DE102010018381A1 - Welding device for welding films of calendars, has diagonal pull rollers rolled diagonal to transporting direction on film edge, and upper and lower films movable through lateral product stop in longitudinal and transverse directions - Google Patents

Welding device for welding films of calendars, has diagonal pull rollers rolled diagonal to transporting direction on film edge, and upper and lower films movable through lateral product stop in longitudinal and transverse directions Download PDF

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DE102010018381A1
DE102010018381A1 DE102010018381A DE102010018381A DE102010018381A1 DE 102010018381 A1 DE102010018381 A1 DE 102010018381A1 DE 102010018381 A DE102010018381 A DE 102010018381A DE 102010018381 A DE102010018381 A DE 102010018381A DE 102010018381 A1 DE102010018381 A1 DE 102010018381A1
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film
longitudinal
product
welding
diagonal
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DE102010018381B4 (en
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Anmelder Gleich
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    • 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
    • B29C65/7439—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 continuously and longitudinally welding and severing 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
    • 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
    • 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
    • B29C65/749—Removing scrap
    • 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
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7835—Positioning the parts to be joined, e.g. aligning, indexing or centring by using stops
    • 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
    • B29C65/7894—Means for handling of moving sheets or webs of continuously 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
    • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • 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
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table

Abstract

The device has two longitudinal welding units arranged at a distance from each other in a transporting direction of conveyors. Upper and lower diagonal pull rollers (6) are rolled diagonal to the transporting direction on a film edge (7) to be separated before a film is passed to one of the welding units. An upper film (9) and a lower film (10) are movable through a lateral product stop (8) in a longitudinal direction and a transverse direction. The rollers are arranged next to each other in the transporting direction and supported at swingably supported lever arms (11). An independent claim is also included for a method for welding films of planar products.

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Folieneinschweißung flächiger Produkte gemäße den Oberbegriffen der Ansprüche 1 und 6.The invention relates to a device and a method for Folieneinschweißung sheet products according to the preambles of claims 1 and 6.

Solche flache bzw. flächige Produkte können beispielsweise aus einzuschweißenden Kalendern bestehen, wobei die bekannten Vorrichtungen in Längsrichtung der Produkte unschöne breite Folienränder erzeugen, die zum Teil durch Umlegen auf die Rückseite der Produkte per Hand nachgearbeitet werden müssen.Such flat or sheet-like products can consist, for example, of calendars to be welded in, the known devices producing unsightly wide film edges in the longitudinal direction of the products, which in part must be reworked by folding over to the back of the products by hand.

Diese bekannten Vorrichtungen und die damit durchführbaren Verpackungsverfahren erzeugen so entweder eine unschöne Verpackung oder das Erfordernis eine manuellen Nacharbeitung der Verpackung, was zum einen einen negativen optischen Produkteindruck mit sich bringt oder aber einen erhöhten wirtschaftlichen Aufwand bedeutet.These known devices and the packaging methods that can be carried out thereby produce either unsightly packaging or the requirement for manual reworking of the packaging, which on the one hand entails a negative visual product impression or means an increased economic outlay.

Aufgabe der Erfindung ist es, eine Vorrichtung und ein Verfahren zur Folieneinschweißung solcher flacher bzw. flächiger Produkte zur Verfügung zu stellen, die ohne erforderliche Nacharbeit sofort ein optimales Verpackungsergebnis liefern.The object of the invention is to provide a device and a method for Folieneinschweißung such flat or flat products available that provide immediately without reworking an optimal packaging result.

Die Lösung dieser Aufgabe ergibt sich in Verbindung mit den Oberbegriffsmerkmalen erfindungsgemäß im Zusammenhang mit den kennzeichnenden Merkmalen der Ansprüche 1 und 6.The solution to this problem arises in conjunction with the preamble features according to the invention in conjunction with the characterizing features of claims 1 and 6.

