SE469326B - PROCEDURE FOR MANUFACTURING FIBERBOARD - Google Patents

PROCEDURE FOR MANUFACTURING FIBERBOARD

Info

Publication number
SE469326B
SE469326B SE9103249A SE9103249A SE469326B SE 469326 B SE469326 B SE 469326B SE 9103249 A SE9103249 A SE 9103249A SE 9103249 A SE9103249 A SE 9103249A SE 469326 B SE469326 B SE 469326B
Authority
SE
Sweden
Prior art keywords
fibrous material
glue
hardened glue
inner layer
fibrous
Prior art date
Application number
SE9103249A
Other languages
Swedish (sv)
Other versions
SE9103249L (en
SE9103249D0 (en
Inventor
C Saefstroem
Original Assignee
Sunds Defibrator Ind 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 Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Priority to SE9103249A priority Critical patent/SE469326B/en
Publication of SE9103249D0 publication Critical patent/SE9103249D0/en
Priority to DE19924236266 priority patent/DE4236266A1/en
Publication of SE9103249L publication Critical patent/SE9103249L/en
Publication of SE469326B publication Critical patent/SE469326B/en

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

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)

Description

469 526 LO L5 25 30 35 2 satsen utgör 5-20 vikts-%. Detta sker lämpligen i blásledningen efter defibratorn. Därefter överföres materialet till en tork, lämpligen en rörtork 1 där fibermaterialet transporteras till- sammans med het gas (luft) under limmets härdningstemperatur. 469 526 LO L5 25 30 35 2 the batch is 5-20% by weight. This is conveniently done in the blow line after the defibrator. The material is then transferred to a dryer, preferably a tube dryer 1 where the fibrous material is transported together with hot gas (air) below the curing temperature of the adhesive.

Alternativt kan limmet tillsättas i en limblandare efter torken.Alternatively, the adhesive can be added to an adhesive mixer after drying.

Efter torken avskiljes gasen i en cyklon 2 från fibermaterialet som införes i en första fiberbinge 3. Från denna första fiber- binge 3 förs fibermaterialet med hjälp av en första och en andra lufttransportledning 4,5 till en första respektive andra form- ningsenhet 6,7. Varje formningsenhet 6,7 avlägger ett fiberskikt på ett transportband 8. Därvid sugs transportluften av och får passera cykloner 9,10 där medföljande fibermaterial avskiljs och transporteras till en andra fiberbinge 11.After drying, the gas is separated in a cyclone 2 from the fibrous material which is introduced into a first fibrous binge 3. From this first fibrous binge 3 the fibrous material is conveyed by means of a first and a second air transport line 4,5 to a first and a second forming unit 6,7, respectively. . Each forming unit 6,7 deposits a fibrous layer on a conveyor belt 8. The conveyor air is sucked off and allowed to pass cyclones 9,10 where the accompanying fibrous material is separated and transported to a second fiber binge 11.

Från denna andra fiberbinge 11 förs fibermateríalet med hjälp av en tredje lufttransportledning 12 till en tredje form- ningsenhet 13 placerad mellan den första och den andra form- ningsenheten 6,7. Fiberskiktet som avläggs av den tredje form- ningsenheten 13 kommer därvid att hamna mellan skikten från den första respektive andra formningsenheten 6 respektive 7. Tran- sportluften som sugs av får passera en cyklon 14 varvid avskiljt fibermaterial àterföres till den andra fiberbingen ll.From this second fiber binge 11, the fibrous material is conveyed by means of a third air transport line 12 to a third forming unit 13 located between the first and the second forming unit 6,7. The fibrous layer deposited by the third forming unit 13 will then end up between the layers from the first and second forming units 6 and 7, respectively.

