EP0240827B1 - Device for the production of air cushion mailing bags - Google Patents

Device for the production of air cushion mailing bags Download PDF

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Publication number
EP0240827B1
EP0240827B1 EP87104267A EP87104267A EP0240827B1 EP 0240827 B1 EP0240827 B1 EP 0240827B1 EP 87104267 A EP87104267 A EP 87104267A EP 87104267 A EP87104267 A EP 87104267A EP 0240827 B1 EP0240827 B1 EP 0240827B1
Authority
EP
European Patent Office
Prior art keywords
paper
sealing
webs
longitudinal
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP87104267A
Other languages
German (de)
French (fr)
Other versions
EP0240827A1 (en
Inventor
Karl-Heinz Richter
Hubert Kurz
Georg Kücha
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vereinigte Papierwarenfabriken GmbH
Original Assignee
Vereinigte Papierwarenfabriken GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vereinigte Papierwarenfabriken GmbH filed Critical Vereinigte Papierwarenfabriken GmbH
Priority to AT87104267T priority Critical patent/ATE48254T1/en
Publication of EP0240827A1 publication Critical patent/EP0240827A1/en
Application granted granted Critical
Publication of EP0240827B1 publication Critical patent/EP0240827B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B31B70/643—Uniting opposed surfaces or edges; Taping by applying heat or pressure on piled sheets, e.g. sealing bags arranged in a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined

Definitions

  • the invention relates to a device for the production of bubble envelopes according to the preamble of claim 1.
  • bubble envelopes are increasingly used for the mailing of products that are sensitive to pressure or shock.
  • Such a device is already known from DE-OS 2 629 679.
  • This previously known device has a paper unwinding device for a single paper web and an air-cushion film unwinding device for a single air-cushion film web, the air-cushion film web fastened to the paper web by means of transverse sealing at the edge being folded over into a half-tube in a folding station.
  • a disadvantage of this previously known device is that only one mailing bag can be produced in one work cycle, which does not have a relatively firm edge zone on all sides as lateral protection against impacts. Furthermore, in the previously known device, the occurrence of a relatively large broke is recorded, for which the occurrence of tensions during the sealing of the paper web with the bubble wrap web and the subsequent folding is responsible. Another disadvantage is that a format change in the mailing bag to be produced can only be carried out in a relatively complicated and time-consuming manner.
  • DE-OS 2 164 152 describes a protective container and a method for producing it in the form of a mailing bag, in which side edge sealing is disclosed, but on the other hand, because of the folding process, it is not possible to produce mailing bags with a stable edge area on all sides.
  • US Pat. No. 3,896,712 discloses a device for the automatic production of letter envelopes which has a simple format adjustment by means of rotatable pinions which engage in a system with racks and spindles. There is no reference to the special production of bubble envelopes and the associated problems.
  • the invention has for its object to develop a device of the type mentioned in such a way that mailers of different formats can be produced with as few rejects as possible during a work cycle.
  • an apparatus for producing air cushion mailing bags is advantageously created, in which two or more padded mailing bags can be produced in one work cycle.
  • the relatively firm edge zones on each mailing bag which serve as lateral protection against impacts, help to reduce the amount of scrap in production.
  • the sealing of the bubble wrap with the paper web has a significant share in the reduction of rejects and thus serves to improve the operational safety of the claimed device.
  • the large-area sealing provided also advantageously allows a reduction in tensions between the paper webs and the bubble wrap webs and thus also contributes significantly to the operational reliability of the device and the reduction in rejects.
  • the production of different mailing bag formats is considerably simplified due to the overall concept.
  • a web guiding device for the correction of a course of the two connected paper webs is arranged in front of the cutting device, which advantageously contributes to the fast and reliable production without rejects, because before the cutting device there is an effective correction of the paper webs connected to the sealed air-cushion film webs.
  • Cooling devices are preferably arranged downstream of the longitudinal and transverse sealing devices in order to ensure reliable sealing and to further increase manufacturing reliability.
  • a PTFE lance preventing the pocket openings from being sealed is preferably provided between the two air cushion film webs in the case of longitudinal sealing, wherein, in addition, when longitudinally sealing the paper web, for each longitudinal sealing device, one is preferably attached, adjustable, and adjustable for each longitudinal sealing device the sealable surface of the windable PTFE sheet is provided to prevent contamination or sticking.
  • a cut-to-length setting device and a setting device for mailing bag formats are provided for adapting the device to different mailing bag formats, the size setting device having toothed racks in the running direction and transverse to the running direction of the paper web, and the toothed racks also being connected to sealing elements of the sealing devices and cooling elements comb the adjustment pinions mounted on the cooling devices. It is furthermore advantageous if measuring scales fixed to the device are provided on both sides of the running direction of the paper web, at least for the setting control of the landscape format.
  • a photocell control for section determination is preferably provided for the cross cutting of the mailing bags, with which touch can be worked easily and quickly.
  • the transport of the paper web sealed with the bubble wrap webs is preferably carried out by means of traction rollers which engage a longitudinal sealing seam produced within the paper web and on the lateral edges of the paper web, preferably the web guiding in the edge region of the sealed paper web, in each case one driveless guide roller inclined outward in the web running direction and one has associated drive-less pressure roller which is inclined outwards in the paper web running direction, the pressure roller only engaging the other opposite edge of the paper web when the paper web runs out, and the pressure duration of the pressure roller being adjustable by a timer.
  • a photocell is advantageously provided on each edge, by means of which signal the pressing of the pressure roller provided for the other opposite edge can be actuated via an electrically controlled compressed air cylinder.
  • a punching device for producing flap closure holes and for chamfering the closure flaps is arranged upstream of the web guiding device in the direction of travel of the paper webs, the toothed racks having pinions which mesh with them and can be actuated for adjustment, and have a measuring scale.
  • the air cushion mailing bags are composed of paper webs and air cushion film webs and are produced by a plurality of devices which are arranged contiguously in a transport direction.
  • FIGS. 1 and 2 are partially schematic in order to facilitate the explanation of the structure and the mode of operation of the device according to the invention.
  • the device 10 When viewed in the conveying direction, the device 10 initially has an unwinding device 11 with two paper rolls 12 and 13, the paper roll 12 providing the upper paper web for the mailing bags to be produced and the paper roll 13 for the lower paper web 15 of the mailing bag to be produced.
  • the paper is coated and consists, for example, of soda paper.
  • the upper paper web 14 and the lower paper web 15 are guided by a system of deflection rollers which are arranged in the frame 16.
  • the paper printing device 21 preferably consists of a reflex printing unit with a width of approximately 1270 mm.
  • the upper paper web 14 passes through the paper printing device 21 continuously and is then continuously transported by the upper half of paper web advantages 22.
  • the lower half of these paper web advantages 22 is provided for the continuous movement of the lower paper web 13.
  • the paper printing device is arranged with a drive, not shown, in a printing unit stand 23, which is firmly connected to the frame 16 of the unwinding device 11 and the guide rail for the crane and the leverage 20.
  • an unwinding device 24 for the bubble wrap rolls in which two double unwinds with a total of four rolls are provided. Due to the provision of double processes, there can be no downtimes when changing rolls.
  • the double unwinding 24 is also provided with an automatic gluing station, not shown, in which the end of an air cushion film web of one roll can be connected to the beginning of the air cushion film web of the other roll butt to butt.
  • the rollers 25 and 26 are alternatively provided for the supply of the upper bubble film web 27, while the lower rollers 28 and 29 alternatively serve for the supply of the lower bubble film web 30.
  • the device 10 is intended for two-piece production of mailing bags.
  • the upper air cushion film web 27 and the lower air cushion film web 30 are inserted between the upper paper web 14 and the lower paper web 15, the lower paper web 15 projecting on each side by the intended flap size from the upper paper web 14.
  • the fixed closure 18 is rolled off at the device designated 31.
  • the device 31 is also permanently connected to the frame 16 as a unit.
  • this surface sealing device 32 After the two air cushion film webs 27 and 30 have been inserted into the two paper webs 14 and 15, they arrive in a surface sealing device 32 for partial and / or full surface sealing of the air cushion film webs with the paper. Details of this surface sealing device 31 will be described in connection with FIGS. 3 and 4.
  • the frame of this surface sealing device 32 is also fixed and connected to the frame 16 as a unit.
  • a longitudinal sealing device 33 is provided, in which, according to the selected format of the mailing bags, a heat seal is carried out between the two paper webs in their running direction. Details of this longitudinal sealing device are explained in connection with FIGS. 8 and 9.
  • the longitudinal sealing device 33 also has a frame which is firmly connected to the frame of the other devices.
  • a longitudinal cooling device 34 in which at least the still hot sealing seam in the middle of the paper web is cooled.
  • a transverse sealing device 35 in which sealing seams are applied transversely to the paper web in accordance with the intended format size of the mailing bag.
  • These hot transverse sealing seams are cooled in the subsequent cooling device 36.
  • a subsequent punching device 37, 38 holes are punched into the closure flap and the closure flaps are chamfered.
  • the devices 34 to 38 are also fastened on a frame which is fixedly connected to the frame 16.
  • a control device 39 is provided below the longitudinal cooling device 34 and the transverse sealing device 35 for driving and synchronizing the cyclical path movement with the effect of the individual devices.
  • a photocell control 41 then follows for determining the section for the mailing bags to be cut, behind which a web guiding device 42 is then provided. Details of the photocell control for section determination and the path control device are explained in connection with FIGS. 5 to 7. The devices mentioned are also fixed on a frame which is integrally connected to the frame 16.
  • a cross-cutting device is then designated by 45, in which cross-cutting is carried out on the transverse sealing seam in accordance with the section control by the photocell control device 41.
  • the end of the device is formed by a tray 46 on which the finished air-cushioned mailing bags are placed individually.
  • the frame of this shelf is also integrally connected to the rest of the frame of the device.
  • the sealing, cooling and punching devices are driven by means of pneumatic pressure cylinders which are actuated in one work cycle, which is determined by the selected format size and the preferred speed as well as the temperatures provided on the sealing elements.
  • the device can produce formats in the range of 100 to 500 mm with a working width of 1100 mm without changing tools.
  • a simple adjustment device is provided for the respective devices, in which the sealing and cooling devices as well as the punching devices can be adjusted by means of a crank via toothed racks fixed to the frame, with a measuring tape or a measuring tape over the entire length in the scenes on both sides a measuring scale is attached in order to be able to make the respective format settings with millimeter precision and with little expenditure of time.
  • a driving crank arm is adjusted in a drive machine.
  • the format can be cut to any size between 100 and 500 mm.
  • the working speed of the device in a prototype was around 40 work cycles per minute. Due to the double-use production, this corresponds to an output of 80 mailing bags per minute.
  • the temperature for the longitudinal sealing was approximately 250 ° C for the prototypes for the center seam and for the transverse sealing, while a sealing temperature of approximately 230 ° C was selected in the area of the flaps.
  • the temperatures to be used can be adjusted depending on the material properties and the working speed for optimal effectiveness with minimal use of heating energy.
  • the sealing devices were controlled via a cam disk.
  • the setting of the desired formats for the mailing bags could not only be carried out extremely simply in terms of construction, but also in terms of operation, with fixed format identifiers making it easier to find fixed settings.
  • the surface sealing device 32 is shown in FIG. 3 in the running direction and in FIG. 4 in a top view.
  • a frame slide 52 is provided on rails 51, which can be fixed in position on the rails by means of a clamping screw connection, which is adjusted by an adjusting device, not shown, which is connected to the one shown in FIG 4 indicated racks 53 combs, can be adjusted.
  • the frame slide 52 has three cross sections 54 to 56. Two compressed air cylinders 7 and 58 are fastened to the cross sections 54.
  • the cross profile 55 carries a distributor 59, from which electrical heating lines 60 'and 61' lead to an upper sealing plate 62 and electrical heating lines 63 and 64 to a lower sealing plate 65. For simplification, the heating lines 63 and 64 are only indicated below the frame slide 52.
  • Fig. 4 the running direction of the paper webs is marked with an arrow.
  • the compressed air cylinders 57, 58, 60 and 61 each engage with their piston rod in an articulated manner on a double transverse profile 66 and 67 running across the sealing plate 62.
  • the upper sealing plate 62 can be pressed with the aid of the compressed air cylinders 57, 58, 60 and 61 onto the lower sealing plate 65, which is firmly connected to the frame slide 52.
  • the control of the compressed air valves 57, 58, 60 and 61 takes place via a control valve device 68 which is connected to the compressed air cylinders via pneumatic hoses 69 to 72.
  • the upper sealing plate 62 and the lower sealing plate 65 are approximately the same size and rectangular. Their temperature is regulated thermostatically and can be adjusted.
  • the path control device 42 is shown schematically in FIGS. 5 to 7.
  • a base frame 80 which is firmly connected to the rest of the frame of the device 10, 81 compressed air cylinders 82 and 83 are attached to a cross section.
  • the piston rod of the compressed air cylinder 82 is connected to the axis of a pressure roller 84.
  • the pull roller 84 is inclined outward in the paper web running direction.
  • the compressed air cylinder 83 is connected to the shaft of a pressure roller 85 which is inclined outwards in the direction of the paper path.
  • the pressure rollers 84 and 85 can be brought down by means of the compressed air cylinders 82 and 83 to abut in the region of the outer edge of the lower paper web, this area of engagement of the paper web in each case resting on guide rollers 86 and 87, which are attached to the device and are assigned to one of the respectively assigned ones Pinch roller have the appropriate inclination.
  • a control valve 88 is provided, which is connected via pneumatic lines 89 and 90 to the compressed air cylinder 83 and via pneumatic lines 91 and 92 to the compressed air cylinder 82.
  • photocells 94 and 95 which sense the edge of the paper web, are schematically indicated on the transverse profile 81 above the edge region of the paper web.
  • the photocells 94 and 95 are electrically connected to the control valve 88 in a manner not shown.
  • the photocell 95 emits a signal to a relay via which the compressed air cylinder 83 is actuated via the control valve 88 designed as a solenoid valve.
  • the pressure roller 85 which is originally the same as the pressure roller 84 in an assignment spaced apart from the associated guide rollers 87 and 86, is pressed against the edge of the paper web, the pressure roller pulling the web over to itself due to its inclined position until the run on the photocell 95 is no longer determined.
  • the photocell 94 works in the same way with the compressed air cylinder 82 arranged on the opposite side of the paper web.
  • the respective dwell time of the pressure roller 84 or 85 on the paper web can be determined either by the progress signal coming from the opposite photocell or by a time relay.
  • the inclination of the traction device formed from the pressure rollers and guide rollers can also be changed in an advantageous manner to adapt to the respective conditions.
  • the web guiding device 42 can be used universally for the running control of web materials which tend to run sideways in the transport direction, in particular in a range of ⁇ 10 mm, whereby the web direction can be kept constant with a tolerance of ⁇ 1 mm.
  • a photocell control is also provided with a photocell 96 arranged centrally above the paper web, which is adjustably attached to the frame 80 via a swivel arm 97.
  • the photocell controller 96 responds to a transverse marking 98 in the area of the center seal seam 99 of the upper paper web 14 in order to control the cross-cutting device 45 with precise registration.
  • the appearance of the paper webs in this area can be seen more clearly from FIGS. 10 and 11.
  • the upper paper web 14 is connected to the lower paper web 15 in the longitudinal direction centrally by the longitudinal seam 99 and in the transverse direction by longitudinal seams 100 via the upper air cushion film web 27 and the lower air cushion film web 30.
  • Longitudinal seams 101a, 101b, 102b provided in the edge region merely connect the upper paper web 14 to the upper air film web 27 and the lower paper web 15 to the lower air cushion film web 30 so that the opening area of the mailing bag remains open.
  • the longitudinal sealing device 33 is shown schematically for explanation.
  • the longitudinal sealing device 33 consists of a frame 105 with three transverse profiles 106, 107 and 108.
  • the Frame 105 is firmly connected to the rest of the frame of device 10.
  • Compressed air cylinders 109, 110 and 111 or 112, 113 and 114 are fastened to the transverse profile 106 and to the transverse profile 108, the piston rods of the compressed air cylinders 109 and 112 being articulated on a side sealing strip 115, the piston rods of the compressed air cylinders 110 and 113 being in the center of the web arranged longitudinal sealing bar 116, and wherein the piston rods of the compressed air cylinders 111 and 114 are hinged to a longitudinal sealing bar 117 provided in the other edge region.
  • the common control of the compressed air cylinders is carried out by a central pneumatic control unit 118 in accordance with the cycle, not shown, hose connections.
  • the control unit 118 is attached to the cross section 107.
  • Adjustment devices 120, 121 and 122 which are connected to the compressed air cylinders 109, 110 and 111, are schematically provided on the outside of the cross section 106 in the transport direction.
  • adjustment devices 123, 124 and 125 for the compressed air cylinders 112, 113 and 114 are provided schematically on the outside of the transverse profile 108. All compressed air cylinders are slidably attached to the transverse profiles 106 and 108 and can be adjusted by means of the adjusting devices 120 to 125 transversely to the web running direction indicated by an arrow in FIG. 9.
  • a toothed rack 126 is indicated on the underside of the transverse profile 108, with which pinions of the adjusting devices 121 to 125, which are not shown, engage for adjustment.
  • the sealing strips 115, 116 and 117 are assigned stationary sealing strips 127, 128 and 129, which, like the sealing strips 115 to 117, can be adjusted in their temperature, a thermostat control being provided for the temperature.
  • an adjustable protective device which consists of a PTFE web 130 or 131 that can be wound on the sides of the sealing elements on longitudinal rollers.
  • this protective device the longitudinal sealing surfaces of the longitudinal sealing elements 115 and 117 can be effectively protected against soiling in order to avoid sticking and damage in the pocket opening area. If the contact surface is dirty, only the PTFE web wound on one longitudinal roller needs to be wound further onto the opposite longitudinal roller in order to make a new, flawless effective area available for the longitudinal sealing elements. Since there is no risk of contamination from escaping molten foil in the area of the longitudinal sealing element 116 arranged in the center, no such protective device is provided on this longitudinal sealing strip.
  • this device consists of an intermediate layer made of PTFE which is effective in addition to the longitudinal sealing elements 115 and 117 and which is designed in the form of a so-called PTFE lance.
  • the cooling strips can also be adjusted with regard to their temperature, their system pressure and their dwell time on the paper webs.
  • a thermostat also maintains the desired cooling temperature for the seam cooling devices.
  • the device 10 operates with an adjustable cycle in a production line, the upper paper web 14 and the lower paper web 15 of the covering device 11 successively passing through the devices for producing air cushion mailing bags explained with reference to FIG. 1.
  • short changeover times for format changes can be realized in a double-use production, the device being extremely insusceptible to faults due to the simple design of the individual devices, and sufficient people trained to operate the device.
  • the stresses that occur during sealing in the combination of paper webs and bubble wrap webs are easily mastered, and when changing formats, no cooling strips or sealing strips need to be exchanged due to the inventive concept, because only moving to the respective format size can be reliably achieved with simple means.

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  • Making Paper Articles (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Television Systems (AREA)
  • Packages (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Advancing Webs (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Collation Of Sheets And Webs (AREA)
  • Bedding Items (AREA)
  • Air Bags (AREA)

Abstract

1. Apparatus for producing air-cushion dispatch bags comprising a paper uncoiling means (11), an air-cushion foil uncoiling means (24), at least one longitudinal and one transverse sealing means (33 and 35) for the edge region of each dispatch bag or envelope to be made, a predrawing means (40, 44) for the paper sealed to the air-cushion foil, a means (43, 45) for the cutting of the dispatch bags corresponding to the intended format and a timing control (39) for the production of the dispatch bags, characterized in that the paper uncoiling means (11) is provided for two separate paper webs (14, 15) and the air-cushion foil uncoiling means (24) for two separate air-cushion foil webs (27, 30), that before the longitudinal sealing means (33) an area sealing means (32) is disposed which seals at least over a partial area the two converged paper webs (14, 15) to the two air-cushion foil webs (27, 30) introduced therebetween, that the longitudinal and transverse sealing means (33, 35) are adjustable to correspond to the format and that at least three longitudinal sealing means (35) are provided.

