DE2757628C2 - Device for welding or embossing thermoplastic foils - Google Patents
Device for welding or embossing thermoplastic foilsInfo
- Publication number
- DE2757628C2 DE2757628C2 DE2757628A DE2757628A DE2757628C2 DE 2757628 C2 DE2757628 C2 DE 2757628C2 DE 2757628 A DE2757628 A DE 2757628A DE 2757628 A DE2757628 A DE 2757628A DE 2757628 C2 DE2757628 C2 DE 2757628C2
- Authority
- DE
- Germany
- Prior art keywords
- welding
- foils
- counter tool
- conveyor belt
- embossing
- 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
- 238000003466 welding Methods 0.000 title claims description 34
- 239000011888 foil Substances 0.000 title claims description 15
- 238000004049 embossing Methods 0.000 title claims description 8
- 229920001169 thermoplastic Polymers 0.000 title claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 title claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000008646 thermal stress 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
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
-
- 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
- B29C65/022—Particular heating or welding methods not otherwise provided for
- B29C65/028—Particular heating or welding methods not otherwise provided for making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined
-
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
- B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
-
- 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
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
- B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
- B29C65/7441—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc for making welds and cuts of other than simple rectilinear form
-
- 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
- B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
- B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
- B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
-
- 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- 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
- B29C66/43—Joining a relatively small portion of the surface of said 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Die Erfindung bezieht sich auf eine Vorrichtung zum Verschweißen oder Prägen von thermoplastischen Folien mit einer beheizbaren, aus einem Schweiß- und Gegenwerkzeug bestehenden Schweißvorrichtung, die eine der gewünschten Schweiß- oder Prägekontur entsprechende Profilierung aufweist, und einem durch die Schweißvorrichtung geführten wärmeleitfähigen Transportband, auf dem den Folien die zu ihrer Plastifizierung erforderliche thermische Energie zuleitbar ist und von dem die Folien nach einer Abkühlstrecke abnehmbar sind.The invention relates to a device for welding or embossing thermoplastics Foils with a heatable welding device consisting of a welding and counter tool, which has a profile corresponding to the desired welding or embossing contour, and one through the welding device guided thermally conductive conveyor belt on which the foils are attached to their Plasticization required thermal energy can be fed and from which the films after a cooling section are removable.
Bei einer derartigen bekannten Vorrichtung (DE-OS 26 23 005 und FR-PS 10 74 659) ist sowohl das Schweißais auch das Gegenwerkzeug mit der der Schweißkontor entsprechenden Profilierung versehen und auf Schweißtemperatur aufgeheizt.In such a known device (DE-OS 26 23 005 and FR-PS 10 74 659) is both the welding relay also provide the counter tool with the profiling corresponding to the welding contour and open it Welding temperature heated up.
Ferner ist zusätzlich zu dem die zu verschweißenden Folien tragenden Transportband ein auf diesen Folien aufliegendes weiteres Transportband durch die Schweißvorrichtung hindurchgeführt, so daß sowohl das Schweiß- als auch das Gegenwerkzeug durch das jeweils gegenüberliegende Transportband hindurch auf die Folien einwirkt. Bei dieser bekannten Vorrichtung erweist es sich als nachteilhaft, daß das auf die S.;hweißtemperatur erhitzte Schweiß- und Gegenwerkzeug mit seiner Profilierung auf das jeweilige Transportband einwirkt und dadurch eine hohe Beanspruchung und demzufolge ein hoher Verschleiß dieser Transportbänder hervorgerufen wird. Außerdem erfordern die beiden parallel zueinander geführten Transportbänder einen verhältnismäßig hohen baulichen Aufwand.Furthermore, in addition to the conveyor belt carrying the foils to be welded, there is a conveyor belt on these foils lying further conveyor belt passed through the welding device, so that both the Welding tool as well as the counter tool through the respective opposite conveyor belt acts on the foils. In this known device, it proves to be disadvantageous that the S.; Heated welding tool and counter tool with its profile on the respective conveyor belt acts and thus a high level of stress and consequently a high level of wear and tear on these conveyor belts is caused. In addition, the two parallel conveyor belts require a relatively high structural effort.
Der wesentliche Nachteil dieser bekannten Vorrichtung besteht jedoch darin, daß wegen des Einschlusses der Folien zwischen den beiden Transportbändern nur eine beschränkte Anzahl von Nahtformen möglich ist. Die Herstellung von Prägungen sowie der Einsatz von aus der Hochfrequenz-Schweißtechnik bekannten Schneidelektrode!!, die ein Ausreißen der geschweißten Teile aus den Folienbahnen unmittelbar neben der Schweißnaht gestatten, ist bei der bekannten Vorrichtung nicht möglich.The main disadvantage of this known device, however, is that because of the inclusion of the foils between the two conveyor belts, only a limited number of seam shapes is possible. The production of embossing as well as the use of known from high-frequency welding technology Cutting electrode !!, which allows the welded parts to be torn out of the foil strips immediately next to Allow weld seam is not possible with the known device.
