NO862275L - CASTING FORM AND PROCEDURE FOR MANUFACTURING THIS. - Google Patents
CASTING FORM AND PROCEDURE FOR MANUFACTURING THIS.Info
- Publication number
- NO862275L NO862275L NO862275A NO862275A NO862275L NO 862275 L NO862275 L NO 862275L NO 862275 A NO862275 A NO 862275A NO 862275 A NO862275 A NO 862275A NO 862275 L NO862275 L NO 862275L
- Authority
- NO
- Norway
- Prior art keywords
- board
- wood
- layer
- layers
- laminate
- Prior art date
Links
- 238000005266 casting Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 5
- 239000010410 layer Substances 0.000 claims description 52
- 239000000463 material Substances 0.000 claims description 24
- 239000002023 wood Substances 0.000 claims description 21
- 239000011162 core material Substances 0.000 claims description 18
- 229920002522 Wood fibre Polymers 0.000 claims description 16
- 239000002025 wood fiber Substances 0.000 claims description 16
- 239000011094 fiberboard Substances 0.000 claims description 12
- 239000002344 surface layer Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 10
- 239000011093 chipboard Substances 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 6
- 238000005304 joining Methods 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000012792 core layer Substances 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000011120 plywood Substances 0.000 description 7
- 235000018185 Betula X alpestris Nutrition 0.000 description 5
- 235000018212 Betula X uliginosa Nutrition 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 241000487918 Acacia argyrodendron Species 0.000 description 1
- 235000011222 chang cao shi Nutrition 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/10—Next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/08—Reinforcements
Description
Foreliggende oppfinnelse angår et som komposittlamihat oppbygget platemateriale som i første rekke er beregnet på å skulle anvendes til formluker i betongstøpeformer. Den ifølge oppfinnelsen fremstilte laminatplate kjennetegnes primært The present invention relates to a sheet material built up as a composite laminate which is primarily intended to be used for hatches in concrete moulds. The laminate board manufactured according to the invention is characterized primarily
ved at dens bærende ytterskikt består av en med innbakte glassfibertråder armert trefiberplate eller sponplate samt ved at innerskiktet eller -skiktene består; av platemateriale av fortrinnsvis lavere spesifikk vekt enn nevnte bærende ytterskikt. De øvrige karakteriserende trekk for platen og frem-gangsmåten for dens fremstilling fremgår av de etterfølgende patentkrav. in that its supporting outer layer consists of a wood fiber board or chipboard reinforced with baked-in glass fiber threads and in that the inner layer or layers consist; of plate material of preferably a lower specific weight than said supporting outer layer. The other characterizing features of the plate and the method of its production appear in the subsequent patent claims.
Ved valget av platemateriale for betongstøpeluker gjel-der det generelt at det stilles meget store krav til platenes brudd- og bøyningsfa.sthet, formatbestandighet og væskebestan-dinghet. Videre må platene ha en meget stor overflatefast- When choosing plate material for concrete manhole covers, it generally applies that very high demands are placed on the plates' breaking and bending strength, format resistance and liquid resistance. Furthermore, the plates must have a very large surface
het og god overflatefinish (god slippevne). Alle disse egenskaper, skal i siste omgang forenes med kravet om en rimelig spesifikk vekt og en akseptabel pris. hot and good surface finish (good slip). All these characteristics must ultimately be reconciled with the requirement for a reasonable specific weight and an acceptable price.
