EP0639434B2 - Verfahren zur Herstellung von mitteldichten Holzfaserplatten (MDF) - Google Patents
Verfahren zur Herstellung von mitteldichten Holzfaserplatten (MDF) Download PDFInfo
- Publication number
- EP0639434B2 EP0639434B2 EP19940111375 EP94111375A EP0639434B2 EP 0639434 B2 EP0639434 B2 EP 0639434B2 EP 19940111375 EP19940111375 EP 19940111375 EP 94111375 A EP94111375 A EP 94111375A EP 0639434 B2 EP0639434 B2 EP 0639434B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- wood
- digested
- resin
- mdf
- fibers
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 24
- 229920002522 Wood fibre Polymers 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title description 11
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 24
- 239000002023 wood Substances 0.000 claims description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 claims description 10
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 125000005442 diisocyanate group Chemical group 0.000 claims description 3
- 235000018553 tannin Nutrition 0.000 claims description 3
- 229920001864 tannin Polymers 0.000 claims description 3
- 239000001648 tannin Substances 0.000 claims description 3
- 238000004537 pulping Methods 0.000 claims description 2
- JZLWSRCQCPAUDP-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-triamine;urea Chemical compound NC(N)=O.NC1=NC(N)=NC(N)=N1 JZLWSRCQCPAUDP-UHFFFAOYSA-N 0.000 claims 2
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 claims 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims 2
- 239000000126 substance Substances 0.000 description 6
- 239000000123 paper Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000002025 wood fiber Substances 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011094 fiberboard Substances 0.000 description 2
- 241000218631 Coniferophyta Species 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- 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
Definitions
- the invention relates to a method for producing medium-density fibreboard according to the preamble of the main claim.
- the wood is first cut into a schnitzel with a Size of about 20 mm x 5 mm crushed and the resulting wood chips washed to remove the adhering foreign matter (especially sand). Then the schnitzel is steamed for a few minutes and one Treated temperature of about 160 ° C and then fed to a defibrator, where it is frayed into single fibers or small tufts of fibers between grinding disks become.
- the fiber becomes a binder such as urea-formaldehyde resin (UF resin), mixed resin made of urea and melamine (MUF resin), Phenol formaldehyde resin (PF resin), tannin formaldehyde resin (TF resin) or diisocyanate adhesive HPMDI added.
- UF resin urea-formaldehyde resin
- MAF resin mixed resin made of urea and melamine
- PF resin Phenol formaldehyde resin
- TF resin tannin formaldehyde resin
- HPMDI diisocyanate adhesive
- the binder can also be added to the fibers after drying.
- the fibers run through a special glue application drum.
- the dried and glued pulp is fed to a molding machine where it is sprinkled on a sieve that moves at high speed.
- the mats formed in this way are then pressed into sheets.
- the older but not prepublished EP-B-0 647 174 describes a process for the production of medium-density wood fiber boards in which wood fibers provided with urea-formaldehyde resin as binders are formed into fiber mats and pressed into boards at elevated temperature.
- the wood or the wood chips are chemically digested for the production of the fibers, Na 2 SO 3 and / or NaHSO 3 being used as the disintegrating agent.
- the fibers thus produced are fed to the further process without being washed out.
- the pH value of the impregnation solution is kept between 2 and 12 and can advantageously be controlled by NaOH.
- the object of the present invention is to provide a simple method which makes it possible to reduce the formaldehyde release of the MDF produced, without having to treat the plates afterwards.
- the fibers are glued in a manner known per se with one of the binders mentioned, scattered into mats and pressed into sheets. It has surprisingly been found that such MDFs have a relatively low release of formaldehyde and that, moreover, the boards produced by this process have better mechanical-technological properties than the boards which are made from fibers which have undergone thermomechanical refiner digestion (TMP). Procedure) are open-minded.
- the CTMP process known per se is a process for producing wood materials from wood chips or other wood comminution products. In the production of CTMP (chemo-thermo-mechanical pulps), the wood chips are impregnated with chemicals such as Na 2 SO 3 under and without the addition of NaOH at high temperatures (140 ° C ... 170 ° C) and then fiberized at high temperatures , The fibers obtained are used on their own or in combination with other fibers (e.g. waste paper) for the production of newsprint and other types of paper (e.g. tissue paper).
