EP4182234A1

EP4182234A1 - Method for producing a packaging

Info

Publication number: EP4182234A1
Application number: EP21731678.5A
Authority: EP
Inventors: Frank Oldorff; Sebastian Dicke
Original assignee: Swiss Krono Tec AG
Current assignee: Swiss Krono Tec AG
Priority date: 2020-07-20
Filing date: 2021-06-14
Publication date: 2023-05-24
Also published as: US20230278825A1; EP3943402A1; EP3943402B1; CN116171251A; EP3943402C0; ES2964465T3; CA3186301A1; PL3943402T3; WO2022017683A1

Abstract

The invention relates to a method for producing a wrapping for a paper roll, the paper roll having a wound paper web (2) and two opposing end sides and a circumferential surface connecting the end sides to each other, the method involving the following steps: applying a protective material (10) in liquid form to an end section of the paper web (2) by means of at least one application mechanism, the protective material (10) being applied to one or two sides of the end section of the paper web (2); winding the end section of the paper web so that the end section forms at least one outer layer of the paper roll; and curing the protective material (10) so that a protective layer covering the circumferential surface is produced.

Description

Process for manufacturing a package

The invention relates to a method for producing a peripheral packaging for a roll of paper. It also relates to a method for producing end-face packaging for a roll of paper and a method for producing packaging for a roll of paper. The paper roll has in each case a wound paper web and two opposite end faces and a peripheral surface which connects the end faces to one another.

Paper rolls of this type have long been known from the prior art and are used, for example, in the paper and printing industry. They can be unprinted, for example as raw paper rolls, or printed as paper rolls.

Typically, they are used to transport long webs of paper, which can be several kilometers long, from one place of manufacture to another where they are further processed. To ensure that the paper rolls are not damaged during transport, they must be packed and protected. For this purpose, the paper rolls are usually removed from their production plant so that their end faces are accessible without an axis. Handling the rolls is complicated and requires large machines, since each individual roll can weigh up to 1.5 t.

The packaging is packed in a separate packaging machine that can be operated automatically or semi-automatically. In individual cases, paper rolls are also packed manually. The packaging usually consists of an order catch packaging through which the peripheral surface of the paper roll is to be protected. The packaging usually also has two end packaging.

The perimeter packaging is conventionally made of two layers of brown paper with a basis weight of, for example, 100 g / square meter, where a waterproof layer, for example a po lyurethanschicht, can be arranged between the two paper layers. This is applied, for example, with a surface weight of 20 g/square meter. As an alternative to this, a peripheral packaging can also be in the form of a film that is placed around the paper roll in order to protect it from external influences, in particular moisture. Of course, the film can also be reinforced with a reinforcement layer, for example made of cardboard, in order to achieve mechanical stability and to protect the paper layer, for example, from knocks and bumps. A front end packaging is conventionally used in the form of a coated cardboard cover, the diameter of which corresponds at least approximately, but preferably completely, to the diameter of the paper roll. Such end caps protect the end faces of the paper roll against external influences. A front cover either has a foldable edge protection itself, for example by the diameter of the front cover being larger than the diameter of the paper roll to be packaged. In this case, the front cover protrudes and can be folded over. The unexplained part then forms the edge protection. Alternatively, a separate edge protection is used, which is glued to the transition from the front cover to the peripheral packaging.

Processes for packaging rolls of paper are expensive. A separate packaging machine is usually required or the paper roll must be packed manually on the roll changer or its shaft of the Fierstellungsmaschine on which the paper web is processed and then rolled up, in particular a printing press. This requires additional staff. In addition, due to the separate packaging material, one is dependent on deliveries, requires storage space and additional financial expenditure.

The invention is therefore based on the object of improving methods for packaging a paper roll in such a way that they can be carried out quickly, easily and inexpensively and still ensure good and safe packaging of the paper roll.

The invention solves the problem set by a method for producing a peripheral packaging for a paper roll, the paper roll being a wound up paper web and two opposite end faces and a peripheral surface which connects the end faces to one another, the method comprising the following steps:

applying a protective material in liquid form to an end section of the paper web,

Winding up the end section of the paper web so that the end section forms at least one outer layer of the paper roll and curing the support material so that a protective layer covering the peripheral surface is formed.

