EP0573039A1 - Nattes en fibres cellulosiques et ligno-cellulosiques contenant un agent liant - Google Patents

Nattes en fibres cellulosiques et ligno-cellulosiques contenant un agent liant Download PDF

Info

Publication number
EP0573039A1
EP0573039A1 EP93108937A EP93108937A EP0573039A1 EP 0573039 A1 EP0573039 A1 EP 0573039A1 EP 93108937 A EP93108937 A EP 93108937A EP 93108937 A EP93108937 A EP 93108937A EP 0573039 A1 EP0573039 A1 EP 0573039A1
Authority
EP
European Patent Office
Prior art keywords
mat
outer layers
fiber
layers
cellulosic
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
EP93108937A
Other languages
German (de)
English (en)
Other versions
EP0573039B1 (fr
Inventor
Albert Dr. Nicolay
Klaus Melzer
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.)
Lignotock GmbH
Original Assignee
Lignotock 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 Lignotock GmbH filed Critical Lignotock GmbH
Publication of EP0573039A1 publication Critical patent/EP0573039A1/fr
Application granted granted Critical
Publication of EP0573039B1 publication Critical patent/EP0573039B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B27N3/14—Distributing or orienting the particles or fibres
    • B27N3/143—Orienting the particles or fibres

Definitions

  • Binder-containing fiber mats made of cellulose or lignocellulose fibers (wood fibers), which are processed into molded parts by hot pressing, are known in a wide variety of compositions and are pressed into self-supporting molded parts in various ways.
  • the shaping possibilities of such fiber mats during hot pressing are limited above all by their inadequate tensile strength.
  • the low fiber cohesion of the only moderately compacted mats very soon leads to fiber separations during the forming process, so that locally faulty molded parts as rejects cannot always be avoided.
  • Binder concentrations in the surface influence the physical characteristics of the finished molded part, but have no influence on the deformability of the fiber mats.
  • Deformation aids in the form of power transmission cloths between the tool and the fiber mat stabilizing cloths
  • fabrics in the middle of the mat only leads to incomplete solutions to the problem.
  • the present problem can be characterized as follows: If complicated molded parts are required, steaming of the wood fiber mats, multi-stage deformation and the use of stabilizing cloths are still necessary in production practice - all in all, an effort that makes production more difficult and more expensive.
  • the invention is therefore based on the object to provide wood fiber mats of the type described, the shaping behavior of which is improved without additional material expenditure.
  • Another advantage of mats according to the invention is that with an additional compression of more than 40% of the outer layers, which contain at least 20% by weight of fiber material of the mat, the total thickness of the mat is reduced.
  • Fiber mats of the type described are not only shaped in the manufacture of molded parts, but also compressed. Here occur at places where the molding surfaces of the tools are oriented approximately parallel to the pressing direction are shear forces in the fiber mat, which lead to tears and defects in the molded part.
  • the reduction in thickness of wood fiber mats according to the invention also creates better deformation conditions. In the central region of the mat, the fiber displaceability necessary for the deformability of the fiber mat is retained due to the lower mat compression given here.
  • the higher tensile strength of the higher density outer layers and the resulting improved deformability of the wood fiber mats, the still good mobility of the fibers in the larger part of the mat and the improved deformation conditions due to the improved geometric conditions due to the reduced mat thickness work together in such a way that at Forming the mat blanks into shaped parts, the damping of the fiber mat blanks and additional traction-transmitting aids - such as fabric coverings - can be dispensed with in the majority of cases.
  • Wood fiber mats of the type described are in principle produced by spreading the glued wood fibers onto a running belt.
  • the fibers are given a preferred direction of orientation in the running direction of the belt.
  • the tensile strength of the outer layers with the higher compression is anisotropic: across the direction of formation of the mats, it is significantly lower than in the direction of formation. This is disadvantageous for the shaping of the mats into the molded part, since the tensile forces can act in any surface direction of the mat and have to be transmitted.
  • the higher density outer layer consists of a large number of individual layers, the fiber arrangements of which are approximately orthotropic to one another are oriented, that is to say they intersect approximately at an angle of 90 °, this disadvantage is avoided and the deformation properties of the fiber mat are independent of deformation directions, that is to say of the (later) molded part geometry.
  • the large number of individual layers from which the higher-density outer layers are formed with orthotropically-oriented fibers facilitates complete orientation of the fibers in the entire volume of the outer layers in the production of the mats, since only thin individual layers have to be "completely oriented".
  • a fiber orientation in which the orthotropic orientation of the fibers changes alternately in the individual layers can therefore be advantageous for mat production.
  • Wood fiber mats are often used to a small extent other fiber materials, e.g. Polymer fibers, mixed.
  • the term "longer fiber” refers to the length of the shorter wood fibers, which does not exceed 10 mm.
  • mats the outer layers of which have a specific weight of more than 0.5 g / cm 3, while the specific weight of the middle layer is between 0.3 and 0.4 g / cm 3, have an optimal range of properties with regard to manufacture and handling the mats as well as the molding production. Also the handling of the mats Their storage, for cutting and transport is facilitated by higher density outer layers due to the increased plate rigidity.
  • Fig. 2 different scattering devices 6 are indicated for the formation of the outer layers, the thickened middle layer is spread by a further spreading head 7.
  • the circulating belts 5, onto which the preferably identical and pre-glued fiber material is scattered, run in the direction of the arrow and effect the mat transport.
  • Two pairs of calender rolls 3 are preheated and cause both the compression of the two outer layers 2 and, if necessary, their stabilizing stabilization by softening at least one component of the binder without crosslinking.
  • a degree of compaction of the middle layer 1 can be set here.
  • the compression of the outer layers 2, which have already been pre-compressed to a higher degree, is no longer influenced. however, sufficiently firmly connected to the middle layer 1 by the pressure of the calender rolls 4.
  • a fiber orientation in the pre-compressed outer layers 2 of the fiber mat 1, 2 can be achieved, for example, in that the calender rolls 3 have surface patterns, for example in the form of oblique grooves.
  • FIG. 2 shows, for example, how three-layer mats 8 according to the invention can be produced. Other procedures, even a larger number of layers are possible; e.g. outer layers 2 identical to the material can also be prefabricated separately and connected to the middle layer 1 in another way.