Description

Die Erfindung betrifft eine Vorrichtung zur Herstellung von Luftpolster-Versandtaschen gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for the production of bubble envelopes according to the preamble of claim 1.

Luftpolster-Versandtaschen werden aufgrund ihrer guten Polsterwirkung und ihres relativ geringen Gewichts im zunehmenden Maße für den Postversand von druck- bzw. stoßempfindlichen Produkten verwendet.Due to their good cushioning effect and their relatively low weight, bubble envelopes are increasingly used for the mailing of products that are sensitive to pressure or shock.

Eine derartige Vorrichtung ist bereits aus der DE-OS 2 629 679 bekannt. Diese vorbekannte Vorrichtung besitzt eine Papierabwickeleinrichtung für eine einzige Papierbahn und eine Luftpolsterfolien-Abwickeleinrichtung für eine einzige Luftpolsterfolienbahn, wobei die auf die Papierbahn mittels randseitiger Quersiegelung befestigte Luftpolsterfolienbahn in einer Falzstation zu einem Halbschlauch umgefaltet wird.Such a device is already known from DE-OS 2 629 679. This previously known device has a paper unwinding device for a single paper web and an air-cushion film unwinding device for a single air-cushion film web, the air-cushion film web fastened to the paper web by means of transverse sealing at the edge being folded over into a half-tube in a folding station.

Als nachteilig ist bei dieser vorbekannten Vorrichtung anzusehen, daß damit nur eine Versandtasche in einem Arbeitstakt hergestellt werden kann, die nicht an allen Seiten eine relativ feste Randzone als seitlicher Schutz gegen Stöße aufweist. Ferner ist bei der vorbekannten Vorrichtung das Auftreten eines relativ großen Ausschusses zu verzeichnen, für den das Auftreten von Spannungen beim Versiegeln der Papierbahn mit der Luftpolsterfolienbahn und das anschließende Falten verantwortlich ist. Nachteilig ist ferner, daß eine Formatumstellung bei der herzustellenden Versandtasche nur relativ umständlich und zeitaufwendig vorgenommen werden kann.A disadvantage of this previously known device is that only one mailing bag can be produced in one work cycle, which does not have a relatively firm edge zone on all sides as lateral protection against impacts. Furthermore, in the previously known device, the occurrence of a relatively large broke is recorded, for which the occurrence of tensions during the sealing of the paper web with the bubble wrap web and the subsequent folding is responsible. Another disadvantage is that a format change in the mailing bag to be produced can only be carried out in a relatively complicated and time-consuming manner.

In der DE-OS 2 164 152 ist ein Schutzbehälter und ein Verfahren zur Herstellung in Form einer Versandtasche beschrieben, bei der zwar ein seitliches Randversiegeln offenbart ist, andererseits jedoch aufgrund des Faltvorgangs eine Herstellung von Versandtaschen mit allseitig stabilem Randbereich nicht möglich ist.DE-OS 2 164 152 describes a protective container and a method for producing it in the form of a mailing bag, in which side edge sealing is disclosed, but on the other hand, because of the folding process, it is not possible to produce mailing bags with a stable edge area on all sides.

In der US-PS 3 896 712 ist eine Vorrichtung für das automatische Produzieren von Briefcouverts offenbart, die eine einfache Formatverstellung durch drehbare Ritzel besitzen, welche in ein System mit Zahnstangen und Spindeln eingreift. Ein Bezug zur speziellen Herstellung von Luftpolster-Versandtaschen und den damit verknüpften Problemen fehlt.US Pat. No. 3,896,712 discloses a device for the automatic production of letter envelopes which has a simple format adjustment by means of rotatable pinions which engage in a system with racks and spindles. There is no reference to the special production of bubble envelopes and the associated problems.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Gattung derart weiterzubilden, daß während eines Arbeitstaktes Versandtaschen unterschiedlicher Formate möglichst ausschußarm hergestellt werden können.The invention has for its object to develop a device of the type mentioned in such a way that mailers of different formats can be produced with as few rejects as possible during a work cycle.

Erfindungsgemäß wird diese Aufgabe durch die im Patentanspruch 1 gekennzeichneten Merkmale gelöst.According to the invention, this object is achieved by the features characterized in claim 1.

Bevorzugte Merkmale, die die Erfindung vorteilhaft weiterbilden, sind in den nachgeordneten Patentansprüchen enthalten.Preferred features that advantageously further develop the invention are contained in the subordinate claims.

Aufgrund der erfindungsgemäßen Ausgestaltung wird in vorteilhafter Weise eine Vorrichtung zur Herstellung von Luftpolster-Versandtaschen geschaffen, bei der zwei oder mehrere gepolsterte Versandtaschen in einem Arbeitstakt hergestellt werden können. Dabei tragen die relativ festen Randzonen an jeder Versandtasche, die als seitlicher Schutz gegen Stöße dienen, zur Verringerung des Ausschusses bei der Herstellung bei. Außerdem hat die Versiegelung der Luftpolsterfolie mit der Papierbahn einen wesentlichen Anteil an der Verringerung des Ausschusses und dient damit zur Verbesserung der Betriebssicherheit der beanspruchten Vorrichtung. Die vorgesehene großflächige Versiegelung ermöglicht auch in günstiger Weise eine Verringerung von Spannungen zwischen den Papierbahnen und den Luftpolsterfolienbahnen und trägt damit ebenfalls wesentlich zur Betriebssicherheit der Vorrichtung und der Verringerung des Ausschusses bei. Die Herstellung unterschiedlicher Versandtaschenformate ist aufgrund des Gesamtkonzeptes wesentlich vereinfacht.On account of the configuration according to the invention, an apparatus for producing air cushion mailing bags is advantageously created, in which two or more padded mailing bags can be produced in one work cycle. The relatively firm edge zones on each mailing bag, which serve as lateral protection against impacts, help to reduce the amount of scrap in production. In addition, the sealing of the bubble wrap with the paper web has a significant share in the reduction of rejects and thus serves to improve the operational safety of the claimed device. The large-area sealing provided also advantageously allows a reduction in tensions between the paper webs and the bubble wrap webs and thus also contributes significantly to the operational reliability of the device and the reduction in rejects. The production of different mailing bag formats is considerably simplified due to the overall concept.

Nach einer bevorzugten Ausgestaltung der Erfindung ist vor der Schneideinrichtung eine Bahnlaufsteuereinrichtung für die Korrektur eines Verlaufens der beiden verbundenen Papierbahnen angeordnet, die vorteilhaft zur schnellen und zuverlässigen Fertigung ohne Ausschuß beiträgt, weil vor der Schneideinrichtung eine wirksame Korrektur der mit den eingesiegelten Luftpolsterfolienbahnen verbundenen Papierbahnen erfolgt.According to a preferred embodiment of the invention, a web guiding device for the correction of a course of the two connected paper webs is arranged in front of the cutting device, which advantageously contributes to the fast and reliable production without rejects, because before the cutting device there is an effective correction of the paper webs connected to the sealed air-cushion film webs.

Vorzugsweise sind den Längs- und Quersiegeleinrichtungen jeweils Kühleinrichtungen nachgeordnet, um eine zuverlässige Versiegelung zu gewährleisten und die Fertigungssicherheit weiter zu erhöhen.Cooling devices are preferably arranged downstream of the longitudinal and transverse sealing devices in order to ensure reliable sealing and to further increase manufacturing reliability.

Im Bereich der in Laufrichtung der Papierbahnen randseitig vorgesehenen Taschenöffnungen sind vorzugsweise jeweils eine ein Versiegeln der Taschenöffnungen verhindernde PTFE-Lanze zwischen den beiden Luftpolsterfolienbahnen bei Längssiegelung vorgesehen, wobei überdies bevorzugt beim Längssiegeln der Papierbahn für jede Längssiegeleinrichtung eine an dem jeweiligen Längssiegelelement befestigte, verstellbare und über die Siegelfäche verlaufende aufwickelbare PTFE-Bahn gegen Verschmutzung oder Verkleben vorgesehen ist. Auch diese Maßnahmen tragen zu einer weiteren Verringerung des Ausschusses bei der Herstellung von Luftpolster-Versandtaschen bei.In the area of the pocket openings provided on the edge side in the running direction of the paper webs, a PTFE lance preventing the pocket openings from being sealed is preferably provided between the two air cushion film webs in the case of longitudinal sealing, wherein, in addition, when longitudinally sealing the paper web, for each longitudinal sealing device, one is preferably attached, adjustable, and adjustable for each longitudinal sealing device the sealable surface of the windable PTFE sheet is provided to prevent contamination or sticking. These measures also contribute to a further reduction in the number of rejects in the manufacture of bubble envelopes.

Für eine Anpassung der Vorrichtung an verschiedene Versandtaschenformate sind bei einer bevorzugten Ausgestaltung der Erfindung eine Ablängen-Einstelleinrichtung und eine Einstelleinrichtung für Versandtaschenformate vorgesehen, wobei die Formateinstelleinrichtung Zahnstangen in Laufrichtung und quer zur Laufrichtung der Papierbahn aufweist und wobei die Zahnstangen mit an Siegelelementen der Siegeleinrichtungen und Kühlelementen der Kühleinrichtungen gelagerten Verstellritzel kämmen. Dabei ist es weiterhin günstig, wenn wenigstens für die Einstellungskontrolle des Querformats vorrichtungsfeste Meßskalen beiderseits der Laufrichtung der Papierbahn vorgesehen sind.In a preferred embodiment of the invention, a cut-to-length setting device and a setting device for mailing bag formats are provided for adapting the device to different mailing bag formats, the size setting device having toothed racks in the running direction and transverse to the running direction of the paper web, and the toothed racks also being connected to sealing elements of the sealing devices and cooling elements comb the adjustment pinions mounted on the cooling devices. It is furthermore advantageous if measuring scales fixed to the device are provided on both sides of the running direction of the paper web, at least for the setting control of the landscape format.

Für das Querschneiden der Versandtaschen ist bevorzugt eine Photozellensteuerung zur Abschnittsbestimmung vorgesehen, mit der berührungslos und schnell gearbeitet werden kann.A photocell control for section determination is preferably provided for the cross cutting of the mailing bags, with which touch can be worked easily and quickly.

