EP1897817A2 - Bag with carrier handle and method and device for manufacturing the bag - Google Patents

Abstract

Bag (1) comprises a base (3) and a handle (6) covered with a closed covering leaf (5) which is provided with passages and longitudinal perforations on both sides of the region of the handle between the ends (7, 8). Independent claims are also included for the following: (1) Method for the production of a bag; and (2) Device for carrying out the above process. Preferred Features: The covering leaf has a printed field.

Description

The invention relates to a bag according to the preamble of claim 1 and a method and an apparatus for producing the bag.

From the EP 0 553 693 A2 is a bag for packaging purposes known, the bottom is provided with a carrying handle. The ends of the handle can be glued by means of tabs to the ground; a sheet may also be glued over the carrying handle, which is provided with a pre-punched opening through which the carrying handle protrudes. The open projecting handle can be particularly annoying when storing the filled bag. In addition, the leaves in the EP 0 553 693 A2 production of the bag described an automated production not.

From the DE 20 2006 004 476 U1 a bag is known, on whose bottom a cover sheet is attached. Through two incisions in the cover sheet a carrying handle is formed. This embodiment requires a cover sheet of very stable material. Furthermore, between the carrying handle and the bottom of the bag no sufficient space for engagement of the user's hand is provided.

From the EP 0 900 741 A1 a bag is known which is provided with a carrying loop for carrying the filled bag. In addition, a carrying device is provided with a handle, which serves to hold the bag during a Füllgutentnahme.

The invention has for its object to design a bag of the generic type so that the handle does not interfere with storage, but is easily accessible and can be provided in the region of its provided with the handle bottom with the necessary labels, and a method and a Specify device for producing this bag.

This object is achieved in a bag according to the preamble of claim 1 by the features in its identification part. The carrying handle is hidden under the cover sheet, so it does not interfere with the storage of the goods. The cover sheet can be printed closed with a necessary label, which can be attached twice, so that - no matter which side of the bag is stored - the title block is readable. There is enough space for a label. By simply tearing the cover sheet in the area formed by the perforation of the handle is accessible.

The method of claim 3 is a very simple solution according to the invention again, as the carrying handle can be made with cover sheet itself and attached to the bottom of a prefabricated unfilled bag. Claim 6 represents a particularly advantageous simple device that can be associated with an existing bag manufacturing device.

The dependent claims give preferred developments again.

Fig. 1

eine perspektivische Darstellung eines Beutels mit geschlossenem Deckblatt und darunter befindlichem Tragegriff auf dem Boden,

Fig. 2

eine perspektivische Darstellung des Beutels nach Fig. 1 mit teilweise freigelegtem Tragegriff,

Fig. 3

eine perspektivische Darstellung des Beutels mit freigelegtem und hochgezogenem Tragegriff,

Fig. 4

einen Vertikalschnitt durch den Tragegriff in der Darstellung gemäß Fig. 3,

Fig. 5

gefüllte Beutel in einem Regal,

Fig. 6

eine schematische Darstellung einer Vorrichtung zum Herstellung und Zuführen von Deckblättern und Tragegriffen zu bereits hergestellten Beuteln,

Fig. 7

eine Teilvergrößerung aus Fig. 6 entsprechend der dortigen Angabe VII und

Fig. 8

eine schematische Darstellung des Arbeitsablaufs auf einer erfindungsgemäßen Vorrichtung in Draufsicht.

Further advantages, features and details of the invention will become apparent from the following description of an embodiment with reference to the drawing. It shows

Fig. 1

a perspective view of a bag with closed cover sheet and underlying handle on the floor,

Fig. 2

1 is a perspective view of the bag according to FIG. 1 with a partially exposed carrying handle;

Fig. 3

a perspective view of the bag with exposed and raised handle,

Fig. 4

a vertical section through the carrying handle in the illustration of FIG. 3,

Fig. 5

filled bags on a shelf,

Fig. 6

a schematic representation of an apparatus for producing and supplying cover sheets and handles to already made bags,

Fig. 7

a partial enlargement of Fig. 6 according to the indication there VII and

Fig. 8

a schematic representation of the workflow on a device according to the invention in plan view.

The package shown in Figs. 1-5 is a bag 1 for packaging purposes, preferably a paper bag with gussets 2 closed at one end with a bottom 3 which is one Log soil acts. Of course can also be provided a cross bottom, in which case no gussets are present. The bottom 4 shown in the drawing below is still open after the production of the bag 1 and is closed only after the bag 1 has been filled. The closed bottom 3 is covered with a cover sheet 5, below which a strip-shaped carrying handle 6 made of tear-resistant paper, thin cardboard or plastic is arranged on the bottom 3. This carrying handle 6 is glued in the region of its ends 7, 8 with the bottom 3 and optionally with the cover sheet 5. The cover sheet 5 is provided with two parallel to the longitudinal edges 9, 10 of the handle 6 extending cross-sections 11, 12 and a central connecting this optionally continuous longitudinal perforation 13. The transverse cuts 11, 12 may also be formed by longitudinal perforations. Thus, it is about partial or complete severing of the cover sheet 5. If the cover sheet 5 is torn along the longitudinal perforation 13 and optionally of transverse perforations, then two cover sheet sections 14, 15 are formed, which can be folded up, so that the carrying handle 6 is exposed and can be pulled up through the cover sheet 5. 2, the carrying handle 6 is provided in its middle region with a Z-fold 16, which is opened when the carrying handle 6 is pulled out, so that the carrying handle 6 can be pulled out sufficiently high. The Z-fold 16 thus forms a memory fold.

