EP0224205B1 - Verfahren zur Herstellung eines geformten Holzproduktes - Google Patents

Verfahren zur Herstellung eines geformten Holzproduktes Download PDF

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Publication number
EP0224205B1
EP0224205B1 EP86116117A EP86116117A EP0224205B1 EP 0224205 B1 EP0224205 B1 EP 0224205B1 EP 86116117 A EP86116117 A EP 86116117A EP 86116117 A EP86116117 A EP 86116117A EP 0224205 B1 EP0224205 B1 EP 0224205B1
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EP
European Patent Office
Prior art keywords
molding
mixture
die
resin
binding agent
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.)
Expired - Lifetime
Application number
EP86116117A
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English (en)
French (fr)
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EP0224205A2 (de
EP0224205A3 (en
Inventor
Eiichi Imao
Sadao Ikeda
Yoshio Taguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
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Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP60259372A external-priority patent/JPS62119003A/ja
Priority claimed from JP60276610A external-priority patent/JPS62135312A/ja
Priority claimed from JP60276611A external-priority patent/JPS62135313A/ja
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP0224205A2 publication Critical patent/EP0224205A2/de
Publication of EP0224205A3 publication Critical patent/EP0224205A3/en
Application granted granted Critical
Publication of EP0224205B1 publication Critical patent/EP0224205B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • B27N3/08—Moulding or pressing
    • B27N3/20—Moulding or pressing characterised by using platen-presses
    • B27N3/22—Charging or discharging

