WO2008089989A1 - Verfahren zum herstellen von flachspänen aus holz - Google Patents
Verfahren zum herstellen von flachspänen aus holz Download PDFInfo
- Publication number
- WO2008089989A1 WO2008089989A1 PCT/EP2008/000563 EP2008000563W WO2008089989A1 WO 2008089989 A1 WO2008089989 A1 WO 2008089989A1 EP 2008000563 W EP2008000563 W EP 2008000563W WO 2008089989 A1 WO2008089989 A1 WO 2008089989A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- precursor
- knife
- hydrothermal treatment
- chips
- treatment
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/005—Tools therefor
Definitions
- the invention relates to a method for producing flat chips made of wood, also called "OS chips” ("Oriented Strand”).
- Structure-oriented wood-based materials are special lignocellulose-containing plates or molded parts with directed mechanical and hygric properties.
- LSL, PSL and especially OSB are expected.
- OSB is the structure-oriented wood-based material with the greatest economic importance. Due to the shape and size of the beaches, the corresponding wood-based materials have high mechanical properties. They are therefore particularly useful as construction elements in construction.
- the precursor is substantially rod-shaped, the precursor is fed to a chipper, comprising a plurality of knives, which are arranged on a knife ring whose cutting at least approximately run parallel to the ring axis, and enclose a working space; the precursor is set in rotation about the knife ring axis, in this case aligned so that it is substantially parallel to the ring axis and is pressed by centrifugal force against the cutting edges of the knife; the precursor has a length of several centimeters.
- the invention has for its object to provide a method by which a beach material from lumpy pieces of wood (precursors such as Maxichips and flat chips) can be produced, which contains high shares of pronounced flat strands and low fines. Furthermore, the demand for cutting energy should be minimal.
- the essential ideas of the invention relate to the shape of the precursor and the provision of a further treatment step: namely, the precursor is subjected to an intermediate treatment with the action of heat and moisture before it is further treated mechanically.
- the mentioned treatment with moisture and heat is applied to the precursor (Maxichip) after chopping. It can be combined with the application of superatmospheric pressure.
- any heat sources may be used, such as microwave or infrared devices. Also, a hot water treatment or steam treatment is considered.
- the entire process can be carried out batchwise or continuously.
- screw conveyors When working continuously, the use of screw conveyors is conceivable.
- the screws can be fed with a woodchip-water mixture.
- the pressure can be generated by a butterfly valve at the end of the screw conveyor having a limited outlet gap releases, and thus builds up a pressure in the screw conveyor.
- a steam treatment can take place.
- the application of negative pressure or pressure is applicable.
- the machining process provides a high proportion of shavings, and a minimum amount of unwanted fines; -
- the quality of the flakes is better than the previously produced:
- Chips are of integrity surface, suitable for creating OS panels; the chips are still of higher strength than before; The beaches also show fewer cracks due to the hydrothermal treatment and gentle cutting
- starting materials are any lignocellulosic materials, such as wood, waste wood, shredded wood, recycled wood, as well as exotic materials such as bamboo, palm trees.
- FIG. 1 shows in a block diagram the sequence of a method for
- Figure 2 shows a chipper in a front view, that is in a
- FIG. 3 shows on an enlarged scale an axial section of the chipper according to FIG. 2.
- Figure 4 shows an enlarged view of a detail of Figure 3, namely a knife package.
- FIG. 1 shows the following stations of the method for producing OS disks:
- the material to be processed is first stored in station 100.
- these are used wooden pallets.
- all possible other lignocellulosic materials come into consideration, as mentioned above.
- a pre-shredding takes place, for example in a shredder.
- station 102 a hacking takes place.
- the precursor is produced. It is at least approximately rod-shaped.
- Treatment can consist in a dip in hot water.
- the water has a temperature above 50 ° C., for example 60, 70, 80, 90, 100 ° C.
- the residence time is between 3 and 30 minutes. Even longer periods are possible, for example one hour, two hours and so on.
- brewing with superheated steam is also considered.
- the wet-hot treatment may also take place under superatmospheric or subatmospheric pressure, thus in a closed vessel.
- the precursor - thus the chips - completely saturated.
- the precursor is pre-classified.
- OS chips with a chip thickness of 0.2 to 0.8 mm, preferably 0.2 to 0.6 mm.
