DE29610976U1 - Device for the continuous sealing of foil bags - Google Patents

Device for the continuous sealing of foil bags

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Publication number
DE29610976U1
DE29610976U1 DE29610976U DE29610976U DE29610976U1 DE 29610976 U1 DE29610976 U1 DE 29610976U1 DE 29610976 U DE29610976 U DE 29610976U DE 29610976 U DE29610976 U DE 29610976U DE 29610976 U1 DE29610976 U1 DE 29610976U1
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DE
Germany
Prior art keywords
heating
sealing
bag
conveyor
film
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Expired - Lifetime
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DE29610976U
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German (de)
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Individual
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Individual
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Priority to DE29610976U priority Critical patent/DE29610976U1/en
Publication of DE29610976U1 publication Critical patent/DE29610976U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1445—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface heating both sides of the joint
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1464—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators
    • B29C65/1467—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous welding
    • 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
    • B29C65/7858—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 characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B29C65/787—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains
    • B29C65/7873—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains using cooperating conveyor belts or cooperating conveyor chains
    • 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
    • B29C65/7858—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 characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7891—Means for handling of moving sheets or webs of discontinuously moving sheets or webs
    • 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
    • B29C66/40—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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Manufacturing & Machinery (AREA)
  • Package Closures (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Description

9 · 9 ·

(17 612)(17 612)

Gerät zum Durchlaufversiegeln von FolienbeutelnDevice for continuous sealing of film bags

Die Neuerung betrifft ein Gerät zum Durchlaufversiegeln von Folienbeuteln, bestehend aus einem Gehäuse mit an einen Auflagetisch angrenzenden und mit Antrieb versehenen Folienbeutelförderelementen, wobei innerhalb der von den Folienbeutelförderelementen vorgegebenen Förderstrecke eine Heizstation angeordnet ist.The innovation concerns a device for continuous sealing of film bags, consisting of a housing with film bag conveyor elements adjacent to a support table and provided with a drive, wherein a heating station is arranged within the conveyor path specified by the film bag conveyor elements.

Derartige Geräte zum Durchlaufversiegeln von Folienbeuteln sind bspw. nach dem DE-GM 87 11 367 bekannt und dienen dazu, einseitig offene Beutel längs ihres Öffnungsrandes zu versiegeln, um bspw. in den Beuteln durch Versiegelung eingeschlossene, medizinische Instrumente zusammen mit den Beuteln sterilisieren und sie anschließend für eine gewisse Zeit sterilisiert verfügbar halten zu können. Für den Versiegelungsvorgang ist es dabei zunächst erforderlich, das versiegelbare Beutelmaterial zu erwärmen, wofür, soweit bekannt, bislang ausschließlich sogenannte, innerhalb der Heizstation angeordnete und mit inneren Heizwiderständen ausgestattete Heizkeile verwendet werden, die am Beutelmaterial beim Durchlauf im Bereich des Beutelöffnungsrandes in der Regel von oben und unten schleifend anliegen, um dabei eine gute Wärmeübertragung zum Beutelmaterial zu gewährleisten. Dies geschieht üblicherweise dadurch, daß die Heizkeile einen in etwa derSuch devices for continuous sealing of film bags are known, for example, from DE-GM 87 11 367 and are used to seal bags that are open on one side along their opening edge, in order, for example, to sterilize medical instruments enclosed in the bags by sealing together with the bags and then to be able to keep them available in a sterilized state for a certain period of time. For the sealing process, it is first necessary to heat the sealable bag material, for which, as far as is known, only so-called heating wedges arranged within the heating station and equipped with internal heating resistors have been used, which generally rub against the bag material from above and below in the area of the bag opening edge as they pass through, in order to ensure good heat transfer to the bag material. This is usually done by the heating wedges having a thickness approximately equal to

