NO124220B - - Google Patents
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- Publication number
- NO124220B NO124220B NO170899A NO17089967A NO124220B NO 124220 B NO124220 B NO 124220B NO 170899 A NO170899 A NO 170899A NO 17089967 A NO17089967 A NO 17089967A NO 124220 B NO124220 B NO 124220B
- Authority
- NO
- Norway
- Prior art keywords
- rollers
- plate
- plates
- stated
- speed
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000005418 vegetable material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 6
- 229920002522 Wood fibre Polymers 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 239000002025 wood fiber Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011094 fiberboard Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000032258 transport Effects 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
- B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
Description
Fremgangsmåte og anordning for efterbehandling av plater av • vegetabilsk materiale. Method and device for finishing plates made of • vegetable material.
Ved fremstilling av trefiberplater underkastes plateemnene av fibermasse varmpressing ved hby temperatur og hbyt trykk, hvorved de får den endelige., sammenhengende fiberstruktur. Det er kjent å utsette de således fremstilte trefiberplater for ytterligere en varmebehandling ved hby temperatur, 150-210°C, og i lang tid, 1-8 timer, i den hensikt å bedre deres egenskaper hva angår bruddstyrke og vannmotstandsdyktighet. Denne ytterligere varmebehandling av platene er hittil blitt utfort i lukkede kamre, i hvilke luft bringes til å sirkulere med hby hastLg~het og temperatur. Ulempene ved denne metode er kostbare anlegg, om-stendelig og kostbar håndtering av platene liksom stor risiko for antennelse, hvorved store verdier kan gå tapt. In the production of wood fiber boards, the board blanks of fiber mass are subjected to hot pressing at high temperature and high pressure, whereby they obtain the final, continuous fiber structure. It is known to subject the thus produced wood fiber boards to a further heat treatment at a high temperature, 150-210°C, and for a long time, 1-8 hours, with the intention of improving their properties in terms of breaking strength and water resistance. This further heat treatment of the plates has hitherto been carried out in closed chambers, in which air is made to circulate at high speed and temperature. The disadvantages of this method are expensive facilities, laborious and expensive handling of the plates as well as a high risk of ignition, whereby large values can be lost.
For å gi platenes flater gode malingsegenskaper er det kjent å belegge platenes overflate med et sjikt av fin fibermasse for pressingen i varmpressen eller også behandle den ferdige plate med såkalt "sealer", oljer eller lignende. In order to give the plate's surfaces good painting properties, it is known to coat the plate's surface with a layer of fine fiber mass for pressing in the hot press or to treat the finished plate with so-called "sealer", oils or the like.
Oppfinnelsen vedrdrer en fremgangsmåte for å behandle plater av vegetabilsk materiale, f.eks. trefiber, slik at de får usedvanlige gode egenskaper i en eller flere av de ovenfor nevnte henseender under eliminering av de ulemper som kleber ved kjente metoder. Ifdlge oppfinnelsen skal således etterbehandlingen gjennomfbres raskt og uten å være avhengig av særskilte tilsetninger. The invention relates to a method for treating plates of vegetable material, e.g. wood fibre, so that they obtain exceptionally good properties in one or more of the above-mentioned respects while eliminating the disadvantages associated with known methods. According to the invention, the post-treatment must therefore be carried out quickly and without being dependent on special additives.
Oppfinnelsen kjennetegnes i det vesentlige ved at platene fores frem mellom to valser ved en temperatur på 250-500°C, idet valsene utover et trykk mot platen på minst 50 kp/cm i valsenes aksiale retning, hvorved platen fores frem med en relativhastighet på kontaktstedene overfor i det minste den ene av de roterende valser, slik at glidebevegelse oppstår mellom disse. The invention is essentially characterized by the fact that the plates are fed forward between two rollers at a temperature of 250-500°C, the rollers exerting a pressure against the plate of at least 50 kp/cm in the axial direction of the rollers, whereby the plate is fed forward with a relative speed at the points of contact opposite at least one of the rotating rollers, so that sliding movement occurs between them.
Oppfinnelsen skal nedenfor beskrives nærmere under henvisning til tegningen som viser som eksempel et skjematisk tverrsnitt gjennom en anordning for fremgangsmåtens utfbrelse, samtidig som også andre karakteristiske trekk for oppfinnelsen vil bli angitt. The invention will be described in more detail below with reference to the drawing which shows, for example, a schematic cross-section through a device for carrying out the method, while other characteristic features of the invention will also be indicated.