The method according to the invention can be carried out, for example, in the production facility, in particular within a printing line, in which the paper roll is produced, ie the paper web is processed and rolled up. For this purpose, only one additional application unit is preferably used, through which the protective material can be applied in liquid form to the paper web, in particular to the end section of the paper web. This can, for example, be an anilox roller with a scoop trough from which the protective material is scooped with the anilox roller. In order to avoid an excessive application of material, a squeegee can be provided, which wipes off excess protective material from the anilox roller. In this embodiment of the method, the protective material is preferably applied from the anilox roller to an applicator roller, for example a rubber roller, which then brings the protective material to the end region of the paper web. As an alternative to this, the commissioned work is, for example, a print head, for example a digital printing system, a laminating unit or a laminating system.

The protective material is applied in liquid form and, in the cured form, preferably has protective, in particular water-repellent, properties. Waxes, resins or plastic, for example polyurethane (PU) or polyethylene (PE), are suitable as protective material. The protective material can be pigmented or colored to suit individual needs and preferences. The protective material can also be designed in different colors, so that protective material of different colors, for example, can be attached to different ones Places of the end portion can be applied. This opens up further optical design options. This is particularly advantageous for the protective material that is applied to that part of the end section that is visible from the outside after the protective material has hardened. Inscriptions or barcodes or QR codes can also be applied in this area by using differently colored protective material. This is particularly easy if the at least one commissioned work is a digital print work. The amount of protective material applied is advantageously at least 3 g/square meter, preferably at least 5 g/square meter, particularly preferably at least 8 g/square meter and at most 50 g/square meter, preferably at most 30 g/square meter, particularly preferably at most 15 g /Square meters.

The protective material can be applied to one side of the end portion of the paper web or to both sides of the end portion of the paper web, i.e. a top side and a bottom side of the paper web. At least one sensor and an electronic control can be used to monitor that the desired application quantity of the protective material has been applied and the desired distribution of the protective material can also be monitored in this way.

Since the protective material is applied directly to the paper web in an application unit, it is not necessary to reduce the production speed of the production facility, for example the printing line. This saves time. Another printing unit can be located downstream of the order unit, in order to be able to print out information, for example about the content of the paper roll, a place of delivery or other information, on the protective material that is then preferably already hardened. The at least one commissioned work can be a digital commissioned work or an analog commissioned work.

The application of the protective material is preferably monitored by means of at least one sensor, preferably by means of a plurality of sensors. The result is preferably used to identify and correct any deviations from a predetermined target order quantity. In addition, the result of the monitoring preferably stored, particularly preferably stored electronically. In the event of later problems or complaints, it can be traced whether sufficient protective material was used.

Advantageously, the end section is long enough to form several outer layers of the paper roll, preferably at least three outer layers, particularly preferably at least five outer layers, more particularly preferably at least seven outer layers of the paper roll when it is wound up. The more outer layers of the paper roll the end section forms, the better the protection of the paper underneath. The length of the end section is preferably at least 3 m, preferably at least 5 m, particularly preferably at least 8 m, and at most 100 m, preferably at most 40 m, particularly preferably at most 20 m. When winding the paper web onto the shaft or a winding core , which is also understood as a shaft, each revolution of the shaft results in a layer of paper being wound on the shaft. For example, after 100 revolutions of the shaft, the paper of the paper web is in 100 layers on the shaft. There are then 100 layers or strata on top of each other.

Advantageously, a marking is applied to the paper web, which forms the beginning of the end section. This marking can preferably be edited electronically after it has been captured automatically, for example optically by a camera. An electrical or electronic control of the system recognizes the marking and generates control signals, with which the application unit for the protective material is controlled, so that the protective material can be applied to the end section of the paper web that is identified by the marking.

