EP0366944A1 - Method for applying a ready to be used glue to the suface of wooden parts - Google Patents
Method for applying a ready to be used glue to the suface of wooden parts Download PDFInfo
- Publication number
- EP0366944A1 EP0366944A1 EP89118172A EP89118172A EP0366944A1 EP 0366944 A1 EP0366944 A1 EP 0366944A1 EP 89118172 A EP89118172 A EP 89118172A EP 89118172 A EP89118172 A EP 89118172A EP 0366944 A1 EP0366944 A1 EP 0366944A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ready
- glue
- formaldehyde
- wooden parts
- applying
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/002—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles
- B05C5/004—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles the work consisting of separate rectangular flat articles, e.g. flat sheets
Definitions
- the present invention relates to a method for applying glue to the surface of wooden parts, in which the ready-to-use glue is applied as a cast film to the surface of the wooden parts.
- DE-B 21 01 800 describes a method for applying glue in the manufacture of wood glue constructions, the glue being kept circulating in a circuit and being applied to the broad side of the workpiece in the form of cords.
- a disadvantage of this method is that when the wooden parts are pressed, the glue does not form a coherent film in places and defects can occur in the wooden glue constructions.
- DE-A 24 16 032 describes a method for assembling wood products, the liquid resin and the liquid hardener being applied separately by means of a strip distributor.
- a disadvantage of this process is that, in addition to the formation of imperfections described above, inadequate mixing of hardener and resin can also occur in places, whereby wetted points can arise which do not harden or harden only insufficiently.
- EP-B-95 678 describes a method for forming a liquid film on a board by casting a flow curtain from a dispensing container.
- EP-A-241 891 describes a device for applying glue to wooden parts, with the aid of which a cast film is formed by means of a guide element.
- the German patent application P 37 12 347.5 sees for this lead organ improvements in the form of anti-congestion devices. According to both documents, resin and hardener are applied separately by two devices.
- the object of the present invention was to develop a method for applying glue to the surface of wooden parts, which allows a uniform application of ready-to-use glue in one step and avoids defects in the form of non-wetted surfaces or incomplete mixing of the resin components.
- the task was solved by applying a ready-to-use glue as a cast film using a guide element.
- the present invention relates to a method for applying a ready-to-use glue to the surface of wooden parts, with a ready-to-use glue held in circulation in a circuit via a storage container, a pouring head provided with a guide element, under which a feed device for wooden parts is arranged, and a collecting trough , whereby the ready-to-use glue is applied as a cast film to the surface of the wooden parts.
- the device required for this method is known and is not the subject of the present invention. It is described in German patent application P 37 12 347.5 and essentially consists of a storage container, a pouring head designed as a cylindrical hollow body with outlet openings and a guide element, a feed device for the wood to be coated, a collecting trough and the associated ring line with two pumps .
- the devices on the guide element of the pouring head that prevent air congestion are essential for the process.
- a ready-to-use glue i.e. Apply a glue that contains all the components required for its further processing or curing, such as solvents, catalysts, hardeners, additives and auxiliary substances, fillers and extenders or their mixtures, and the excess amount is collected in a collecting container and applied to the Cycle returned.
- the ready-to-use glue is heated to temperatures of 5 to 30 ° C., preferably 10 to 20 ° C.
- the ready-to-use glue can be tempered at any point on the device wetted with glue, preferably in the collecting container of the device.
- the method according to the invention allows the use of various types of liquid glue, e.g. of urea-formaldehyde, melamine-urea-formaldehyde, melamine-urea-phenol-formaldehyde, phenol-resorcinol-formaldehyde, resorcinol-formaldehyde, phenol-formaldehyde, polyvinyl acetate glues, their mixtures and other glues customary in wood processing.
- liquid glue e.g. of urea-formaldehyde, melamine-urea-formaldehyde, melamine-urea-phenol-formaldehyde, phenol-resorcinol-formaldehyde, resorcinol-formaldehyde, phenol-formaldehyde, polyvinyl acetate glues, their mixtures and other glues customary in wood processing.
- Melamine-urea-formaldehyde condensates, resorcinol-urea-formaldehyde condensates or polyvinyl acetate glues are preferably used.
