EP0475463A2 - Package made from sheet material with tear-off strip - Google Patents

Abstract

2.1 (Sheet) packages (51) of the present type are predominantly employed for holding folded paper handkerchiefs. The packages (51) are provided with a recloseable opening aid. This consists of a tear tab (34) or a folding flap and of an adhesive label (40) or adhesive strip (47). 2.2. To ensure efficient manufacture and a special design of such packages (51), the latter are fed in double rows (package rows 52, 53) and provided in pairs with adhesive labels (40) or adhesive strips (47). It is particularly advantageous to manufacture and supply double labels (55) or double strips (79), which are then severed during the transport of the packages (51) and folded into the end position. 2.3.By appropriate design, namely dimensioning, of the adhesive labels (40) with a connection piece (42) which extends in the region of an end face (27), the stability and ease of handling of the packages are improved. <IMAGE>

Description

The invention relates to a method for producing (film) packaging, in particular for paper handkerchiefs, with an opening aid lying on the outside or an adhesive label having an adhesive label. Furthermore, the invention relates to a device for carrying out the method and a (film) packaging which is produced by the method and is designed in a special way.

Paper handkerchiefs are usually offered in cuboid packaging made from very thin plastic films. Such packaging typically contains ten folded paper handkerchiefs.

For some time now, the film packaging has been equipped with tear-open aids, mostly in a resealable version. In a particularly widespread film packaging of this type, a tear-open tab delimited by perforation lines is arranged in the region of a (large-area) front wall of the packaging. This extends in the direction of an (upper, small-area) end wall. One end area of the tongue-shaped tear-open tab is provided with an adhesive strip which can be removed from the front wall with an adhesive-free handle end while taking the tear-open tab with it. This frees up an (upper) removal opening for the handkerchiefs.

Other embodiments of such film packaging are also known, for example with a reclosable tear-open aid having an adhesive strip in the region of one of the elongated side walls of the packaging.

The invention is concerned with the manufacture and design of such packaging. The object on which the invention is based is to design and produce adhesive strips or adhesive labels for the tear-open aid of such packages in a material-saving manner and to attach them to the packaging in an efficient manner, so that they can be manufactured inexpensively.

To achieve this object, the method according to the invention is characterized in that the adhesive strips or adhesive labels are separated from a material web provided with a one-sided adhesive coating, the width of which corresponds at least to the dimension of two adjacent adhesive strips or adhesive labels, and that in pairs in opposite positions, in two Packaging conveyed on the web can be provided with an adhesive strip or adhesive label at the same time.

In the method according to the invention, two packs conveyed next to one another are provided with the adhesive strip or adhesive label simultaneously at the position provided for this purpose, these being separated from a double-wide material web immediately before being attached to the packaging.

According to a further feature of the invention, the material web is continuously provided on both edges with a cover strip, which forms the non-adhesive end of the handle on the adhesive strip or adhesive label. According to the invention, the two cover strips are also produced from a double-wide material strip by central separation.

According to a particularly advantageous development of the method according to the invention, double-width adhesive strips or adhesive labels (double strips or double labels) are separated from the (double-wide) material web by means of corresponding die cuts and, with the relative position of the packages conveyed in pairs, transferred to them, namely glued to front walls. The double strips or double labels are then cut through in a central plane and - during further transport - folded into the end position on the packaging, namely by folding a strip protrusion or a label protrusion into the plane of the adjacent end wall or side wall.

The device according to the invention for carrying out this method has rollers or bobbins for the material web and the cover strips or material strips and at least one cutting roller adapted to the shape and size of the adhesive strips or adhesive labels or the double strips or double labels. If the packs of the two pack rows are conveyed with the relative position aligned in the same direction, devices are also provided by which the packs of the one pack row are increased by 180 ^o or by 90 ^o (if the tear aid is arranged on a side wall) be rotated so that the packaging of the two rows of packs with the end walls or side walls are facing each other.

