NO843976L - PROCEDURE FOR THE MANUFACTURING OF PLASTIC CARDS - Google Patents
PROCEDURE FOR THE MANUFACTURING OF PLASTIC CARDSInfo
- Publication number
- NO843976L NO843976L NO843976A NO843976A NO843976L NO 843976 L NO843976 L NO 843976L NO 843976 A NO843976 A NO 843976A NO 843976 A NO843976 A NO 843976A NO 843976 L NO843976 L NO 843976L
- Authority
- NO
- Norway
- Prior art keywords
- mat
- accordance
- plaster
- substrates
- particles
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000010440 gypsum Substances 0.000 claims description 15
- 229910052602 gypsum Inorganic materials 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- 239000011505 plaster Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 241000196324 Embryophyta Species 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 230000036571 hydration Effects 0.000 claims description 4
- 238000006703 hydration reaction Methods 0.000 claims description 4
- 239000010954 inorganic particle Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 229920000742 Cotton Polymers 0.000 claims description 2
- 241000208202 Linaceae Species 0.000 claims description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010902 straw Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims 1
- 239000011490 mineral wool Substances 0.000 claims 1
- 239000010451 perlite Substances 0.000 claims 1
- 235000019362 perlite Nutrition 0.000 claims 1
- 239000010455 vermiculite Substances 0.000 claims 1
- 235000019354 vermiculite Nutrition 0.000 claims 1
- 229910052902 vermiculite Inorganic materials 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 description 9
- 238000003892 spreading Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping
- B28B5/02—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type
Description
Den foreliggende oppfinnelse vedrører en fremgangsmåte til fremstilling av gipsholdige sponplater, hvor det på et underlag i stadig bevegelse dannes en endeløs matte som inneholder lignocellulose-; og/eller celluloseholdige og/eller uorganiske partikler, pulverformet gisp samt avbindingsvann for gipsen og som presses til ferdige plater. The present invention relates to a method for the production of gypsum-containing chipboards, where an endless mat containing lignocellulose is formed on a constantly moving substrate. and/or cellulose-containing and/or inorganic particles, powdered gas and setting water for the plaster and which are pressed into finished panels.
Fra DE-off.skrift 2.751.473 er det kjent et anlegg til kontinuerlig fremstilling av plater av fibermateriale og gips, hvor anlegget omfatter en strømaskin for blandingen av fibermateriale og gips, en fukteanordning samt en presse- og avvan-ningsanordning, hvorved det føres et endeløst silbånd over ledevalser under strøstasjonen i fukteanordningen og gjennom presse- og avvanningsanordningen. For, til forskjell fra en kontinuerlig presse med kileformet innløpskammer og innløps-pressevalser som arbeider mot hverandre, å kunne utføre pressingen uten valkeeffekt og uten oppstuing av fuktevannet under pressingen, er fukteanordningen utformet som sugefukteanordning med dusjedyser og utstyrt med en reguleringsanordning som kan innstilles på ønsket fukting, og presse- og avvanningsanordningen består av en platepresse som likeledes omfatter et endeløst avvanningsbånd som er ført over ledevalser og er utstyrt med drenkamre for avvanningsvannet. From DE-off.skrift 2,751,473, a plant is known for the continuous production of sheets of fiber material and gypsum, where the plant comprises a flow machine for the mixture of fiber material and gypsum, a moistening device as well as a pressing and dewatering device, whereby it is carried an endless sieve belt over guide rollers under the spreading station in the moistening device and through the pressing and dewatering device. In order, unlike a continuous press with a wedge-shaped inlet chamber and inlet press rollers that work against each other, to be able to carry out the pressing without a rolling effect and without back-up of the moistening water during pressing, the moistening device is designed as a suction moistening device with shower nozzles and equipped with a regulation device that can be set to desired wetting, and the pressing and dewatering device consists of a plate press which likewise comprises an endless dewatering belt which is guided over guide rollers and is equipped with drain chambers for the dewatering water.