- the chipping is followed by indulgence in station 106.
- the chipper comprises a rotor 1, which is driven by a shaft 2.
- the rotor 1 contains a ring of axially parallel blades 3.
- a knife basket with likewise axially parallel blades 4 surrounds the rotor 1.
- Rotor 1 and knife basket are in turn arranged in a housing 5 and jointly enclosed by this.
- Housing 5 has an inlet 6 for the wood chips to be supplied and an outlet for the finished chip.
- Figure 3 illustrates in two places a rod-shaped precursor 20.
- This is ordered in the present case as a regular rectangular block. Instead, however, this precursor could also be designed differently, for example, have irregular boundary surfaces. It is only important that this precursor 20 is more or less rod-shaped, that is, has a longitudinal extent that is greater than the transverse extensions in planes perpendicular thereto.
- the precursor 20 is fed to the shaft-shaped inlet 6 - see arrow. It then passes into the space enclosed by the rotor 1 interior.
- the precursor 20 - automatically or by a corresponding orientation device - such that it runs mainly to the longitudinal axis of the rotor shaft 2, and thus more or less parallel to the blades 4.
- the precursor has a considerable size, in particular a considerable length compared with those wood chips that are fed to the usual knife ring chipper.
- FIG. 4 shows a knife package in an axially perpendicular section. This knife package is part of the knife ring of the machine.
- Each knife package is constructed as follows: A support block 10 carries a cutting blade 11 which is fixed by means of a clamping plate 12 and a screw 13 on the support block 10.
- Each support block 10 has a wear surface 10.1.
- the decisive factor is that these wearing surfaces 10.1 facing the machine axis are approximately flat and thus not concentric as in the prior art.
- the wear surface 10.1 is formed as in the case of Figure 4 from a wear plate 10.2, which in turn is attached to the rest of the support block 10.
- the wear surface can also be formed from a wear layer that has been produced by applying a wear layer, preferably by build-up welding or spraying and subsequent grinding.
- a razor 14 is provided which is fastened on the side of the supporting block 10 opposite the cutting blade 11 and which cooperates with the cutting blade of the adjacent blade package. Also, a wear plate is conceivable in which the hanger is integrated and takes over its function. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Debarking, Splitting, And Disintegration Of Timber (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Paper (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08715659A EP2121255B1 (de) | 2007-01-25 | 2008-01-25 | Verfahren zum herstellen von flachspänen aus holz |
AT08715659T ATE485144T1 (de) | 2007-01-25 | 2008-01-25 | Verfahren zum herstellen von flachspänen aus holz |
CA002676638A CA2676638A1 (en) | 2007-01-25 | 2008-01-25 | Method of producing flat chips out of wood |
US12/449,130 US20100126630A1 (en) | 2007-01-25 | 2008-01-25 | Method of producing flat chips out of wood |
DE502008001588T DE502008001588D1 (de) | 2007-01-25 | 2008-01-25 | Verfahren zum herstellen von flachspänen aus holz |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007003698A DE102007003698B3 (de) | 2007-01-25 | 2007-01-25 | Verfahren zum Herstellen von Flachspänen aus Holz |
DE102007003698.3 | 2007-01-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008089989A1 true WO2008089989A1 (de) | 2008-07-31 |
Family
ID=39277936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/000563 WO2008089989A1 (de) | 2007-01-25 | 2008-01-25 | Verfahren zum herstellen von flachspänen aus holz |
Country Status (10)
Country | Link |
---|---|
US (1) | US20100126630A1 (de) |
