CN1079687A - The manufacturing of sheet material - Google Patents
The manufacturing of sheet material Download PDFInfo
- Publication number
- CN1079687A CN1079687A CN93106167A CN93106167A CN1079687A CN 1079687 A CN1079687 A CN 1079687A CN 93106167 A CN93106167 A CN 93106167A CN 93106167 A CN93106167 A CN 93106167A CN 1079687 A CN1079687 A CN 1079687A
- Authority
- CN
- China
- Prior art keywords
- raw material
- glue
- dry
- sheet material
- gummed
- 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.)
- Granted
Links
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
- 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
- B27N1/003—Pretreatment of moulding material for reducing formaldehyde gas emission
-
- 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
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
Landscapes
- 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)
- Paper (AREA)
- Laminated Bodies (AREA)
- Multicomponent Fibers (AREA)
- Artificial Filaments (AREA)
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Harvester Elements (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A kind of dry method is made the method for fiberboard, will contain raw material decomposition, gummed, the drying of lignin fibre, makes net, then compacting.Before defibre, raw material is handled with the dipping solution that contains the fiber surface activity agent.
Description
The present invention relates to contain the sheet material of lignin fibre, as the manufacturing of fiberboard.
This class sheet material is by such manufacturing: raw material is resolved into the particulate of fibre-bearing bundle and fiber, add glue in the raw material that is decomposed, then with dried feed and be paved into nettedly, compacting forms sheet material with solidified glue under heating up.Fiberboard is by the raw material that obtains through defibre, promptly by or many or or few wandering fibre make.
Usually used adhesive is a urea formaldehyde glue, and can be incorporated in the raw material that is decomposed.The glue consumption can be 6% or more.Because glue is more expensive relatively, thereby the addition of glue need be reduced to minimum.But a spot of glue also can reduce the intensity of the sheet material of finishing, and says from this respect, needs to select to add the amount of glue.
When the raw material of drying gummed, a large amount of or a spot of water-soluble formaldehyde evaporate from glue.After separating from the dry gas in the fibrous raw material, in cyclic ketones, liquid components will condense from gas.In the clean method of routine, water-soluble formaldehyde can make troubles.When it comes out from the sheet material of finishing continuously, the formaldehyde in the compacting raw material also can make troubles.Behind raw material drying, when adding glue therein, the trouble that can bring formaldehyde when compacting, to separate out and from the sheet material of finishing, separate.
Fiberboard according to the dry method manufacturing claims the MDF(medium density fibre board (MDF) usually), it is the sheet material that is made by wood-fibred, its output surpasses 95%.Raw material is wooden section preferably, and can be under low relatively input energy 100-500kWh/ton fiber defibre so that freeization of fiber.The fibrous raw material that separates is through gummed, and drying is paved into nettedly, suppresses under hot pressing then.Also can select dried feed is carried out before gummed.Raw material normally is preheating to about 150 ℃ before defibre, carry out the defibre operation then under high temperature, pressure; To promote fiber free.But under such high temperature, raw material also can be degraded because running into hydrolysis and turn pale.The short time heating can reduce this deficiency, then can't avoid but turn pale, and can increase energy consumption in the identical time.
Normally urea formaldehyde glue is gone up or separated in the mixed equipment at the conveyer belt that leads to defibre equipment (discharge band) with fibrous raw material and mix.The amount of mixed glue is 6% or more.
When high-temperature gas in the fibrous raw material tube drier afterwards is dry, from glue, give out a large amount of or a spot of water-soluble formaldehyde.When above-mentioned reaction began, formaldehyde and the fibrous raw material that is used for suppressing at last can make troubles, when it comes out from the sheet material of finishing continuously.Can in the fiberboard manufacturing, finish in the special applications of gluing together again after the dried feed.
The present invention can reduce above-mentioned trouble, also has more benefits simultaneously.According to the present invention, fibrous raw material and a kind of dipping solution reaction that contains the fiber surface activity agent, and preheating before final the decomposition.
The embodiment of these chemicals can act on lignin, such as Na
2SO
3And NaHSO
2The amount of these chemicals is the 1-30kg/ton raw material, as with Na
2SO
3Meter according to the present invention, can increase the ISO fineness of end-product, reducing the energy consumption of defibre, and glue quantity is reduced or gains in strength under constant glue quantity keeping intensity.In addition, reduced the fractional dose of formaldehyde.
