CN109333720A - A kind of production method of timber - Google Patents
A kind of production method of timber Download PDFInfo
- Publication number
- CN109333720A CN109333720A CN201811119971.2A CN201811119971A CN109333720A CN 109333720 A CN109333720 A CN 109333720A CN 201811119971 A CN201811119971 A CN 201811119971A CN 109333720 A CN109333720 A CN 109333720A
- Authority
- CN
- China
- Prior art keywords
- raw material
- timber
- drying
- production method
- freezing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- B27K5/0005—Cryogenic treatment
-
- 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
- B27K5/007—Treating of wood not provided for in groups B27K1/00, B27K3/00 using pressure
-
- 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
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
-
- 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
- B27N1/00—Pretreatment of moulding material
-
- 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
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- 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
Landscapes
- 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)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention belongs to artificial board field more particularly to a kind of production methods of timber.A kind of production method of timber, which comprises the following steps: raw material is used as after 1. taking the leftover pieces of timber, sawdust to be crushed；2. raw material is placed in subzero 18 ° of environment freezing processing 24 hours or more；3. by high-temperature process is carried out after freezing, redrying after impregnation after material drying that treated；4. press curing；It becomes a useful person 5. cutting.Production method of the invention can make timber under the premise of performance requirement harsh under meeting as bath bucket plate use condition, and maximum possible reduces cost, while the release of remaining formaldehyde is completely more quick, has high economic value.
Description
Technical field
The invention belongs to artificial board field more particularly to a kind of production methods of timber.
Background technique
Due to environmental protection and the factor of plate property, the leftover pieces plank that sawdust has been fabricated to as raw material is replaced into day
Right plank is trend of the times.As the plate that bath bucket uses, cut with the performance requirement of common Manufacture of Floor, desk, cabinet plate
It is so different, since the use environment of bath bucket is severe, to expansion rate of water absorption, the tolerance to expand with heat and contract with cold, antibacterial and mouldproof
Energy, crack resistence performance, durability have higher requirement, then the performance needed for realizing such as how cheap price, exactly sends out
Bright people will solve the problems, such as.
Summary of the invention
The present invention provides the timber of top performance with the smallest cost, and specific technical solution is as follows:
A kind of production method of timber, which comprises the following steps:
1. being used as raw material after taking the leftover pieces of timber, sawdust to be crushed；
2. raw material is placed in subzero 18 ° of environment freezing processing 24 hours or more；
3. by high-temperature process is carried out after freezing, redrying after impregnation after material drying that treated；
4. press curing；
It becomes a useful person 5. cutting.
Preferably, the step 2. described in freezing processing be by the raw material of various different humidities by freezing after,
Its cell interior moisture frost expansion, so that cell wall and extraneous interchange channel increase.It, can be with since the volume of ice is greater than water
So that the cell wall of timber is split up, increase its internal interchange channel with outside, so that it is more fast in impregnation, drying process
Speed；
Preferably, the step 3. high temperature processing be high steam boiling, the high-pressure steam pressure be 0.1~
0.6mpa, the time of autoclaving between 0.5~2t, the effect of the drying be it is dry after moisture content of the raw material be 15% with
Under, the drying can dry for drying machine drying or solarization or ventilation.General timber high-temperature process removal sugar and right
Protein needs 3 hours or more time if being modified, but into after freezing processing excessively of the present invention, the processing time is greatly
It reduces, the boiling of high temperature and pressure destroys the sugar contained in raw material originally, increases antimildew and antibacterial performance, and improve and make
With the service life, drying is the processing for next step；
Preferably, 3. high temperature is handled to enter carbonization device after raw material stoving and carrying out high temperature carbonization, institute the step
The temperature for stating carbonization device high temperature carbonization is between 300 °~310 °, and the time is 3 hours.Since channel increase and cell wall are broken
It splits, the spring time can reduce, and carbonization temperature can be improved, and increase efficiency；
Preferably, 3. middle dipping process is so that the solid content of the glue water-borne glue infiltrated in raw material reaches to the step
Between 20%~25%, the average moisture in the raw material for infiltrating glue is reached 20% hereinafter, secondary dry when the redrying
Raw material to be processed after dry need to place 24 hours or more to uniform moisture.The solid content of glue reaches between 20%~25%
Could proof strength and expansion rate of water absorption performance indicator but do not improve cost excessively, to be processed after redrying contains
Collagen material need to place 24 hours or more to be in order to prevent in finished product since unevenly to generate density poor for moisture to uniform moisture
Different and generation internal stress；
Preferably, the step 3. in glue be that formalin adds phenol to react the water solubility of generation under alkaline environment
Phenol glue, the formalin are the formalin containing 20% methanol, then will be between the water soluble phenolic glue that be prepared use
Benzenediol is modified, or with organic-silicon-modified, or with PE modified, or changes with nanometer Si modification or with melamine
Property, above-mentioned modifying agent ratio is between 10%~15%, and the glue being thus prepared is step of the present invention 3. middle impregnation institute
Glue.The time that modified glue can make heating bond shortens, and adhesion strength becomes larger, and significantly reduces costs；
Preferably, the step 4. described in hot-press solidifying be raw material after the glue pre-processed is placed in mold,
The volume of the mold is 1.5~1.1/cm by density3It is configured, is then fed into hot press and carries out hot-press solidifying, the heat
Pressing temperature is between 110 °~120 °, and the curing time is 1.1~1.6min/mm, is cooled after solidification to center in plate
80 ° of temperature or less ejecting plates.
