NO313372B1 - Method of manufacturing relief patterned disc shaped products - Google Patents
Method of manufacturing relief patterned disc shaped products Download PDFInfo
- Publication number
- NO313372B1 NO313372B1 NO19983597A NO983597A NO313372B1 NO 313372 B1 NO313372 B1 NO 313372B1 NO 19983597 A NO19983597 A NO 19983597A NO 983597 A NO983597 A NO 983597A NO 313372 B1 NO313372 B1 NO 313372B1
- Authority
- NO
- Norway
- Prior art keywords
- disc
- patterned
- product
- shaped products
- relief
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 claims description 20
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 9
- 229920001169 thermoplastic Polymers 0.000 claims description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims description 8
- 239000002657 fibrous material Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229920002522 Wood fibre Polymers 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 239000002025 wood fiber Substances 0.000 claims description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 2
- 229920006228 ethylene acrylate copolymer Polymers 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 2
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- -1 sawdust Substances 0.000 claims description 2
- 239000011093 chipboard Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 230000007704 transition 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/20—Moulding or pressing characterised by using platen-presses
- B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
-
- 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
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)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
Foreliggende oppfinnelse vedrører fremstilling av relieffmønstrede skiveformede produkter. Eksempler på slike skiveformede produkter er dører, skapdører, mønstrede trepaneler osv. Produktene er fremstilt av materialer som har termoplastiske egenskaper, fortrinnsvis materialer som inneholder trefiberbasert materiale. The present invention relates to the production of relief-patterned disc-shaped products. Examples of such disc-shaped products are doors, cabinet doors, patterned wooden panels, etc. The products are made from materials that have thermoplastic properties, preferably materials that contain wood fiber-based material.
Det er stor etterspørsel etter relieffmønstrede skiveformede produkter, så som dører til kjøkkenskap, mønstrede paneler, dører, osv. Slike produkter er typisk fremstilt av en treplate, hvori mønsteret er utskåret. Alternativt kan for-formede treemner eller pre-former også festes på overflaten av skiven. Det er også kjent å kombinere disse to teknikkene. There is a great demand for relief-patterned disc-shaped products, such as kitchen cabinet doors, patterned panels, doors, etc. Such products are typically made from a wooden plate, into which the pattern is carved. Alternatively, pre-shaped wooden blanks or pre-forms can also be attached to the surface of the disc. It is also known to combine these two techniques.
Arbeidet forbundet med å tilveiebringe fiberlignende produkter med et relieffmønster, som i stor grad gjøres manuelt, er kostbart, tidskrevende og krever en høy grad av ekspertise. Det er derfor behov for mindre kompliserte og rimeligere metoder for fremstilling av relieffmønstrede skivelignende produkter. The work involved in providing fiber-like products with a relief pattern, which is largely done manually, is expensive, time-consuming and requires a high degree of expertise. There is therefore a need for less complicated and less expensive methods for producing relief-patterned disc-like products.
Ved kompresjonspressing av f.eks. sponplater i en form med bratte overganger mellom opphevede og nedsenkede partier, oppnås det et dårlig resultat fordi man lett får sprekker i platen. I visse tilfeller kan platen knekkes. By compression pressing of e.g. chipboards in a form with steep transitions between raised and sunken parts, a poor result is achieved because cracks are easily formed in the board. In certain cases, the disc may break.
WO 82/03595 beskriver et apparat og en fremgangsmåte for fremstilling av mønstrede trefiberplater som hovedsakelig er ment for bruk som lydisolerende veggkledning. I henhold til denne fremgangsmåten blir en våt trefibermasse fremstilt ved hjelp av en mønstervalse og deretter tørket. Ved utøvelse av denne kjente metoden blir platen mønstret i fremstillingstrinnet. Det er derfor nødvendig å gjøre store investeringer og anvende en komplisert prosess, når man ønsker å anvende denne teknikken. WO 82/03595 describes an apparatus and a method for the production of patterned wood fiber boards which are mainly intended for use as soundproof wall covering. According to this method, a wet wood fiber mass is produced by means of a pattern roller and then dried. By practicing this known method, the plate is patterned in the production step. It is therefore necessary to make large investments and use a complicated process, when you want to use this technique.