Definitions

  • the present invention relates to a method for the manufacture of a molded wooden product by the hot compression molding of a ligneous molding material comprising wooden fibers and a binder in a die.
  • the molded wooden products of the kind to which the present invention pertains are lighter than plywood, highly resistant to heat, water and moisture, and strong for their thickness and, because of these desirable qualities, have found extensive utility as so-called hardboard in applications including interior materials used in buildings, articles of furniture, interior materials in used automobiles, and cabinets for television and stereo sets.
  • molded wooden products have been generally manufactured by the following procedure.
  • wood chips are digested with steam at 160° to 180°C in a digester tank of a splitting machine to render their fibers readily disintegratable. Then, the digested wood chips are disintegrated into loose fibers by abrading with a splitting disc. The loose wooden fibers are dried in a current of hot air. The dry wooden fibers are thoroughly mixed with long fibers such as, for example, hemp fibers or polypropylene fibers for enhancement of deep-drawability, are mixed further with a binder made of phenolic resin to improve their molding property, and additionally with a water repellent such as a resin or paraffin.
  • long fibers such as, for example, hemp fibers or polypropylene fibers for enhancement of deep-drawability
  • the wooden fibers resulting from the above mixing procedure (hereinafter referred to as "ligneous molding material”) are formed into a stack of a prescribed thickness and subjected to moderate hot compression molding as with a roll press to form portable molding mats of approximately 10 to 40 mm in thickness.
  • the molding mat is cut in a size slightly larger than the size of the prospective molded wooden product which is desired to be produced.
  • the cut molding mat M1 is laid on a lower segment 2 of a compression molding die 1.
  • lower segment 2 and an upper segment 3 heated by hot plates 6 to a temperature in the range of 180° to 220°C are pressed toward each other by lowering the upper segment 3.
  • gas is evolved from mat M1
  • the die is opened to release the gas into the ambient atmosphere. After sufficient release of the gas, the upper and lower segments are joined again.
  • the upper segment 3 and the segment 2 are brought into tight mutual contact for complete closure of the die as illustrated in Fig. 2.
  • a wet molding method which comprises mixing wooden fibers by the digestion method described above with synthetic resin and cellulose paper, dispersing the resulting mixture in water, filtering the dispersion under pressure and squeezing the filtration residue under pressure (for so-called sheet formation), and hot compression molding the resulting sheet in a die.
  • This method necessitates installation of special devices for the pressure filtration and pressure squeezing, and inevitably entails the problem that the cost of the product is high.
  • It is an object of this invention is to provide a method for the manufacture of a molded wooden product, which method attains improved productivity and yield and, at the same time, permits production of molded wooden products of high quality.
  • the wooden fibers to be used in the present invention are obtained by disintegrating wood chips, for example.
  • This invention does not particularly limit the wooden fibers according to the kind of wood to be used or by the method of disintegration thereof.
  • wood suitable as the source of the wood chips include Japanese cypress (Chamaecyparis obtusa), Japanese red pine (Pinus densiflora), Japan cedar (Cryptomeria Japonica), lauan (genera Parashorea), and beech (Fagus crenatal).
  • a method which comprises digesting wood chips and then disintegrating the digested wood chips mechanically is suitable.
  • the binding agent to be incorporated among the wooden fibers is only required to be capable of supplementing the molding or bonding property of wooden fibers themselves.
  • a thermoplastic resin such as a coumarone resin or a thermosetting resin such as a phenolic resin or a urea resin can be used as the binding agent.
  • the bambooous molding material can have incorporated therein a water repellentt for improvement of waterproofness, or a mold release agent.
  • the method of this invention is characterized by directly supplying a capitaous molding material incorporating therein a binding agent as described above into the cavity of a molding die without previously molding the ligneous molding material into a preparatory shape such as the shape of a mat.
  • This method need only be capable of supplying the ligneous molding material incorporating the binding agent therein directly into the cavity of the die.
