CN102229162A - Balance humidifying technology method of artificial board - Google Patents
Balance humidifying technology method of artificial board Download PDFInfo
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- CN102229162A CN102229162A CN2011101093599A CN201110109359A CN102229162A CN 102229162 A CN102229162 A CN 102229162A CN 2011101093599 A CN2011101093599 A CN 2011101093599A CN 201110109359 A CN201110109359 A CN 201110109359A CN 102229162 A CN102229162 A CN 102229162A
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Abstract
The invention provides a balance humidifying technology method of an artificial board. The method is characterized by comprising the following steps: putting the artificial board in a balance drying kiln or a special balance humidifying room; regulating the temperature and humidity in the kiln, and carrying out the balance humidifying treatment of warming-up humidification, balance humidifying and aging nourishment, so that the moisture content of the artificial board is uniformed effectively, the moisture content gradient is eliminated, and the residual stress of wood is released, wherein the whole process is finished within 3-5 days. By utilizing the method, the treated artificial board does not have the defects such as bending, deformation, degumming and the like in the subsequent production and manufacturing; the quality of the manufactured goods is improved effectively; the service life of the artificial board is prolonged; simultaneously the wood consumption is reduced; and the technology method has high generality, and is suitable for various different artificial boards, such as plywoods, core-boards and the like.
Description
Technical field
The present invention relates to a kind of timber plate damping treatment process, specifically is a kind of wood-based plate balance humidifying technology method.
Background technology
China's wood-based plate industry has obtained great achievement through 80 years of development, has entered since this century, and China's average annual growth rate of wood-based plate production has surpassed 20%, becomes first big country of world's Wood-based Panel Production, consumption and foreign trade for years.Developing into of wood-based plate industry efficiently utilizes timber resources, and realization forestry sustainable development strategy has been made huge contribution.
Widely apply wood-based plate in the modern woodwork,, adopt the structure of solid wood+wood-based plate, both saved the solid wood materials, realized the psychological demand of consumer again " natural wood veins " as wooden furniture and multi-layer composite floor etc.Yet because domestic wood-based plate industry high speed development, the product purpose classification is not enough, and quality is very different, defective such as often cause the finished product of downstream factory to deform, to come unglued.Wherein, topmost defective is that the moisture content distribution of wood-based plate is excessive, as glued board national Specification moisture content at 6～14% woodworks that just are difficult to be applicable to zones of different, different purposes; In addition, same the too high difference of moisture content above the wood-based plate, stress are not eliminated the hidden danger of quality that has yet become downstream product.Overwhelming majority furniture or floor producer rely on supplier fully to the quality of wood-based plate, do not carry out Balance Treatment, indivedual producers handle then, its method that adopts is the conventional method of the drying of wood, handle the back wood-based plate and a large amount of defectives can occur,, residual stress inhomogeneous as moisture content can't discharge etc., is difficult to satisfy the quality requirement of subsequent production.
Summary of the invention
At above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of wood-based plate balance humidifying technology method, with the moisture content of balanced wood-based plate, eliminate moisture gradient and discharge the residual stress of timber, make no longer occur in the production and processing crooked, be out of shape and defective such as come unstuck.
For achieving the above object, the technical solution adopted in the present invention is: a kind of wood-based plate balance humidifying technology method, comprise stacking successively, go into kiln, balance damping and kiln discharge four-stage, be provided with steam unit in the described kiln, drive air-flow circulates in the kiln blower fan and exhaust apparatus, be characterized in that above-mentioned balance damping processing may further comprise the steps:
(1), The pre-heat treatment: open steam unit and blower fan, keep exhaust apparatus to be in closed condition, slowly heat up with the speed that per hour is no more than 10 ℃, about 2～12 hours, maximum temperature was no more than 55 ℃ in the kiln;
(2), heating up adds wet process: keep fan operation, exhaust apparatus closing state, set equilibrium moisture content (EMC) and adjust air themperature, humidity, keep the batch (-type) spray to steam, handled 2～10 hours;
(3), the balance damping is handled: according to material applications and final water content requirement, adjust temperature, humidity and equilibrium moisture content (EMC) once more, keep blower fan to be in running status, keep the batch (-type) spray to steam, open exhaust apparatus, kept 20～50 hours;
(4), the ageing health is handled: stop heating, keep blower fan to be in the low cruise state, the batch (-type) spray is steamed or exhaust, makes kiln temperature drop to 20～35 ℃ automatically, and the cooling conditioned time was controlled at 20～72 hours.