EP 0 489 994 beskriver en dør som er tilveiebrakt med ett eller flere sjikt av relieff-mønstret termoplastisk materiale. I dette tilfellet har man ikke forsøkt å forme selve treet, men anvender en for-formet skive av et annet materiale. Forskjellige områder av overflaten fremstilles av forskjellige materialer ved denne teknikken. Videre er denne teknikken ikke anvendelig for fremstilling av skivelignende produkter som er mønstret med nedsenkede overflater. EP 0 489 994 describes a door which is provided with one or more layers of relief-patterned thermoplastic material. In this case, no attempt has been made to shape the wood itself, but a pre-shaped disc of another material is used. Different areas of the surface are made of different materials by this technique. Furthermore, this technique is not applicable to the production of disc-like products which are patterned with sunken surfaces.
EP 0 574 953 beskriver en fremgangsmåte for fremstilling av relieffmønstrede trekom-posittskiver, hvor skivene samtidig kan utformes med forskjellige mønstre. Presse-tiden er relativt lang (ca. 5 minutter), noe som resulterer i relativt høye fremstillings-kostnader. Videre har de mønstrede skivene en relativt liten overflatestørrelse (20 x 20 tommer). EP 0 574 953 describes a method for producing relief-patterned wooden composite discs, where the discs can be designed with different patterns at the same time. The pressing time is relatively long (approx. 5 minutes), which results in relatively high production costs. Furthermore, the patterned discs have a relatively small surface size (20 x 20 inches).
Det er derfor behov for alternative fremgangsmåter for fremstilling av relieffmønstrede skivelignende produkter, hvor de tidligere nevnte problemene er løst og som gjør det mulig å presse skiver med et overflateareal på minst 1,5 - 2 m2. There is therefore a need for alternative methods for the production of relief-patterned disc-like products, where the previously mentioned problems are solved and which make it possible to press discs with a surface area of at least 1.5 - 2 m2.
Det er nå funnet at et relieffmønstret skivelignende produkt kan fremstilles med god kvalitet raskt og uten besvær ved kompresjonspressing av en skivelignende pre-form, som innbefatter en blanding av fibrøst materiale og termoplastisk lim, i en presse av trykk-celletypen. It has now been found that a relief-patterned disc-like product can be produced with good quality quickly and without difficulty by compression pressing a disc-like preform, which includes a mixture of fibrous material and thermoplastic adhesive, in a press of the pressure cell type.
Oppfinnelsen vil nå bli beskrevet mer detaljert med henvisning til de medfølgende tegninger. Figur 1 viser et eksempel på et platemønster som kan fremstilles ved fremgangsmåten ifølge oppfinnelsen. The invention will now be described in more detail with reference to the accompanying drawings. Figure 1 shows an example of a plate pattern that can be produced by the method according to the invention.
Figur 2 viser et tverrsnitt av den mønstrede platen vist i figur 1. Figure 2 shows a cross-section of the patterned plate shown in Figure 1.
Ved å anvende en presse av trykkcelle-typen er det mulig å oppnå effekter som ikke kan oppnås med en konvensjonell presse av stempeltypen. I en trykkcelle-presse overføres trykket med en elastisk membran. Emnet blir derved presset i mange retninger samtidig, noe som gjør det mulig å forme emnet raskt og enkelt i henhold til formen til et underliggende formverktøy. Dette gjør det mulig å tilveiebringe det kom-presjonspressede produktet med meget kompliserte mønstre. Passende emner kan også presses ved meget høyt trykk, ca. 800 bar og fortrinnsvis over 1000 bar, og derved oppnås meget korte pressetider, f.eks. pressetider under 2 minutter, fortrinnsvis under 1 minutt. By using a press of the pressure cell type, it is possible to achieve effects that cannot be achieved with a conventional press of the piston type. In a pressure cell press, the pressure is transferred with an elastic membrane. The workpiece is thereby pressed in many directions at the same time, which makes it possible to shape the workpiece quickly and easily according to the shape of an underlying molding tool. This makes it possible to provide the compression pressed product with very complicated patterns. Suitable items can also be pressed at very high pressure, approx. 800 bar and preferably over 1000 bar, thereby achieving very short pressing times, e.g. pressing times under 2 minutes, preferably under 1 minute.
