EP0065941A2 - Zurichtverfahren für Spanplatten - Google Patents

Zurichtverfahren für Spanplatten Download PDF

Info

Publication number
EP0065941A2
EP0065941A2 EP82850116A EP82850116A EP0065941A2 EP 0065941 A2 EP0065941 A2 EP 0065941A2 EP 82850116 A EP82850116 A EP 82850116A EP 82850116 A EP82850116 A EP 82850116A EP 0065941 A2 EP0065941 A2 EP 0065941A2
Authority
EP
European Patent Office
Prior art keywords
board
surface layer
layer
fractionated
layers
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.)
Withdrawn
Application number
EP82850116A
Other languages
English (en)
French (fr)
Other versions
EP0065941A3 (de
Inventor
Lars-Olof Johansson
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.)
Swedspan AB
Original Assignee
Swedspan AB
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 Swedspan AB filed Critical Swedspan AB
Publication of EP0065941A2 publication Critical patent/EP0065941A2/de
Publication of EP0065941A3 publication Critical patent/EP0065941A3/de
Withdrawn legal-status Critical Current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
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/14—Distributing or orienting the particles or fibres

Definitions

  • the present invention relates to a method for the preparation of a particle board by building up the board in layers with a middle layer of coarse material, a surface layer of fine material on each side of the board and, optionally, one or more intermediate layers between the middle layer and each surface layer.
  • An object of the present invention is to provide a method of the above mentioned type, by means of which method a surface of throughout fine material can be obtained.
  • Another object of the invention is to provide a method of the above mentioned type, by means of which method the consumption of binder for the surface layer can be cut down and the loss of binder by material ground away can be reduced.
  • the method according to the invention provides a board with considerably higher volumetric weight and bending strength at the same percentage addition of binder and a considerably lower percentage addition of binder can be used for the attainment of the same bending strength.
  • the fractionation of the material for the surface layer in the method according to the invention is preferably carried out by methods known per se in connection with the stepless fractionation of particle material but the application of the fractionated material is carried out in reverse order in comparison with the conventional methods for the application of fractionated material, i.e. according to the invention the direction of the blowing in wind sifters is changed to be the reversed respectively the direction of rotation is changed in case of throwing rolls to be the reversed in comparison with the conventional methods.
  • a fractionation step-by-step of the material for the surface layer into two or more fractions can be used, if desired.
  • Glue-coated particles for the middle and surface layers of a three-layer board were taken from the production in the factory and were pressed to boards having a thickness of 15mm in a laboratory press at 200 0 C with a pressing time of 7 seconds/mm.
  • the material of the surface layer amounted to about 35 % by weight calculated on the weight of the total particle material.
  • the material for the surface layer was fractionated according to the invention into 2 fractions, one being in the range of 0 - 5 mm and the other above 5 mm.
  • the two fractions were strewed with the finer fraction next to the material of the middle layer and on both sides thereof and with the coarser fraction farthest.out on the two-sides of the boards.
  • Two different percentages of glue (11.5 and 7.8 % by weight calculated on the weight of the surface layer) were used, three boards being pressed at each percentage of glue.

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)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP82850116A 1981-05-22 1982-05-19 Zurichtverfahren für Spanplatten Withdrawn EP0065941A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8103255A SE426371C (sv) 1981-05-22 1981-05-22 Sett vid framstellning av en spanskiva
SE8103255 1981-05-22

Publications (2)

Publication Number Publication Date
EP0065941A2 true EP0065941A2 (de) 1982-12-01
EP0065941A3 EP0065941A3 (de) 1984-08-15

Family

ID=20343911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82850116A Withdrawn EP0065941A3 (de) 1981-05-22 1982-05-19 Zurichtverfahren für Spanplatten

Country Status (2)

Country Link
EP (1) EP0065941A3 (de)
SE (1) SE426371C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU580720B2 (en) * 1986-08-30 1989-01-27 Hornitex Werke Gebr.Kunnemeyer G.M.B.H. & Co. Kg Method of preparing wood-fibre boards
US6284794B1 (en) 1996-11-05 2001-09-04 Head Explorer Aps Method for treating tension-type headache with inhibitors of nitric oxide and nitric oxide synthase
WO2005046950A1 (en) * 2003-11-13 2005-05-26 Swedwood International Ab Particle board

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR926024A (fr) * 1946-04-25 1947-09-19 Procédé pour la fabrication de plaques pressées formées de plusieurs couches de particules de bois et de liant et plaque pressée obtenue au moyen de ce procédé
FR1318585A (fr) * 1962-03-30 1963-02-15 August Moralt éléments de forme à base de poudre de bois
DE1528232A1 (de) * 1965-10-01 1970-07-02 Aicher Geb Spanplatte und Verfahren zu ihrer Herstellung
FR1486810A (fr) * 1966-07-15 1967-06-30 Schenck Gmbh Carl Procédé et installation pour la fabrication d'agglomérés, notamment de panneaux ou de plaques, à partir d'une nappe de matière dispersable formée de plusieurs chouches
DE1806210A1 (de) * 1968-10-31 1970-07-02 Emsland Spanplatten Kg Hans St Verfahren und Anlage fuer die Aufbereitung von Holzwerkstoff fuer die Herstellung von Spanplatten mit zumindest einseitiger Feinstoffdeckschicht

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU580720B2 (en) * 1986-08-30 1989-01-27 Hornitex Werke Gebr.Kunnemeyer G.M.B.H. & Co. Kg Method of preparing wood-fibre boards
US4883546A (en) * 1986-08-30 1989-11-28 Otto Kunnemeyer Process for the manufacture of wood fiber boards
US6284794B1 (en) 1996-11-05 2001-09-04 Head Explorer Aps Method for treating tension-type headache with inhibitors of nitric oxide and nitric oxide synthase
WO2005046950A1 (en) * 2003-11-13 2005-05-26 Swedwood International Ab Particle board
RU2355569C2 (ru) * 2003-11-13 2009-05-20 Суэдвуд Интернэшнл Аб Древесностружечная плита
US8398905B2 (en) 2003-11-13 2013-03-19 Swedwood International Ab Particle board
NO339429B1 (no) * 2003-11-13 2016-12-12 Ikea Supply Ag Sponplate samt fremgangsmåte ved fremstilling av denne

Also Published As

Publication number Publication date
SE8103255L (sv) 1982-11-23
SE426371B (sv) 1983-01-17
EP0065941A3 (de) 1984-08-15
SE426371C (sv) 1984-11-19

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Legal Events

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

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AK Designated contracting states

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PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19850416

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JOHANSSON, LARS-OLOF