The protective material is preferably cured before the end section is wound up. For this purpose, the paper of the paper web coated with the protective material is preferably guided through a drying device or a curing device. Depending on the protective material, the coated paper can be exposed to infrared light, UV radiation, heat or other radiation to accelerate curing. In the context of the present invention is also a Crosslinking or polymerizing the protective material is understood as curing. If the protective material is cured before it is wound up, the cured protective material can be printed on in a particularly simple manner.

As an alternative to this, the end section is wound up before the protective material has completely hardened, so that the protective material preferably connects a plurality of outer layers of the paper roll formed by the end section to one another during hardening. This does not result in several separate layers provided with hardened protective material, but rather the protective material from different layers combines during hardening, crosslinking or polymerisation and forms a single, thicker and therefore more secure protective layer.

The invention also solves the problem set by a method for producing end-side packaging for a paper roll, the paper roll having a paper web wound up on a shaft and two opposite end faces and a peripheral surface which connects the end faces to one another, the method having the following steps:

providing a front cover which has a base body with an opening and a tab for covering the opening,

arranging the end cap on the shaft in such a way that the end cap rests against an end face of the paper roll and the shaft runs through the opening,

Remove the paper roll from the shaft and cover the opening with the tab.

When producing a paper roll, a paper web, which can be several kilometers long, is wound onto a shaft. This shaft is at least on one end of the paper roll, but preferably ge superimposed on both ends of the paper roll. This allows the large forces that arise on the one hand by the large mass of the paper roll and on the other hand by the high rotational speeds of the Pa pierrolle during winding, are intercepted. In this state it is However, it is not possible to pack the entire end face of the paper roll because the shaft protrudes from the end face.

The production is significantly simplified by the method according to the invention for producing a front-side packaging. A front cover is used, which was produced on a paper basis, for example, and preferably contains cardboard, which is coated with a coating, in particular a waterproof coating. Such a coating can, for example, be made of a po lyurethane (PU) or a polyethylene (PE). A tab is understood to be a flat element that covers the opening in the front cover.

The front cover is preferably at least almost, but preferably exactly, circular in shape and, in a first embodiment, has an opening that is punched out, for example. Before the paper web is rolled up, such a front cover is attached to the shaft by passing the shaft on which the paper web is to be wound up through the opening. Preferably, who put the two such end caps on the shaft, between the two end caps then the paper web is wound up and the paper roll is formed.

Alternatively, the front cover has an indentation in which its shape deviates from that of a circle. The indentation advantageously extends radially inwards from the edge of the front cover. The indentation particularly preferably extends beyond the center point of the circular lid.

In a further embodiment, the opening is a hole through which the shaft can be inserted and which is connected to the edge of the end cap by a cut. This cut preferably replaces the indentation.

Such a front cover is now pushed onto the shaft on which the paper roll is mounted until the shaft runs through the indentation. For this purpose, part of the front cover must be folded, folded or expanded, for example if the opening is a hole and the indentation is just a cut extends from the outer edge of the end cap to the hole. Especially before given to the shaft then runs through the center of the front cover. In this to stand a large part of the front side of the paper roll is already covered and protected by the front cover. Only part of the end face is still accessible from the outside through the indentation of the end cover and is correspondingly unprotected. After removing the paper roll from the shaft, the shaft no longer protrudes from the face of the paper roll and the remaining part of the face of the paper roll can be covered and protected. For this purpose, the indentation of the front cover is covered by the tab of the front cover.

In a further embodiment, the cover comprises two cover halves which are arranged so as to form a hole between them through which, when arranged, the shaft extends. The cover halves are preferably of identical design, so that two cover halves can be put together to form a base body. Of course, differently designed cover halves can also be used, which together form a base body.

The tab of the front cover can be designed as a separate element and preferably consist of the same material or the same combination of materials as the rest of the front cover. It is preferably slightly larger than the opening in the base body of the front cover, which it is intended to cover, so that the edge of the tab can be connected, for example glued, to the edge of the indentation.