Folienbeutelstärke entsprechenden Spalt begrenzen. Beim Transport des Folienbeutels innerhalb der Heizstation wird das Beutelmaterial durch diesen Spalt bewegt und steht dabei in direktem Kontakt mit den Heizkeilen. Es handelt sich also um ' eine unter Reibungseinfluß zwischen Beutelmaterial und Heizkeilen stattfindende Wärmeübertragung durch Wärmeleitung. Problematisch ist dabei zunächst, daß der direkte Kontakt des Beutelmaterials mit den Heizkeilen bei Verwendung bestimmter Beutelmaterialen, wie Polypropylen, dazu führt, daß das angeschmolzene Beutelmaterial mit den Heizkeilen verklebt und somit der Durchlauf behindert wird. Um dies zu vermeiden, werden die Heizkeile üblicherweise mit einem eine Verklebung verhindernden Material, wie Teflon, beschichtet. Durch den direkten, aber unter Reibung stattfindenden Kontakt zwischen Beschichtung und Beutelmaterial kommt es aber früher oder später zu Abriebserscheinungen an der Beschichtung, die dann von Zeit zu Zeit ausgetauscht werden muß. Dies wiederum führt zu unerwünschten Ausfallszeiten und Instandhaltungskosten. Verwendet werden auch umlaufende Teflonbänder, die dann in Schleifkontakt mit den Heizkeilen stehen und ebenfalls einem Verschleiß unterliegen.Limit the gap to a size corresponding to the thickness of the film bag. When the film bag is transported within the heating station, the bag material is moved through this gap and is in direct contact with the heating wedges. This is a heat transfer through heat conduction under the influence of friction between the bag material and the heating wedges. The first problem is that the direct contact of the bag material with the heating wedges when using certain bag materials, such as polypropylene, leads to the melted bag material sticking to the heating wedges and thus the flow is impeded. To avoid this, the heating wedges are usually coated with a material that prevents sticking, such as Teflon. However, the direct contact between the coating and the bag material, which takes place under friction, sooner or later leads to abrasion on the coating, which then has to be replaced from time to time. This in turn leads to undesirable downtime and maintenance costs. Circumferential Teflon bands are also used, which are then in grinding contact with the heating wedges and are also subject to wear.

Hier Abhilfe zu schaffen, liegt der Neuerung als Aufgabe zugrunde, d.h., Geräte der eingangs genannten Art sollen mit einfachen Mitteln dahingehend verbessert werden, daß bei weiterhin zu beachtender Vermeidung des Verklebens der Heizkeile mit dem Beutelmaterial kein Abrieb bzw.The aim of the innovation is to remedy this situation, i.e. devices of the type mentioned above should be improved using simple means so that, while still avoiding sticking of the heating wedges to the bag material, no abrasion or

Verschleiß an den Heizkeilen bzw. an deren Beschichtung beim Durchlauf der Folienbeutel durch die Heizstation entsteht.Wear on the heating wedges or their coating occurs when the film bags pass through the heating station.

Diese Aufgabe ist' mit einem Gerät zum Durchlaufversiegeln von Folienbeuteln der eingangs genannten Art nach der Neuerung dadurch gelöst, daß die innerhalb der Heizstation angeordneten Heizelemente als gegen die Förderstrecke gerichtete und in Abstand zu dieser angeordnete Infrarotstahler ausgebildet sind.This task is solved with a device for continuous sealing of film bags of the type mentioned above according to the innovation in that the heating elements arranged within the heating station are designed as infrared radiators directed towards the conveyor line and arranged at a distance from it.

