EP1159114A1 - Procede de realisation de produits sous forme de panneaux - Google Patents

Procede de realisation de produits sous forme de panneaux

Info

Publication number
EP1159114A1
EP1159114A1 EP00920452A EP00920452A EP1159114A1 EP 1159114 A1 EP1159114 A1 EP 1159114A1 EP 00920452 A EP00920452 A EP 00920452A EP 00920452 A EP00920452 A EP 00920452A EP 1159114 A1 EP1159114 A1 EP 1159114A1
Authority
EP
European Patent Office
Prior art keywords
layer material
top layer
isocyanate
fraction
glued
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
Application number
EP00920452A
Other languages
German (de)
English (en)
Other versions
EP1159114B1 (fr
Inventor
Kay-Henrik Von Der Heide
Gernot Von Haas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dieffenbacher Schenck Panel GmbH
Original Assignee
Dieffenbacher Schenck Panel GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dieffenbacher Schenck Panel GmbH filed Critical Dieffenbacher Schenck Panel GmbH
Publication of EP1159114A1 publication Critical patent/EP1159114A1/fr
Application granted granted Critical
Publication of EP1159114B1 publication Critical patent/EP1159114B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/14—Distributing or orienting the particles or fibres

Definitions

  • isocyanate As a binder for board products and the resulting advantages and disadvantages are described in the special print "Isocyanate as a binder for particle board" by Dr. G. Loew, Ing. H.I. Sachs, Bayer AG from 1977 on page 479. This shows that polyisocyanates adhere to metals under pressure and heat.
  • the solution to this problem is the
  • a process for the production of multilayer sheet materials of an isocyanate-mixed mass from wood chips, wood fibers or from woody raw materials is known from AT-PS 270,189. Furthermore, it is known from this publication to use a mixture of isocyanate and urea, melamine and phenol formaldehyde resin glue as the binder or, for example, to bind the chips in the top layer with melamine resin and the chips in the middle layer with pure isocyanate solution or vice versa. The use of a mixture of the abovementioned binders results in a greatly increased moisture resistance and a considerable reduction in swelling when the plate products are exposed to moisture.
  • US Pat. No. 5,779,955 discloses a method for producing plate materials, in which par- of vegetable products with isocyanate as a binder and water.
  • the base is covered with a liquid release agent before the mixture is spread. After the spreading process, a release agent is also applied to the top of the deposited mixture. The molded body is then hot-pressed.
  • the division of the cover layer material into a fine fraction and a coarse fraction as described in the method according to the invention makes it possible to glue the additives to amino and / or phenolic plastics by pretreating the fine fraction with additives. Due to the higher degree of grinding of the fine fraction, the wettability of the particles from lingocellulose-containing annual plants with amino and / or phenolic plastics is promoted as a binder. The addition of wetting agent also improves the wetting properties. A further addition of an adhesion promoter during premixing brings about a significant improvement in the adhesive properties of the particles. Since the outer cover layers are glued with amino and / or phenol plastics, the problem of adhering isocyanate-glued chips to the plate surface during pressing is avoided. In the process according to the invention, no additional release agents or release layers are required, so that additional costs are avoided.
  • the cold tack present in the outer cover layers brings about a surface stability of the outer layers of the scattered molding, so that the multilayer molding can be transported to the press run-in via the individual transfer area in the molding strand without damaging the previously achieved cover layer quality.
  • Fig. 1 the method for producing a five-layer chipboard is shown schematically.
  • the raw material is first processed.
  • Annual lignocellulosic plants are used as raw material used.
  • Annual lignocellulosic plants include, for example, cereal straw, rice straw, hemp, flax, soybean straw.
  • straw is used as the raw material.
  • the addition of free acids or bases is adjusted depending on the binder to be used.
  • the top layer fine fraction 5a thus prepared is then fed to a first gluing station 12.
  • the wetting agents and / or adhesion promoters are added directly before the first gluing station 12.
  • the pretreated top layer fine fraction 5a is glued with aminoplasts as a binder. Instead of aminoplasts, phenolic plastics or mixtures thereof could also be used become.
  • cover layer material is not divided into two fractions, but that the entire cover layer material is processed depending on the degree of grinding so that gluing and pretreatment are possible for material 5a in accordance with the procedure described above.
  • the middle layer material 6 obtained in the processing of straw straw is fed to a third gluing station 14.
  • the middle layer material 6 is glued with isocyanate as a binder.
  • water or other additives can be added in addition to the binder.
  • isocyanate in emulsified form to the gluing station.
  • a mixture of isocyanate and phenolic and / or aminoplast could also be used as the binder.
  • a premix with additives may then also be required.

