CN102218759A - Method for manufacturing plywood - Google Patents
Method for manufacturing plywood Download PDFInfo
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- CN102218759A CN102218759A CN2011101511424A CN201110151142A CN102218759A CN 102218759 A CN102218759 A CN 102218759A CN 2011101511424 A CN2011101511424 A CN 2011101511424A CN 201110151142 A CN201110151142 A CN 201110151142A CN 102218759 A CN102218759 A CN 102218759A
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- Prior art keywords
- veneer
- pressing
- hot pressing
- glued board
- present
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a method for manufacturing a plywood which is formed by laminating more than two veneers. The method comprises the following steps: evenly laying plastic films between two adjacent veneers, and carrying out cold pressing after hot pressing, wherein the interval time of the cold pressing and the hot pressing is within 20 minutes. The method disclosed by the invention has the following advantages: (1) compared with a method of which the interval time is not in the range of the method disclosed by the invention, the water resistance, the dryness resistance and the fastness of the plywood can be obviously improved under the situation that other conditions are same; (2) under the condition of requiring the same effect, compared with the method that the interval time is not in the range of the method disclosed by the invention, the method has lower requirement on parameters in the manufacture process; and (3) the method disclosed by the invention is simple, does not have special requirement on equipment and is very suitable for the industrial large-scale production of the plywood.
Description
Technical field
The present invention relates to a kind of method of making glued board.
Background technology
Decorative panel is commonly called as panel, is that the accurate slicing of solid wood plate is become thickness is micro veneer skin more than the 0.1mm, is base material with clamping plate, manufactures the dalle with single or double decoration function that forms through adhesion process.
Formaldehyde has strong adhesion, also have the hardness of strengthening sheet material and insect protected, corrosion-resistant function, the binder of therefore existing sheet material mostly is to be the resinae binder of main component with formaldehyde, under the acting in conjunction of ultraviolet ray, temperature, sunlight, these binders decompose in a large number, free formaldehyde is also just in indoor migration everywhere, the environmental radiation towards periphery that the residual formaldehyde that has neither part nor lot in chemical reaction can be gradually in the sheet material, and this is the main body that forms formaldehyde in indoor air.
Formaldehyde is irritative gas colourless, that have overpowering odor, the aqueous solution common name formalin of its 35%-40%.Formaldehyde is the magma poisonous substance, can and combined with protein, suck high-concentration formaldehyde after, the serious stimulation of respiratory tract and oedema, eye shouting pain, headache can appear, also bronchial astehma can take place.Skin directly contacts formaldehyde, can cause dermatitis, color spot, necrosis.Often suck a small amount of formaldehyde, can cause slow poisoning, mucous hyperemia, skin irritatin disease, allergic dermatitis, nail angling and fragility, nail matrix finger tip pain etc. occur.Constitutional symptom have headache, weak, that stomach is received is poor, palpitaition, have a sleepless night, lose weight and vegetative nervous disorder etc.
Because formaldehyde is extremely harmful to health, in recent years, the researcher all was devoted to seek the preparation method of effective formaldehyde-free decorative board.
For example, Granted publication number discloses a kind of formaldehydeless fire-proof and water-proof decorative panel for the Chinese invention patent of CN1128186C, this decorative panel is primary raw material with the plant fiber powder,, is prepared from according to certain technology as adhesive with the polyvinyl chloride resin powder that do not contain formaldehyde.Because this decorative panel is to be primary raw material with the plant fiber powder rather than to be raw material with the plank, so this patent does not solve the ubiquitous formaldehyde pollution problem of traditional decorative panel (being main component with the solid wood plate).
And for example, Granted publication number discloses a kind of environment protection type composite decorative plate for the Chinese invention patent of CN1164420C, this composite decorating board adopts nontoxic white glues as adhesive, its defective is that this composite decorating board still contains a certain amount of formaldehyde (content of formaldehyde reaches 0.81mg/L), in addition, also there are problems such as preparation cost height, complicated process of preparation in this decorative panel, has to be overcome.Also have numerous these type of researchs, do not exemplify one by one at this.
