DE879748C - Process for the production of bodies, in particular plates, from starting materials to be bonded in an electrical capacitor field - Google Patents
Process for the production of bodies, in particular plates, from starting materials to be bonded in an electrical capacitor fieldInfo
- Publication number
- DE879748C DE879748C DEP28965A DEP0028965A DE879748C DE 879748 C DE879748 C DE 879748C DE P28965 A DEP28965 A DE P28965A DE P0028965 A DEP0028965 A DE P0028965A DE 879748 C DE879748 C DE 879748C
- Authority
- DE
- Germany
- Prior art keywords
- pairs
- plates
- electrodes
- electrode
- bonded
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title description 6
- 238000000034 method Methods 0.000 title description 6
- 239000007858 starting material Substances 0.000 title description 5
- 239000003990 capacitor Substances 0.000 title description 3
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 210000001503 Joints Anatomy 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 238000004026 adhesive bonding Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007799 cork Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910000939 field's metal Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000002381 testicular Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
Description
Verfahren zur Herstellung von Körpern, insbesondere Platten1 aus zu verklebenden Ausgangsstoffen im elektrischen Kondensatorfeld Es ist bekannt. für die Verleimung von Holzplatten zu Sperrholz sowie für das Aufleimen von Furnieren hochfrequente Ströme zu verwenden, indem man die zu verleimenden Schichten zwischen Aletallplatten preßt, die an hochfrequente Spannung gelegt werden. Infolge der Verluste durch den Verschiehungsstrom in Holz und Leim erwärmt sich das als Dielektrikum wirkende Holz um so stärker. je größer seine elektrische (Ohmsche) Leitfähigkeit ist, also je feuchter es ist. Hol und Leim werden daher von innen heraus getrocknet. Diese Trocknnng muß hei einem gewissen WIindestgehalt an Feuchtigkeit unterbrochen werden. damit das Holz nicht reißt. Die bekannte Hodfrequenzverleimung., die sich für alle Klebstoffarten eignet, die durch Wäre allein oder durch Wärme und Druck in den Endzustand übergeführt werden, hat den Nachteil, daß besonders bei der Herstellung großer Platten die Elektroden zu groß und zu teuer werden, die Spannung zu klein wird und der Strom unwirtschaftlich anwächst, dazu Randwi rknngen auftreten, die eine ungleichmäßige Verteilung des Stromes verursachen. Daher muß man große Platten mittels kleinerer Elektroden heizen, die zeitlich nacheinander jeweils auf benachbarte Zonen der Platte aufgepreßt werden, was aber wegen der noch ungleichmäßigeren Wirkung nicht befriedigen kann.Process for the production of bodies, in particular panels 1 from to adhesive starting materials in the electrical capacitor field It is known. for the gluing of wooden panels to plywood as well as for the gluing of veneers to use high frequency currents by placing the layers to be glued between Presses all-metal plates that are connected to high-frequency voltage. As a result of the losses as a dielectric, it heats up as a result of the entrainment flow in the wood and glue the stronger the wood. the greater its electrical (ohmic) conductivity is, so the wetter it is. Hol and glue are therefore dried from the inside out. This drying must be interrupted at a certain minimum moisture content will. so that the wood does not crack. The well-known testicular frequency gluing Suitable for all types of adhesive that are produced by heat alone or by heat and pressure be converted into the final state, has the disadvantage that especially during manufacture large plates the electrodes become too big and too expensive, the voltage too small and the current grows uneconomically, marginal effects occur that cause an uneven distribution of the current. So you have to have big panels heat by means of smaller electrodes, one after the other on neighboring electrodes Zones of the plate are pressed, but what because of the even more uneven effect can not satisfy.
