CN107891504A - The drying means of Eucalyptus core plate - Google Patents
The drying means of Eucalyptus core plate Download PDFInfo
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- CN107891504A CN107891504A CN201711228083.XA CN201711228083A CN107891504A CN 107891504 A CN107891504 A CN 107891504A CN 201711228083 A CN201711228083 A CN 201711228083A CN 107891504 A CN107891504 A CN 107891504A
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- Prior art keywords
- drying
- core plate
- eucalyptus core
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- eucalyptus
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of drying means of Eucalyptus core plate, it is related to wood processing technique field, this method comprises the following steps：Eucalyptus core plate is submerged into boiling in the hot water, then natural air drying 24~32 hours；Secondary drying is carried out to the Eucalyptus core plate air-dried, first time drying temperature is 68~75 DEG C, and drying time is 2~3h, after being cooled to room temperature, is incubated 0.5~1h；The drying temperature of second of drying is 55~65 DEG C, and drying time is 1~2h, is cooled to room temperature, is less than 16% to water content；Eucalyptus core plate is flattened with hot press, the Eucalyptus core plate Jing Guo hot pressing is taken out and dries 1~2 day, produce.The present invention solves the problems, such as existing Eucalyptus core plate slow drying speed.
Description
Technical field
The present invention relates to wood processing technique field, especially a kind of drying means of Eucalyptus core plate.
Background technology
Eucalyptus is a kind of light leaf wood, and wood grain is close and irregular, and structure is thin and even, in weight, low intensity, and drying shrinkage
Greatly, sapwood layer is wider, in pale pink, heartwood is then light brown red in vain.It is fast that Eucalyptus contains growth, the features such as strong adaptability,
Material is not tough and tensile, light, easily broken when processing and using.Wooden than more flexible but its is cheap, it can in furniture is made
To make the larger structure of some flexibility, Hepplewhite surface is smooth, thus is obtained extensively in the production of the furniture such as cabinet
General application.
Eucalyptus core plate is being commonly called as Eucalyptus veneer, and it is to adopt side by peeler to roll the wood flake that forms of rotary-cut eucalyptus
Shape material, its thickness are usually between 0.4-10mm.Eucalyptus core plate is a kind of anisotropic material, in the drying process, different
It is different that size is shunk in direction, thus Eucalyptus core plate is easily deformed, ftractureed and the seasoning defect drying defect such as shrinkage in the drying process,
In order to reduce the generation of these defects, a kind of existing drying means of Eucalyptus core plate is to be put into perseverance in 70 DEG C or so of dry kiln
Temperature is dried 20 days or so, and Eucalyptus core plate is steamed during drying, carries out conditioning.The drying of this drying means
Defect is few, and still, its slow drying speed, arid cycle is grown.
The content of the invention
It is an object of the invention to provide a kind of drying means of Eucalyptus core plate, this method can solve existing Eucalyptus core plate
The problem of slow drying speed.
In order to solve the above problems, the technical solution adopted by the present invention is：A kind of eucalyptus of drying means of this Eucalyptus core plate
The drying means of block board comprises the following steps：
1）Eucalyptus core plate is immersed in 85~90 DEG C of hot water, insulation boiling 3~4 hours；
2）Digested Eucalyptus core plate is taken out, natural air drying 24~32 hours；
3）Secondary drying is carried out to the Eucalyptus core plate that has air-dried, first time drying temperature is 68~75 DEG C, drying time is 2~
3h, after being cooled to room temperature, it is incubated 0.5~1h；The drying temperature of second of drying is 55~65 DEG C, and drying time is 1~2h, cold
But to room temperature, it is less than 16% to water content；
4）Flatten Eucalyptus core plate with hot press, platen temperature is 90~110 DEG C, and pressure be 4~8MPa, hot pressing time for 45~
80s；
5）Take out the Eucalyptus core plate Jing Guo hot pressing to dry 1~2 day, produce.
In the technical scheme of the drying means of above-mentioned Eucalyptus core plate, more specifically technical scheme can also be：Step 1）'s
Contain the sodium chloride and 0.1~0.5% bleeding agent that weight percent content is 1~1.5% in hot water.
Further, step 3）Steam once per 0.5h during drying for the first time and second of drying, steam every time
Time is 0.5~1.5min.