Alternatively, the tab and the body are integrally formed with each other. The lug is preferably connected to the base body over at least part of its circumference along a dividing line, which preferably has a perforation, with the lug preferably having to be separated from the base body along this dividing line before the front cover is pushed onto the shaft. In an advantageous embodiment, the dividing line forms the boundary between the base body and the tab and thus the opening of the base body. The front cover can be provided in a one-piece state, with the tab and the base body preferably not being separated along the parting line. In this state, the front cover has a preferably circular shape. If the front cover is now to be arranged on the shaft, the la is separated from the main body along the dividing line, which is particularly easy due to the perforation that is preferably present. This creates the Publ voltage, preferably the indentation, into which the shaft can be inserted. It has been found to be particularly advantageous if the tab continues to be connected to the main body of the front cover along the parting line even after it has been separated. In this case, the dividing line consequently does not extend around the entire circumference of the tab, but only over part of this circumference. The tab can then be separated from the base body of the front cover along the dividing line and folded over, for example, with the fold line corresponding to the connecting line between the base body and the tab.

After the paper roll has been removed from the shaft, only the folded part, ie the flap, has to be folded back again in this embodiment. Then it is reconnected to the main body of the front cover along the dividing line so that the opening is completely covered by the flap.

Advantageously, the tab has a first portion for covering a first portion of the indentation and a second portion for covering a second portion of the indentation, the first portion of the indentation being covered by the first portion of the tab before the paper roll is removed from the shaft . The two parts of the tab preferably border each other in the radial direction. Since the first part is arranged radially on the outside and the second part is arranged radially on the inside. The two parts can preferably be separated from one another by a second separating line, which can also have a perforation. In this embodiment, before the end cover is slid onto the shaft, preferably only the tab is separated from the base body along the first parting line. After the front cover has been slid onto the shaft, the second dividing line between the two parts of the strap is separated and the first part of the strap, which is located radially on the outside, can be folded over. The first part of the tab is then preferably along the part of the first dividing line, which runs along this part of the tab, is reconnected to the main body of the front cover, so that the first part of the indentation is covered and the part of the paper roll covered thereby is protected. In this state, the front cover therefore has the recess through which the shaft extends. After removing the paper roll from the shaft, the second part of the tab is also folded over to cover the second part of the indentation.

The width of the indentation, ie its extent in the circumferential direction, preferably corresponds at least to the diameter of the shaft.

Preferably, the body and the tab are made of a material coated with a protective material paper or cardboard.

The invention also solves the problem set by a method for producing packaging for a paper roll, the paper roll having a wound paper web and two opposite end faces and a peripheral surface which connects the end faces to one another, the method having the following steps:

Manufacture of a perimeter package according to a method described here,

producing at least one end-of-line packaging according to a method described here and

Connecting the at least one end packaging to the peripheral packaging.

Two end packages are preferably produced for one of the two end sides of the paper roll. These two end-of-line packaging are each connected to the peripheral packaging so that the paper roll is completely wrapped and protected against external influences. Preferably, the protective material used for the perimeter wrap and the protective material used for the end wrap are identical.

In an advantageous embodiment, a diameter of at least one end cap, preferably all end caps, is greater than the diameter of the paper roll. In this case, a part of the end cover is folded over onto the peripheral packaging in order to connect the end packaging to the peripheral packaging. This makes a separate edge protection element unnecessary and further reduces the amount of equipment required. Of course, however, an additional edge protection element can be used, for example to provide greater protection for the sensitive edges of the paper roll, in particular against external mechanical influences.

Edge protection is therefore preferably applied along the edges of the paper roll along which the peripheral surface adjoins the end faces after the peripheral packaging has been connected to the at least one end packaging or to connect the peripheral packaging to the end packaging. The second alternative is particularly advantageous when the diameter of the end-of-end packaging is not larger or not sufficiently larger than the diameter of the paper roll.

The invention also achieves the stated object with a device for carrying out a method described here for producing a peripheral packaging, a device for carrying out a method described here for producing an end-face packaging and/or a device for carrying out a method described here for producing a packaging for a paper roll.