On the basis of above-mentioned research, CN101554741A discloses a kind of preparation method of formaldehyde-free decorative board, and this method is then colded pressing after the hot pressing by spread plastic sheeting uniformly between every two adjacent plates of solid wood, obtains decorative panel.Preferred embodiment, cold pressing after the first hot pressing, the temperature of hot pressing is 120-140 ℃, and the time of hot pressing is 5-45min; The temperature of colding pressing is 30-40 ℃, colds pressing and the pressure of hot pressing is the 100-600 ton, and the time of colding pressing is 5-45min; The decorative panel that finally obtains soaks in 65-75 ℃ water and did not ftracture in 30 hours, and dries and also do not see cracking in 3 hours.Though this method has effectively been improved the resistance to water and the dry strength of formaldehyde-free decorative board, yet further raising along with current social life quality, people also require more and more higher to every performance of decorative panel, therefore, the preparation method that continues to look for the decorative panel of the better formaldehydeless releases of multinomial performance such as better resistance to water and dry strength also will become more and more severeer problem.
Summary of the invention
The purpose of this invention is to provide a kind of resistance to water, dry strength and fastness and better make the method for glued board.
The invention provides a kind of method of making glued board, described glued board is overlayed by plural veneer and forms, and this method comprises: spread plastic foil between two adjacent veneers, cold pressing after the first hot pressing; Wherein, hot pressing and blanking time of colding pressing are in the 20min.
Method of the present invention has following advantage: (1) and blanking time, within the scope of the invention method was not compared, can be (for example in other condition, plastic foil consumption, hot pressing and the temperature and time of colding pressing) under the identical situation, improve resistance to water, dry strength and the fastness of the glued board that obtains significantly; (2): under the situation of needs acquisition same effect (as essentially identical resistance to water, dry strength and fastness), with blanking time not within the scope of the invention method compare, its requirement lower (for example, the minimizing of plastic foil consumption, hot pressing and time of colding pressing shorten) to the parameter in the manufacturing process; (3) method of the present invention is simple, and equipment is not had specific (special) requirements, is fit to very much the suitability for industrialized production of large-scale glued board.
The specific embodiment
According to the present invention, the method for making glued board of the present invention comprises: spread plastic foil between two adjacent veneers, cold pressing after the first hot pressing; Wherein, hot pressing and blanking time of colding pressing are in the 20min.
According to the present invention, can realize purpose of the present invention the blanking time that needs only control hot pressing among the present invention and cold pressing in aforementioned range of the present invention, and on this basis in order further to improve every performance indications of glued board, the present inventor finds, can be 0.1-15min by the blanking time of controlling described hot pressing and colding pressing, more preferably 1-10min realizes.
Among the present invention, optional wider range of the described hot pressing and the condition of colding pressing, it can be adjusted according to concrete needs.Under the preferable case, the condition of described hot pressing comprises: the temperature of hot pressing is more than 120 ℃, is preferably 150-240 ℃; With respect to every square metre veneer, pressure is more than 16 tons, is preferably the 32-340 ton.Described condition of colding pressing comprises: the temperature of colding pressing is below 90 ℃, is preferably 0-75 ℃; With respect to every square metre veneer, pressure is more than 16 tons, is preferably the 25-405 ton.Among the present invention, the temperature of described hot pressing and the temperature of colding pressing are meant the surface temperature of implementing the parts that hot pressing and the machine of colding pressing such as trigger squeeze contact with veneer.
Optional wider range of hot pressing described in the present invention and time of colding pressing, specifically can select, under the preferable case, with respect to the veneer of 1 millimeter thickness according to the gross thickness of all plies that will press, the time of described hot pressing is 1-5 minute, is preferably 1.5-3 minute; The described time of colding pressing is 1-5 minute, is preferably 1.5-3 minute.
