EP0562219A1 - Zum Verfahren mit zerstäubtem Harz und System zur Herstellung von Hobelspänenplatten - Google Patents

Zum Verfahren mit zerstäubtem Harz und System zur Herstellung von Hobelspänenplatten Download PDF

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Publication number
EP0562219A1
EP0562219A1 EP92830551A EP92830551A EP0562219A1 EP 0562219 A1 EP0562219 A1 EP 0562219A1 EP 92830551 A EP92830551 A EP 92830551A EP 92830551 A EP92830551 A EP 92830551A EP 0562219 A1 EP0562219 A1 EP 0562219A1
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EP
European Patent Office
Prior art keywords
steam
resin binding
wood shaving
atomized
panels
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
Application number
EP92830551A
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English (en)
French (fr)
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EP0562219B1 (de
Inventor
Roberto C/O Sia S.R.L. Bertola
Guido C/O Sia S.R.L. Goglino
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SIA Srl
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SIA Srl
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Publication date
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Publication of EP0562219A1 publication Critical patent/EP0562219A1/de
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Publication of EP0562219B1 publication Critical patent/EP0562219B1/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
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0209—Methods, e.g. characterised by the composition of the agent
    • 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
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0227—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer
    • B27N1/0236—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer with the stirrers rotating about an horizontal axis, e.g. in consecutive casings
    • B27N1/0245—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer with the stirrers rotating about an horizontal axis, e.g. in consecutive casings with a single stirrer shaft