Tjockleken hos den på bandet 8 formade fibermattan regleras med fräsar 15,16,17 som avlägsnar överskottsmaterial från varje format skikt. Den så formade mattan komprimeras där- efter i en förpress 18 till önskad tjocklek. Därefter sker en uppdelning av fibermattan till önskade dimensioner med hjälp av sågar 19,20. Spillmaterialet föres till den andra fiberbingen 11 via en cyklon 21.The thickness of the fibrous mat formed on the belt 8 is controlled by cutters 15,16,17 which remove excess material from each formed layer. The mat thus formed is then compressed in a pre-press 18 to the desired thickness. Thereafter, the fiber mat is divided into desired dimensions by means of saws 19,20. The waste material is fed to the second fiber bin 11 via a cyclone 21.

De förpressade och uppdelade fibermattorna färdigpressas till skivor i en varmpress 22 under samtidig härdning av limmet.The pre-pressed and divided fiber mats are pre-pressed into sheets in a hot press 22 while simultaneously curing the adhesive.

De färdiga skivorna renkapas 23 i kanterna (kanttrim) samt slipas 24 till bestämda dimensioner. Restprodukterna från denna dimensionsjustering finfördelas och överförs antingen direkt eller via ett filter 25 till en första respektive andra dose- ringsbinge 26 respektive 27. I en fraktioneringsanordning 28 avskiljs alltför grovt material från den första doseringsbingen 26 och det accepterade materialet transporteras till en tredje fiberbinge 29. Slipresterna lufttransporteras från den andra ï/ 10 15 20 25 30 469 526 3 doseringsbingen 27 direkt till den tredje fiberbingen 29.The finished boards are cut 23 in the edges (edge trim) and ground 24 to certain dimensions. The residual products from this dimensional adjustment are atomized and transferred either directly or via a filter 25 to a first and second dosing bin 26 and 27, respectively. The abrasive residues are air transported from the second dosing bin 27 directly to the third fiber bin 29.

Från den tredje fiberbingen 29 doseras fibermaterialet, som innehåller härdat lim till en blandare 30 där nytt lim tillföres i en mängd av 5-20 vikts-%. Dessa två gånger belimmade fibrer blandas, lämpligen i en vindsikt 31, med en mindre mängd fibermaterial innehållande ohärdat lim, lämpligen fibermaterial som medelst fräsarna 15 och 17 avlägsnats från de skikt som formats i den första respektive andra formningsenheten 6 respek- tive 7. Det blandade fibermaterialet transporteras till den andra fiberbingen 11. Det fibermaterial som avlägsnats med fräsen 16 efter den tredje formningsenheten innehåller både härdat och ohärdat lim och återförs till den andra fiberbingen ll. Den andra fiberbingen ll kommer därmed att huvudsakligen innehålla restprodukter från format, komprimerat och varmpressat fibermaterial.From the third fiber bin 29 the fibrous material, which contains hardened glue, is dosed to a mixer 30 where new glue is added in an amount of 5-20% by weight. These twice glued fibers are mixed, suitably in a wind screen 31, with a small amount of fibrous material containing uncured glue, suitably fibrous material which has been removed by means of the cutters 15 and 17 from the layers formed in the first and second forming unit 6 and the fibrous material is transported to the second fiber bin 11. The fibrous material removed with the cutter 16 after the third forming unit contains both hardened and uncured adhesive and is returned to the second fiber bin 11. The second fiber bin 11 will thus mainly contain residual products from molded, compressed and hot-pressed fibrous material.

I stället för att blanda fibermaterial innehållande härdat lim med fibermaterial utan härdat lim i vindsikten 31 är det möjligt att direkt överföra de två gånger belimmade fibrerna från limblandaren 30 till den andra fiberbingen ll för blandning av fibrerna. En inblandning av en delström av fibermaterial innehållande ohärdat lim före fiberbingen ll är dock att föredra eftersom de härdade limpartiklarna därigenom kan fördelas jäm- nare i fibermattans inre skikt.Instead of mixing fibrous material containing cured glue with fibrous material without cured glue in the wind screen 31, it is possible to directly transfer the twice glued fibers from the glue mixer 30 to the second fiber bin 11 for mixing the fibers. However, an admixture of a partial stream of fibrous material containing uncured adhesive before the fiber bin 11 is preferable because the cured adhesive particles can thereby be distributed more evenly in the inner layer of the fibrous mat.

