EP1817145A1 - Helle bis weisse holzwerkstoffplatten - Google Patents
Helle bis weisse holzwerkstoffplattenInfo
- Publication number
- EP1817145A1 EP1817145A1 EP05797299A EP05797299A EP1817145A1 EP 1817145 A1 EP1817145 A1 EP 1817145A1 EP 05797299 A EP05797299 A EP 05797299A EP 05797299 A EP05797299 A EP 05797299A EP 1817145 A1 EP1817145 A1 EP 1817145A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wood
- fibers
- white
- based panels
- mdf
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title abstract description 5
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 30
- 239000012463 white pigment Substances 0.000 claims abstract description 21
- 239000002025 wood fiber Substances 0.000 claims description 29
- 239000002023 wood Substances 0.000 claims description 28
- 239000000835 fiber Substances 0.000 claims description 17
- 239000006185 dispersion Substances 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 13
- 235000009414 Elaeocarpus kirtonii Nutrition 0.000 claims description 12
- 235000013584 Tabebuia pallida Nutrition 0.000 claims description 12
- 239000007844 bleaching agent Substances 0.000 claims description 4
- 239000011093 chipboard Substances 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 230000002829 reductive effect Effects 0.000 claims description 2
- 241000199223 Elaeocarpus kirtonii Species 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 16
- 239000003292 glue Substances 0.000 description 13
- 244000236151 Tabebuia pallida Species 0.000 description 10
- 239000000049 pigment Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 7
- 239000004408 titanium dioxide Substances 0.000 description 7
- 235000010215 titanium dioxide Nutrition 0.000 description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 241000294754 Macroptilium atropurpureum Species 0.000 description 6
- 238000004061 bleaching Methods 0.000 description 6
- -1 peracetates Chemical class 0.000 description 6
- 241000218657 Picea Species 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 241000771208 Buchanania arborescens Species 0.000 description 3
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 235000015165 citric acid Nutrition 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000004040 coloring Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 3
- 235000010262 sodium metabisulphite Nutrition 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 241001070947 Fagus Species 0.000 description 2
- 235000010099 Fagus sylvatica Nutrition 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000008139 complexing agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 235000011090 malic acid Nutrition 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000009896 oxidative bleaching Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 2
- 229940079827 sodium hydrogen sulfite Drugs 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- CSABAZBYIWDIDE-UHFFFAOYSA-N sulfino hydrogen sulfite Chemical class OS(=O)OS(O)=O CSABAZBYIWDIDE-UHFFFAOYSA-N 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical compound C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- YGUMVDWOQQJBGA-VAWYXSNFSA-N 5-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-[(e)-2-[4-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound C=1C=C(\C=C\C=2C(=CC(NC=3N=C(N=C(NC=4C=CC=CC=4)N=3)N3CCOCC3)=CC=2)S(O)(=O)=O)C(S(=O)(=O)O)=CC=1NC(N=C(N=1)N2CCOCC2)=NC=1NC1=CC=CC=C1 YGUMVDWOQQJBGA-VAWYXSNFSA-N 0.000 description 1
- 241001133760 Acoelorraphe Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N benzo-alpha-pyrone Natural products C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 1
- XJHABGPPCLHLLV-UHFFFAOYSA-N benzo[de]isoquinoline-1,3-dione Chemical class C1=CC(C(=O)NC2=O)=C3C2=CC=CC3=C1 XJHABGPPCLHLLV-UHFFFAOYSA-N 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 239000000038 blue colorant Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000001671 coumarin Nutrition 0.000 description 1
- 150000004775 coumarins Chemical class 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- HANVTCGOAROXMV-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine;urea Chemical compound O=C.NC(N)=O.NC1=NC(N)=NC(N)=N1 HANVTCGOAROXMV-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000004966 inorganic peroxy acids Chemical class 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- XONPDZSGENTBNJ-UHFFFAOYSA-N molecular hydrogen;sodium Chemical compound [Na].[H][H] XONPDZSGENTBNJ-UHFFFAOYSA-N 0.000 description 1