Definitions

  • the present invention relates to an atomized resin binding method and system for making wood-shaving panels.
  • the balance continuously sends the value of the weight of the wood shavings supplied to the resin binding apparatus to an electronic processor device which, in order to hold the dry glue/dry wood shaving weight ratio constant, as set by the operator, drives the RPM's of a pump which supplies the resin binding apparatus with a glue mixture comprising water, a glue, and a curing paraffin mixture.
  • a system is used for resin binding the fine wood shavings, which will form the surfaces of the panel, whereas the other system is used for resin binding the larger size wood shavings which will form the inner portion of the panel.
  • a further forming system preferably comprising four forming apparatus arranged with an in-line arrangement.
  • the first forming apparatus is provided for spreading on a forming ribbon or web a first layer of fine resin bond wood shavings, while the second and third forming apparatus are provided for applying two layers of resin bond wood shavings of larger particle size, whereas the fourth forming apparatus is provided for forming the last layer including fine particle wood shavings.
  • the thus formed “mattress” is entrained, by means of the ribbon or web which is continuously driven under the forming apparatus, inside a continuous pressing apparatus, comprising two steel ribbons sliding on two plates which are heated to a temperature which varies from 180°C to 240°C, with the same speed as the forming web or ribbon.
  • the resin bond wood shaving mattress is set owing to the curing of the resin, so as to provide a wood shaving panel.
  • the mattress temperature will decrease, with respect to a summer time, of about 20°C, so as to require an increased baking time and, accordingly, an increased operating time of the system, in particular from 4.8 sec/mm to 5.9 sec/mm, for a base thickness of 18 mm of the finished wood shaving panel.
  • a further drawback is that, periodically, the operation of the system must be interrupted in order to clean out the resin binding apparatus from resin and wood powder scales.
  • the mentioned forming apparatus are also fouled because of a not optimal distribution of the binding resin on the wood shavings.
  • the aim of the present invention is to overcome the above mentioned drawbacks, by providing such a system and method allowing to greatly reduce the baking time, with a consequent great increase of the making efficiency, and which do not involve any interruption of the making operation in order to clean the resin binding and forming apparatus.
  • a main object of the present invention is to provide such a resin binding method and system which allow to obtain a very great operating efficiency, with a consequent improvement of the mechanical characteristics of the finished wood shaving panel.
  • Another object of the present invention is to provide such a resin binding method and system providing an improved spreading of the mattress by the forming apparatus, with consequent improved thickness tolerances of the raw panels at the outlet of the pressing machine.
  • Yet another object of the present invention is to provide such a method and system which allow to overcome the requirement of using any paraffin emulsion.
  • Yet another object of the present invention is to provide such a method and system which do not include refrigerators for cooling the water circulation jackets of the resin binding apparatus.
  • an improved system for making wood shaving panels characterized in that said system provides for the use of a high temperature fluid which preferably comprises pressurized steam, said fluid being conveyed into a resin binding apparatus in order to increase the temperature of the wood shavings, glue materials and chemical aids, which are so mixed as to provide a wood shaving panel.
  • a high temperature fluid which preferably comprises pressurized steam
  • prior resin binding systems for making wood shaving panels conventionally comprise a dry wood shaving metering hopper 1 which supplies with a continuous flow of dry wood shavings a ribbon balance 2, suspended from a load cell 3.
  • the balance 2 is provided for continuously sending the data related to the weight of the wood shavings supplied to the resin binding apparatus, to an electronic processor, which, in order to hold the dry glue/dry wood shaving weight ratio constant, as it has been set by the operator, will control the RPM's of a pump 5 which supplies the resin binding apparatus 4 with a glue mixture comprising, in particular, water, a glue and a curing paraffin emulsion.
  • Some resin apparatus are used for resin binding the fine wood shavings, which will form the outer surfaces of the panel, and one or more of said resin binding apparatus will be used for resin binding the wood shavings having a larger particle size, and which will form the mattress or mattresses provided for forming the inner portion of the panel.
  • a forming system 6 which essentially comprises four forming apparatus 7, 8, 9, 10 arranged in an in-line arrangement.
  • the first forming apparatus 7 is provided for spreading on a forming ribbon 11 a first layer of fine resin bond wood shavings, while the second 8 and third 9 forming apparatus are provided for forming two resin bond wood shaving layers of larger particle size, and, finally, the first forming apparatus 10 is provided for forming the last layer of fine wood shavings.
  • the thus formed mattress 12 is entrained, by means of the forming ribbon 11 which is continuously driven under the above forming apparatus, inside a continuous pressing apparatus 13 comprising two steel webs or ribbons 14 sliding on heated plates 15 with the same speed as the forming ribbon 11.
  • the resin bond wood shaving mattress 12 is set, owing to the curing of the resin, so as to provide a finished wood shaving panel.
  • the temperature of the mattress 12 decreases, with respect to the summer time temperature, of about 20°C, thereby involving a corresponding increase of the baking time and, accordingly, of the system operating time from 4.8 sec/mm to 5.9 sec/mm, for a base thickness of 18 mm of the finished wood shaving panel.
  • the nebulized resin binding system and method according to the present invention substantially provide to simultaneously subject to heat and an additional dynamic pulse, of even and diffused nature, the mixture of wood shavings, glue and chemical aids which is subjected to a turbulent motion provided by the stirrer 16 operating inside the resin binding apparatus 4.
  • the heat is applied by injecting pressurized steam (at a preset pressure from 0.1 to 13 bars) and, in a preferred embodiment, the steam is super-heated to a temperature which can be preset by the operator (at 120-200°C) and being moreover pre-processed.
  • This turbomixer vessel 19 comprises two nozzles 20 and 21 which are arranged tangentially of the vessel surface and, in its inside, deflecting fins 22 and 23.
  • a condensate separating device 24 arranged upstream of the vessel and in which there are separated the steam fractions which would deposit on the ducts of the system.
  • the nozzle 20 allows super-heated steam to be introduced into the vessel, whereas the nozzle 21 is provided for introducing the several chemical aids or adjuvants.
  • a mixing of the super-heated steam and the chemical adjuvants is performed at the central region of the vessel, because of the provision of the above mentioned deflecting fins 22 and 23 which operate so as to hold the chemical adjuvants separated from the super-heated steam flow, during the first step in which these adjuvants are conveyed to the vessel for processing the steam.
  • the chemical adjuvants comprise surface active agents 25, preferably ethylene and methylene glycoles.
  • These adjuvants are used for modifying the surface condition of the water so as to properly control the thermal balance of this water during the different year seasons, in the pressing step.
  • catalyzer substances 26 in order to accelerate the curing of the glueing mixture and there are also used cleansing substances 27.
  • the latter are used, in particular, for cleaning all of the downstream arranged apparatus.
  • the main feature of the present invention consists substantially of the injection of the superheated steam, which allows to achieve several great advantages.
  • the steam will expand, so as to heat the glueing mixture and render it more "malleable".
  • the steam moreover, causes the wood pores to also expand, so as to allow the glue and other chemical adjuvants to properly enter these pores.
  • the steam provides an optical spreading of the chemical adjuvants through the mattress, without negatively affecting the catalysis of the binding resin.
  • One of the main advantages of the present invention is that the steam provides a great reduction of the baking time.
  • the super-heated steam will cause, in a very advantageous manner, and mainly in winter time, an increase of the mattress temperature of about 20°C, with a corresponding increase of the operating efficiency of about 20%, in the term of the amount or yield of made panels.
  • a further important aspect of the invention is that the disclosed method also allows to obtain a great reduction of the formaldehyde contents of the finished product.
  • the used material provided that they are compatible to the intended use, as well as the contingent size and shapes can be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (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)
  • Reinforced Plastic Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)
  • Polyesters Or Polycarbonates (AREA)
EP92830551A 1992-03-25 1992-10-01 Zum Verfahren mit zerstäubtem Harz und System zur Herstellung von Hobelspänenplatten Expired - Lifetime EP0562219B1 (de)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
ITMI920712 1992-03-25
ITMI920712A IT1254557B (it) 1992-03-25 1992-03-25 Procedimento e impianto per la resinatura nebulizzata per la produzione di pannelli truciolari
CN93104988A CN1094350A (zh) 1992-03-25 1993-04-24 制造刨花板的雾化树脂胶合方法和系统
CA002094940A CA2094940C (en) 1992-03-25 1993-04-27 Atomized resin binding method and system for making wood-shaving panels
ZA934905A ZA934905B (en) 1992-03-25 1993-07-08 Atomized resin binding method and system for making wood-shaving panels
AU41905/93A AU4190593A (en) 1992-03-25 1993-07-13 Atomized resin binding method amd system for making wood-shaving panels
BR9302541A BR9302541A (pt) 1992-03-25 1993-07-27 Sistema para a fabricação de painéis de aparas de madeira e método de aglutinação por resina atomizada
JP5186512A JPH0752111A (ja) 1992-03-25 1993-07-29 経木パネル製造用の樹脂接合システムおよびその方法