Hieraus ergibt sich, daß eine andere Art der Wärmeübertragung, nämlich Wärmeübertragung durch Wärmestrahlung statt durch Wärmeleitung, die Erwärmung des Beutelmaterials bewirkt. Vorteilhaft daran ist einerseits, daß auf einen, den vorerwähnten Abriebsverschleiß an den beschichteten Heizkeilen bewirkenden Kontakt zwischen Heizkeilen und Beutelmaterial vollständig verzichtet werden kann, und andererseits, daß Wärmestrahlung von Gasen wie Sauerstoff oder Stickstoff vollständig durchgelassen aber von festen Körpern je nach Absorptions- bzw. Reflexionszahl teilweise absorbiert bzw. entsprechend reflektiert wird, woraus wiederum folgt, daß bei dem zu versiegelnden Beutelmaterial ein Großteil der eingebrachten Heizleistung zur Erwärmung des Beutelmaterials in diesem unmittelbar selbst wirksam wird und dementsprechend nur ein geringer Wärmeverlust bzw. auch nur eine geringe Erwärmung des Gerätes selbst entstehen kann. Außerdem ist ein derart ausgebildetesThis means that a different type of heat transfer, namely heat transfer by thermal radiation instead of by thermal conduction, causes the heating of the bag material. The advantage of this is, on the one hand, that contact between the heating wedges and the bag material, which causes the aforementioned abrasion wear on the coated heating wedges, can be completely dispensed with, and, on the other hand, that thermal radiation from gases such as oxygen or nitrogen is completely let through but is partially absorbed or reflected by solid bodies depending on the absorption or reflection number, which in turn means that a large part of the heating power introduced to heat the bag material to be sealed is directly effective in the bag material itself and accordingly only a small amount of heat loss or only a small amount of heating of the device itself can occur. In addition, a device designed in this way is

• ··

Gerät ohne weiteres für die Versiegelung von Folienbeuteln geeignet, die aus zwei Folienlagen aus Kunststoff (bspw. Polypropylen) bestehen, aber auch solche, die aus einer Kunststofflage und aus einer Papierlage gebildet sind.The device is easily suitable for sealing film bags that consist of two layers of plastic film (e.g. polypropylene), but also those that consist of one layer of plastic and one layer of paper.

Um handelsverfügbare Infrarotstrahler verwenden zu können und um der Maßgabe der Abstrahlung gegen die Förderstrecke gerichteten Lichtes zu genügen, besteht eine vorteilhafte Weiterbildung darin, daß diese Infrarotstrahler an ihrer zur Förderstrecke abgewandten Seite mit Abschirmungen versehen sind.In order to be able to use commercially available infrared radiators and to meet the requirement of emitting light directed towards the conveyor line, an advantageous further development consists in providing these infrared radiators with shields on their side facing away from the conveyor line.

Das neuartige Gerät zum Durchlaufversiegeln von Folienbeuteln wird nachfolgend an Hand der zeichnerischen Darstellung eines Ausführungsbeispiels näher erläutert.The new device for continuous sealing of film bags is explained in more detail below using a drawing of an example of implementation.

Es zeigt schematischIt shows schematically

Fig. 1 das Durchlaufsiegelgerät in Seitenansicht;
Fig. 2 das Gerät gemäß Fig. 1 in DurchlaufrichtungFig. 1 the rotary sealing device in side view;
Fig. 2 the device according to Fig. 1 in the direction of flow

gesehen und
Fig. 3 in Durchlaufrichtung gesehen die Heizelemente mit ihren Abschirmungen.seen and
Fig. 3 The heating elements with their shields seen in the direction of flow.

Das Gerät zum Durchlaufversiegeln von Folienbeuteln besteht, wie bisher auch schon, aus einem Gehäuse 1 mit an einen Auflagetisch 2 angrenzenden und mit Antrieb versehenen Folieribeutelf örderelementen 3, wobei innerhalbThe device for continuous sealing of film bags consists, as before, of a housing 1 with film bag conveyor elements 3 adjacent to a support table 2 and provided with a drive, whereby within