- the pot life is adjusted via a suitable choice of, for example, hardener or catalyst so that a processing time of at least half an hour, preferably at least one hour, is ensured.
- the measures required for this are generally known.
- just enough acid or acid-forming compounds are used as hardeners that the viscosity of the ready-to-use glue does not exceed 25,000 mPas during the processing time.
- formaldehyde or formaldehyde-forming compounds are used as hardeners.
- the ready-to-use glues can be used in both thixotropic and non-thixotropic settings.
- the thixotropic settings contain common thixotropic agents such as silicates.
- customary additives and auxiliaries such as fillers and extenders, for example cereal or leguminous flours, can also be present in the ready-to-use glue in amounts of up to 50% by weight, based on the solids of the ready-to-use glue.
- the processing viscosity of the ready-to-use glue is 250 to 12000, preferably 1000 to 10000 mPa ⁇ s at 20 ° C.
- the feed rate of the wood that runs under the glue film is 0.5 to 4 m / s, preferably 1.5 to 3 m / s.
- the application of the ready-to-use glue is 80 to 600 g / m2, preferably 300 to 500 g / m2.
- Wooden parts with a uniform layer of glue are obtained by the process according to the invention. After hardening, this can serve as a surface treatment or the glued wood parts can be used to produce laminated wood materials or glulam.
- the method according to the invention was tested in gluing tests with beech wood specimens of 150 x 300 mm format.
- This glue liquor viscosity approx. 1800 mPa ⁇ s
- test pieces were placed on the glued ones and pressed with a pressure of approx. 8 N / mm2.
- the test pieces were stored in a standard atmosphere (20 ° C./65% relative atmospheric humidity) for 24 hours under pressure.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Auftragen von Leim auf die Oberfläche von Holzteilen, bei dem man den gebrauchsfertigen Leim als Gießfilm auf die Oberfläche der Holzteile aufträgt.The present invention relates to a method for applying glue to the surface of wooden parts, in which the ready-to-use glue is applied as a cast film to the surface of the wooden parts.
Es sind viele Verfahren zum Auftragen von Leim auf die Oberfläche von Holzteilen bekannt. So wird in der DE-B 21 01 800 ein Verfahren zum Auftragen von Leim bei der Herstellung von Holzleimkonstruktionen beschrieben, wobei der Leim in einem Kreislauf umlaufend gehalten wird und in Form von Schnüren auf die Werkstück-Breitseite aufgebracht wird.Many methods are known for applying glue to the surface of wooden parts. For example, DE-B 21 01 800 describes a method for applying glue in the manufacture of wood glue constructions, the glue being kept circulating in a circuit and being applied to the broad side of the workpiece in the form of cords.
Nachteilig bei diesem Verfahren ist, daß beim Verpressen der Holzteile der Leim stellenweise keinen zusammenhängenden Film bildet und es zu Fehlstellen in den Holzleimkonstruktionen kommen kann.A disadvantage of this method is that when the wooden parts are pressed, the glue does not form a coherent film in places and defects can occur in the wooden glue constructions.
In der DE-A 24 16 032 wird ein Verfahren zum Zusammenfügen von Holzprodukten beschrieben, wobei das flüssige Harz und der flüssige Härter jeweils getrennt mittels eines Streifenverteilers aufgetragen wird.DE-A 24 16 032 describes a method for assembling wood products, the liquid resin and the liquid hardener being applied separately by means of a strip distributor.
Nachteilig an diesem Verfahren ist, daß es neben der oben geschilderten Bildung von Fehlstellen auch noch zu stellenweise ungenügender Vermischung von Härter und Harz kommen kann, wobei benetzte Stellen entstehen können, die nicht oder nur ungenügend aushärten.A disadvantage of this process is that, in addition to the formation of imperfections described above, inadequate mixing of hardener and resin can also occur in places, whereby wetted points can arise which do not harden or harden only insufficiently.
In der EP-B-95 678 wird ein Verfahren zur Ausbildung eines Flüssigkeitsfilmes auf einem Brett beschrieben durch Gießen eines Fließvorhanges aus einem Abgabebehälter.EP-B-95 678 describes a method for forming a liquid film on a board by casting a flow curtain from a dispensing container.
