CN102320067B - Method for producing dyeing laminated veneer lumber of poplar via cold pressing method - Google Patents
Method for producing dyeing laminated veneer lumber of poplar via cold pressing method Download PDFInfo
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- CN102320067B CN102320067B CN201110246112.1A CN201110246112A CN102320067B CN 102320067 B CN102320067 B CN 102320067B CN 201110246112 A CN201110246112 A CN 201110246112A CN 102320067 B CN102320067 B CN 102320067B
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- poplar
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Abstract
A method for producing a dyeing laminated veneer lumber of a poplar via a cold pressing method belongs to the panel processing technical field, and comprises the following technical steps of selecting the poplar veneer, dyeing the veneer, drying the veneer, gluing, assembling blank, pre-pressing, cold-pressing and fixing, and solidifying and maintaining. With reasonable design, the invention uses the rotary-cut veneer of a fast-growing wood such as the poplar and the like to manufacture an artificial panel via the methods of dyeing, cold-pressing and fixing, maintaining and the like, wherein a texture and a color of the artificial panel are similar with those of a natural black redwood. Furthermore, the invention makes better use of small woods and inferior woods, greatly improves additional value of the fast-growing wood, alleviates the contradiction of natural precious wood shortage in China, and satisfies the industrial development direction of national energy-saving and environment-friendly new materials. And in the invention, safety of a dyeing agent satisfies the national norms, light fastness is more than 4. Products manufactured according to the invention have the uniform color and the clear texture, and chroma and the texture of the products are similar with those of the precious wood such as the redwood and the like.
Description
Technical field
The invention belongs to technical field of board processing, be specifically related to a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method.
Background technology
Natural precious timber is the flawless finish material, by people are liked, although 20000～100000 yuan/m of its price
3, still be subject to the welcome in market, but that its resource is just becoming is fewer and feweri.The application of wood-based plate can make 1m
3timber replace 3m
3timber, at aspects such as capital construction, interior decoration, furniture, traffic, water conservancy constructions, wood-based plate all has ample scope for one's abilities in recent years, particularly along with the rise of fitting-up craze, wood-based plate has become indispensable key player.According to updated statistics, within 2009, China's wood-based plate output reaches 1.1547 hundred million m
3, fiberboard 3430.43 ten thousand m wherein
3, glued board 4451.24 ten thousand m
3.A large amount of wood-based plates needs the veneer of high-quality timber to carry out faced deorative.Wood staining is to make the particularly effective ways of fast-growing broadleaf raising added value of low-grade wood, is timber new and high technology manufacturing process.But improper due to processing method in the prior art, adopt fast growing wood dyeing etc. not manufacture the texture of the precious timber such as redwood and the effect of color and luster, and energy consumption is quite high in process.
Summary of the invention
The problem existed for prior art, the object of the invention is to the technical scheme that design provides a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, and the method energy consumption is low and sheet material fidelity that obtain is high.
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method is characterized in that comprising following processing step:
1) choose board using poplar board: choose the board using poplar board that thickness is 0.7～1mm, standby;
2) single-plate dyeing: in soft water, by the weight of soft water, add 0.1～1% water-soluble coloring agent, 0.001～0.1% bleeding agent, 0.001～0.1% levelling agent and 0.01～0.1% accelerant to be mixed with dye liquor, then the speed by 1～5 ℃/min is heated to 60～90 ℃, under pressure 0.05～0.5Mpa, dye 3～5 hours;
3) veneer drying: dry the veneers to moisture content 10～12%;
4) gluing: by containing the muf resin glue of solids content 55～62% 45～55 parts (weight portion), milky white adhesive 2～8 parts (weight portion), filler 2～8 parts (weight portion) and curing agent 0.2～0.6 part (weight portion), being joined glue, then board using poplar board is carried out to double spread;
5) assembly: the veneer that will be coated with glue carries out assembly;
6) precompressed: in the assembly process, every 15～25 make sheet material precuring once, and preload pressure is 12～14 kg/cm
2, precompressed 2～8 minutes;
7) cold pressing fixing: when the slab that is pre-stressed to by 500～1000 veneers, at pressure 14～20 kg/cm
2under by mould, compress fixingly, described mold shape is determined according to the pattern of analog equipment;
8) curing conservation: slab obtained above carried out cold curing more than 7 days under 25～35 ℃.