Die temperature is to ensure that plate will not be caused largely due to violent expanding with heat and contract with cold for 80 ° of central temperature or less in plate
Stress generate so that cracking or intensity be deteriorated；
Preferably, the step 5. in cut before, the plate after hot pressing should store three days or more in discharging
Stress and residual formaldehyde, are then cut again.Since channel becomes more, residual formaldehyde release is also more easy；
Preferably, the step 4. in be compressed to cold pressing, raw material after glue is first is placed in mold, compacting by the cold pressing
It is fixed afterwards by pin, then gang mould tool enters warming-up device together and heats.Cold pressing replaces hot pressing that can make the plate uniformity
It is higher.
The performance that production method of the invention can make timber harsh in the case where meeting as bath bucket plate use condition is wanted
Under the premise of asking, maximum possible reduces cost, while the release of remaining formaldehyde is completely more quick, has high economy
Value.
Specific embodiment
Embodiment 1
The embodiment of the present invention 1 is described in further detail below:
A kind of production method of timber, which comprises the following steps:
1. being used as raw material after taking the leftover pieces of timber, sawdust to be crushed；
2. raw material is placed in subzero 18 ° of environment freezing processing 24 hours or more；
3. by high-temperature process is carried out after freezing, redrying after impregnation after material drying that treated；
4. press curing；
It becomes a useful person 5. cutting.
The step 2. described in freezing processing be by the raw material of various different humidities by freezing after, cell interior
Moisture frost expansion, so that cell wall and extraneous interchange channel increase.3. high temperature processing is that high steam steams to the step
It boils, the high-pressure steam pressure is 0.1~0.6mpa, and the time of autoclaving, the effect of the drying was between 0.5~2t
Moisture content of the raw material after drying is 15% hereinafter, the drying can be that drying machine drying or solarization or ventilation are dried.It is described
3. high temperature is handled to enter carbonization device after raw material stoving and carrying out high temperature carbonization, the temperature of the carbonization device high temperature carbonization step
Degree is between 300 °~310 °, and the time is 3 hours.3. middle dipping process is the glue water-borne glue so that infiltrating in raw material to the step
Solid content reach between 20%~25%, when redrying, reaches the average moisture in the raw material for infiltrating glue
20% hereinafter, the raw material to be processed after redrying need to place 24 hours or more to uniform moisture.The step 3. in glue
Water is that formalin adds phenol to react the water soluble phenolic glue of generation under alkaline environment, and the formalin is to contain 20% first
The formalin of alcohol, it is then that the water soluble phenolic glue resorcinol being prepared is modified, or with organic-silicon-modified, or
With PE modified, or with nanometer Si modification or with cyanurotriamide modified, above-mentioned modifying agent ratio be 10%~15% it
Between, the glue that is thus prepared is step of the present invention 3. glue used in middle impregnation.The step 4. described in hot pressing
Raw material is placed in mold after being cured as the glue that will have been pre-processed, and the volume of the mold is 1.5~1.1/cm by density3It is set
It sets, is then fed into hot press and carries out hot-press solidifying, the hot pressing temperature is between 110 °~120 °, and the curing time is 1.1
~1.6min/mm is cooled after solidification to 80 ° of central temperature or less ejecting plates in plate.The step 5. in cut before, hot pressing
Plate afterwards should store three days or more to discharge internal stress, then be cut again.
