DE2456061A1 - Glueing wood workpieces - using micro-encapsulated glue constituent activated by heat and pressure - Google Patents
Glueing wood workpieces - using micro-encapsulated glue constituent activated by heat and pressureInfo
- Publication number
- DE2456061A1 DE2456061A1 DE19742456061 DE2456061A DE2456061A1 DE 2456061 A1 DE2456061 A1 DE 2456061A1 DE 19742456061 DE19742456061 DE 19742456061 DE 2456061 A DE2456061 A DE 2456061A DE 2456061 A1 DE2456061 A1 DE 2456061A1
- Authority
- DE
- Germany
- Prior art keywords
- glue
- hardener
- gluing
- heat
- pressure
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J201/00—Adhesives based on unspecified macromolecular compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
Verfahren zur Holzverleimung Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Verleimen gleicher oder verschiedenartiger Materialien untereinander, unter Verwendung von mindestens zwei aus Binder und Härter bestehender miteinander reagierender Leimkomponenten in Warm- und/oder Ealtverpressung. Method of Gluing Wood The present invention relates a process for gluing the same or different materials together, using at least two of the binder and hardener together more responsive Glue components in hot and / or old pressing.
Insbesondere bei der Holzverleimung, also bei Furnierarbeiten usw. ist für sauberes und rationelles Arbeiten die Gebrauchsdauer, also die Zeitspanne zwischen der Herstellung der aus Härter und Leimstreckmittel-Gemisch bestehenden Leimflotte und dem Zeitpunkt, von dem ab der Leimansatz sich infolge innerer Reaktion und Wasserverdunstung nicht mehr auftragen läßt, von entscheidender Bedeutung.Especially when gluing wood, i.e. when doing veneer work, etc. is the service life, i.e. the period of time, for clean and efficient work between the production of the mixture consisting of hardener and glue extender Glue liquor and the point in time from which the glue build-up changes as a result of an internal reaction and no longer allows water evaporation to appear, of crucial importance.
Da die Gebrauchsdauer eines Beimansatzes im wesentlichen von seiner Zusammensetzung und auch von der Verarbeitungstemperatur abhängt und von der Gebrauchsdauer wiederum Wartezeiten, Einlegezeiten und Preßzeiten abhängig sind, wäre stets eine lange Gebrauchsdauer und eine kurze Preßzeit erwünscht. Der Verkumzung der Ereßzeit durch Verwendung schneller wirkender, also aggressiver Härter sind aber dadurch Grenzen gesetzt, da zugleich mit der Verkürzung dieser Zeit die Gebrauchsdauer der Leimflotte, die Einlegezeiten u.v.a.m verkürze werden.Since the service life of a while approach essentially depends on its Composition and also depends on the processing temperature and on the service life in turn, waiting times, insertion times and pressing times are dependent, would always be one long service life and a short pressing time are desirable. The shortening of the erection period through the use of faster-acting, i.e. more aggressive hardeners, however Limits are set, as the service life of the Glue liquor, the insertion times and much more will be shortened.
Aufgabe der vorliegenden Erfindung ist daher die Schaffung eines Verleimungsverfahrens mit theoretisch unendlicher Gebrauchsdauer der Leimflotte.The object of the present invention is therefore to create a gluing process with theoretically infinite service life of the glue liquor.
Dazu wird erfindungsgemäß vorgeschlagen, daß der Härter in mikroverkapselter Form mit dem Leim in Kontakt gebracht und erst durch den Preßdruck und/oder Wärmeeinwirkung aktiviert wird.For this purpose it is proposed according to the invention that the hardener be in microencapsulated Form brought into contact with the glue and only through the pressing pressure and / or the action of heat is activated.
Diesem erfindungsgemäßen Verfahren liegt dabei die tYberlegung zugrunde, die durch den Härter bedingte innere Reaktion der Leimflotte erst dann in Gang zu setzen, wenn das Auftragen der Komponenten bzw. der Mischung beendet ist und der Preßvorgang, kalt oder warm, begonnen hat. Das Mikroverkapseln eines pulverförmigen oder flüssigen Stoffes ist heute technisch in relativ einfacher Weise möglich und setzt somit die Wirtschaftlichkeit der Verfahrensanwendung nicht herab. Denkbar, jedoch weniger rationell, wäre auch die Mikroverkapselung des Binders.This method according to the invention is based on the consideration that the internal reaction of the glue liquor caused by the hardener only then starts set when the application of the components or the mixture is finished and the Pressing process, cold or warm, has started. The microencapsulation of a powdery or liquid substance is technically possible today and in a relatively simple manner thus does not reduce the economic efficiency of the process application. Conceivable, however, the microencapsulation of the binder would also be less efficient.
Die Durchführung dieses Verleimungsverfahrens kann dabei, wie bisher üblich, in der Weise erfolgen, daß der Härter erst vor Beginn der Verleimungsarbeiten in' den Leimansatz eingebracht, oder aber Leim und Härter, letzterer ggf. durch seinen mikroverkapselten Zustand bedingt, in einem zusätzlichen Haft- oder Trägermittel eingelagert, getrennt auf die zu verleimenden Materialien aufgetragen wird.This gluing process can be carried out as before Usually done in such a way that the hardener only before the start of the gluing work introduced into 'the glue batch, or glue and hardener, the latter possibly through due to its microencapsulated state, in an additional adhesive or carrier stored, applied separately to the materials to be glued.