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, is characterized in that described step 2) in by the weight of soft water, add 0.3～0.8% water-soluble coloring agent, 0.008～0.08% bleeding agent, 0.008～0.08% levelling agent and 0.02～0.08% accelerant to be mixed with dye liquor.
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, is characterized in that described step 2) in by the weight of soft water, add 0.4～0.6% water-soluble coloring agent, 0.01～0.05% bleeding agent, 0.01～0.05% levelling agent and 0.04～0.06% accelerant to be mixed with dye liquor.
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, is characterized in that described step 2) in be heated to 70～80 ℃ by the speed of 2～4 ℃/min, under pressure 0.08～0.3Mpa, dye 3.5～4 hours.
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, is characterized in that in described step 3) adopting natural drying or carry out the rapid artificial drying of high temperature under 140～180 ℃.
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, is characterized in that in described step 4) being joined glue by the muf resin glue containing solids content 55～62% 48～52 parts (weight portion), milky white adhesive 4～6 parts (weight portion), filler 4～6 parts (weight portion) and curing agent 0.3～0.5 part (weight portion).
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, is characterized in that the filler described in described step 4) is the inert solid powder, and described curing agent is acidic materials.
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, is characterized in that in described step 4), glue-spread is 145～155 g/m
2.
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, is characterized in that in described step 7) at pressure 16～18kg/cm
2under by mould, compress fixing.
Described a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, is characterized in that in described step 8) carrying out cold curing more than 7 days under 27～32 ℃.
Above-mentioned a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method, reasonable in design, utilize the rotary cut venner of the fast growing wood such as poplar, by means such as dyeing, fixing, the maintenances of colding pressing, manufacture the texture color and luster artificial board similar to natural black redwood texture color and luster.And the large use of small wood of the present invention, the excellent use of bad material, can improve the added value of fast growing wood greatly, alleviates the contradiction of the natural precious timber shortage of China, meets the industrial development direction of national energy-saving environmental friendly material.And coloring agent security of the present invention meets national regulation, and light fastness reaches more than 4.Product colour is even, and clean mark approaches precious timber colourity and the textures such as redwood.
The specific embodiment
Further illustrate the present invention below in conjunction with specific embodiment.
Embodiment 1
1) choose board using poplar board: choose the board using poplar board that thickness is 0.7mm, depending on product purpose, timber variety and manufacturing technique requirent.The edge of a knife is sharp, even thickness.Veneer is decocted and is cut width depending on the requirement of product and the width of platen.To defective veneer, as irregular as thickness in this process, with being rejected of the defects such as knot, bark pocket, rotten, variable color.
2) single-plate dyeing: by board using poplar board by dying required color, in soft water, by the weight of soft water, add 0.1% water-soluble coloring agent (as coloring agent 50805A, 50805D, 50805E etc.), 0.001% bleeding agent 50805K, 0.001% levelling agent 50805M and 0.01% accelerant 50805H to be mixed with dye liquor, then the speed by 2 ℃/min is heated to 80 ℃, under pressure 0.1Mpa, dye 4 hours, during dyeing, keep dye liquor to flow.
3) veneer drying: dry the veneers to moisture content 11%.The defects such as veneer is excessively wet, can cause hot pressing time long, and bonding strength is low, and product ftractures, mouldy.The veneer overdrying, in the gluing process, veneer is frangible, to assembly, causes difficulty, causes veneer overlapping, affects texture and intensity.Natural drying or the artificial high temperature and rapid drying of dry employing carries out drying under 160 ℃ while adopting artificial drying.
4) gluing: adhesive used must be through allotment, and containing adhesive, curing agent, filler etc., its color will approach with the color of veneer.Normally used adhesive is environment-friendly type muf resin and milky white adhesive etc., and the curing agent in the cold-press process adhesive will be adjusted to the right place.Use the glue spreader double spread, glue-spread 150g/m
2, adhesive is obtained by following raw material preparation: muf resin glue (solids content 59%) 50kg, milky white adhesive 5kg, filler 5kg and curing agent 0.4kg.The adhesive effect is important to the fixed pole of colding pressing of back.Described filler is the inert solid powder, as wood powder, starch, titanium dioxide etc.; Described curing agent is acidic materials, as weak base or strong acid weak base salts such as ammonium chloride, hydrochloric acid, oxalic acid.