A packaging produced by the method according to the invention is designed in the area of the opening aid in such a way that an adhesive label extending approximately over the full width of the front wall is continued with a label protrusion (leg) into the plane of the front wall and with this by gluing in approximately half the area the area corresponding to the end wall is connected. This design and arrangement of the adhesive label increases the stability of the packaging in the area of the tear-open aid. In particular, the end wall is stabilized in a surface part adjacent to the removal opening by the label protrusion extending over the length of the end wall.

Further features of the invention relate to the manufacturing process for the packaging or the tear-open aid, the design of the device and the packaging itself.

Fig. 1

eine Folien-Verpackung für Papier-Taschentücher mit Aufreißhilfe in perspektivischer Darstellung,

Fig. 2

einen Abschnitt einer Folienbahn zur Bildung von Zuschnitten für eine Verpackung gemäß Fig. 1,

Fig. 3

eine andere Ausführung einer Folien-Verpackung für Papier-Taschentücher, ebenfalls in perspektivischer Darstellung,

Fig. 4

eine Materialbahn zur Bildung von (doppelt breiten) Klebeetiketten im Grundriß,

Fig. 5

ein doppelt breites Klebeetikett (Doppeletikett),

Fig. 6

Einzelheiten einer Vorrichtung zum Herstellen und Anbringen von (Doppeletiketten) in perspektivischer, vereinfachter Darstellung,

Fig. 7

die Einzelheiten der Vorrichtung gemäß Fig. 6 in schematischer Seitenansicht,

Fig. 8

Einzelheiten einer Vorrichtung sowie eines gegenüber dem Ausführungsbeispiel der Fig. 6 modifizierten Verfahrens zum Herstellen und Anbringen von Klebeetiketten an Verpackungen, in perspektivischer Darstellung,

Fig. 9

eine Materialbahn für die Herstellung von doppelt breiten Klebestreifen (Doppelstreifen),

Fig. 10

eine Vorrichtung zum Herstellen und Anbringen von doppelt breiten Klebestreifen an Verpackungen in perspektivischer Darstellung.

Exemplary embodiments for the production of the adhesive strips or adhesive labels, for the device and the packaging are explained in more detail below with reference to the drawings. It shows:

Fig. 1

a foil packaging for paper handkerchiefs with tear aid in perspective,

Fig. 2

1 shows a section of a film web for forming blanks for a packaging according to FIG. 1,

Fig. 3

another version of a film packaging for paper handkerchiefs, also in perspective,

Fig. 4

a material web for the formation of (double-wide) adhesive labels in the floor plan,

Fig. 5

a double-wide adhesive label (double label),

Fig. 6

Details of a device for producing and attaching (double labels) in a perspective, simplified representation,

Fig. 7

6 shows the details of the device according to FIG. 6 in a schematic side view,

Fig. 8

Details of a device and a method for producing and attaching adhesive labels to packaging, modified from the exemplary embodiment in FIG. 6, in a perspective representation,

Fig. 9

a material web for the production of double-wide adhesive strips (double strips),

Fig. 10

a device for producing and attaching double-wide adhesive strips to packaging in perspective.

In Fig. 1 a packaging is shown, which can consist of very thin film (z. B. 30). The packaging is particularly suitable for holding a stack of folded paper handkerchiefs.

The packaging is produced from a rectangular blank 20, which is shown in FIG. 2 as a section of a continuous film web 21. The blank 20 is intended for the formation of a front wall 22, a rear wall 23, a side wall 24 arranged between them and overlapping side wall tabs 25, 26 which are connected to one another by seals. On the free sides of the above-mentioned packing walls, folding flaps connect to Formation of an upper end wall 27 and a corresponding bottom wall 28. The folding tabs in question are outer and inner longitudinal tabs 29, 30 and side tabs 31, 32. In the embodiment of FIG. 1, the end wall 27 - and correspondingly the bottom wall 28 - is designed such that first the side tabs 31, 32 are turned inwards against the contents of the package and then folding the longitudinal flaps 30 and 29, the latter having a trapezoidal shape.

The packaging is provided with a tear-open aid in the area of the front wall 22. A tear-open tab 34 is delimited by a perforation line 33, which is curved in the present case and is formed in a region of the front wall 22 facing the end wall 27. The perforation line 33 extends to an edge formed between the front wall 22 and the front wall 27, namely a front edge 35. This is also the pivot axis for the tear-open tab 34 during the opening and closing movements of the same. The perforation lines 33 end at a distance from the front, upright side edges 36, 37 and at the same time from the front corners 38, 39 formed between the front wall 22 and the front wall 27.