EP (1) | EP2121255B1 (de) |
CN (1) | CN101610881A (de) |
AT (1) | ATE485144T1 (de) |
CA (1) | CA2676638A1 (de) |
CY (1) | CY1111244T1 (de) |
DE (2) | DE102007003698B3 (de) |
ES (1) | ES2351180T3 (de) |
RU (1) | RU2447989C2 (de) |
WO (1) | WO2008089989A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114939912B (zh) * | 2022-06-14 | 2022-12-16 | 安吉竹能生物质能源厂(普通合伙) | 一种刨花装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2874909A (en) * | 1953-10-14 | 1959-02-24 | Pallmann Ludwig | Process and device for producing flat wood shavings |
DE1171143B (de) * | 1962-02-14 | 1964-05-27 | Max Himmelheber Dipl Ing | Verfahren und Vorrichtung zur Gewinnung flacher Holzspaene fuer die Herstellung von Holzspanplatten |
DE2512570A1 (de) * | 1973-10-25 | 1976-09-30 | Iggunds Bruk Ab | Messereinrichtung fuer hackmaschinen |
WO2002042039A1 (de) * | 2000-11-25 | 2002-05-30 | B. Maier Zerkleinerungstechnik Gmbh | Vorprodukt, verfahren und vorrichtung zum erzeugen von spänen aus holz |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1027050A1 (ru) * | 1981-10-23 | 1983-07-07 | Всесоюзный Научно-Исследовательский Институт Деревообрабатывающей Промышленности | Способ изготовлени древесностружечных плит |
DE19622421A1 (de) * | 1996-06-04 | 1997-12-11 | Fraunhofer Ges Forschung | Verfahren zur Aufbereitung von Altholz |
GB9625068D0 (en) * | 1996-12-02 | 1997-01-22 | Marlit Ltd | Method for production of lignocellulosic composite materials |
DE19900566B4 (de) * | 1999-01-09 | 2005-03-24 | B. Maier Zerkleinerungstechnik Gmbh | Messerring-Zerspaner zum Zerspanen von Hackschnitzeln |
US20070151662A1 (en) * | 2005-12-23 | 2007-07-05 | Huber Engineered Woods L.L.C. | Integrated process for simultaneous manufacture of oriented strand lumber and board products |
CO6910042A1 (es) * | 2011-09-28 | 2014-03-31 | Titan Wood Ltd | Paneles de fibras de densidad media |
-
2007
- 2007-01-25 DE DE102007003698A patent/DE102007003698B3/de not_active Revoked
-
2008
- 2008-01-25 WO PCT/EP2008/000563 patent/WO2008089989A1/de active Application Filing
- 2008-01-25 DE DE502008001588T patent/DE502008001588D1/de active Active
- 2008-01-25 CA CA002676638A patent/CA2676638A1/en not_active Abandoned
- 2008-01-25 AT AT08715659T patent/ATE485144T1/de active
- 2008-01-25 RU RU2009131934/13A patent/RU2447989C2/ru not_active IP Right Cessation
- 2008-01-25 ES ES08715659T patent/ES2351180T3/es active Active
- 2008-01-25 EP EP08715659A patent/EP2121255B1/de not_active Revoked
- 2008-01-25 US US12/449,130 patent/US20100126630A1/en not_active Abandoned
- 2008-01-25 CN CNA2008800043565A patent/CN101610881A/zh active Pending
-
2010
- 2010-12-06 CY CY20101101121T patent/CY1111244T1/el unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2874909A (en) * | 1953-10-14 | 1959-02-24 | Pallmann Ludwig | Process and device for producing flat wood shavings |
DE1171143B (de) * | 1962-02-14 | 1964-05-27 | Max Himmelheber Dipl Ing | Verfahren und Vorrichtung zur Gewinnung flacher Holzspaene fuer die Herstellung von Holzspanplatten |
DE2512570A1 (de) * | 1973-10-25 | 1976-09-30 | Iggunds Bruk Ab | Messereinrichtung fuer hackmaschinen |
WO2002042039A1 (de) * | 2000-11-25 | 2002-05-30 | B. Maier Zerkleinerungstechnik Gmbh | Vorprodukt, verfahren und vorrichtung zum erzeugen von spänen aus holz |
Also Published As
Publication number | Publication date |
---|---|
RU2447989C2 (ru) | 2012-04-20 |
ATE485144T1 (de) | 2010-11-15 |
DE102007003698B3 (de) | 2008-05-15 |
CY1111244T1 (el) | 2015-06-11 |
EP2121255B1 (de) | 2010-10-20 |
RU2009131934A (ru) | 2011-02-27 |
ES2351180T3 (es) | 2011-02-01 |
CA2676638A1 (en) | 2008-07-31 |
DE502008001588D1 (de) | 2010-12-02 |
EP2121255A1 (de) | 2009-11-25 |
CN101610881A (zh) | 2009-12-23 |
US20100126630A1 (en) | 2010-05-27 |
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