NO743597L - - Google Patents
Info
- Publication number
- NO743597L NO743597L NO743597A NO743597A NO743597L NO 743597 L NO743597 L NO 743597L NO 743597 A NO743597 A NO 743597A NO 743597 A NO743597 A NO 743597A NO 743597 L NO743597 L NO 743597L
- Authority
- NO
- Norway
- Prior art keywords
- phenol
- formaldehyde
- accordance
- solution
- added
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 14
- 229920001732 Lignosulfonate Polymers 0.000 claims description 12
- 229920001568 phenolic resin Polymers 0.000 claims description 12
- 239000011093 chipboard Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 claims description 5
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 4
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 229920002866 paraformaldehyde Polymers 0.000 claims description 4
- 239000004117 Lignosulphonate Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000008098 formaldehyde solution Substances 0.000 claims description 3
- 235000019357 lignosulphonate Nutrition 0.000 claims description 3
- 150000001299 aldehydes Chemical class 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000011094 fiberboard Substances 0.000 claims description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920003987 resole Polymers 0.000 claims 1
- 239000011230 binding agent Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000002023 wood Substances 0.000 description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- 235000018185 Betula X alpestris Nutrition 0.000 description 2
- 235000018212 Betula X uliginosa Nutrition 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229920005552 sodium lignosulfonate Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- DGXAGETVRDOQFP-UHFFFAOYSA-N 2,6-dihydroxybenzaldehyde Chemical compound OC1=CC=CC(O)=C1C=O DGXAGETVRDOQFP-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Paper (AREA)
Description
Fremgangsmåte til fremstilling av banemateriale, såsom sponplater og fiberplater. Method for the production of track material, such as chipboard and fiberboard.
Ved fremstilling av sponplater og tilsvarende produkter er den vanlige fremgangsmåte å tørke sponen til et forholdsmessig høyt tørrstoffinnhold hvoretter et bindemiddel tilsettes i form av en løsning på hensiktsmessig måte. Bindemidlet som vanligvis anvendes består av urea-formaldehyd, f enol-formaldehyd, mel amin-f orrnalde-hyd eller andre kondensasjonsprodukter, såsom bindemidler basert på polyuretan, resorcin-formaldehyd og dicyandiamid-formaldehyd. Sulfittavlut og lignosulfonater som oppnås i store mengder i forbindelse med fremstilling av sulfittcellulosemasse er også blitt anvendt som bindemidler ved fremstillingen av sponplater. In the production of chipboard and similar products, the usual method is to dry the chips to a relatively high dry matter content, after which a binder is added in the form of a solution in an appropriate manner. The binder that is usually used consists of urea-formaldehyde, phenol-formaldehyde, melamine-f orrnalde-hyde or other condensation products, such as binders based on polyurethane, resorcinol-formaldehyde and dicyandiamide-formaldehyde. Sulphite leachates and lignosulphonates, which are obtained in large quantities in connection with the production of sulphite cellulose pulp, have also been used as binders in the production of chipboard.
Ifølge en tidligere iakttakelse frembringer lignosulfonater med visse karakteristiske egenskaper, kombinert med fenol-formal-dehydharpikser, et utmerket bindemiddel for for eksempel fremstilling av sponplater. Det er ifølge denne fremgangsmåte mulig å fremstille værbestandige sponplater ved å lime trespon ved hjelp av en løsning som inneholder slike lignosulfonater og fenol-formaldehydharpiks etc., og ved hjelp av etterfølgende pressing på According to a previous observation, lignosulfonates with certain characteristic properties, combined with phenol-formaldehyde resins, produce an excellent binder for, for example, the production of chipboard. According to this method, it is possible to produce weather-resistant chipboards by gluing wood chips using a solution containing such lignosulfonates and phenol-formaldehyde resin etc., and by means of subsequent pressing on
en måte som er kjent på området. En betydelig ulempe ved en slik in a manner known in the art. A significant disadvantage of such
fremgangsmåte er det forholdsvis høye fuktighetsinnhold i sponen, noe som skyldes limen som må påføres på tresponen i form av en vandig løsning. Avhengig av limløsningens viskositet må løsningen ofte anvendes så tynnet at fuktighetsinnholdet i sponen vil stige til over 12,%. I slike tilfeller forringes de fremstilte platers egenskaper betydelig, og i de verste tilfeller kan platene deles under pressingen'på grunn av -dampdannelse. method is the relatively high moisture content in the wood shavings, which is due to the glue that must be applied to the wood shavings in the form of an aqueous solution. Depending on the viscosity of the adhesive solution, the solution must often be used so thinly that the moisture content in the chips will rise to over 12.%. In such cases, the properties of the manufactured sheets deteriorate significantly, and in the worst cases, the sheets may split during pressing due to vapor formation.
Formålet med den foreliggende oppfinnelse er å eliminere de The purpose of the present invention is to eliminate them
nevnte ulemper.mentioned disadvantages.