Diese Applikation als einen freifallenden Fließvorhang zeigt einige Nachteile in der praktischen Durchführung. Wird das zu beschichtende Holz mit hoher Geschwindigkeit unter dem Gießfilm durchgefahren, kann es zum Abreißen des Filmes kommen. Auch die gleichmäßige Verteilung über den Brettquerschnitt kann beispielsweise durch Zusammenziehung eingeschränkt sein.This application as a free-falling flow curtain shows some disadvantages in practical implementation. If the wood to be coated is passed under the cast film at high speed, the film may tear off. The even distribution across the board cross-section can also be restricted, for example, by contraction.
In der EP-A-241 891 wird eine Vorrichtung zum Auftragen von Leim auf Holzteile beschrieben, mit deren Hilfe ein Gießfilm mittels eines Leitorganes gebildet wird. Die deutsche Patentanmeldung P 37 12 347.5 sieht für dieses Leitorgan noch Verbesserungen in Form von luftstauverhindernden Einrichtungen vor. Nach beiden Schriften wird Harz und Härter getrennt durch zwei Vorrichtungen aufgetragen.EP-A-241 891 describes a device for applying glue to wooden parts, with the aid of which a cast film is formed by means of a guide element. The German patent application P 37 12 347.5 sees for this lead organ improvements in the form of anti-congestion devices. According to both documents, resin and hardener are applied separately by two devices.
Aufgabe der vorliegenden Erfindung war es, ein Verfahren zum Auftragen von Leim auf die Oberfläche von Holzteilen zu entwickeln, das in einer Stufe einen gleichmäßigen Auftrag eines gebrauchsfertigen Leimes gestattet und das Fehlstellen in Form von nichtbenetzten Flächen bzw. unvollkommener Durchmischung der Harz-Komponenten vermeidet.The object of the present invention was to develop a method for applying glue to the surface of wooden parts, which allows a uniform application of ready-to-use glue in one step and avoids defects in the form of non-wetted surfaces or incomplete mixing of the resin components.
Gelöst wurde die Aufgabe durch einen Auftrag eines gebrauchsfertigen Leimes als Gießfilm mittels eines Leitorgans.The task was solved by applying a ready-to-use glue as a cast film using a guide element.
Gegenstand der vorliegenden Erfindung ist ein Verfahren zum Auftragen eines gebrauchsfertigen Leimes auf die Oberfläche von Holzteilen, mit einem über einen Vorratsbehälter, einen mit einem Leitorgan versehenen Gießkopf, unter dem eine Vorschubeinrichtung für Holzteile angeordnet ist, und über eine Auffangwanne im Kreislauf umlaufend gehaltenen gebrauchsfertigen Leim, wobei man den gebrauchsfertigen Leim als Gießfilm auf die Oberfläche der Holzteile aufträgt.The present invention relates to a method for applying a ready-to-use glue to the surface of wooden parts, with a ready-to-use glue held in circulation in a circuit via a storage container, a pouring head provided with a guide element, under which a feed device for wooden parts is arranged, and a collecting trough , whereby the ready-to-use glue is applied as a cast film to the surface of the wooden parts.
Die zu diesem Verfahren erforderliche Vorrichtung ist bekannt und ist nicht Gegenstand der vorliegenden Erfindung. Sie ist in der deutschen Patentanmeldung P 37 12 347.5 beschrieben und besteht im wesentlichen aus einem Vorratsbehälter, einem als zylindrischer Hohlkörper ausgebildeter, mit Austrittsöffnungen und einem Leitorgan versehenen Gießkopf, einer Vorschubeinrichtung für das zu beschichtende Holz, eine Auffangwanne und der dazugehörigen Ringleitung mit zwei Pumpen. Wesentlich für das Verfahren sind die den Luftstau verhindernden Einrichtungen am Leitorgan des Gießkopfes.The device required for this method is known and is not the subject of the present invention. It is described in German patent application P 37 12 347.5 and essentially consists of a storage container, a pouring head designed as a cylindrical hollow body with outlet openings and a guide element, a feed device for the wood to be coated, a collecting trough and the associated ring line with two pumps . The devices on the guide element of the pouring head that prevent air congestion are essential for the process.