Wherein, in order to activate the moisture of timber inside, the temperature of adjusting in the above-mentioned steps (two) is that 30 ℃～55 ℃, humidity are 60%～90%, and setting equilibrium moisture content (EMC) is 10%～18%, above-mentioned steam unit steams once midfeather 20～40min with spray in per 1～5 hour.
Adjust temperature in the above-mentioned steps (three) and be 35 ℃～48 ℃, humidity and be 40%～60%, equilibrium moisture content (EMC) is 7%～10%, above-mentioned steam unit sprays at every turn and steamed 20～60 minutes, each midfeather 2～10 hours, keeping furnace air humidity is 40%～60%.
Set above-mentioned steam unit in the above-mentioned steps (four) and steamed 5～20 minutes with each spray, midfeather 2～10 hours, keeping furnace air humidity is 40%～60%.
Need handle through sampling observation after above-mentioned balance damping is handled: by the moisture content of sampling observation wood-based plate, its limit deviation finishes balance damping processing at target moisture content ± 1.5% with interior, otherwise repeats above-mentioned steps (two)～(four).Its target water content requirement is generally 5～10% according to specific product and different.
The dry distortion of transmission, minimizing in order to exert oneself on helping in the above-mentioned stacking processing procedure, separates piling with parting bead between the artificial board substrate, and the length direction of described parting bead aligns point-blank perpendicular to the length direction of base material and the parting bead of levels.Ventilate when further guaranteeing drying smooth, wind speed is even, above-mentionedly go in the kiln processing procedure, the direction of ventilation of the base material buttress of piling is consistent with the direction that the blower fan in the kiln is dried, and all needs certain distance apart between base material buttress and the base material buttress and between base material buttress and the kiln wall.
The present invention is in balance damping processing procedure, owing to adopt repeatedly target setting temperature and equilibrium moisture content (EMC), and through intensification humidification, balance damping and ageing health, finally obtain moisture content timber up to standard, the whole moisture content difference of the timber of same batch processing can be in ± 1.5%.By this process, but the moisture content of efficient balance wood-based plate, eliminate moisture gradient and discharge the residual stress of timber, make wood-based plate after the processing in production and processing, no longer occur crooked, be out of shape and defective such as come unstuck, effectively improved the quality of manufactured goods, improved the service life of wood-based plate, also reduced simultaneously consumption to timber, wood-based plate balance humidifying technology method highly versatile of the present invention can be widely used in the balance humidifying technology of various different wood-based plates such as glued board, core-board.
The specific embodiment
A kind of wood-based plate balance humidifying technology method, comprise stacking successively, go into kiln, balance damping and kiln discharge four-stage, be provided with steam unit in the balance dry kiln, drive air-flow circulates in the kiln blower fan and exhaust apparatus, wherein the balance damping is handled and be may further comprise the steps:
(1), The pre-heat treatment: open steam unit and blower fan, keep exhaust apparatus to be in closed condition, slowly heat up with the speed that per hour is no more than 10 ℃, about 2～12 hours, maximum temperature was no more than 55 ℃ in the kiln;
(2), heating up adds wet process: keep fan operation, exhaust apparatus closing state, set equilibrium moisture content (EMC) and adjust air themperature, humidity, keep the batch (-type) spray to steam, handled 2～10 hours;
(3), the balance damping is handled: according to material applications and final water content requirement, adjust temperature, humidity and equilibrium moisture content (EMC) once more, keep blower fan to be in running status, keep the batch (-type) spray to steam, open exhaust apparatus, kept 20～50 hours;
(4), the ageing health is handled: stop heating, keep blower fan to be in the low cruise state, the batch (-type) spray is steamed or exhaust, makes kiln temperature drop to 20～35 ℃ automatically, and the cooling conditioned time was controlled at 20～72 hours.
