EP0089013A1 - Procédé de fabrication de corps plats de forme quelconque avec des composés de bois défibré - Google Patents

Procédé de fabrication de corps plats de forme quelconque avec des composés de bois défibré Download PDF

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Publication number
EP0089013A1
EP0089013A1 EP83102347A EP83102347A EP0089013A1 EP 0089013 A1 EP0089013 A1 EP 0089013A1 EP 83102347 A EP83102347 A EP 83102347A EP 83102347 A EP83102347 A EP 83102347A EP 0089013 A1 EP0089013 A1 EP 0089013A1
Authority
EP
European Patent Office
Prior art keywords
preform
screen
sieve
shape
moisture
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
EP83102347A
Other languages
German (de)
English (en)
Other versions
EP0089013B1 (fr
Inventor
Heinz Tönniges
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.)
Deutsche Fibrit Gesellschaft Ebers and Dr Mueller mbH
Original Assignee
Deutsche Fibrit Gesellschaft Ebers and Dr Mueller mbH
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.)
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Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6158026&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0089013(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Deutsche Fibrit Gesellschaft Ebers and Dr Mueller mbH filed Critical Deutsche Fibrit Gesellschaft Ebers and Dr Mueller mbH
Priority to AT83102347T priority Critical patent/ATE22035T1/de
Publication of EP0089013A1 publication Critical patent/EP0089013A1/fr
Application granted granted Critical
Publication of EP0089013B1 publication Critical patent/EP0089013B1/fr
Expired legal-status Critical Current

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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
    • B27N5/00—Manufacture of non-flat articles