The working width of a digital printing system is preferably at least 1300 mm, preferably at least 1900 mm, particularly preferably at least 2000 mm and at most 2300 mm, preferably at most 2200 mm and particularly preferably at most 2100 mm. The speed of the system at which the to be printed surface is moved through the system is preferably at least 80 m/min, preferably at least 120 m/min and particularly preferably at least 130 m/min and at most 270 m/min, preferably at most 150 m/min and particularly preferably at most 140 m/min when printing paper . Is a primer applied to the to bedru ADORABLE surface, the applied amount is preference, at least 1 g / m ^2, preferably at least 2g / m ² and more preferably we nigstens 3 g / m ² and not more than 10g / m ^2, preferably not more than 6g / m ² , particularly preferably at most 4 g/m ² .

In a first concrete embodiment, a wood decor was produced on a paper digital printing system with a working width of 2070 mm and a speed of 135 m/min on a white decor paper with 65 g/m² CRYK water-based ink with an inline primer application of approx. 3 g/m² . The printing system had an additional application unit with a ceramic anilox roller, a scoop trough and a squeegee with a scoop volume of approx. 8 g/square meter. In the direction of production, this application unit was arranged behind a drying device in which the applied digital print was dried by means of irradiation with NIR radiation (NIR: near infrared). The application medium, which was applied in the application unit, contained PE components and brown color pigments. The production order was created for 10,000 running meters. At the point on the paper web that corresponds to the ten thousandth running meter, a flag was automatically placed by a labeling machine. This flag was automatically recognized so that the additional application unit for the coating with the PE protective material was switched on without the entire system having to be stopped.

In this example, the printed end section was 20 m long and was approx.

8 g / square meter PE coating, which was then dried in a drying device before winding. In this drying unit, too, the relevant protective material was irradiated with NIR radiation and dried in this way. In addition, a small digital printing unit was used, which was arranged behind the application unit in the production direction and printed multiple packaging-relevant information, such as a barcode, on the protective material imprinted. After winding, a waterproof perimeter wrap several layers thick was formed. A 7-layer packaging layer was created on a roll with a diameter of around 90 cm and a circumference of around 280 cm. A conventional peripheral packaging according to the prior art has a basis weight of approximately 220 g/square meter. The packaging produced here has a basis weight of approximately 511 gsm, which is composed of 7 plies of 8 gsm coated paper weighing 65 gsm. Due to the brown color pigments contained in the protective material, the outer color of the manufactured packaging resembles that of conventional cardboard. The information relevant to the packaging, preferably printed in black, was easy to read. The roll diameter was measured with a laser at 90 cm. A front cover with a diameter of 85 cm and a hinged flap was selected. The tab was opened and the front cover pushed onto the shaft. The first at the flap in the area of the outer diameter of the roll, i.e. radially on the outside, was closed again, an edge protection tape was applied and glued all the way around with waterproof adhesive tape. The roll was removed from the roll change. Then the still open second parts of the respective flaps in the area of the axles were closed and also glued with waterproof adhesive tape.

The roll was then delivered to an impregnation channel for further processing. The end portion coated with the protective material, which forms the peripheral packaging, was used for clamping in the impregnation channel. This saved 20 m of printed decorative paper.

In a second specific embodiment, water-based ink was applied to a gravure printing system with a working width of 2070 mm and a speed of 300 m per minute on a 70 g/square meter decorative paper in beige with three color application rollers and a wooden ceiling was produced in this way. After the third color applied had dried, an application unit was placed in the printing system. This has a ceramic anilox roller, a scoop trough and a squeegee with a scoop volume of approx. 15 g/square meter. The protective material applied contained PE components. The production order was at 17,000 m created. At running meters of 17,000, a flag was automatically set by a labeling machine, which was automatically recognized. As a result, the application unit for applying the protective material was switched on automatically without the entire system having to be stopped. The coated end section was 50 m long and was coated with approx. 15 g/m² of the protective material containing PE components. The protective material was then dried before winding without a separate drying device, but the protective material was not completely dried. During winding, the layers cross-linked or stuck to one another so that a watertight wrap-around packaging was formed. A 13-ply packaging layer was created on a roll diameter of approx. 116 cm and a circumference of approx. 365 cm. It has a basis weight of approx. 1105 g/square meter, which is made up of 13 layers of paper with 70 g/square meter and a surface coating of approx. 15 g/square meter.

