CN101214678A - Method for producing bamboo fibre artificial board without glue glued adhesion - Google Patents
Method for producing bamboo fibre artificial board without glue glued adhesion Download PDFInfo
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- CN101214678A CN101214678A CNA2007103008698A CN200710300869A CN101214678A CN 101214678 A CN101214678 A CN 101214678A CN A2007103008698 A CNA2007103008698 A CN A2007103008698A CN 200710300869 A CN200710300869 A CN 200710300869A CN 101214678 A CN101214678 A CN 101214678A
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Abstract
The present invention relates to a production method of self-bonding artificial bamboo fibre board, which includes the following technical processes: (1) bamboo particles, (2) high-temperature steam softening, (3) hot grinding, (4) drying, (5) the spraying of additive, (6) the spreading of material, (7) prepressing, (8) hot pressing, (9) the releasing of a board, (10) cooling, and (11) a finished product. Moreover, in the process of high-temperature steam softening, a softening method of gradually increasing temperature and pressure and momentarily decreasing pressure is applied; in the softening method, the bamboo particles with a water ratio less than 18 percent are loaded into a sealable pressure container, the temperature-increasing rate is controlled within 60 DEG C per hour, when the temperature is raised to 130 DEG C, the pressure is controlled at more than 0.4Mpa, and the temperature and the pressure are maintained for over one hour; later, a steam valve is opened, and the pressure is rapidly decreased to zero, and the pressure-decreasing period is controlled within three hundred and sixty seconds. Consequently, the condensation degree of condensed water can be decreased, the discharging quantity of the condensed water and the loss of carbohydrate and lignin degradation products in the discharging process can be reduced, the bamboo fibres can be sufficiently inflated and rapidly separated, the rate is increased, the concentration of free radical is increased, and the high-strength bonding requirement is satisfied.
Description
Technical field
The present invention relates to a kind of production method of bamboo fibre artificial board without glue glued adhesion.
Background technology
The production method of no glue glued adhesion wood-based plate is research already at home and abroad, in Chinese doctorate paper full-text database, in doctorate paper in 2002 " research of the glue-free artificial board's manufacturing process " literary composition that Jin Chunde write by Northeast Forestry University, detailed elaboration no glue glued adhesion wood-based plate manufacturing process, and the document of quoting, especially the no glue glued adhesion wood-based plate that utilizes timber to make, be widely used in producing, main production method is: pulverizings → high-temperature steam softens → defibrator process and doping → oven dry → stone → precompressed → hot pressing → unload plate → cooling → finished product; But very not clear and definite proposition utilizes bamboo processing not have the glue glued adhesion wood-based plate in this paper, Primary Study to the glueless bamboo flakeboard has only been proposed, its test method is: particle → screening → activation → damping → mat formation → precompressed → hot pressing → saw limit → finished product, and this method, in this paper, also point out, by this method, limit portion at the back slab of mating formation is easy to be scattered, substantially there is not the situation of interweaving between the particle of slab inside, the performance of the plate after therefore influencing into the plate effect to a great extent and becoming plate.Obviously, this can to cause into behind the plate intensity of sheet material low.If be not applied to bamboo wood fully and above-mentioned timber manufacturing is had glue glued adhesion Wood-based Panel Production method, also there is improper part, sweeping rate as bamboo fibre is low, the number of free radical of bamboo fibre is low, do not meet the gummed requirement, reason is that density, hardness, fiber bundle structure and the eucaryotic cell structure of bamboo fibre all have very big difference and different with timber.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can improve sweeping of bamboo fibre rate and number of free radical, reach the production method of the bamboo fibre artificial board without glue glued adhesion of high strength glue performance.
The technical scheme that the present invention takes is: a kind of production method of bamboo fibre artificial board without glue glued adhesion, comprise bamboo crushed aggregates → high-temperature steam softening → defibrator process → oven dry → stone → precompressed → hot pressing → unload plate → technologies such as cooling → finished product, it is characterized in that after oven dry, spraying additive.
Described high-temperature steam is softening to be to adopt the softening method of increasing temperature and pressure and moment step-down gradually.
