NO754379L

NO754379L -

Info

Publication number: NO754379L
Application number: NO754379A
Authority: NO
Inventors: E Keinaenen
Original assignee: Lemminkaeinen Oy
Priority date: 1975-12-23
Filing date: 1975-12-23
Publication date: 1977-06-24

Description

Fremgangsmåte ved overflatebelggingProcedure for surface coating

Foreliggende oppfinnelse angår en fremgangsmåte for overflatebelegging au en sponskive, presset mineralullskive eller bitumenbehandlet skiv/e, spesielt en porøs eller hård trefiberskive. The present invention relates to a method for surface coating a sponge disc, pressed mineral wool disc or bitumen-treated disc/s, especially a porous or hard wood fiber disc.

En porøs trefiberskive impregnert med bitumen, dvs. bitulit, anvendes i trekonstruerte vegger som forstivning ogvindbeskyt-telse. Ued anvendelse av bitulit som ytt.erflate i fasader bør skiven overflatebehandles. A porous wooden fiber disc impregnated with bitumen, i.e. bitulite, is used in wooden constructed walls as stiffening and wind protection. If bitulite is not used as a surface in facades, the slab should be surface treated.

Den eneste hittil kjente overflatebehandlingsmetode har vært å male skiven med latexmaling, vanligvis to ganger. Alkyd-malinger kan ikke anvendes, da de inneholder stoff som løser bitumen. Heller ikke olje- eller lakkmalinger er egnet for mal-ing av en porøs skive behandlet med bitumen. The only surface treatment method known to date has been to paint the disc with latex paint, usually twice. Alkyd paints cannot be used, as they contain substances that dissolve bitumen. Nor are oil or varnish paints suitable for painting a porous slab treated with bitumen.

Hvis man ønsker å blegge en bitulitvegg med rapping, kan man fastslå at de hittil kjente og anvendte murbrukstyper på fasader (sementmurbruk, kalksement, kalkmurbruk) ikke utviser tilstrekkelig evne til å feste til en. bitumenbehandlet porøs trefiberskive. Heftingen av rent sementbruk til en bituminøs overflate er så svak at det. ikke kan anbefales.å anvende rapping som overf latematerial.e for skiven selv sammen med metallnett, som ved rapping av en^trevegg. Med tiden løsner rappingen i hvert tilfelle<p>g nettet alene klarer ikke å bære rappingen. If you want to whitewash a bitulite wall with rapping, you can determine that the types of masonry that have been known and used on facades (cement mortar, lime cement, lime mortar) do not show sufficient ability to adhere to one. bitumen-treated porous wooden fiber board. The adhesion of pure cement use to a bituminous surface is so weak that it it cannot be recommended to use rapping as a surface material for the disc even together with metal mesh, as when rapping a wooden wall. Over time, the rapping loosens in each case<p>g the web alone is unable to carry the rapping.

For fremgangsmåten ifølge foreliggende oppfinnelse er det karakteristiske trekk det som inngår i patentkrav 1. For the method according to the present invention, the characteristic feature is that included in patent claim 1.

Ved anvendelse av denne fremgangsmåte kan en bitulitskive overflatebelegges med finpuss, hvilket ikke tidligere var mulig. Foruten på arbeidsplassen kan overflatens rapping også utføres i fabrikken i en varm hall, slik at man ved- overflatebeleggings-arbeide ikke er avhengig av vær og årstider. Skivene kan på normal måte lagres og bearbeides til sin endelige form på arbeidsplassen. Skiv/ene kan sages og spikres, mens det som tilsatsstoff anv/endte polyvinylacetat i overflatebelegget holder pussoverflat-en så elastisk at den ikke løsner. I bruken kan innblandes ulike fargestoffer og den ferdige overflate fåes i ønsket farge. Det oppnås således besparelser både i material- og arbeidskost-nader . By using this method, a bitulite disc can be surface-coated with fine plaster, which was not previously possible. In addition to the workplace, the surface rapping can also be carried out in the factory in a warm hall, so that surface coating work is not dependent on weather and seasons. The discs can normally be stored and processed to their final shape at the workplace. The boards can be sawn and nailed, while the polyvinyl acetate used as an additive in the surface coating keeps the plaster surface so elastic that it does not loosen. In use, various dyes can be mixed in and the finished surface can be obtained in the desired colour. Savings are thus achieved in both material and labor costs.

Fremgangsmåten ifølge oppfinnelsen skal beskrives nærmereThe method according to the invention shall be described in more detail

i det følgende.in the following.

Som heftningsforbedrende middel anvendes polymerisert polyvinylacetat, hvorav eksempelvis må nevnes den PVA-emulsjon som markedsføres under "Daraueld C" tilvirket av Deuey & Almy, USA. Til PVA-emulsjonen er det fordelaktig å tilsette forskjellige tilsatsstoffer, hvilke tilintetgjør muggsopp og andre organismer, forhindrer skumdannelse p.s.v. Polymerized polyvinyl acetate is used as an adhesion-enhancing agent, of which, for example, the PVA emulsion marketed under "Daraueld C" manufactured by Deuey & Almy, USA, must be mentioned. It is advantageous to add various additives to the PVA emulsion, which destroy molds and other organisms, prevent foaming, etc.

