DE1157765B - Sealing roll with electrical heating wires for sealing thermoplastic plastic films - Google Patents
Sealing roll with electrical heating wires for sealing thermoplastic plastic filmsInfo
- Publication number
- DE1157765B DE1157765B DED31548A DED0031548A DE1157765B DE 1157765 B DE1157765 B DE 1157765B DE D31548 A DED31548 A DE D31548A DE D0031548 A DED0031548 A DE D0031548A DE 1157765 B DE1157765 B DE 1157765B
- Authority
- DE
- Germany
- Prior art keywords
- sealing
- roll
- heating wires
- sealing roll
- shaft
- 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
-
- 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
- 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
- B29C66/80—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
- B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81433—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
-
- 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
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
-
- 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
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
- B29C66/83417—Roller, cylinder or drum types said rollers, cylinders or drums being hollow
-
- 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
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining 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
- B29C65/02—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
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
- B29C65/30—Electrical means
- B29C65/305—Electrical means involving the use of cartridge heaters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Package Closures (AREA)
Description
Siegelrolle mit elektrischen Heizdrähten zum Versiegeln von thermoplastischen Kunststofl Folien Die vorliegende Erfindung betrifft eine Siegelrolle, mit welcher Kunststoff-Folien versiegelt werden können. Es ist bekannt, abrollbare Siegelrollen mit elektrischen Heizdrähten zu verwenden, welche auf einer feststehenden Welle angeordnet sind und das unter der Siegelrolle befindliche längsbewegte Siegelmaterial siegeln.Sealing roll with electric heating wires for sealing thermoplastics Plastic films The present invention relates to a sealing roll with which Plastic foils can be sealed. It is known to roll-off sealing rolls to use with electric heating wires which are on a fixed shaft are arranged and the longitudinally moving sealing material located under the sealing roller seal.
Bei den bisherigen Siegelrollen hat es sich als nachteilig erwiesen, daß die Temperatur der Siegelbacke nicht genau eingehalten werden kann. Im allgemeinen befinden sich im äußeren Umkreis einer derart kreisförmigen Siegelbacke ein oder mehrere Heizdrähte, deren Temperatur über ein Thermoelement gesteuert wird. With the previous sealing rolls, it has proven to be disadvantageous that the temperature of the sealing jaw can not be precisely maintained. In general are located in the outer periphery of such a circular sealing jaw or several heating wires, the temperature of which is controlled by a thermocouple.
Rollt nun eine derartige Siegelrolle beim Schweißen ab, so kann es passieren, daß sich der Temperatur-Meßfühler gerade am Anfang der Siegelnaht befindet und dort auf Grund der an der Siegelrolle verstärkt abgegebenen Wärme einen zu tiefen Temperaturwert anzeigt. Demzufolge wird die Temperatur automatisch erhöht, was zur Folge hat, daß der nächstfolgende Bereich der Siegelbacke überhitzt ist und die Folie durchschweißt oder ungleichmäßig versiegelt. If such a sealing roll now rolls off during welding, it can happen that the temperature sensor is just at the beginning of the sealing seam and there, due to the increased heat given off at the sealing roller, it becomes too deep Temperature value. As a result, the temperature is automatically increased, resulting in The result is that the next following area of the sealing jaw is overheated and the Foil welded through or unevenly sealed.
Es ist auch möglich, daß bei Beginn der Abrollbewegung die Temperaturmeßstelle an einer Stelle befindet, die weit entfernt von der Siegelstelle ist. It is also possible that the temperature measuring point at the beginning of the rolling movement is located in a place that is far from the sealing point.
Da hier keine Wärme abgeleitet werden kann, wird eine Temperaturerniedrigung an der Siegelstelle selbst nicht mitgemessen, was zur Folge hat, daß mit einer zu kalten Siegelbacke gesiegelt wird. Man hat sehr oft festgestellt, daß beim Versiegeln von Folien und insbesondere von Beuteln periodische Fehlstellen auftreten, an welchen entweder die Versiegelung bei zu hoher oder bei zu geringer Temperatur erfolgte. Since no heat can be dissipated here, the temperature will decrease not measured at the sealing point itself, which means that with one too cold sealing jaw is sealed. It has been found very often that when sealing of foils and especially of bags periodic defects occur on which either the sealing was carried out at too high or too low a temperature.
Diese Nachteile werden erfindungsgemäß dadurch behoben, daß die Siegelrolle mit einer der Abrollbewegung entgegenwirkenden Rückstellvorrichtung vorgesehen ist, die maximal nur eine Umdrehung der Rolle gestattet. These disadvantages are eliminated according to the invention in that the sealing roller is provided with a return device counteracting the rolling movement, which allows a maximum of only one rotation of the roller.