Hereinafter will specifically describe the present invention in conjunction with some content.
Fiberboard is to make by the raw material of saturated sliced form, for example, contains the cork chemicals that acts on lignin, as: Na
2SO
3And NaHSO
3, its amount is for 1-30, is preferably the 10-20kg/ton fibrous raw material as with Na
2SO
3Meter.
Maceration need carry out fast, and can be detained a few minutes.Temperature is raised to 150-200 ℃ then, preferably 160-180 ℃, about 2-3 minute.Preheating simultaneously can prior to or carry out simultaneously in infiltration.The pH value remains between the 2-12.Have Na
2SO
3And NaHSO
3Dipping solution contain HSO
- 3And/or SO
2- 3The inferior sulfate radical of form.Available NaOH suitably controls the pH value.Because this chemicals effect (sulfonation), the comparable regular input energy of later defibre hangs down the required defibre degree that proceeds to.Energy consumes average out to 50-400kWh/ton fibrous material.The energy of being saved is conventional 10% of the fiber energy that decomposes.
Through maceration, the fineness of final fiberboard can increase.
Decompose as for fiber in the raw material that decomposes, find that tiny raw material composition and chip composition have all reduced, that is: the ratio of principal fiber increases.
Find that also according to maceration of the present invention, the intensity of sheet material is improved.Tensile strength and elastic modelling quantity and fiber key increase by 10% at least.And this effect has also reduced the glue addition of keeping the intensity rate.The fiber key increases by 10% and is equivalent to reduce 1% glue addition.The present invention has also used sulfonating reaction, can reduce formaldehyde and separate, and by having sulfite ion in the dipping solution reaction that contains formaldehyde, can be combined in the fibrous raw material, and can not come out from the sheet material product.
Embodiment
To be immersed in the different impregnation process liquid with the raw material of section shape.In each batch, section per ton contains 10kg NaHSO
3Control group need not flood.
Two different batch of materials are preheating to about 170 ℃, then defibre.In the strip behind defibre, add E2 type ureaformaldehyde glue, amount is 10% dried glue (is benchmark in dried fiber).Then, raw material drying is reached 90% siccative composition.The fiber of drying is formed net, then with about 1.5MPa precompressed and at 170 ℃ of following hot pressing 5-6 minutes.Measure the intensity of the sheet material of making thus, ISO fineness and formaldehyde composition (perforation value).Measure the relative energy consumption of different batch of materials simultaneously.The result is as follows:
Performance contrast Na
2SO
3NaHSO
3
Group group group
Adhesion strength MPa 38.4 43.8 40.0
Average bond strength MPa 1.8 2.1 2.0
ISO fineness % 24 26 26
Formaldehyde ingredient m gCH
2O/100g 27 20 18
Relative energy consumes 1.0 0.95 0.95
The result has confirmed above-mentioned technique effect.
But the present invention is not limited to the content of above-mentioned concrete enforcement, can change in the inventive concept scope.
Claims (5)
1, a kind of method according to dry method manufacturing fiberboard originates in the material that contains lignin fibre, through decomposing, gummed, drying is made net and is suppressed then, it is characterized in that, before material breakdown, use the fiber surface activity agent that contains the 1-30kg/ton fibrous raw material, as Na
2SO
3Dipping solution handle, be preheating to 150-200 ℃ then, and the pH value remains between the 2-12, and decomposition reaction is carried out under the input energy of 50-400kWh/ton fibrous raw material.
2, the method for claim 1 is characterized in that, described fiber surface activity agent is the surfactant that acts on the type of lignin.
3, method as claimed in claim 2 is characterized in that, described dipping solution contains Na
2SO
3And/or NaHSO
3
As each described method among the claim 1-3, it is characterized in that 4, the raw material of described decomposition is gummed earlier, dry before making net then.