Uppfinningen innebär således att restprodukter från MDF- framställningen kan tillvaratas på bästa sätt. Således hålls fibermaterial innehållande härdat lim skilt från fibermaterial utan härdat lim så att enbart det förstnämnda fibermaterialet belimmas på nytt. Först därefter sker blandning och avläggning i fibermattans inre skikt.The invention thus means that residual products from the MDF production can be utilized in the best way. Thus, fibrous material containing cured adhesive is kept separate from fibrous material without cured adhesive so that only the first-mentioned fibrous material is re-glued. Only then does mixing and deposition take place in the inner layer of the fiber mat.

Uppfinningen är inte begränsad till ovanstående ut- föringsexempel utan kan varieras inom uppfinningstankens ram.The invention is not limited to the above exemplary embodiments but can be varied within the scope of the inventive concept.

Claims (4)

469 526 i 4 Patentkrav469,526 and 4 Patent Claims 1. Förfarande för framställning av fiberboard av typ MDF (Medium Density Fiberboard) av lignocellulosahaltigt material innefattande defibrering av materialet, belimning, torkning, formning, komprimering och varmpressning till färdiga skivor, k ä n n e t e c k n a t av att restprodukter från varmpressade skivor innehållande härdat lim finfördelas, blandas med nytt lim samt införes i ett inre skikt vid formningen av nya skivor.Process for the production of MDF (Medium Density Fiberboard) type fibers from lignocellulosic material comprising defibrating the material, gluing, drying, forming, compaction and hot pressing into finished boards, characterized in that residual products from hot-pressed boards containing hardened glue are atomized, mixed with new glue and inserted into an inner layer when forming new sheets. 2. Förfarande enligt kravet 1, k å n n e t e c k n a t av att de finfördelade restprodukterna som innehåller härdat lim efter den förnyade belimningen blandas med belimmat fibermate- rial utan härdat lim innan det införes i det inre skiktet.A method according to claim 1, characterized in that the atomized residual products containing hardened glue after the re-gluing are mixed with glued fiber material without hardened glue before it is introduced into the inner layer. 3. Förfarande enligt något av föregående krav, k ä n n e t e c k n a t av att fibermaterial innehållande härdat lim hålls skilt från fibermaterial utan härdat lim så att enbart materialet med härdat lim belimmas på nytt.3. A method according to any one of the preceding claims, characterized in that fibrous material containing hardened glue is kept separate from fibrous material without hardened glue so that only the material with hardened glue is re-glued. 4. Förfarande enligt något av föregående krav, k ä n n e t e c k n a t av att det inre skiktet formas av huvudsakligen restprodukter från varmpressat fibermaterial.A method according to any one of the preceding claims, characterized in that the inner layer is formed mainly of residual products from hot-pressed fibrous material.
SE9103249A 1991-11-05 1991-11-05 PROCEDURE FOR MANUFACTURING FIBERBOARD SE469326B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9103249A SE469326B (en) 1991-11-05 1991-11-05 PROCEDURE FOR MANUFACTURING FIBERBOARD
DE19924236266 DE4236266A1 (en) 1991-11-05 1992-10-27 Method to manufacture MDF panels - uses residual/waste products, which are mixed with adhesive and added to internal layer of panels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9103249A SE469326B (en) 1991-11-05 1991-11-05 PROCEDURE FOR MANUFACTURING FIBERBOARD

Publications (3)

Publication Number Publication Date
SE9103249D0 SE9103249D0 (en) 1991-11-05
SE9103249L SE9103249L (en) 1993-05-06
SE469326B true SE469326B (en) 1993-06-21

Family

ID=20384225

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9103249A SE469326B (en) 1991-11-05 1991-11-05 PROCEDURE FOR MANUFACTURING FIBERBOARD

Country Status (2)