Der Transport der mit den Luftpolsterfolienbahnen versiegelten Papierbahn erfolgt bevorzugt mittels Zugrollen, die an einer innerhalb der Papierbahn hergestellten Längssiegelnaht und an den seitlichen Rändern der Papierbahn angreifen, wobei vorzugsweise die Bahnlaufsteuerung im Randbereich der versiegelten Papierbahn jeweils eine in Papierbahnlaufrichtung nach außen schräggestellte antriebslose Führungsrolle und eine in Papierbahnlaufrichtung nach außen schräggestellte zugeordnete antriebslose Andruckrolle aufweist, wobei die Andruckrolle nur bei Auslaufen der Papierbahn an dem anderen gegenüberliegenden Rand der Papierbahn angreift und wobei die Andruckdauer der Andruckrolle durch ein Zeitglied einstellbar ist.The transport of the paper web sealed with the bubble wrap webs is preferably carried out by means of traction rollers which engage a longitudinal sealing seam produced within the paper web and on the lateral edges of the paper web, preferably the web guiding in the edge region of the sealed paper web, in each case one driveless guide roller inclined outward in the web running direction and one has associated drive-less pressure roller which is inclined outwards in the paper web running direction, the pressure roller only engaging the other opposite edge of the paper web when the paper web runs out, and the pressure duration of the pressure roller being adjustable by a timer.

Auch für die Ermittlung eines Verlaufens der Papierbahn ist vorteilhaft an jedem Rand eine Photozelle vorgesehen, durch deren Signal das Andrücken der für den anderen gegenüberliegenden Rand vorgesehenen Andruckrolle über einen elektrisch angesteuerten Druckluftzylinder betätigbar ist.For the determination of a course of the paper web, a photocell is advantageously provided on each edge, by means of which signal the pressing of the pressure roller provided for the other opposite edge can be actuated via an electrically controlled compressed air cylinder.

Nach einer bevorzugten Weiterbildung der Vorrichtung ist in Laufrichtung der Papierbahnen vor der Bahnlaufsteuereinrichtung eine Stanzeinrichtung für die Herstellung von Klappenverschlußlöchern und für das Anschrägen der Verschlußklappen angeordnet, wobei die Zahnstangen mit diesen kämmende und zur Einstellung betätigbare Ritzel und eine Meßskala aufweisen. Dies ist nicht nur vorteilhaft für eine einfach aufgebaute und schnell vorzunehmende Anpassung an Formatänderungen, sondern ermöglicht beispielsweise auch die individuelle Einstellung der Lage der Klappenverschlußlöcher.According to a preferred development of the device, a punching device for producing flap closure holes and for chamfering the closure flaps is arranged upstream of the web guiding device in the direction of travel of the paper webs, the toothed racks having pinions which mesh with them and can be actuated for adjustment, and have a measuring scale. This is not only advantageous for an easily constructed and quick adaptation to format changes, but also enables, for example, the individual adjustment of the position of the flap locking holes.

Nachfolgend wird die Erfindung anhand eines Ausführungsbeispiels unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert.The invention is explained in more detail below using an exemplary embodiment with reference to the accompanying drawings.

Es zeigen:

  • Fig. 1 eine Seitenansicht auf eine Vorrichtung zur Herstellung von Luftpolster-Versandtaschen;
  • Fig. 2 eine Draufsicht auf die Vorrichtung gemäß Fig. 1;
  • Fig. 3 einen Schnitt entlang der Schnittlinie 111-111 in Fig. 1;
  • Fig. 4 eine Draufsicht auf die in Fig. 3 dargestellte Flächensiegeleinrichtung;
  • Fig. 5 einen Schnitt entlang der Schnittlinie V-V in Fig. 1 zur Darstellung der Bahnlaufsteuereinrichtung;
  • Fig. 6 eine Draufsicht auf die Bahnlaufsteuereinrichtung gemäß Fig. 5;
  • Fig. 7 eine Seitenansicht der Bahnlaufsteuereinrichtung gemäß Fig. 5;
  • Fig. 8 einen Schnitt entlang der Schnittlinie VIII-VIII in Fig. 1 zur Darstellung der Längssiegeleinrichtung;
  • Fig. 9 eine Draufsicht auf die in Fig. 8 dargestellte Längssiegeleinrichtung;
  • Fig. 10 eine Draufsicht auf einen Ausschnitt aus den versiegelten ungeschnittenen Papierbahnen; und
  • Fig. 11 einen Schnitt entlang der Schnittlinie XI-XI in Fig. 10.
Show it:
  • Figure 1 is a side view of a device for producing air cushion mailers.
  • FIG. 2 shows a top view of the device according to FIG. 1;
  • 3 shows a section along the section line 111-111 in FIG. 1;
  • FIG. 4 shows a plan view of the surface sealing device shown in FIG. 3;
  • 5 shows a section along the section line VV in FIG. 1 to illustrate the web guiding device;
  • FIG. 6 shows a plan view of the web guiding device according to FIG. 5;
  • FIG. 7 shows a side view of the web guiding device according to FIG. 5;
  • 8 shows a section along the section line VIII-VIII in FIG. 1 to show the longitudinal sealing device;
  • FIG. 9 is a top view of the longitudinal sealing device shown in FIG. 8;
  • 10 is a plan view of a section of the sealed, uncut paper webs; and
  • 11 shows a section along the section line XI-XI in FIG. 10.

In den Fig. 1 und 2 ist ein Ausführungsbeispiel einer Vorrichtung 10 zur Herstellung von Luftpolster-Versandtaschen dargestellt. In der Vorrichtung 10 werden die Luftpolster-Versandtaschen aus Papierbahnen und Luftpolsterfolienbahnen zusammengesetzt und durch mehrere Einrichtungen, die in einer Transportrichtung zusammenhängend angeordnet sind, hergestellt.1 and 2, an embodiment of a device 10 for manufacturing air cushion mailers is shown. In the device 10, the air cushion mailing bags are composed of paper webs and air cushion film webs and are produced by a plurality of devices which are arranged contiguously in a transport direction.

Die Darstellung in den Fig. 1 und 2 sind teilweise schematisiert, um die Erläuterung des Aufbaus und der Wirkungsweise der erfindungsgemäßen Vorrichtung zu erleichtern. In Förderrichtung gesehen weist die Vorrichtung 10 zunächst eine Abwickeleinrichtung 11 mit zwei Papierrollen 12 und 13 auf, wobei die Papierrolle 12 die obere Papierbahn für die herzustellenden Versandtaschen und die Papierrolle 13 für die untere Papierbahn 15 der herzustellenden Versandtasche vorgesehen ist. Das Papier ist beschichtet und besteht beispielsweise aus Natronpapier. Die obere Papierbahn 14 und die untere Papierbahn 15 werden durch ein System von Umlenkrollen geführt, die in dem Rahmen 16 angeordnet sind.The illustration in FIGS. 1 and 2 are partially schematic in order to facilitate the explanation of the structure and the mode of operation of the device according to the invention. When viewed in the conveying direction, the device 10 initially has an unwinding device 11 with two paper rolls 12 and 13, the paper roll 12 providing the upper paper web for the mailing bags to be produced and the paper roll 13 for the lower paper web 15 of the mailing bag to be produced. The paper is coated and consists, for example, of soda paper. The upper paper web 14 and the lower paper web 15 are guided by a system of deflection rollers which are arranged in the frame 16.

Es sind ferner zwei Rollen 17 vorgesehen, die ein Fixverschlußband 18 an eine Vorrichtung 31 zur Befestigung des Bandes 18 auf der unteren Bahn 15 liefert, wie später noch beschrieben wird. Oberhalb der Papierrollen 12 und 13 ist in dem Rahmen 16 ein Kran 20 mit Hebelzeug für den Austausch der etwa 800 mm Durchmesser aufweisenden Papierrollen und für den Austausch von Druckzylindern für eine mit 21 bezeichnete Papierbedruckeinrichtung. Die Papierbedruckeinrichtung 21 besteht vorzugsweise aus einem Reflexodruckwerk mit einer Breite von ca. 1270 mm.There are also two rollers 17, which a fixed fastener tape 18 supplies to a device 31 for fastening the tape 18 on the lower web 15, as will be described later. Above the paper rolls 12 and 13 in the frame 16 there is a crane 20 with leverage for the exchange of the paper rolls approximately 800 mm in diameter and for the exchange of printing cylinders for a paper printing device designated with 21. The paper printing device 21 preferably consists of a reflex printing unit with a width of approximately 1270 mm.

Die obere Papierbahn 14 durchläuft die Papierbedruckeinrichtung 21 kontinuierlich und wird danach kontinuierlich von der oberen Hälfte von Papierbahnvorzügen 22 transportiert. Die untere Hälfte dieser Papierbahnvorzüge 22 ist für die kontinuierliche Bewegung der unteren Papierbahn 13 vorgesehen. Die Papierbedruckeinrichtung ist mit einem nicht dargestellten Antrieb in einem Druckwerkständer 23 angeordnet, der mit dem Rahmen 16 der Abwickeleinrichtung 11 sowie der Führungsschiene für den Kran und das Hebelzeug 20 fest verbunden ist.The upper paper web 14 passes through the paper printing device 21 continuously and is then continuously transported by the upper half of paper web advantages 22. The lower half of these paper web advantages 22 is provided for the continuous movement of the lower paper web 13. The paper printing device is arranged with a drive, not shown, in a printing unit stand 23, which is firmly connected to the frame 16 of the unwinding device 11 and the guide rail for the crane and the leverage 20.

