CN106956347A - A kind of production method of medium/high density fiber board - Google Patents
A kind of production method of medium/high density fiber board Download PDFInfo
- Publication number
- CN106956347A CN106956347A CN201710193688.3A CN201710193688A CN106956347A CN 106956347 A CN106956347 A CN 106956347A CN 201710193688 A CN201710193688 A CN 201710193688A CN 106956347 A CN106956347 A CN 106956347A
- Authority
- CN
- China
- Prior art keywords
- hot pressing
- fiber
- glue
- defibrator
- production
- 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.)
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Classifications
-
- 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
- B27N3/10—Moulding of mats
- B27N3/12—Moulding of mats from fibres
-
- 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
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The present invention is intended to provide the production method and product of a kind of medium/high low density fiberboard, its production stage are as follows：A) after wood fibre is separated, screened, electrical heating is steamed, handled through defibrator grinding chamber body and fiber is made；B) by the fiber of defibrator grinding chamber body output through blow line output；C) ecological glue isocyanate glue is pumped into the porch in drying duct, sprayed through high pressure nozzle by being glued screw pump, with dry fiber mix and uniform, then proceed drying in drying duct together；D) fiber after applying glue is handled carries out hot pressing on hot press；The step b) and c) for simultaneously progress；The step a) will be 700 820kg/m through the mach fibril materials applied amount of defibrator process3；The ecological glue isocyanate glue resin addeds of the step c) are 18 21kg/m3；Parameter during the step d) hot pressing：Pressure coefficient is 5.4 7.6s/mm；Hot pressing pressure is 28 390kg/cm2, the 1100mm/s of hot pressing speed 330,180 250 DEG C of hot pressing temperature, the 1.95min of hot pressing time 0.56.Present invention reduces the cost of production NAF grade fibre board products, production efficiency is improved.
Description
Technical field
The invention belongs to Fibreboard Production technical field, it is related to a kind of production method of medium/high density fiber board.
Background technology
Urea-formaldehyde glue would generally be used in common density board manufacturing process, and urea-formaldehyde glue is a kind of formaldehyde compounds, so
Density board day is born with containing formaldehyde.
At present in the world, it is divided into four levels of E2, E1, E0, NAF (being not added with glutol) according to burst size of methanal grade
Not, i.e. E2≤30mg/100g, E1≤9mg/100g (European Union 8mg/100g), E0≤3mg/100g, NAF≤0.06ppm are (about
0.5mg/100g), NAF ranks are that the amount containing formaldehyde is less than or equal to 0.5mg/100g in every 100g board samples.
However, only have a few countries such as Finland, Japan, the U.S. to perform NAF grades of standards in the world at present, it is domestic also without not
Addition formaldehyde adhesive is NAF grades of product standard appearances.Moreover, the production of NAF rank high standard sheet materials, to the production skill of producer
Art requires very high, and production cost is high, and consumption is big.
The content of the invention
It is an object of the invention in order to overcome the disadvantages mentioned above of existing production technology, there is provided a kind of medium/high density fiber
The production method of plate, the technical solution adopted by the present invention is：
A kind of production method of medium/high density fiber board, its production stage is as follows：
A) after wood fibre is separated, washed, electrical heating is steamed, handled through defibrator grinding chamber body and fiber is made；
B) fiber of the defibrator grinding chamber body output, output to the blow line being connected with defibrator；
C) by ecological glue isocyanate glue by being glued the porch that screw pump is pumped into blow line, adhesive is through high pressure
Nozzles spray with the fiber of the output mix and uniform on fiber；
D) enter after the fiber is well mixed with the adhesive and be dried in drying duct；
E) after drying, the fiber after applying glue is handled is again through carrying out hot pressing on hot press；
The step a) will be 700-820kg/m through the mach fibril materials applied amount of defibrator process3；
The ecological glue isocyanate glue resin addeds of the step c) are 18-21kg/m3；
Parameter during the step e) hot pressing：Pressure coefficient is 5.4-7.6s/mm；Hot pressing pressure is 28-390kg/cm2, heat
Press speed 330-1100mm/s, 180-250 DEG C of hot pressing temperature, hot pressing time 0.56-1.95min.