Det materiale som for tiden er helt dominerende på formplateområdet, er væskebestandig, limt plywood med et overflatebelegg av fenolharpiksfolie. Plywooden kan bestå av et varierende antall trefinérskikt av ulik tykkelse, og ulike treslag kan også velges i finérskiktene, avhengig av platens anvendelsesområde (påtenkt antall støpninger, ventil- eller veggstøping, formstørrelse, m.m.). Jo større krav som stilles til formplatens egenskaper, desto vanskeligere er det å få frem en fullgod plywoodplate til en rimelig pris. Ved høye støpetrykk og gjentatt anvendelse kreves det således en meget tykk og kostbar plywood med inntil 15 skikt av høyverdig bjør-kefinér. Da samtlige av disse finérskikt skal limes sammen med væskebestandig lim og overflateskiktet skal behandles The material that is currently completely dominant in the formboard area is liquid-resistant, glued plywood with a surface coating of phenolic resin foil. The plywood can consist of a varying number of wood veneer layers of different thicknesses, and different types of wood can also be chosen in the veneer layers, depending on the board's area of application (intended number of moldings, valve or wall molding, mold size, etc.). The greater the demands placed on the formboard's properties, the more difficult it is to produce a perfectly good plywood board at a reasonable price. With high molding pressures and repeated use, a very thick and expensive plywood with up to 15 layers of high-quality birch veneer is thus required. Then all of these veneer layers must be glued together with liquid-resistant glue and the surface layer must be treated
til den størst mulige jevnhet og hårdhet, sier det seg selv at en slik plate blir meget kostbar. Dessuten er det med årene blitt stadig vanskeligere å tilveiebringe den høyverdige finér som kreves for disse plater. to the greatest possible smoothness and hardness, it goes without saying that such a plate will be very expensive. Moreover, over the years it has become increasingly difficult to provide the high-quality veneer required for these boards.
Eii måte å søke å løse de ovennevnte problemer på har vært å fremstille formplater av enklere finérmateriale og å akseptere et mindre antall støpninger for hver plate. Det da nødvendige, hyppigere bytte av plater i formlukene koster imidlertid også penger, og dessuten oppstår det også andre problemer, som f.eks. at platene får dårligere bøyningsstiv-het. Et meget alvorlig problem ved bruk av "dårligere" finér i overflateskiktet er at det fåes en utilfredsstillende støp-overflate. Overflatefinéren er ganske enkelt for ujevn til å gi et godt feste til overflateskiktet og dessuten så myk at platens overflate lett skades allerede ved lette trykk og støt. One way of seeking to solve the above problems has been to produce form plates of simpler veneer material and to accept a smaller number of castings for each plate. However, the necessary, more frequent replacement of plates in the mold hatches also costs money, and in addition, other problems also arise, such as e.g. that the plates have poorer bending stiffness. A very serious problem when using "poorer" veneers in the surface layer is that an unsatisfactory cast surface is obtained. The surface veneer is simply too uneven to provide a good attachment to the surface layer and, moreover, so soft that the plate's surface is easily damaged even by light pressure and impact.
En tenkelig mulighet for å få frem en formplate av ønsket slag ville være å laminere en "platekjerne" av enklere materiale med ytterskikt av et fra styrke- og hårdhetssyns-punkt mer høyverdig materiale. Noe slikt materiale som lett lar seg laminere med et kjernemateriale av tre og dessuten oppfyller styrke-, vekt- og kostnadskravene, er imidlertid hittil ikke blitt fremskaffet. At man vil beholde tre som kjernemateriale beror naturligvis på at det i seg selv er egnet for formålet og dessuten kan tilveiebringes til en rimelig pris dersom det ikke stilles altfor store kvalitetskrav. Man har også som et kompromiss fremstilt formplater med en kjerne av finérlaminat av lavere kvalitet og overflateskikt av høyverdig bjørkefinér. Det gjenstår imidlertid det problem å oppnå på denne måte en høyverdig plate, da ytterfinérens bedre egenskaper ikke er tilstrekkelige til helt å oppveie den enklere kjernes lavere bruddfasthet, stivhet og hårdhet. Hva angår hårdheten, kan det f.eks nevnes at plateoverflaten lett skades av trykkpåkjenninger, fordi overflatefinéren ikke er tilstrekkelig stiv til alene å ta opp trykket, men presses inn i det underliggende mykere kjernelaminat. A conceivable possibility for producing a form plate of the desired type would be to laminate a "plate core" of simpler material with an outer layer of a higher quality material from the point of view of strength and hardness. However, some such material which can be easily laminated with a core material of wood and which also meets the strength, weight and cost requirements has not yet been obtained. The fact that you want to keep wood as the core material naturally depends on the fact that it is in itself suitable for the purpose and can also be provided at a reasonable price if there are not excessively high quality requirements. As a compromise, molded panels have also been produced with a core of lower-quality veneer laminate and a surface layer of high-quality birch veneer. There remains, however, the problem of obtaining a high-quality plate in this way, as the outer veneer's better properties are not sufficient to completely offset the simpler core's lower breaking strength, stiffness and hardness. Regarding the hardness, it can be mentioned, for example, that the plate surface is easily damaged by pressure stresses, because the surface veneer is not sufficiently rigid to take up the pressure alone, but is pressed into the underlying softer core laminate.
