticorrosion veneer of gluing of the anticorrosion veneer 2-of description of drawings: 1-upper and lower surfaces gluing.
The specific embodiment
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and conjunction with figs., elaborate as follows, but the present invention is not limited to this.
Embodiment 1
It is 0.15% solution that quaternary ammonium copper (ACQ) and water are made into mass concentration, places the opened type conventional vessel; Again with 35 thickness be 0.5 mm, to dry to moisture content be that 5% masson pine veneer immerses in the ACQ impregnating fluid fully, soaks 30min; Take out, drain surface anticorrosion liquid; Under 40 ℃, dry to moisture content be 20%; Be cooled to room temperature; The waterborne polyurethane resin adhesive is uniformly coated on masson pine veneer surface (the common 250g/m of double spread amount of 17 ACQ preservative treatments through roll coater
2); By identical grain direction, with the veneer of gluing and gluing not assembly at interval, ageing 10min; Send into the thickness of colding pressing in the trigger squeeze then, pressurize 40min to 15mm; Room temperature health 24h after the release, saw removes the corner again, described a kind of preserved plywood.
Embodiment 2
It is 0.3% solution that alkyl ammonium compound (AAC) and water are made into mass concentration, places the opened type conventional vessel; Be 2.4mm with 71 thickness again, drying to moisture content is that 10% masson pine veneer immerses in the AAC impregnating fluid fully, soaks 80min; Take out, drain surface anticorrosion liquid; Under 50 ℃, dry to moisture content be 8%; Be cooled to room temperature then; The resorcinol modified phenolic resin adhesive is uniformly coated on masson pine veneer surface (the common 280g/m of double spread amount of 35 AAC preservative treatments through roll coater
2); By identical grain direction, with the veneer of gluing and gluing not assembly at interval, ageing 10min; Send into the thickness of colding pressing in the trigger squeeze then, pressurize 60min to 150mm; Room temperature health 24h after the release, saw removes the corner again, described a kind of preserved plywood.
Embodiment 3
It is 4% solution that boric acid and water are made into mass concentration, places the opened type conventional vessel; Be 2.0mm with 111 thickness again, drying to moisture content is that 20% masson pine veneer immerses in the boric acid impregnating fluid fully, soaks 100min; Take out, drain surface anticorrosion liquid; Under 60 ℃, dry to moisture content be 10%; Be cooled to room temperature then; Epoxyn is uniformly coated on masson pine veneer surface (the common 320g/m of double spread amount of 55 boric acid preservative treatments through roll coater
2); By identical grain direction, with the veneer of gluing and gluing not assembly at interval, ageing 10min; Send into the thickness of colding pressing in the trigger squeeze then, pressurize 40min to 200mm; Room temperature health 24h after the release, saw removes the corner again, described a kind of preserved plywood.
Embodiment 4
It is 0.5% solution that copper azoles (CuAz) and water are made into mass concentration, places the opened type conventional vessel; Be 0.5mm with 23 thickness again, drying to moisture content is that 15% board using poplar board immerses in the CuAz impregnating fluid fully, soaks 50min; Take out, drain surface anticorrosion liquid; Under 45 ℃, dry to moisture content be 10%; Be cooled to room temperature then; Modified urea-formaldehyde resin adhesive is uniformly coated on board using poplar board surface (the common 250g/m of double spread amount of 11 CuAz preservative treatments through roll coater
2); By identical grain direction, with the veneer of gluing and gluing not assembly at interval, ageing 10min; Send into the thickness of colding pressing in the trigger squeeze then, pressurize 60min to 10mm; Room temperature health 24h after the release, saw removes the corner again, described a kind of preserved plywood.
Embodiment 5
It is 1.0% solution that quaternary ammonium copper (ACQ) and water are made into mass concentration, places the opened type conventional vessel; Be 2.8mm with 11 thickness again, drying to moisture content is that 15% board using poplar board immerses in the ACQ impregnating fluid fully, soaks 120min; Take out, drain surface anticorrosion liquid; Under 60 ℃, dry to moisture content be 15%; Be cooled to room temperature then; Through manual gluing, the modified soybean adhesive is uniformly coated on board using poplar board surface (the common 350g/m of double spread amount of 5 ACQ preservative treatments
2); By identical grain direction, with the veneer of gluing and gluing not assembly at interval, ageing 10min; Send into the thickness of colding pressing in the trigger squeeze then, pressurize 80min to 28mm; Room temperature health 24h after the release, saw removes the corner again, described a kind of preserved plywood.
Embodiment 6
It is 2.0% solution that copper citrate (CC) and water are made into mass concentration, places the opened type conventional vessel; Be 3.0mm with 11 thickness again, drying to moisture content is that 10% board using poplar board immerses in the CC impregnating fluid fully, soaks 80min; Take out, drain surface anticorrosion liquid; Under 60 ℃, dry to moisture content be 12%; Be cooled to room temperature then; With brush epoxyn is uniformly coated on board using poplar board surface (the common 300g/m of double spread amount of 5 CC preservative treatments through craft
2); By identical grain direction, with the veneer of gluing and gluing not assembly at interval, ageing 10min; Send into the thickness of colding pressing in the trigger squeeze then, pressurize 60min to 30mm; Room temperature health 24h after the release, saw removes the corner again, described a kind of preserved plywood.