This embodiment is an example with the glued board as the composite floor board base material, and its whole technical process is as follows:
1, the glued board base material of all size of buying is inspected by random samples, its every quality index meets the requirement of national sector standard LYT1738-2008 " solid wooden compound floor glued board. ", particularly flood peel strength and should meet standard-required, otherwise spray influences bonding strength after steaming;
2, being 6～14% glued board base material with first moisture content with (700～1230) mm*(15～20) the mm*12mm parting bead separates piling; Stiker spacing is controlled at 300～450mm, the parting bead of levels will align point-blank, the pallet placement of foot will be placed parting bead, the vertical base material length direction of parting bead direction, help up and down strength transmission like this, reduce dry distortion, ventilate when guaranteeing drying smooth, wind speed is even;
3, the base material of piling dress changes the balance dry kiln on request, the direction of ventilation of base material buttress is consistent with kiln blower ventilation direction, the base material buttress is on one side from the about 100～800mm of kiln wall, buttress and buttress spacing are at 100～200mm,, front and back base material buttress spacing is controlled at about 150～250mm, wants mutual staggered positions during front and back base material buttress, sign indicating number is put 2～3 buttress up and down, is that the top base material buttress and last ventilating duct are at a distance of 150～250mm as far as possible; The base material buttress is apart from forward and backward kiln wall 800～1000mm;
4, the loading of kiln of glued board base material finishes and begins to heat, and is warmed to 35～45 ℃, by the steam unit spraying steam, makes furnace air humidity be controlled at 70～80%, and EMC 12～15%, continue 4～6 hours, and each spray was steamed 20～30 minutes, the middle interruption 30 minutes; Keep 35～45 ℃ of temperature then, air humidity is adjusted at 45～60%, and EMC is controlled at 7～10%, 24～48 hours retention times, final moisture content is controlled at 7～9%, with the dash board moisture content be complementary (promptly differing 0.5～3.5% with dash board) of gummed;
When 5, base material balancing water content drying reaches requirement, test its moisture content, make the moisture content error be controlled at 0.5～1.5% and cool to 25～32 ℃ then with interior, humidity is controlled at 45～60%, and the cooling conditioned time was controlled at 20～48 hours.
Although the present invention describes with reference to specific embodiment, this description and not meaning that is construed as limiting the present invention.With reference to description of the invention, other of the disclosed embodiments change, and all can expect for those skilled in the art, and this variation should belong in the affiliated claim institute restricted portion.Now, draw that comparatively desirable numerical value is listed below in the balance damping process repeatedly carrying out statistical analysis on the basis of experiment repeatedly, with this as further describing to of the present invention:
The base material balance damping master meter that is complementary with birch (6～7.5%) dash board
| Handling procedure | Base material moisture content % | Dry-bulb temperature ℃ | Relative humidity % | Equilibrium moisture content EMC | Processing time (h) |
| Warm-up phase | 8.0～10.5 | 32 | 60 | ? | 1 ~ 2 hour |
| The intensification humidification | ? | 45 | 80 | 15 | 4～6 |
| The balance damping | ? | 45 | 50～65 | 7～10 | 32 |
| The ageing health | 8.5～9.2 | 32 | 45～55 | 8～10 | 24 |
The base material balance drying schedule that is complementary with pyinkado (7.1～7.9%) dash board
| Handling procedure | Base material moisture content % | Dry-bulb temperature ℃ | Relative humidity % | Equilibrium moisture content EMC | Processing time (h) |
| Warm-up phase | 8.5～11 | 32 | 70 | ? | Heated 1 hour |
| The intensification humidification | ? | 45 | 80 | 15 | 4～6 |
| The balance damping | ? | 45 | 50～65 | 7～10 | 38 |
| The ageing health | 8.0～8.8 | 32 | 45～55 | 7.5～9.5 | 30 |
Sell to the wooden furniture glued board balance drying schedule in the Three Eastern Provinces