In Transportrichtung der Papierbahnen 14 und 15 schließt sich dann eine Abwickeleinrichtung 24 für die Luftpolsterfolienrollen an, in der zwei Doppelabwicklungen mit insgesamt vier Rollen vorgesehen ist. Durch das Vorsehen von Doppelabwicklungen können beim Rollenwechsel keine Stillstandzeiten entstehen. Die Doppelabwicklung 24 ist zudem mit einer nicht dargestellten automatischen Anklebestation versehen, in der das Ende einer Luftpolsterfolienbahn einer Rolle mit dem Anfang der Luftpolsterfolienbahn der anderen Rolle Stoß an Stoß verbunden werden kann. Die Rollen 25 und 26 sind alternativ für die Zuführung der oberen Luftpolsterfolienbahn 27 vorgesehen, während die unteren Rollen 28 und 29 alternativ für das Zuführen der unteren Luftpolsterfolienbahn 30 dienen.In the transport direction of the paper webs 14 and 15, there is then an unwinding device 24 for the bubble wrap rolls, in which two double unwinds with a total of four rolls are provided. Due to the provision of double processes, there can be no downtimes when changing rolls. The double unwinding 24 is also provided with an automatic gluing station, not shown, in which the end of an air cushion film web of one roll can be connected to the beginning of the air cushion film web of the other roll butt to butt. The rollers 25 and 26 are alternatively provided for the supply of the upper bubble film web 27, while the lower rollers 28 and 29 alternatively serve for the supply of the lower bubble film web 30.

Die Vorrichtung 10 ist für eine zweinutzige Herstellung von Versandtaschen vorgesehen. Hierzu werden zwischen die obere Papierbahn 14 und die untere Papierbahn 15 die obere Luftpolsterfolienbahn 27 und die untere Luftpolsterfolienbahn 30 eingeführt, wobei die untere Papierbahn 15 an jeder Seite um die vorgesehene Klappengröße gegenüber der oberen Papierbahn 14 vorsteht. Auf diesem vorstehenden Bereich der unteren Papierbahn 15 wird an der mit 31 bezeichneten Einrichtung jeweils der Fixverschluß 18 abgerollt. Auch die Einrichtung 31 ist fest mit dem Rahmen 16 als Einheit verbunden.The device 10 is intended for two-piece production of mailing bags. For this purpose, the upper air cushion film web 27 and the lower air cushion film web 30 are inserted between the upper paper web 14 and the lower paper web 15, the lower paper web 15 projecting on each side by the intended flap size from the upper paper web 14. In this projecting area of the lower paper web 15, the fixed closure 18 is rolled off at the device designated 31. The device 31 is also permanently connected to the frame 16 as a unit.

Nachdem die beiden Luftpolsterfolienbahnen 27 und 30 in die beiden Papierbahnen 14 und 15 eingeführt worden sind, gelangen sie in eine Flächensiegelungseinrichtung 32 für eine Teil- und/oder Vollflächenversiegelung der Luftpolsterfolienbahnen mit dem Papier. Einzelheiten dieser Flächensiegelungseinrichtung 31 werden noch im Zusammenhang mit den Fig. 3 und 4 beschrieben. Auch der Rahmen dieser Flächensiegelungseinrichtung 32 ist fest und als Einheit mit dem Rahmen 16 verbunden.After the two air cushion film webs 27 and 30 have been inserted into the two paper webs 14 and 15, they arrive in a surface sealing device 32 for partial and / or full surface sealing of the air cushion film webs with the paper. Details of this surface sealing device 31 will be described in connection with FIGS. 3 and 4. The frame of this surface sealing device 32 is also fixed and connected to the frame 16 as a unit.

Nach der Flächensiegelungseinrichtung 32 ist eine Längssiegeleinrichtung 33 vorgesehen, in der entsprechend dem gewählten Format der Versandtaschen eine Heißversiegelung zwischen den beiden Papierbahnen in deren Laufrichtung erfolgt. Einzelheiten dieser Längssiegeleinrichtung werden im Zusammenhang mit den Fig. 8 und 9 erläutert. Auch die Längssiegeleinrichtung 33 weist einen Rahmen auf, der fest mit den Rahmen der übrigen Einrichtungen verbunden ist.After the surface sealing device 32, a longitudinal sealing device 33 is provided, in which, according to the selected format of the mailing bags, a heat seal is carried out between the two paper webs in their running direction. Details of this longitudinal sealing device are explained in connection with FIGS. 8 and 9. The longitudinal sealing device 33 also has a frame which is firmly connected to the frame of the other devices.

Es schließt sich dann weiterhin eine Längskühleinrichtung 34 an, in der wenigstens die noch heiße Siegelnaht in der Mitte der Papierbahn abgekühlt wird. Darauf folgen eine Quersiegelungseinrichtung 35, in der Siegelnähte quer zur Papierbahn entsprechend der vorgesehenen Formatgröße der Versandtasche aufgebracht werden. Die Kühlung dieser heißen Quersiegelnähte wird in der anschließenden Kühleinrichtung 36 vorgenommen. In einer sich daran anschließenden Stanzeinrichtung 37, 38 erfolgt das Stanzen von Löchern in die Verschlußklappe und ein Anschrägen der Verschlußklappen. Die Einrichtungen 34 bis 38 sind ebenfalls auf einem fest mit dem Rahmen 16 verbundenen Rahmen befestigt. Unterhalb der Längskühleinrichtung 34 und der Quersiegelungseinrichtung 35 ist eine Ansteuereinrichtung 39 für den Antrieb und das Synchronisieren der taktweisen Bahnbewegung mit der Wirkung der einzelnen Einrichtungen vorgesehen.This is then followed by a longitudinal cooling device 34, in which at least the still hot sealing seam in the middle of the paper web is cooled. This is followed by a transverse sealing device 35, in which sealing seams are applied transversely to the paper web in accordance with the intended format size of the mailing bag. These hot transverse sealing seams are cooled in the subsequent cooling device 36. In a subsequent punching device 37, 38, holes are punched into the closure flap and the closure flaps are chamfered. The devices 34 to 38 are also fastened on a frame which is fixedly connected to the frame 16. Below the longitudinal cooling device 34 and the transverse sealing device 35, a control device 39 is provided for driving and synchronizing the cyclical path movement with the effect of the individual devices.

Mit 40 ist eine Vorzugswalzenanordnung bezeichnet, bei der jeweils drei Rollen vorgesehen sind, die im Bereich der mittigen Siegelnaht und im Bereich der Versandtaschenklappen angreifen. Zur Abschnittsbestimmung für die zu schneidenden Versandtaschen schließt sich dann eine Photozellensteuerung 41 an, hinter der dann eine Bahnlaufsteuereinrichtung 42 vorgesehen ist. Einzelheiten der Photozellensteuerung zur Abschnittsbestimmung sowie der Bahnsteuereinrichtung werden im Zusammenhang mit den Fig. 5 bis 7 erläutert. Die genannten Einrichtungen befinden sich ebenfalls fest auf einem Rahmen, der mit dem Rahmen 16 einstückig verbunden ist.40 is a preferred roller arrangement, in which three rollers are provided, which act in the area of the central sealing seam and in the area of the mailing bag flaps. A photocell control 41 then follows for determining the section for the mailing bags to be cut, behind which a web guiding device 42 is then provided. Details of the photocell control for section determination and the path control device are explained in connection with FIGS. 5 to 7. The devices mentioned are also fixed on a frame which is integrally connected to the frame 16.

Mit 43 ist ein Rundmesser bezeichnet, mit dem die versiegelten Papierbahnen in der Mitte durchtrennt werden. Ein weiterer Vorzug ist bei 44 vorgesehen. Auch dieser Vorzug ist wie der Vorzug 40 mit Walzen ausgebildet, die erhabene Rollen aufweisen, welche im Siegelnahtbereich beiderseits der verschweißten Papierbahnen angreifen. Mit 45 ist dann eine Querschneideeinrichtung bezeichnet, in der auf der querverlaufenden Siegelnaht entsprechend der Abschnittsteuerung durch die Photozellensteuereinrichtung 41 ein Querabschneiden erfolgt. Den Abschluß der Vorrichtung bildet schließlich eine Ablage 46, auf der die fertig hergestellten Luftpolster-Versandtaschen vereinzelt abgelegt werden. Das Gestell dieser Ablage ist ebenfalls einstückig mit dem restlichen Gestell der Vorrichtung verbunden.43 is a circular knife with which the sealed paper webs are cut in the middle. Another preference is provided at 44. This preference, like the preference 40, is also designed with rollers which have raised rollers which act on both sides of the welded paper webs in the area of the sealed seam. A cross-cutting device is then designated by 45, in which cross-cutting is carried out on the transverse sealing seam in accordance with the section control by the photocell control device 41. Finally, the end of the device is formed by a tray 46 on which the finished air-cushioned mailing bags are placed individually. The frame of this shelf is also integrally connected to the rest of the frame of the device.

Von der Antriebseinrichtung der Vorrichtung 10 ist zur Vereinfachung nur ein Elektromotor 47 unterhalb der Vorzugseinrichtung 40 dargestellt. Der Antrieb der Siegel- Kühl- und Stanzeinrichtungen erfolgt mittels pneumatischer Druckzylinder, die in einem Arbeitstakt beaufschlagt werden, der durch die gewählte Formatgröße und die Vorzugsgeschwindigkeit sowie den an den Siegelelementen vorgesehenen Temperaturen festgelegt ist. Die Vorrichtung kann Formate im Bereich von 100 bis 500 mm bei einer Arbeitsbreite von 1100 mm ohne Werkzeugwechsel herstellen. Hierzu ist für die jeweiligen Einrichtungen eine einfache Verstelleinrichtung vorgesehen, bei der mittels einer Kurbel über rahmenfeste Zahnstangen eine Verstellung der Siegel- und Kühleinrichtungen sowie der Stanzeinrichtungen vorgenommen werden kann, wobei in den Kulissen an beiden Seiten der Siegeleinrichtungen auf der ganzen Länge jeweils ein Maßband bzw. eine Meßskala angebracht ist, um die jeweiligen Formateinstellungen millimetergenau mit geringem Zeitaufwand vornehmen zu können. Zur Einstellung der Abschnittlänge erfolgt die Verstellung einer antreibenden Kurbelschwinge in einer Antriebsmaschine. Die Formatablängung ist beliebig in einem Format zwischen 100 und 500 mm möglich. Die Arbeitsgeschwindigkeit der Vorrichtung lag bei einem Prototyp etwa bei 40 Arbeitstakten pro Minute. Auf Grund der doppelnutzigen Fertigung entspricht das einem Ausstoß von 80 Versandtaschen pro Minute.For simplification, only one electric motor 47 of the drive device of the device 10 is shown below the preferred device 40. The sealing, cooling and punching devices are driven by means of pneumatic pressure cylinders which are actuated in one work cycle, which is determined by the selected format size and the preferred speed as well as the temperatures provided on the sealing elements. The device can produce formats in the range of 100 to 500 mm with a working width of 1100 mm without changing tools. For this purpose, a simple adjustment device is provided for the respective devices, in which the sealing and cooling devices as well as the punching devices can be adjusted by means of a crank via toothed racks fixed to the frame, with a measuring tape or a measuring tape over the entire length in the scenes on both sides a measuring scale is attached in order to be able to make the respective format settings with millimeter precision and with little expenditure of time. To set the section length, a driving crank arm is adjusted in a drive machine. The format can be cut to any size between 100 and 500 mm. The working speed of the device in a prototype was around 40 work cycles per minute. Due to the double-use production, this corresponds to an output of 80 mailing bags per minute.