Man kan således konstatere at ytre laminatskikt av tremateriale men med større stivhet, hårdhet og bruddfasthet enn bjørkefinéren ville kreves for at et enklere kjernetrelami-nat skulle kunne anvendes i formplater av høy kvalitet. Et slikt trebasert platemateriale skulle kunne være en trefiberplate hvis stivhet og hårdhet i og for seg er tilstrekkelige. Fiberplaten oppviser dog den ulempe at selv om bruddfastheten visserlig er meget større enn trefinérens bruddfasthet målt i finérens tverretning, så er bruddfastheten bare halvparten så stor som finérens, målt i dens lengderetning (fiberretningen). Dessuten er trefiberplater normalt relativt fuktighetsøm-fintlige og sveller lett når de utsettes for fuktighet. Dersom man til dette legger til at trefiberplater har høyere spesifikk vekt enn trefinér, kan trefiberplater prinsipielt uteluk-kes som utgangsmateriale for formstøpeplater. It can thus be stated that an outer laminate layer of wood material but with greater stiffness, hardness and fracture resistance than birch veneer would be required for a simpler core wood laminate to be used in high-quality shaped panels. Such a wood-based board material could be a wood fiber board whose stiffness and hardness in and of itself are sufficient. However, the fiber board has the disadvantage that, although the fracture strength is certainly much greater than the wood veneer's fracture strength measured in the veneer's transverse direction, the fracture strength is only half as great as the veneer's, measured in its longitudinal direction (the fiber direction). Furthermore, wood fiber boards are normally relatively sensitive to moisture and swell easily when exposed to moisture. If one adds to this that wood fiber boards have a higher specific weight than wood veneer, wood fiber boards can in principle be ruled out as a starting material for molded boards.
Det har imidlertid nu vist seg at trefiberplater som under fremstillingen er blitt armert med innbakede glassfibertråder, oppviser overraskende gode egenskaper, dersom de anvendes som overflateskikt i formplater med en kjerne av ett eller flere skikt av tremateriale av enklere kvalitet. Riktig kombi-nert får en slik formplate som er fremstilt med overflateskikt av glassfiberarmert trefiberplate styrkeegenskaper og overfla-tekvalitet som er like gode som eller bedre enn for en plywood-formplate av høy kvalitet fremstilt på konvensjonell måte som ovenfor beskrevet. However, it has now been shown that wood fiberboards which have been reinforced with baked-in glass fiber threads during manufacture show surprisingly good properties, if they are used as a surface layer in formboards with a core of one or more layers of wood material of simpler quality. Properly combined, such a form plate produced with a surface layer of glass fiber reinforced wood fiber board gets strength properties and surface quality that are as good as or better than for a high quality plywood form plate produced in the conventional way as described above.
For nærmere beskrivelse av oppfinnelsen vises det til de vedføyede tegningsfigurer (fig. 1, 2 og 3) som viser tre utførelsesformer av formplater ifølge oppfinnelsen. Ved hjelp av disse figurer skal oppfinnelsen beskrives nærmere nedenfor. For a more detailed description of the invention, reference is made to the attached drawings (fig. 1, 2 and 3) which show three embodiments of form plates according to the invention. With the help of these figures, the invention will be described in more detail below.