Definitions

  • the invention relates to a method for the particularly economical production of wood fiber materials, by means of which the end product is given a variety of properties not previously achieved.
  • Essential raw material sources for such materials are indigenous, regenerable woods, which are processed and properly processed depending on the requirements placed on the finished products and with regard to their specific properties.
  • the requirements that must be placed on these materials naturally arise primarily from economical producibility and possibly long-term stress when the parts are used sensibly.
  • the catalog of criteria for determining the suitability for use is complex and contains, among other things. Requirements such as universal design, fire resistance, heat and water resistance with appropriate water absorption, frost-thaw resistance, root resistance, sound and thermal insulation, low density, high bending tensile strength and rigidity, high compressive and transverse tensile strength, laminability and / or paintability, gas permeability, Uniform surface appearance, pleasant feel and sound, physiological harmlessness, the ability to apply force and screw retention, safe reproducibility, long-term availability of raw materials and much more.
  • the known wet molding processes offer, on the one hand, excellently matted fiber associations with the lowest binder contents, with the resultant high strengths with great degrees of freedom in the design, on the other hand, they require energy-intensive pressing, drying and pressing processes, which are costly.
  • the finished products are consistently drawn on one side by dryer fabric structures.
  • wet-defibrated wood chips of local provenance retain sufficient residual water content during transport in the air flow from room temperature and normal relative humidity in order to remain sufficiently supple from the air flow in the molded state for optimal matting in a molding process.
  • This moisture content is not as troublesome for a preform obtained from the air flow by sieving during compression molding, if substances are present in the same phase which at least partially react with the water under the pressing conditions and bind excesses thereof.
  • the essence of the invention consists in the representation of economically producible, flat fibrous bodies according to processes which bring the advantages of known wet processes with those of known dry processes in such a way that the product cannot be associated with the respective known disadvantages, the raw material base being easily accessible and regenerable and is available in the long term.
  • Defibrated hardwood and / or coniferous wood can be used, which is mechanically frayed and / or those which are chemically digested and / or those which are additionally ground and / or those whose tissues are softened by pressure and / or heat, in a mixture, alone and / or with foreign fibers that can be cellulose-containing and / or cellulose-free, synthetic and / or natural.
  • the atro - (“absolutely dry”) content should be in the range from 98 to 40%, preferably 85 to 55% before being transferred to an air stream and 98 'to 70%, preferably 90 to 75% after removal from the air stream.
  • the fiber material is mixed with binders such as aliphatic, cycloaliphatic, aromatic, araliphatic and / or heterocyclic isocyanates in the air stream and / or suitable mixing elements with at least two isocyanic groups, as described e.g. are known from "Annalen der Chemie", volume 562, pages 75 to 136. Modifications by means of emulsifiers, accelerators, inhibitors or others are carried out according to the invention in addition to additions of further auxiliaries.
  • binders such as aliphatic, cycloaliphatic, aromatic, araliphatic and / or heterocyclic isocyanates in the air stream and / or suitable mixing elements with at least two isocyanic groups, as described e.g. are known from "Annalen der Chemie", volume 562, pages 75 to 136.
  • Modifications by means of emulsifiers, accelerators, inhibitors or others are carried out according to the invention in addition to additions of further auxiliaries.
  • further additives are substances which also irreversibly bind water, such as reactive tonic acid (hydraulic factors), pozzolans (hydraulic additives) in lime, pozzolana, mortar-hydrated pozzolans such as, for example, diatomaceous earth, molar earth, Si substance and Si-Traß, anhydrous Puzzolane together with calcium hydroxide as well as commercially available pozzolan limes, hydraulic limes, roman limes, air-dry clays, tricalcium silicate, dicalcium aluminate ferrite as well as latent hydraulic substances, as well as pozzolan cement, alumina cement, and other other water-hardenable substances such as gypsum and anhydrite are modified, etc., which are known to be modified by additives, etc., which are modifiers, which may be modified by additives, etc. .
  • the fiber preparation is thrown from an air stream onto a contoured sieve surface after or before the combination with all additives, the surface not being loaded from above in order to avoid undesirably high material input in shape-concave and insufficient material coverage in shape-convex areas due to trickling and / or scattering effects .
  • the forming sieve there is a permanent or intermittent vacuum behind the forming sieve, which alone or reinforced by mechanical measures and favors the fiber transport air for a temporary cohesion of the preform and a desirable pre-compression and matting.
  • a weight and / or volume metering of the fiber preparation takes place depending on the shape size and / or desired wall thickness and / or desired density and / or formal level of difficulty and the like. per working cycle of the preform screen, whereby after the quantitative distribution of the fibrous material on the screen, this can optionally be further pre-compressed by suitable measures and then transferred to the press mold.
  • the compression molding takes place under economically favorable conditions at low temperatures and / or short pressing times without a cooling cycle in closed or wide closed tools without a dryer or similar instead, which makes it possible to emboss both partial surfaces with the desired structures.
  • a commercially available polyurethane hardener such as modified 4,4-diphenylmethane diisocyanate (MDI) and / or one of its prepolymers.
  • MDI modified 4,4-diphenylmethane diisocyanate
  • the mass passes into a gas stream and is quantitatively blown from below onto a molding sieve, which approximates the contours of the flat shaped body expected from the method of operation, whereby the air flow is at least temporarily supported by a vacuum zone on the side facing away from the molding surface.
  • the result is a preform which, depending on the dosage, has thicknesses of approx. 1.0 mm to approx. 350 mm with densities of approx. 1 0 kg / m 3 to approx. 150 kg / m 3 , which after separation of the blown air in the Shaped sieve sticks and from there it can be placed on an underside of the mold, which is heated to 40 ° C - 290 ° C, preferably to 110 ° C - 190 ° C. In 3 to 900 s, in particular in 20 to 375 s, at specific pressures of 1 to 130 bar, in particular 4 to 40 bar, the flat shaped body can be pressed and removed from the mold without cooling.

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)
  • Compositions Of Macromolecular Compounds (AREA)
EP83102347A 1982-03-12 1983-03-10 Procédé de fabrication de corps plats de forme quelconque avec des composés de bois défibré Expired EP0089013B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83102347T ATE22035T1 (de) 1982-03-12 1983-03-10 Verfahren zur herstellung flaechiger beliebig geformter koerper auf der basis defibrierter holzbestandteile.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3208963A DE3208963C2 (de) 1982-03-12 1982-03-12 Trockenverfahren zur Herstellung stark konturierter Vorformlinge aus defibrierten beleimten Holzfasern
DE3208963 1982-03-12

Publications (2)

Publication Number Publication Date
EP0089013A1 true EP0089013A1 (fr) 1983-09-21
EP0089013B1 EP0089013B1 (fr) 1986-09-10

Family

ID=6158026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102347A Expired EP0089013B1 (fr) 1982-03-12 1983-03-10 Procédé de fabrication de corps plats de forme quelconque avec des composés de bois défibré

Country Status (9)

Country Link
US (1) US4525321A (fr)
EP (1) EP0089013B1 (fr)
JP (1) JPS58179636A (fr)
AT (1) ATE22035T1 (fr)
AU (1) AU1231883A (fr)
CA (1) CA1209313A (fr)
DE (1) DE3208963C2 (fr)
ES (1) ES520516A0 (fr)
ZA (1) ZA831593B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0355515A2 (fr) * 1988-08-24 1990-02-28 Deutsche Fibrit Gesellschaft Ebers & Dr. Müller mbH Procédé de fabrication d'un support de revêtement intérieur de véhicule fortement déformé en matière à mouler en fibres de bois
EP0507731A1 (fr) * 1991-03-26 1992-10-07 Matec Holding Ag Procédé et dispositif pour fabriquer d'une pièce moulée fibreuse