  • This material supply can be effected, for example, by causing the ligneous molding material to be carried on a current of air into the cavity of the molding die or allowing the ligneous molding material to fall spontaneously by gravity into the cavity.
  • the timing of an addition such as of a binding agent to the wooden fibers is not specifically critical. This addition may be effected with a mixing machine installed at a position separated from the molding die.
  • the addition can be made near the molding die just before the wooden fibers reach the molding die. Particularly when the addition is made immediately before the arrival of the wooden fibers at the molding die, the possibility of the wooden fibers being partially solidified is eliminated and the ligneous molding material can be placed uniformly into the cavity of the die.
  • the ligneous molding material is simultaneously bound integrally and molded by hot compressing.
  • the molding conditions may be suitably selected depending on the kinds of raw materials such as the wooden fibers and the binding agent used, the shape of the product being molded, and the strength requirements of the molded product.
  • the molding temperature is in the range of 100° to 200°C
  • the molding pressure is in the range of 20 to 80 kg/cm2
  • the molding time is in the range of 20 seconds to 10 minutes.
  • the ligneous molding material incorporating the binding agent and other additives preheated and then subjected to the hot compression treatment.
  • This preheating step is advantageous because the molding cycle can be shortened without it being necessary to elevate the molding temperature.
  • a method which effects the preheating by placing the wooden fibers in a container kept hot with a heater a method which resorts to forced introduction of a current of hot air or steam into the wooden fibers, and a method which relies on the exposure of the wooden fibers to microwave or infrared rays can be used.
  • This preheating treatment can be effected before the wooden fibers are supplied to the molding die or can be carried out within the molding die after the wooden fibers have been supplied into it.
  • the wooden fibers can be simultaneously preheated and supplied to the molding die by forcibly forwarding the wooden fibers into the molding die with the gas which has been used in heating the wooden fibers.
  • the preheating temperature is desirably not higher than the molding temperature and falls in the range of 50° to 150°C. Since the preheating treatment raises the possibility of causing the wooden fibers to be bound with the binding agent, the preheated ligneous molding material is preferably immediately subjected to the compression molding.
  • this invention contemplates a method which comprises compounding a capitaous molding material by directly feeding the molding material into a molding die, and subjecting it to hot compression molding as described above, this method neither requires nor contemplates a step of converting the ligneous molding material into a mat or a step of cutting the mat in a prescribed shape and, therefore, attains simplication of the production process and an improved yield.
  • the ligneous molding material of this invention can achieve an improved compression molding property by forming an increased wall thickness of the portion of the aggregrate of components intended for deep-drawing, or likewise by giving the aggregate of components a shape suitable for deep-drawing. From the ligneous molding materials having this improved compression molding property, molded wooden products free from such flaws as large cavities and cracks and of excellent quality can be obtained.
  • the amount of binding agent added to the wooden fibers can be decreased, the necessity of incorporation of expensive hemp fibers can be reduced or obviated, and the cost of production can be notably lowered.
  • Fig. 1 and Fig. 2 are cross-sectional views of a molding die used in the production of a molded wooden product by a conventional method.
  • Fig. 3 is a process diagram of an operation for the production of a molden wooden product.
  • Fig. 4 is a perspective view of a splitting machine indicated in Fig. 3.
  • Fig. 5 is a perspective view of a mixing machine indicated in Fig. 3.
  • Fig. 6 is a cross-sectional view of an apparatus for the production of a capitaous molding material in accordance the present invention.
  • Fig. 7 is a front view of an opening or door used in a molding die which is part of the production apparatus illustrated in Fig. 6.
  • Fig. 8 is a cross-sectional view illustrating in the closed state, the molding die as part of the production apparatus illustrated in Fig. 6.
  • Fig. 9 and Fig. 10 are cross-sectiional views of modified versions of the production apparatus shown in Fig. 6.