Die Temperatur für die Längssiegelung betrug bei den Prototypen für die Mittelnaht und für die Quersiegelung etwa 250°C, während im Bereich der Verschlußklappen eine Versiegelungstemperatur von etwa 230°C gewählt wurde. Die jeweils anzuwendenden Temperaturen sind in Abhängigkeit von der Materialbeschaffenheit und der Arbeitsgeschwindigkeit einer optimalen Wirksamkeit bei minimalem Heizenergieeinsatz einstellbar.The temperature for the longitudinal sealing was approximately 250 ° C for the prototypes for the center seam and for the transverse sealing, while a sealing temperature of approximately 230 ° C was selected in the area of the flaps. The temperatures to be used can be adjusted depending on the material properties and the working speed for optimal effectiveness with minimal use of heating energy.

Bei dem gebauten Prototyp wurden die Siegeleinrichtungen über eine Nockenscheibe angesteuert. Die Einstellung der gewünschten Formate für die Versandtaschen konnte durch die vorgesehene Einstellvorrichtung nicht nur konstruktiv außerordentlich einfach, sondern auch leicht in der Bedienung vorgenommen werden, wobei feste Formatkennzeichnungen das Auffinden von festen Einstellungen erleichterten.In the prototype that was built, the sealing devices were controlled via a cam disk. The setting of the desired formats for the mailing bags could not only be carried out extremely simply in terms of construction, but also in terms of operation, with fixed format identifiers making it easier to find fixed settings.

Die Flächensiegelungseinrichtung 32 ist in Fig. 3 in Laufrichtung und in Fig. 4 in einer Draufsicht dargestellt. Auf einem Rahmen 50, der fest in dem Rahmen der Vorrichtung 10 integriert ist, ist auf Schienen 51 ein Rahmenschlitten 52 vorgesehen, der auf den Schienen mittels einer Spannverschraubung in einer Stellung fixierbar ist, die durch eine nicht dargestellte Verstelleinrichtung, die mit dem in Fig. 4 angedeuteten Zahnstangen 53 kämmt, eingestellt werden kann.The surface sealing device 32 is shown in FIG. 3 in the running direction and in FIG. 4 in a top view. On a frame 50, which is firmly integrated in the frame of the device 10, a frame slide 52 is provided on rails 51, which can be fixed in position on the rails by means of a clamping screw connection, which is adjusted by an adjusting device, not shown, which is connected to the one shown in FIG 4 indicated racks 53 combs, can be adjusted.

Der Rahmenschlitten 52 besitzt drei Querprofile 54 bis 56. An den Querprofilen 54 sind zwei Druckluftzylinder 7 und 58 befestigt. Das Querprofil 55 trägt einen Verteiler 59, aus dem elektrische Heizleitungen 60' und 61' zu einer oberen Siegelplatte 62 und elektrische Heizleitungen 63 und 64 zu einer unteren Siegelplatte 65 führen. Die Heizleitungen 63 und 64 sind zur Vereinfachung nur unterhalb des Rahmenschlittens 52 angedeutet.The frame slide 52 has three cross sections 54 to 56. Two compressed air cylinders 7 and 58 are fastened to the cross sections 54. The cross profile 55 carries a distributor 59, from which electrical heating lines 60 'and 61' lead to an upper sealing plate 62 and electrical heating lines 63 and 64 to a lower sealing plate 65. For simplification, the heating lines 63 and 64 are only indicated below the frame slide 52.

In Fig. 4 ist die Laufrichtung der Papierbahnen mit einem Pfeil gekennzeichnet. Die Druckluftzylinder 57, 58, 60 und 61 greifen jeweils mit ihrer Kolbenstange an ein quer über die Siegelplatte 62 verlaufendes Doppelquerprofil 66 bzw. 67 gelenkig an. Die obere Siegelplatte 62 läßt sich mit Hilfe der Druckluftzylinder 57, 58, 60 und 61 auf die untere Siegelplatte 65 drücken, welche mit dem Rahmenschlitten 52 fest verbunden ist. Die Ansteuerung der Druckluftventile 57, 58, 60 und 61 erfolgt über eine Steuerventileinrichtung 68, die über Pneumatikschläuche 69 bis 72 mit den Druckluftzylindern verbunden ist.In Fig. 4 the running direction of the paper webs is marked with an arrow. The compressed air cylinders 57, 58, 60 and 61 each engage with their piston rod in an articulated manner on a double transverse profile 66 and 67 running across the sealing plate 62. The upper sealing plate 62 can be pressed with the aid of the compressed air cylinders 57, 58, 60 and 61 onto the lower sealing plate 65, which is firmly connected to the frame slide 52. The control of the compressed air valves 57, 58, 60 and 61 takes place via a control valve device 68 which is connected to the compressed air cylinders via pneumatic hoses 69 to 72.

Die obere Siegelplatte 62 und die untere Siegelplatte 65 sind etwa gleich groß und rechteckförmig ausgebildet. Ihre Temperatur ist thermostatisch geregelt und läßt sich einstellen.The upper sealing plate 62 and the lower sealing plate 65 are approximately the same size and rectangular. Their temperature is regulated thermostatically and can be adjusted.

Die Bahnsteuereinrichtung 42 ist schematisch in den Fig. 5 bis 7 dargestellt. An einem Grundrahmen 80, der fest mit dem restlichen Rahmen der Vorrichtung 10 verbunden ist, sind an einem Querprofil 81 Druckluftzylinder 82 und 83 befestigt. Die Kolbenstange des Druckluftzylinders 82 steht in Verbindung mit der Achse einer Andruckrolle 84. Die Zugrolle 84 ist in Papierbahnlaufrichtung nach außen schräg gestellt. In gleicher Weise ist der Druckluftzylinder 83 mit der Welle einer Andruckrolle 85 verbunden, die in Papierlaufbahnrichtung nach außen schräg gestellt ist. Die Andruckrollen 84 bzw. 85 können mittels der Druckluftzylinder 82 bzw. 83 nach unten zur Anlage im Bereich des äußeren Randes der unteren Papierbahn gebracht werden, wobei dieser Angriffsbereich der Papierbahn jeweils auf vorrichtungsfest angebrachten Führungsrollen 86 bzw. 87 aufliegt, die eine der jeweils zugeordneten Andruckrolle entsprechende Schrägstellung aufweisen. Zur Ansteuerung der Druckluftventile 82 bzw. 83 ist ein Steuerventil 88 vorgesehen, das über Pneumatikleitungen 89 und 90 mit dem Druckluftzylinder 83 und über Pneumatikleitungen 91 und 92 mit dem Druckluftzylinder 82 verbunden ist.The path control device 42 is shown schematically in FIGS. 5 to 7. On a base frame 80, which is firmly connected to the rest of the frame of the device 10, 81 compressed air cylinders 82 and 83 are attached to a cross section. The piston rod of the compressed air cylinder 82 is connected to the axis of a pressure roller 84. The pull roller 84 is inclined outward in the paper web running direction. In the same way, the compressed air cylinder 83 is connected to the shaft of a pressure roller 85 which is inclined outwards in the direction of the paper path. The pressure rollers 84 and 85 can be brought down by means of the compressed air cylinders 82 and 83 to abut in the region of the outer edge of the lower paper web, this area of engagement of the paper web in each case resting on guide rollers 86 and 87, which are attached to the device and are assigned to one of the respectively assigned ones Pinch roller have the appropriate inclination. To control the compressed air valves 82 and 83, a control valve 88 is provided, which is connected via pneumatic lines 89 and 90 to the compressed air cylinder 83 and via pneumatic lines 91 and 92 to the compressed air cylinder 82.

Wie sich im Zusammenhang mit den Fig. 6 und 7 ergibt, in denen die Laufrichtung der Papierbahn durch einen Pfeil angedeutet ist, sind an dem Querprofil 81 oberhalb des Randbereichs der Papierbahn schematisch angedeutete Photozellen 94 und 95 vorgesehen, die den Rand der Papierbahn abfühlen. Die Photozellen 94 und 95 sind in nicht dargestellter Weise elektrisch mit dem Steuerventil 88 verbunden. Bei einem Verlaufen der Papierbahn nach einer Seite, beispielsweise in Fig. 6 in Laufrichtung nach rechts, gibt die Photozelle 95 ein Signal an ein Relais ab, über das der Druckluftzylinder 83 über das als Magnetventil ausgebildete Steuerventil 88 angesteuert wird. Hierdurch wird die Andruckrolle 85, die sich ursprünglich ebenso sie die Andruckrolle 84 in einer von den zugeordneten Führungsrollen 87 bzw. 86 beabstandeten Zuordnung befindet, zur Anlage an den Rand der Papierbahn gedrückt, wobei die Andruckrolle auf Grund ihrer Schrägstellung die Bahn zu sich herüber zieht, bis das Verlaufen an der Photozelle 95 nicht mehr festgestellt wird. In gleicher Weise arbeitet die Photozelle 94 mit dem auf der gegenüberliegenden Seite der Papierbahn angeordneten Druckluftzylinder 82 zusammen. Die jeweilige Verweildauer der Andruckrolle 84 bzw. 85 auf der Papierbahn kann entweder durch das von der gegenüberliegenden Photozelle stammende Verlauf-Signal oder durch ein Zeitrelais festgelegt werden. Weiterhin kann in vorteilhafter Weise auch die Schrägstellung der aus den Andruckrollen und Führungsrollen gebildeten Zugeinrichtung zur Anpassung an die jeweiligen Verhältnisse geändert werden.As can be seen in connection with FIGS. 6 and 7, in which the running direction of the paper web is indicated by an arrow, photocells 94 and 95, which sense the edge of the paper web, are schematically indicated on the transverse profile 81 above the edge region of the paper web. The photocells 94 and 95 are electrically connected to the control valve 88 in a manner not shown. When the paper web runs to one side, for example in the direction of rotation to the right in FIG. 6, the photocell 95 emits a signal to a relay via which the compressed air cylinder 83 is actuated via the control valve 88 designed as a solenoid valve. As a result, the pressure roller 85, which is originally the same as the pressure roller 84 in an assignment spaced apart from the associated guide rollers 87 and 86, is pressed against the edge of the paper web, the pressure roller pulling the web over to itself due to its inclined position until the run on the photocell 95 is no longer determined. The photocell 94 works in the same way with the compressed air cylinder 82 arranged on the opposite side of the paper web. The respective dwell time of the pressure roller 84 or 85 on the paper web can be determined either by the progress signal coming from the opposite photocell or by a time relay. Furthermore, the inclination of the traction device formed from the pressure rollers and guide rollers can also be changed in an advantageous manner to adapt to the respective conditions.