Dette kjente anlegg er ikke uten ulemper. For det første forstyrres på grunn av sugevirkningen som utøves i materialet som skal presses en jevn oppbygging av det pressete materiale, noe som har avgjørende innflytelse på de ferdige platers fysikalske egenskaper, idet i det minste gips- og fiberpartikler automatisk kommer inn i det avsugete vann og må fjernes fra dette igjen på egnet måte. For det andre bevirker overskuddsvannet, som må føres bort, avløpsvann- og klarings-problemer som belaster miljøet og som betinger høye investerings- og driftskostnader for å løses. Som følge av anvendelsen av sugeenheter i sugefukteanordningen og i avvanningsanordningen og av fjerningen av fritt vann fra de gispsholdige fiberplater med relativt høy energiinnsats ved teknisk tørking oppstår det en ugunstig energibalanse. Endelig fremtrer det på gipsfiberplatens flater merker som skyldes silbåndene, som stadig må rengjøres. Disse er ofte en ulempe. This known facility is not without drawbacks. Firstly, due to the suction effect exerted in the material to be pressed, a uniform build-up of the pressed material is disturbed, which has a decisive influence on the physical properties of the finished panels, as at least gypsum and fiber particles automatically enter the extracted water and must be removed from this again in a suitable manner. Secondly, the excess water, which has to be carried away, causes wastewater and clarification problems that burden the environment and require high investment and operating costs to solve. As a result of the use of suction units in the suction moisture device and in the dewatering device and the removal of free water from the gypsum-containing fiberboards with a relatively high energy input during technical drying, an unfavorable energy balance arises. Finally, marks appear on the surfaces of the plasterboard due to the sieve belts, which must be constantly cleaned. These are often a disadvantage.
Formålet med den foreliggende oppfinnelse er å frem-bringe en fremgangsmåte som er energibesparende og miljøvennlig og gjør det mulig å fremstille jevnt oppbyggete plater med glatte flater. The purpose of the present invention is to produce a method which is energy-saving and environmentally friendly and makes it possible to produce evenly structured plates with smooth surfaces.
Dette oppnås ifølge oppfinnelsen med de trekk som er angitt i karakteristikken i krav 1. This is achieved according to the invention with the features stated in the characteristic in claim 1.
Det utføres ifølge oppfinnelsen hverken sugefukting av matten eller avvanning av matten under pressingen, og det anvendes ikke silbånd. Dessuten må det bare drives ut meget lite vann av den gipsholdige plate som er dannet ved pressingen av en mattestabel, idet de lignocellulose- og/eller celluloseholdige partikler før de blandes med gipspulver bare er litt fuktigere enn det som er nødvendig for avbindingen av gipsen. Fremgangsmåten ifølge oppfinnelsen utmerker seg derved med et forholdsvis lite energiforbruk og en høy grad av miljøvennlighet, og underlagene kan etter fjerning av platene tilbakeføres for gjenan-vendelse i produksjonsprosessen. According to the invention, neither suction wetting of the mat nor dewatering of the mat is carried out during the pressing, and no sieve belt is used. In addition, only very little water must be driven out of the gypsum-containing sheet formed by pressing a mat stack, as the lignocellulose and/or cellulose-containing particles before being mixed with gypsum powder are only slightly moister than is necessary for the setting of the gypsum. The method according to the invention is thereby characterized by a relatively low energy consumption and a high degree of environmental friendliness, and the substrates can be returned after removal of the plates for reuse in the production process.
Fordelaktige utførelsesformer av oppfinnelsen er angitt i de uselvstendige krav og blir i det etterfølgende til dels omtalt nærmere. Advantageous embodiments of the invention are set out in the independent claims and are discussed in more detail below.