Publications (2)

Publication Number Publication Date
EP0562219A1 true EP0562219A1 (de) 1993-09-29
EP0562219B1 EP0562219B1 (de) 1995-06-28

Family

ID=27560581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92830551A Expired - Lifetime EP0562219B1 (de) 1992-03-25 1992-10-01 Zum Verfahren mit zerstäubtem Harz und System zur Herstellung von Hobelspänenplatten

Country Status (11)

Country Link
EP (1) EP0562219B1 (de)
JP (1) JPH0752111A (de)
CN (1) CN1094350A (de)
AT (1) ATE124314T1 (de)
AU (1) AU4190593A (de)
BR (1) BR9302541A (de)
CA (1) CA2094940C (de)
DE (1) DE69203225T2 (de)
ES (1) ES2077387T3 (de)
IT (1) IT1254557B (de)
ZA (1) ZA934905B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787770A1 (fr) * 1998-12-29 2000-06-30 Jpb Creations Procede et dispositif de remplissage automatique d'un bac chauffant avec un produit solide
WO2001007222A1 (de) * 1999-07-22 2001-02-01 Anton Heggenstaller Ag Verfahren zum strangpressen von pflanzlichen kleinteilen
WO2003082535A1 (en) * 2002-03-28 2003-10-09 Laminex Group Limited Fibre/blinder blender
WO2008071260A1 (de) * 2006-12-13 2008-06-19 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Anlage zum beleimen von fasern für die herstellung von faserplatten
WO2012140206A1 (de) * 2011-04-13 2012-10-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren zum betreiben einer anlage und vorrichtung zur beleimung von spänen, fasern oder faserähnlichem material im zuge der herstellung von werkstoffplatten
WO2014180867A1 (de) * 2013-05-06 2014-11-13 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und vorrichtung zur beleimung von spänen, fasern oder faserähnlichem material im zuge der herstellung von werkstoffplatten

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1399772B1 (it) * 2010-04-30 2013-05-03 Imal Srl Apparato per l'iniezione di componenti chimici in un flusso di materiale legnoso incoerente
CN102528885B (zh) * 2011-12-16 2015-03-25 申清章 一种木屑搅拌机的搅拌装置
CN104162922A (zh) * 2013-05-20 2014-11-26 北京泛欧瑞得科技有限公司 一种刨花板高压定量施胶系统
CN107322746B (zh) * 2017-08-25 2019-08-20 江苏露水河人造板有限公司 一种施胶设备及方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH232065A (de) * 1941-05-15 1944-05-15 Fahrni Fred Verfahren zur Herstellung von Pressholzkunstplatten.
DE883337C (de) * 1941-05-16 1953-07-16 Fred Fahrni Verfahren zum Herstellen von Kunstholzplatten
FR1136193A (fr) * 1955-02-01 1957-05-10 Draiswerke Gmbh Perfectionnements apportés aux procédés de fabrication de plaques ou d'autres objets moulés à partir de copeaux de bois ou autres matières ayant la forme de copeaux ou fibres et agglomérés à l'aide de liants thermo-durcissables, ainsi qu'aux dispositifs pour leur mise en oeuvre
US2872337A (en) * 1953-12-30 1959-02-03 Weyerhaeuser Timber Co Method of coating a felted fibrous mat
US3519469A (en) * 1966-04-19 1970-07-07 Mobil Oil Corp Structural board composed of wax-coated cellulosic particles
EP0092699A2 (de) * 1982-04-26 1983-11-02 The Celotex Corporation Zusatz von Isocyanatbinder, im Blasgang, zur Herstellung von Faserplatten
EP0389201A1 (de) * 1989-03-20 1990-09-26 Medite Of Europe Limited Vorrichtung und Verfahren zur Herstellung synthetischer Platten inklusive feuerbeständiger Platten
SU1638011A1 (ru) * 1989-03-23 1991-03-30 Всесоюзный Научно-Исследовательский Институт Деревообрабатывающей Промышленности Смеситель