Die Bahnlaufsteuerungseinrichtung 42 läßt sich universell für die Laufkontrolle von Bahnmaterialien verwenden, welche in Transportrichtung zum seitlichen Verlaufen neigen, insbesondere in einem Bereich von ±10 mm, wobei die Bahnrichtung mit einer Toleranz von ±1 mm konstant gehalten werden kann.The web guiding device 42 can be used universally for the running control of web materials which tend to run sideways in the transport direction, in particular in a range of ± 10 mm, whereby the web direction can be kept constant with a tolerance of ± 1 mm.

In Fig. 6 ist weiterhin eine Photozellensteuerung mit einer mittig über der Papierbahn angeordneten Photozelle 96 vorgesehen, die über einen Schwenkarm 97 einstellbar an dem Rahmen 80 befestigt ist. Die Photozellensteuerung 96 spricht auf eine Quermarkierung 98 im Bereich der Mittelsiegelnaht 99 der oberen Papierbahn 14 an, um eine passergenaue Steuerung der Querschneideeinrichtung 45 vorzunehmen. Das Aussehen der Papierbahnen in diesem Bereich geht deutlicher aus den Fig. 10 und 11 hervor. Die obere Papierbahn 14 ist über die obere Luftpolsterfolienbahn 27 und die untere Luftpolsterfolienbahn 30 mit der unteren Papierbahn 15 in Längsrichtung mittig durch die Längsnaht 99 und in Querrichtung durch Längsnähte 100 miteinander verbunden. Im Randbereich vorgesehene Längsnähte 101 a, 101 b, 102b verbinden lediglich jeweils die obere Papierbahn 14 mit der oberen Luftfolienbahn 27 bzw. die untere Papierbahn 15 mit der unteren Luftpolsterfolienbahn 30, damit der Öffnungsbereich der Versandtasche offen bleibt. Auf den an beiden Seiten über die obere Papierbahn 14 hinausragenden Abschnitten der unteren Papierbahn 15, die jeweils für die Verschlußklappen vorgesehen sind, sind von der Fixverschlußabrolleinrichtung 31 aufgebrachte Fixverschlüsse 103 befestigt.In FIG. 6, a photocell control is also provided with a photocell 96 arranged centrally above the paper web, which is adjustably attached to the frame 80 via a swivel arm 97. The photocell controller 96 responds to a transverse marking 98 in the area of the center seal seam 99 of the upper paper web 14 in order to control the cross-cutting device 45 with precise registration. The appearance of the paper webs in this area can be seen more clearly from FIGS. 10 and 11. The upper paper web 14 is connected to the lower paper web 15 in the longitudinal direction centrally by the longitudinal seam 99 and in the transverse direction by longitudinal seams 100 via the upper air cushion film web 27 and the lower air cushion film web 30. Longitudinal seams 101a, 101b, 102b provided in the edge region merely connect the upper paper web 14 to the upper air film web 27 and the lower paper web 15 to the lower air cushion film web 30 so that the opening area of the mailing bag remains open. On the sides of the lower paper web 15 projecting on both sides of the upper paper web 15, which are each provided for the closure flaps, fixed closures 103 attached by the fixed closure unwinding device 31 are fastened.

In den Fig. 8 und 9 ist die Längssiegeleinrichtung 33 schematisch zur Erläuterung dargestellt. Die Längssiegeleinrichtung 33 besteht aus einem Gestell 105 mit drei Querprofilen 106, 107 und 108. Der Rahmen 105 ist fest mit dem restlichen Rahmen der Vorrichtung 10 verbunden. An dem Querprofil 106 und an dem Querprofil 108 sind jeweils Druckluftzylinder 109,110 und 111 bzw.112,113 und 114befestigt, wobei die Kolbenstangen der Druckluftzylinder 109 und 112 an einer seitlichen Siegelleiste 115 angelenkt sind, wobei die Kolbenstangen der Druckluftzylinder 110 und 113 an einer in der Bahnmitte angeordneten Längssiegelleiste 116 angelenkt sind, und wobei die Kolbenstangen der Druckluftzylinder 111 und 114 an einer im anderen Randbereich vorgesehenen Längssiegelleiste 117 angelenkt sind. Die gemeinsame Ansteuerung der Druckluftzylinder wird durch eine zentrale pneumatische Steuereinheit 118 über nicht dargestellte Schlauchverbindungen taktentsprechend vorgenommen. Die Steuereinheit 118 ist an dem Querprofil 107 befestigt.8 and 9, the longitudinal sealing device 33 is shown schematically for explanation. The longitudinal sealing device 33 consists of a frame 105 with three transverse profiles 106, 107 and 108. The Frame 105 is firmly connected to the rest of the frame of device 10. Compressed air cylinders 109, 110 and 111 or 112, 113 and 114 are fastened to the transverse profile 106 and to the transverse profile 108, the piston rods of the compressed air cylinders 109 and 112 being articulated on a side sealing strip 115, the piston rods of the compressed air cylinders 110 and 113 being in the center of the web arranged longitudinal sealing bar 116, and wherein the piston rods of the compressed air cylinders 111 and 114 are hinged to a longitudinal sealing bar 117 provided in the other edge region. The common control of the compressed air cylinders is carried out by a central pneumatic control unit 118 in accordance with the cycle, not shown, hose connections. The control unit 118 is attached to the cross section 107.

An der Außenseite des Querprofils 106 sind in Transportrichtung schematisch Verstelleinrichtungen 120, 121 und 122 vorgesehen, die mit den Druckluftzylindern 109, 110 und 111 verbunden sind. In gleicher Weise sind außen an dem Querprofil 108 schematisch Verstelleinrichtungen 123, 124 und 125 für die Druckluftzylinder 112, 113 und 114 vorgesehen. Alle Druckluftzylinder sind an den Querprofilen 106 bzw. 108 verschiebbar angebracht und können mittels der Verstelleinrichtungen 120 bis 125 quer zu der in Fig. 9 mit einem Pfeil angegebenen Bahnlaufrichtung eingestellt werden. In Fig. 8 ist an der Unterseite des Querprofils 108 eine Zahnstange 126 angedeutet, mit der nicht dargestellte Ritzel der Einstelleinrichtungen 121 bis 125 zur Verstellung angreifen.Adjustment devices 120, 121 and 122, which are connected to the compressed air cylinders 109, 110 and 111, are schematically provided on the outside of the cross section 106 in the transport direction. In the same way, adjustment devices 123, 124 and 125 for the compressed air cylinders 112, 113 and 114 are provided schematically on the outside of the transverse profile 108. All compressed air cylinders are slidably attached to the transverse profiles 106 and 108 and can be adjusted by means of the adjusting devices 120 to 125 transversely to the web running direction indicated by an arrow in FIG. 9. In FIG. 8, a toothed rack 126 is indicated on the underside of the transverse profile 108, with which pinions of the adjusting devices 121 to 125, which are not shown, engage for adjustment.

Den Siegelleisten 115, 116 und 117 sind stationäre Siegelleisten 127, 128 und 129 zugeordnet, die ebenso wie die Siegelleisten 115 bis 117 in ihrer Temperatur einstellbar sind, wobei eine Thermostatregelung für die Temperatur vorgesehen ist.The sealing strips 115, 116 and 117 are assigned stationary sealing strips 127, 128 and 129, which, like the sealing strips 115 to 117, can be adjusted in their temperature, a thermostat control being provided for the temperature.

Im Bereich der Siegelfläche der Siegelleisten 115 und 117 ist eine verstellbare Schutzeinrichtung vorgesehen, die aus einer jeweils an den Seiten der Siegelelemente auf Längswalzen aufwickelbarer PTFE-Bahn 130 bzw. 131 besteht. Durch diese Schutzeinrichtung können die Längssiegelflächen der Längssiegelelemente 115 und 117 wirkungsvoll gegen Verschmutzung geschützt werden, um ein Verkleben und eine Beschädigung im Taschenöffnungsbereich zu vermeiden. Falls die Kontaktfläche verschmutzt ist, braucht nur die auf einer Längswalze aufgewickelte PTFE-Bahn weiter auf die gegenüberliegende Längswalze weiter aufgewickelt zu werden, um einen neuen einwandfreien Wirkungsbereich für die Längssiegelelemente verfügbar zu machen. Da im Bereich des mittig angeordneten Längssiegelelements 116 nicht die Gefahr einer Verschmutzung durch austretende geschmolzene Folie besteht, ist an dieser Längssiegelleiste keine derartige Schutzvorrichtung vorgesehen.In the area of the sealing surface of the sealing strips 115 and 117, an adjustable protective device is provided, which consists of a PTFE web 130 or 131 that can be wound on the sides of the sealing elements on longitudinal rollers. With this protective device, the longitudinal sealing surfaces of the longitudinal sealing elements 115 and 117 can be effectively protected against soiling in order to avoid sticking and damage in the pocket opening area. If the contact surface is dirty, only the PTFE web wound on one longitudinal roller needs to be wound further onto the opposite longitudinal roller in order to make a new, flawless effective area available for the longitudinal sealing elements. Since there is no risk of contamination from escaping molten foil in the area of the longitudinal sealing element 116 arranged in the center, no such protective device is provided on this longitudinal sealing strip.