På fig. 1 vises en formplate bygget opp av flere skikt, ca. 21 mm tykk, for anvendelse i formluker for vertikale be-tongs tøpef ormer . Denne plate har en kjerne bestående av 5 finérskikt (11-15), av hvilke det midterste (13) og de to ytre (11 og 15) er anbragt med stående fiberretning, mens de to mellomliggende skikt (12 og 14) er anbragt med liggende fiberretning, d.v.s. dreiet 90° i forhold til de inntilliggende finérskikt. Ytterst på hver side av finérkjernen er det påført et glassfiberarmert trefiberplateskikt, hvilke fiberplateskikt (16 og 17) i sin tur er blitt belagt på overflaten med en fenolharpiksfolie av i og for seg kjent type. Den glassfiberarmerte trefiberplate utgjøres av en relativt tynn (2,5-3,5 In fig. 1 shows a form plate made up of several layers, approx. 21 mm thick, for use in mold hatches for vertical concrete casting moulds. This board has a core consisting of 5 veneer layers (11-15), of which the middle one (13) and the two outer ones (11 and 15) are arranged with vertical fiber direction, while the two intermediate layers (12 and 14) are arranged with horizontal fiber direction, i.e. rotated 90° in relation to the adjacent veneer layers. At the far end of each side of the veneer core, a fiberglass-reinforced wooden fiberboard layer has been applied, which fiberboard layers (16 and 17) have in turn been coated on the surface with a phenolic resin foil of a known type per se. The fibreglass-reinforced wooden fiberboard consists of a relatively thin (2.5-3.5
mm tykk) trefiberplate i hvilken langsgående, parallelle glassfibertråder eller -strenger er blitt innbaket med 20-60 mm mellomrom under trefiberplatens fremstilling. De på fig. 1 mm thick) wood fiber board in which longitudinal, parallel fiberglass threads or strands have been baked in at 20-60 mm intervals during the wood fiber board's production. Those in fig. 1
viste ytre trefiberskikt er i dette tilfelle blitt plassert ved armeringstrådretningen stående, d.v.s. slik at armeringstrådene utløper vinkelrett på fiberretningen i underliggende finérskikt. the outer wooden fiber layer shown has in this case been placed in the direction of the reinforcing wire standing up, i.e. so that the reinforcing wires run out perpendicular to the fiber direction in the underlying veneer layer.
Med den her beskrevne oppbygning av formplaten oppnås flere fordeler. Som tidligere nevnt har trefiberplaten i seg selv en brudd- og strekkfasthet som ef ca. halvparten så stor som trefinérens i dennes fiberretning. I finérens tverrfiber-retning er styrken bare en brøkdel av styrken i fiberretningen, og man kan prinsipielt regne med at trefiberplatens styrke i dette tilfelle er minst fem ganger så stor. Generelt skulle man altså ved en sammenligning mellom plywood (krysslaminert finér) og trefiberplate av samme tykkelse kunne anta at disse materialer har likeartede brudd- og strekkfasthetsegenskaper. Den glassfiberarmerte trefiberplate har imidlertid fått en øket brudd- og strekkfasthet og formstabilitet i armeringsretningen som gjør disse egenskaper sammenlignbare med finérens styrkeegenskaper i fiberretningen. Ved at man som nevnt lamine-rer de armerte trefiberplateskikt med armeringsretningen på tvers av underliggende finérskikts fiberretning får platelaminatet i sine ytterskikt en strekk- og bruddfasthet som er vel så stor som om to bjerkefinérer var blitt krysslaminert i overflateskiktet. Da det er overflateskiktets brudd- og strekkfasthet som hovedsakelig er avgjørende for laminatplatens totale brudd- og bøyningsstivhet, oppnås det til tross for kjerneskiktets lavere kvalitet en formplate med meget gode styrkeegenskaper og formstabilitet. Dessuten oppnås den vesentlige forbedring at platens overflate blir markert bedre med hensyn til jevnhet og overflatefasthet enn hva som kan oppnås selv med den beste sort trefinér. With the structure of the form plate described here, several advantages are achieved. As previously mentioned, the wood fiberboard itself has a breaking and tensile strength of approx. half as large as the wood veneer in its grain direction. In the cross-fiber direction of the