Es ist nun ferner bekannt, größere Platten im Fließverfahren kontinuierlich zu beheizen, jedoch wurde bisher lediglich die Dampfheizung hierfür verwendet, indem die zu verleimenden Holzschichten langsam im Schrittschaltverfahren zwischen zwei mit Dampf durchströmten Gruppen von Längsschienen Ihindurchbewegt wurden. Diese Heizungsart hat aber kein befriedigendes Er-gebnis gezeitigt, weil dabei infolge der Heizung von außen die Durchwärmung des Gutes nur langsam vor sich geht und weil ferner infolge der raschen Austrocknung der Außenschichten eine gleichmäßige Verleimung ausgeschlossen ist. It is now also known to flow larger panels continuously to heat, but so far only steam heating has been used for this by the wood layers to be glued slowly in a step-by-step process between two Groups of longitudinal rails through which steam flowed through were moved. These However, the type of heating did not produce a satisfactory result because it was a consequence the heating from the outside, the heating of the goods is slow and because Furthermore, due to the rapid drying of the outer layers, uniform gluing is excluded.
Nach ruder Erfindung wird daher die HocEhfrequenzerhitzung des unter Druck stehenden Ausgangsstoffes - im Fließverfahren angewendet und der zu verklebende Ausgangsstoff mitsamt seinem Bindemittel in stetigem Fluß zwischen den unter Druck stehenden Hochfrequenzelektroden hindurchgeführt. According to the invention, therefore, the high frequency heating of the under Pressurized starting material - applied in the flow process and the one to be bonded Starting material together with its binding agent in constant flow between the pressurized standing high-frequency electrodes passed through.
Zweckmäßig wird dabei das Preßgut zwischen Walzen oder zwischen mit metallbewehrten Preßleisten versehenen Ketten weiterbewegt, deren Ausfüihrung je nach tden zu verklebenden Rohstoffen verschiedenartig gestaltet sein kann. The material to be pressed is expediently between rollers or between with metal-reinforced pressure strips provided chains moved on, their execution depending can be designed in various ways according to the raw materials to be bonded.
Die Hochfrequenzverleimung bietet noch den besonderen Vorteil der stufenweisen Anwendung, indem man in einer Vorstufe hocherhitzt, um Feuchtigkeit aus dem Holz und Lösungsmittel aus dem Leim auszutreiben und dann in einer Hauptstufe schwächer erwärmt, um die Trocknung zu vollenden und den Leim in den Endzustand überzuführen. The high-frequency gluing also offers the special advantage of Gradual application by being heated in a preliminary stage to moisture to drive off the wood and solvent from the glue and then in a main stage warmed weaker to complete the drying and the glue in the final state convict.
Nötigenfalls kann noch eine dritte Stufe angefügt werden, in der eine Nachtrocknung stattfindet. Die Stärke ,der Erhitzung kann durch verschiedene Spannung oder Frequenz an den hintereinanderfolgenden Elektrodenpaaren erreicht werden. Bei gleicher Frequenz kann man auchldie Spannung an den Elektrodenpaaren dadurch verschieden machen, daß man je zwei Elektrodenpaare ungleicher Fläche in Reihe schaltet. Selbstverständlich kann man auch Spannung, Frequenz und gegebenenfalls Elektrodenfläche gleichzeitig variieren.If necessary, a third level can be added in the one Post-drying takes place. The strength of the heating can be due to different tension or frequency can be achieved at the successive pairs of electrodes. at With the same frequency, the voltage on the electrode pairs can also be different make that you connect two pairs of electrodes of unequal area in series. Of course voltage, frequency and, if necessary, electrode area can also be used at the same time vary.
Will man die zur Fortbewegung verwendeten Teile sämtlich auf Erdpotential halten, so kann man zwischen zwei gleichzeitig henzustellenden Gutplatten eine sie trennende Elektrodenplatte mitführen an die das Hochspannungspotential angeschlossen wird. Die am Fließbewegungsantrieb angebrachten und angepreßten Elektroden liegen dann beide an Erde. If you want all of the parts used for locomotion to be at earth potential hold, you can hold one between two good plates to be henzustellenden at the same time Carry out a separating electrode plate to which the high-voltage potential is connected will. The electrodes attached and pressed on to the flow motion drive are lying then both to earth.