Darüber hinaus ist es denkbar, inSbesondere bei Furnierarbeiten bzw. der Verleimung von Papier- oder Kunststofffolienmit einem lrägermaterial diese'Furniere oder Folien bereits mit dem mikroverkapselten Härter vorabbeschichtet auf Lager zu haben. is ist dann nur noch das Trägermaterial -oder die Folie - in üblicher Weise und mit den bislang üblichen Maschinen oder Vorrichtungen mit dem Leimauftrag zu versehen, da die Reaktion erst eintritt unter der nachfolgenden Pressung und/oder 6rwärmung.In addition, it is conceivable, in particular for veneer work or the gluing of paper or plastic foils with a carrier material, these 'veneers or foils already pre-coated with the microencapsulated hardener in stock to have. Is then only the carrier material - or the film - in the usual way Way and with the usual machines or devices with the glue application to be provided, since the reaction only occurs under the subsequent pressing and / or 6rheating.
Das erfindungsgemäße Verfahren, das somit kürzeste Preßseiten durch die köglichkeit der Verwendung hochaggressiver Härter, bei gleichzeitig theoretisch unendlicher Gebrauchsdauer der Leimflotte ergibt, schafft darüber hinaus auch die Möglichkeit, in ihrem Ausgangszustand flüssige, pulver-, granulat- oder filmförmige Leime in der Art auf den Markt zu bringens daß der Härter bereits fabrikmäßig eingelagert ist und je nach Verleimungsart u.U. nur noch Streckmittel- und Verdünnungswasserzugabe vor Verarbeitungsbeginn erforderlich sind.The inventive method, thus the shortest press sides through the possibility of using highly aggressive hardeners, at the same time theoretically infinite service life of the glue liquor also creates the Possibility of liquid, powder, granulate or film form in their initial state To bring glues onto the market in such a way that the hardener is already stored in the factory and, depending on the type of gluing, may only require the addition of extender and thinning water are required before processing begins.
In der beigefügten Zeichnung ist die Verfahrensanwendung schematisch dargestellt.The application of the method is shown schematically in the attached drawing shown.
Fig. 1 zeigt dabei den separat erfolgten Leimauftrag 1 auf das Trägermaterial 2 und den aufgetragenen Härter 3, ggf. mit einem Trägermittel 4 auf das Furnier 5. Fig. 1 shows the separately applied glue 1 on the carrier material 2 and the applied hardener 3, if necessary with a carrier 4 on the veneer 5.
Fig. 2 deutet an, die Verwendung mittels mikroverkapseltem Härters 3 unmittelbar vorabbeschichteter Furniere oder Folien 5 und Fig. 3 soll die Verwendung eines leimes 6 veranschaulichen, in dem der Härter 3, ebenfalls mikroverkapselt, bereits ab Herstellerwerk enthalten ist. Fig. 2 indicates the use by means of a microencapsulated hardener 3 immediately pre-coated veneers or foils 5 and FIG. 3 is intended to be used of a glue 6, in which the hardener 3, also microencapsulated, is already included in the factory.
Aktivierung erfolgt bei allen drei Systemen erst durch den Preßdruck und/oder die Wärmeeinwirkung, symbolisiert durch die Pfeile 7, durch Zerstörung der Mikrokapseln unter dieser Einwirkung.Activation takes place in all three systems only through the pressing pressure and / or the effect of heat, symbolized by the arrows 7, by destruction of the microcapsules under this action.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742456061 DE2456061A1 (en) | 1974-11-27 | 1974-11-27 | Glueing wood workpieces - using micro-encapsulated glue constituent activated by heat and pressure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742456061 DE2456061A1 (en) | 1974-11-27 | 1974-11-27 | Glueing wood workpieces - using micro-encapsulated glue constituent activated by heat and pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2456061A1 true DE2456061A1 (en) | 1976-08-12 |
Family
ID=5931844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19742456061 Pending DE2456061A1 (en) | 1974-11-27 | 1974-11-27 | Glueing wood workpieces - using micro-encapsulated glue constituent activated by heat and pressure |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2456061A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0278582A2 (en) * | 1987-02-11 | 1988-08-17 | Coöperatieve Verkoop- en Productievereniging van Aardappelmeel en Derivaten 'AVEBE' B.A. | A process for waterproofing starch binders |
DE3742652A1 (en) * | 1986-11-14 | 1989-07-13 | Held Kurt | Process and apparatus for the production of wood material boards |
DE102007021800A1 (en) * | 2007-05-07 | 2008-11-13 | Thyssenkrupp Steel Ag | Production of composite component useful in vehicle, ship/aircraft construction, comprises connecting second metal sheet to first metal sheet of the component, including adhesive between both sheets, and togetherly transforming the sheets |
-
1974
- 1974-11-27 DE DE19742456061 patent/DE2456061A1/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3742652A1 (en) * | 1986-11-14 | 1989-07-13 | Held Kurt | Process and apparatus for the production of wood material boards |
EP0278582A2 (en) * | 1987-02-11 | 1988-08-17 | Coöperatieve Verkoop- en Productievereniging van Aardappelmeel en Derivaten 'AVEBE' B.A. | A process for waterproofing starch binders |
EP0278582A3 (en) * | 1987-02-11 | 1988-10-05 | Coöperatieve Verkoop- en Productievereniging van Aardappelmeel en Derivaten 'AVEBE' B.A. | A process for waterproofing starch binders |
DE102007021800A1 (en) * | 2007-05-07 | 2008-11-13 | Thyssenkrupp Steel Ag | Production of composite component useful in vehicle, ship/aircraft construction, comprises connecting second metal sheet to first metal sheet of the component, including adhesive between both sheets, and togetherly transforming the sheets |
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