På tegningen er 10 et varmeisolert hus, i hvilket er anbragt et antall, f.eks. 3, valsepar 12, 14; 16, 18 og 20, 22. Valsene er av metall som f.eks. stålstbpegods, og har fortrinnsvis alle sammen polerte, sylindriske overflater. Valsene 16, 18 og fortrinnsvis også de andre valser er forsynt med indre anordninger for oppvarmning til hby temperatur, slik som 250-500°C. Opp-varmningen kan skje elektrisk eller ved varmolje eller annet varmemedium. In the drawing, 10 is a heat-insulated house, in which is placed a number, e.g. 3, roller pairs 12, 14; 16, 18 and 20, 22. The rollers are made of metal such as e.g. steel bar goods, and preferably all have polished, cylindrical surfaces. The rollers 16, 18 and preferably also the other rollers are provided with internal devices for heating to a high temperature, such as 250-500°C. The heating can be done electrically or with heating oil or another heating medium.
Trefiberplater 24 innfores i det av huset omsluttede kammer 25 gjennom ehspalte 26 og forlater kammeret gjennom en annen spalte 28, idet tetninger 30 resp. 32 kan være anordnet for lukning av spalten på sidene av platene. For innfbringen i kammeret kan de på den ene eller begge sider besprbytes med vann, olje, kunst- harpiks m.v. som tilfores munnstykkene 34 gjennom ledninger 36. Wood fiber boards 24 are inserted into the chamber 25 enclosed by the housing through slot 26 and leave the chamber through another slot 28, as seals 30 resp. 32 can be arranged for closing the gap on the sides of the plates. For introduction into the chamber, they can be sprayed on one or both sides with water, oil, synthetic resin etc. which is supplied to the nozzles 34 through lines 36.
De innbyrdes samvirkende valsepar påvirkes av (ikke viste) anordninger, slik at valsene under hbyt trykk presses mot platen 24 på begge sider av denne. Dette trykk, regnet pr. cm i val-sens aksialretning, "linjetrykket", kan andra 50-200 kp og mer. Et eller flere valsepar, fortrinnsvis de to ytre 12, 14 og 20, The interacting pairs of rollers are affected by devices (not shown), so that the rollers are pressed under high pressure against the plate 24 on both sides of it. This pressure, calculated per cm in the axial direction of the roller, the "line pressure", can be 50-200 kp and more. One or more pairs of rollers, preferably the two outer ones 12, 14 and 20,
22, transporterer platen gjennom kammeret 25 med tilsiktet hastighet under utbvelse av trykk mot platen. Disse valsepar over-forer fortrinnsvis også varme til platen. Et eller flere valsepar, i nærværende tilfelle det midterste 16, 18, har en annen periferihastighet enn trefiberplatenes 24 fremmatningshastighet. Denne periferihastighet kan således være hbyere eller lavere 22, transports the plate through the chamber 25 at the intended speed while exerting pressure against the plate. These pairs of rollers preferably also transfer heat to the plate. One or more roller pairs, in the present case the middle one 16, 18, have a different peripheral speed than the wooden fiber boards 24 feed speed. This peripheral speed can thus be higher or lower
enn de andre valsepars, men gå i samme retning. Derved slurer eller glir valsene 16, 18 mot platene, og man får en slags stryke-jernseffekt i forbindelse med det hbye trykk og. den hbye temperatur, hvorved platene får den bnskede overflatebehandling, slik at de får gode malingsegenskaper ved at porer i platenes overflate lukkes samtidig som oppreisning av fibre elimineres. Man kan også presse ferdigtorkede, porbse plater slik at disse blir tynnere og altså får hbyere spesifikk vekt og styrke, eventuelt i kombinasjon med forbedrede malingsegenskaper. than the other roller pairs, but go in the same direction. Thereby the rollers 16, 18 slip or slide against the plates, and you get a kind of iron effect in connection with the high pressure and. the high temperature, whereby the plates get the desired surface treatment, so that they get good painting properties by closing the pores in the plates' surface at the same time as eliminating fibers. You can also press pre-dried, porous plates so that these become thinner and therefore have a higher specific weight and strength, possibly in combination with improved painting properties.
Kammeret 25 kan være forsynt med et avlbp 38, i hvilket er anbragt en ventil 40 for regulering av temperaturen i dette. The chamber 25 can be provided with an avlbp 38, in which a valve 40 is arranged for regulating the temperature therein.
Overflatebehandlingen av de trefiberplater 24 som passerer kammeret 25 i rekke efter hverandre kan være ensidig eller dobbeltsidig. I det fbrste tilfellet behbver bare den ene av valsene 16, 18 å ha annen relativ hastighet enn platenes matnings-hastighet. Ved dobbeltsidig overflatebehandling av platene 24 kan på deres ene side forekommende viremerker slipes bort på forhånd. Derved kan man altså med utgangspunkt fra en ensidig plate tilvirke en tosidig, glatt, såkalt S-2-S-plate. Denne sistnevnte plate har hittil bare kunnet fremstilles ifblge den såkalte våt-tbrrmetoden eller tbrrmetoden. Platene som be-handles kan være hårde, halvhårde eller porbse. The surface treatment of the wooden fiber boards 24 which pass through the chamber 25 in succession can be one-sided or double-sided. In the first case, only one of the rollers 16, 18 needs to have a different relative speed than the feeding speed of the plates. With double-sided surface treatment of the plates 24, wire marks occurring on one side can be sanded away in advance. In this way, starting from a single-sided plate, a double-sided, smooth, so-called S-2-S plate can be manufactured. This latter plate has so far only been able to be produced according to the so-called wet-drying method or dry-drying method. The boards treated can be hard, semi-hard or porous.