The cover sheet 5 may be provided with two printed fields 17, 18, wherein the imprints may be identical but 180 ° rotated against each other, so that regardless of how the filled and sealed at the bottom 4 cuboid bag 1 in a shelf 19 as shown in FIG 5, the relevant contents are legible.

The attachment of the carrying handle 6 and the cover sheet 5 at the bottom 3 of the bag 1 will be explained below with reference to FIGS. 6 to 8.

A device 20 for preparing the cover sheet 5 of the carrying handle 6 has a first machine frame 21, in which a first unrolling device 22 is supported. In this a first roll 23 is mounted with web material made of tear-resistant paper, thin cardboard or plastic film, wherein the wound on the roll 23 web 24 has a width a, which corresponds to the total length of the carrying handle 6 including its ends 7, 8 (see FIG. 8th). From the roll 23, the web 24 is passed through a folding device 25 in which it is provided with a longitudinal fold for producing the Z-fold 16. It is guided above the folding device 25 via a first support table 26, being withdrawn from the first roller 23 by means of a first draw roller pair 27 as the first preferred device and further via the feed table 26 to the first draw roller Pair 27 immediately downstream first cross cutter 28 is supplied. The first cross cutter 28 cuts from the web 24 the already provided with the Z-fold 16 carrying handles 6 according to their predetermined width b. Adjacent carrying handles 6 are still connected to each other by means of small webs after cutting, so that the composite of the web is still preserved despite the cuts performed. The first cross cutter 28 is in the conveying direction 29, a second Zugwalzen pair 30 as a second preferred device immediately downstream, by means of which the still continuous web 24 is further transported.

Also in the first machine frame 21, a second unrolling device 31 is supported, in which a second roll 32 is mounted with a second web 33 of paper, from which the cover sheets 5 are cut. The width c of the second web 33 corresponds to the length of the cover sheet 5. The second web 33 is passed through the printing unit 34, in which the printed fields 17, 18 are printed. Subsequently, the second web 33 is passed through a perforation device 35, in which the longitudinal perforation 13 is generated. Above the perforation device 35 two adhesive nozzles 36 are arranged, are applied to the second sheet 33 - preferably clocked - adhesive strips 37 of hot or cold adhesive. Immediately behind the adhesive nozzles 36, a pair of rollers 38 is provided, by means of which the second web 33 is deflected. The upper roller 38 'of this pair of rollers 38 is segment-shaped, so that it detects only one carrying handle 6 in one revolution and tears off the web 24 and at the same time presses onto the adhesive strips 37 on the web 33. The carrying handles 6 are thus placed at a distance from each other on the second web 33, which corresponds to the width of the cover sheets 5. At the same time, it also serves as a separating device. It should be added that the basic speed of the web 33 is naturally greater than that of the web 24, since the cover sheets 5 have a greater width in the conveying direction 29 than the carrying handles 6. The tearing off of the carrying handles 6 from the web 24 by means of the segment-shaped roller 38th 'So while simultaneously accelerating the carrying handles. 6

In the conveying direction 29, a third pair of draw rollers 39 connects to the pair of rollers 38 as a third preferred means, by means of which the second web 33 is withdrawn from the roller 32. The already occupied with the handles 6 track 33 is fed to a second cross cutter 40. With the second cross cutter 40, the longitudinal cuts 11, 12 are produced in the second web 33 and then the cover sheets 5 are cut. Also in this case, the separation of the cover sheets 5 from the second web 33 is not yet complete. They are still small with this Webs connected. If, instead of the transverse cuts 11, 12 transverse perforations are to be provided, they can also be produced transversely to the conveying direction 29 with the cross cutter 40.

The cross cutter 40 is followed by a fourth draw roller pair 41 as a fourth preferred device. This leads to the still located on the support table 42, provided with the handles 6 and still connected to the web 33 cover sheets 5 a transfer device 43 to. The transfer device 43 consists essentially of a transfer roller 44 and a pressure roller 45 arranged above it, which like the roller 38 'is segment-shaped. The transfer roller 44 and the pressure roller 45 are driven at a higher speed than the web 33, so that the covers 5 provided with the carrying handles 6 are finally torn off the web 33 and transferred to the transfer roller 44 at a distance from one another. The transfer device 43 therefore simultaneously serves as a separating device for the cover sheets 5 with carrying handles 6.

The transfer roller 44 is formed in a known manner as a vacuum roller, that is, the blanks of the provided with the carrying handles 6 cover sheets 5 are held by acting from the interior of the transfer roller 44 negative pressure on the surface of the transfer roller 44. When transporting the cover sheets 5 in the direction of rotation 46 down the cover sheets 5 along with handle 6 run past a gluing unit 47, in which both the respective cover sheet 5 and the handle 6 are provided with an adhesive layer 48 which does not extend over the area which relates to the removable during use of the cover sheet 5 after tearing open the perforations 11, 12, 13 part of the carrying handle 6.