A front cover with a diameter of 115 cm and an open flap was selected. The flap was opened under the front cover and pushed over the shaft of the roll winder. The first part of the flap, which is arranged radially on the outside, was closed again, edge protection tape was applied and glued with waterproof adhesive tape. The roll was then removed from the shaft. Then the still open second parts of the tabs were closed in the area of the shaft and glued with waterproof adhesive tape. This roll was also delivered to an impregnation channel for further processing, with the coated end area of the paper web being used for clamping. This saved 40 m of printed decorative paper.

In a third specific embodiment, a wood decor was produced on a paper digital printing system with a working width of 2070 mm and a speed of 135 m/min on a white decor paper with 65 g/square meter CRYK water-based ink with an inline primer application of approx. 4 g/square meter adorns A digital application unit was used in the printing system for the bulk application of the protective material, which is located behind a drying unit in the direction of production. direction for the applied ink. The print heads of the order processor had a resolution of 30 dpi. They extended over the entire working width. The application side, on which the protective material is applied, corresponded to the printed side. The protective material contained resin components and yellow color pigments. The production order was created for 4000 running meters. At running meter 4000, a flag was automatically set by a labeling machine, which was automatically recognized and the application unit for applying the protective material switched on automatically without the entire system having to be stopped. The coated end section was about 30m long and was coated with about 10g/sqm of the protective material. Before winding, the protective material was dried with an air dryer. A small digital printing device located behind the application unit in the direction of production printed packaging-relevant information and barcodes on the protective material within the last few meters of the end section.

Upon coiling, a waterproof perimeter wrap several layers thick formed. With a roll diameter of about 58 cm and a circumference of about 182 cm, a 16-layer package was formed. It has a basis weight of approx. 1200 g/square meter, which is composed of 16 layers of paper with 65 g/square meter, which has been coated with approx. 10 g/square meter. The roll diameter was manually measured at 58 cm. A front cover with a diameter of 50 cm and a hinged flap was chosen. The tab was opened and the front cover pushed onto the shaft. The first part of the flap radially on the outside was closed again, edge protection tape was applied and glued all the way around with waterproof adhesive tape. The roll has been removed from the shaft. Then the second part of the flap was closed and also glued with waterproof adhesive tape. This roll was also delivered to an impregnation channel for further processing, with the coated end area of the paper web being used for clamping. This saved 30 m of printed decorative paper.

Some exemplary embodiments of the present invention are explained in more detail below with the aid of the enclosed figures. It shows Figure 1 shows the schematic representation of a device for creating a peripheral packaging, Figure 2 shows the schematic sectional view through a paper roll according to an embodiment of the present invention, Figure 3 shows the schematic sectional view through a paper roll according to a further embodiment of the present inventions,

Figures 4 to 9 schematic representations of different process steps when opening a front-end pack,

FIG. 10 shows the schematic representation of a front cover, FIG. 11 shows the schematic representation of a further front cover and FIG. 12 shows the schematic representation of the edge of a front cover.

FIG. 1 shows diagrammatically part of a device for fastening an outer packaging according to a first exemplary embodiment of the present invention. A paper web 2 runs through a drying device 4 in which, for example, an application of paint that is applied to the paper web 2 is dried. At closing, the paper web 2 passes through an application device 6, which has a scoop trough 8, in which a protective material 10 is located. An anilox roller 12 draws protective material 10 from the scoop trough 8. A squeegee 14 strips excess protective material 10 from the anilox roller 12. From the anilox roller 12, the protective material 10 is transferred to an applicator roller 16, from which it web 2 is applied to the paper. In the embodiment shown, the paper web 2 with the protective material 10 passes through a second drying device 18 in which the protective material 10 is dried before the paper web 2 processed in this way is wound onto a shaft 20 of a roll winder. The application of the protective material 10 is monitored via sensors 22, which are connected to an electronic controller 24.