Es ist auch eine Vorrichtung zum Schweißen von thcrmoolastischen Folien bekannt (DE-OS 22 44 820).There is also a device for welding thermoolastic foils known (DE-OS 22 44 820).
bei der die zu verschweißenden Folien ohne jedes Transportband unmittelbar zwischen zwei einander gegenüberstehenden Schweißwerkzeugen, von denen das eine beheizt und das andere unbeheizt ist, hindurchführbar sind. Um dennoch einen ungestörten Vorschub der zu verschweißenden Folien zwischen den Schweißwerkzeugen zu ermöglichen, ist bei dieser bekannten Vorrichtung wenigstens eines der beiden Schweißwerkzeuge schwingend ausgebildet, so daßin which the foils to be welded are directly between two without any conveyor belt opposing welding tools, one of which is heated and the other is unheated, are passable. In order to ensure an undisturbed advance of the foils to be welded between the To enable welding tools is at least one of the two in this known device Welding tools designed to swing so that
ίο hierdurch der Berührungsdruck zwischen den beiden Schweißwerkzeugen periodisch verringert und hierdurch der Vorschub der Folien erleichtert ist Jedoch ist der damit verbundene bauliche Aufwand groß sowie auch die Berührungszeit zwischen den Folien und den Schweißwerkzeugen in Folge der periodischen Druckentlastung verringertίο thereby the contact pressure between the two Welding tools periodically reduced and thereby the advance of the foils is facilitated the associated structural effort is great as well as the contact time between the foils and the Welding tools reduced as a result of the periodic pressure relief
Schließlich ist auch eine Presse zum Aufsiegeln einer thermoplastischen Folie auf eine Werkstoffschicht wie ein textiles Gewebe bekannt (DE-OS 14 79 137), bei der eine mit einem nachgiebigen, wärmebeständigen Material beschichtete, unbeheizte, feststehende untere Preßplatte vorgesehen ist auf die eine mit einer glatten, beheizten Preßfläche versehene obere Preßplatte unter Druck aufsetzbar ist Zur Durchführung der Wärmevei siegelung wird bei dieser bekannten Presse die Werkstoffschicht zusammen mit der darauf aufgelegten thermoplastischen Folie auf die untere Preßplatte aufgebracht und sodann die obere Preßplatte dagegengepreßt und beheizt Der Öffnungsvorgang der beiden gegeneinandergedrückten Preßplatten nach Beendigung der erforderlichen Versiegelungsdauer erfolgt dabei automatisch unter der Steuerung eines Zeitschalters. Diese bekannte Presse dient ausschließlich der manuellen Verarbeitung einzelner Werkstücke, wie der Reparatur beschädigter Kleidungsstücke, wogegen ein kontinuierlicher Betrieb zur fortlaufenden Verarbeitung thermoplastischer Folien nicht möglich ist.Finally, there is also a press for sealing a thermoplastic film onto a material layer such as a textile fabric known (DE-OS 14 79 137), in which one with a flexible, heat-resistant material coated, unheated, fixed lower pressure plate is provided on the one with a smooth, heated pressing surface provided upper press plate can be placed under pressure to carry out the heat seal in this known press, the material layer together with the layer placed on it thermoplastic film is applied to the lower press plate and then the upper press plate is pressed against it and heated. The opening process of the two press plates pressed against one another after completion the required sealing time takes place automatically under the control of a timer. This well-known press is used exclusively for the manual processing of individual workpieces, such as the Repairing damaged garments, whereas a continuous operation for continuous processing thermoplastic films is not possible.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art unter Vermeidung der vorerwähnten Nachteile derart auszubilden, daß auch Prägungen und Schneidvorgänge ausführbar sind und gleichzeitig die Beanspruchung des Transportbandes herabgesetzt ist.The invention is based on the object of avoiding a device of the type mentioned at the beginning of the aforementioned disadvantages in such a way that embossing and cutting operations can also be carried out and at the same time the stress on the conveyor belt is reduced.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß nur das Gegenwerkzeug die Profilierung aufweist und daß es etwa auf Raumtemperatur gehalten ist.According to the invention, this object is achieved in that only the counter tool has the profiling and that it is kept at about room temperature.
Durch die erfindungsgemäße Maßnahme, nur das Gegenwerkzeug mit der Profilierung zu versehen, wird einerseits die Abnutzung des auf dem glatten Schweißwerkzeug aufliegenden Transportbandes auf ein Mindestmaß herabgesetzt und andererseits die Durchführung von Prägungen und Schneidvorgängen durch das unmittelbar auf die Folien einwirkende Gegenwerkzeug ermöglicht. In diesem Zusammenhang ist es bedeutsam, daß das Gegenwerkzeug nicht auf die Schweißtemperatur aufgeheizt ist, sondern etwa auf Raumtemperatur, das heißt auf eine unterhalb der Erweichungstemperatur der Folien liegende Temperatur eingestellt ist. Durch diese Maßnahme wird verhindert, daß die mit dem Gegenwerkzeug in Berührung stehenden Folien an dem Gegenwerkzeug ankleben.The inventive measure to provide only the counter tool with the profiling, is on the one hand, the wear of the conveyor belt resting on the smooth welding tool to a minimum and on the other hand, the implementation of embossing and cutting operations by the allows counter tool acting directly on the foils. In this context it is important that the counter tool is not heated to the welding temperature, but approximately to room temperature, that is, it is set to a temperature below the softening temperature of the films. By this measure prevents the films in contact with the counter-tool from adhering to the Glue on the counter tool.