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)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
EP93108937A 1992-06-04 1993-06-03 Nattes en fibres cellulosiques et ligno-cellulosiques contenant un agent liant Expired - Lifetime EP0573039B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4218444 1992-06-04
DE4218444A DE4218444A1 (de) 1992-06-04 1992-06-04 Bindemittelhaltige Fasermatten aus Zellulose- bzw. Lignozellulosefasern

Publications (2)

Publication Number Publication Date
EP0573039A1 true EP0573039A1 (fr) 1993-12-08
EP0573039B1 EP0573039B1 (fr) 1995-08-30

Family

ID=6460394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93108937A Expired - Lifetime EP0573039B1 (fr) 1992-06-04 1993-06-03 Nattes en fibres cellulosiques et ligno-cellulosiques contenant un agent liant

Country Status (5)

Country Link
EP (1) EP0573039B1 (fr)
JP (1) JPH06235153A (fr)
CA (1) CA2097663A1 (fr)
DE (2) DE4218444A1 (fr)
ES (1) ES2078087T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606262C1 (de) * 1996-02-21 1997-04-17 Glunz Ag Verfahren und Vorrichtung zur Herstellung einer mitteldichten Faserplatte
WO2007031166A1 (fr) 2005-08-16 2007-03-22 Andreas Michanickl Plaque légère multicouche en matériau dérivé du bois
EP1792699A1 (fr) * 2005-12-02 2007-06-06 GÜNTHER ISENSEE Modellbaubedarf Procédé pour la fabrication de panneaux de particules à noyaux de balsa
EP2695711A1 (fr) * 2012-08-09 2014-02-12 Dascanova GmbH Procédé et appareil pour la production d'un élément à base de particules avec précompression d'une partie des particules