Dadurch wird es ermöglicht, daß immer nur der gleiche Bereich der Siegelrolle den Siegelvorgang ausführt. This makes it possible that only the same area of the Sealing roll carries out the sealing process.
Vorzugsweise besteht die Rückstellvorrichtung aus einer Feder und insbesondere aus einer Spiralfeder. Preferably, the return device consists of a spring and in particular from a spiral spring.
Diese Feder kann mit ihrem einen Ende an der Siegelrolle und mit dem anderen Ende an einer die Siegelrolle tragenden Welle befestigt sein. One end of this spring can be attached to the sealing roll and with the other end to be attached to a shaft carrying the sealing roll.
Durch diese Anordnung ist es möglich, die beim Siegelvorgang abrollende Siegelrolle durch Anheben der Welle wieder in die Ausgangsstellung zurückschnappen zu lassen, wobei diese Rückwärtsbewegung durch einen Anschlag begrenzt wird. Dieser Anschlag stößt gegen einen auf der Welle angesetzten Stift. This arrangement makes it possible to prevent the rolling during the sealing process Snap the sealing roll back into its original position by lifting the shaft to let, taking this backward movement is limited by a stop. This The stop hits a pin attached to the shaft.
Der Heizdraht befindet sich bei einer mustergemäßen Ausführung in einer ringförmigen Bohrung nahe dem äußeren Bereich der Siegelfläche. Bei einer anderen mustergemäßen Ausführungsform kann das Heizelement in Form von ein oder mehreren Bändern auf der kreisförmigen Oberfläche der Siegelbacke angebracht sein. Im ersten Fall wird die Folie durch eine indirekte Beheizung, im zweiten Fall durch eine direkte Beheizung gesiegelt. Der letzteren Möglichkeit ist der Vorzug gegeben, da hierbei die Siegeltemperatur besser geregelt werden kann. Um ein Abrutschen der bandförmigen Heizelemente von der kreisförmigen Oberfläche der Siegelbacke bei Ausdehnung durch Temperaturerhöhung zu vermeiden, sind die bandförmigen Heizelemente mustergemäß durch ein oder mehrere Federn zusammengehalten, wobei diese Federn vorzugsweise in einer entsprechenden Aussparung liegen. The heating wire is in a sample version in an annular bore near the outer area of the sealing surface. At a Another exemplary embodiment, the heating element in the form of one or several bands on the circular surface of the sealing jaw. In the first case, the film is heated indirectly, in the second case by sealed a direct heating. The latter option is preferred because the sealing temperature can be better regulated here. To prevent the band-shaped heating elements from the circular surface of the sealing jaw when expanding to avoid by increasing the temperature, the band-shaped heating elements are according to the pattern held together by one or more springs, these springs preferably lie in a corresponding recess.
Im folgenden soll an Hand der Zeichnung ein Ausführungsbeispiel der Erfindung näher erläutert werden; es zeigt Fig. 1 einen Schnitt durch die Siegelrolle, Fig. 2 eine Draufsicht auf die in Fig. 1 gezeigte Siegelrolle. In the following, an exemplary embodiment of the Invention will be explained in more detail; it shows Fig. 1 a section through the sealing roll, FIG. 2 is a plan view of the sealing roll shown in FIG. 1.
Die Siegelrolle besteht aus einer Scheibe 2 mit einer kreisförmigen Siegelfläche 4. Nahe unterhalb der Siegelfläche 4 befindet sich im äußeren Bereich der Siegelrolle eine ringförmig umlaufende Bohrung 6, in welcher mehrere Heizdrähte 8 angeordnet sind. Die Scheibe 2 wird durch eine Deckplatte 10 abgedeckt, welche durch Schrauben 12 mit der Scheibe verschraubt ist. Eine Schraube 14 trägt einen vorstehenden Anschlag 14', welcher zur Begrenzung der Ab. rollbewegung dient. The sealing roll consists of a disc 2 with a circular one Sealing surface 4. Near below the sealing surface 4 is in the outer area the Sealing roller has an annular circumferential bore 6 in which several heating wires 8 are arranged. The disk 2 is supported by a cover plate 10 covered, which is screwed by screws 12 to the disc. A screw 14 carries a protruding stop 14 ', which is used to limit the rolling movement serves.