veneer, the strength is only a fraction of the strength in the fiber direction, and one can in principle expect that the wood fiber board's strength in this case is at least five times as great. In general, therefore, in a comparison between plywood (cross-laminated veneer) and wood fiberboard of the same thickness, one should be able to assume that these materials have similar fracture and tensile strength properties. However, the fibreglass-reinforced wooden fiberboard has an increased breaking and tensile strength and dimensional stability in the reinforcement direction, which makes these properties comparable to the veneer's strength properties in the fiber direction. By laminating the reinforced wood fiber board layers with the reinforcement direction across the underlying veneer layer's fiber direction, as mentioned, the board laminate in its outer layers has a tensile and breaking strength that is probably as great as if two birch veneers had been cross-laminated in the surface layer. As it is the breaking and tensile strength of the surface layer that is mainly decisive for the total breaking and bending stiffness of the laminate board, despite the lower quality of the core layer, a shaped board with very good strength properties and dimensional stability is achieved. Moreover, the significant improvement is achieved that the board's surface is markedly better with regard to evenness and surface firmness than what can be achieved even with the best black wood veneer.
Mens den på fig. 1 viste plate har en kjerne av et antall finérskikt av lav densitet og kvalitet, utgjøres den på fig. 2 viste formplate av en sponplatekjerne (21) med påla-minerte ytterskikt (22-25) av glassfiberarmert trefiberplate. I dette tilfelle er to trefiberplater med korslagte armerings-retninger blitt anbragt på hver sin side av kjerneplaten, hvorved det oppnås en kryssarmering på begge sider av platen. Den i dette^tilfelle benyttede sponplatekjerne utgjøres hensiktsmessig av en mer fuktighetsresistent sponplate av kvalitet V-313. En formplate av denne oppbygning får meget god formstabilitet, mens dens relativt høye spesifikke vekt i visse sam-menhenger kan representere en ulempe. While the one in fig. 1 plate shown has a core of a number of veneer layers of low density and quality, it is represented in fig. 2 shown form plate of a chipboard core (21) with laminated outer layers (22-25) of glass fiber reinforced wood fiber board. In this case, two wooden fiber boards with crossed reinforcement directions have been placed on opposite sides of the core board, whereby a cross reinforcement is achieved on both sides of the board. The chipboard core used in this case is suitably made up of a more moisture-resistant chipboard of quality V-313. A form plate of this structure achieves very good form stability, while its relatively high specific weight can represent a disadvantage in certain contexts.
En tredje variant av formplateh" ifølge oppfinnelsenA third variant of the formplate according to the invention
er vist på fig. 3. Denne formplate, som er spesielt egnet for ventilstøping, består av en kjerne av tre finérskikt, is shown in fig. 3. This mold plate, which is particularly suitable for valve casting, consists of a core of three veneer layers,
av hvilke det midterste (31) utgjøres av en ca. 4 mm tykk bartrefinér og de to ytre (32 og 33) består av ca. 1,5 mm tykk bjørkefinér anbragt med fiberretningen i 90° vinkel med midtskiktets fiberretning. Utenpå hver side av kjernen er det anbragt 2,5 mm tykke trefiberplater (34 og 35). Den totale tykkelse av den ferdige, med overflateskikt belagte plate for ventilstøping er således ca. 12 mm. of which the middle one (31) consists of an approx. 4 mm thick softwood veneer and the two outer ones (32 and 33) consist of approx. 1.5 mm thick birch veneer placed with the grain direction at a 90° angle to the grain direction of the middle layer. On the outside of each side of the core, 2.5 mm thick wood fiber boards (34 and 35) are placed. The total thickness of the finished, with surface layer coated plate for valve casting is thus approx. 12 mm.