Im einzelnen arbeitet die Vorrichtung in der Weise, daß die beiden zu verschweißenden Folienbahnen auf der Oberseite des hitzebeständigen 1 ransportbandesIn detail, the device works in such a way that the two film webs to be welded on the top of the heat-resistant 1 transport tape
fi5 transportiert werden, dem im Bereich der Schweißpresse das etwa auf Raumtemperatur gehaltene Gegenwerkzeug, dessen Kontur der gewünschten Schweißkontur entspricht, gegenübersteht. Das dauerbeheiztefi5, the one in the area of the welding press the counter-tool, which is kept at about room temperature, whose contour corresponds to the desired welding contour corresponds, faces. The permanently heated
Schweißwerkzeug ist unterhalb der Transportebene angeordnet und wird zum Schweißen an die Unterseite des wärmebeständigen Transportbandes angedrücktWelding tool is located below the transport level and is used for welding to the bottom of the heat-resistant conveyor belt
Wie Versuche gezeigt haben, können durch eine entsprechende Profilierung des Gegenwerkzeuges eine große Anzahl von verschiedenen Schweißnahtformen sowie Prägungen hergestellt werden, insbesondere können Schneidkanten eingesetzt werden. Darüber hinaus bietet die Vorrichtung die Vorteile, daß eines der Transportbänder eingespart werden kann und daß durch die glattflächige Ausbildung des Schweißwerk-As tests have shown, a corresponding profiling of the counter tool can large numbers of different weld seam shapes and embossments can be produced, in particular cutting edges can be used. In addition, the device offers the advantages that one of the Conveyor belts can be saved and that the smooth-surfaced design of the welding
zeuges eine wesentlich geringere mechanische und thermische Beanspruchung des hitzebeständigen Transportbandes auftritt, wodurch dieses eine längere Lebensdauer erhält als bisher. Die Vorrichtung kann ausgehend von der aus der DE-OS 26 23 005 bekannten Schweißpresse verwirklicht werden. Es muß lediglich das dauerbeheizte Schweißwerkzeug an der Hubtischplatte der Schweißpresse und das Gegenwerkzeug an der feststehenden Oberplatte befestigt und das untere Transportband aus hitzebeständiger Folie ausgeführt werden, während das obere Transportband entfällt.witnesses a significantly lower mechanical and thermal stress on the heat-resistant conveyor belt occurs, whereby this receives a longer service life than before. The device can starting from the welding press known from DE-OS 26 23 005 can be realized. It just has to the continuously heated welding tool on the lifting table plate of the welding press and the counter tool attached to the fixed top plate and the lower conveyor belt made of heat-resistant film while the upper conveyor belt is omitted.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2757628A DE2757628C2 (en) | 1977-12-23 | 1977-12-23 | Device for welding or embossing thermoplastic foils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2757628A DE2757628C2 (en) | 1977-12-23 | 1977-12-23 | Device for welding or embossing thermoplastic foils |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2757628A1 DE2757628A1 (en) | 1979-06-28 |
| DE2757628C2 true DE2757628C2 (en) | 1982-08-12 |
Family
ID=6027077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2757628A Expired DE2757628C2 (en) | 1977-12-23 | 1977-12-23 | Device for welding or embossing thermoplastic foils |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2757628C2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3703394A1 (en) * | 1986-02-28 | 1987-09-03 | Alkor Gmbh | Process and device for welding plastic sheets, webs and/or blanks lying one on top of the other in a planar manner |
| DE3813102C1 (en) * | 1988-04-19 | 1989-02-09 | Paul Kiefel Hochfrequenz-Anlagen Gmbh, 8228 Freilassing, De | Document file |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1074659A (en) * | 1952-11-26 | 1954-10-07 | Improvements in the means for assembling thermoplastic sheet materials | |
| NL294930A (en) * | 1962-07-13 | |||
| DE2244820A1 (en) * | 1972-09-13 | 1974-03-21 | Stiegler Maschf Felix | Welding moving thermoplastic sheets - using vibratory welding bar to permit sliding of sheets between welding bars without sticking |
-
1977
- 1977-12-23 DE DE2757628A patent/DE2757628C2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3703394A1 (en) * | 1986-02-28 | 1987-09-03 | Alkor Gmbh | Process and device for welding plastic sheets, webs and/or blanks lying one on top of the other in a planar manner |
| DE3813102C1 (en) * | 1988-04-19 | 1989-02-09 | Paul Kiefel Hochfrequenz-Anlagen Gmbh, 8228 Freilassing, De | Document file |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2757628A1 (en) | 1979-06-28 |
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| 8110 | Request for examination paragraph 44 | ||
| 8162 | Independent application | ||
| D2 | Grant after examination |