der' von den. Folienbeutelfördereiementen 3 vorgegebenen Förderstrecke FS eine Heizstation HS angeordnet ist. Außerdem ist bei der gezeigten Ausführungsform in Durchiaufrichtung hinter der Heizstation HS ' eine Siegelstation SS 'angeordnet. Eine solche Siegelstation ist nur für bestimmte Beutelmaterialen erforderlich, wie z.B. Polypropylen, und dient dazu, die beiden angeschmolzenen Beutelöffnungsränder aufeinander zu pressen. Bei den · Folienbeutelförderelementen 3 handelt es sich um zwei über Rollen 3' geführte Endlosbänder 3'', und die Siegelstation SS besteht aus zwei unter Federdruck stehenden, mit Prägeprofilierung versehenen Siegelrollen 6, die in Bezug auf den Auflagetisch 2 für die zu versiegelnden Beutel B'- hinter den Endlosförderbändern 3' angeordnet sind (siehe Fig. 2). Diese Anordnung dient dazu, um vor der von den Siegelrollen 6 hergestellten SiegelnahtSdie äußersten ÖffnungsränderRdes Beutels unverbunden zu lassen, um damit eine Aufreißhilfe zu bilden.a heating station HS is arranged on the conveyor section FS specified by the film bag conveyor elements 3. In addition, in the embodiment shown, a sealing station SS is arranged in the direction of travel behind the heating station HS. Such a sealing station is only required for certain bag materials, such as polypropylene, and is used to press the two melted bag opening edges together. The film bag conveyor elements 3 are two endless belts 3'' guided over rollers 3', and the sealing station SS consists of two spring-loaded sealing rollers 6 provided with embossed profiling, which are arranged behind the endless conveyor belts 3' in relation to the support table 2 for the bags B' to be sealed (see Fig. 2). This arrangement serves to leave the outermost opening edgesR of the bag unconnected before the sealing seamS produced by the sealing rollers 6, in order to form a tear-open aid.

Gegenüber dieser insoweit bekannten Ausbildung solcher Geräte zeichnet sich das vorliegende Gerät dadurch aus, daß' die innerhalb der Heizstation HS angeordneten Heizelemente als gegen die Förderstrecke FS gerichtete Infrarotstahler 4 ausgebildet sind.Compared to the previously known design of such devices, the present device is characterized in that the heating elements arranged within the heating station HS are designed as infrared radiators 4 directed towards the conveyor line FS.

Unter "gegen die Förderstrecke gerichtete" ist dabei zu verstehen, daß das Infrarotlicht konzentriert lediglich auf den relativ schmalen, nach Durchlauf die Siegelnaht am Beutel bildenden Streifen S gerichtet ist. Der Abstand ABy "directed towards the conveyor line" we mean that the infrared light is concentrated only on the relatively narrow strip S which forms the sealing seam on the bag after it has passed through. The distance A

der Infrarotstrahler zur Förderstrecke FS beträgt dabei bspw. etwa 1 bis 2 cm.the distance between the infrared radiator and the conveyor line FS is, for example, about 1 to 2 cm.

Um diese Infrarotlichtorientierung zu erreichen, wäre es an sich möglich, 'die Elemente 4 bzw. die Infrarotstrahler selbst auf ihrer zur Förderstrecke FS abgewandten Rückseite mit geeigneten Material abzudecken. Vorteilhafter ist aber, wie dies Fig. 3 verdeutlicht, die Elemente 4 mit gegf. verspiegelten Abschirmungen 5 zu versehen.In order to achieve this infrared light orientation, it would be possible to cover the elements 4 or the infrared radiators themselves on their back facing away from the conveyor line FS with suitable material. However, as Fig. 3 shows, it is more advantageous to provide the elements 4 with possibly mirrored shields 5.

Die Lage und Zuordnung des zu versiegelnden Beutels B zum Gerät ist in Fig. 2 strichpunktiert angedeutet.The position and assignment of the bag B to be sealed to the device is indicated by dash-dot lines in Fig. 2.

Die Ausbildung der Siegelstation in Form zweier Siegelrollen 6, wie dargestellt, ist nicht zwingend, wird aber bevorzugt und ist letztlich auch davon abhängig, welches Folienmaterial verwendet wird und wie stark die Folien aufgeheizt werden, d.h., es ist auch eine Schmelz/Klebe-Versiegelung möglich, bei der durch andere geeignete Elemente bspw. umlaufendes Andruckband ein gewisser Druck beim Durchlauf auf den Siegelstreifen ausgeübt wird.The design of the sealing station in the form of two sealing rollers 6, as shown, is not mandatory, but is preferred and ultimately also depends on which film material is used and how much the films are heated, i.e., a melt/adhesive seal is also possible, in which a certain pressure is exerted on the sealing strip as it passes through by other suitable elements, e.g. a circumferential pressure belt.