  • a storage tank 11 is provided for keeping wood chips W1 in storage. Wood chips W1 released from the storage tank 11 are washed in a chip washing machine 12 and then fowarded to a splitting machine 13, wherein they are digested with steam and disintegrated into loose fibers. At this time, a water repellent is supplied by a pump 14 to splitting machine 13. The wooden fibers W2 are then conveyed to a hot-air tube 15a of a drying machine 15, and carried on a current of hot air emanating from a blower or drier 15b to a cyclone 15c, whereby they are dried.
  • the dried wooden fibers W2 are then conveyed to a hopper 16a of a mixing machine 16 and then forwarded the main body 16b of mixing machine 16, wherein they are mixed with a binding agent, a mold release agent or other additive.
  • the ligneous molding material consequently obtained is forwarded to the next step.
  • the above-described splitting machine 13 is provided, as illustrated in Fig. 4, with a hopper 13a for temporary storage of the wood chips W1 forwarded from chip washing machine 12 shown in Fig. 3, a first screw feeder 13b disposed beneath hopper 13a and adapted to forward or feed wood chips W1 in a metered quantity, a digester tank 13c for digesting the wood chips W1 supplied from first screw feeder 13b, a second screw feeder 13d disposed below digester tank 13c and adapted to forward digested wood chips W1 in a metered quantity, and a splitting disc 13e for mechanically disintegrating wood chips W1 supplied from second screw feeder 13d.
  • a hopper 13a for temporary storage of the wood chips W1 forwarded from chip washing machine 12 shown in Fig. 3
  • a first screw feeder 13b disposed beneath hopper 13a and adapted to forward or feed wood chips W1 in a metered quantity
  • a digester tank 13c for digesting the wood chips W1 supplied from first screw feeder 13b
  • Digester tank 13c is adapted to receive steam S supplied to the top of the tank from a source not shown. Wood chips W1 placed in digester tank 13c are stirred by a stirring rod 13f and, at the same time, treated with the steam S to provide them in a disintegratable state. The digested wood chips W1 are conveyed by the second screw feeder 13d to the splitting disc 13e, are mechanically abraded and split, and thereafter conveyed via a pneumatic tube 13g to drying machine 15 (Fig. 1).
  • the main body 16b of mixing machine 16, as illustrated in Fig. 5, comprises agitation or stirring blades 16d rotatably mounted in a tubular casing 16c.
  • Casing 16c is further provided adjacent one end thereof with an inlet 16d for admitting wooden fibers W2 through hopper 16a (Fig. 3) and a spray nozzle 16e used for the supply of a binding agent such as a phenolic resin and a water repellent such as paraffin and is further provided adjacent the other end thereof with an outlet 16f for discharge of the resultant mixture (ligneous molding material).
  • wooden fibers W2 which have been admitted through inlet 16d into one end portion of casing 16c are brought together with the binding agent, water repellent, or other additive fed through spray nozzle 16e, thoroughly mixed by agitation blades 16d rotated by drive means not shown, transferred sequentially toward outlet 16f, and discharged therethrough.
  • reference numeral 20 indicates a packing device which comprises a vertical feeding container 21 and a horizontal pneumatic container 22.
  • Feeding container 21 and pneumatic container 22 communicate with each other through an opening 23 which is opened and closed with a shielding plate 25 driven by cylinder 24.
  • Feeding container 21 is provided at the upper end thereof with a feeding port or inlet 26 for admitting the ligneous molding material M and is provided in the interior thereof with pair of rotary brushes 27 disposed above opening 23.
  • Pneumatic container 22 has one end thereof connected to a blower, not shown, and the other end thereof connected to a molding die 30 which will be fully described hereinafter.
  • Pneumatic container 22 further incorporates in the portion situated below opening 23 a weighing plate 28 connected to a load cell, not shown.
  • Molding die 30 comprises an upper segment 31 and a lower segment 32.
  • the die is formed to be inclined by an angle large enough to permit compression of a deeply drawn part and avoid decreasing the draft angle.
  • Upper segment 31 and lower segment 32 define a fixed space when the die is opened and they are fixed respectively to hot plates 34 and 35.
  • a framework 36 is disposed to enclose space 33 which is defined by the upper and lower segments 31 and 32 of the die.
  • Framework 36 is provided with a first opening 37 communicating with the above-described pneumatic container 22 and a second opening 38 communicating on the other side of the framework with the ambient atmosphere. Openings 37 and 38 have suitable lengths and upper and lower widths corresponding to those of the space in molding die 30.
  • Framework 36 is also provided with closures or doors 39 and 40 disposed to be laterally slidable so as to open and close openings 37 and 38.
  • doors 39 and 40 are each provided on one side thereof with an opening or window 41 substantially equal in size to the openings 37 and 38.