- CTMP thermomechanical refiner digestion
- the binders used in the process according to the invention are those known in the manufacture of MDF (medium density fiberboard) Binders such as urea-melamine resin (MUF), phenol formaldehyde resin (PF resin), Tannin formaldehyde resin (TF resin) or an adhesive based on polymers Diisocyanates (PMDI) used.
- MDF medium density fiberboard
- Binders such as urea-melamine resin (MUF), phenol formaldehyde resin (PF resin), Tannin formaldehyde resin (TF resin) or an adhesive based on polymers Diisocyanates (PMDI) used.
- the method according to the invention is also suitable for the use of hardwoods.
- the wood or the wood chips are digested with chemicals such as Na 2 SO 3 or with NaOH.
- the wood is digested with a mixture of Na 2 SO 3 and NaOH.
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4327774 | 1993-08-18 | ||
DE19934327774 DE4327774A1 (de) | 1993-08-18 | 1993-08-18 | Verfahren zur Herstellung von mitteldichten Holzfaserplatten (MDF) |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0639434A1 EP0639434A1 (de) | 1995-02-22 |
EP0639434B1 EP0639434B1 (de) | 1996-09-18 |
EP0639434B2 true EP0639434B2 (de) | 2004-01-07 |
Family
ID=6495480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19940111375 Expired - Lifetime EP0639434B2 (de) | 1993-08-18 | 1994-07-21 | Verfahren zur Herstellung von mitteldichten Holzfaserplatten (MDF) |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0639434B2 (es) |
DE (2) | DE4327774A1 (es) |
DK (1) | DK0639434T4 (es) |
ES (1) | ES2094601T5 (es) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007054123A1 (de) | 2006-11-15 | 2008-07-31 | Roffael, Edmone, Prof. Dr.-Ing. | Verfahren zur Herstellung von Holzfaserplatten mit verringerter Formaldehydemission, hoher Feuchtebeständigkeit und Hydrolyseresistenz der Verleimung |
DE102008023007A1 (de) | 2007-11-11 | 2010-06-02 | Roffael, Edmone, Prof. Dr.-Ing. | Verfahren zur Herstellung von Holzfaserplatten mit verringerter Formaldehydemission, hoher Feuchtebeständigkeit und Hydrolyseresistenz der Verleimung |
CN102268832A (zh) * | 2011-07-15 | 2011-12-07 | 芬欧汇川(常熟)纸业有限公司 | 使用落叶松化机浆生产中高档文化用纸的制浆造纸工艺 |
EP3178622A1 (de) | 2015-12-07 | 2017-06-14 | SWISS KRONO Tec AG | Holzwerkstoffplatte mit reduzierter emission an flüchtigen organischen verbindungen (vocs) und verfahren zu deren herstellung |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19704054C2 (de) * | 1997-02-04 | 2000-08-10 | Stockhausen Chem Fab Gmbh | Verfahren zur Herstellung von Faserstoffen mit verbesserten Eigenschaften |
SE513336C2 (sv) * | 1998-10-14 | 2000-08-28 | Tetra Laval Holdings & Finance | Fiberskiva av MDF-typ, sätt att framställa densamma, samt användning av återvunna cellulosafibrer för tillverkning av sådana fiberskivor |
EP1799412B1 (de) * | 2004-10-15 | 2011-01-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur verminderung der abgabe von flüchtigen organischen verbindungen (voc) aus holz und holzzerkleinerungsprodukten und aus daraus hergestellten holzwerkstoffen, insbesondere holzspanplatten |
DE102005019627B3 (de) * | 2005-04-26 | 2006-10-26 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung von mitteldichten Faserplatten und Faserformteilen mit verringerter Emission und niedriger Dickenquellung |
DE102010053467A1 (de) | 2010-12-03 | 2012-06-06 | Edmone Roffael | Verfahren zur Verminderung der Dickenquellung und Wasseraufnahme von Faserplatten |