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)

Abstract

L'invention concerne un procédé de réalisation de produits sous forme de panneaux par compression à chaud d'une ébauche multicouche formée, constituée de copeaux de plantes annuelles contenant de la lignocellulose, à laquelle est ajouté un liant. L'objectif de l'invention est de résoudre le problème résultant de l'adhérence lors de l'utilisation d'isocyanate comme liant. Cet objectif est atteint par le fait que la matière de revêtement de couverture est divisée en une fraction fine (5a) et en une fraction grossière (5b). La fraction fine (5a) de matière de couche de couverture est prémélangée avec un adhésif et/ou un agent de mouillage et/ou des acides et/ou des bases, puis encollée avec des aminoplastes et/ou des phénoplastes. La fraction grossière (5b) de matière de couche de couverture est encollée avec de l'isocyanate ou avec des mélanges constitués d'isocyanate et d'aminoplastes et/ou de phénoplastes, et une ébauche formée à cinq couches est constituée par dispersion. Ainsi les couches de couverture situées le plus vers l'extérieur sont constituées de la fraction fine de matière de couche de couverture encollée avec des aminoplastes et/ou des phénoplastes.
EP00920452A 1999-03-05 2000-02-28 Procede de realisation de produits sous forme de panneaux Expired - Lifetime EP1159114B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19909607A DE19909607A1 (de) 1999-03-05 1999-03-05 Verfahren zur Herstellung von plattenförmigen Produkten
DE19909607 1999-03-05
PCT/EP2000/001661 WO2000053379A1 (fr) 1999-03-05 2000-02-28 Procede de realisation de produits sous forme de panneaux

Publications (2)

Publication Number Publication Date
EP1159114A1 true EP1159114A1 (fr) 2001-12-05
EP1159114B1 EP1159114B1 (fr) 2003-10-22

Family

ID=7899756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00920452A Expired - Lifetime EP1159114B1 (fr) 1999-03-05 2000-02-28 Procede de realisation de produits sous forme de panneaux

Country Status (5)

Country Link
US (1) US6767421B1 (fr)
EP (1) EP1159114B1 (fr)
CA (1) CA2362718C (fr)
DE (2) DE19909607A1 (fr)
WO (1) WO2000053379A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE533803C2 (sv) * 2008-10-16 2011-01-18 Swedwood Internat Ab Spånskiva med mittskikt av defibrerande träspån
BR112013005559A2 (pt) * 2010-09-10 2016-05-03 Basf Se moldagem, processo para a produção de uma moldagem, e, uso de uma moldagem
DE102015120653B4 (de) * 2015-11-27 2023-05-04 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Anlage zur Herstellung einer mehrschichtigen Werkstoffplatte und mehrschichtige Werkstoffplatte
DE102016110070A1 (de) * 2016-05-31 2017-11-30 Dieffenbacher GmbH Maschinen- und Anlagenbau Anlage und Verfahren zur Herstellung einer Werkstoffplatte
AU2016208261A1 (en) * 2016-07-25 2018-02-08 Ampan Naturally Pty Ltd Panel and method of producing a panel
US20180071947A1 (en) * 2016-09-14 2018-03-15 Hexion Inc. Method for bonding lignocellulosic material with phenolic resin and gaseous carbon dioxide
DE102017111134B4 (de) * 2017-05-22 2018-12-27 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Anlage zur Herstellung einer Spanplatte
DE102017120043B3 (de) * 2017-08-31 2018-12-20 Siempelkamp Maschinen- Und Anlagenbau Gmbh Anlage und Verfahren zur Herstellung von beleimten Pflanzenpartikeln