Prinsipielt er det tilstrekkelig å ryste de med gipspulver blandete partikler på plane og luftugjennomtrengelige underlag for å danne en jevn, homogent oppbygget og enlags matte, hvorav man etter pressing oppnår en plate med glatte flater. In principle, it is sufficient to shake the particles mixed with gypsum powder on flat and air-impermeable surfaces to form a smooth, homogeneously structured and single-layered mat, from which a plate with smooth surfaces is obtained after pressing.
Ifølge en foretrukket utførelsesform av oppfinnelsen blir en partikkelblanding som kan strøes formet til en matte utelukkende ved vindsiktende strøing på de plane og luftugjennomtrengelige underlag. Dette utføres fordi matten etter pressingen i tillegg til glatte flater har bedre bøyespenning. According to a preferred embodiment of the invention, a particle mixture that can be spread is formed into a mat exclusively by windward spreading on the flat and air-impermeable substrates. This is done because the mat after pressing has better bending stress in addition to smooth surfaces.
For flerlags oppbygning av matten er det imidlertid anbefalelsesverdig med kastestrøing ("Wurfstreuen"), men også en kombinasjon av kastestrøing, og/eller rysting og/eller vindsiktende strøing. Således består en fornuftig kombinasjon ved formingen av matten i at det på underlagene først strøes et nedre dekksjikt ved vindsikting, hvoretter det rystes et midtsjikt på det på forhånd dannete dekksjikt, og til slutt strøes det på ved vindsikting et øvre dekksjikt på midtsjiktet som foreligger i formen. For multi-layer construction of the mat, however, it is recommendable to use cast bedding ("Wurfstreuen"), but also a combination of cast bedding, and/or shaking and/or windward bedding. Thus, a sensible combination when forming the mat consists in first spreading a lower cover layer on the substrates by wind screening, after which a middle layer is shaken on top of the previously formed cover layer, and finally an upper cover layer is spread on the middle layer by wind screening the shape.
En annen særlig foretrukket utførelsesform består i at det som eksotermt herdende bindemiddel i tillegg til naturgips anvendes kjemisk gips fra råfosfat, fra røkgassavsvovling o.l., som også kan anvendes i delvis eller sogar urenset form, i det minste med økonomisk akseptabel produksjonskapasitet. Hydrati-seringsprosessen med begynnende størkning, avsluttet størkning samt avsluttet hydratisering kan reguleres optimalt i tid enten ved hjelp av akseleratorer eller retarderingsmidler. Dersom begynnende størkning faller sammen med sammenpressingen av pakken til nominell tykkelse i pressen og pakken først åpnes når størk-ningen og helst også hydratiseringen er avsluttet, viser det seg at de oppnådde gipsavbundete plater er maksimalt fuktighets-bestandige og kan bearbeides maksimalt. Another particularly preferred embodiment consists in using chemical gypsum from raw phosphate, from flue gas desulphurisation etc. as exothermic curing binder in addition to natural gypsum, which can also be used in partially or even impure form, at least with economically acceptable production capacity. The hydration process with beginning solidification, finished solidification and finished hydration can be regulated optimally in time either by means of accelerators or retarders. If initial solidification coincides with the compression of the package to nominal thickness in the press and the package is only opened when the solidification and preferably also the hydration is finished, it turns out that the gypsum-bonded boards obtained are maximally moisture-resistant and can be processed to the maximum.
Endelig anvendes det ifølge en foretrukket utførelses-form av oppfinnelsen som cellulosepartikler findelte ettårige planter, f.eks. strå, lin, bomullstengler o.l., som forsinker avbindingen av gipsen. Finally, according to a preferred embodiment of the invention, finely divided annual plants are used as cellulose particles, e.g. straw, flax, cotton stalks etc., which delay the setting of the plaster.
Som resultat oppnås det ved fremgangsmåten ifølge oppfinnelsen altså et betydelig teknisk-økonomisk fremskritt. As a result, the method according to the invention thus achieves a significant technical and economic advance.