It is preferred that, step a) the electrical heating steam injection time is 2-5min, and spray temperature is 160-180 DEG C.
The sizing equipment of the ecological glue isocyanate glue and the sizing equipment of urea-formaldehyde resin adhesive are used separately, to ensure life
State glue isocyanate glue is not polluted by formaldehyde.
Beneficial effects of the present invention are：
The above-mentioned technological parameter of the present invention, can be with machined parameters in existing equipment in order that meeting target level of product quality requirement
In the range of, NAF grades of sheet material is produced, while ensureing production capacity, the volume production of NAF grades of sheet material is realized, and parameter used can
The cost consumption of realization is not very big；In addition, the present invention can significantly reduce medium/high density fiber using ecological isocyanate glue
The content of plate free formaldehyde, obtains the medium/high density fiber board of low formaldehyde content, reduces the small-molecule substance of a large amount of decomposing formaldehydes
Add, greatly reduce the production cost of fiberboard.
Embodiment
The present invention is explained below.
Embodiment 1：
By timber peeling, screening, electrical heating is steamed, and steam injection time is 2min, and boiling temperature is 160 DEG C；Through defibrator plus
The fibril materials applied amount of work is 700kg/m3, ecological glue isocyanate glue resin added 18kg/m3, pressure coefficient is 5.4mm；
Hot pressing pressure 28kg/cm2, hot pressing speed 330mm/s, 185 DEG C of hot pressing temperature, hot pressing time is 0.56min.
Case study on implementation 2：
By timber peeling, screening, electrical heating is steamed, and steam injection time is 5min, and boiling temperature is 180 DEG C；Through defibrator plus
The fibril materials applied amount of work is 820kg/m3, ecological glue isocyanate glue resin added 21kg/m3, pressure coefficient is 7.6s/
mm；Hot pressing pressure 390kg/cm2, hot pressing speed 1100mm/s, 250 DEG C of hot pressing temperature, hot pressing time is 1.95min.
Case study on implementation 3：
By timber peeling, screening, electrical heating is steamed, and steam injection time is 3min, and boiling temperature is 170 DEG C；Through defibrator plus
The fibril materials applied amount of work is 750kg/m3, ecological glue isocyanate glue resin added 19kg/m3, pressure coefficient is 7.0s/
mm；Hot pressing pressure 250kg/cm2, hot pressing speed 800mm/s, 230 DEG C of hot pressing temperature, hot pressing time is 1.43min.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and changed.Therefore, the invention is not limited in embodiment disclosed and described above, to the present invention's
Some modifications and changes should also be as falling into the scope of the claims of the present invention.Although in addition, being used in this specification
Some specific terms, but these terms are merely for convenience of description, do not constitute any limitation to the present invention.
Claims (2)
1. a kind of production method of medium/high density fiber board, its production stage is as follows：
A) after wood fibre is separated, screened, electrical heating is steamed, handled through defibrator grinding chamber body and fiber is made；
B) fiber of the defibrator grinding chamber body output, output to the blow line being connected with defibrator；
C) by ecological glue isocyanate glue by being glued the porch that screw pump is pumped into blow line, adhesive is through high pressure nozzle
It is sprayed on fiber, with the fiber of the output mix and uniform；
D) enter after the fiber is well mixed with the adhesive and be dried in drying duct；
E) after drying, the fiber after applying glue is handled is again through carrying out hot pressing on hot press；
The step a) will be 700-820kg/m through the mach fibril materials applied amount of defibrator process3；
The ecological glue isocyanate glue resin addeds of the step c) are 18-21kg/m3；
Parameter during the step e) hot pressing：Pressure coefficient is 5.4-7.6s/mm；Hot pressing pressure is 28-390kg/cm2, hot pressing speed
330-1100mm/s, 180-250 DEG C of hot pressing temperature, hot pressing time 0.56-1.95min.