Oppfinnelsen kjennetegnes ved at det til materialet som banematerialet. skal fremstilles av, såsom spon, fibre og liknende, tilsettes en fenol-formaldehydløsning og lignosulfonater i pulverform samt eventuelt i og for seg kjente tilsetningsmidler, hvoretter det således behandlete materiale tildannes til banemateriale på i og for seg kjent måte. The invention is characterized by the fact that the material as the track material. is to be produced from, such as shavings, fibers and the like, a phenol-formaldehyde solution and lignosulfonates in powder form are added, as well as any per se known additives, after which the thus treated material is formed into road material in a per se known manner.
Den foreliggende oppfinnelse har den fordel at limingen kan utføres på en måte som tillater at fuktighetsinnholdet i banematerialet varierer innenfor vide grenser. For eksempel er det ofte funnet fordelaktig i praksis å holde fuktighetsinnholdet i den limete spon i området 5 til 12%. Det er derved mulig å fremstille værbestandige sponplater med utmerkete styrkeegenskaper. The present invention has the advantage that the gluing can be carried out in a way that allows the moisture content of the track material to vary within wide limits. For example, it is often found advantageous in practice to keep the moisture content of the glued chip in the range of 5 to 12%. It is thereby possible to produce weather-resistant chipboards with excellent strength properties.
På grunn av det lave fuktighetsinnhold har platene ingen ten-dens til å deles under pressingen, og tørkekostnadene minskes sam-tidig. Due to the low moisture content, the plates have no tendency to split during pressing, and drying costs are reduced at the same time.
Idet lignosulfonatpulveret har en faktisk ubegrenset lag-ringstid, og fenol-formaldehydharpiksen bare anvendes i liten måle-stokk, er den foreliggende oppfinnelse fordelaktig når det gjelder limens holdbarhet, et forhold som har stor praktisk betydning. As the lignosulfonate powder has an actual unlimited storage time, and the phenol-formaldehyde resin is only used on a small scale, the present invention is advantageous in terms of the glue's durability, a matter of great practical importance.
Ifølge den foreliggende oppfinnelse tilsettes det til det tørkete banemateriale fenol-formaldehydharpiks av resoltype i en mengde av 2-8$ av tørrstoffinnholdet, i form av en vandig løsning, og lignosulfonatpulver i en mengde av 2- 10% av tørrstoffinnholdet. According to the present invention, resol-type phenol-formaldehyde resin is added to the dried pavement material in an amount of 2-8% of the dry matter content, in the form of an aqueous solution, and lignosulfonate powder in an amount of 2-10% of the dry matter content.
Ved fremstillingen av værbestandige sponplater er det fordelaktig å anvende lignosulfonater som har en gitt molekylvekts-fordeling. Slike lignosulfonater frembringes for eksempel ved frak-sjonering av sulfittavlut på kjent måte. Por å oppnå en værbestandig kvalitet er det funnet fordelaktig å anvende lignosulfonater hvor ikkermindre enn 55% har en molekylvekt på over 5.000. In the production of weather-resistant chipboards, it is advantageous to use lignosulfonates which have a given molecular weight distribution. Such lignosulphonates are produced, for example, by fractionation of sulphite leachate in a known manner. In order to achieve a weather-resistant quality, it has been found advantageous to use lignosulfonates where no less than 55% have a molecular weight of over 5,000.
For å bedre banens egenskaper ytterligere kan det dessuten tilsettes.aldehyder, såsom formaldehyd, paraformaldehyd eller furfural, og andre tilsetningsmidler såsom paraffin. In order to further improve the web's properties, aldehydes, such as formaldehyde, paraformaldehyde or furfural, and other additives such as paraffin can also be added.
Det etterfølgende eksempel illustrerer den foreliggende opp- . finnelse, men uten på noen måte å begrense denne. The following example illustrates the present up- . invention, but without in any way limiting this.
EksempelExample
Fremstilling av sponplater.Production of chipboards.
4.000 g trespon fra overflaten av bjørk, tykkelse 0,1-0,2 mm, bredde 2-5 mm, lengde 10-20 mm, ble tørket til et fuktighetsinnhold på 2%. Sponene ble sprøytet med 470 g av en fenol-formaldehydløs-ning som hadde 40% tørrstoffinnhold og viskositet på 70 cP ved 25°C, målt med et Brookfield TX RVT-viskosimeter, og som tilsetningsmidler 11 g paraformaldehyd og 65 g parafflnemulsjon ( 60% tørrstoff) blandet med fenol-formaldehydharpiksløsningen. 4,000 g of wood shavings from the surface of birch, thickness 0.1-0.2 mm, width 2-5 mm, length 10-20 mm, were dried to a moisture content of 2%. The chips were sprayed with 470 g of a phenol-formaldehyde solution which had a 40% solids content and a viscosity of 70 cP at 25°C, measured with a Brookfield TX RVT viscometer, and as additives 11 g of paraformaldehyde and 65 g of paraffin emulsion (60% solids) mixed with the phenol-formaldehyde resin solution.
282 g natriumlignosulfonat i pulverform, hvorav 72$ hadde en molekylvekt på over 5-000, ble tilsatt til sponen slik at det ble findelt i disse. Fuktighetsinnholdet i den limte spon var 9, 3%. 282 g of sodium lignosulfonate in powder form, of which 72% had a molecular weight of over 5,000, was added to the chips so that it was finely divided into them. The moisture content of the glued chips was 9.3%.