Claims (11)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833336243 DE3336243A1 (en) | 1983-10-05 | 1983-10-05 | METHOD FOR PRODUCING PLASTER-BASED PANELS |
Publications (1)
Publication Number | Publication Date |
---|---|
NO843976L true NO843976L (en) | 1985-04-09 |
Family
ID=6211080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO843976A NO843976L (en) | 1983-10-05 | 1984-10-03 | PROCEDURE FOR THE MANUFACTURING OF PLASTIC CARDS |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0143939A1 (en) |
DE (1) | DE3336243A1 (en) |
ES (1) | ES8506492A1 (en) |
FI (1) | FI75517C (en) |
NL (1) | NL8401036A (en) |
NO (1) | NO843976L (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3416824A1 (en) * | 1984-05-07 | 1985-11-07 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | METHOD FOR PRODUCING PLASTER-BOND MOLDED BODIES |
DE3840718A1 (en) * | 1988-12-02 | 1990-06-07 | Baehre & Greten | METHOD FOR PRODUCING MOLDED BODIES, IN PARTICULAR PANELS |
US5342566A (en) * | 1990-08-23 | 1994-08-30 | Carl Schenck Ag | Method of manufacturing fiber gypsum board |
DE4300428A1 (en) * | 1992-02-19 | 1993-08-26 | Wilhelm Rusteberg | Gypsum building material - contg. fibrous esp. waste material, used for boards, blocks and mouldings |
DE4239033A1 (en) * | 1992-03-19 | 1993-09-23 | Fraunhofer Ges Forschung | |
DE4323116C2 (en) * | 1993-07-10 | 1997-03-20 | Fraunhofer Ges Forschung | Process for controlling the hydration behavior of gypsum in the production of composite materials |
CA2130508C (en) * | 1993-08-20 | 2005-04-12 | Peter Douglas Chase | Process for making thin, sealant-coated, fiber-reinforced gypsum panel and panel made thereby |
DE19715310A1 (en) * | 1997-04-02 | 1998-10-08 | Kschiwan Marlis | Building material composition for the production of non-load carrying walls |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1109585B (en) * | 1958-06-04 | 1961-06-22 | Gerrit Jan Van Elten | Device for the production of lightweight panels |
DE1147522B (en) * | 1961-08-02 | 1963-04-18 | Isotex Leichtbauplattenwerk Ka | Method and device for the production of wood wool cement boards |
DE1653280C3 (en) * | 1966-06-23 | 1979-11-15 | G. Siempelkamp Gmbh & Co, 4150 Krefeld | Forming and press line in plants for the production of chipboard, fiberboard and the like |
DE1784657B2 (en) * | 1968-09-02 | 1977-12-01 | Ferma International Entwicklungswerk Fuer Rationelle Fertigbaumethoden Und Maschinenanlagen Gmbh & Co Kg, 7516 Karlsbad | Process for the continuous production of moldings, in particular panels, from plaster of paris and fibers |
-
1983
- 1983-10-05 DE DE19833336243 patent/DE3336243A1/en not_active Withdrawn
-
1984
- 1984-04-02 NL NL8401036A patent/NL8401036A/en not_active Application Discontinuation
- 1984-09-20 FI FI843682A patent/FI75517C/en not_active IP Right Cessation
- 1984-09-27 EP EP84111582A patent/EP0143939A1/en not_active Withdrawn
- 1984-10-03 NO NO843976A patent/NO843976L/en unknown
- 1984-10-04 ES ES536515A patent/ES8506492A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES536515A0 (en) | 1985-08-01 |
FI75517C (en) | 1988-07-11 |
EP0143939A1 (en) | 1985-06-12 |
ES8506492A1 (en) | 1985-08-01 |
FI75517B (en) | 1988-03-31 |
FI843682L (en) | 1985-04-06 |
FI843682A0 (en) | 1984-09-20 |
DE3336243A1 (en) | 1985-05-02 |
NL8401036A (en) | 1985-05-01 |
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