Embodiment 7
It is 3.0% solution that sodium tetraborate and water are made into mass concentration, places the opened type conventional vessel, for use; 9 thickness Eucalyptus urophylla-grandis veneer that is 1.2mm dried to moisture content be 8%, for use; 10 thickness board using poplar board that is 1.8mm dried to moisture content be 10%, for use; Eucalyptus urophylla-grandis and board using poplar board are soaked in respectively in the sodium tetraborate impregnating fluid fully, and soak time is respectively 50min and 70min; Take out, drain surface anticorrosion liquid; Under 50 ℃, dry to moisture content be 10%; Be cooled to room temperature then; The modified soybean adhesive is uniformly coated on 9 Eucalyptus urophylla-grandis veneers surfaces (common 340g/m of double spread amount of sodium tetraborate preservative treatment through roll coater
2); By identical grain direction, with the board using poplar board of the Eucalyptus urophylla-grandis veneer of gluing and gluing not assembly at interval, ageing 10min; Send into the thickness of colding pressing in the trigger squeeze then, pressurize 80min to 25mm; Room temperature health 24h after the release, saw removes the corner again, described a kind of preserved plywood.
Embodiment 8
After sodium tetraborate and boric acid was the mixed of 1:1 by mass ratio, being made into mass concentration with water again was 2.0% solution, places the opened type conventional vessel; Be 2.0mm with 51 thickness again, drying to moisture content is that 10% Eucalyptus urophylla-grandis veneer immerses in the composite anti-corrosive liquid of sodium tetraborate and boric acid fully, soaks 90min; Take out, drain surface anticorrosion liquid; Under 60 ℃, dry to moisture content be 5%; Be cooled to room temperature then; The resorcinol modified phenolic resin adhesive is uniformly coated on Eucalyptus urophylla-grandis veneer surface (the common 300g/m of double spread amount of 25 sodium tetraborates and the preservative treatment of boric acid complex liquid through roll coater
2); By identical grain direction, with the veneer of gluing and gluing not assembly at interval, ageing 10min; Send into the thickness of colding pressing in the trigger squeeze then, pressurize 50min to 90mm; Room temperature health 24h after the release, saw removes the corner again, described a kind of preserved plywood.
The preserved plywood that makes among the embodiment 1～8, physical and mechanical property all can reach the requirement of laminated veneer lumber among the GB/T 20241-2006; Burst size of methanal all reaches the E among the GB/T 9846-2004
0Level; The anticorrisive agent resistance leachability detects and carries out with reference to the method for U.S. AWPA E11-06, and concrete resistance leachability is relevant with the anticorrisive agent kind, and average out to 97.3% has improved 62.6% than the former wood corrosion-proof wood that adopts identical seeds and anticorrisive agent; Antimicrobial invasion and attack performance all reaches the requirement of LY/T1283-2011.
This preserved plywood can require to produce according to different specifications, can be processed into timber floor, view booth, view plank road, spandrel girder etc., plays to substitute the former wood corrosion-proof wood of big footpath level, reduces the consumption effect of big footpath level log.
Claims (10)
1. preserved plywood, it is characterized in that: said preserved plywood is by anticorrosion veneer, and the anticorrosion veneer of gluing replaces stacked cold compaction and gets; Said anticorrosion veneer is the former veneer that in antiseptic solution, soaked; The anticorrosion veneer of said gluing is the anticorrosion veneer at the upper and lower surfaces coated with adhesive.
2. a kind of preserved plywood as claimed in claim 1 is characterized in that:
Said anticorrosion veneer is by following steps preparations and get: 1. anticorrisive agent is added the antiseptic solution that water prepares and place container; 2. former veneer is immersed and be equipped with in the container of antiseptic solution, soak 30-120min; 3. take out the former veneer of preservative treatment, drain surface anticorrosion liquid, be dried to moisture content 5-20%.
3. preserved plywood as claimed in claim 2 is characterized in that:
Step 1. in used container be the opened type conventional vessel; Said antiseptic solution is that mass concentration is the aqueous preservative solution of 0.15-4.00%; It is under normal pressure that step is soaked in 2., and veneer is submerged in the antiseptic solution fully; Step 3. baking temperature is not higher than 60 ℃.
4. a kind of preserved plywood as claimed in claim 1 is characterized in that: said former veneer is one or more in the veneer that goes out of the rounding of softwood or broadleaf seeds, and moisture content is 5-20%, and thickness is 0.5-3.0mm.