As each described method among the claim 1-3, it is characterized in that 5, described decomposition raw material is dry earlier, glues together then before making net.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9201800A SE470330B (en) | 1992-06-11 | 1992-06-11 | Process for making fiberboard according to the dry method |
| SE9201800-1 | 1992-06-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1079687A true CN1079687A (en) | 1993-12-22 |
| CN1029461C CN1029461C (en) | 1995-08-09 |
Family
ID=20386472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93106167A Expired - Fee Related CN1029461C (en) | 1992-06-11 | 1993-05-20 | Manutacture of board |
Country Status (29)
| Country | Link |
|---|---|
| EP (1) | EP0647174B1 (en) |
| JP (1) | JPH07507735A (en) |
| KR (1) | KR950701267A (en) |
| CN (1) | CN1029461C (en) |
| AT (1) | ATE143625T1 (en) |
| AU (1) | AU662432B2 (en) |
| BR (1) | BR9306513A (en) |
| CA (1) | CA2136537A1 (en) |
| CZ (1) | CZ281548B6 (en) |
| DE (1) | DE69305165T2 (en) |
| DK (1) | DK0647174T3 (en) |
| ES (1) | ES2095060T3 (en) |
| FI (1) | FI97032C (en) |
| HR (1) | HRP930967A2 (en) |
| HU (1) | HU213466B (en) |
| ID (1) | ID841B (en) |
| IL (1) | IL105811A (en) |
| MY (1) | MY131192A (en) |
| NO (1) | NO944779D0 (en) |
| NZ (1) | NZ253367A (en) |
| PL (1) | PL170405B1 (en) |
| RU (1) | RU2083359C1 (en) |
| SE (1) | SE470330B (en) |
| SI (1) | SI9300293A (en) |
| SK (1) | SK153094A3 (en) |
| TR (1) | TR28107A (en) |
| TW (1) | TW223036B (en) |
| WO (1) | WO1993025358A1 (en) |
| ZA (1) | ZA934108B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786286A (en) * | 2010-04-20 | 2010-07-28 | 东北林业大学 | Manufacturing method for modified enzymolysis lignin composite board |
| CN109986676A (en) * | 2019-04-06 | 2019-07-09 | 安徽凯彦达环保餐具有限公司 | A kind of production technology for the disposable lunch-box that can be degraded in a natural environment |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR22594A (en) * | 1987-04-07 | 1987-12-15 | Nur Emaye San Ve Tic Tic A S | STOVE PIPE EXTENSION APPARATUS |
| DE4327774A1 (en) * | 1993-08-18 | 1995-02-23 | Fraunhofer Ges Forschung | Process for the production of medium density fibreboard (MDF) |
| PL184356B1 (en) | 1996-04-12 | 2002-10-31 | Marlit Ltd | Method of obtaining composite lignocellulose materials |
| GB9625068D0 (en) * | 1996-12-02 | 1997-01-22 | Marlit Ltd | Method for production of lignocellulosic composite materials |
| ATE244626T1 (en) | 1996-12-09 | 2003-07-15 | Plato Internat Technology B V | METHOD FOR PRODUCING CELLULOSE FIBER ASSEMBLY |
| JP2001512058A (en) * | 1997-07-11 | 2001-08-21 | マーリット リミテッド | Production of composite boards |
| EP1799412B1 (en) * | 2004-10-15 | 2011-01-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for reducing the release of volatile organic compounds (voc) from wood and wood chip products and wood materials derived therefrom in particular particle boards |
| LT1907178T (en) * | 2005-07-27 | 2016-11-10 | Kronoplus Technical Ag | Method for production of wood material articles with low emissions of chemical compounds |
| SE530084C2 (en) * | 2006-09-04 | 2008-02-26 | Metso Panelboard Ab | Manufacture of wood fiber board containing on-site generated formaldehyde |
| DE102007054123B4 (en) | 2006-11-15 | 2012-03-15 | Edmone Roffael | Process for the production of fiberboard with reduced formaldehyde emission, high moisture resistance and hydrolysis resistance of the gluing |
| DE102007038041A1 (en) † | 2007-08-10 | 2009-02-12 | Kronotec Ag | Method for preventing the emission of aldehydes and volatile organic compounds from wood-based materials |
| DE102008023007A1 (en) | 2007-11-11 | 2010-06-02 | Roffael, Edmone, Prof. Dr.-Ing. | Method for producing moisture-resistant and hydrolysis-resistant medium density fiberboard from e.g. derived timber product, involves using chemicals for pulping, where chemicals partially or completely replace resin in gluing phase |