| Handling procedure | Base material moisture content % | Dry-bulb temperature ℃ | Relative humidity % | Equilibrium moisture content EMC | Processing time (h) |
| Warm-up phase | 8.9～11.5 | 32 | 65 | ? | Heated 1 hour |
| The intensification humidification | ? | 45 | 80 | 15 | 4～6 |
| The balance damping | ? | 45 | 50～65 | 7～8 | 40 |
| The ageing health | 7.0～7.5 | 32 | 40～45 | 7～8 | 32 |
Claims (8)
1. wood-based plate balance humidifying technology method, comprise stacking successively, go into kiln, balance damping and kiln discharge four-stage, be provided with steam unit in the described kiln, drive air-flow circulates in the kiln blower fan and exhaust apparatus, it is characterized in that above-mentioned balance damping processing may further comprise the steps:
(1), The pre-heat treatment: open steam unit and blower fan, keep exhaust apparatus to be in closed condition, slowly heat up with the speed that per hour is no more than 10 ℃, about 2～12 hours, maximum temperature was no more than 55 ℃ in the kiln;
(2), heating up adds wet process: keep fan operation, exhaust apparatus closing state, set equilibrium moisture content (EMC) and adjust air themperature, humidity, keep the batch (-type) spray to steam, handled 2～10 hours;
(3), the balance damping is handled: according to material applications and final water content requirement, adjust temperature, humidity and equilibrium moisture content (EMC) once more, keep blower fan to be in running status, keep the batch (-type) spray to steam, open exhaust apparatus, kept 20～50 hours;
(4), the ageing health is handled: stop heating, keep blower fan to be in the low cruise state, the batch (-type) spray is steamed or exhaust, makes kiln temperature drop to 20～35 ℃ automatically, and the cooling conditioned time was controlled at 20～72 hours.
2. wood-based plate balance humidifying technology method according to claim 1 is characterized in that in the above-mentioned steps (two):
In order to activate the moisture of timber inside, the temperature of adjusting in the above-mentioned steps (two) is that 30 ℃～55 ℃, humidity are 60%～90%, setting equilibrium moisture content (EMC) is 10%～18%, and above-mentioned steam unit steams once midfeather 20～40min with spray in per 1～5 hour.
3. wood-based plate balance humidifying technology method according to claim 1 is characterized in that in the above-mentioned steps (three):
Adjust temperature and be 35 ℃～48 ℃, humidity and be 40%～60%, equilibrium moisture content (EMC) is 7%～10%, above-mentioned steam unit sprays at every turn and steamed 20～60 minutes, each midfeather 2～10 hours, keeping furnace air humidity is 40%～60%.
4. wood-based plate balance humidifying technology method according to claim 1 is characterized in that in the above-mentioned steps (four):
Set above-mentioned steam unit and steamed 5～20 minutes with each spray, midfeather 2～10 hours, keeping furnace air humidity is 40%～60%.
5. wood-based plate balance humidifying technology method according to claim 1, needing after above-mentioned balance damping is handled it is characterized in that through sampling observation: by the moisture content of sampling observation wood-based plate, its limit deviation is in target moisture content ± 1.5%, can finish the balance damping and handle, otherwise repeat above-mentioned steps (two)～(four).
6. wood-based plate balance humidifying technology method according to claim 5 is characterized in that above-mentioned target water content requirement according to specific product and different, is generally 5%～10%.
7. wood-based plate balance humidifying technology method according to claim 1, it is characterized in that in the above-mentioned stacking processing procedure, separate piling with parting bead between the artificial board substrate, the length direction of described parting bead aligns point-blank perpendicular to the length direction of base material and the parting bead of levels.
8. wood-based plate balance humidifying technology method according to claim 1, it is characterized in that above-mentionedly going in the kiln processing procedure, the direction of ventilation of the base material buttress of piling is consistent with the direction that the blower fan in the kiln is dried, and all needs certain distance apart between base material buttress and the base material buttress and between base material buttress and the kiln wall.