Country Link
DE (1) DE4236266A1 (en)
SE (1) SE469326B (en)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7811489B2 (en) 2007-11-19 2010-10-12 Valinge Innovation Ab Recycling of laminate floorings
US8349234B2 (en) 2010-01-15 2013-01-08 Ceraloc Innovation Belgium Bvba Fibre based panels with a decorative wear resistance surface
US8419877B2 (en) 2008-04-07 2013-04-16 Ceraloc Innovation Belgium Bvba Wood fibre based panels with a thin surface layer
US8431054B2 (en) 2007-11-19 2013-04-30 Ceraloc Innovation Belgium Bvba Fibre based panels with a wear resistance surface
US8481111B2 (en) 2010-01-15 2013-07-09 Ceraloc Innovation Belgium Bvba Bright coloured surface layer
US8480841B2 (en) 2010-04-13 2013-07-09 Ceralog Innovation Belgium BVBA Powder overlay
US8728564B2 (en) 2011-04-12 2014-05-20 Valinge Innovation Ab Powder mix and a method for producing a building panel
US8784587B2 (en) 2010-01-15 2014-07-22 Valinge Innovation Ab Fibre based panels with a decorative wear resistance surface
US8920876B2 (en) 2012-03-19 2014-12-30 Valinge Innovation Ab Method for producing a building panel
US9085905B2 (en) 2011-04-12 2015-07-21 Valinge Innovation Ab Powder based balancing layer
US9181698B2 (en) 2013-01-11 2015-11-10 Valinge Innovation Ab Method of producing a building panel and a building panel
US9352499B2 (en) 2011-04-12 2016-05-31 Valinge Innovation Ab Method of manufacturing a layer
US9410319B2 (en) 2010-01-15 2016-08-09 Valinge Innovation Ab Heat and pressure generated design
US9556622B2 (en) 2007-11-19 2017-01-31 Valinge Innovation Ab Fibre based panels with a wear resistance surface
US10017950B2 (en) 2011-08-26 2018-07-10 Ceraloc Innovation Ab Panel coating
US10100535B2 (en) 2014-01-10 2018-10-16 Valinge Innovation Ab Wood fibre based panel with a surface layer
US10286633B2 (en) 2014-05-12 2019-05-14 Valinge Innovation Ab Method of producing a veneered element and such a veneered element
US10315219B2 (en) 2010-05-31 2019-06-11 Valinge Innovation Ab Method of manufacturing a panel
US10442164B2 (en) 2013-11-27 2019-10-15 Valinge Innovation Ab Floor, wall, or ceiling panel and method for producing same
US10442152B2 (en) 2013-11-27 2019-10-15 Valinge Innovation Ab Floorboard
US10513094B2 (en) 2013-10-18 2019-12-24 Valinge Innovation Ab Method of manufacturing a building panel
US10828881B2 (en) 2016-04-25 2020-11-10 Valinge Innovation Ab Veneered element and method of producing such a veneered element
US10899166B2 (en) 2010-04-13 2021-01-26 Valinge Innovation Ab Digitally injected designs in powder surfaces
US10913176B2 (en) 2013-07-02 2021-02-09 Valinge Innovation Ab Method of manufacturing a building panel and a building panel
US10981362B2 (en) 2018-01-11 2021-04-20 Valinge Innovation Ab Method to produce a veneered element
US11046063B2 (en) 2011-04-12 2021-06-29 Valinge Innovation Ab Powder based balancing layer
US11072156B2 (en) 2013-11-27 2021-07-27 Valinge Innovation Ab Method for producing a floorboard
US11167533B2 (en) 2018-01-11 2021-11-09 Valinge Innovation Ab Method to produce a veneered element and a veneered element
US11235565B2 (en) 2008-04-07 2022-02-01 Valinge Innovation Ab Wood fibre based panels with a thin surface layer
US11313123B2 (en) 2015-06-16 2022-04-26 Valinge Innovation Ab Method of forming a building panel or surface element and such a building panel and surface element
US11597187B2 (en) 2019-01-09 2023-03-07 Valinge Innovation Ab Method to produce a veneer element and a veneer element