At the pressure roller 45 diametrically opposite lower side of the transfer roller 44, the latter comes together with a transfer roller 49. This transfer roller 49 is part of a stacking device 50. This per se known stacking device 50 has a second machine frame 51, which is provided with a pair of cooperating feed belts 52, 53, by means of which those of the manufacture coming to be finished bag 1 of the transfer roller 49 are supplied, on which they are gripped by a gripper bar 54 and guided in the direction of rotation 55 by a feed 56 for the cover sheets 5 with handle 6. At the supply 56, the transfer roller 44 and the transfer roller 49 move in the same direction due to their opposite directions of rotation 46, 55. Since the blank of the cover sheet 5 has been rotated on the transfer roller 49 by 180 °, the carrying handle 6 is now at the bottom of the cover sheet 5. At the feed point 56, the cover sheet 5 is pressed onto the bottom 3 of the bag 1, whereby the cover sheet 5 and the ends 7, 8 of the handle 6 are glued to the bottom 3. For the described reasons, the carrying handle 6 is now between the bottom 3 and the cover sheet 5. The located between the ends 7, 8 area of the handle 6 is naturally not glued to the bottom 3 or with the cover sheet 5. Subsequently, the bag 1 provided with the cover sheet 5 and the carrying handle 6 is deposited in a stacking magazine 57 of the stacking device 50.

The printing of the second web 33 can of course also be done before the described method, so that already a printed second roll 32 is used. In this case, a printing unit 34 is not required.

Incidentally, the control of the entire apparatus is carried out with measures generally used and known in continuous paper processing.

Claims (8)

Bag (1) - with a closed bottom (3), with a carrying handle (6) attached to the bottom (3), - which consists of flexible material, - The ends (7, 8) are glued to the bottom (3), - Is provided between the ends (7, 8) with a memory fold (16), - which rests against the floor (3) and - whose between the ends (7, 8) befindlicher area from the bottom (3) can be lifted, characterized, - That at least a portion of the bottom (3) and the entire carrying handle (6) by means of a closed cover sheet (5) are covered, and - That the cover sheet (5) on both sides of the between the ends (7, 8) located portion of the carrying handle (6) with two transverse partitions (11, 12) and with a connecting these longitudinal perforation (13) is provided. Bag according to claim 1, characterized
that the cover sheet (5) comprises at least one printed area (17, 18). Method of manufacturing a bag according to claim 1 or 2, wherein a first web (24) of flexible material is withdrawn from a first roll (23) in a conveying direction (29), - Wherein the first web (24) is provided with an in the conveying direction (29) extending overlap folding, - Wherein subsequently from the first web (24) transversely to the conveying direction (29) carrying handles (6) are separated, wherein a second web (33) of flexible material in the conveying direction (29) is withdrawn from a second roll (32), - Wherein the second web (33) with two transverse to the conveying direction (29) extending transverse partitions (11, 12) and a connecting these, in the conveying direction (29) extending longitudinal perforation (13) is provided, - Carrying handles (6) are each stored at a distance from each other on the second web (33), wherein cover sheets (5) are cut transversely to the conveying direction (29) from the second web (33), - Each cover sheet (5) is coated with a carrying handle (6) lying on each partially with adhesive, and - In each case a cover sheet (5) with a carrying handle thereon (6) with the adhesive-coated side on a bottom (3) of a bag (1) passed and is pressed. Method according to claim 3, characterized
in that the carrying handles (6) are fixed on the second web (33). Method according to claim 3 or 4, characterized
that the second web (33) is printed on the handles (6) opposite side. Device for carrying out the method according to one of claims 3 to 5, with a first unrolling device (22) for a first web (24) of flexible material, - with a folding device (25) for producing a longitudinal fold in the first web (24), - With a preferred means for transporting the first web (24) in the conveying direction (29), with a first cross cutter (28) for cutting carrying handles (6) out of the first path (24), with a second unrolling device (31) for a second web (33) of flexible material for producing cover sheets (5), - With a device for generating two transversely to the conveying direction (29) extending transverse cut-throughs (11, 12), - With a perforation device (35) for generating a in the conveying direction (29) extending longitudinal perforation (13), - With a preferred means for transporting the second web (33) in the conveying direction (29), - With a berth for placing each of a carrying handle (6) on a cover sheet (5), with a second cross cutter (40) for cutting the cover sheets (5) from the second web (33), - With a gluing unit (47) for partially gluing each cover sheet (5) and the carrying handle on it (6) and - With a transfer device for transferring and pressing each of a cover sheet (5) with carrying handle (6) on a bottom (3) of a bag (1). Device according to claim 6, characterized in that
Ass - in relation to the conveying direction (29) - the attachment point a means for applying adhesive on the cover sheets (5) is arranged upstream. Device according to claim 6 or 7, characterized
that a printing unit (34) for printing the cover sheets (5) is provided.

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