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| CN201110109359.9A CN102229162B (en) | 2011-04-29 | 2011-04-29 | Balance humidifying technology method of artificial board |
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| CN201110109359.9A CN102229162B (en) | 2011-04-29 | 2011-04-29 | Balance humidifying technology method of artificial board |
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| CN102229162B CN102229162B (en) | 2014-02-05 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102490237A (en) * | 2011-11-18 | 2012-06-13 | 吴江市物华五金制品有限公司 | Manufacturing method for wood comb |
| CN104227869A (en) * | 2014-07-21 | 2014-12-24 | 福建农林大学 | Plastic-wooden composite profile conditioning chamber |
| CN104526821A (en) * | 2014-12-08 | 2015-04-22 | 浙江百利达木业有限公司 | Floor blank cold pressing pre-treatment process |
| CN108789743A (en) * | 2018-07-02 | 2018-11-13 | 嘉善奥林木业有限公司 | A kind of annual ring floor, wallboard production technology |
| CN108908605A (en) * | 2018-08-07 | 2018-11-30 | 中国林业科学研究院木材工业研究所 | A kind of drying means of resin dipping improved wood |
| CN109163547A (en) * | 2018-08-24 | 2019-01-08 | 湖州市南浔三亚家私有限公司 | The drying means of poplar veneer |
| CN109676743A (en) * | 2018-12-29 | 2019-04-26 | 南宁市邦得力木业有限责任公司 | The production technology of undersized log filling plate |
| CN110604407A (en) * | 2019-09-05 | 2019-12-24 | 江苏舒雅家具有限公司 | Anti-deformation furniture solid wood board |
| CN111873103A (en) * | 2020-06-30 | 2020-11-03 | 老木匠木业有限公司 | Wood moisture balance method |
| CN112706245A (en) * | 2019-10-24 | 2021-04-27 | 中山市大自然木业有限公司 | Method for representing stability performance of wood |
| CN114654554A (en) * | 2022-03-24 | 2022-06-24 | 湖北燕加隆木制品有限公司 | Special-shaped floor production method and special-shaped floor processing frame |
| CN114953089A (en) * | 2022-06-10 | 2022-08-30 | 福建居怡竹木业有限公司 | Method for correcting bent and warped plates of solid wood composite floor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102490237A (en) * | 2011-11-18 | 2012-06-13 | 吴江市物华五金制品有限公司 | Manufacturing method for wood comb |
| CN104227869A (en) * | 2014-07-21 | 2014-12-24 | 福建农林大学 | Plastic-wooden composite profile conditioning chamber |
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| CN108789743A (en) * | 2018-07-02 | 2018-11-13 | 嘉善奥林木业有限公司 | A kind of annual ring floor, wallboard production technology |
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| CN109163547A (en) * | 2018-08-24 | 2019-01-08 | 湖州市南浔三亚家私有限公司 | The drying means of poplar veneer |
| CN109676743A (en) * | 2018-12-29 | 2019-04-26 | 南宁市邦得力木业有限责任公司 | The production technology of undersized log filling plate |
| CN110604407A (en) * | 2019-09-05 | 2019-12-24 | 江苏舒雅家具有限公司 | Anti-deformation furniture solid wood board |
| CN112706245A (en) * | 2019-10-24 | 2021-04-27 | 中山市大自然木业有限公司 | Method for representing stability performance of wood |
| CN111873103A (en) * | 2020-06-30 | 2020-11-03 | 老木匠木业有限公司 | Wood moisture balance method |
| CN114654554A (en) * | 2022-03-24 | 2022-06-24 | 湖北燕加隆木制品有限公司 | Special-shaped floor production method and special-shaped floor processing frame |
| CN114953089A (en) * | 2022-06-10 | 2022-08-30 | 福建居怡竹木业有限公司 | Method for correcting bent and warped plates of solid wood composite floor |
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Effective date of registration: 20161212 Address after: Li Zhen Zhuge Dian Cun 276111 Shandong city of Linyi province Tancheng County Patentee after: Shandong Yihua Furniture Co., Ltd. Address before: Chenghai District 515800 of Guangdong city of Shantou Province under the town of Lian Huai Dong Industrial Zone Patentee before: Guangdong Yihua Timber Industry Co., Ltd. |