Bei dem erfindungsgemäßen Verfahren wird ein gebrauchsfertiger Leim, d.h. ein Leim, der alle zu seiner Weiterverarbeitung bzw. Aushärtung benötigten Komponenten wie gegebenenfalls Lösungsmittel, Katalysatoren, Härter, Zusatz- und Hilfsstoffe, Füll- und Streckmittel oder deren Gemische enthält, aufgetragen und die nach dem Auftragen überschüssige Menge in einem Auffangbehälter aufgefangen und in den Kreislauf zurückgeführt.In the method according to the invention, a ready-to-use glue, i.e. Apply a glue that contains all the components required for its further processing or curing, such as solvents, catalysts, hardeners, additives and auxiliary substances, fillers and extenders or their mixtures, and the excess amount is collected in a collecting container and applied to the Cycle returned.
Bei einer bevorzugten Ausführungsform wird der gebrauchsfertige Leim auf Temperaturen von 5 bis 30°C, bevorzugt 10 bis 20°C temperiert. Der gebrauchsfertige Leim kann an jeder beliebigen mit Leim benetzten Stelle der Vorrichtung temperiert werden, bevorzugt im Auffangbehälter der Vorrichtung.In a preferred embodiment, the ready-to-use glue is heated to temperatures of 5 to 30 ° C., preferably 10 to 20 ° C. The ready-to-use glue can be tempered at any point on the device wetted with glue, preferably in the collecting container of the device.
Das erfindungsgemäße Verfahren erlaubt den Einsatz von verschiedenartigen flüssigen Leimen, z.B. von Harnstoff-Formaldehyd-, Melamin-Harnstoff-Formaldehyd, Melamin-Harnstoff-Phenol-Formaldehyd, Phenol-Resorcin-Formaldehyd, Resorcin-Formaldehyd, Phenol-Formaldehyd, Polyvinylacetat-Leime, deren Mischungen und weitere in der Holzverarbeitung übliche Leime.The method according to the invention allows the use of various types of liquid glue, e.g. of urea-formaldehyde, melamine-urea-formaldehyde, melamine-urea-phenol-formaldehyde, phenol-resorcinol-formaldehyde, resorcinol-formaldehyde, phenol-formaldehyde, polyvinyl acetate glues, their mixtures and other glues customary in wood processing.
Bevorzugt werden Melamin-Harnstoff-Formaldehyd-Kondensate, Resorcin-Harnstoff-Formaldehyd-Kondensate oder Polyvinylacetat-Leime verwendet.Melamine-urea-formaldehyde condensates, resorcinol-urea-formaldehyde condensates or polyvinyl acetate glues are preferably used.
Die Topfzeit (pot life) wird über eine geeignete Wahl von beispielsweise Härter oder Katalysator so eingestellt, daß eine Verarbeitungszeit von mindestens einer halben, bevorzugt mindestens einer Stunde gewährleistet ist. Die hierfür nötigen Maßnahmen sind allgemein bekannt. So werden beispielsweise bei Leimen auf Basis von Aminoplasten gerade so viel Säure oder säurebildende Verbindungen als Härter eingesetzt, daß während der Verarbeitungszeit die Viskosität des gebrauchsfertigen Leimes nicht über 25.000 mPas steigt.The pot life is adjusted via a suitable choice of, for example, hardener or catalyst so that a processing time of at least half an hour, preferably at least one hour, is ensured. The measures required for this are generally known. For example, in the case of glues based on aminoplasts, just enough acid or acid-forming compounds are used as hardeners that the viscosity of the ready-to-use glue does not exceed 25,000 mPas during the processing time.
Bei Leimen auf Phenoplast-Basis werden entsprechend Formaldehyd oder formaldehydbildende Verbindungen als Härter verwendet.For phenolic-based glues, formaldehyde or formaldehyde-forming compounds are used as hardeners.
Bei anderen Leim-Systemen, bei denen die Härtung nicht chemisch sondern physikalisch erfolgt, wie beispielsweise durch Lösungsmittelverdunstung, ist der Viskositätsanstieg während der Verarbeitungszeit vernachlässigbar.In the case of other glue systems in which the curing takes place physically rather than chemically, such as by solvent evaporation, the increase in viscosity during the processing time is negligible.