The described employing softening method of increasing temperature and pressure and moment step-down gradually is that the bamboo particle is put in the sealable pressure vessel, and programming rate is controlled in 60 ℃/hour, and when temperature rises to 130 ℃, pressure is controlled at more than the 0.4Mpa, and heat-insulation pressure keeping is more than 1 hour; Afterwards, open steam escape valve and be depressurized to zero fast, the step-down time was controlled in 360 seconds.
Described bamboo crushed aggregates should keep moisture content below 18%.
Adopt the inventive method, the one, because the bamboo particle is dried to moisture content below 18%, the bamboo particle can be absorbed in the condensed water that steam produced in the high-temperature steam softening process in a large number, reduces the condensed water discharge capacity, reduce carbohydrate and lignin degradation products loss in the discharge process, promote the gummed in later stage.The 2nd, take slowly the progressively softening method of increasing temperature and pressure and moment step-down, can reduce the knot water degree of condensed water, bamboo fibre is fully expanded and separate fast, improve sweeping rate.The 3rd, after oven dry, spray additive, and in defibrator process technology, do not spray, can increase the temperature and pressure in the defibrator process, improve the sweeping rate of bamboo fibre, main cause is to increase additive in defibrator process, when temperature and pressure increased, the free radical after can causing activating reconfigured, and reduced the concentration of free radical, otherwise then the sweeping of fiber rate is low; Simultaneously, the temperature and pressure height can not produce a large amount of condensed waters, can reduce carbohydrate and lignin degradation products loss in the discharge process.
Specific embodiment
Concrete production method of the present invention, step are as follows:
1, gets bamboo wood, comprise bamboo root, bamboo bar, the bamboo tip, bamboo wood leftover bits and pieces etc., be broken into generous 1～30mm, the inhomogeneous particle of long 1～100mm.
If the moisture content of 2 bamboo particles is higher, the bamboo particle can be dried to moisture content below 18%.
3, moisture content is inserted the high-temperature steam stove at the bamboo particle below 18%, opening steam slowly heats up, programming rate is controlled in 60 ℃/hour, pressure is controlled at more than the 0.4Mpa, the condensed water that allows the bamboo particle absorb steam in a large number to be produced or not knot water in the stove, when temperature rises to 130 ℃ as far as possible, heat-insulation pressure keeping fully expanded bamboo fibre more than 1 hour; Afterwards, close inlet valve, open the steam escape valve fast decompression, decompression time was controlled in 360 seconds, reduced to zero from the highest, made bamboo fibre generation explosion, produced and separated.
4, will be through the bamboo particle after the softening processing of high-temperature steam, sending into sealing vertical shaft mill by vapour pressure grinds, the saturated vapour pressure of heat supply mill can remain on more than the 0.5Mpa, and temperature remains on 130 ℃～450 ℃, goes out to grind after making the sweeping rate of bamboo fibre reach 40% or more.
5, the bamboo fibre after the defibrator process is sent into the horizontal cylinder drying machine drying, bake out temperature is controlled in 120 ℃, and the moisture content of oven dry bamboo fibre is below 10%, and is bulk, not conglomeration.
6, the oven dry bamboo fibre is sent into the suspension tower with pneumatic conveyor and is sprayed additive, as oxidant or initator, or spray oxidant and initator, additive adopts high-pressure fog, bamboo fibre is evenly absorbed in the suspension tower, the bamboo fibre moisture content is reached between 10%～24%.
7, will dry the back bamboo fibre and deliver to stone bed material, and carry out precompressed afterwards, pressure is controlled at 6～20kg/cm
2, the time was controlled at 7～30 minutes.
8, the blank after precompressed is sent into the hot press hot-press solidifying, pressure is controlled at 20～70kg/cm
2, temperature is controlled at 120 ℃～200 ℃, and the heat-insulation pressure keeping time was controlled at 7～30 minutes.
9, will solidify the back sheet material lay down after, cooling, finished product is processed on the saw limit.
Claims (4)
1. the production method of a bamboo fibre artificial board without glue glued adhesion, comprise bamboo crushed aggregates → high-temperature steam softening → defibrator process → oven dry → stone → precompressed → hot pressing → unload plate → technologies such as cooling → finished product, it is characterized in that after oven dry, spraying additive.
2. the production method of a kind of bamboo fibre artificial board without glue glued adhesion according to claim 1, it is characterized in that high-temperature steam softening be to adopt the softening method of increasing temperature and pressure and moment step-down gradually.