Die Siegelrolle ist auf Kugellagern 16 auf einer Welle 18 drehbar angeordnet. Die Welle 18 trägt einen Stift 20, welcher derart in eine Vertiefung 22 der Welle eingelassen ist, daß sich der Stift 20 bezüglich seiner Lage auf der feststehenden Welle 18 nicht verändern kann. The sealing roller can be rotated on ball bearings 16 on a shaft 18 arranged. The shaft 18 carries a pin 20, which in such a way in a recess 22 of the shaft is embedded that the pin 20 with respect to its position on the fixed shaft 18 can not change.
Auf der dem Stift 20 gegenüberliegenden Seite der Siegelrolle ist eine Ringfeder 24 angebracht, welche spiralförmig neben der Scheibe 2 liegt. Der Ringteil der Feder 24 ist mit der Welle 18 verbunden. Dieses wird über eine Schraube 26 bewirkt, welche mit einem Winkelstück 28 verbunden ist, welche wiederum an einer Manschette 30 befestigt ist. Die Manschette 30 liegt fest auf der Wellel8. Das andere Ende der Feder 24 ist mittels einer Schraube 32 mit dem bewegbaren Teil der Siegelrolle befestigt. On the opposite side of the sealing roll from the pin 20 an annular spring 24 is attached, which lies next to the disk 2 in a spiral shape. Of the The ring part of the spring 24 is connected to the shaft 18. This is via a screw 26 causes which is connected to an elbow 28, which in turn is attached to a Cuff 30 is attached. The cuff 30 lies firmly on the Wellel8. The other The end of the spring 24 is connected to the movable part of the sealing roller by means of a screw 32 attached.
Die Arbeitsweise der Vorrichtung ist die folgende: Wird eine Kunststoff-Folie 34 auf einer Unterlage 36 unter der Siegelrolle weggezogen - beispielsweise in Fig. 2 von links nach rechts -, so dreht sich die Siegelrolle entgegen dem Uhrzeigersinn. The operation of the device is as follows: becomes a plastic film 34 pulled away on a pad 36 under the sealing roll - for example in Fig. 2 from left to right - the sealing roller rotates counterclockwise.
Nach Versiegelung einer bestimmten Strecke, die beispielsweise der Länge eines Beutels entspricht, wird die Welle 18 angehoben, wodurch die Siegelrolle durch die Wirkung der Feder 24 automatisch zurückgedreht wird. Diese Rückstellbewegung wird durch den Anschlag 14' in der Ausgangsstellung angehalten. Bei erneutem Absenken der Siegelrolle auf den nächsten Schlauchabschnitt wird wiederum eine Drehbewegung ausgeführt, und der gleiche Vorgang beginnt von neuem. After sealing a certain stretch, for example the Corresponding to the length of a bag, the shaft 18 is raised, causing the sealing roller is automatically turned back by the action of the spring 24. This return movement is stopped by the stop 14 'in the starting position. When lowering again The sealing roll on the next tube section is in turn a rotary movement and the same process starts again.
Selbstverständlich ist es auch möglich, die Rückstellvorrichtung bei Siegelrollen anzubringen, welche auf einer geradlinig nach vorn bewegten, hin und her gehenden Welle befestigt sind. Mit der erfindungsgemäßen Vorrichtung wird erreicht, daß jedesmal der gleiche Bereich der Siegelbacke den Siegelvorgang ausführt, so daß keine Unregelmäßigkeiten in der Wärmeableitung und demzufolge Störungen in der Temperaturregelung auftreten. Weiterhin ist es möglich, eine feste Stromzuführung für die elektrisch beheizten Wiederstandsdrähte 8 anzubringen, so daß die komplizierte bisher bekannte Stromversorgung über Bürsten oder Schleifringe entfällt. Die Zuleitungskabel können beispielsweise um die Welle 18 gewickelt sein und an einer beliebigen Stelle mit den Heizdrähten 8 verbunden werden. Da die Siegelrolle maximal nur eine Umdrehung ausführt und anschließend wieder in ihre Ausgangsstellung zurückgedreht wird, genügt es, wenn die Zuleitungsdrähte nur ein geringes Spiel - etwa in der Länge des halben Wellenumfanges - haben. Of course, it is also possible to use the reset device to be attached to sealing rolls, which are moving forward in a straight line and attached her going shaft. With the device according to the invention achieves that each time the same area of the sealing jaw carries out the sealing process, so that no irregularities in the heat dissipation and consequent disturbances in the Temperature regulation occur. It is also possible to have a fixed power supply for the electrically heated resistance wires 8 to be attached, so that the complicated Previously known power supply via brushes or slip rings is no longer necessary. The supply cables can for example be wound around the shaft 18 and at any point be connected to the heating wires 8. Since the sealing roller only turns one revolution executes and is then turned back to its original position, is sufficient it if the lead wires only have a slight play - about half the length Shaft circumference - have.