SE-C-452 436 beskriver et presseanlegg av trykkcelle-typen som er godt tilpasset for bruk i forbindelse med fremgangsmåten for fremstilling av relieffmønstrede skivelignende produkter i henhold til foreliggende oppfinnelse. Denne pressen er utformet for fremstilling av besværlig formede platemetallelementer. Et hardt formingsverktøy er anbrakt i bunnen av et trau og emnet eller pre-formen som skal presses, anbringes på toppen av verktøyet. Trauet skyves inn i pressen og emnet presses deretter mot formingsverktøyet ved hjelp av en elastisk membran, f.eks. en hydraulisk operert membran. SE-C-452 436 describes a press plant of the pressure cell type which is well suited for use in connection with the method for producing relief-patterned disc-like products according to the present invention. This press is designed for the production of intricately shaped sheet metal elements. A hard forming tool is placed in the bottom of a trough and the blank or preform to be pressed is placed on top of the tool. The trough is pushed into the press and the blank is then pressed against the forming tool by means of an elastic membrane, e.g. a hydraulically operated diaphragm.
Dersom en skive av fibrøst materiale, f.eks. sponplate, som ikke inneholder termoplastisk lim, blir kompresjonspresset ved høyt trykk ved hjelp av en trykkcelle-presse og et hardt formverktøy, vil skiven bøyes eller knekkes. Siden termoplastisk lim er et kaldtflytende lim, opptrer ikke disse problemene så lett ved kompresjonspressing av en skive av fibrøst materiale som inneholder et slikt lim. Disse egenskapene til en slik skive kan også forbedres ved oppvarming av skiven. En fagmann innen området vil være i stand til å bestemme passende presstemperaturer for forskjellige limtyper ved hjelp av enkle forsøk. If a slice of fibrous material, e.g. chipboard, which does not contain thermoplastic adhesive, is compression pressed at high pressure using a pressure cell press and a hard forming tool, the disc will bend or break. Since thermoplastic adhesive is a cold-flow adhesive, these problems do not occur as readily when compression molding a sheet of fibrous material containing such an adhesive. These properties of such a disc can also be improved by heating the disc. One skilled in the art will be able to determine appropriate pressing temperatures for different types of adhesives using simple experiments.
I henhold til oppfinnelsen kan formbarheten til den fibrøse skiven forbedres ytterligere ved oppvarming av skiven til en temperatur på 40 - 70°C fortrinnsvis til 45 - 60°C før pressingen. Skiven kan passende oppvarmes i en mikrobølgeovn. According to the invention, the formability of the fibrous disk can be further improved by heating the disk to a temperature of 40 - 70°C, preferably to 45 - 60°C, before pressing. The disc can be suitably heated in a microwave oven.
Det fibrøse materialet er fortrinnsvis et trefiberbasert materiale, så som sagspon, treflis eller trepulver, osv. Passende termoplastiske lim er polymerlim f.eks. EVA (etylen-vinylacetatkopolymer), etylenakrylatkopolymer og PV AC (polyvinylacetat) og andre olefinlim, etc. Den tidligere nevnte skiven eller platen inneholdende fibrøst materiale og termoplastisk lim fremstilles ved fremgangsmåter som er kjent ved fremstilling av sponplater, boardskiver, etc. The fibrous material is preferably a wood fiber-based material, such as sawdust, wood chips or wood powder, etc. Suitable thermoplastic adhesives are polymer adhesives, e.g. EVA (ethylene-vinyl acetate copolymer), ethylene acrylate copolymer and PV AC (polyvinyl acetate) and other olefin adhesives, etc. The previously mentioned disc or plate containing fibrous material and thermoplastic adhesive is produced by methods known in the production of chipboards, board discs, etc.
Oppfinnelsen vil nå bli beskrevet med henvisning til det etterfølgende eksempelet. Eksempelet er kun gitt som illustrasjon og er ikke ment å begrense oppfinnelsens beskyttelsesomfang. The invention will now be described with reference to the following example. The example is given as an illustration only and is not intended to limit the scope of protection of the invention.