  • door 40 associated with second opening 38 is provided in window 41 thereof with a metallic gauze 42 shown in Fig. 6.
  • Doors 39 and 40 are each provided on the lower end thereof with a rack 43.
  • Motor 45 is secured to a bracket 44 projecting from framework 36.
  • Pinion 46 adapted to be meshed with rack 43 is attached to the output shaft of motor 45. Doors 39 and 40, therefore, are caused to slide laterally by the motion imparted by motor 45 and allowed to suitably select the position at which windows 41 are opposed to openings 37 and 38 and the position at which the openings are closed.
  • Upper segment 31 is provided with a gas vent 47, a port 48, a pipe 49 communicating with vacuumizing means, not shown, and a valve 50 inserted in pipe 49.
  • Ligneous molding material M thus delivered into die 30 is prevented by metallic gauze 42 from containing its advance and caused to accumulate in space 33. In the meantime, the air passes through metallic gauze 42 and escapes into the ambient atmosphere.
  • motor 46 is energized, causing doors 39 and 40 to slide and close first and second openings 37 and 38.
  • Upper segment 31 and lower segment 32 are kpet heated to a prescribed temperature (in the range of 180° to 220°C) by hot plates 34 and 35.
  • a prescribed temperature in the range of 180° to 220°C
  • hot plates 34 and 35 When die 30 is filled with ligneous molding material M, upper segment 31 is lowered. As a result, bambooous molding material M is compressed between upper segment 31 and lower segment 32 and is gradually densified with intertwining of the wooden fibers. Eventually, a molded wooden product of a prescribed shape is obtained as illustrated in Fig. 8.
  • valve 50 is opened and gas which is developed is drawn out through gas vent 47. Removal of the gas is continued while the die is being opened. As the die is opened, the molded wooden product is lifted by remaining attached to upper segment 31. Thereafter, this molden wooden product can be easily removed from the die by discontinuing the vacuum drawn on the internal gas.
  • the present embodiment of this invention has the die formed as inclined, the degree of compression and the angle of draft of the deeply drawn part are so large that the molded wooden product can be produced without sustaining any tear or crack in the deeply drawn part and can be easily released from the die.
  • the binding agent and other components are added to the wooden fibers inside the mixing machine. Since the wooden fibers are apt to undergo partial solidification in the presence of the binding agent, it is preferred to supply the resulting mixture to the die interior as soon as possible.
  • Fig. 9 depicts a modified version of a packing device which fulfils the requirements of the invention.
  • parts which are the same as shown in Fig. 6 are denoted by the same reference numerals, and explanation of these parts is not repeated.
  • This embodiment is characterized by providing agitation or stirring blades 51 rotatably disposed inside feeding container 21 and further providing feeding container 21 in the upper part thereof with feeding inlets 52 for admitting wooden fibers W2 (Fig. 3) and feeding inlet 53 for admitting the binding agent and other components.
  • the dry wooden fibers W2 injected through feeding inlets 52 and the binding agent, water repellent, and other components injected through feeding inlet 53 are mixed inside feeding container 21.
  • the ligneous molding material M consequently prepared is supplied to weighing plate 28 inside pneumatic container 22.
  • molding die 30 FIG. 6
  • the ligneous molding material M can be supplied to the interior of the die with uniform packing density and the molded wooden product consequently obtained enjoys improved compression molding properties.
  • the preceding embodiment has been described as effecting the heating of the ligneous molding material M exclusively by means of hot plates 34 and 35 of molding die 30.
  • a device adapted to preheat the ligneous molding material M is effective in shortening the molding cycle.
  • Fig. 10 depicts a modification of the packing device which meets this requirement.
  • parts which are the same as shown in Fig. 6 are denoted by the same reference numerals, and explanation of these parts is not repeated.
  • This embodiment is characterized by enclosing feeding container 21 within an insulating container 61 and interposing a heater 62 between insulating container 61 and feeding container 21.
  • the ligneous molding material M can be injected into feeding container 21 the entirety of which is kept heated to a prescribed temperature by heater 62, it also can be heated automatically to the prescribed temperature, with the result that the regular heating performed inside molding die 30 (Fig. 6) will be completed within a shortened span of time and the time for the molding cycle proportionately shortened.