Among the present invention, optional wider range of the consumption of described plastic foil, under the preferable case, the consumption of described plastic foil is 50g/m
2More than, be preferably 70-200g/m
2Above-mentioned consumption is meant the cemented surface with respect to every square metre, and the consumption of plastic foil is more than the 50g, to be preferably 70-200g.For adjacent two veneers of mutual gummed, cemented surface is meant the surface of wherein surperficial less veneer.
Among the present invention, described plastic foil can be the various plastic foils of prior art, under the preferable case, contain in polyethylene, polyvinyl chloride, polypropylene and the ethylene-propylene copolymers one or more in the constituent of described plastic foil, preferred especially described plastic foil contains one or more in polyethylene, polypropylene and the ethylene-propylene copolymers.The formaldehyde pollution problem of using above-mentioned plastic foil to solve to use existing adhesive such as Lauxite to bring as adhesive.
Among the present invention, optional wider range of the thickness of described plastic foil, under the preferable case, the thickness of described plastic foil is 0.05-1.2mm, is preferably 0.07-0.12mm.
The present invention does not have specific (special) requirements to the meltbility of described plastic foil, but the melt temperature of preferred described plastic foil is 120-240 ℃.
Among the present invention, described veneer can be this area various veneers commonly used, and under the preferable case, described veneer is that plates of solid wood, wood are moulded one or more in veneer and the lifeless thing veneer, and preferred especially described veneer is a plates of solid wood.Wood is moulded veneer and is referred to the veneer that is mixed and made into by plastics and wood powder described in the present invention, and described lifeless thing veneer refers to the veneer that is mixed and made into by gypsum or cement and wood powder.
The present invention does not have specific (special) requirements to the material of described plates of solid wood, for example can be poplar, Eucalyptus or pine.
The present invention does not have specific (special) requirements to the thickness of described veneer, and under the preferable case, the thickness of described veneer is 0.02-0.5cm, is preferably 0.1-0.2cm.
The present invention does not have specific (special) requirements to the number of plies of described veneer, can select according to concrete needs, and generally speaking, the number of plies of described veneer can be the 2-50 layer, is preferably the 3-20 layer.
Among the present invention, optional wider range of the moisture content of described veneer, under the preferable case, with total restatement of veneer, the water content of described veneer is in the 5 weight %, is preferably 1-4 weight %.
The present invention does not have specific (special) requirements to realizing hot pressing and the mode of colding pressing, for example can realize colding pressing after the first hot pressing by trigger squeeze, also veneer to be pressed can be put into two smooth being divided between the metal form (or backing plate) up and down, two metal forms (or backing plate) (can adopt various mechanical systems to lock with the plank locking up and down, for example can adopt modes such as card, holdfast, last bolt), exert pressure between two templates (or backing plate) up and down and realize colding pressing after the first hot pressing.
Among the present invention, when colding pressing after adopting aforementioned back kind mode to realize first hot pressing, method of the present invention is generally further comprising the steps of: remove template (or backing plate).
The present invention does not have specific (special) requirements to the kind of described metal form, and under the preferable case, described metal form is a steel plate.
The present invention does not have specific (special) requirements to the kind of described backing plate, and under the preferable case, described backing plate is aluminium sheet or corrosion resistant plate.
It is adhesive that the present invention adopts cheap plastic foil, and production cost is low, and technology is simple and direct, according to country the examination criteria of MULTILAYER COMPOSITE plank is detected, and every performance of the glued board of various embodiments of the present invention made all meets national standard.
Can be used as floor, door-plate, skirting board, furniture-plates, cabinet plate etc. after the surface of the glued board of made of the present invention is stained with solid wood wood skin, also can be used for indoor decoration sheet material.
Further describe the present invention below in conjunction with specific embodiment, advantage of the present invention and characteristics will be more clear along with description.But these embodiment only are exemplary, scope of the present invention are not constituted any restriction.It will be understood by those skilled in the art that and down can make amendment or replace without departing from the spirit and scope of the present invention, but these modifications and replacing all fall within the scope of protection of the present invention the details of technical solution of the present invention and form.