Eksempel Example
En sponplate hvis limkomponent besto av termoplastisk polymer EVA ble først oppvarmet til en temperatur på 60°C i en mikrobølgeovn og deretter presset i en trykk-cellepresse fra ABB, Våsterås, Sverige. Sponplaten ble presset på et formeverktøy ved ønsket mønster. Verktøyet var oppvarmet til 80°C og platen ble deretter presset i 1 minutt ved et trykk på 1000 bar. Det ble fremstilt en sponplate med et tydelig relieff-mønster. A chipboard whose adhesive component consisted of the thermoplastic polymer EVA was first heated to a temperature of 60°C in a microwave oven and then pressed in a pressure cell press from ABB, Våsterås, Sweden. The chipboard was pressed onto a molding tool in the desired pattern. The tool was heated to 80°C and the plate was then pressed for 1 minute at a pressure of 1000 bar. A chipboard with a clear relief pattern was produced.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9600505A SE506046C2 (en) | 1996-02-12 | 1996-02-12 | Process for making relief patterned disc-shaped articles |
PCT/SE1997/000137 WO1997028937A1 (en) | 1996-02-12 | 1997-01-29 | A method of manufacturing relief patterned sheet-like products |
Publications (3)
Publication Number | Publication Date |
---|---|
NO983597D0 NO983597D0 (en) | 1998-08-05 |
NO983597L NO983597L (en) | 1998-10-06 |
NO313372B1 true NO313372B1 (en) | 2002-09-23 |
Family
ID=20401357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO19983597A NO313372B1 (en) | 1996-02-12 | 1998-08-05 | Method of manufacturing relief patterned disc shaped products |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0880431A1 (en) |
JP (1) | JP2000505369A (en) |
AU (1) | AU709162B2 (en) |
BR (1) | BR9707415A (en) |
CA (1) | CA2245946A1 (en) |
NO (1) | NO313372B1 (en) |
RU (1) | RU2190521C2 (en) |
SE (1) | SE506046C2 (en) |
WO (1) | WO1997028937A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20005186U1 (en) | 2000-03-21 | 2000-06-29 | Vießmann, Hans, Dr. Dr., 95030 Hof | Chipboard |
WO2010045742A1 (en) | 2008-10-21 | 2010-04-29 | Uniboard Canada Inc. | Embossed monolayer particleboards and methods of preparation thereof |
EP3020524B1 (en) | 2014-11-13 | 2018-10-31 | SWISS KRONO Tec AG | Method for producing wood composite panels, in particular OSB wood composite panels, and wooden panel which can be produced with this method |
TW202415843A (en) * | 2022-06-23 | 2024-04-16 | 瑞典商瑟拉羅克創新有限公司 | Process and arrangement for manufacturing a board element comprising cavities |
US20240140061A1 (en) * | 2022-10-28 | 2024-05-02 | Ceraloc Innovation Ab | Process and arrangement for manufacturing a board element comprising cavities |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE452436B (en) * | 1986-03-25 | 1987-11-30 | Asea Ab | PRESSURE PLANT WITH A PRESSURE CELL TYPE PRESSURE |
-
1996
- 1996-02-12 SE SE9600505A patent/SE506046C2/en not_active IP Right Cessation
-
1997
- 1997-01-29 JP JP9528443A patent/JP2000505369A/en active Pending
- 1997-01-29 RU RU98117068/04A patent/RU2190521C2/en not_active IP Right Cessation
- 1997-01-29 BR BR9707415-2A patent/BR9707415A/en not_active IP Right Cessation
- 1997-01-29 CA CA002245946A patent/CA2245946A1/en not_active Abandoned
- 1997-01-29 AU AU17398/97A patent/AU709162B2/en not_active Ceased
- 1997-01-29 WO PCT/SE1997/000137 patent/WO1997028937A1/en not_active Application Discontinuation
- 1997-01-29 EP EP97904693A patent/EP0880431A1/en not_active Withdrawn
-
1998
- 1998-08-05 NO NO19983597A patent/NO313372B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2000505369A (en) | 2000-05-09 |
EP0880431A1 (en) | 1998-12-02 |
AU1739897A (en) | 1997-08-28 |
BR9707415A (en) | 2000-01-04 |
NO983597L (en) | 1998-10-06 |
SE9600505D0 (en) | 1996-02-12 |
AU709162B2 (en) | 1999-08-26 |
SE506046C2 (en) | 1997-11-03 |
WO1997028937A1 (en) | 1997-08-14 |
NO983597D0 (en) | 1998-08-05 |
RU2190521C2 (en) | 2002-10-10 |
SE9600505L (en) | 1997-08-13 |
CA2245946A1 (en) | 1997-08-14 |
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