The tear-open tab 34 is actuated by an externally attached adhesive label 40, which preferably consists of a somewhat thicker film with a permanent adhesive coating applied on one side.

The adhesive label 40 is formed, dimensioned and arranged in a special way in the embodiment of FIGS. 1 and 2. As can be seen, the adhesive label 40 has larger dimensions in the longitudinal and transverse directions than the tear-open tab 34. The adhesive label 40, which is likewise curved in the lower region here, extends in the region of the front wall 22 with a rectilinear boundary edge 41 (approximately) adjoining the curved contour the side edges 36, 37 of the front wall 22. This is accordingly in a region facing the end wall 27 almost the full width covered by the adhesive label 40.

A connector 42 of the adhesive label 40 extends in the same width, that is to say in a rectangular configuration, in the plane of the end wall 27 and is connected to it by gluing. The connecting piece 42 is dimensioned such that it covers approximately half the surface of the end wall 27 on the outside and extends in the region of the outer longitudinal tab 29 and the side tabs 31 and 32. The area of the tear tab and in particular the loaded area of the end wall 27 are stabilized by the adhesive label 40 and in particular by its connector 42. This remains in the bonding position with the end wall 27 even during the opening and closing movements.

The adhesive label is provided with an adhesive-free handle end 43 at a lower area outside the tear-open tab 34. This is formed in that a non-adhesive strip material is glued to the side of the adhesive label 40 provided with adhesive.

In the embodiment of a (film) packaging shown in FIG. 3, the tear-open aid is attached in the region of a side wall 44 of the packaging, which is created by gluing the two longitudinal tabs 29, 30. The outer longitudinal tab 29 is at the same time an opening tab as part of the longitudinal tab 29 with lateral delimitation by separating cuts 46.

An elongated, rectangular adhesive strip 47 made of a film with a one-sided adhesive coating extends here with one leg in the region of the side wall 44 connected to the opening tab 45 and with another leg in the region of the front wall 22. At the free end of the adhesive strip 47 in the region of the front wall 22, an adhesive-free handle end 50 is formed in an analogous manner to the exemplary embodiment in FIGS. 1 and 2.

4 to 7 show details of a method and a device which are particularly suitable for the production of packages according to FIGS. 1 and 2 - but also of other packages with a tear-open aid. As can be seen, cuboid (film) packs 51 are fed in two parallel pack rows 52, 53 coming from a packaging machine, a store or the like. In the exemplary embodiment selected here, the packs 21 of the two pack rows 52, 53 are rectified after the manufacturing process. For the simultaneous application of adhesive labels 40 to two pairs of adjacent packs 51 of the pack rows 52 and 53, the packs 51 of a pack row - in the exemplary embodiment of the pack row 53 - must be rotated by 180 ^° , so that the packs 51 of the two pack rows 52, 53 are facing each other with their end walls 27. The front walls 22 are directed upwards.

In such a relative position, the pack rows 52, 53 are conveyed (continuously) to a label station 54. In this case, double-width adhesive labels, that is to say double labels 55, are placed simultaneously on two mutually adjacent packs 51 of the pack rows 52, 53. For this purpose, the rows of packs 52, 53 are arranged at such a distance from one another that the double label 55 is positioned correctly on both packages 51, namely with the part assigned to the front wall 22 in each case. In an intermediate position, the double label 55 accordingly lies on the front walls 22 of the packaging 51, which is adjacent in pairs, and connects them to one another. The part of the individual adhesive labels 40 that is to be used to form the connecting piece 42 is exposed as a connecting bridge between the two packages 51.

In the course of further transport of the pairs of packages 51, the double labels 51 are separated by a cut 56 (Fig. 5) in the middle plane between the two packages 51 cut to form two separate adhesive labels 40.

The regions of the adhesive labels 40 which protrude from the front edge 35 beyond the front wall 22, namely the connecting pieces 42 thereof, are then folded over into the (vertical) plane of the end wall 27 and glued to the latter. Thus, two packages 51 in the embodiment according to FIG. 1 are produced at the same time.