6.000 g bjørkespon fra midt i treet, tykkelse 0,2-0,4 mm, bredde 5-15 mm, lengde 15"30 mm, som var tørket til et fuktighetsinnhold på 2%, ble-sprøytet med 588 g fenol-formaldehydharpiksløs-ning og med 15 g paraformaldehyd samt 98 g paraffinemulsjon med 60% 6,000 g birch shavings from the middle of the tree, thickness 0.2-0.4 mm, width 5-15 mm, length 15-30 mm, which had been dried to a moisture content of 2%, were sprayed with 588 g phenol-formaldehyde resin-free ning and with 15 g paraformaldehyde and 98 g paraffin emulsion with 60%
tørrstoff, som var tilsatt til fenol-formaldehydharpiksløsningen. 353 g natriumlignosulfonatpulver ble blandet homogent med sponen. dry matter, which was added to the phenol-formaldehyde resin solution. 353 g of sodium lignosulphonate powder was mixed homogeneously with the chips.
Deretter var fuktighetsinnholdet i den limte spon 9,3%-Subsequently, the moisture content of the glued chips was 9.3%-
Sponen ble bearbeidet til trelags plater med sp. v. på 750 kg/rrr og 15 mm nominell tykkelse. Presstiden var ett minutt pr. rnm og maksimalt trykk 27 kp/cm<2>. Presstemperaturen var 215°C. The chips were processed into three-layer boards with sp. v. of 750 kg/rrr and 15 mm nominal thickness. The pressing time was one minute per rnm and maximum pressure 27 kp/cm<2>. The pressing temperature was 215°C.
Sponplatenes styrkeegenskaper ble bestemt ifølge finsk standard 0.IV.2, og strekkfastheten etter vanninnsuging i 2 timer ved 100°C (V 100) ifølge tysk standard DIN 63-761. The chipboard's strength properties were determined according to Finnish standard 0.IV.2, and the tensile strength after water absorption for 2 hours at 100°C (V 100) according to German standard DIN 63-761.
De oppnådde resultater er vist i tabell 1.The results obtained are shown in table 1.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI3117/73A FI311773A (en) | 1973-10-08 | 1973-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO743597L true NO743597L (en) | 1975-05-05 |
Family
ID=8508018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO743597A NO743597L (en) | 1973-10-08 | 1974-10-04 |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS50123785A (en) |
AT (1) | AT334101B (en) |
DD (1) | DD114549A5 (en) |
DE (1) | DE2447590A1 (en) |
FI (1) | FI311773A (en) |
FR (1) | FR2246383B1 (en) |
GB (1) | GB1468466A (en) |
NO (1) | NO743597L (en) |
SE (1) | SE7412604L (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI58788C (en) * | 1977-10-18 | 1981-04-10 | Metsaeliiton Teollisuus Oy | BINDEMEDEL BESTAOENDE AV ENLIGT MOLEKYLVIKTEN FRAKTIONERADE LIGNINDERIVATER OCH FOERFARANDE FOER FRAMSTAELLNING AV DETSAMMA |
AT357334B (en) * | 1978-10-13 | 1980-07-10 | Oesterr Hiag Werke Ag | METHOD FOR PRODUCING WOOD CHIPBOARDS |
CA1138589A (en) * | 1979-04-20 | 1982-12-28 | Krishan K. Sudan | Lignosulphonate phenolic resin binder |
FI83348C (en) * | 1987-03-09 | 1996-01-09 | Metsae Serla Oy | Process for making products from lignocellulosic material |
JP2718167B2 (en) * | 1989-04-11 | 1998-02-25 | 大日本インキ化学工業株式会社 | Dry manufacturing method of fiberboard |
-
1973
- 1973-10-08 FI FI3117/73A patent/FI311773A/fi unknown
-
1974
- 1974-10-04 NO NO743597A patent/NO743597L/no unknown
- 1974-10-05 DE DE19742447590 patent/DE2447590A1/en active Pending
- 1974-10-07 SE SE7412604A patent/SE7412604L/xx unknown
- 1974-10-08 AT AT805974A patent/AT334101B/en not_active IP Right Cessation
- 1974-10-08 JP JP49115256A patent/JPS50123785A/ja active Pending
- 1974-10-08 GB GB4347874A patent/GB1468466A/en not_active Expired
- 1974-10-08 DD DD181565A patent/DD114549A5/xx unknown
- 1974-10-08 FR FR7433841A patent/FR2246383B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2246383B1 (en) | 1976-10-22 |
AT334101B (en) | 1976-12-27 |
FR2246383A1 (en) | 1975-05-02 |
FI311773A (en) | 1975-04-09 |
DE2447590A1 (en) | 1975-04-24 |
ATA805974A (en) | 1976-04-15 |
SE7412604L (en) | 1975-04-09 |
DD114549A5 (en) | 1975-08-12 |
JPS50123785A (en) | 1975-09-29 |
GB1468466A (en) | 1977-03-30 |
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