5. a kind of preserved plywood as claimed in claim 1 is characterized in that: one or more in the veneer that the rounding that said former veneer is masson pine, Eucalyptus urophylla-grandis or poplar goes out, moisture content are 5-20%, and thickness is 0.5-3.0mm.
6. a kind of preserved plywood as claimed in claim 1 is characterized in that: said anticorrisive agent is one or more mixtures in alkyl ammonium compound, boron compound, quaternary ammonium copper, copper azoles or the copper citrate.
7. a kind of preserved plywood as claimed in claim 6 is characterized in that said boron compound is one or both the mixture in sodium tetraborate or the boric acid.
8. a kind of preserved plywood as claimed in claim 1 is characterized in that: said adhesive is modified soybean adhesive, waterborne polyurethane resin adhesive, epoxyn, resorcinol modified phenolic resin adhesive or the modified urea-formaldehyde resin adhesive of cold curing.
9. the preparation method of a preserved plywood as claimed in claim 1 is characterized in that the concrete steps of said preparation method are following:
1. the antiseptic solution that anticorrisive agent is added water preparation places container;
The former veneer that 2. will be dried to moisture content and be 5-20% immerses and is equipped with in the container of antiseptic solution, soaks 30-120min;
3. take out veneer, drain the surface anticorrosion agent solution, be dried to moisture content 5-20%, get anticorrosion veneer through preservative treatment;
4. get the anticorrosion veneer of part,, obtain the anticorrosion veneer of gluing at double spread adhesive up and down;
5. by identical grain direction replace stacked to the thickness group embryo that need with anticorrosion veneer the anticorrosion veneer of gluing;
6. behind the assembly ageing 10min, send in the trigger squeeze and cold pressing, process the preserved plywood blank;
7. the preserved plywood blank goes out behind the trigger squeeze that saw removes the corner behind the health 24h, is sawn into the preserved plywood finished product by specification again.
10. the preparation method of a kind of preserved plywood as claimed in claim 9 is characterized in that:
Step 1. in used container be the opened type conventional vessel; Said antiseptic solution is that mass concentration is the aqueous preservative solution of 0.15-4.00%;
It is under normal pressure that step is soaked in 2., and former veneer is submerged in the antiseptic solution fully;
Step 3. baking temperature is not higher than 60 ℃;
A step 4. anticorrosion veneer double spread amount is 250-350g/m
2;
Step 6. in the used time of colding pressing be 40-80min.
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| CN201210192237.5A CN102699963B (en) | 2012-06-12 | 2012-06-12 | Anti-corrosive plywood and production method thereof |
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| CN201210192237.5A CN102699963B (en) | 2012-06-12 | 2012-06-12 | Anti-corrosive plywood and production method thereof |
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| CN102699963B CN102699963B (en) | 2015-07-08 |
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| CN103302709A (en) * | 2013-05-31 | 2013-09-18 | 中南林业科技大学 | Method for manufacturing wooden beam slab |
| CN104890065A (en) * | 2015-06-16 | 2015-09-09 | 凤阳九龙新型建材有限公司 | Preparation method for preservative plywood |
| CN106827109A (en) * | 2016-12-28 | 2017-06-13 | 中国林业科学研究院木材工业研究所 | A kind of glued board and preparation method thereof |
| CN106945134A (en) * | 2017-04-28 | 2017-07-14 | 南京市产品质量监督检验院 | A kind of long-acting slow release type preserving timber and preparation method thereof |
| CN107756579A (en) * | 2017-09-27 | 2018-03-06 | 柳州隆泰竹业有限公司 | A kind of production method of anti-corrosion bamboo flooring |
| CN108214730A (en) * | 2018-02-09 | 2018-06-29 | 广西艾尚嘉家居有限公司 | A kind of production method of environmental protection five-ply board |
| CN108274555A (en) * | 2018-02-08 | 2018-07-13 | 福建和其祖林业科技有限公司 | The preparation method of modified phenolic resin adhesive and its preparation method and application, bamboo-wood plyboard |
| CN108515585A (en) * | 2018-03-23 | 2018-09-11 | 广西艾尚嘉家居有限公司 | A kind of glued board and its processing method of moisture resistant |
| CN109203122A (en) * | 2018-09-25 | 2019-01-15 | 贵州木源乐器制造有限公司 | A kind of five-ply board and preparation method thereof |
| CN109366637A (en) * | 2018-11-23 | 2019-02-22 | 浙江农林大学 | Bamboo veneer, Bamboo veneer glued board and their preparation method |
| CN110978178A (en) * | 2019-12-04 | 2020-04-10 | 靖江国林木业有限公司 | Method for making anticorrosive log |
| CN111805640A (en) * | 2020-07-15 | 2020-10-23 | 湖北天欣木结构房制造有限公司 | Processing method of high-performance oriented structural slab composite board and product |
| CN113650119A (en) * | 2021-08-13 | 2021-11-16 | 福建省佰嘉木业有限公司 | Plywood manufacturing process based on eucalyptus grandis logs |
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