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DE19751326C2 (en) * 1997-11-19 2001-01-04 Pfleiderer Unternehmensverwalt Process for the production of wood materials using used, residual and waste wood materials
DE10129750B4 (en) * 2001-06-20 2006-09-07 Institut für Holztechnologie Dresden gGmbH Material of wood particles, binders and aggregates and process for its preparation

Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9783996B2 (en) 2007-11-19 2017-10-10 Valinge Innovation Ab Fibre based panels with a wear resistance surface
US8349235B2 (en) 2007-11-19 2013-01-08 Ceraloc Innovation Belgium Bvba Recycling of laminate floorings
US8431054B2 (en) 2007-11-19 2013-04-30 Ceraloc Innovation Belgium Bvba Fibre based panels with a wear resistance surface
US9556622B2 (en) 2007-11-19 2017-01-31 Valinge Innovation Ab Fibre based panels with a wear resistance surface
US7811489B2 (en) 2007-11-19 2010-10-12 Valinge Innovation Ab Recycling of laminate floorings
US8617439B2 (en) 2007-11-19 2013-12-31 Valinge Innovation Ab Recycling of laminate floorings
US11235565B2 (en) 2008-04-07 2022-02-01 Valinge Innovation Ab Wood fibre based panels with a thin surface layer
US8419877B2 (en) 2008-04-07 2013-04-16 Ceraloc Innovation Belgium Bvba Wood fibre based panels with a thin surface layer
US9255405B2 (en) 2008-04-07 2016-02-09 Valinge Innovation Ab Wood fibre based panels with a thin surface layer
US8481111B2 (en) 2010-01-15 2013-07-09 Ceraloc Innovation Belgium Bvba Bright coloured surface layer
US8784587B2 (en) 2010-01-15 2014-07-22 Valinge Innovation Ab Fibre based panels with a decorative wear resistance surface
US8920874B2 (en) 2010-01-15 2014-12-30 Valinge Innovation Ab Method of manufacturing a surface layer of building panels
US11401718B2 (en) 2010-01-15 2022-08-02 Valinge Innovation Ab Bright coloured surface layer
US8663785B2 (en) 2010-01-15 2014-03-04 Valinge Innovation Ab Fibre based panels with a decorative wear resistance surface
US9410319B2 (en) 2010-01-15 2016-08-09 Valinge Innovation Ab Heat and pressure generated design
US8349234B2 (en) 2010-01-15 2013-01-08 Ceraloc Innovation Belgium Bvba Fibre based panels with a decorative wear resistance surface
US10899166B2 (en) 2010-04-13 2021-01-26 Valinge Innovation Ab Digitally injected designs in powder surfaces
US9296191B2 (en) 2010-04-13 2016-03-29 Valinge Innovation Ab Powder overlay
US8480841B2 (en) 2010-04-13 2013-07-09 Ceralog Innovation Belgium BVBA Powder overlay
US10344379B2 (en) 2010-04-13 2019-07-09 Valinge Innovation Ab Powder overlay
US11040371B2 (en) 2010-05-31 2021-06-22 Valinge Innovation Ab Production method
US10315219B2 (en) 2010-05-31 2019-06-11 Valinge Innovation Ab Method of manufacturing a panel
US8728564B2 (en) 2011-04-12 2014-05-20 Valinge Innovation Ab Powder mix and a method for producing a building panel
US9352499B2 (en) 2011-04-12 2016-05-31 Valinge Innovation Ab Method of manufacturing a layer
US10214913B2 (en) 2011-04-12 2019-02-26 Valinge Innovation Ab Powder based balancing layer
US11046063B2 (en) 2011-04-12 2021-06-29 Valinge Innovation Ab Powder based balancing layer
US11633884B2 (en) 2011-04-12 2023-04-25 Valinge Innovation Ab Method of manufacturing a layer
US9085905B2 (en) 2011-04-12 2015-07-21 Valinge Innovation Ab Powder based balancing layer
US10017950B2 (en) 2011-08-26 2018-07-10 Ceraloc Innovation Ab Panel coating