CN102677501B (zh) * | 2012-05-29 | 2015-04-22 | 宜宾丝丽雅集团有限公司 | 一种本色未漂针叶木和阔叶木复合纸浆改性制备溶解浆的备料工艺 |
US20180298195A1 (en) | 2015-04-21 | 2018-10-18 | Kastamonu Entegre Agac Sanayi Anonim Sirketi | Production process of the resins containing polyflavonoid and derivatives and their application in the wood based composite board products |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE403893C (sv) * | 1977-02-03 | 1984-10-29 | Ry Ab | Sett att befria spanskivor fran formaldehyd genom behandling med ammoniak uder bildning av hexametylentetraamin |
SE436368B (sv) * | 1979-01-12 | 1984-12-03 | Sunds Defibrator | Sett att framstella blekta, mekaniska, kemimekaniska och halvkemiska massor av lignocellulosahaltiga fibermaterial |
WO1992012836A1 (en) * | 1991-01-23 | 1992-08-06 | Aci Australia Limited | Building substrate and method of manufacturing same |
SE470330B (sv) * | 1992-06-11 | 1994-01-24 | Sunds Defibrator Ind Ab | Förfarande för framställning av fiberboard enligt torra metoden |
JP2001501547A (ja) * | 1992-06-12 | 2001-02-06 | アルミナム カンパニー オブ アメリカ | 非平面を有する多層構造の製造方法 |
SE502663C2 (sv) * | 1993-05-19 | 1995-12-04 | Sunds Defibrator Ind Ab | Förfarande för framställning av skivor av lignocellulosahaltigt material |
-
1993
- 1993-08-18 DE DE19934327774 patent/DE4327774A1/de not_active Withdrawn
-
1994
- 1994-07-21 DK DK94111375T patent/DK0639434T4/da active
- 1994-07-21 ES ES94111375T patent/ES2094601T5/es not_active Expired - Lifetime
- 1994-07-21 DE DE59400679T patent/DE59400679D1/de not_active Expired - Lifetime
- 1994-07-21 EP EP19940111375 patent/EP0639434B2/de not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007054123A1 (de) | 2006-11-15 | 2008-07-31 | Roffael, Edmone, Prof. Dr.-Ing. | Verfahren zur Herstellung von Holzfaserplatten mit verringerter Formaldehydemission, hoher Feuchtebeständigkeit und Hydrolyseresistenz der Verleimung |
DE102008023007A1 (de) | 2007-11-11 | 2010-06-02 | Roffael, Edmone, Prof. Dr.-Ing. | Verfahren zur Herstellung von Holzfaserplatten mit verringerter Formaldehydemission, hoher Feuchtebeständigkeit und Hydrolyseresistenz der Verleimung |
CN102268832A (zh) * | 2011-07-15 | 2011-12-07 | 芬欧汇川(常熟)纸业有限公司 | 使用落叶松化机浆生产中高档文化用纸的制浆造纸工艺 |
CN102268832B (zh) * | 2011-07-15 | 2013-09-25 | 芬欧汇川(中国)有限公司 | 使用落叶松化机浆生产中高档文化用纸的制浆造纸工艺 |
EP3178622A1 (de) | 2015-12-07 | 2017-06-14 | SWISS KRONO Tec AG | Holzwerkstoffplatte mit reduzierter emission an flüchtigen organischen verbindungen (vocs) und verfahren zu deren herstellung |
WO2017097506A1 (de) | 2015-12-07 | 2017-06-15 | SWISS KRONO Tec AG | Holzwerkstoffplatte mit reduzierter emission an flüchtigen organischen verbindungen (vocs) und verfahren zu deren herstellung |
US10399245B2 (en) | 2015-12-07 | 2019-09-03 | SWISS KRONO Tec AG | Wood material board with reduced emission of volatile organic compounds (VOCs) and method for the production thereof |
US11148317B2 (en) | 2015-12-07 | 2021-10-19 | SWISS KRONO Tec AG | Wood material board with reduced emission of volatile organic compounds (VOCs) and method for the production thereof |
Also Published As
Publication number | Publication date |
---|---|
ES2094601T3 (es) | 1997-01-16 |
EP0639434A1 (de) | 1995-02-22 |
ES2094601T5 (es) | 2004-09-01 |
EP0639434B1 (de) | 1996-09-18 |
DK0639434T3 (da) | 1996-10-21 |
DK0639434T4 (da) | 2004-02-09 |
DE59400679D1 (de) | 1996-10-24 |
DE4327774A1 (de) | 1995-02-23 |
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