Bekannte Vorrichtungen weisen Einlauf- und Auslaufförderbänder sowie Ober- und Unterfolienzuführungen von Ober- und Unterfolien auf sowie Querschweißeinheiten und beidseitig des Förderbandes Längsschweißeinheiten sowie seitliche obere und untere Transportriemen für die Folien. Dadurch, dass die Längsschweißeinheiten in einer Transportrichtung der Förderbänder erfindungsgemäß voneinander entfernt angeordnet sind, ergibt sich die Möglichkeit, vor der zweiten Längsschweißeinheit Schrägzugwalzen zur Transportrichtung leicht schräg angestellt auf den später abzutrennenden Folienrand abrollen zu lassen, mit denen die Oberfolie und die Unterfolie unter einem einzuschweißendem Produkt so durchziehbar ist, dass die erste Längsschweißnaht der gegenüberliegenden Seite an das Produkt herangezogen werden kann, welches selber in Richtung der zweiten Längsschweißeinheit bewegt wird, aber dort von einem seitlichen Produktanschlag abgestützt wird, unter dem die Ober- und Unterfolie in Längs- und/oder Querrichtung hindurch bewegbar ist.Known devices have inlet and outlet conveyor belts and top and bottom film feeds of top and bottom films and transverse welding units and both sides of the conveyor longitudinal welding units and lateral upper and lower conveyor belt for the films. Characterized in that the longitudinal welding units are arranged according to the invention away from each other in a transport direction of the conveyor belts, it is possible to roll obliquely before the second longitudinal welding unit Schrägzugwalzen to the transport direction obliquely to the later separated film edge, with which the upper film and the lower film einweißweißendem Product is so durchziehbar that the first longitudinal weld on the opposite side of the product can be used, which is itself moved in the direction of the second longitudinal welding unit, but there is supported by a lateral product stop, under which the top and bottom film in longitudinal and / or or transverse direction is movable therethrough.

Dies ermöglicht es, die zweite Längsschweißeinheit unmittelbar benachbart des Produktes zu erzeugen, so dass nur ein minimaler Folienüberstand von wenigen mm, jedenfalls unterhalb 1 cm erzeugt werden kann. Der optische Eindruck eines so verpackten Produktes ist sofort nach der Verpackung optimal und es ist auch nicht erforderlich, das erzielte Ergebnis durch manuelle Bearbeitung nacharbeiten zu müssen, so dass diese erfinderische Vorrichtung einen Sprung in der Wirtschaftlichkeit der Warenverpackung gewährleistet.This makes it possible to produce the second longitudinal welding unit immediately adjacent to the product, so that only a minimum film projection of a few mm, at least below 1 cm can be produced. The visual impression of such a packaged product is optimal immediately after packaging and it is not necessary to rework the result achieved by manual processing, so that this inventive device ensures a jump in the economics of the product packaging.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich mit und in Kombination aus den nachfolgenden Unteransprüchen.Further advantageous embodiments of the invention will become apparent with and in combination from the following subclaims.

Gemäß einer bevorzugten Ausführungsform der Erfindung sind mehrere Schrägzuwalzen in Transportrichtung hintereinander angeordnet, so dass sich die Spannung in den Folien schrittweise vergrößern lässt, was die Betriebssicherheit der Vorrichtung und das Prozessergebnis weiter verbessert.According to a preferred embodiment of the invention, several inclined rollers are arranged one behind the other in the transport direction, so that the tension in the films can be increased stepwise, which further improves the reliability of the device and the process result.

Eine weitere Steigerung erfolgt dadurch, dass die einzelnen Schrägzuwalzen in Transportrichtung mit einem sich vergrößernden Schräglaufwinkel versehen sind, wodurch sich die erhöhte Schräglaufspannung weiter vergrößert.A further increase takes place in that the individual inclined rollers are provided in the transport direction with an increasing skew angle, whereby the increased skew tension further increases.