Ved fremstillingen av de ifølge oppfinnelsen utførte laminatplater kan sammenføyningen av de inngående delskikt foretas såvel med flytende lim - som pålegges ved hjelp av egnede limspredere - som ved bruk av i og for seg kjente limfolier. Presstrykk, presstider og herdetemperaturer som anvendes for sammenføyningen, avpasses etter laminattykkel-sen. Således har presstrykk på 10-30 kp/cm 2vist seg velegnede, mens presstidene kan varieres mellom 5 og 30 minutter, avhengig av platens totale tykkelse. Herdetemperaturen har vist seg å burde ligge mellom 125 og 225°C. For å oppnå nødvendig kant-beskyttelse/fuktighetsbeskyttelse forsynes de ferdige laminatplater med et egnet kanbeskyttelsesbelegg av tilsvarende type som dem der anvendes ved fremstilling av konvensjonelle formplater av plywood. In the production of the laminate boards made according to the invention, the joining of the sub-layers can be done both with liquid glue - which is applied with the help of suitable glue spreaders - and with the use of per se known adhesive foils. Pressing pressure, pressing times and curing temperatures used for joining are adapted to the laminate thickness. Thus, pressing pressures of 10-30 kp/cm 2 have proven suitable, while the pressing times can be varied between 5 and 30 minutes, depending on the total thickness of the plate. The curing temperature has proven to be between 125 and 225°C. In order to achieve the necessary edge protection/moisture protection, the finished laminate boards are provided with a suitable can protection coating of a similar type to those used in the production of conventional formboards made of plywood.
Som overflatebelegg velges hensiktsmessig en fenolharpiksfolie av kjent slag, hvilken enten påføres direkte i for-bindelse med platelaminatets sammenføyning under varme og trykk eller i en separat pressoperasjon, på det i henhold til ovenstående fremstilte platelaminat. Det er her å merke at ulike overflatestrukturer lett kan oppnås i formplaten ved at ytterskiktets fiberplaten enten anbringes med viresiden vendt innover, hvorved dens glatte utside gir et meget jevnt og glatt underlag for overflatefolien, eller med viresiden vendende utad, hvilket gir en noe strukturert, men fortsatt jevn støpoverflate. As a surface coating, a phenolic resin foil of a known type is suitably chosen, which is either applied directly in connection with the joining of the plate laminate under heat and pressure or in a separate pressing operation, on the plate laminate produced in accordance with the above. It should be noted here that different surface structures can easily be achieved in the form plate by placing the outer layer's fiber board either with the wire side facing inwards, whereby its smooth outside provides a very even and smooth surface for the surface foil, or with the wire side facing outwards, which gives a somewhat structured, but still smooth casting surface.
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8405028A SE445568B (en) | 1984-10-08 | 1984-10-08 | DISC MATERIALS, PREFERRED FOR USE AS A CASTING FORM, BUILT OUT OF COMPOSITE LAMINATE WITH THE GLASS FIBER CORD IN THE OUTER LAYER |
Publications (2)
Publication Number | Publication Date |
---|---|
NO862275L true NO862275L (en) | 1986-06-06 |
NO862275D0 NO862275D0 (en) | 1986-06-06 |
Family
ID=20357273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO862275A NO862275D0 (en) | 1984-10-08 | 1986-06-06 | CASTING FORM AND PROCEDURE FOR MANUFACTURING THIS. |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0229069A1 (en) |
DK (1) | DK263286D0 (en) |
FI (1) | FI871520A0 (en) |
NO (1) | NO862275D0 (en) |