The double labels 55 are separated in the area of the label station 54 from a correspondingly dimensioned, that is to say at least double-wide, material web 57 made of film material. The material web 57 provided with an adhesive on one side is wound into a bobbin 58. The material web 57 is continuously drawn off from this and conveyed to the periphery of a transfer roller 61 via deflection rollers 59, 60. This is arranged with its lateral surface immediately above the packages 51 or pack rows 52, 53, such that adhesive labels 40 or adhesive strips 47 or double labels 55 formed on the jacket of the transfer roller 61 are transferred to the upward-facing side of the packages 51, and during the transport movement of the same.

Individual adhesive labels 40, adhesive strips 47 or double labels 55 are produced in the area of the transfer roller 61 by punching from the material web 57. For this purpose, a cutting roller 62 is assigned to the transfer roller 61. This is provided on the circumference with protruding knives 63 which are arranged in a contour corresponding to the adhesive labels, adhesive strips or double labels to be produced. The cutting roller 62 can be used to produce individual adhesive labels 40 or adhesive strips 47 - in pairs - or double labels 55, namely by the cutting roller 62 or the knives 63 resting on the outer surface of the transfer roller 61 or on the on this running material web 57.

6, 7 and 8, double labels 55 are punched out of the material web 57. The width of the material web 57 is chosen so that lateral waste strips 64 remain as a residue on the transfer roller 61. In the device shown, these waste strips 64 are collected by winding them onto a waste bobbin 65 and are thus removed without impairing the production process.

The double labels 55 are placed one after the other and continuously on the packs of the pack rows 52, 53 fed in pairs. These are facing each other with their end walls 27 and are arranged at such a distance from one another that the above-described attachment of the double label 55 on the top of the two packages 51 is ensured.

Following the attachment of the double label 55 to the two packages 51, the separating cut 56 takes place in the middle of the double label 55 between the two packages 51, specifically by means of a fixed, circumferential, disk-shaped separating knife 66.

The packages 51 are then conveyed continuously, in the exemplary embodiment shown while maintaining the relative position. The connecting pieces 42 of the adhesive labels 40 formed after the separating cut projecting over the front wall 22 of the packages 51 are folded together down into the plane of the end wall 27. For this purpose, a stationary folding member is provided in the movement path of the rows of packs 52, 53 between them. In the exemplary embodiment shown, this is designed as a rotating folding disk 67. The shape of the folding disk 67 is adapted to the folding process, namely double conical. Oblique folding surfaces 68 arranged on both sides capture the protrusion, namely the connecting piece 42 and move it downwards until a flat flat part 69 of the folding disk 67 presses the overturned connecting piece 42 against the end wall 27 due to the relative position. The packaging 51 is now also completed with respect to the tear aid.

The handle end 43 attached to the adhesive labels 40 is manufactured from a material strip 70 made of paper, foil or the like and is applied to the adhesive side of the adhesive label 40. The material strip 70 is continuously drawn off from a material roll 71. In the present exemplary embodiment, the material strip 70 is of double width and is severed in the middle during transport, specifically by a cutting knife 72. The two partial strips 73, 74 thus created are conveyed at a distance from one another, namely by contacting the circumference of a deflection roller 75. The distance formed is aligned with the desired relative position of the partial strips 73, 74 on the material web 57. The partial strips 73, 74 are pressed continuously against the edge of the material web 57, specifically on the side provided with adhesive. The partial strips 73, 74 are thus firmly connected to the edge regions of the material web 57. The relative position of the partial strips 73, 74 is such that when punching or cutting the adhesive labels 40 or double labels 55, the handle ends 50 are formed at the intended end or edge of the adhesive labels 44. Waste material arising in the region of the partial strips 73, 74 during the punching process is removed with the waste strip 64.