US11566431B2 (en) 2011-08-26 2023-01-31 Ceraloc Innovation Ab Panel coating
US9403286B2 (en) 2012-03-19 2016-08-02 Valinge Innovation Ab Method for producing a building panel
US8920876B2 (en) 2012-03-19 2014-12-30 Valinge Innovation Ab Method for producing a building panel
US9181698B2 (en) 2013-01-11 2015-11-10 Valinge Innovation Ab Method of producing a building panel and a building panel
US10493729B2 (en) 2013-01-11 2019-12-03 Valinge Innovation Ab Method of producing a building panel and a building panel
US11135814B2 (en) 2013-01-11 2021-10-05 Valinge Innovation Ab Method of producing a building panel and a building panel
US10913176B2 (en) 2013-07-02 2021-02-09 Valinge Innovation Ab Method of manufacturing a building panel and a building panel
US10513094B2 (en) 2013-10-18 2019-12-24 Valinge Innovation Ab Method of manufacturing a building panel
US10442164B2 (en) 2013-11-27 2019-10-15 Valinge Innovation Ab Floor, wall, or ceiling panel and method for producing same
US10442152B2 (en) 2013-11-27 2019-10-15 Valinge Innovation Ab Floorboard
US11485126B2 (en) 2013-11-27 2022-11-01 Valinge Innovation Ab Method for producing a floorboard
US10926509B2 (en) 2013-11-27 2021-02-23 Valinge Innovation Ab Floorboard
US11072156B2 (en) 2013-11-27 2021-07-27 Valinge Innovation Ab Method for producing a floorboard
US10857765B2 (en) 2013-11-27 2020-12-08 Valinge Innovation Ab Floor, wall, or ceiling panel and method for producing same
US11370209B2 (en) 2014-01-10 2022-06-28 Valinge Innovation Ab Method of producing a veneered element
US11318726B2 (en) 2014-01-10 2022-05-03 Valinge Innovation Ab Wood fibre based panel with a surface layer
US10100535B2 (en) 2014-01-10 2018-10-16 Valinge Innovation Ab Wood fibre based panel with a surface layer
US10988941B2 (en) 2014-01-10 2021-04-27 Valinge Innovation Ab Method of producing a veneered element
US11890847B2 (en) 2014-01-10 2024-02-06 Välinge Innovation AB Method of producing a veneered element
US10286633B2 (en) 2014-05-12 2019-05-14 Valinge Innovation Ab Method of producing a veneered element and such a veneered element
US11313123B2 (en) 2015-06-16 2022-04-26 Valinge Innovation Ab Method of forming a building panel or surface element and such a building panel and surface element
US10828881B2 (en) 2016-04-25 2020-11-10 Valinge Innovation Ab Veneered element and method of producing such a veneered element
US11904588B2 (en) 2016-04-25 2024-02-20 Välinge Innovation AB Veneered element and method of producing such a veneered element
US11167533B2 (en) 2018-01-11 2021-11-09 Valinge Innovation Ab Method to produce a veneered element and a veneered element
US11738540B2 (en) 2018-01-11 2023-08-29 Välinge Innovation AB Method to produce a veneered element and a veneered element
US11850829B2 (en) 2018-01-11 2023-12-26 Välinge Innovation AB Method to produce a veneered element and a veneered element
US10981362B2 (en) 2018-01-11 2021-04-20 Valinge Innovation Ab Method to produce a veneered element
US11597187B2 (en) 2019-01-09 2023-03-07 Valinge Innovation Ab Method to produce a veneer element and a veneer element
US11975508B2 (en) 2019-01-09 2024-05-07 Välinge Innovation AB Method to produce a veneer element and a veneer element

Also Published As

Publication number Publication date
DE4236266A1 (en) 1993-05-06
SE9103249L (en) 1993-05-06
SE9103249D0 (en) 1991-11-05

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