Zur Verwirklichung dieser Vorrichtung sind die Schräglaufwalzen an schwenkbar gelagerten Hebelarmen angeordnet, die auf ihren den Walzen gegenüberliegenden Enden mit Spindelmuttern versehen sind, die über an der Vorrichtung gelagerte Spindeln und einen Stellantrieb verschwenkbar sind, so dass auch die Ausführung der erfinderischen Vorrichtung höchst einfach aber sehr präzise erfolgt. Die Schrägzugwalzen sind dabei von innen nach außen seitlich hinter dem oberen und unteren Produktanschlag sowie einer oberen und unteren Transportriemenführung mit den oberen und unteren Transportriemen angeordnet, wodurch sich eine optimale Zugänglichkeit der Schrägzugwalzen ergibt.To realize this device, the skew rollers are arranged on pivotally mounted lever arms, which are provided on their opposite ends of the rollers with spindle nuts which are pivotable about mounted on the device spindles and an actuator, so that the execution of the inventive device very simple but very precise. The Schrägzugwalzen are arranged from the inside to the outside laterally behind the upper and lower product stop and an upper and lower transport belt guide with the upper and lower conveyor belt, resulting in optimum accessibility of the Schrägzugwalzen.

Nachfolgend wird der Ablauf des Verfahrens anhand von Figuren näher beschrieben. Es zeigen:The course of the method will be described in more detail below with reference to figures. Show it:

1 eine Vorderansicht der Vorrichtung vor der zweiten Längsschweißeinheit, und 1 a front view of the device in front of the second longitudinal welding unit, and

2 eine Draufsicht auf die Vorrichtung. 2 a plan view of the device.

Eine Oberfolie 9 und eine Unterfolie 10 werden mit einem dazwischen angeordneten Produkt 19 auf ein Einlaufförderband 4 aufgebracht und dort zunächst mit einer Querschweißung 20 versehen und in Transportrichtung 3 dahinter anschließend mit einer ersten Längsschweißung 1 durch ein Messer 16 weiter bearbeitet. In einigem Abstand in Transportrichtung 3 dahinter, mindestens aber dem halben Abstand der Länge eines Produktes 19, erfolgt auf der gegenüberliegenden Seite des Produktes 19 eine zweite Längsschweißung 2, wobei die jeweils abgetrennten Reststreifen 21 rechts- und linksseitig von Reststreifenwicklern 22 aufgewickelt werden. Vor der zweiten Längsschweißeinheit 2 sind im vorliegenden Beispiel, wie in 2 dargestellt, drei Paare von jeweils oberen und unteren Querzugwalzen 6 angeordnet, die auf dem seitlichen Folienrand 7 abrollen, wobei sie um einige Winkelgrade von der Transportrichtung 3 angewinkelt auf den Folienrand 7 abrollen und so eine Folienzugrichtung 18 erzeugen, die Ober- und Unterfolie 9; 10 in seitlicher Richtung unter einem seitlichen Produktanschlag 8 für das Produkt 19 hindurch ziehen, welches seinerseits von einem Produktanschlag 8 an einer weiteren seitlichen Bewegung gehindert wird, so dass die erste auf der gegenüberliegenden Seite erzeugte Naht der Längsschweißung an das Produkt 19 herangezogen wird, welches seinerseits an den Produktanschlag 8 herangezogen wird, so dass das Messer 16 der zweiten Längsschweißeinheit 2 unmittelbar benachbart dem Produkt 19 den zweiten Folienrand 7 abtrennen kann.A top film 9 and a bottom foil 10 be with an interposed product 19 on an infeed conveyor 4 applied and there first with a transverse weld 20 provided and in the transport direction 3 behind with a first longitudinal weld 1 through a knife 16 further edited. At some distance in the transport direction 3 behind, but at least half the distance of the length of a product 19 , takes place on the opposite side of the product 19 a second longitudinal weld 2 , wherein the respective separated residual strips 21 right and left side of residual strip winder 22 be wound up. Before the second longitudinal welding unit 2 are in the present example, as in 2 shown, three pairs of each upper and lower Querzugwalzen 6 arranged on the side of the film 7 roll, taking a few degrees from the transport direction 3 bent on the edge of the film 7 Roll and so a Folienzugrichtung 18 produce, the top and bottom film 9 ; 10 in the lateral direction under a lateral product stop 8th for the product 19 pull it, which in turn from a product stop 8th is prevented from further lateral movement, so that the first seam produced on the opposite side of the longitudinal weld to the product 19 is used, which in turn to the product stop 8th is used, so the knife 16 the second longitudinal welding unit 2 immediately adjacent to the product 19 the second edge of the film 7 can separate.