5) assembly: by sized veneer assembly on workbench, veneer wants cocurrent and parallel to pile up, and termination and both sides alignment are noticed that the benefit of broken veneer is spelled, mended glue.If need the texture difference of product, can consider the single plate interactive of different depth colors, discharge in order.
6) precompressed: for avoiding the overlapping generation texture of veneer distortion in compression process, in the assembly process, every 20 make sheet material precuring once, and give certain initial strength.Pressure 13kg/cm
2, squeeze time 5 minutes.
7) cold pressing fixing: when the slab that is pre-stressed to by 800 veneers, by mould, compress fixing.The shape of mould is determined according to the pattern of analog equipment, as straight burr, mountain line, burl etc.The effect of this process is under certain pressure, guarantees the abundant gummed of product, gives product with enough intensity.At pressure at 18kg/cm
2under condition, formboard fastening.
8) curing conservation: carry out cold curing 30 ℃ of condition underlyings, the chemical catalysis cold curing time is more than 7 days.
9) producing material encapsulation: as required, by the different angles producing material, finished product thickness of slab 5cm, 10cm etc.According to product color, texture, defect situation, the examination and test of products is graded.Adopt water-repellent paint, the sealing termination, prevent cracking.The packing warehouse-in.
The poplar colored single palte laminated timber finally obtained, color is even, clean mark, approach precious timber colourity and the textures such as redwood, light fastness reaches more than 4, and in process, adopts cold-press method to reach energy-saving effect, with general processing method, compares energy-conservation more than 25%.
Adopt board using poplar board thickness 0.8mm, 0.9mm or 1mm in embodiment 1 step 1);
Step 2) in, adopt in soft water weight by soft water to add 0.5% water-soluble coloring agent, 0.005% bleeding agent 50805K, 0.005% levelling agent 50805M and 0.03% accelerant 50805H are mixed with dye liquor, or add 0.8% water-soluble coloring agent by the weight of soft water in soft water, 0.01% bleeding agent 50805K, 0.01% levelling agent 50805M and 0.05% accelerant 50805H are mixed with dye liquor, or add 1% water-soluble coloring agent by the weight of soft water in soft water, 0.05% bleeding agent 50805K, 0.05% levelling agent 50805M and 0.08% accelerant 50805H are mixed with dye liquor, or add 1% water-soluble coloring agent by the weight of soft water in soft water, 0.1% bleeding agent 50805K, 0.1% levelling agent 50805M and 0.1% accelerant 50805H are mixed with dye liquor, and dyeing condition adopts by 1 ℃/min, 3 ℃/min, the speed of 4 ℃/min or 5 ℃/min is heated to 60 ℃, 70 ℃ or 90 ℃, at pressure 0.05Mpa, 0.08Mpa, 0.2, under Mpa or 0.5 Mpa, dye 3 or 5 hours,
Adopt and be dried to moisture content 10% or 12% under 140 ℃, 160 ℃ or 180 ℃ in step 3);
Adopt the muf resin glue that solids content is 55%, 56% or 62% in step 4), and press muf resin glue 45kg, milky white adhesive 2kg, filler 2kg and curing agent 0.2kg, or muf resin glue 48kg, milky white adhesive 6kg, filler 6kg and curing agent 0.4kg, or muf resin glue 55kg, milky white adhesive 8kg, filler 8kg and curing agent 0.6kg, glue-spread is glue-spread 145g/m
2or 155g/m
2;
Adopt every 15,18,22 or 25 in step 6) and make sheet material precuring once, preload pressure is 12 or 14 kg/cm
2, precompressed 2,4,6 or 8 minutes;
In step 7), adopt when the slab that is pre-stressed to by 500,600,900 or 1000 veneers, at pressure 14,16 or 20 kg/cm
2under by mould, compress fixing;
Adopt and carry out cold curing under 25 ℃, 27 ℃, 32 ℃ or 35 ℃ in step 8), other condition is identical with embodiment 1, and the sheet material finally obtained also can reach the also identical technique effect of embodiment 1.