Nach dem neuen Verfahren lassen sich Sperrholzplatten und furnierte Holzplatten, ferner Türen und sonstige Platten nach dem Prinzip des beidseits plattenbedeckten Holzgitters herstellen; ferner Hetzerbalken und furnierte Parkettbodenplatten; ferner Hölzer mit Faserstoffzwischenlagen, aufeinanderzuleimende Faserstoffplatten, zu vereinigende Kunststoffplatten aus gleichen oder verschiedenen Kunststofflagen sowie solche mit Zwischenlagen irgendwelcher Art; auch Glasplatten mit durchsichtigen oder farbigen plastischen Kunststoffzwischenlagen; schließlich können auch Platten aus Lockergut gemischt mit Leim, Kunstharz oder sonstigem Bindemittel verfertigt werden, wobei das Lockergut organischer oder anorganischer Natur, staubförmig oder grob, körnig oder faserig sein kann. Beispielsweise eignet sich das Verfahren nach der Erfindung auch zur Herstellung von dicken Pappen, Hartpapieren, von Linoleum, von Papierfaser-, Kork- und Torfplatten usw., wie sie für die Wärmeisolation von Behältern, Gebäuden u. dgl. verwendet werden. According to the new process, plywood panels and veneered Wooden panels, also doors and other panels based on the principle of panel-covered on both sides Manufacture wooden lattice; furthermore agitation bars and veneered parquet floor panels; further Timber with fiber interlayers, fiber panels to be glued to one another unifying plastic sheets made of the same or different plastic layers as well those with intermediate layers of any kind; also glass plates with clear ones or colored plastic plastic liners; Finally, plates can also be used made of loose material mixed with glue, synthetic resin or other binding agent be, with the loose material of organic or inorganic nature, dusty or can be coarse, grainy, or fibrous. For example, the method is suitable of the invention also for the production of thick cardboard, hard paper, linoleum, of paper fiber, cork and peat boards, etc., such as those used for thermal insulation of Containers, buildings and the like. Can be used.
Will man mehrere Platten zu einer größeren Platte vereinigen, so lassen sich auch die Stoßfugen vorteilhaft gemäß der Erfindung nach dem Hochfrequenzverfahren vereinigen. Das gleiche gilt auch für die Vereinigung mehrerer Balken in Richtung ilhrer Breite und i!hrer Höhe. If you want to combine several plates into one larger plate, see this the butt joints can also be advantageously made according to the invention using the high-frequency method unite. The same applies to the union of several bars in direction their width and their height.
PATENTANSPPTUCHE: I. Verfahren zur Herstellung von Körpern, insbesondere Platten, aus zu verklebenden Ausgangsstoffen im elektrischen Kondensatorfeld durch beidseitfges Anpressen von mit Hochfrequenzspannung gespeisten Metallelektroden an Idie zu verklebenden Teile, dadurch gekennzeichnet, daß der zu verklebende Ausgangsstoff mitsamt seinem Bindemittel in stetigem Fluß zwischen den unter Druck stehenden Hochfrequenzelektro den hindurchgeführt wird. PATENT APPLICATIONS: I. Process for the production of bodies, in particular Plates, made of raw materials to be bonded, in the electric capacitor field Metal electrodes fed with high-frequency voltage are pressed against both sides to the parts to be glued, characterized in that the starting material to be glued together with its binding agent in constant flow between the pressurized high-frequency electro which is passed through.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE879748C true DE879748C (en) | 1953-06-15 |
Family
ID=586649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP28965A Expired DE879748C (en) | 1949-01-01 | Process for the production of bodies, in particular plates, from starting materials to be bonded in an electrical capacitor field |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE879748C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19919823B4 (en) * | 1999-05-01 | 2015-01-22 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Method for bonding plywood or LVL boards |
-
1949
- 1949-01-01 DE DEP28965A patent/DE879748C/en not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19919823B4 (en) * | 1999-05-01 | 2015-01-22 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Method for bonding plywood or LVL boards |
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