Beide Folienschweißnähte befinden sich damit in unmittelbarer Nähe zum Produkt 19, so dass sich insgesamt eine nicht nachzuarbeitende Folieneinschweißung ergibt, die ohne weitere Bearbeitung ein optisch ansprechendes Gesamtprodukt liefert.Both foil welds are thus in the immediate vicinity of the product 19 , so that a total results in a non-reworked Folieneinschweißung that provides a visually appealing overall product without further processing.

Claims (7)

Vorrichtung zur Folieneinschweißung flächiger Produkte wie Kalender, mit einem Einlaufförderband, einem Auslaufförderband, einer Ober- und Unterfolienzuführung von Ober- und Unterfolien mit einer Querschweißeinheit und beidseitigen Längsschweißeinheiten und seitlichen oberen und unteren Transportriemen für die Folienränder, dadurch gekennzeichnet, dass die Längsschweißeinheiten (1; 2) in einer Transportrichtung (3) der Förderbänder (4; 5) voneinander entfernt angeordnet sind und von der in Transportrichtung (3) zweiten Längsschweißeinheit (2) jeweils mindestens eine obere und untere Schrägzugwalze (6) leicht schräg zur Transportrichtung (3) auf dem später abzutrennenden Folienrand (7) aufliegt und ein seitlicher Produktanschlag (8) vorgesehen ist, unter dem die Ober- und Unterfolie (9; 10) in Längs- und Querrichtung hindurch bewegbar ist.Device for film welding flat products such as calendars, with an inlet conveyor belt, a discharge conveyor, a top and bottom film feed of top and bottom films with a transverse welding unit and two-sided longitudinal welding units and side upper and lower conveyor belt for the film edges, characterized in that the longitudinal welding units ( 1 ; 2 ) in a transport direction ( 3 ) of the conveyor belts ( 4 ; 5 ) are arranged away from each other and from the transport direction ( 3 ) second longitudinal welding unit ( 2 ) at least one upper and lower oblique tension roller ( 6 ) slightly oblique to the transport direction ( 3 ) on the later to be separated foil edge ( 7 ) and a lateral product stop ( 8th ) is provided, under which the upper and lower film ( 9 ; 10 ) is movable in the longitudinal and transverse directions. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass mehrere Schrägzugwalzen (6) in Transportrichtung (3) hintereinander darauf angeordnet sind.Apparatus according to claim 1, characterized in that a plurality of diagonal tension rollers ( 6 ) in the transport direction ( 3 ) are arranged one behind the other on it. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die nach einer ersten Schrägzugwalze (6) folgenden Schrägzugwalzen (6) unter einem vergrößerten Schräglaufwinkel angeordnet sind.Apparatus according to claim 2, characterized in that after a first Schrägzugwalze ( 6 ) following diagonal pull rolls ( 6 ) are arranged at an increased skew angle. Vorrichtung nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass die Schrägzugwalzen (6) an schwenkbar gelagerten Hebelarmen (11) gelagert sind, die Spindelnmuttern (12) aufweisen und über an der Vorrichtung gelagerte Spindeln (13) verschwenkbar ausgebildet sind.Device according to one of the preceding claims, characterized in that the diagonal tension rollers ( 6 ) on pivotally mounted lever arms ( 11 ), the spindle nuts ( 12 ) and mounted on the device spindles ( 13 ) are formed pivotable. Vorrichtung nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass die Schrägzugwalzen (6) seitlich hinter dem oberen und unteren Produktanschlag (8) und einer oberen und unteren Transportriemenführung (14) mit oberen und unteren Transportriemen (15) angeordnet sind.Device according to one of the preceding claims, characterized in that the diagonal tension rollers ( 6 ) laterally behind the upper and lower product stop ( 8th ) and an upper and lower transport