Die gebrauchsfertigen Leime sind sowohl in thixotropen wie auch in nichtthixotropen Einstellungen verwendbar. Die thixotropen Einstellungen enthalten übliche Thixotropiermittel wie Silikate.The ready-to-use glues can be used in both thixotropic and non-thixotropic settings. The thixotropic settings contain common thixotropic agents such as silicates.
Weiterhin können im gebrauchsfertigen Leim noch übliche Zusatz- und Hilfsstoffe wie Füll- und Streckmittel, beispielsweise Getreide- oder Leguminose-Mehle in Mengen bis zu 50 Gew.%, bezogen auf Feststoff des gebrauchsfertigen Leimes enthalten sein.Furthermore, customary additives and auxiliaries such as fillers and extenders, for example cereal or leguminous flours, can also be present in the ready-to-use glue in amounts of up to 50% by weight, based on the solids of the ready-to-use glue.
Die Verarbeitungs-Viskosität des gebrauchsfertigen Leimes beträgt bei 20°C 250 bis 12000, bevorzugt 1000 bis 10000 mPa·s.The processing viscosity of the ready-to-use glue is 250 to 12000, preferably 1000 to 10000 mPa · s at 20 ° C.
Die Vorschubgeschwindigkeit des Holzes, das unter dem Leimfilm hindurchläuft, beträgt 0,5 bis 4 m/s, bevorzugt 1,5 bis 3 m/s.The feed rate of the wood that runs under the glue film is 0.5 to 4 m / s, preferably 1.5 to 3 m / s.
Der Auftrag des gebrauchsfertigen Leimes beträgt dabei 80 bis 600 g/m², bevorzugt 300 bis 500 g/m².The application of the ready-to-use glue is 80 to 600 g / m², preferably 300 to 500 g / m².
Nach dem erfindungsgemäßen Verfahren werden Holzteile mit einer gleichmäßigen Leimschicht erhalten. Diese kann nach Aushärtung als Oberflächenvergütung dienen oder die beleimten Holzteile können zur Herstellung von lamellierten Holzwerkstoffen oder Brettschichtholz verwendet werden.Wooden parts with a uniform layer of glue are obtained by the process according to the invention. After hardening, this can serve as a surface treatment or the glued wood parts can be used to produce laminated wood materials or glulam.
Das erfindungsgemäße Verfahren wurde erprobt in Verleimungsversuchen mit Buchenholz-Probestücken vom Format 150 x 300 mm.The method according to the invention was tested in gluing tests with beech wood specimens of 150 x 300 mm format.
Ein Phenol-Resorcin-Formaldehyd-Kondensationsprodukt im Molverhältnis Phenol : Resorcin : Formaldehyd von ungefähr 1:0,8:1, mit einem Trockengehalt von 50+1 % (2 h/120°C) und einer Viskosität bei 20°C von ca. 50 mPa·s wurde mit einem Pulverhärter, der ca. 25 Gew.% Paraformaldehyd sowie ca. 70 Gew.% organische und anorganische Füllstoffe enthielt, im Verhältnis 100:25 Gew.-Teile (Leim : Härter) gemischt. Diese Leimflotte (Viskosität ca. 1800 mPa·s) wurde in Form eines Gießfilms mit einem Auftrag von ca. 400 g/m² bei 20°C auf die Holzprobestücke aufgebracht.A phenol-resorcinol-formaldehyde condensation product in a molar ratio of phenol: resorcinol: formaldehyde of approximately 1: 0.8: 1, with a dry content of 50 + 1% (2 h / 120 ° C) and a viscosity at 20 ° C of approx 50 mPa · s was mixed with a powder hardener, which contained approximately 25% by weight of paraformaldehyde and approximately 70% by weight of organic and inorganic fillers, in a ratio of 100: 25 parts by weight (glue: hardener). This glue liquor (viscosity approx. 1800 mPa · s) was applied to the wood test pieces in the form of a cast film with an application of approx. 400 g / m² at 20 ° C.