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
DE209289C (fr)
AT270189B (de) 1966-03-17 1969-04-25 Novopan Gmbh Verfahren zur Herstellung von Platten oder Formkörpern durch Verpressen, vorzugsweise Heißpressen einer mit Bindemittel versetzten Masse aus Holzspänen, Holzfasern oder aus verholzten Rohstoffen
US3779843A (en) * 1971-01-21 1973-12-18 H Knapp Continuous process for producing consolidated lignocellulosic material
US4045595A (en) * 1974-06-13 1977-08-30 The Borden Chemical Company (Canada) Limited Coating wood surface by vinyl-modified lignocellulosic particles
US4038531A (en) * 1976-05-18 1977-07-26 Weyerhaeuser Company Process control apparatus for controlling a particleboard manufacturing system
DE2716971C2 (de) * 1977-04-16 1982-06-16 Rütgerswerke AG, 6000 Frankfurt Bindemittel für kochwasser- und witterungsbeständige Platten aus lignozellulosehaltigem Material
DE7717108U1 (de) * 1977-05-31 1978-01-05 Deutsche Novopan Gmbh, 3400 Goettingen Heisswasserbestaendige, formaldehydfreie spanplatte
DE2832509C2 (de) * 1978-07-25 1986-02-20 Deutsche Novopan KG, 3400 Göttingen Verfahren zur Herstellung von Spanplatten
US4393019A (en) * 1981-11-30 1983-07-12 The United States Of America As Represented By The Secretary Of Agriculture Method of pressing reconstituted lignocellulosic materials
DE3730776A1 (de) * 1987-09-12 1989-03-23 Basf Ag Verbesserte mehrschichtige spannplatten und ihre herstellung
DE3820376A1 (de) 1988-06-15 1989-12-21 Novopan Gmbh Verfahren zur herstellung von mehrschichtigen spanplatten
DE59106627D1 (de) 1991-04-30 1995-11-09 Schenck Ag Carl Vorrichtung zum kontinuierlichen Aufbringen einer Streugutschicht.
DE9209289U1 (fr) * 1992-07-10 1992-08-20 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De
US5554330A (en) * 1995-01-31 1996-09-10 Isoboard Enterprises Inc. Process for the manufacturing of shaped articles
DE19603330C1 (de) 1996-01-31 1997-06-05 Bayer Ag Verfahren zur Herstellung von Holzwerkstoffen mit Polyisocyanat-Bindemitteln unter Mitverwendung von latenten, wärmeaktivierbaren Katalysatoren
US5779955A (en) 1997-02-24 1998-07-14 G. Siempelkamp Gmbh & Co. Method of making shaped bodies especially boards
DK176116B1 (da) * 1997-03-18 2006-08-14 Wesser & Dueholm Fremgangsmåde til fremstilling af spånplader, fiberplader og lignende
DE10049050A1 (de) * 2000-10-04 2002-04-25 Dieffenbacher Gmbh Maschf Verfahren zur Herstellung einer Mehrschichtplatte und eine nach diesem Verfahren hergestellte Mehrschichtplatte
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Non-Patent Citations (1)

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Title
See references of WO0053379A1 *

Also Published As

Publication number Publication date
EP1159114B1 (fr) 2003-10-22
CA2362718A1 (fr) 2000-09-14
US6767421B1 (en) 2004-07-27
CA2362718C (fr) 2007-01-02
DE50004152D1 (de) 2003-11-27
WO2000053379A1 (fr) 2000-09-14
DE19909607A1 (de) 2000-09-07

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