- 150000004967 organic peroxy acids Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000009895 reductive bleaching Methods 0.000 description 1
- 239000006254 rheological additive Substances 0.000 description 1
- SRRKNRDXURUMPP-UHFFFAOYSA-N sodium disulfide Chemical compound [Na+].[Na+].[S-][S-] SRRKNRDXURUMPP-UHFFFAOYSA-N 0.000 description 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
- 239000004289 sodium hydrogen sulphite Substances 0.000 description 1
- LDTLADDKFLAYJA-UHFFFAOYSA-L sodium metabisulphite Chemical compound [Na+].[Na+].[O-]S(=O)OS([O-])=O LDTLADDKFLAYJA-UHFFFAOYSA-L 0.000 description 1
- 229940045872 sodium percarbonate Drugs 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 150000001629 stilbenes Chemical class 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003455 sulfinic acids Chemical class 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229910001428 transition metal ion Inorganic materials 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 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
- B27N1/00—Pretreatment of moulding material
-
- 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
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
Definitions
- the present invention relates to light to white wood-based panels made of bleached wood fibers and / or mass colored with a white pigment.
- MDF panels medium-density fiberboards
- HDF panels high-density fibreboards
- MDF and HDF boards can be processed like conventional chipboard. Due to their uniform structure, they are also suitable for the production of profiled parts and are therefore becoming increasingly popular in furniture construction. Thus, for example, furnishings for rooms and for decorative purposes (for example in trade fair construction), but also higher-quality furniture made from these plates and closing to get the wood-like structure visible, only colorless coated or coated with overlay.
- MDF boards are produced at much higher temperatures (about 2OfJ 0 C) than paper, which in addition to the brown inherent color of wood fibers enters a process-related browning, which is due to the oxidation and thermal decomposition of wood ingredients.
- the light exposure of a MDF board incorporated in furniture is significantly longer and more intense than the usual papers and causes a not inconsiderable yellowing.
- the invention therefore an object of the invention to provide light or white wood-based panels available
- the wood-based panels according to the invention are distinguished by their brightness or their white color. Depending on the combination of measures taken, the desired whiteness can be easily adjusted. Especially white plates were ⁇ the e.g. by bleaching the wood fibers and mass-coloring with a dispersion of a white pigment which additionally contains optical brighteners. Bright plates with a lower degree of whiteness are also accessible merely by bleaching the wood fibers or by mass coloration with a white pigment.
- the wood-based panels according to the invention may be MDF or HDF boards or chipboards. Particularly preferred are MDF boards.
- MDF and HDF boards are usually produced in a continuous process.
- washed, water-moist, small chopped pieces of wood (Hack ⁇ schnitzel) are first preheated to about 80 0 C and then in a digester under a Pressure of 2 to 5 bar and a temperature of 100 to 150 ° C soaked. In the adjoining refiner, the chips are then shredded.
- the refiner consists of two metal discs with radial relief, which rotate close to each other in the opposite direction. The fibers leave the refiner via the so-called blowline.
- the glue is usually applied.
- Urea-formaldehyde resins some of which are reinforced with melamine, or urea-melamine-formaldehyde resins used for damp-resistant boards, are usually used as binders. Isocyanates are also used as binders. The binders are usually applied to the fibers together with the desired additives (eg hardener, paraffin dispersion, colorant). The glued fibers then pass through a dryer in which they are dried to humidities of 8 to 15 wt .-%. Occasionally, the dried fibers are also subsequently coated in special, continuously operating mixers.
- the desired additives eg hardener, paraffin dispersion, colorant
- the glued fibers or chips are then poured into mats, where appropriate cold precompressed and pressed in heated presses at temperatures of 170 to 24O 0 C to plates.
- Bleached wood fibers are differentiated in the production of one embodiment of the light wood-based panels according to the invention (hereinafter, the term “wood fibers” and “chips” are not differentiated; rather, the term “wood fibers” is also intended to include “chips”).
- the coloring impurities of the wood are destroyed or rendered ineffective by oxidizing and / or reducing chemicals.
- oxidative bleaching e.g. Hydrogen peroxide, ozone, oxygen and salts of organic and inorganic peracids, such as peracetates, percarbonates and perborates, especially their alkali metal salts, in particular sodium salts, the percarbonates and hydrogen peroxide being preferred.
- reductive lead there are e.g.
- reducing sulfur compounds such as dithionites, disulfites, sulfites or sulfur dioxide, sulfinic acids and their salts, in particular the alkali metal salts and especially the sodium salts, and hydroxycarboxylic acids, such as citric acid and ⁇ pfel ⁇ acid suitable.
- Preferred reducing agents are the disulfites and sulfites, in particular sodium hydrogen sulfite, and malic and citric acids.
- wood fibers which have been firstly oxidatively and then reductively bleached are particularly preferred.
- the oxidative bleaching is carried out with percarbonates or hydrogen peroxide and the reductive bleaching with sulfites, malic or citric acid.
- the process is in bleaching expediently so before that aqueous, 5 to 40 wt .-% strength wood fiber dispersions continuously men inellese- at temperatures from 90 to 150 0 C and pressures up to 3 solutions bar with aqueous Lö ⁇ or dispersions of the bleaching agent treated.
- aqueous, 5 to 40 wt .-% strength wood fiber dispersions continuously men inellese- at temperatures from 90 to 150 0 C and pressures up to 3 solutions bar with aqueous Lö ⁇ or dispersions of the bleaching agent treated.
- it is carried out in the presence of complexing agents, such as EDTA, to avoid the degradation of the bleaching agents by transition metal ions.
- the bleaching of the fibers is carried out in particular in the case of MDF / HDF boards during board production.
- the bleaching agents can be added to the wood chips in the preheater or in the cooker.
- complexing agents are also added.
- all fibrous materials to be obtained from plants can serve as the base material for the wood-based panels according to the invention.
- Preferred base materials are light wood species, especially spruce or pine, but darker wood species such as beech can also be used.
- the use of bleached wood fibers with a mass coloration is combined with a white pigment.
- the whiteness can be decisively improved.
- the mass coloration with the white pigment can also be carried out alone. In this case, bright plates are also obtained.
- the term "white pigment” includes both inorganic pigments which are preferred, such as titanium dioxide (rutile, CI Pigment White 6), calcium carbonate and calcium / magnesium mixed carbonates (eg dolomite), zinc oxide, zinc sulfide, lithopones and Sodium-aluminum silicates, as well as white-coloring, highly light-scattering plastic emulsions and dispersions.
- titanium dioxide rutile, CI Pigment White 6
- calcium carbonate and calcium / magnesium mixed carbonates eg dolomite
- zinc oxide zinc oxide
- zinc sulfide lithopones
- Sodium-aluminum silicates eg.g., Sodium-aluminum silicates
- white pigment is titanium dioxide.
- mixtures of white pigments can also be used.
- the white pigments are preferably used in the form of aqueous dispersions in which they are finely divided, since they can be introduced directly into the MDF / HDF production process via the blowline, separately from or together with the glue.
- These pigment dispersions may contain further customary auxiliaries, in particular wetting and dispersing agents, defoamers and biocides, but also antisettling agents, water retention agents and rheology modifiers and are preferably prepared by wet milling of all components, for example in a stirred ball mill.
- a further increase in the whiteness can be achieved by the addition of optical Aufhel ⁇ learning compensated by their bluish fluorescence (complementary color) Vergrau ⁇ ments and yellowing.
- Suitable are, in principle, all blue emitting fluorescent dyes, more commercially accessible products such as Ultraphor ® (BASF), Leucophor ® (Clariant) or Tinopal ® (Ciba), linked from the chemical substance classes of the stilbenes, distyrylbiphenyls, coumarins, naphthalimides and double bonds benzoxazole and benzimidazole systems.
- Ultraphor ® BASF
- Leucophor ® Clariant
- Tinopal ® Tinopal ®
- optical brighteners can be introduced in the form of aqueous dispersions or solutions separately or together with the white pigments and the glue in the MDF / HDF production process.
- the concentration in the finished wood-based panel is generally from 0.01 to 1% atro, preferably from 0.08 to 0.2% atro.
- any resulting from the inventive measures changes in the physical properties of the pressed wood-based panel can be controlled by selecting the glue quality and amount of glue.
- the brightness difference .DELTA.L was determined as a standard by coloristic measurement according to CIELAB in comparison to a MDF board produced analogously from unbleached wood fibers and without the addition of white pigments and optical brighteners.
- the wood pulp mash was separated from the liquid constituents via a sieve with a mesh size of 1 mm and briefly washed out with running water and blown through. The spread filter material was then dried at 60 0 C in a convection oven for 3 days.
- step b) The bleached wood fibers from step a) were mixed thoroughly in a paddle mixer and sprayed with the glue batch listed in Table 1.
- an MDF board of unbleached wood fibers was prepared, wherein the wood fibers were sprayed with the glue mixture containing the white pigment titanium dioxide listed in table 2.
- Wood chips from spruce were added during the MDF production process in the digester of an MDF pilot plant with a 40 wt .-% aqueous Natriumdisul- fit solution, corresponding to 7.5% sodium hydrogen sulfite atro fibers.
- the MDF The production process was continued as usual with a throughput of 21 kg / h, the wood chips were defibered by the refiner, and the resulting fibers were coated by the blowline continuously with the glue formulation listed in Table 4.
- the glued wood fibers were dried in the subsequent continuous Trock ⁇ ner to a residual moisture content of about 9 wt .-% and then poured discontinuously to a mat, cold precompressed and at 190 0 C with a pressing time factor of 15 s / mm to a 16 mm pressed thick plate.
- An MDF plate was prepared analogously to the procedure described in Example 3, but without addition of sodium disulfite.
- Table 5 shows the whiteness achieved (expressed in the difference in brightness ⁇ L), based on comparative example C2 as standard.
- Wood chips from spruce wood were sprayed in a mixer with a 40% strength by weight aqueous sodium disulphite solution, corresponding to 4.5% sodium hydrogen sulphite fibers. These chips were then fed into the digester of an MDF technology plant.
- the MDF production process was as usual with a Throughput of 21 kg / h continued, the wood chips were zerfa ⁇ sert by the refiner, and the sustaining fibers were by the blowline continuously with the glue listed in Table 6, the white pigment containing titanium dioxide glued glue ⁇ .
- the glued wood fibers were dried in the subsequent continuous drier to a residual moisture content of about 9 wt .-% and then poured discontinuously to a mat, cold precompressed and at 19O 0 C with a pressing time factor of 15 s / mm to a 16 mm pressed thick plate.
- Table 7 shows the whiteness achieved (expressed in the difference in brightness ⁇ L), based on comparative example V3 as standard.
- Beech wood chips were added during the MDF production process in the digester of an MDF pilot plant with a 40% strength by weight aqueous sodium disulfide solution, corresponding to 6% sodium hydrogen sulfite-free fibers.
- the MDF production process was continued as usual with a throughput of 30 kg / h, the chips were defibered by the refiner, and the obtained fibers were continuously glued by the blowline with the glue batch listed in Table 8.
- the glued wood fibers were dried in the subsequent continuous Trock ⁇ ner to a residual moisture content of about 9 wt .-% and then poured discontinuously to a mat, cold precompressed and at 190 0 C with a pressing time factor of 15 s / mm to a 16 mm pressed thick plate.
- An MDF plate was prepared analogously to the procedure described in Example 5, but without addition of sodium disulfite.
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)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004050278A DE102004050278A1 (de) | 2004-10-14 | 2004-10-14 | Helle bis weiße Holzwerkstoffplatten |
| PCT/EP2005/010848 WO2006042651A1 (de) | 2004-10-14 | 2005-10-08 | Helle bis weisse holzwerkstoffplatten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1817145A1 true EP1817145A1 (de) | 2007-08-15 |
| EP1817145B1 EP1817145B1 (de) | 2015-12-30 |
Family
ID=35448074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05797299.4A Expired - Lifetime EP1817145B1 (de) | 2004-10-14 | 2005-10-08 | Helle bis weisse holzwerkstoffplatten |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20070256804A1 (de) |
| EP (1) | EP1817145B1 (de) |
| JP (1) | JP2008516793A (de) |
| CN (1) | CN100546783C (de) |
| BR (1) | BRPI0515996A (de) |
| DE (1) | DE102004050278A1 (de) |
| WO (1) | WO2006042651A1 (de) |
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| DE102005020742A1 (de) * | 2005-05-02 | 2006-03-30 | Basf Ag | Verwendung von festen Pigmentzubereitungen zur Einfärbung von Cellulose/Polymer-Verbundwerkstoffen |
| EP1899427A1 (de) * | 2005-06-29 | 2008-03-19 | Basf Se | Hellfarbige holzwerkstoffplatten |
| WO2008129048A1 (de) * | 2007-04-24 | 2008-10-30 | Basf Se | Verfahren zur herstellung von gebleichten holzpartikeln und hellen bis weissen holzwerkstoffen |
| DE102007055415C5 (de) * | 2007-11-19 | 2018-11-29 | SWISS KRONO Tec AG | Verfahren zur Verminderung der Emission von gesättigten und ungesättigten Aldehyden aus Holzwerkstoffen |
| US9783996B2 (en) | 2007-11-19 | 2017-10-10 | Valinge Innovation Ab | Fibre based panels with a wear resistance surface |
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| US11235565B2 (en) | 2008-04-07 | 2022-02-01 | Valinge Innovation Ab | Wood fibre based panels with a thin surface layer |
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| ES2749198T3 (es) * | 2008-12-05 | 2020-03-19 | SWISS KRONO Tec AG | Procedimiento para fabricar materiales a base de madera de productos de la trituración que contienen lignocelulosa y tales materiales a base de madera |
| DK2264259T3 (da) * | 2009-06-17 | 2013-08-26 | Vaelinge Innovation Ab | Panel, anvendelse af et panel, fremgangsmåde til fremstilling af et panel og et prepreg |
| PL2523805T3 (pl) | 2010-01-15 | 2018-06-29 | Välinge Innovation AB | Płyta pilśniowa z dekoracyjną powierzchnią wytrzymałą na zużycie |
| JP5840624B2 (ja) | 2010-01-15 | 2016-01-06 | ベーリンゲ、イノベイション、アクチボラグVaelinge Innovation Ab | 明色表面層 |
| US8349234B2 (en) | 2010-01-15 | 2013-01-08 | Ceraloc Innovation Belgium Bvba | Fibre based panels with a decorative wear resistance surface |
| KR20120104621A (ko) * | 2010-01-15 | 2012-09-21 | 세라녹 이노베이션 벨지움 비브이비에이 | 열 및 압력에 의해 생성된 디자인 |
| US10899166B2 (en) | 2010-04-13 | 2021-01-26 | Valinge Innovation Ab | Digitally injected designs in powder surfaces |
| US8480841B2 (en) | 2010-04-13 | 2013-07-09 | Ceralog Innovation Belgium BVBA | Powder overlay |
| US10315219B2 (en) | 2010-05-31 | 2019-06-11 | Valinge Innovation Ab | Method of manufacturing a panel |
| US8728564B2 (en) | 2011-04-12 | 2014-05-20 | Valinge Innovation Ab | Powder mix and a method for producing a building panel |
| MX342546B (es) | 2011-04-12 | 2016-10-03 | Vaelinge Innovation Ab | Capa compensadora de polvo. |
| HRP20200960T1 (hr) | 2011-04-12 | 2020-10-02 | Välinge Innovation AB | Postupak proizvodnje građevinske ploče |
| HRP20241104T1 (hr) | 2011-04-12 | 2024-11-08 | Välinge Innovation AB | Postupak proizvodnje sloja |
| CA2844817C (en) | 2011-08-26 | 2019-07-23 | Valinge Flooring Technology Ab | Panel coating |
| US9604388B2 (en) * | 2012-02-14 | 2017-03-28 | International Paper Company | Process for making composite polymer |
| US8920876B2 (en) | 2012-03-19 | 2014-12-30 | Valinge Innovation Ab | Method for producing a building panel |
| US8993049B2 (en) | 2012-08-09 | 2015-03-31 | Valinge Flooring Technology Ab | Single layer scattering of powder surfaces |
| RU2626948C2 (ru) | 2012-08-09 | 2017-08-02 | Сералок Инновейшн Аб | Однослойное насыпание порошковых поверхностей |
| US9181698B2 (en) | 2013-01-11 | 2015-11-10 | Valinge Innovation Ab | Method of producing a building panel and a building panel |
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| UA118967C2 (uk) | 2013-07-02 | 2019-04-10 | Велінге Інновейшн Аб | Спосіб виготовлення будівельної панелі і будівельна панель |
| EP3057806B1 (de) | 2013-10-18 | 2019-12-11 | Välinge Innovation AB | Verfahren zur herstellung einer bauplatte |
| DE102013113125A1 (de) | 2013-11-27 | 2015-05-28 | Guido Schulte | Fußboden-, Wand- oder Deckenpaneel und Verfahren zu dessen Herstellung |
| DE102013113130B4 (de) | 2013-11-27 | 2022-01-27 | Välinge Innovation AB | Verfahren zur Herstellung einer Fußbodendiele |
| DE102013113109A1 (de) | 2013-11-27 | 2015-06-11 | Guido Schulte | Fußbodendiele |
| EP3092124B1 (de) | 2014-01-10 | 2021-12-15 | Välinge Innovation AB | Verfahren zur herstellung eines furnierten elements |
| EP2924166A1 (de) * | 2014-03-25 | 2015-09-30 | Basf Se | Verfahren zur Herstellung von gebleichtem Holzfaserstoff |
| PL3142857T3 (pl) | 2014-05-12 | 2025-11-03 | Välinge Innovation AB | Sposób wytwarzania fornirowanego elementu |
| EP2944621B9 (de) * | 2014-05-15 | 2017-08-09 | Omya International AG | Faserplattenprodukt mit Calciumcarbonat-haltigem Material |
| EP3310580A4 (de) | 2015-06-16 | 2019-02-13 | Välinge Innovation AB | Verfahren zur herstellung einer bauplatte oder eines oberflächenflächenelements und derartige bauplatte und oberflächenelement |
| EP3173201A1 (de) | 2015-11-30 | 2017-05-31 | Omya International AG | Calciumcarbonat für spanplatten |
| PL3189952T3 (pl) | 2016-01-08 | 2019-03-29 | Omya International Ag | Powlekane in-line płyty na bazie drewna |
| BR112018071242B1 (pt) | 2016-04-25 | 2022-12-06 | Vãlinge Innovation Ab | Elemento folheado e método de produção de tal elemento folheado |
| PL3354430T3 (pl) * | 2017-01-31 | 2020-01-31 | SWISS KRONO Tec AG | Sposób wytwarzania materiału płyty OSB |
| EP3385046A1 (de) | 2017-04-07 | 2018-10-10 | Omya International AG | Linear beschichtete, dekorative platten auf holzbasis |
| US11167533B2 (en) | 2018-01-11 | 2021-11-09 | Valinge Innovation Ab | Method to produce a veneered element and a veneered element |