Unmittelbar danach wurden nicht beleimte Probestücke auf die beleimten aufgelegt und mit einem Druck von ca. 8 N/mm² verpreßt. Die Probestücke wurden im Normklima (20°C/65 % rel. Luftfeuchtigkeit) 24 h unter Preßdruck gelagert.Immediately afterwards, non-glued test pieces were placed on the glued ones and pressed with a pressure of approx. 8 N / mm². The test pieces were stored in a standard atmosphere (20 ° C./65% relative atmospheric humidity) for 24 hours under pressure.
Nach Herstellung von Einzelprüfkörpern aus diesen verleimten Probestücken gemäß DIN 53 254, Abschn. 5, wurden die Bindefestigkeiten bei Raumklima sowie wechselnden Klimabedingungen gemäß DIN 68 141 in Verbindung mit DIN 53 254 ermittelt. Die normmäßig geforderten Mindestbindefestigkeiten wurden in allen Fällen erreicht bzw. überschritten.After producing individual test specimens from these glued specimens in accordance with DIN 53 254, Section 5, the bond strengths in the indoor climate and changing climatic conditions in accordance with DIN 68 141 in connection with DIN 53 254 were determined. The minimum binding strengths required by standards were achieved or exceeded in all cases.
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3834027A DE3834027A1 (en) | 1988-10-06 | 1988-10-06 | METHOD FOR APPLYING A READY-TO-USE GLUE TO THE SURFACE OF WOODEN PARTS |
| DE3834027 | 1988-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0366944A1 true EP0366944A1 (en) | 1990-05-09 |
Family
ID=6364525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89118172A Withdrawn EP0366944A1 (en) | 1988-10-06 | 1989-09-30 | Method for applying a ready to be used glue to the suface of wooden parts |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0366944A1 (en) |
| DE (1) | DE3834027A1 (en) |
| DK (1) | DK490889A (en) |
| FI (1) | FI894301L (en) |
| NO (1) | NO893971L (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6458417B2 (en) | 2000-07-07 | 2002-10-01 | Akzo Nobel N.V. | Method of gluing |
| WO2003095105A1 (en) * | 2002-05-07 | 2003-11-20 | Basf Aktiengesellschaft | Method and device for applying glue and hardening constituents |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2658840A (en) * | 1950-07-18 | 1953-11-10 | Agrashell Inc | Process for the manufacture of laminates |
| EP0095678A2 (en) * | 1982-05-29 | 1983-12-07 | BASF Aktiengesellschaft | Process for the production of a glue film and a hardener film, and device for carrying out the process |
| EP0241891A2 (en) * | 1986-04-17 | 1987-10-21 | BASF Aktiengesellschaft | Apparatus for applying glue to wooden parts |
-
1988
- 1988-10-06 DE DE3834027A patent/DE3834027A1/en not_active Withdrawn
-
1989
- 1989-09-12 FI FI894301A patent/FI894301L/en not_active Application Discontinuation
- 1989-09-30 EP EP89118172A patent/EP0366944A1/en not_active Withdrawn
- 1989-10-05 DK DK490889A patent/DK490889A/en not_active Application Discontinuation
- 1989-10-05 NO NO89893971A patent/NO893971L/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2658840A (en) * | 1950-07-18 | 1953-11-10 | Agrashell Inc | Process for the manufacture of laminates |
| EP0095678A2 (en) * | 1982-05-29 | 1983-12-07 | BASF Aktiengesellschaft | Process for the production of a glue film and a hardener film, and device for carrying out the process |
| EP0241891A2 (en) * | 1986-04-17 | 1987-10-21 | BASF Aktiengesellschaft | Apparatus for applying glue to wooden parts |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6458417B2 (en) | 2000-07-07 | 2002-10-01 | Akzo Nobel N.V. | Method of gluing |
| WO2003095105A1 (en) * | 2002-05-07 | 2003-11-20 | Basf Aktiengesellschaft | Method and device for applying glue and hardening constituents |
Also Published As
| Publication number | Publication date |
|---|---|
| NO893971D0 (en) | 1989-10-05 |
| NO893971L (en) | 1990-04-09 |
| DK490889D0 (en) | 1989-10-05 |
| DK490889A (en) | 1990-04-07 |
| FI894301A0 (en) | 1989-09-12 |
| FI894301A7 (en) | 1990-04-07 |
| FI894301L (en) | 1990-04-07 |
| DE3834027A1 (en) | 1990-04-12 |
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