FIG. 2 shows schematically how the material of the paper web 2 coated with the protective material 10 is wound onto the shaft 20. Radial inside is a white area showing that a large part of the paper web 2 is already wound up, which has not been coated with the protective material 10. In the exemplary embodiment shown in FIG. 2, the protective material 10 is completely cured before the end area of the paper web 2, which has been coated with the protective material 10, is wound up. Therefore, as shown in Figure 2, seven separate layers of the paper coated with the protective material 10 form the paper web 2.

Figure 3 shows another embodiment. The protective material 10 has also been applied to the paper web 2 here. However, it has not been completely dried, so that the different layers of the paper web 2, which have been coated with the protective material 10 and are now being wound up, are connected into a single protective layer, since the protective material 10 of the different layers connects to one another. Therefore, in comparison to FIG. 2, only a single protective layer is produced, while seven separate protective layers are produced in FIG.

In the figures 4 to 9 different phases of a method are shown schematically, in which an end-side packaging is to be produced. FIG. 4 shows a front cover 26. It has a base body 28 which is designed in one piece with a tab 30. FIG. A first dividing line 32, which is designed as a perforation, extends over part of the circumference of the tab 30. A fold line 34 extends over a second part of the circumference of the tab 30. The tab 30 in the exemplary embodiment shown in FIG.

FIG. 5 shows that the tab 30 has been separated from the base body 28 of the front cover 26 along the first separating line 32 and folded up along the fold line 34 . An indentation 42 is formed so that the front cover 26 can be slid onto the shaft 20 . The second dividing line 40 is still undamaged in the exemplary embodiment shown in this process step and the two parts 36, 38 of the tab 30 have not yet been separated from one another. This changes in FIG. The first part 36 of the tab 30 is then folded over so that only one opening 44 remains open, through which the shaft 20 extends. The first part 36 of the tab 30 is glued to the base body 28 of the front cover 26 .

Then, as shown in FIG. 7, the paper roll is removed from the shaft 20 with the paper cover 26 shown in FIG. According to FIG. 8, the second part 38 of the tab 30 is then also folded down and the opening 44 as the second part of the indentation 42 is closed. FIG. 9 shows the completely closed end-side packaging in which both the first part 36 and the second part 38 of the tab 30 are glued to the base body 28 of the end cover 26 .

FIG. 10 schematically shows a further embodiment of an end cap 26. The opening 44 is in the form of a hole which is large enough to accommodate the shaft 20, which is not shown in FIG. In order to be able to slide the front cover 26 onto the shaft 20, the front cover 26 has a cut 46 which extends from the outer edge 48 of the front cover 26 to the opening 44. The material of the front cover 26 is designed so flexibly that no fold line is required to open the front cover 26 along the cut 46 and slide it onto the shaft.

FIG. 11 shows the base body 28 of a front cover 26. The base body 28 is composed of two cover halves 50. FIG. In its center is the opening 44, through which the shaft 20, not shown, extends when the front cover 26 is in place. Between the two cover halves 50 is the section 46, which now extends from the central opening 44 to the outer edge 48 of the base body 28 of the front cover 26. In the exemplary embodiment shown in FIG. 11, the two cover halves 50 are of identical design. This is advantageous, but not necessary. The two cuts 46 do not necessarily have to be arranged opposite one another and symmetrically to the center of the opening 44 . FIG. 12 schematically shows a base body 28 of a front cover 26, the representation of the specific configuration of the base body 28 being omitted. FIG. 12 illustrates the outer edge 48 of the base body 28, on which edge protection 52 is located. In the embodiment shown, it has a fastening ring 54 with which the edge protection 52 is fastened to the base body 28 of the front cover 26, for example glued on. The edge protection 52 has a plurality of flaps 56 which are distributed equidistantly over the circumference in the exemplary embodiment shown. This is an advantage, but not necessary. An irregular arrangement of the flaps 56 is also possible. They protrude beyond the outer edge 48 of the main body 28 and are used to connect the front packaging, which is reached through the front cover 26, to a peripheral packaging. For this purpose, the flaps 56 are folded and attached to the order catch packaging, for example glued.