Claims (1)

{17 612) Schutzansprüche:{17 612) Protection claims: 1. Gerät zum Du'rchlaufversiegeln von Folienbeuteln, bestehend aus einem Gehäuse (1) mit an einen Auflagetisch (2) angrenzenden und mit Antrieb versehenen Folienbeutelförderelementen (3), wobei innerhalb der von den Folienbeutelförderelementen (3) vorgegebenen Förderstrecke (FS) eine Heizstation (HS) angeordnet ist, dadurch gekennzeichnet,1. Device for continuous sealing of film bags, consisting of a housing (1) with film bag conveyor elements (3) adjacent to a support table (2) and provided with a drive, wherein a heating station (HS) is arranged within the conveyor path (FS) defined by the film bag conveyor elements (3), characterized in that daß die innerhalb der Heizstation (HS) angeordneten Heizelemente als gegen die Förderstrecke (FS) gerichtete Infrarotstahler (4) ausgebildet sind.that the heating elements arranged within the heating station (HS) are designed as infrared radiators (4) directed towards the conveyor line (FS). . Gerät nach Anspruch 1,. Device according to claim 1, dadurch gekennzeichnet,characterized, daß die Infrarotstahler (4) an ihrer zur Förderstrecke (FS) abgewandten Seite mit Abschirmungen (5) versehen sind.that the infrared radiators (4) are provided with shields (5) on their side facing away from the conveyor line (FS).
DE29610976U 1996-06-22 1996-06-22 Device for the continuous sealing of foil bags Expired - Lifetime DE29610976U1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20019799U1 (en) 2000-11-21 2001-03-01 Wolf, Hans, 74821 Mosbach Flow sealing device
DE20101729U1 (en) * 2001-02-01 2002-06-13 hawo Gerätebau GmbH, 74847 Obrigheim Device for the continuous sealing of foil bags
DE20209855U1 (en) * 2002-06-25 2003-10-30 Wolf, Christian, 74821 Mosbach Device for the continuous sealing of foil bags
DE20217566U1 (en) * 2002-11-14 2004-03-25 Wolf, Hans Test card for checking process parameters of feed through sealing machine while being fed through machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1486104B (en) * Windmoller & Holscher, 4540 Lenge rieh Method and device for attaching sealing welds to gefull th, laterally moving plastic bags
US3131623A (en) * 1961-10-30 1964-05-05 Phillips Petroleum Co Method and apparatus for making thermoplastic film seams
DE1779656B1 (en) * 1968-09-07 1972-05-31 Eltro Gmbh DEVICE FOR WELDING THERMOPLASTIC FILMS
DE3151464A1 (en) * 1981-03-18 1982-11-18 Grace W R & Co Method and device for producing a tightly-sealed package

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1486104B (en) * Windmoller & Holscher, 4540 Lenge rieh Method and device for attaching sealing welds to gefull th, laterally moving plastic bags
DE1511860B (en) * Windmoller & Holscher 4540 Lenge rieh Machine for closing filled sacks made of thermoplastic material
US3131623A (en) * 1961-10-30 1964-05-05 Phillips Petroleum Co Method and apparatus for making thermoplastic film seams
DE1779656B1 (en) * 1968-09-07 1972-05-31 Eltro Gmbh DEVICE FOR WELDING THERMOPLASTIC FILMS
DE3151464A1 (en) * 1981-03-18 1982-11-18 Grace W R & Co Method and device for producing a tightly-sealed package

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20019799U1 (en) 2000-11-21 2001-03-01 Wolf, Hans, 74821 Mosbach Flow sealing device
EP1211179A1 (en) 2000-11-21 2002-06-05 Hans Wolf Sealing device
DE20101729U1 (en) * 2001-02-01 2002-06-13 hawo Gerätebau GmbH, 74847 Obrigheim Device for the continuous sealing of foil bags
DE20209855U1 (en) * 2002-06-25 2003-10-30 Wolf, Christian, 74821 Mosbach Device for the continuous sealing of foil bags
DE20217566U1 (en) * 2002-11-14 2004-03-25 Wolf, Hans Test card for checking process parameters of feed through sealing machine while being fed through machine

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