Embodiment 1
3 of plates of solid wood are board using poplar board, and the thickness of veneer is 0.1 centimetre, the veneer water content is 1 weight %, spread polypropylene plastic film (thickness 0.07mm, melt temperature is 160 ℃) between two adjacent plates of solid wood uniformly, the consumption of polypropylene plastic film is 70g/m
2(Linyi, Shandong woodworking machinery factory produces, and processing dimension: 2440 * 1220mm) carry out pressing, is 100 tons at pressure earlier to adopt trigger squeeze, temperature is hot pressing 8 minutes under 150 ℃ the condition, behind the 0.1min, is 600 tons at pressure at interval, temperature is to cold pressing 6 minutes under 10 ℃ the condition, promptly gets glued board.
After testing, the glued board of present embodiment made soaks in 100 ℃ boiling water and did not ftracture in 12 hours, does not also see at 120 ℃ of following continuous dryings that cracking phenomena was arranged in 12 hours again.
According to country the examination criteria of MULTILAYER COMPOSITE plank is detected, every performance of the glued board of present embodiment made all meets national standard.
Comparative Examples 1
Make glued board according to the method for embodiment 1, hot pressing that different is and cold pressing between blanking time be 21min, obtain glued board.
After testing, the glued board that making obtains soaks 30 hours cementing layers and does not ftracture in 75 ℃ hot water, and continuous drying was not seen in 3.5 hours yet again cracking phenomena; Soak in 100 ℃ boiling water that cementing layer has cracking phenomena after 10 hours.
Comparative Examples 2
Make glued board according to the method for embodiment 1, hot pressing that different is and cold pressing between blanking time be 30min, obtain glued board.
After testing, the glued board that making obtains soaks in 68 ℃ hot water and did not ftracture in 30 hours, dries and does not also see cracking in 3 hours; In 100 ℃ boiling water, soak after 10 hours cracking phenomena is arranged.
Embodiment 2
Make glued board according to the method for embodiment 1, hot pressing that different is and cold pressing between blanking time be 16min, obtain glued board.
After testing, the glued board of present embodiment made soaks in 95 ℃ boiling water and did not ftracture in 30 hours, dries down at 120 ℃ and does not see also that cracking phenomena was arranged in 11 hours; Soak in 100 ℃ boiling water that cementing layer has cracking phenomena after 12 hours.
According to country the examination criteria of MULTILAYER COMPOSITE plank is detected, every performance of the glued board of present embodiment made all meets national standard.
Embodiment 3
Make glued board according to the method for embodiment 1, hot pressing that different is and cold pressing between blanking time be 18min, obtain glued board.
After testing, the glued board of present embodiment made soaks in 90 ℃ boiling water and did not ftracture in 30 hours, dries down at 120 ℃ and does not see also that cracking phenomena was arranged in 11 hours; Soak in 100 ℃ boiling water that cementing layer has cracking phenomena after 12 hours.
According to country the examination criteria of MULTILAYER COMPOSITE plank is detected, every performance of the glued board of present embodiment made all meets national standard.
Embodiment 4
6 of plates of solid wood, be the Eucalyptus veneer, the thickness of veneer is 0.15 centimetre, the veneer water content is 2 weight %, plastic foil (the thickness 0.07mm that makes by ethylene-propylene copolymers will be spread between every two plates of solid wood that face mutually uniformly, melt temperature is 180 ℃), the consumption of plastic sheeting is 100g/m
2The employing trigger squeeze (Linyi, Shandong woodworking machinery factory, processing dimension: 2440 * 1220mm) carry out pressing, are 1000 tons at pressure earlier, temperature is hot pressing 13.5 minutes under 240 ℃ the condition, behind the 5min, is 80 tons at pressure at interval, temperature is to cold pressing 27 minutes under 0 ℃ the condition, promptly gets glued board.