Reference List

2 paper web 4 drying device 6 application device 8 scoop trough 10 protective material 12 anilox roller 14 doctor blade 16 application roller 18 drying device 20 shaft 22 sensor

24 electronic control

26 front cover

28 body

30 tab

32 first dividing line

34 fold line

36 first part

38 second part

40 second dividing line

42 indentation

44 opening

46 cut

48 outer edge

50 cover half

52 edge protection

54 fastening ring

56 flap

Claims

Patent Claims:

Claims 1. A method for producing a peripheral packaging for a paper roll, the paper roll having a wound paper web (2) and two opposite end faces and a peripheral surface which connects the end faces to one another, the method comprising the following steps:

- Application of a protective material (10) in liquid form to an end section of the paper web (2) by means of at least one application unit, the protective material being applied to one or two sides of the end section of the paper web,

- Winding up the end portion of the paper web (2), so that the Endab section forms at least one outer layer of the paper roll and

- Hardening of the protective material (10) so that a protective layer covering the peripheral surface is formed.

2. The method according to claim 1, characterized in that the end section is so long that it forms several outer layers of the paper roll when it is wound up, preferably at least three, particularly preferably at least five, more particularly preferably at least seven outer layers.

3. The method according to claim 1 or 2, characterized in that the hardening of the protective material (10) takes place before the end section is wound up.

4. The method according to claim 1 or 2, characterized in that the end section is wound up as long as the protective material (10) has not yet fully cured, so that the protective material (10) preferably has several outer layers of the paper roll formed by the end section during curing connects.

5. A method of manufacturing end-to-end packaging for a roll of paper, wherein the roll of paper has a wound paper web (2) and two opposite ends and a peripheral surface connecting the ends to one another, the method comprising the following steps: - Providing a front cover (26) having a base body (28) with an opening (44) and a tab (30) for covering the Publ opening (44), wherein the base body (28) and the tab (30) preferably in one piece are trained together

- arranging the front cover (26) on the shaft (20) in such a way that the front cover (26) rests against a front side of the paper roll and the shaft (20) runs through the opening (44),

- removing the paper roll from the shaft (20) and

- Cover the opening (44) with the tab (30).

6. The method according to claim 5, characterized in that the front cover (26) is pushed onto the shaft (20) before the paper web (2) is rolled up.

7. The method according to claim 5, characterized in that the opening (44) is an indentation (42) and the front cover (26) on the shaft (20) is scho ben.

8. The method according to any one of claims 5 to 7, characterized in that the tab (30) is never connected to the base body (28) over at least part of its circumference along a separating line, which preferably has a perforation, the tab ( 30) must be separated from the base body (28), preferably along the dividing line, before the front cover (26) is pushed onto the shaft (20).

9. The method according to any one of claims 7 or 8, characterized in that the tab (30) has a first part for covering a first part of the indentation (42) and a second part for covering a second part of the indentation (42), wherein the first part of the indentation (42) from the first part of the flap (30) is covered before the paper roll from the

Shaft (20) is removed.

10. The method according to any one of claims 5 to 9, characterized in that the base body (28) and the tab (30) are made of a protective material (10) coated paper material or cardboard material.

11. A method for producing packaging for a paper roll, the paper roll having a wound paper web (2) and two opposite end faces and a peripheral surface which connects the end faces to one another, the method having the following steps:

- Manufacture of a peripheral packaging according to any one of claims 1 to

4,

- Producing at least one end-side packaging according to one of claims 5 to 11,

- Connecting the at least one end-of-line packaging to the peripheral packaging.

12. The method according to claim 11, characterized in that two end faces of packaging are produced for one of the two end faces of the paper roll.

13. The method according to claim 11 or 12, characterized in that the protective material (10) for the peripheral packaging and the protective material (10) for the at least one end packaging is identical.

14. The method according to any one of claims 11 to 13, characterized in that a diameter of at least one end cover (26) is larger than the diameter of the paper roll and a part of the end cover (26) is folded over onto the peripheral packaging in order to cover the end packaging with to connect the bulk packaging.

15. The method according to any one of claims 11 to 14, characterized in that an edge protection is applied along the edges of the paper roll, along which the peripheral surface adjoins the end faces, after the peripheral packaging is connected to the at least one end packaging or to connect the perimeter packaging to the end packaging.