De valser som sorger for overflatebehandlingen, ved utfbrelses- eksemplet den ene eller begge valser 16, 18, kan også være stillestående eller rotere i motsatt retning av platenes mat-ningsretning, hvorved påvirkningen av platenes overflate blir særlig stor. Det antall valsepar som tjener som medbringer for platene 24 er fortrinnsvis stbrre enn antall slurefriksjons-skapende valsepar, spesielt når samtlige har i samme grad polerte sylinderoverflater. The rollers which take care of the surface treatment, in the embodiment one or both rollers 16, 18, can also be stationary or rotate in the opposite direction to the feeding direction of the plates, whereby the influence on the surface of the plates becomes particularly large. The number of roller pairs that serve as carriers for the plates 24 is preferably greater than the number of slip friction-creating roller pairs, especially when all have equally polished cylinder surfaces.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE17032/66A SE333238B (en) | 1966-12-12 | 1966-12-12 | KIT AND DEVICE FOR TREATING VEGETABLE MATERIAL PLATES |
Publications (1)
Publication Number | Publication Date |
---|---|
NO124220B true NO124220B (en) | 1972-03-20 |
Family
ID=20303160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO170899A NO124220B (en) | 1966-12-12 | 1967-12-08 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3679790A (en) |
DE (1) | DE1653188A1 (en) |
FR (1) | FR1547950A (en) |
NO (1) | NO124220B (en) |
SE (1) | SE333238B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD111326A5 (en) * | 1973-10-12 | 1975-02-12 | ||
US4007076A (en) * | 1974-12-30 | 1977-02-08 | Masonite Corporation | Post-press embossing of a consolidated man-made board |
DE2540613C2 (en) * | 1975-09-12 | 1983-10-27 | Sollich Gmbh & Co Kg, 4902 Bad Salzuflen | Device for shaping masses used in confectionery production into praline inserts, bars or other shaped pieces |
US4024014A (en) * | 1975-12-15 | 1977-05-17 | Conwed Corporation | Non-combustible hardboard sheet |
FR2379373A1 (en) * | 1977-02-07 | 1978-09-01 | Masonite Corp | Applying permanent relief images to wood - by wetting the wood surface and hot pressing against a relief plate |
GB8729922D0 (en) * | 1987-12-22 | 1988-02-03 | Emhart Materials Uk | Apparatus for controlling thickness of heat-softenable sheet material |
FR2640546B1 (en) * | 1988-12-21 | 1991-04-12 | Saint Gobain Isover | PROCESS FOR OBTAINING A SURFACE INSULATION PANEL BASED ON MINERAL FIBERS |
US5352110A (en) * | 1991-03-12 | 1994-10-04 | Takeda Chemical Industries, Ltd. | Molding apparatus for molding fiber reinforced resin with plurality of roll pairs |
DE19812523A1 (en) * | 1998-03-21 | 1999-11-18 | Schenck Panel Production Syste | Surface structuring method for panels of derived timber products |
DK177227B1 (en) * | 2008-07-10 | 2012-07-23 | Si Holding Aulum Aps | Process for edge treatment on items made of MDF material |
US8333582B2 (en) * | 2009-02-20 | 2012-12-18 | Azek Building Products, Inc. | Apparatus and method for edge sealing of foam boards |
CN106827165B (en) * | 2016-12-25 | 2018-11-16 | 重庆义三木业有限公司 | The cooling means of particieboard |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2335462A (en) * | 1940-07-27 | 1943-11-30 | Armstrong Cork Co | Method and apparatus for treating felt |
US3021244A (en) * | 1955-12-23 | 1962-02-13 | John G Meiler | Process for producing high density hardboard |
BE619783A (en) * | 1961-07-05 | |||
US3230287A (en) * | 1962-09-27 | 1966-01-18 | Weyerhaeuser Co | Process for manufacturing moldable fibrous panels |
FR1490887A (en) * | 1965-09-08 | 1967-08-04 | Johns Manville | Manufacturing process for fibrous products |
-
1966
- 1966-12-12 SE SE17032/66A patent/SE333238B/en unknown
-
1967
- 1967-12-08 NO NO170899A patent/NO124220B/no unknown
- 1967-12-08 DE DE19671653188 patent/DE1653188A1/en active Pending
- 1967-12-12 FR FR131870A patent/FR1547950A/en not_active Expired
-
1970
- 1970-06-12 US US48864A patent/US3679790A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3679790A (en) | 1972-07-25 |
FR1547950A (en) | 1968-11-29 |
SE333238B (en) | 1971-03-08 |
DE1653188A1 (en) | 1971-11-25 |
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