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0223039B1 (fr) * 1985-10-16 1990-08-08 Toyota Jidosha Kabushiki Kaisha Méthode pour produire une pièce en bois moulée
DE3644067C2 (de) * 1986-12-22 1995-04-20 Lignotock Gmbh Verfahren zum Beleimen von Fasern, Fäden, Spänen oder dergl. schüttfähigen Rohstoffen und Vorrichtung zur Durchführung des Verfahrens
US5008359A (en) * 1988-11-25 1991-04-16 Weyerhaeuser Company Isocyanate modified cellulose products and method for their manufacture
JPH06296200A (ja) * 1992-02-14 1994-10-21 Hashimoto Corp ビデオテープレコーダの自動制御システム
US5204176A (en) * 1992-03-03 1993-04-20 The Dow Chemical Company Structural siding composition
US6433059B1 (en) 1996-03-21 2002-08-13 Santee, Inc. Method for preparing binder materials containing diisocyanates
US6610228B2 (en) 1996-03-21 2003-08-26 Santee, Inc. Dry process for bonding silica-rich plant materials
US6221291B1 (en) 1999-02-26 2001-04-24 Lear Corporation Method for making a preform
US6383320B1 (en) 1999-12-03 2002-05-07 Lear Corporation Method of forming a headliner
US6846849B2 (en) 2001-10-24 2005-01-25 Temple-Inland Forest Products Corporation Saccharide-based resin for the preparation of foam
US6822042B2 (en) 2001-10-24 2004-11-23 Temple-Inland Forest Products Corporation Saccharide-based resin for the preparation of composite products
JP6379989B2 (ja) * 2014-10-20 2018-08-29 セイコーエプソン株式会社 シート製造装置及びシート製造方法

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD90630A (fr) *
US3021290A (en) * 1958-10-27 1962-02-13 Gen Tire & Rubber Co Cellular polyrethane containing wood cellulose and method of preparing same
DE1653174A1 (de) * 1966-05-10 1970-06-04 Novopan Gmbh Verfahren zur Herstellung von Spanplatte oder -koerpern
DE1653177A1 (de) * 1966-03-17 1970-11-05 Novopan Gmbh Verfahren zur Herstellung von Platten oder Formkoerpern durch Verpressen,vorzugsweise Heisspressen,einer mit Bindemittel versetzten Masse aus Holzspaenen,Holzfasern oder aus verholzten Rohstoffen
DE1653178A1 (de) * 1966-07-16 1970-11-12 Novopan Gmbh Verfahren zur Herstellung von Platten oder Formkoerpern aus mit Bindemittel versetzten Partikeln aus Holz,zellulose- oder lignozellulosehaltigen Materialien od.dgl.
DE2052312A1 (de) * 1969-11-24 1972-02-10 Fahrm, Peter, Dr jur , Kilchberg (Schweiz) Verfahren zur Herstellung von Preß korpern
AT312309B (de) * 1969-04-02 1973-12-27 Gen Foam Products Verfahren zur Herstellung eines polyurethanharz-gebundenen, vorwiegend aus Zellulose bestehenden Fasermaterials
FR2193351A5 (en) * 1970-01-19 1974-02-15 Dabernig Josef Lightweight construction matl - of impregnated organic fibres and polyure-thane or polystyrene hard foam bonding agent
DE2325926A1 (de) * 1973-05-22 1974-12-12 Bayer Ag Verfahren zur herstellung lignocellulosehaltiger werkstoffe
US3930110A (en) * 1974-02-11 1975-12-30 Ellingson Timber Co Manufacture of multilayer panels using polyisocyanate: formaldehyde binder system
DD136239A1 (de) * 1978-02-13 1979-06-27 Guenter Zeppenfeld Verfahren zur herstellung von formkoerpern und plattenfoermigen werkstoffen aus polyurethanschaum-partikelgemischen
DE2909717A1 (de) * 1979-03-13 1980-09-25 Guenther Krupke Verfahren zur herstellung von faserplatten und bauelementen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152901A (en) * 1936-09-05 1939-04-04 F W Manning Company Ltd Method of making filter fabric
CH466568A (de) * 1966-01-13 1968-12-15 Urlit Ag Verfahren zum Herstellen von Hartplatten sowie nach dem Verfahren hergesteller Hartplatte
LU55657A1 (fr) * 1968-03-11 1969-10-02
DE2609284C3 (de) * 1976-03-04 1979-08-30 Kce Kiss Consulting Engineers Verfahrenstechnik Gmbh, 1000 Berlin Vorformwerkzeug zur Herstellung von Verformungen aus zerkleinerten, mit mindestens einem Bindemittel gemischten Roh- und/oder Sekundärrohstoffen
US4257995A (en) * 1979-05-03 1981-03-24 The Upjohn Company Process for preparing particle board and polyisocyanate-phosphorus compound release agent composition therefor
US4375448A (en) * 1979-12-21 1983-03-01 Kimberly-Clark Corporation Method of forming a web of air-laid dry fibers