After testing, the glued board of present embodiment made soaks in 100 ℃ boiling water and did not ftracture in 12 hours, does not also see at 120 ℃ of following continuous dryings that cracking phenomena was arranged in 12 hours again.
According to country the examination criteria of MULTILAYER COMPOSITE plank is detected, every performance of the glued board of present embodiment made all meets national standard.
Embodiment 5
11 of plates of solid wood, 5 veneers are Eucalyptus veneer (water content is 2 weight %) in the plates of solid wood, 6 veneers are board using poplar board (water content is 1 weight %), board using poplar board and Eucalyptus veneer interfolded, the thickness of veneer is 0.2 centimetre, to spread polyethylene plastic film (thickness 0.1mm, melt temperature is 190 ℃) between every two plates of solid wood that face mutually uniformly, the consumption of plastic sheeting is 160g/m
2The employing trigger squeeze (Linyi, Shandong woodworking machinery factory, processing dimension: 2440 * 1220mm) carry out pressing, are 600 tons at pressure earlier, temperature is hot pressing 60 minutes under 160 ℃ the condition, behind the 10min, is 1200 tons at pressure at interval, temperature is to cold pressing 33 minutes under 75 ℃ the condition, promptly gets glued board.
After testing, the glued board of present embodiment made soaks in 100 ℃ boiling water and did not ftracture in 12 hours, does not also see at 120 ℃ of following continuous dryings that cracking phenomena was arranged in 12 hours again.
According to country the examination criteria of MULTILAYER COMPOSITE plank is detected, every performance of the glued board of present embodiment made all meets national standard.
Embodiment 6
3 of plates of solid wood are respectively board using poplar board (water content is 1 weight %), Eucalyptus veneer (water content is 2 weight %), pine veneer (water content is 4 weight %), and the thickness of veneer is 0.15cm; Spread polypropylene plastic film (thickness 0.12mm, melt temperature is 240 ℃) with needing uniformly between the two every adjacent plates of solid wood of pressing, the consumption of plastic foil is 200g/m
23 planks that added plastic foil to be laminated are put into two smooth steel plate (processing dimensions: between 2440 * 1220mm) up and down that are divided into, with up and down two steel plates and plank employing locked with bolts to be laminated, it is 200 tons at pressure earlier, temperature is hot pressing 7 minutes under 170 ℃ the condition, behind the 15min, be 300 tons at pressure at interval, temperature is to cold pressing 10 minutes under 30 ℃ the condition, remove steel plate again, promptly get glued board.
After testing, the glued board of present embodiment made soaks in 100 ℃ boiling water and did not ftracture in 12 hours, does not also see at 120 ℃ of following continuous dryings that cracking phenomena was arranged in 12 hours again.
According to country the examination criteria of MULTILAYER COMPOSITE plank is detected, every performance of the glued board of present embodiment made all meets national standard.
Embodiment 7
Make glued board according to the method for embodiment 6, hot pressing that different is and cold pressing between blanking time be 10min, obtain glued board.
After testing, the glued board of present embodiment made soaks in 100 ℃ boiling water and did not ftracture in 30 hours, dries down at 120 ℃ and does not see also that cracking phenomena was arranged in 25 hours.
According to country the examination criteria of MULTILAYER COMPOSITE plank is detected, every performance of the glued board of present embodiment made all meets national standard.
Embodiment 8
Make glued board according to the method for embodiment 6, hot pressing that different is and cold pressing between blanking time be 1min, obtain glued board.
After testing, the glued board of present embodiment made soaks in 100 ℃ boiling water and did not ftracture in 28 hours, dries down at 120 ℃ and does not see also that cracking phenomena was arranged in 20 hours.
According to country the examination criteria of MULTILAYER COMPOSITE plank is detected, every performance of the glued board of present embodiment made all meets national standard.