Wesentlich ist bei der erfindungsgemäß vorgeschlagenen Siegelbacke, daß jetzt die Temperatur der Siegelfläche während des Betriebs auf 0,50 C genau mit den üblichen Temperaturregel- oder -meßvorrichtungen durchgeführt werden kann. In the sealing jaw proposed according to the invention, it is essential that that now the temperature of the sealing surface is accurate to 0.50 C during operation can be carried out with the usual temperature control or measuring devices.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED31548A DE1157765B (en) | 1959-09-24 | 1959-09-24 | Sealing roll with electrical heating wires for sealing thermoplastic plastic films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED31548A DE1157765B (en) | 1959-09-24 | 1959-09-24 | Sealing roll with electrical heating wires for sealing thermoplastic plastic films |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1157765B true DE1157765B (en) | 1963-11-21 |
Family
ID=7040962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DED31548A Pending DE1157765B (en) | 1959-09-24 | 1959-09-24 | Sealing roll with electrical heating wires for sealing thermoplastic plastic films |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1157765B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4034093A1 (en) * | 1990-10-26 | 1992-04-30 | Beck & Co Packautomaten | Continuous edge sealing and cutting of two films - has device for lifting knife clear of film to avoid distortion when film forward feed is interrupted, for goods packaging seams |
| DE19619558A1 (en) * | 1996-05-14 | 1997-11-20 | Focke & Co | Device for connecting a tear strip with a film web |
| US6279644B1 (en) | 1997-12-24 | 2001-08-28 | St. Gobain Bayform America Inc. | Screen and frame assembly in which the screen is adhesively secured to the frame |
| US6331223B1 (en) | 1997-12-24 | 2001-12-18 | Saint-Gobain Bayform America, Inc. | Method of fabricating adhesively secured frame assembly |
| US6991693B2 (en) | 1997-12-24 | 2006-01-31 | Saint-Gobain Bayform America, Inc. | Screen cloth insertion apparatus and method |
| DE102019127383A1 (en) * | 2019-10-10 | 2021-04-15 | Syntegon Packaging Systems Ag | Heat sealing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR863897A (en) * | 1939-10-27 | 1941-04-11 | Electric iron for soldering cellophane and the like | |
| GB658258A (en) * | 1947-01-23 | 1951-10-03 | Vincent Alwyn Duffy | Improvements in methods and apparatus for welding thermoplastic articles |
| US2589777A (en) * | 1949-07-09 | 1952-03-18 | William F Stahl | Plastic-sealing apparatus |
| DE896101C (en) * | 1951-06-10 | 1953-11-09 | Siemens Ag | Line-shaped, in particular roller or tape-shaped electrode for welding, in particular dielectric welding, of thermoplastic materials |
-
1959
- 1959-09-24 DE DED31548A patent/DE1157765B/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR863897A (en) * | 1939-10-27 | 1941-04-11 | Electric iron for soldering cellophane and the like | |
| GB658258A (en) * | 1947-01-23 | 1951-10-03 | Vincent Alwyn Duffy | Improvements in methods and apparatus for welding thermoplastic articles |
| US2589777A (en) * | 1949-07-09 | 1952-03-18 | William F Stahl | Plastic-sealing apparatus |
| DE896101C (en) * | 1951-06-10 | 1953-11-09 | Siemens Ag | Line-shaped, in particular roller or tape-shaped electrode for welding, in particular dielectric welding, of thermoplastic materials |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4034093A1 (en) * | 1990-10-26 | 1992-04-30 | Beck & Co Packautomaten | Continuous edge sealing and cutting of two films - has device for lifting knife clear of film to avoid distortion when film forward feed is interrupted, for goods packaging seams |
| DE19619558A1 (en) * | 1996-05-14 | 1997-11-20 | Focke & Co | Device for connecting a tear strip with a film web |
| US5858167A (en) * | 1996-05-14 | 1999-01-12 | Focke & Co., (Gmbh & Co) | Apparatus for connecting a tear-open strip with a film web |
| US6279644B1 (en) | 1997-12-24 | 2001-08-28 | St. Gobain Bayform America Inc. | Screen and frame assembly in which the screen is adhesively secured to the frame |
| US6331223B1 (en) | 1997-12-24 | 2001-12-18 | Saint-Gobain Bayform America, Inc. | Method of fabricating adhesively secured frame assembly |
| US6991693B2 (en) | 1997-12-24 | 2006-01-31 | Saint-Gobain Bayform America, Inc. | Screen cloth insertion apparatus and method |
| DE102019127383A1 (en) * | 2019-10-10 | 2021-04-15 | Syntegon Packaging Systems Ag | Heat sealing device |
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