2. the production method of fiberboard according to claim 1, it is characterised in that：Step a) the electrical heating steam injection times
For 2-5min, spray temperature is 160-180 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193688.3A CN106956347A (en) | 2017-03-28 | 2017-03-28 | A kind of production method of medium/high density fiber board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193688.3A CN106956347A (en) | 2017-03-28 | 2017-03-28 | A kind of production method of medium/high density fiber board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106956347A true CN106956347A (en) | 2017-07-18 |
Family
ID=59471606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710193688.3A Pending CN106956347A (en) | 2017-03-28 | 2017-03-28 | A kind of production method of medium/high density fiber board |
Country Status (1)
| Country | Link |
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| CN (1) | CN106956347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009474A (en) * | 2017-03-28 | 2017-08-04 | 曾华 | A kind of fiberboard steams the production method of slab speed-raising |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214679A (en) * | 2007-12-26 | 2008-07-09 | 广西丰林木业集团股份有限公司 | Medium density fiberboard with low burst size of methanal and producing method thereof |
| CN101234504A (en) * | 2008-03-04 | 2008-08-06 | 南京林业大学 | Method for manufacturing flash evaporation defibricating glue-free light corps stalk fibrous composite material |
| CN101254607A (en) * | 2007-07-20 | 2008-09-03 | 湖北宝源木业有限公司 | Pure pine beaverboard preparation |
| CN103496025A (en) * | 2013-09-26 | 2014-01-08 | 广西三威林产工业有限公司 | Method for manufacturing ultra-low formaldehyde emission medium-to-high density fiberboard |
| CN105150338A (en) * | 2015-08-24 | 2015-12-16 | 广西三威林产工业有限公司 | Manufacturing method for formaldehyde-free medium and high density fiber panel |
| CN105150347A (en) * | 2015-07-15 | 2015-12-16 | 百仪家具有限公司 | High-density composite fibers toughened with palm fibers and preparation method of high-density composite fibers |
| CN105150350A (en) * | 2015-08-24 | 2015-12-16 | 广西三威林产工业有限公司 | Manufacturing method for high-dampproof medium and high density fiber panel |
-
2017
- 2017-03-28 CN CN201710193688.3A patent/CN106956347A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254607A (en) * | 2007-07-20 | 2008-09-03 | 湖北宝源木业有限公司 | Pure pine beaverboard preparation |
| CN101214679A (en) * | 2007-12-26 | 2008-07-09 | 广西丰林木业集团股份有限公司 | Medium density fiberboard with low burst size of methanal and producing method thereof |
| CN101234504A (en) * | 2008-03-04 | 2008-08-06 | 南京林业大学 | Method for manufacturing flash evaporation defibricating glue-free light corps stalk fibrous composite material |
| CN103496025A (en) * | 2013-09-26 | 2014-01-08 | 广西三威林产工业有限公司 | Method for manufacturing ultra-low formaldehyde emission medium-to-high density fiberboard |
| CN105150347A (en) * | 2015-07-15 | 2015-12-16 | 百仪家具有限公司 | High-density composite fibers toughened with palm fibers and preparation method of high-density composite fibers |
| CN105150338A (en) * | 2015-08-24 | 2015-12-16 | 广西三威林产工业有限公司 | Manufacturing method for formaldehyde-free medium and high density fiber panel |
| CN105150350A (en) * | 2015-08-24 | 2015-12-16 | 广西三威林产工业有限公司 | Manufacturing method for high-dampproof medium and high density fiber panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009474A (en) * | 2017-03-28 | 2017-08-04 | 曾华 | A kind of fiberboard steams the production method of slab speed-raising |
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Application publication date: 20170718 |
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