Embodiment 9
3 of plates of solid wood, be board using poplar board (moisture content is 5 weight %), the thickness of veneer is 0.3cm, spreads sealed polyethylene plastic (thickness 1.2mm between two adjacent plates of solid wood uniformly, melt temperature is 180 ℃), the consumption of sealed polyethylene plastic is 50g/m
2(Linyi, Shandong woodworking machinery factory produces, and processing dimension: 2440 * 1220mm) carry out pressing, is 60 tons at pressure earlier to adopt trigger squeeze, temperature is hot pressing 1 minute under 120 ℃ the condition, behind the 0.1min, is 60 tons at pressure at interval, temperature is to cold pressing 2 minutes under 80 ℃ the condition, promptly gets glued board.
After testing, the glued board of present embodiment made soaks in 75 ℃ hot water and did not ftracture in 32 hours, dries and does not also see cracking in 3 hours.
According to country the examination criteria of MULTILAYER COMPOSITE plank is detected, every performance of the glued board of present embodiment made all meets national standard.
Comparative Examples 3
Make glued board according to the method for embodiment 9, hot pressing that different is and cold pressing between blanking time be 21min, obtain glued board.
After testing, making the glued board obtain soaks in 75 ℃ hot water and after 32 hours cracking phenomena is arranged.
This shows that the glued board that the glued board that the present invention obtains obtains than Comparative Examples 1-3 has the bonding strength advantage.
Claims (10)
1. method of making glued board, described glued board is overlayed by plural veneer and forms, and this method comprises: spread plastic foil between two adjacent veneers, cold pressing after the first hot pressing; It is characterized in that hot pressing and the blanking time of colding pressing are in the 20min.
2. method according to claim 1, wherein, described hot pressing and the blanking time of colding pressing are 0.1-15min, are preferably 1-10min.
3. method according to claim 1, wherein, the condition of described hot pressing comprises: the temperature of hot pressing is more than 120 ℃, is preferably 150-240 ℃; With respect to every square metre veneer, pressure is more than 16 tons, is preferably the 32-340 ton.
4. method according to claim 1, wherein, described condition of colding pressing comprises: the temperature of colding pressing is below 90 ℃, is preferably 0-75 ℃; With respect to every square metre veneer, pressure is more than 16 tons, is preferably the 25-405 ton.
5. according to any described method among the claim 1-4, wherein, with respect to the veneer of 1 millimeter thickness, the time of described hot pressing is 1-5 minute, is preferably 1.5-3 minute; The described time of colding pressing is 1-5 minute, is preferably 1.5-3 minute.
6. method according to claim 1, wherein, the consumption of described plastic foil is 50g/m
2More than, be preferably 70-200g/m
2
7. method according to claim 1, wherein, contain in polyethylene, polyvinyl chloride, polypropylene and the ethylene-propylene copolymers one or more in the constituent of described plastic foil, preferably contain in polyethylene, polypropylene and the ethylene-propylene copolymers one or more.
8. method according to claim 1, wherein, described veneer is that plates of solid wood, wood are moulded one or more in veneer and the lifeless thing veneer, is preferably plates of solid wood; The thickness of described veneer is 0.02-0.5cm, is preferably 0.1-0.2cm.
9. method according to claim 1, wherein, with total restatement of veneer, the water content of described veneer is in the 5 weight %, is preferably 1-4 weight %.
10. method according to claim 1, wherein, the number of plies of described veneer is the 2-50 layer, is preferably the 3-20 layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101511424A CN102218759A (en) | 2011-06-07 | 2011-06-07 | Method for manufacturing plywood |
| PCT/CN2011/076891 WO2012167468A1 (en) | 2011-06-07 | 2011-07-06 | Method for manufacturing plywood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101511424A CN102218759A (en) | 2011-06-07 | 2011-06-07 | Method for manufacturing plywood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102218759A true CN102218759A (en) | 2011-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101511424A Pending CN102218759A (en) | 2011-06-07 | 2011-06-07 | Method for manufacturing plywood |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102218759A (en) |
| WO (1) | WO2012167468A1 (en) |
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