Eksempel på egnet kombinasjon av. tilsatsstoff og fordelakt-ige blandingsforhold fremgår av det etterfølgende. Mengdene av tilsatsstoffene er angitt i % av volumet av PUA-emulsjon. Example of suitable combination of. additives and advantageous mixing ratios can be seen from the following. The amounts of the additives are stated in % of the volume of PUA emulsion.

Metatin 5910 er en kunstharpiksdispersjon med PVA-, akryl-og styren-butadienharpikser. Produktet markedsføres av LejosQy. Nopco 8034 er et skumhindrende middel som inneholder kiselsyre-derivat dispergert i mineralolje. Produktet tilvirkes av Nopco °y- Metatin 5910 is a synthetic resin dispersion with PVA, acrylic and styrene-butadiene resins. The product is marketed by LejosQy. Nopco 8034 is an antifoam agent containing a silicic acid derivative dispersed in mineral oil. The product is manufactured by Nopco °y-

Bitulitskiven forbehandles med en blanding som erholdes når vann tilsettes i PUA-emulsjonen inneholdende de ovenfor angitte tilsatsstoffer. Hensiktsmessig blandingsforhold er 1 - 5, hensiktsmessig 2 volumdeler PVA-emulsjondg 1-2, hensiktsmessig 1 volumdel vann. Arbeidet utføres enten ved rulling eller pensling. Materialforbruket er ca. 0,3 l/m 2. The bitulite disc is pre-treated with a mixture obtained when water is added to the PUA emulsion containing the above-mentioned additives. Appropriate mixing ratio is 1 - 5, appropriate 2 parts by volume PVA emulsion to 1-2, appropriate 1 part by volume water. The work is carried out either by rolling or brushing. Material consumption is approx. 0.3 l/m2.

Overflatebeleggingsmassen fremstilles ved å blande sement-, murbruk der bindemidlet er sement, hensiktsmessig hvitsement og hvor fyllstoffet er sand samt kvartsmel. Hensiktsmessig blandingsforhold er 2 - 6, hensiktsmessig 3,8 vektdeler sement, 3 - 7, hensiktsmessig 5,0 vektdeler sand og 0,5 - 3, hensiktsmessig 1,2 vektdeler kvartssand. Dessuten kan det- i blandingen ved behov tilsettes fargegivende, vær- og alkalibestandig pigment. The surface coating mass is produced by mixing cement, mortar where the binder is cement, appropriate white cement and where the filler is sand and quartz flour. Suitable mixing ratios are 2 - 6, suitably 3.8 parts by weight of cement, 3 - 7, suitably 5.0 parts by weight of sand and 0.5 - 3, suitably 1.2 parts by weight of quartz sand. In addition, colour-giving, weather- and alkali-resistant pigment can be added to the mixture if necessary.

I det i bruket anvendte vann tilsettes før proporsjoner-ingen PVA-emulsjon som hensiktsmessig også inneholder de ovenfor angitte tilsatsstoffer. Et egnet blandingsforhold er 1 - 2, hensiktsmessig 1 volumdel PVA-emulsjon og 1 - 5, hensiktsmessig 2 volumdeler vann. In the water used in the mill, a PVA emulsion is added prior to proportions, which appropriately also contains the above-mentioned additives. A suitable mixing ratio is 1 - 2, suitably 1 part by volume of PVA emulsion and 1 - 5, suitably 2 parts by volume of water.

Hensiktsmessig proporsjonering av murbruk .er 2-6, hensiktsmessig 4 volumdeler fast stoff og 1 - 2, hensiktsmessig 1 volumdel væske. Blandingen kan utføres med spade eller, maskin-elt under anvendelse av betongblanding eller knamaskin tilkob-let til et trykkluftbor. Appropriate proportioning of mortar is 2-6, appropriate 4 parts by volume solid and 1 - 2, appropriate 1 part by volume liquid. The mixing can be carried out with a shovel or, by machine, using a concrete mix or a kneader connected to a compressed air drill.

På det med primerblandingen bestrøkne underlag påføres bunnmasseav bruk fremstilt på. ovenfor beskrevne måte. Bruket kan strykes eksempelvis med børste eller sprøyte. Platerialfor-bruket er ca. 1,0 kg/cm 2. On the substrate coated with the primer mixture, base material prepared for use is applied. method described above. The use can be ironed, for example, with a brush or spray. The plate material used is approx. 1.0 kg/cm2.

Når bunnmassen har stivnet så mye at den ikke-lenger ved berøring fester til hånden, dvs. umiddelbart etter påføring av bunnmassen, utføres den siste overflatebehandling. Hvis en korn-et overflate er ønsket,skpr sluttbehandlingen ved sprøyting. Overflatens grovhet reguleres med forskjellige munnstykker samt med trykkluft. Overf1ategrovheten er regulerbar mellom alterna-tiv fra appelsinskallignende form til grovpusslignende overflate. Materialforbruket W 1,5 - 2,0 kg/m<2>. When the primer has hardened so much that it no longer sticks to the hand when touched, i.e. immediately after applying the primer, the final surface treatment is carried out. If a grainy surface is desired, finish by spraying. The roughness of the surface is regulated with different nozzles and with compressed air. The surface roughness can be adjusted between alternatives from an orange peel-like shape to a coarse plaster-like surface. Material consumption W 1.5 - 2.0 kg/m<2>.