| DE102007055415C5 (en) * | 2007-11-19 | 2018-11-29 | SWISS KRONO Tec AG | Method for reducing the emission of saturated and unsaturated aldehydes from wood-based materials |
| DE102008050428A1 (en) | 2008-10-08 | 2010-06-10 | Roffael, Edmone, Prof. Dr.-Ing. | Medium-density fiberboard manufacturing method, involves performing disintegration of fiber plates in presence of accelerator provided for alkaline hardening phenol formaldehyde resin and as potassium carbonate and/or sodium carbonate |
| CN104690804B (en) * | 2015-02-14 | 2017-07-18 | 广西丰林木业集团股份有限公司 | A kind of manufacture method of electro-magnetic screen function fiberboard |
| EP3059056A1 (en) * | 2015-02-23 | 2016-08-24 | Basf Se | Method for producing wood fibres and wood fibre boards |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD205382A1 (en) * | 1981-12-23 | 1983-12-28 | Heinz Pecina | METHOD FOR ACTIVATING WOODEN PARTICLES FOR WOOD PRODUCTION OF MATERIALS |
| DD242193A1 (en) * | 1985-11-06 | 1987-01-21 | Univ Dresden Tech | METHOD FOR PRODUCING WOOD MATERIALS |
| SE466060C (en) * | 1990-02-13 | 1995-09-11 | Moelnlycke Ab | Absorbent chemitermomechanical mass and preparation thereof |
| SU1721149A1 (en) * | 1990-06-25 | 1992-03-23 | Центральный научно-исследовательский институт бумаги | Method of producing thermochemically-treated pulp |
| SU1724763A1 (en) * | 1990-07-10 | 1992-04-07 | Центральный научно-исследовательский институт бумаги | Method of producing bleached wood pulp |
-
1992
- 1992-06-11 SE SE9201800A patent/SE470330B/en not_active IP Right Cessation
-
1993
- 1993-05-04 CA CA002136537A patent/CA2136537A1/en not_active Abandoned
- 1993-05-04 DE DE69305165T patent/DE69305165T2/en not_active Revoked
- 1993-05-04 JP JP6501367A patent/JPH07507735A/en active Pending
- 1993-05-04 HU HU9403101A patent/HU213466B/en not_active IP Right Cessation
- 1993-05-04 DK DK93913692.5T patent/DK0647174T3/en active
- 1993-05-04 BR BR9306513A patent/BR9306513A/en not_active Application Discontinuation
- 1993-05-04 WO PCT/SE1993/000388 patent/WO1993025358A1/en not_active Application Discontinuation
- 1993-05-04 ES ES93913692T patent/ES2095060T3/en not_active Expired - Lifetime
- 1993-05-04 EP EP93913692A patent/EP0647174B1/en not_active Revoked
- 1993-05-04 AU AU43633/93A patent/AU662432B2/en not_active Ceased
- 1993-05-04 PL PL93306760A patent/PL170405B1/en unknown
- 1993-05-04 RU RU9394046252A patent/RU2083359C1/en active
- 1993-05-04 AT AT93913692T patent/ATE143625T1/en not_active IP Right Cessation
- 1993-05-04 SK SK1530-94A patent/SK153094A3/en unknown
- 1993-05-04 CZ CZ943088A patent/CZ281548B6/en unknown
- 1993-05-04 KR KR1019940703807A patent/KR950701267A/en not_active Application Discontinuation
- 1993-05-04 NZ NZ253367A patent/NZ253367A/en unknown
- 1993-05-17 TW TW082103924A patent/TW223036B/zh active
- 1993-05-20 CN CN93106167A patent/CN1029461C/en not_active Expired - Fee Related
- 1993-05-21 MY MYPI93000970A patent/MY131192A/en unknown
- 1993-05-25 IL IL10581193A patent/IL105811A/en not_active IP Right Cessation
- 1993-06-02 SI SI9300293A patent/SI9300293A/en unknown
- 1993-06-08 ID IDP614393A patent/ID841B/en unknown
- 1993-06-10 ZA ZA934108A patent/ZA934108B/en unknown
- 1993-06-11 TR TR00460/93A patent/TR28107A/en unknown
- 1993-06-11 HR HR930967A patent/HRP930967A2/en not_active Application Discontinuation
-
1994
- 1994-12-09 NO NO944779A patent/NO944779D0/en unknown
- 1994-12-09 FI FI945790A patent/FI97032C/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786286A (en) * | 2010-04-20 | 2010-07-28 | 东北林业大学 | Manufacturing method for modified enzymolysis lignin composite board |
| CN109986676A (en) * | 2019-04-06 | 2019-07-09 | 安徽凯彦达环保餐具有限公司 | A kind of production technology for the disposable lunch-box that can be degraded in a natural environment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |