EP2819819A1 - Method for producing wood materials and/or composite materials - Google Patents
Method for producing wood materials and/or composite materialsInfo
- Publication number
- EP2819819A1 EP2819819A1 EP13707362.3A EP13707362A EP2819819A1 EP 2819819 A1 EP2819819 A1 EP 2819819A1 EP 13707362 A EP13707362 A EP 13707362A EP 2819819 A1 EP2819819 A1 EP 2819819A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hot air
- wood
- fibers
- fiber
- steam
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 239000002023 wood Substances 0.000 title claims description 25
- 239000000463 material Substances 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title abstract description 38
- 239000000835 fiber Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 44
- 238000009413 insulation Methods 0.000 claims abstract description 32
- 239000011093 chipboard Substances 0.000 claims abstract description 24
- 239000011230 binding agent Substances 0.000 claims description 34
- 239000000203 mixture Substances 0.000 claims description 20
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- 239000012978 lignocellulosic material Substances 0.000 claims 1
- 239000004745 nonwoven fabric Substances 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 239000012774 insulation material Substances 0.000 abstract description 6
- 239000003570 air Substances 0.000 description 51
- 229920002522 Wood fibre Polymers 0.000 description 29
- 239000002025 wood fiber Substances 0.000 description 29
- 230000015572 biosynthetic process Effects 0.000 description 10
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 9
- 239000011094 fiberboard Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 8
- 239000011810 insulating material Substances 0.000 description 8
- 229920001807 Urea-formaldehyde Polymers 0.000 description 7
- 241000294754 Macroptilium atropurpureum Species 0.000 description 6
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 description 6
- 238000004026 adhesive bonding Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 4
- 108090000790 Enzymes Proteins 0.000 description 4
- 102000004190 Enzymes Human genes 0.000 description 4
- 108010029541 Laccase Proteins 0.000 description 4
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 4
- 229920001568 phenolic resin Polymers 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 241000209140 Triticum Species 0.000 description 3
- 235000021307 Triticum Nutrition 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 150000002513 isocyanates Chemical class 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 208000003013 permanent neonatal diabetes mellitus Diseases 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229920003180 amino resin Polymers 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- JZLWSRCQCPAUDP-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-triamine;urea Chemical compound NC(N)=O.NC1=NC(N)=NC(N)=N1 JZLWSRCQCPAUDP-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 108010073771 Soybean Proteins Proteins 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 239000003063 flame retardant 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
- 230000004313 glare Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 229940001941 soy protein Drugs 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 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
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
Definitions
- the present invention relates to the field of wood and / or composites (especially fiber composites, chipboard and Oriented or Unoriented Structural Boards and insulation materials and insulation boards) and methods for their preparation.
- thermohydrolytic mechanical
- Phenolformaldehydharze etc. and additives etc. are treated.
- Fiber composite materials are used mostly wet, dry, or
- Fibers after the web formation for example, to porous fibreboard, medium-density fiberboard (MDF), hard fiberboard (HDF), insulation or insulation boards by means of hot pressing (eg Conti-roll), oven drying or steam or air-vapor mixture out.
- MDF medium-density fiberboard
- HDF hard fiberboard
- thermohydrolytically mechanically, thermomechanically, chemically or chemithermomechanically comminuted and / or disrupted
- Strandbasis be prepared (eg Holzspandämmplatte with a density of 60 kg / m 3 to 400 kg / m 3 ).
- polyurethane / isocyanate binders can be used in the process according to the invention, but also the binders commonly used in the fiber, chipboard and OSB board sector, such as aminoplasts or phenoplasts, as well as enzyme-based binders or natural binders.
- this process allows the crosslinking or polymerization of the binder by reaching higher temperatures than usual in the entire plate area.
- the curing temperatures can be better dosed and distributed (eg mutual regulation of hot air and superheated steam as required, binder and material properties)
- Binder costs can be saved.
- the method can be used on most existing systems without costly conversion.
- the method does not take any new time-consuming steps, but can in the
- High-throughput operation can be used.
- the method allows a smaller amount of time. By pre-heating the insulation, fiber, chipboard and OSB / USB boards, the curing times can be significantly reduced. The method allows a lower energy consumption.
- the process allows shorter production lines.
- wood and / or composite material in the context of the present invention in particular materials understood, consisting mainly of
- thermohydrolytically mechanically, thermomechanically, chemically or chemo-thermally mechanically comminuted and / or digested lignocellulose-containing material, which are formed after gluing with a synthetic or natural binder.
- wood and / or composite materials are understood in particular to be fiber composites, particleboard and Oriented or unoriented structural boards, as well as insulating materials and insulating boards.
- fiber composites are in particular single-layer or multi-layer fibreboards, medium-density fiberboard (MDF) and hard fiberboard (HDF), with a gross density of> 400 kg / m 3 to approx. 1200 kg / m 3 , insulation materials or insulation boards or porous fiberboards with a density of 20 kg / m 3 to 400 kg / m 3.
- MDF boards generally have a density> 400 kg / m 3 to 900 kg / m 3 and thicknesses between 3 mm to 60 mm.
- HDF sheets have densities of> 900 kg / m 3 and thicknesses between 1 mm and 10 mm
- Porous fibreboards and wood-fiber insulating materials / sheets generally have gross densities ⁇ 400 kg / m 3 and thicknesses of up to 200 mm.
- chipboard is understood in particular to mean a bulk density of about 400 kg / m 3 to 750 kg / m 3 with thicknesses of 7 mm to 70 mm, in particular single-layer or multi-layer chipboard. or multi-layered
- Insulating materials and insulation boards from chips which may also have a lower density than normal chipboard understood. These have densities ⁇ 400 kg / m 3 .
- OSB Oriented Structural Boards
- multilayer coarse chipboard with crosswise orientation of the chips preferably Strands
- USB unoriented structural boards
- OSB or USB disks usually have bulk densities between 600 kg / m 3 and 700 kg / m 3 and thicknesses between 6 mm and 30 mm. It should be noted that according to the present invention, the wood and / or
- Composite materials may be single-layered or multi-layered. Likewise, the wood and / or composites may be either pure (one type of fibers / chips / strands) or mixed (combining at least two types of fibers / chips / strands or mixtures thereof).
- wood and / or composites may be used without or with additives, e.g. Hardener, water repellents, flame retardants, mediators, etc., are produced.
- additives e.g. Hardener, water repellents, flame retardants, mediators, etc.
- thermomechanically comminuted and / or digested lignocellulose-containing material is meant in particular fibers, chips, strands or mixtures thereof.
- fibers are to be understood as meaning, in particular, wood fibers, but the present invention is not limited to such that under the
- the term “fibers” also means mixtures of wood fibers and synthetic fibers, as well as fibers from single- or multi-year plants, whereby the term “fibers” means in particular - preferably lignocellulose-containing fibers with a length of> 0.5 mm to ⁇ 10 mm and a fiber diameter from> 0.02 mm to ⁇ 1 mm. In particular, fibers with a length of> 1 mm to ⁇ 6 mm and a fiber diameter of> 0.1 mm to ⁇ 1 mm are preferred.
- chips in the sense of the present invention are understood to mean chipped wood material and chips from single- or multi-annual plants; in addition sawing by-products, such as wood shavings, sawdust, peeling chips, etc., as well as chipped particles made of chipboard and Scrap boards also as chips. Chips can be subdivided into cover and middle layer chips. The chip sizes differ in fine material (cover shavings of about 0.3 mm to 1 mm in length and 0.2 mm in thickness) and coarse material (middle shavings of about 1 mm to 5 mm in length, and 0.2 mm to 0.5 mm in thickness ).
- “Strands” are special, namely long and narrow cutting chips, which are particularly suitable for the directional and -unoriented scattering of OSB and USB disks by their shape.
- the dimensions are ideally about 100 mm in length and 10 mm in width.
- binders are understood to mean, in particular, the following binders or mixtures thereof:
- Phenoplasts phenol-formaldehyde resin, PF resin
- thermally activated plastics such as polyethylene, polypropylene.
- Natural binders e.g. Lignins, starch, protein glues (such as
- the binders mentioned can be used alone or in combination.
- the chips or strands are preferably glued after drying in conventional gluing units and fed to the process according to the invention after chip / beach cake control (single-layer or multi-layered).
- throughflow is understood to mean, in particular, that the hot air and then saturated superheated steam in the production of wood and / or composite materials, insulating materials or insulation boards (fiber / chip / OSB / USB) by the entire and compressed nonwoven fabric or the entire chip / beach cake in one or more directions around and / or flows through.
- Pre-compaction or afterwards with hot air flows around and / or flows through and then pressed.
- the mixture of binder and mechanically or thermomechanically comminuted and / or digested lignocellulose-containing material in mat or nonwoven form is provided in step a).
- This can be done depending on the application in non-compressed, precompressed or compacted form.
- the mats or webs can be conveyed batchwise or continuously on a conveyor belt at a corresponding speed; this has proved to be particularly practical and insofar as preferred.
- hot air in the sense of the invention is understood, inter alia, to mean ambient air, gases or pollutant-free exhaust gases or exhaust air from the production process which are brought to heat or heat Air is accelerated in the aggregate eg by a fan into flow (suction or blowing flow) .
- the hot air can be led on one or both sides or on several sides into the fleece or chip cake.
- the hot air used in step b) preferably has a vapor content of ⁇ 5%, more preferably of ⁇ 3%, more preferably of ⁇ 1%. Most preferably, hot air is used without the addition of steam.
- step b) is carried out for a duration of> 2 s to ⁇ 1 h, in particular> 10 s to ⁇ 900 s, but preferably> 60 s to ⁇ 300 s. This has proven to be particularly practical for most applications.
- the upper time limit may alternatively or preferably also be determined by reference to the temperature of the mixture of binder and fibers, i. as soon as the desired
- step b) is stopped.
- the temperature can be determined, for example, by thermocouples, non-contact thermo-measuring devices, infrared thermometers or thermo-hygrometers. The latter instrument has the advantage that moisture can also be measured at the same time.
- step b) is carried out with hot air having a temperature of> 80 ° C to ⁇ 260 ° C, more preferably> 100 ° C to ⁇ 200 ° C, preferably ⁇ 180 ° C, and on most preferably> 120 ° C to ⁇ 160 ° C. This has proven itself in practice.
- the hot air in step b) has a speed of> 0.1 m / s to ⁇ 25 m / s. It has been found in the vast majority of applications that so the desired heating of the mixture
- the hot air in step b) has a speed of> 1 ms, preferably> 2 m / s to ⁇ 20 m / s, more preferably from> 10 m / s to ⁇ 18 m / s.
- step c) is carried out with wet and / or saturated steam. It has been found that the moisture absorption of the resulting fiber composite in the vast majority of applications can be easily kept in the desired frame.
- step c) is carried out with superheated steam having a temperature of> 80 ° C to ⁇ 120 ° C, but more preferably> 100 ° C to ⁇ 110 ° C.
- step c) is carried out for a duration of> 1 s to ⁇ 80 s, in particular> 2 s to ⁇ 20 s, but preferably> 5 s to ⁇ 10 s. This has proven to be particularly practical for most applications.
- Faserdämmplatten / or insulating materials can be done directly after step c) conditioning.
- step c) usually after step c) still a (hot) -Pressung; This can be done by the methods known from the prior art.
- Fig. 1 is a flowchart for a manufacturing method of a Faserdämmplatte according to a first embodiment of the invention
- Fig. 2 is a very schematic cross-sectional view of a possible manufacturing plant for the
- FIG. 3 is a flowchart for a manufacturing method of a fiberboard according to a first embodiment
- Fig. 4 is a very schematic cross-sectional view of a possible manufacturing plant for the
- FIG. 5 is a flowchart for a manufacturing method of an insulation board made of chips according to a third embodiment of the invention.
- Fig. 6 is a flowchart for a manufacturing method of a chipboard according to a first
- Fig. 1 shows a flow chart for a manufacturing method of a Faserdämmplatte according to a first embodiment of the invention.
- fibers from wood chips are first produced by suitable digestion processes. Subsequently, the gluing with binder and a web formation take place. This fleece is then initially flowed around with hot air, whereby a heating takes place at about 100 ° C to 140 °. In the subsequent H conductedampfumströmung further heating to about 150 ° C to 200 ° C. After assembly, the Faserdämmplatte is completed.
- FIG. 2 shows a very schematic cross-sectional view of a possible production line 1 for the method from FIG. 1. It consists of a conveyor belt 10. The fiber-binder mixture 20 guided through this strip is first pre-pressed by a press unit 30, so that a nonwoven is produced. This is followed by a hot air generator 40 a Flowing through with hot air, and by a steam generator 50, a passage of steam (indicated by the sign 51).
- FIG. 3 shows a flowchart for a manufacturing method of a fiberboard according to a first embodiment of the invention. This differs from the flow chart of FIG. 1 in that a hot press step is added before conditioning.
- FIG. 4 shows a very schematic cross-sectional view of a possible manufacturing plant 1 'for the method from FIG. 3. This differs from the plant from FIG. 2 in that a pressing unit 60 is additionally provided.
- Fig. 5 shows a flow chart for a manufacturing method of an insulation board made of chips according to a third embodiment of the invention. This follows essentially the diagram of Fig.l; Also, the system of Fig. 2 is used analogously for the production of insulation boards from chips.
- FIG. 6 shows a flow chart for a chipboard manufacturing method according to a fourth embodiment of the invention. This follows essentially the diagram of Figure 3; Also, the system of Fig. 4 can be used analogously for the production of insulation boards from chips.
- the wood fibers were glued with 10% (atro fiber) urea formaldehyde resin Blender psychologist. After web formation, the fibers were heated with 160 ° C hot air and a Air velocity of 14 m / s for 180 seconds to a temperature of 140 ° C throughout the fleece flows through. Immediately after reaching the temperature, the web was transferred to the immediately adjacent steam system where the entire nonwoven web was heated to about 180 ° C with saturated steam at 108 ° C for 10 seconds. Subsequently, the air conditioning was carried out in standard climate, before the wood fiber insulation was tested according to the valid standards.
- Transverse tensile strength (according to standard EN 1607): 0.06 N / mm 2 (nominal: 0.04 N / mm 2 ), for comparison an identical wood fiber insulation board without prior hot air treatment (steam only): 0.03 N / mm 2 .
- the wood fibers were glued with 4% (atro fiber) PMDI blender. After the web formation, the fibers were passed through with 160 ° C hot air and an air velocity of 14 m / s for 180 seconds to a temperature of 140 ° C throughout the nonwoven. Immediately after reaching the temperature, the web was transferred to the immediately adjacent steam system where the entire nonwoven web was heated to about 180 ° C with saturated steam at 108 ° C for 10 seconds. Subsequently, the air conditioning was carried out in standard climate, before the wood fiber insulation was tested according to the valid standards.
- Transverse tensile strength (according to standard EN 1607): 0.06 N / mm 2 (nominal: 0.04 N / mm 2 ), for comparison an identical wood fiber insulating board without prior hot air treatment (only steam): 0.035
- Wood fibers were mixed with 10% plastic multi-component fibers (sheath consisting of polyethylene, core consisting of polypropylene). After web formation, the fibers were flowed through with 150 ° C. hot air and an air speed of 12 m / s for 120 seconds up to a temperature of 120 ° C. throughout the nonwoven. Immediately after reaching the temperature, the fleece was conveyed further into the directly adjoining steam system, where the entire nonwoven fabric was heated to about 160 ° C. with superheated steam for a few seconds. 4) Production of a wood fiber insulating board with 200 kg / m 3 , thickness 40 mm, enzyme
- the wood fibers were glued using the enzyme-mediator system (10 U / ml laccase, and 10 mM mediator (4-hydroxybenzoic acid)) using the Blender method. After web formation, the fibers were flowed through with 170 ° C hot air and an air velocity of 14 m / s for 240 seconds up to a temperature of 160 ° C in the entire web. Immediately after reaching the temperature, the fleece was conveyed to the directly adjacent steam system where the entire nonwoven fabric was heated to about 180 ° C with 110 ° C superheated steam for 10 seconds. Subsequently, the air conditioning was carried out in standard climate, before the wood fiber insulation was tested according to the valid standards.
- the enzyme-mediator system 10 U / ml laccase, and 10 mM mediator (4-hydroxybenzoic acid)
- the wood fibers were glued with 15% (atro fiber) wheat protein glue and 1% PMDI glue using the blender method. After web formation, the fibers were flowed through with 170 ° C hot air and an air velocity of 14 m / s for 180 seconds up to a temperature of 140 ° C throughout the nonwoven. Immediately after reaching the temperature, the fleece was conveyed to the directly adjacent steam system where the entire nonwoven fabric was heated to about 180 ° C with 110 ° C superheated steam for 10 seconds. Subsequently, the air conditioning was carried out in standard climate, before the wood fiber insulation was tested according to the valid standards. Results:
- Transverse tensile strength (according to standard EN 1607): 0.06 N / mm 2 (nominal: 0.04 N / mm 2 ), for comparison an identical wood fiber insulating board without prior hot air treatment (only steam): 0.04 N / mm 2 .
- the nonwoven fabric was pressed at a pressure of 22 N / mm 2 for 6 s / mm at 190 ° C. Subsequently, the air conditioning was carried out in standard climate, before the MDF panel was checked according to the valid standards.
- the wood fibers were made by means of 10% (atro fiber) urea formaldehyde resin in
- the fibers were flowed through with 150 ° C hot air and an air velocity of 18 m / s for 60 seconds to a temperature of 120 ° C throughout the web.
- the fleece was conveyed further into the directly adjoining steam system and flowed through with saturated steam at 108 ° C. for 5 seconds.
- the fleece was conveyed to a hot press, where the nonwoven fabric with a pressure of 22 N / mm 2 for 3 s / mm at 190 ° C was pressed.
- the air conditioning was carried out in standard climate, before the MDF panel was checked according to the valid standards.
- Transverse tensile strength (according to standard EN 319): 1, 2 N / mm 2 (nominal: 0.6 N / mm 2 );
- an identical MDF board without previous hot air / superheated steam treatment (hot pressing only): 0.6 N / mm 2
- the wood chips were glued with 12% (atro fiber) urea-formaldehyde resin in a chip drum. After the formation of the chip mat (chip cake), the chips were flowed through with 160 ° C hot air and an air velocity of 16 m / s for 120 seconds to a temperature of 120 ° C throughout the chip cake. Immediately after reaching the temperature, the chip cake was conveyed to the steam system immediately adjacent, where the chip mat was heated to about 170 ° C with 100 ° C superheated steam for 10 seconds.
- Transverse tensile strength (measured in accordance with standard EN 1607): 0.06 N / mm 2 ;
- an identical chipboard insulation board without prior hot air treatment (steam only): 0.025 N / mm 2 .
- the wood chips were glued with 5% (atro fiber) PMDI glue in a chip drum.
- the chips were traversed with 160 ° C hot air and an air velocity of 16 m s for 120 seconds to a temperature of 120 ° C throughout the chip cake.
- the chip cake was conveyed to the steam system immediately adjacent, where the chip mat was heated with 100 ° C hot saturated steam at about 170 ° C for 10 seconds.
- the air conditioning was carried out in standard climate, before the chipboard was checked according to the valid standards.
- Transverse tensile strength (measured in accordance with standard EN 1607): 0.072 N / mm 2 ;
- an identical chipboard insulation board without prior hot air treatment (only steam): 0.035 N / mm 2 .
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210101716 DE102012101716A1 (en) | 2012-03-01 | 2012-03-01 | Process for the production of wood and / or composite materials |
PCT/EP2013/054083 WO2013127947A1 (en) | 2012-03-01 | 2013-02-28 | Method for producing wood materials and/or composite materials |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2819819A1 true EP2819819A1 (en) | 2015-01-07 |
EP2819819B1 EP2819819B1 (en) | 2017-07-26 |
Family
ID=47790207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13707362.3A Active EP2819819B1 (en) | 2012-03-01 | 2013-02-28 | Method for producing wood materials and/or composite materials |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2819819B1 (en) |
DE (1) | DE102012101716A1 (en) |
WO (1) | WO2013127947A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013101937A1 (en) | 2013-02-27 | 2014-08-28 | Georg-August-Universität Göttingen Stiftung Öffentlichen Rechts | Wood and composite panel |
DE102014100864A1 (en) * | 2014-01-27 | 2015-07-30 | Georg-August-Universität Göttingen Stiftung Öffentlichen Rechts | Coloring of wood and wood-based materials as well as corresponding wood and wood-based materials |
ES2904805T3 (en) * | 2017-04-25 | 2022-04-06 | SWISS KRONO Tec AG | OSB wood-derived material board |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE892415C (en) * | 1951-06-02 | 1953-10-08 | Alfred Dr-Ing Nowak | Process for the production of hard molded bodies, especially fiberboard |
DE1200523B (en) * | 1963-09-16 | 1965-09-09 | Svenska Flaektfabriken Ab | Method and device for hardening panels made of wood fibers and similar material |
DE3641465C2 (en) * | 1986-12-04 | 1995-08-03 | Uwe Welteke | Process for the production of thermal insulation boards from fiber materials |
DE3641464A1 (en) * | 1986-12-04 | 1988-06-16 | Uwe Welteke | HEAT-INSULATING PANEL CONTAINING NATURAL FIBERS AND METHOD AND DEVICE FOR THEIR PRODUCTION |
DE4440997A1 (en) * | 1994-11-17 | 1996-05-23 | Dieffenbacher Gmbh Maschf | Continuous mfr. of sheets of wood, esp. plywood or chipboard |
DE19701596C2 (en) * | 1996-02-15 | 1999-03-18 | Siempelkamp Gmbh & Co | Process and plant for preheating pressed material mats from glued pressed material |
NZ515288A (en) * | 2001-11-06 | 2003-07-25 | Lignotech Developments Ltd | Processing of ligno-cellulose materials with steam in a pressure vessel |
DE102008039720B4 (en) | 2008-08-26 | 2012-09-13 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Process for the production of wood fiber insulation boards " |
-
2012
- 2012-03-01 DE DE201210101716 patent/DE102012101716A1/en not_active Withdrawn
-
2013
- 2013-02-28 EP EP13707362.3A patent/EP2819819B1/en active Active
- 2013-02-28 WO PCT/EP2013/054083 patent/WO2013127947A1/en active Application Filing
Non-Patent Citations (1)
Title |
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See references of WO2013127947A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2013127947A1 (en) | 2013-09-06 |
EP2819819B1 (en) | 2017-07-26 |
DE102012101716A1 (en) | 2013-09-05 |
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