3. the production method of a kind of bamboo fibre artificial board without glue glued adhesion according to claim 1 and 2, it is characterized in that described employing gradually the softening method of increasing temperature and pressure and moment step-down be: the bamboo particle is put in the sealable pressure vessel, programming rate is controlled in 60 ℃/hour, when temperature rises to 130 ℃, pressure is controlled at more than the 0.4Mpa, and heat-insulation pressure keeping is more than 1 hour; Afterwards, open steam escape valve and be depressurized to zero fast, the step-down time was controlled in 360 seconds.
4. the production method of a kind of bamboo fibre artificial board without glue glued adhesion according to claim 1 is characterized in that described bamboo crushed aggregates should keep moisture content below 18%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103008698A CN101214678A (en) | 2007-12-27 | 2007-12-27 | Method for producing bamboo fibre artificial board without glue glued adhesion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103008698A CN101214678A (en) | 2007-12-27 | 2007-12-27 | Method for producing bamboo fibre artificial board without glue glued adhesion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101214678A true CN101214678A (en) | 2008-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007103008698A Pending CN101214678A (en) | 2007-12-27 | 2007-12-27 | Method for producing bamboo fibre artificial board without glue glued adhesion |
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| CN (1) | CN101214678A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712179B (en) * | 2009-11-06 | 2011-05-11 | 南京林业大学 | Manufacturing method of cold plasma modified cellulolytic enzyme lignin/plant fiber composite material |
| CN102501278A (en) * | 2011-11-16 | 2012-06-20 | 宁国中集竹木制品有限公司 | Unit arc bamboo splint flattening and shaping method |
| CN103707381A (en) * | 2014-01-10 | 2014-04-09 | 宁波大世界家具研发有限公司 | Method for manufacturing non-glued bamboo fiber board |
| CN103722604A (en) * | 2014-01-10 | 2014-04-16 | 宁波大世界家具研发有限公司 | Method for manufacturing bamboo fiber non-glued door plank |
| CN108749457A (en) * | 2018-05-28 | 2018-11-06 | 浙江九川竹木股份有限公司 | The production method and making apparatus of bamboo decorative plate |
| CN109605534A (en) * | 2019-01-16 | 2019-04-12 | 朱延朋 | A kind of preparation method of the degradable plate of composite biomass |
| CN113445370A (en) * | 2021-07-13 | 2021-09-28 | 中国农业科学院麻类研究所 | Glue-free straw material, preparation method and application thereof |
| CN115008559A (en) * | 2022-06-27 | 2022-09-06 | 广东木森态新材料科技有限公司 | Process method for hot-pressing high-water-content plywood |
-
2007
- 2007-12-27 CN CNA2007103008698A patent/CN101214678A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712179B (en) * | 2009-11-06 | 2011-05-11 | 南京林业大学 | Manufacturing method of cold plasma modified cellulolytic enzyme lignin/plant fiber composite material |
| CN102501278A (en) * | 2011-11-16 | 2012-06-20 | 宁国中集竹木制品有限公司 | Unit arc bamboo splint flattening and shaping method |
| CN102501278B (en) * | 2011-11-16 | 2014-09-03 | 宁国中集竹木制品有限公司 | Unit arc bamboo splint flattening and shaping method |
| CN103707381A (en) * | 2014-01-10 | 2014-04-09 | 宁波大世界家具研发有限公司 | Method for manufacturing non-glued bamboo fiber board |
| CN103722604A (en) * | 2014-01-10 | 2014-04-16 | 宁波大世界家具研发有限公司 | Method for manufacturing bamboo fiber non-glued door plank |
| CN108749457A (en) * | 2018-05-28 | 2018-11-06 | 浙江九川竹木股份有限公司 | The production method and making apparatus of bamboo decorative plate |
| CN109605534A (en) * | 2019-01-16 | 2019-04-12 | 朱延朋 | A kind of preparation method of the degradable plate of composite biomass |
| CN113445370A (en) * | 2021-07-13 | 2021-09-28 | 中国农业科学院麻类研究所 | Glue-free straw material, preparation method and application thereof |
| CN115008559A (en) * | 2022-06-27 | 2022-09-06 | 广东木森态新材料科技有限公司 | Process method for hot-pressing high-water-content plywood |
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