SE (1) | SE445568B (en) |
WO (1) | WO1986002122A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3038488B2 (en) * | 1990-06-19 | 2000-05-08 | 株式会社住建産業 | Method of manufacturing coniferous wood |
US6050047A (en) * | 1996-04-12 | 2000-04-18 | Borden Chemical, Inc. | Reinforced composite wooden structural member and associated method |
ITRM20120563A1 (en) * | 2012-11-15 | 2014-05-16 | Luigi Granato | METHOD OF CONSTRUCTION OF THE REINFORCED TRUCIOLAR AND ELEMENTS IN THE MAKEUP REINFORCED SO AS IT HAS OBTAINED |
SI24324A (en) * | 2013-03-19 | 2014-09-30 | Intech-Les, Razvojni Center, D.O.O. | Wooden panelling boards with improve surface protection and process of its manufacturing |
AU2015101929A4 (en) * | 2014-08-04 | 2019-05-16 | Obschestvo S Ogranichennoy Otvetstvennostyu Sveza-Les | Laminated shuttering plywood |
NO345746B1 (en) * | 2019-12-11 | 2021-07-12 | Fss Tre As | A self-extinguishing cross laminated timber (CLT) element |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2992152A (en) * | 1959-09-25 | 1961-07-11 | Chapman Ralph | Method of forming a board product |
DE1194571B (en) * | 1959-11-16 | 1965-06-10 | Peter Voelskow | Concrete formwork or building panels made of wood chips or the like and methods for their treatment |
NO115496B (en) * | 1963-07-02 | Owens-Corning Fiberglas Corp | ||
DE1653161A1 (en) * | 1966-05-21 | 1971-01-21 | Friedrich Bilger | Reinforcement of wood pulp boards as well as pressed boards and molded parts with wood components |
DE1952920A1 (en) * | 1968-10-22 | 1970-05-06 | Werner Zahlmann | Process for the production of panels, boards or the like. based on wood |
FR2058535A5 (en) * | 1969-09-03 | 1971-05-28 | Geisert Hans | Plastic faced sandwich shuttering panel |
DE2017690A1 (en) * | 1970-04-14 | 1971-11-04 | Deutsche Texaco Ag, 2000 Hamburg | Wood and fibre glass pressboard prodn |
CH524034A (en) * | 1971-04-15 | 1972-06-15 | Csenyi Zoltan | Reinforced wooden panel for concrete cladding in fournier construction |
DE2344218A1 (en) * | 1972-09-04 | 1974-03-21 | Bruynzeel Fineerfabriek Bv | METHOD OF MANUFACTURING FORMWORK PANELS FOR CONCRETE FORMWORK OR THE SAME AND FORMWORK PANEL IN ACCORDANCE WITH THIS PROCESS |
DE2357516A1 (en) * | 1973-11-17 | 1975-05-28 | Roland Hauser | Formwork panel and process for the production of an formwork panel for concrete formwork |
DE2448319A1 (en) * | 1974-10-10 | 1976-04-22 | Novopan Gmbh | Bitumen to replace part of binder in boards made of wood chips - esp. as inner laminae of multi-layered construction |
EP0048582A1 (en) * | 1980-09-20 | 1982-03-31 | Torvale Holdings Limited | Composite building slab and method and apparatus for making slabs |
SE8008552L (en) * | 1980-12-05 | 1982-06-06 | Lars Hammarberg | ARMED REMOTE DISC ALSO SET FOR ITS MAKE |
-
1984
- 1984-10-08 SE SE8405028A patent/SE445568B/en not_active IP Right Cessation
-
1985
- 1985-10-08 WO PCT/SE1985/000387 patent/WO1986002122A1/en not_active Application Discontinuation
- 1985-10-08 EP EP85905133A patent/EP0229069A1/en not_active Withdrawn
-
1986
- 1986-06-04 DK DK263286A patent/DK263286D0/en not_active Application Discontinuation
- 1986-06-06 NO NO862275A patent/NO862275D0/en unknown
-
1987
- 1987-04-07 FI FI871520A patent/FI871520A0/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
WO1986002122A1 (en) | 1986-04-10 |
SE8405028L (en) | 1986-04-09 |
SE445568B (en) | 1986-06-30 |
DK263286A (en) | 1986-06-04 |
FI871520A (en) | 1987-04-07 |
SE8405028D0 (en) | 1984-10-08 |
NO862275D0 (en) | 1986-06-06 |
EP0229069A1 (en) | 1987-07-22 |
FI871520A0 (en) | 1987-04-07 |
DK263286D0 (en) | 1986-06-04 |
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