Hvis en slammet overflateeff ekt er ønsket, kan sluttbehandlingen utføres ved børsting. If a muddy surface effect is desired, the final treatment can be carried out by brushing.

Etter ca. 1 døgns herdetid kan skiven bearbeides med van-lige trebearbeidelsesredskap eller med f.eks. hånd- eller maskin-sag . After approx. 1 day's curing time, the disc can be processed with ordinary woodworking tools or with e.g. hand or machine saw.

Det anvendte overflatebelegg forsterker bitulitens overflate. Beleggoverflaten er også praktisk talt ubrennbar, hvilket naturligvis er en fordel med tanke på konstruksjonenes brann- The applied surface coating reinforces the bitulite's surface. The coating surface is also practically non-combustible, which is of course an advantage in terms of the construction's fire-

klassifisering.classification.

Det ferdige overflatebelegg er porøst og den tilvirkede overflates evne til å puste og gjennomtrenges av vann kan hensiktsmessig reguleres for forskjellige formål. Den tørkede overflate kan ved behov også behandles med egnet polyvinyl-acetatemuls jon, hvorved det erholde.s en halvglinsende, smuss-frastøtende, slite- og vaskebestandig tett overflate. Overflatens bestandighet ligger mellom en vanlig-malt overflates og bestandigheten til en overflate bekledd med kakel. Slikt overflatebelegg kan f.eks. anvendes innendørs i trappeganger, korridorer, vestibyler, venterom, kontorer o.s.v. The finished surface coating is porous and the manufactured surface's ability to breathe and be penetrated by water can be appropriately regulated for different purposes. If necessary, the dried surface can also be treated with a suitable polyvinyl acetate emulsion, whereby a semi-shiny, dirt-repellent, wear- and wash-resistant dense surface is obtained. The durability of the surface lies between that of a normal painted surface and the durability of a surface covered with tiles. Such a surface coating can e.g. used indoors in stairwells, corridors, vestibules, waiting rooms, offices, etc.

Det ved fremgangsmåten ifølge oppfinnelsen fremstilte overflatebelegg kan ved senere behov overflatebehandles med overflatebehandlingsmidler egnet for mineralske overflater, eksempelvis males. The surface coating produced by the method according to the invention can, if necessary, be surface treated with surface treatment agents suitable for mineral surfaces, for example painted.

Med fremgangsmåten ifølge oppfinnelsen kan.man overflate-belegge foruten en med bitumen behandlet porøs trefiberskive også betong- og andre mineraloverflater og andre tilsvarende overflater. Fremgangsmåten kan også anvendes for overflatebelegging av. en sponplate eller en presset mineralullplate. With the method according to the invention, in addition to a bitumen-treated porous wooden fiber board, concrete and other mineral surfaces and other similar surfaces can also be surface-coated. The method can also be used for surface coating of a chipboard or pressed mineral wool board.

Claims

1. Method for the surface coating of a chipboard, pressed mineral wool board or a board treated with bitumen, in particular a porous or hard wood fiber board, characterized in that the surface coating is carried out with a cement-based surface coating so that the surface is pre-treated with a mixture of polymerized polyvinyl acetate emulsion and water and then coated with cement mortar containing the above-mentioned polymerized polyvinyl acetate emulsion.

2. Method according to claim 1, characterized in that the polyvinyl acetate emulsion used is added with suitable additives, which prevents the appearance of micro-organisms and prevents foam formation.

3. Method according to claim 1 or 2, characterized in that the pretreatment is carried out with a mixture of polyvinyl acetate emulsion and water containing 1 - 5, suitably 2 parts by volume of polyvinyl acetate emulsion and 1 2, suitably 1 part by volume of water.

4. Method according to claims 1-3, characterized in that the surface coating takes place using cement with 2 - 6, suitably 3.8 parts by weight of cement, 3-7, suitably 5.0 parts by weight of sand and 0.5 - 3, suitably 1.2 parts by weight quartz flour • as. solid components.

5. Method according to claim 1-4, characterized in that a mixture containing 1-2, suitably 1 volume of polyvinyl acetate emulsion and 1-5 suitably 11 volume parts of water is used as liquid in the mill.

6. Method according to claims 4 and 5, characterized in that 2 - 6, suitably 4 parts by volume of solid and 1 - 2, suitably 1 part by volume of liquid are used in the mill.

7. Procedure according to claim - 6,. characterized in that polymerized polyvinyl acetate emulsion is spread over the surface coated with the mill.

8. Method according to claims 1-7, characterized in that the surface coated with the mill is treated with a surface treatment substance that is suitable for mineral . surfaces.