Had the advantages that by adopting the above-described technical solution, the present invention contains compared with prior art：Significantly subtract
Drying time is lacked, has shortened arid cycle, and reduced and dry caused cracking, deformation and shrinkage phenomenon；Pass through boiling
Change core plate inside Free water movement, discharge moisture, shorten follow-up rate of drying, natural air drying to realize Balance Treatment,
Reduce core plate internal stress；Carry out redrying and combine to steam in lower temperature, it is caused dry in the drying process to reduce core plate
Dry defect；Set by hot pressing and rational hot compression parameterses, effectively shorten drying time, and under pressure, maintain
Excellent dry mass.
Embodiment
With reference to embodiment, the invention will be further described：
Embodiment 1
A kind of drying means of Eucalyptus core plate of drying means of the Eucalyptus core plate of the present embodiment comprises the following steps：
1）Eucalyptus core plate is immersed in 85 DEG C of hot water, the sodium chloride and 0.1% that weight percent content is 1% is contained in hot water
Bleeding agent, insulation boiling 3 hours；
2）Digested Eucalyptus core plate is taken out, natural air drying 24 hours；
3）Secondary drying is carried out to the Eucalyptus core plate air-dried, first time drying temperature is 68 DEG C, drying time 2h, drying
During per 0.5h steam once, each steam injection time be 0.5min, for the first time dry after the completion of, be cooled to room temperature, insulation
0.5h；The drying temperature of second of drying is 55 DEG C, drying time 1h, is steamed once per 0.5h during drying, every time
Steam injection time is 0.5min, after the completion of drying, is cooled to room temperature, is less than 16% to water content, takes out core plate；
4）Eucalyptus core plate is flattened with hot press, platen temperature is 90 DEG C, pressure 4MPa, hot pressing time 45s；
5）Take out the Eucalyptus core plate Jing Guo hot pressing to dry 1 day, produce.
The final moisture content of Eucalyptus core plate thick the present embodiment 6mm is 12%, plate face is smooth, no concave-convex, warpage, deformation.
Embodiment 2
A kind of drying means of Eucalyptus core plate of drying means of the Eucalyptus core plate of the present embodiment comprises the following steps：
1）Eucalyptus core plate is immersed in 88 DEG C of hot water, in hot water containing weight percent content be 1.2% sodium chloride and
0.3% bleeding agent, insulation boiling 3.5 hours；
2）Digested Eucalyptus core plate is taken out, natural air drying 28 hours；
3）Secondary drying is carried out to the Eucalyptus core plate air-dried, first time drying temperature is 72 DEG C, drying time 2.5h, drying
During per 0.5h steam once, each steam injection time be 1min, for the first time dry after the completion of, be cooled to room temperature, insulation
45min；The drying temperature of second of drying is 60 DEG C, drying time 1.5h, is steamed once per 0.5h during drying, often
Secondary steam injection time is 1min, after the completion of drying, is cooled to room temperature, is less than 16% to water content, takes out core plate；
4）Eucalyptus core plate is flattened with hot press, platen temperature is 100 DEG C, pressure 6MPa, hot pressing time 60s；
5）Take out the Eucalyptus core plate Jing Guo hot pressing to dry 1.5 days, produce.
The final moisture content of Eucalyptus core plate thick the present embodiment 6mm is 10.3%, plate face is smooth, no concave-convex, warpage, deformation.
Embodiment 3
A kind of drying means of Eucalyptus core plate of drying means of the Eucalyptus core plate of the present embodiment comprises the following steps：
1）Eucalyptus core plate is immersed in 90 DEG C of hot water, in hot water containing weight percent content be 1.5% sodium chloride and
0.5% bleeding agent, insulation boiling 4 hours；
2）Digested Eucalyptus core plate is taken out, natural air drying 32 hours；
3）Secondary drying is carried out to the Eucalyptus core plate air-dried, first time drying temperature is 75 DEG C, drying time 3h, drying
During steamed once per 0.5h, each steam injection time be 1.5min, after the completion of drying for the first time, is cooled to room temperature, insulation 1h；
The drying temperature of second of drying is 65 DEG C, drying time 2h, is steamed once per 0.5h during drying, when steaming every time
Between be 1.5min, after the completion of drying, be cooled to room temperature, to water content be less than 16%, take out core plate；
4）Eucalyptus core plate is flattened with hot press, platen temperature is 110 DEG C, pressure 8MPa, hot pressing time 80s；
5）Take out the Eucalyptus core plate Jing Guo hot pressing to dry 2 days, produce.