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH232065A (de) * 1941-05-15 1944-05-15 Fahrni Fred Verfahren zur Herstellung von Pressholzkunstplatten.
DE883337C (de) * 1941-05-16 1953-07-16 Fred Fahrni Verfahren zum Herstellen von Kunstholzplatten
US2872337A (en) * 1953-12-30 1959-02-03 Weyerhaeuser Timber Co Method of coating a felted fibrous mat
FR1136193A (fr) * 1955-02-01 1957-05-10 Draiswerke Gmbh Perfectionnements apportés aux procédés de fabrication de plaques ou d'autres objets moulés à partir de copeaux de bois ou autres matières ayant la forme de copeaux ou fibres et agglomérés à l'aide de liants thermo-durcissables, ainsi qu'aux dispositifs pour leur mise en oeuvre
US3519469A (en) * 1966-04-19 1970-07-07 Mobil Oil Corp Structural board composed of wax-coated cellulosic particles
EP0092699A2 (de) * 1982-04-26 1983-11-02 The Celotex Corporation Zusatz von Isocyanatbinder, im Blasgang, zur Herstellung von Faserplatten
EP0389201A1 (de) * 1989-03-20 1990-09-26 Medite Of Europe Limited Vorrichtung und Verfahren zur Herstellung synthetischer Platten inklusive feuerbeständiger Platten
SU1638011A1 (ru) * 1989-03-23 1991-03-30 Всесоюзный Научно-Исследовательский Институт Деревообрабатывающей Промышленности Смеситель

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787770A1 (fr) * 1998-12-29 2000-06-30 Jpb Creations Procede et dispositif de remplissage automatique d'un bac chauffant avec un produit solide
EP1044904A1 (de) * 1998-12-29 2000-10-18 J.P.B. Creations Verfahren und Vorrichtung zum automatischen Abfüllen eines festen Produkts in einen heissen Behälter
EP1350743A1 (de) * 1998-12-29 2003-10-08 Nordson Corporation Verfahren und Vorrichtung zum automatischen Abfüllen eines festen Produktes in einen heissen Behälter
WO2001007222A1 (de) * 1999-07-22 2001-02-01 Anton Heggenstaller Ag Verfahren zum strangpressen von pflanzlichen kleinteilen
WO2003082535A1 (en) * 2002-03-28 2003-10-09 Laminex Group Limited Fibre/blinder blender
WO2008071260A1 (de) * 2006-12-13 2008-06-19 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Anlage zum beleimen von fasern für die herstellung von faserplatten
WO2012140206A1 (de) * 2011-04-13 2012-10-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren zum betreiben einer anlage und vorrichtung zur beleimung von spänen, fasern oder faserähnlichem material im zuge der herstellung von werkstoffplatten
CN103459107A (zh) * 2011-04-13 2013-12-18 迪芬巴赫机械工程有限公司 材料板制造中运行胶合碎屑、纤维或类似纤维的材料的设备和装置的方法
CN103459107B (zh) * 2011-04-13 2016-02-03 迪芬巴赫机械工程有限公司 材料板制造中胶合碎屑和/或纤维的设备和运行设备的方法
WO2014180867A1 (de) * 2013-05-06 2014-11-13 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und vorrichtung zur beleimung von spänen, fasern oder faserähnlichem material im zuge der herstellung von werkstoffplatten

Also Published As

Publication number Publication date
BR9302541A (pt) 1995-03-01
ITMI920712A0 (it) 1992-03-25
CN1094350A (zh) 1994-11-02
JPH0752111A (ja) 1995-02-28
DE69203225T2 (de) 1995-11-02
AU4190593A (en) 1995-01-27
ITMI920712A1 (it) 1993-09-25
CA2094940C (en) 2003-09-09
ATE124314T1 (de) 1995-07-15
ES2077387T3 (es) 1995-11-16
ZA934905B (en) 1994-02-09
EP0562219B1 (de) 1995-06-28
CA2094940A1 (en) 1994-10-28
IT1254557B (it) 1995-09-25
DE69203225D1 (de) 1995-08-03

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