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  • 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)

Claims (17)

  1. Verfahren zur Herstellung eines geformten Holzprodukts, das die Schritte des unmittelbaren Zuführens eines Holzschnitzel sowie ein Bindemittel enthaltenden Gemischs zu einer Gießform (30) durch Trägerluft und des Durchführens eines Heißformpressens dieses Gemischs in der genannten Gießform (30) umfaßt, dadurch gekennzeichnet, daß das besagte Gemisch (M) durch eine erste Öffnung (37) in einen von einem oberen Formteil (31) sowie einem unteren Formteil (32) der genannten Form umschlossenen Raum eingespeist wird und die erwähnte Luft die genannte Form (30) durch ein eine der besagten einen Öffnung (37) gegenüber-liegende sowie mit der umgebenden Atmosphäre in Verbindung stehende zweite Öffnung (38) bildendes Netzgewebe (42) hindurch verläßt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Bindemittel ein Kunstharz ist.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß das Kunstharz ein Cumaronharz, ein Phenolharz oder ein Harnstoffharz ist.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Gemisch ein wasserabweisendes Mittel oder ein Formtrennmittel enthält.
  5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Formen bei einer Temperatur von 100° bis 220 °C und mit einem Druck von 20 bis 80 kg/cm² für eine Zeit von 20 Sekunden bis 10 Minuten durchgeführt wird.
  6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das besagte Gemisch der genannten Gießform unmittelbar nach Ausbilden des Gemischs aus dem erwähnten Bindemittel und den erwähnten Holzfasern zugeführt wird.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß das Bindemittel ein Kunstharz ist.
  8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß das Kunstharz ein Cumaronharz, ein Phenolharz oder ein Harnstoffharz ist.
  9. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß das Gemisch ein wasserabweisendes Mittel oder ein Formtrennmittel enthält.
  10. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß das Formen bei einer Temperatur von 100° bis 200 °C und mit einem Druck von 20 bis 80 kg/cm² für eine Zeit von 20 Sekunden bis 10 Minuten durchgeführt wird.
  11. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Zuführung des Gemischs zu der genannten Gießform bewerkstelligt wird, nachdem das darin das erwähnte Bindemittel enthaltende Gemisch vorgewärmt ist.
  12. Verfahren nach Anspruch 11 , dadurch gekennzeichnet, daß das Bindemittel ein Kunstharz ist.
  13. Verfahren nach Anspruch 12, dadurch gekennzeichnet daß das Kunstharz ein Cumaronharz, ein Phenolharz oder ein Harnstoffharz ist.
  14. Verfahren nach Anspruch 11 , dadurch gekennzeichnet daß das Gemisch ein wasserabweisendes Mittel oder ein Formtrennmittel enthält.
  15. Verfahren nach Anspruch 11 , dadurch gekennzeichnet daß das Formen bei einer Temperatur von 100° bis 200 °C und mit einem Druck von 20 bis 80 kg/cm² für eine Zeit von 20 Sekunden bis 10 Minuten durchgeführt wird.
  16. Verfahren nach Anspruch 11 , dadurch gekennzeichnet daß das erwähnte Gemisch auf eine Temperatur vorgewärmt wird, die nicht höher als die Temperatur des besagten Heißformpressens ist.
  17. Verfahren nach Anspruch 16, dadurch gekennzeichnet daß das erwähnte Gemisch auf eine Temperatur von 50° bis 150 °C vorgewärmt wird.
EP86116117A 1985-11-19 1986-11-18 Verfahren zur Herstellung eines geformten Holzproduktes Expired - Lifetime EP0224205B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP259372/85 1985-11-19
JP60259372A JPS62119003A (ja) 1985-11-19 1985-11-19 木質系成形体の製造方法
JP60276610A JPS62135312A (ja) 1985-12-09 1985-12-09 木質系成形体の製造方法
JP276611/85 1985-12-09
JP60276611A JPS62135313A (ja) 1985-12-09 1985-12-09 木質系成形体の製造方法
JP276610/85 1985-12-09

Publications (3)

Publication Number Publication Date
EP0224205A2 EP0224205A2 (de) 1987-06-03
EP0224205A3 EP0224205A3 (en) 1989-02-22
EP0224205B1 true EP0224205B1 (de) 1992-07-22

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EP86116117A Expired - Lifetime EP0224205B1 (de) 1985-11-19 1986-11-18 Verfahren zur Herstellung eines geformten Holzproduktes

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EP (1) EP0224205B1 (de)
KR (1) KR940002667B1 (de)
AU (1) AU6535586A (de)
DE (1) DE3686133T2 (de)

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DE50108590D1 (de) * 2000-01-26 2006-03-30 Autefa Automation Gmbh Ballenpresse mit Wiegevorrichtung und Wiegeverfahren
FR2873719B1 (fr) * 2004-07-30 2006-11-17 Cera Procede de realisation d'un matelas de masse volumique predefinie en deux etapes de thermoliage
CN102785280A (zh) * 2012-07-06 2012-11-21 李信 异形三防木质制品生产法
KR101946801B1 (ko) * 2017-06-15 2019-02-12 송준석 목재혼합분상체를 이용한 합성목재 제조장치

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KR940002667B1 (ko) 1994-03-28
DE3686133T2 (de) 1992-12-17
DE3686133D1 (de) 1992-08-27
EP0224205A2 (de) 1987-06-03
KR870004799A (ko) 1987-06-01
EP0224205A3 (en) 1989-02-22
AU6535586A (en) 1987-05-21

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