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4342789C2 (de) * 1993-12-15 1996-03-07 Lignotock Gmbh Verfahren zum Herstellen von Formteilen
DE4434876B4 (de) * 1994-09-29 2004-09-16 Dieffenbacher Gmbh + Co. Kg Verfahren und Anlage zur kontinuierlichen Herstellung einer Mehrschichtplatte
DE4438764A1 (de) * 1994-10-29 1996-05-02 Hp Chemie Pelzer Res & Dev Verbundwerkstoff für die Automobilindustrie
DE19535559C1 (de) * 1995-09-12 1997-05-15 Lignotock Gmbh Flexible, in der Wärme verpreßbare Holzwerkstoffmatte
US6197414B1 (en) 1997-12-25 2001-03-06 Matsushita Electric Works, Ltd. Fiberboard and manufacturing method thereof
DE10320686B4 (de) * 2003-04-30 2015-02-05 Faurecia Innenraum Systeme Gmbh Verfahren zur Herstellung von Formkörpergrundmaterial
DE102004062649C5 (de) 2004-12-21 2013-06-06 Kronotec Ag Verfahren zur Herstellung einer Holzfaserdämmstoffplatte bzw.-matte und nach diesem Verfahren hergestellte Holzfaserdämmstoffplatten bzw.-matten
DE102009056581A1 (de) 2008-11-25 2010-06-10 Technische Universität Dresden Lignocellulose Fasern enthaltendes lagerfähiges Halbzeug und Verfahren zu dessen Herstellung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100927B (de) * 1958-03-04 1961-03-02 Ind Companie Kleinewefers Kons Verfahren und Vorrichtung zum Ausrichten der Spaene eines Span-bettes zur Erzeugung von Spanplatten
GB932927A (en) * 1959-09-09 1963-07-31 Abitibi Power & Paper Co Oriented wood particle board and apparatus for producing same
FR2281214A1 (fr) * 1974-08-05 1976-03-05 Azote & Prod Chim Procede de fabrication en continu de panneaux de particules
DE3233385A1 (de) * 1981-10-02 1983-04-28 Günter Hans 1000 Berlin Kiss Mehrschicht-fasermatte und verfahren zu deren herstellung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7535229U (de) * 1975-11-06 1976-03-18 G. Siempelkamp & Co, 4150 Krefeld Spanplatte, faserplatte oder dergleichen
US4283450A (en) * 1976-11-05 1981-08-11 Masonite Corporation Product containing high density skins
JPS5876561A (ja) * 1981-10-02 1983-05-09 ギユンタ−・ハ−・キス 多層繊維マツト及びその製造方法
SE458839B (sv) * 1988-03-16 1989-05-16 Inst Traeteknisk Forskning Foerfarande vid framstaellning av spaanskivor jaemte spaanskiva framstaelld enligt foerfarandet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100927B (de) * 1958-03-04 1961-03-02 Ind Companie Kleinewefers Kons Verfahren und Vorrichtung zum Ausrichten der Spaene eines Span-bettes zur Erzeugung von Spanplatten
GB932927A (en) * 1959-09-09 1963-07-31 Abitibi Power & Paper Co Oriented wood particle board and apparatus for producing same
FR2281214A1 (fr) * 1974-08-05 1976-03-05 Azote & Prod Chim Procede de fabrication en continu de panneaux de particules
DE3233385A1 (de) * 1981-10-02 1983-04-28 Günter Hans 1000 Berlin Kiss Mehrschicht-fasermatte und verfahren zu deren herstellung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606262C1 (de) * 1996-02-21 1997-04-17 Glunz Ag Verfahren und Vorrichtung zur Herstellung einer mitteldichten Faserplatte
WO2007031166A1 (fr) 2005-08-16 2007-03-22 Andreas Michanickl Plaque légère multicouche en matériau dérivé du bois
EP1915253A1 (fr) 2005-08-16 2008-04-30 Andreas Michanickl Plaque légère multicouche en matériau dérivé du bois
EP2574455A1 (fr) * 2005-08-16 2013-04-03 Andreas Michanickl Panneau en bois multicouche léger
EP1792699A1 (fr) * 2005-12-02 2007-06-06 GÜNTHER ISENSEE Modellbaubedarf Procédé pour la fabrication de panneaux de particules à noyaux de balsa
EP2695711A1 (fr) * 2012-08-09 2014-02-12 Dascanova GmbH Procédé et appareil pour la production d'un élément à base de particules avec précompression d'une partie des particules