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD90630A (fr) *
US3021290A (en) * 1958-10-27 1962-02-13 Gen Tire & Rubber Co Cellular polyrethane containing wood cellulose and method of preparing same
DE1653177A1 (de) * 1966-03-17 1970-11-05 Novopan Gmbh Verfahren zur Herstellung von Platten oder Formkoerpern durch Verpressen,vorzugsweise Heisspressen,einer mit Bindemittel versetzten Masse aus Holzspaenen,Holzfasern oder aus verholzten Rohstoffen
DE1653174A1 (de) * 1966-05-10 1970-06-04 Novopan Gmbh Verfahren zur Herstellung von Spanplatte oder -koerpern
DE1653178A1 (de) * 1966-07-16 1970-11-12 Novopan Gmbh Verfahren zur Herstellung von Platten oder Formkoerpern aus mit Bindemittel versetzten Partikeln aus Holz,zellulose- oder lignozellulosehaltigen Materialien od.dgl.
AT312309B (de) * 1969-04-02 1973-12-27 Gen Foam Products Verfahren zur Herstellung eines polyurethanharz-gebundenen, vorwiegend aus Zellulose bestehenden Fasermaterials
DE2052312A1 (de) * 1969-11-24 1972-02-10 Fahrm, Peter, Dr jur , Kilchberg (Schweiz) Verfahren zur Herstellung von Preß korpern
FR2193351A5 (en) * 1970-01-19 1974-02-15 Dabernig Josef Lightweight construction matl - of impregnated organic fibres and polyure-thane or polystyrene hard foam bonding agent
DE2325926A1 (de) * 1973-05-22 1974-12-12 Bayer Ag Verfahren zur herstellung lignocellulosehaltiger werkstoffe
US3930110A (en) * 1974-02-11 1975-12-30 Ellingson Timber Co Manufacture of multilayer panels using polyisocyanate: formaldehyde binder system
DD136239A1 (de) * 1978-02-13 1979-06-27 Guenter Zeppenfeld Verfahren zur herstellung von formkoerpern und plattenfoermigen werkstoffen aus polyurethanschaum-partikelgemischen
DE2909717A1 (de) * 1979-03-13 1980-09-25 Guenther Krupke Verfahren zur herstellung von faserplatten und bauelementen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0355515A2 (fr) * 1988-08-24 1990-02-28 Deutsche Fibrit Gesellschaft Ebers & Dr. Müller mbH Procédé de fabrication d'un support de revêtement intérieur de véhicule fortement déformé en matière à mouler en fibres de bois
DE3828655C1 (fr) * 1988-08-24 1990-05-31 Deutsche Fibrit Gesellschaft Ebers & Dr. Mueller Mbh, 4150 Krefeld, De
EP0355515A3 (fr) * 1988-08-24 1991-12-04 Deutsche Fibrit Gesellschaft Ebers & Dr. Müller mbH Procédé de fabrication d'un support de revêtement intérieur de véhicule fortement déformé en matière à mouler en fibres de bois
EP0507731A1 (fr) * 1991-03-26 1992-10-07 Matec Holding Ag Procédé et dispositif pour fabriquer d'une pièce moulée fibreuse

Also Published As

Publication number Publication date
US4525321A (en) 1985-06-25
ATE22035T1 (de) 1986-09-15
EP0089013B1 (fr) 1986-09-10
DE3208963C2 (de) 1985-06-27
ZA831593B (en) 1983-11-30
ES8407418A1 (es) 1984-10-01
ES520516A0 (es) 1984-10-01
CA1209313A (fr) 1986-08-12
JPS58179636A (ja) 1983-10-20
AU1231883A (en) 1983-09-15
DE3208963A1 (de) 1983-09-29

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