Claims (5)
1. a method for producing dyeing laminated veneer lumber of poplar via cold pressing method is characterized in that comprising following processing step:
1) choose board using poplar board: choose the board using poplar board that thickness is 0.7～1mm, standby;
2) single-plate dyeing: in soft water, by the weight of soft water, add 0.4～0.6% water-soluble coloring agent, 0.01～0.05% bleeding agent, 0.01～0.05% levelling agent and 0.04～0.06% accelerant to be mixed with dye liquor, then the speed by 2～4 ℃/min is heated to 70～80 ℃, under pressure 0.08～0.3Mpa, dye 3.5～4 hours;
3) veneer drying: dry the veneers to moisture content 10～12%;
4) gluing: by containing the muf resin glue of solids content 55～62% 45～55 parts (weight portion), milky white adhesive 2～8 parts (weight portion), filler 2～8 parts (weight portion) and curing agent 0.2～0.6 part (weight portion), being joined glue, then board using poplar board is carried out to double spread, glue-spread is 145～155 g/m
2;
5) assembly: the veneer that will be coated with glue carries out assembly;
6) precompressed: in the assembly process, every 15～25 make sheet material precuring once, and preload pressure is 12～14 kg/cm
2, precompressed 2～8 minutes;
7) cold pressing fixing: when being pre-stressed to the slab of 500～1000 veneers, at pressure 16～18kg/cm
2under by mould, compress fixingly, described mold shape is determined according to the pattern of analog equipment;
8) curing conservation: the slab obtained was carried out to cold curing more than 7 days under 25～35 ℃.
2. a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method as claimed in claim 1, is characterized in that in described step 3) adopting natural drying or carry out the rapid artificial drying of high temperature under 140～180 ℃.
3. a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method as claimed in claim 1, is characterized in that in described step 4) being joined glue by the muf resin glue containing solids content 55～62% 48～52 parts (weight portion), milky white adhesive 4～6 parts (weight portion), filler 4～6 parts (weight portion) and curing agent 0.3～0.5 part (weight portion).
4. a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method as claimed in claim 1, is characterized in that the filler described in described step 4) is the inert solid powder, and described curing agent is acidic materials.
5. a kind of method for producing dyeing laminated veneer lumber of poplar via cold pressing method as claimed in claim 1, is characterized in that in described step 8) carrying out cold curing more than 7 days under 27～32 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110246112.1A CN102320067B (en) | 2011-08-25 | 2011-08-25 | Method for producing dyeing laminated veneer lumber of poplar via cold pressing method |
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|---|---|---|---|
| CN201110246112.1A CN102320067B (en) | 2011-08-25 | 2011-08-25 | Method for producing dyeing laminated veneer lumber of poplar via cold pressing method |
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| CN102320067B true CN102320067B (en) | 2014-01-08 |
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| CN105034118A (en) * | 2015-06-09 | 2015-11-11 | 亚振家具股份有限公司 | Manufacturing process for non-structural laminated veneer lumber |
| CN107243957A (en) * | 2017-05-06 | 2017-10-13 | 广西大学 | A kind of preparation method for being cold-pressed multilayered wood laminated timber |
| CN112207928B (en) * | 2020-09-28 | 2021-12-17 | 浙江云峰莫干山装饰建材有限公司 | High-color-fastness formaldehyde-free recombined decorative veneer/material and manufacturing method thereof |
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| JPH0751284B2 (en) * | 1990-02-05 | 1995-06-05 | 鹿島建設株式会社 | Manufacturing method of laminated wood |
| JP4051085B2 (en) * | 2001-05-17 | 2008-02-20 | 株式会社名南製作所 | Laminate manufacturing method |
| CN1511683A (en) * | 2002-12-31 | 2004-07-14 | 黑龙江省林产工业研究所 | High efficiency thermal press producing method for square artificial timber of veneers |
| JP4300078B2 (en) * | 2003-09-02 | 2009-07-22 | 株式会社名南製作所 | Laminate production apparatus and laminate production method |
| CN101579880B (en) * | 2009-06-11 | 2010-09-08 | 国家***竹子研究开发中心 | Manufacturing technique of dyeing bamboo filament plate |
| CN101947799B (en) * | 2010-09-02 | 2013-11-06 | 南京林业大学 | Production method of laminated veneer lumber |
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