The final moisture content of Eucalyptus core plate thick the present embodiment 6mm is 8.5%, plate face is smooth, no concave-convex, warpage, deformation.
Claims (3)
1. a kind of drying means of Eucalyptus core plate, it is characterised in that comprise the following steps：
1）Eucalyptus core plate is immersed in 85~90 DEG C of hot water, insulation boiling 3~4 hours；
2）Digested Eucalyptus core plate is taken out, natural air drying 24~32 hours；
3）Secondary drying is carried out to the Eucalyptus core plate that has air-dried, first time drying temperature is 68~75 DEG C, drying time is 2~
3h, after being cooled to room temperature, it is incubated 0.5~1h；The drying temperature of second of drying is 55~65 DEG C, and drying time is 1~2h, cold
But to room temperature, it is less than 16% to water content；
4）Flatten Eucalyptus core plate with hot press, platen temperature is 90~110 DEG C, and pressure be 4~8MPa, hot pressing time for 45~
80s；
5）Take out the Eucalyptus core plate Jing Guo hot pressing to dry 1~2 day, produce.
2. the drying means of Eucalyptus core plate according to claim 1, it is characterised in that：Step 1）Hot water in contain weight
Degree is 1~1.5% sodium chloride and 0.1~0.5% bleeding agent.
3. the drying means of Eucalyptus core plate according to claim 1, it is characterised in that：Step 3）Drying and second for the first time
Steamed once per 0.5h during secondary drying, each steam injection time is 0.5~1.5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711228083.XA CN107891504A (en) | 2017-11-29 | 2017-11-29 | The drying means of Eucalyptus core plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711228083.XA CN107891504A (en) | 2017-11-29 | 2017-11-29 | The drying means of Eucalyptus core plate |
Publications (1)
| Publication Number | Publication Date |
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| CN107891504A true CN107891504A (en) | 2018-04-10 |
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| CN201711228083.XA Withdrawn CN107891504A (en) | 2017-11-29 | 2017-11-29 | The drying means of Eucalyptus core plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108943297A (en) * | 2018-08-30 | 2018-12-07 | 常州吉娜泰盛地板有限公司 | Heat resisting humidity floor and preparation method thereof |
| CN110986565A (en) * | 2019-11-27 | 2020-04-10 | 雪宝国际智能科技有限公司 | Plate core drying process |
| CN112895052A (en) * | 2019-12-03 | 2021-06-04 | 洪江市三哥竹业有限责任公司 | Method for manufacturing bamboo stool |
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| CN102398289A (en) * | 2011-10-28 | 2012-04-04 | 夏国华 | Wood modifying method |
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| CN103203785A (en) * | 2013-03-15 | 2013-07-17 | 李海滨 | Drying defect reduction and flame-retardant treatment method for eucalyptus |
| CN103659973A (en) * | 2013-11-26 | 2014-03-26 | 广西生态工程职业技术学院 | High temperature treatment technology for fast-growing man-made forest eucalyptus wood |
| CN105222534A (en) * | 2015-10-31 | 2016-01-06 | 重庆雨帝建材有限公司 | Method for drying wood |
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2017
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| CN103144170A (en) * | 2013-03-21 | 2013-06-12 | 广西生态工程职业技术学院 | Preparation method for eucalyptus wood floor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108943297A (en) * | 2018-08-30 | 2018-12-07 | 常州吉娜泰盛地板有限公司 | Heat resisting humidity floor and preparation method thereof |
| CN108943297B (en) * | 2018-08-30 | 2021-10-22 | 常州吉娜泰盛地板有限公司 | Heat-resistant high-temperature-resistant moisture-resistant floor and preparation method thereof |
| CN110986565A (en) * | 2019-11-27 | 2020-04-10 | 雪宝国际智能科技有限公司 | Plate core drying process |
| CN112895052A (en) * | 2019-12-03 | 2021-06-04 | 洪江市三哥竹业有限责任公司 | Method for manufacturing bamboo stool |
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Application publication date: 20180410 |
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