A modification of the method described above and of the device can be seen in FIG. 8. Here, the described double labels 55 are not cut or punched from the material web 57, but rather this device is set up for the production of individual adhesive labels 40 and for attaching them in pairs to two packages 51 each. For this purpose, the material web provided with the partial strips 73, 74 57 in front of the cutting or punching point, that is to say before reaching the transfer roller 61 and the cutting roller 62, divided in the longitudinal center during continuous transport, namely by a disk-shaped cutting knife 76. The partial webs 77, 78 thus formed become circumferential at a distance from one another the transfer roller 61 brought up. In this exemplary embodiment, the knives 63 of the cutting roller 62 abutting the transfer roller 61 are set up in such a way that individual adhesive labels 40 arranged at a distance from one another are formed in the region of each partial web 77, 78 on the circumference of the transfer roller.

These are then transferred to the top of the packages 51 in the manner described, such that a protrusion of the adhesive labels, namely the connector 42, projects beyond the packages. These connecting pieces 42 are folded over against the end wall 27 in the course of the further transport of the packages 51, either by a folding element (folding plate 67) corresponding to the exemplary embodiment in FIG. 6 or by fixed curved folding elements.

The described method and the devices are also suitable in an analogous manner for the production and application of adhesive strips 47 which are common in many packages (FIGS. 9 and 10). The method and device for producing and attaching such adhesive strips 47 are designed in an analogous manner to the exemplary embodiments already described. The same parts of the device are therefore provided with the reference numbers of the preceding exemplary embodiments in FIG. 10.

According to the exemplary embodiments described, the adhesive strips 47 can be produced in double width by separating them from the material web 57 to form double-length adhesive strips - double strips 79 - or in pairs as individual adhesive strips 47. When producing double strips 79, as shown in FIG. 9, will this is placed on packaging supplied in pairs and then severed in the middle, in the present case by the separating knife 66. A protruding leg 48 of the adhesive strips 47 is thereby formed, which is also folded down in the manner already described here by a folding element 67 designed as a folding disk 67 . The embodiment of FIG. 10 shows the production of packaging according to FIG. 3, in which the tear strip is gripped with the leg 49 in the region of the front wall 42 and with the leg 48 in the region of the elongated side wall 44.

For this purpose, the packages 51 are conveyed with their longitudinal axes pointing in the conveying direction in two parallel rows of packs 52, 53. Because of the different relative position during conveying in the packages 51 they are rotated in the two pack rows 52 53 90 ^o, so that the side walls facing each other. As in the exemplary embodiments described, the rotation of the packaging 51 is brought about by rotary pistons 80 which can be acted upon by suction air and are arranged above the rows of packs 52, 53 and are rotatably driven.

Due to the small width of the adhesive strips 47 or double strips 79, a cutting roller 81 is formed differently from the cutting roller 62 of the exemplary embodiments described, namely with a plurality of axially parallel cutting blades 82 arranged along the circumference at equal intervals 61 each a double strip 79 (or two individual adhesive strips 47) separated from the material web 57.

Claims (7)

Packaging made of (thin) film, in particular for holding folded paper handkerchiefs, with an opening aid which consists of a tear-open tab (34) delimited by perforation lines (33) in the region of a front wall (22) and an adhesive label (40) partially covering it , characterized in that the adhesive label (40) extends at least in the area of the front wall (22) adjacent to an end wall (27) approximately over the width of the latter. Packaging according to claim 1, characterized in that the adhesive label (40) completely covers the tear-open tab (34) or the perforation lines (33) in the region of the front wall (22). Packaging according to claim 1 or 2, characterized in that the adhesive label (40) extends with a connecting piece (42) into the plane of an adjacent end wall (27). Packaging according to claim 3, characterized in that the connecting piece (42) has approximately the width of the adhesive label (40). Packaging according to claim 3 or 4, characterized in that the connecting piece (42) extends over the full width of the end wall (from side wall 24 to side wall 44). Packaging according to one of claims 3 to 5, characterized in that the connecting piece (42) in the region of the end wall (27) at least partially covers a longitudinal tab (29) adjoining the front wall (22). Packaging according to one of claims 3 to 6, characterized in that the connecting piece (42) of the adhesive label (40) covers approximately half the area of the end wall (27) and by adhesive bonding with an outer longitudinal tab (29) and with side tabs (31, 32 ) the end wall (27) is connected.

Images