Embodiment 2
The embodiment of the present invention 2 is described in further detail below:
A kind of production method of timber, which comprises the following steps:
1. being used as raw material after taking the leftover pieces of timber, sawdust to be crushed；
2. raw material is placed in subzero 18 ° of environment freezing processing 24 hours or more；
3. by high-temperature process is carried out after freezing, redrying after impregnation after material drying that treated；
4. press curing；
It becomes a useful person 5. cutting.
The step 2. described in freezing processing be by the raw material of various different humidities by freezing after, cell interior
Moisture frost expansion, so that cell wall and extraneous interchange channel increase.3. high temperature processing is that high steam steams to the step
It boils, the high-pressure steam pressure is 0.1~0.6mpa, and the time of autoclaving, the effect of the drying was between 0.5~2t
Moisture content of the raw material after drying is 15% hereinafter, the drying can be that drying machine drying or solarization or ventilation are dried.It is described
3. high temperature is handled to enter carbonization device after raw material stoving and carrying out high temperature carbonization, the temperature of the carbonization device high temperature carbonization step
Degree is between 300 °~310 °, and the time is 3 hours.3. middle dipping process is the glue water-borne glue so that infiltrating in raw material to the step
Solid content reach between 20%~25%, when redrying, reaches the average moisture in the raw material for infiltrating glue
20% hereinafter, the raw material to be processed after redrying need to place 24 hours or more to uniform moisture.The step 3. in glue
Water is that formalin adds phenol to react the water soluble phenolic glue of generation under alkaline environment, and the formalin is to contain 20% first
The formalin of alcohol, it is then that the water soluble phenolic glue resorcinol being prepared is modified, or with organic-silicon-modified, or
With PE modified, or with nanometer Si modification or with cyanurotriamide modified, above-mentioned modifying agent ratio be 10%~15% it
Between, the glue that is thus prepared is step of the present invention 3. glue used in middle impregnation.4. the step is compressed to cold pressing, institute
Cold pressing is stated as raw material after glue is first placed in mold, is fixed after compacting by pin, then gang mould tool adds into warming-up device together
Temperature solidification.
Claims (3)
1. a kind of production method of timber, which comprises the following steps:
1. being used as raw material after taking the leftover pieces of timber, sawdust to be crushed；
2. raw material is placed in subzero 18 ° of environment freezing processing 24 hours or more；
3. by high-temperature process is carried out after freezing, redrying after impregnation after material drying that treated；
4. press curing；
It becomes a useful person 5. cutting.
2. a kind of production method of timber according to claim 1, which is characterized in that the step 2. described in freezing
Processing is the cell interior moisture frost expansion by the raw material of various different humidities after freezing, so that cell wall and the external world
Interchange channel increase.
3. a kind of production method of timber according to claim 1, which is characterized in that 3. high temperature processing is the step
High steam boiling, the high-pressure steam pressure are 0.1~0.6mpa, and the time of autoclaving is described dry between 0.5~2t
Dry effect is that the moisture content of the raw material after drying is 15% hereinafter, the drying can be drying machine drying or solarization or ventilation
It dries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119971.2A CN109333720A (en) | 2018-09-25 | 2018-09-25 | A kind of production method of timber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119971.2A CN109333720A (en) | 2018-09-25 | 2018-09-25 | A kind of production method of timber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109333720A true CN109333720A (en) | 2019-02-15 |
Family
ID=65306886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811119971.2A Withdrawn CN109333720A (en) | 2018-09-25 | 2018-09-25 | A kind of production method of timber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109333720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319877A (en) * | 2022-08-29 | 2022-11-11 | 广西壮族自治区林业科学研究院 | Wood surface densification treatment method |
-
2018
- 2018-09-25 CN CN201811119971.2A patent/CN109333720A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319877A (en) * | 2022-08-29 | 2022-11-11 | 广西壮族自治区林业科学研究院 | Wood surface densification treatment method |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190215 |
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| WW01 | Invention patent application withdrawn after publication |