Also Published As

Publication number Publication date
EP0573039B1 (fr) 1995-08-30
DE4218444A1 (de) 1993-12-09
DE59300524D1 (de) 1995-10-05
ES2078087T3 (es) 1995-12-01
CA2097663A1 (fr) 1993-12-05
JPH06235153A (ja) 1994-08-23

Similar Documents

Publication Publication Date Title
DE69233415T2 (de) Verfahren und vorrichtung zum herstellen von rosten aus fasern
EP0573039B1 (fr) Nattes en fibres cellulosiques et ligno-cellulosiques contenant un agent liant
EP0106249A1 (fr) Ressort à lames en matériau plastique ainsi que procédé pour sa fabrication
DE1299115B (de) Stranggepresste Holzspanplatte
EP0894617A2 (fr) Article multicouche moulé et procédé de fabrication
EP0249592A2 (fr) Panneau comprimé multicouche en matières synthétiques et élément de construction fabriqué à partir de ce panneau ayant une partie courbée
EP1721715B1 (fr) Plaque composite en bois, procédé et appareil pour la fabrication de la plaque
EP0346864B1 (fr) Méthode de fabrication des panneaux de fibres de bois multicouches
DE3343330C2 (fr)
EP1469140B1 (fr) procédé pour la fabrication d'un panneau avec un support en bois reconstitué
DE69917048T2 (de) Verbundwerkstoffkonstruktion
EP0927790A2 (fr) Procédé pour la fabrication de plaques stratifiées, plaques pour crayons et/ou tiges pour instruments à écrire, dessiner ou peindre
DE60304032T2 (de) Möbelspanplatte
DE10049050A1 (de) Verfahren zur Herstellung einer Mehrschichtplatte und eine nach diesem Verfahren hergestellte Mehrschichtplatte
DE102019121471A1 (de) Werkstoffplatte und Verfahren zur Herstellung einer Werkstofplatte
EP3421200B1 (fr) Plaque de matière dérivée du bois avec des sphères creuses
DE102018115121A1 (de) Herstellungsverfahren für Harzverbundplatten
DE4212732A1 (de) Verfahren zur Herstellung eines Formteils mit verstärkenden Einlagen sowie Halbzeug für ein derartiges Formteil
DE19535559C1 (de) Flexible, in der Wärme verpreßbare Holzwerkstoffmatte
EP1792698A2 (fr) Panneau renforcé
EP2078599B1 (fr) Plaque de serrage
DE3721663C3 (de) Verfahren zum Heißpressen von Formkörpern
DE3721664A1 (de) Fasermatte fuer das warme verpressen zu formteilen
EP0548758A1 (fr) Panneau et procédé pour sa fabrication
EP2786849B1 (fr) Procédé de fabrication d'un panneau de fibres multicouche, et panneau de fibres multicouche

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19931124

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

17Q First examination report despatched

Effective date: 19941111

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950829

REF Corresponds to:

Ref document number: 59300524

Country of ref document: DE

Date of ref document: 19951005

ITF It: translation for a ep patent filed

Owner name: DR. ING. A. RACHELI & C.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2078087

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050627

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050704

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060603

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060630

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060821

Year of fee payment: 14

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060603

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070603

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20100616

Year of fee payment: 18

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20120717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110604