Damit im Taschenöffnungsbereich kein Verkleben der in Fig. 11 dargestellten Längsnähte 101 a und 101 b bzw. 102a und 102b stattfindet, ist an dem Rahmen 105 eine ein Versiegeln verhindernde Einrichtung an beiden Seiten der Papierbahnen vorgesehen. Wie in Fig. 8 angedeutet, besteht diese Einrichtung aus einer neben den Längssiegelelementen 115 bzw. 117 wirksam werdenden Zwischenschicht aus PTFE, die in Form einer sogenannten PTFE-Lanze ausgebildet ist.In order that the longitudinal seams 101a and 101b or 102a and 102b shown in FIG. 11 do not stick in the pocket opening area, a device preventing sealing is provided on both sides of the paper webs. As indicated in FIG. 8, this device consists of an intermediate layer made of PTFE which is effective in addition to the longitudinal sealing elements 115 and 117 and which is designed in the form of a so-called PTFE lance.

Ebenso wie die einzelnen Siegelleisten sind auch die Kühlleisten hinsichtlich ihrer Temperatur, ihres Anlagedruckes sowie ihrer Verweildauer auf den Papierbahnen einstellbar. Ein Thermostat sorgt auch bei den Nahtkühleinrichtungen für eine Beibehaltung der gewünschten Kühltemperatur.Just like the individual sealing strips, the cooling strips can also be adjusted with regard to their temperature, their system pressure and their dwell time on the paper webs. A thermostat also maintains the desired cooling temperature for the seam cooling devices.

Die Vorrichtung 10 arbeitet mit einem einstellbaren Takt in einer Fertigungslinie, wobei die obere Papierbahn 14 und die untere Papierbahn 15 von der Abdeckeinrichtung 11 nacheinander die unter Bezugnahme auf die Fig. 1 erläuterten Einrichtungen zur Herstellung von Luftpolster-Versandtaschen durchlaufen. Auf Grund der erfindungsgemäßen Konzeption können bei einer doppelnutzigen Fertigung kurze Umstellzeiten für Formatänderungen verwirklicht werden, wobei die Vorrichtung auf Grund der einfach aufgebauten einzelnen Einrichtungen außerordentlich störunanfällig ist und für den Betrieb der Vorrichtung angelernte Personen ausreichen. Es treten weder Transportprobleme noch Versiegelungspuren oder dgl. auf, wodurch der Ausschuß bei der Fertigung minimiert wird. Die beim Versiegeln auftretenden Spannungen in dem Verbund aus Papierbahnen und Luftpolsterfolienbahnen werden problemlos beherrscht, und bei Formatwechsel brauchen auf Grund der erfindungsgemäßen Konzeption keine Kühlleisten oder Siegelleisten ausgetauscht zu werden, weil lediglich ein Verschieben auf die jeweilige Formatgröße mit einfachen Mitteln zuverlässig erreicht werden kann.The device 10 operates with an adjustable cycle in a production line, the upper paper web 14 and the lower paper web 15 of the covering device 11 successively passing through the devices for producing air cushion mailing bags explained with reference to FIG. 1. On the basis of the concept according to the invention, short changeover times for format changes can be realized in a double-use production, the device being extremely insusceptible to faults due to the simple design of the individual devices, and sufficient people trained to operate the device. There are no transport problems or traces of sealing or the like, which minimizes rejects during production. The stresses that occur during sealing in the combination of paper webs and bubble wrap webs are easily mastered, and when changing formats, no cooling strips or sealing strips need to be exchanged due to the inventive concept, because only moving to the respective format size can be reliably achieved with simple means.

Claims (11)

1. Apparatus for producing air-cushion dispatch bags comprising a paper uncoiling means (11), an air-cushion foil uncoiling means (24), at least one longitudinal and one transverse sealing means (33 and 35) for the edge region of each dispatch bag or envelope to be made, a predrawing means (40, 44) for the paper sealed to the air-cushion foil, a means (43, 45) for the cutting of the dispatch bags corresponding to the intended format and a timing control (39) for the production of the dispatch bags, characterized in that the paper uncoiling means (11) is provided for two separate paper webs (14, 15) and the air-cushion foil uncoiling means (24) for two separate air-cushion foil webs (27, 30), that before the longitudinal sealing means (33) an area sealing means (32) is disposed which seals at least over a partial area the two converged paper webs (14, 15) to the two air-cushion foil webs (27, 30) introduced therebetween, that the longitudinal and transverse sealing means (33, 35) are adjustable to correspond to the format and that at least three longitudinal sealing means (35) are provided.
2. Apparatus according to claim 1, characterized in that before the cutting means (43, 45) a web running control means (42) is arranged for the correction of a misrunning of the two connected paper webs (14, 15).
3. Apparatus according to claim 1 or 2, characterized in that the longitudinal and transverse sealing means (33, 35) are each followed by cooling means (34, 36).
4. Apparatus according to any one of the preceding claims, characterized in that in the region of the bag openings provided on the edge side in the running direction of the paper webs (14, 15) in each case a PTFE lance (132, 133) preventing a sealing of the bag openings is provided between the two air-cushion foil webs (27, 30) in longitudinal sealing.
5. Apparatus according to any one of the preceding claims, characterized in that for longitudinal sealing of the paper webs (14, 15) for each longitudinal sealing means (35) an adjustable coilable PTFE web secured to the respective longitudinal sealing element (115, 117) and running over the sealing surface is provided for protection against soiling or sticking.
6. Apparatus according to any one of the preceding claims, characterized in that an adjusting means (96, 97) for the cut-off lengths and an adjusting means (120, 125) for dispatch bag formats are provided, the format setting means including toothed racks in the running direction and transversely (126) of the running direction of the paper webs (14, 15) and the racks meshing with adjusting pinions mounted on sealing elements (115, 116, 117) of the sealing means (33, 35) and cooling elements of the cooling means (34, 36).
7. Apparatus according to any one of the preceding claims, characterized in that for the transverse cutting of the dispatch bags a photocell control is provided for section determination.
8. Apparatus according to any one of the preceding claims, characterized in that for the transport of the paper webs (14, 15) sealed to the air-cushion foil webs (27, 30) tension rollers (40, 44) are provided which engage at a longitudinal seal seam (99) made within the paper web and the lateral edges of the paper web (15).
9. Apparatus according to any one of claims 2 to 8, characterized in that the web running control means (42) has a driveless guide roller (86, 87) outwardly inclined in the paper web running direction and an associated driveless application roller (84, 85) outwardly inclined in the paper web running direction in the edge region, the application or pressure roller (84, 85) engaging the other opposite edge of the paper web only on exit of the paper web (15) and the pressure duration of the application roller (84, 85) being adjustable by a timing member.
10. Apparatus according to any one of claims 2 to 9, characterized in that for the misrunning of the paper web (15) at each edge a photocell (94, 95) is provided, by the signals of said cells the application of the application roller (84, 85) provided for the other opposite edge is actuable via an electrically driven compressed-air cylinder (82, 83).
11. Apparatus according to any one of claims 2 to 10, characterized in that in the running direction of the paper webs (14, 15) in front of the web running control means (42) a punching means (37, 38) for the formation of flap closure holes and for the bevelling of the closure flaps is disposed which comprises toothed racks, pinions meshing therewith and actuable for the adjustment and a measuring scale.
EP87104267A 1986-04-10 1987-03-23 Device for the production of air cushion mailing bags Expired EP0240827B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87104267T ATE48254T1 (en) 1986-04-10 1987-03-23 DEVICE FOR THE MANUFACTURE OF AIR CUSHIONING BAGS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863612136 DE3612136A1 (en) 1986-04-10 1986-04-10 DEVICE FOR MANUFACTURING AIR PILLOW SHIPPING BAGS
DE3612136 1986-04-10

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EP0240827A1 EP0240827A1 (en) 1987-10-14
EP0240827B1 true EP0240827B1 (en) 1989-11-29

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US (1) US5021039A (en)
EP (1) EP0240827B1 (en)
JP (1) JPS637A (en)
AT (1) ATE48254T1 (en)
CA (1) CA1286136C (en)
DE (2) DE3612136A1 (en)
DK (1) DK170766B1 (en)
ES (1) ES2012066B3 (en)
FI (1) FI83494C (en)
NO (1) NO170064C (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6789376B1 (en) 1999-09-22 2004-09-14 Pactiv Corporation Method and machine for the manufacture of air pillows
US8627637B2 (en) 1999-09-22 2014-01-14 Pregis Innovative Packaging, Inc. Method and machine for the manufacture of air pillows
US6932134B2 (en) 2003-02-07 2005-08-23 Pactiv Corporation Devices and methods for manufacturing packaging materials
US7347911B2 (en) 2003-02-07 2008-03-25 Pregis Innovative Packaging Inc. Devices and methods for manufacturing packaging materials
US8906478B2 (en) 2005-05-06 2014-12-09 Pregis Innovative Packaging, Inc. Films for inflatable cushions
CN105329546A (en) * 2015-11-10 2016-02-17 浙江天鸿传动机械有限公司 Three-dimensional air column bag and production equipment

Also Published As

Publication number Publication date
DE3761038D1 (en) 1990-01-04
FI871443A (en) 1987-10-11
DK180287A (en) 1987-10-11
ATE48254T1 (en) 1989-12-15
CA1286136C (en) 1991-07-16
JPS637A (en) 1988-01-05
DE3612136A1 (en) 1987-10-15
DK170766B1 (en) 1996-01-15
EP0240827A1 (en) 1987-10-14
NO170064C (en) 1992-09-09
FI83494C (en) 1991-07-25
DK180287D0 (en) 1987-04-08
NO871418D0 (en) 1987-04-06
DE3612136C2 (en) 1989-04-20
FI83494B (en) 1991-04-15
NO871418L (en) 1987-10-12
US5021039A (en) 1991-06-04
FI871443A0 (en) 1987-04-02
NO170064B (en) 1992-06-01
ES2012066B3 (en) 1990-03-01

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