belt guide ( 14 ) with upper and lower transport belts ( 15 ) are arranged. Verfahren zur Folieneinschweißung flächiger Produkte wie Kalender, dadurch gekennzeichnet, dass eine Oberfolie (9) und eine Unterfolie (10) mit einem dazwischen angeordneten Produkt (19) auf einem Förderband (4; 5) zunächst mit einer Querschweißung (20), anschließend in Transportrichtung (3) dahinter mit einer ersten Längsschweißung und beabstandet davon in Transportrichtung (3) in mindestens halbem Abstand der Länge eines Produktes (19) zur ersten Längsschweißung mit einer zweiten Längsschweißung auf der gegenüberliegenden Seite versehen werden, wobei vor der zweiten Längsschweißeinheit (2) Schrägzugwalzen (6) auf den seitlichen Folienrand (7) derart einwirken, dass die Oberfolie (9) und die Unterfolie (10) zusätzlich zur Transportrichtung (3) in seitlicher Folienzugrichtung (18) unter einem seitlichen Produktanschlag (8) für das Produkt (19) hindurchgezogen werden, wodurch die erste Längsnaht an das Produkt (19) und das Produkt (19) an den Produktanschlag (8) herangezogen wird und anschließend die zweite Längsschweißung mit einem nur geringen Abstand zum Produkt (19) erfolgt.Method for film welding flat products such as calendars, characterized in that a top film ( 9 ) and a lower foil ( 10 ) with an intermediate product ( 19 ) on a conveyor belt ( 4 ; 5 ) first with a transverse weld ( 20 ), then in the transport direction ( 3 ) behind it with a first longitudinal weld and spaced therefrom in the transport direction ( 3 ) at least half the length of a product ( 19 ) are provided for the first longitudinal welding with a second longitudinal welding on the opposite side, wherein in front of the second longitudinal welding unit ( 2 ) Diagonal tension rollers ( 6 ) on the lateral edge of the film ( 7 ) act such that the upper film ( 9 ) and the lower film ( 10 ) in addition to the transport direction ( 3 ) in the lateral film pulling direction ( 18 ) under a lateral product stop ( 8th ) for the product ( 19 ), whereby the first longitudinal seam to the product ( 19 ) and the product ( 19 ) to the product stop ( 8th ) and then the second longitudinal welding with only a small distance to the product ( 19 ) he follows. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass mehre Paare von oberen und unteren Schrägzugwalzen (6) mit zunehmenden Anstellwinkel hintereinander angeordnet sind und den seitlichen Zug auf die Ober- und Unterfolie (9; 10) stufenweise erhöhen.Method according to claim 6, characterized in that a plurality of pairs of upper and lower oblique tension rollers ( 6 ) are arranged one behind the other with increasing angle of attack and the lateral pull on the upper and lower film ( 9 ; 10 ) gradually increase.
DE102010018381.4A 2010-04-26 2010-04-26 Device and method for film welding flat products Expired - Fee Related DE102010018381B4 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552088A (en) * 1968-07-18 1971-01-05 Nishimura Seisakusho Co Method of and apparatus for packing articles
DE29807061U1 (en) * 1998-04-20 1998-08-13 Hugo Beck Gmbh & Co Kg Verpack Device for packaging flat, flexible packaging goods in a packaging bag
EP1188670A1 (en) * 2000-09-18 2002-03-20 Ferag AG Method and machine for wrapping printed products in a packaging material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552088A (en) * 1968-07-18 1971-01-05 Nishimura Seisakusho Co Method of and apparatus for packing articles
DE29807061U1 (en) * 1998-04-20 1998-08-13 Hugo Beck Gmbh & Co Kg Verpack Device for packaging flat, flexible packaging goods in a packaging bag
EP1188670A1 (en) * 2000-09-18 2002-03-20 Ferag AG Method and machine for wrapping printed products in a packaging material

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