| WO2019139523A1 (en) | 2018-01-11 | 2019-07-18 | Välinge Innovation AB | A method to produce a veneered element and a veneered element |
| WO2020145870A1 (en) | 2019-01-09 | 2020-07-16 | Välinge Innovation AB | A method to produce a veneer element and a veneer element |
| EP3908460A4 (de) | 2019-01-10 | 2022-10-05 | Välinge Innovation AB | Verfahren zur herstellung eines bauteils und bauteil |
| BE1028461B1 (fr) | 2020-07-02 | 2022-02-08 | Bols Christian Marie | Procédé d'encollage à sec pour la fabrication de panneaux de fibres ou de particules éco-performants et de couleur brillante, ou blanche |
| EP4023812A1 (de) | 2020-12-29 | 2022-07-06 | MM BOARD & PAPER GmbH | Verfahren zur herstellung von produkten auf basis von holz als rohstoff |
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| DE3147989A1 (de) * | 1981-12-04 | 1983-06-16 | Hoechst Ag, 6230 Frankfurt | Dekoratives, insbesondere plattenfoermiges formteil, verfahren zu seiner herstellung und seine verwendung |
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| JP2533104B2 (ja) * | 1985-09-04 | 1996-09-11 | ベーカー、ラーデンブルク、ゲゼルシャフト,ミット,ベシュレンクテル、ハフツング、ゲゼルシャフト,フュール、ベーミシュ、エルツォイクニッセ | 砕木パルプの酸化漂白法 |
| SE455001B (sv) * | 1986-10-03 | 1988-06-13 | Rune Simonson | Forfarande vid tillverkning av produkter innehallande trefibrer |
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| DE19832900C2 (de) * | 1998-07-22 | 2003-04-24 | Security Transfer B V | Streichfarbe, Verfahren zu ihrer Herstellung und gestrichenes Papier mit einer aus der Streichfarbe gebildeten Beschichtung sowie seine Verwendung zur Fälschungssicherung von Formularen |
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| DE10101944A1 (de) * | 2001-01-17 | 2002-07-18 | Basf Ag | Zusammensetzungen für die Herstellung von Formkörpern aus feinteiligen Materialien |
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| DE10247239A1 (de) * | 2002-10-10 | 2004-04-22 | Basf Ag | Verwendung von pigment- und farbstoffenthaltenden Zubereitungen zur dekorativen Einfärbung von Holzwerkstoffen |
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-
2004
- 2004-10-14 DE DE102004050278A patent/DE102004050278A1/de not_active Withdrawn
-
2005
- 2005-10-08 WO PCT/EP2005/010848 patent/WO2006042651A1/de not_active Ceased
- 2005-10-08 US US11/577,253 patent/US20070256804A1/en not_active Abandoned
- 2005-10-08 EP EP05797299.4A patent/EP1817145B1/de not_active Expired - Lifetime
- 2005-10-08 CN CNB2005800353093A patent/CN100546783C/zh not_active Expired - Fee Related
- 2005-10-08 JP JP2007536056A patent/JP2008516793A/ja active Pending
- 2005-10-08 BR BRPI0515996-2A patent/BRPI0515996A/pt active Search and Examination
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006042651A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006042651A1 (de) | 2006-04-27 |
| JP2008516793A (ja) | 2008-05-22 |
| DE102004050278A1 (de) | 2006-04-27 |
| CN100546783C (zh) | 2009-10-07 |
| EP1817145B1 (de) | 2015-12-30 |
| US20070256804A1 (en) | 2007-11-08 |
| CN101039784A (zh) | 2007-09-19 |
| BRPI0515996A (pt) | 2008-08-19 |
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