SE544350C2 - Package blank for a package holding a bobbin, and a package - Google Patents

Abstract

The disclosure relates to a package blank (100) configured to be erected and thereby form a package for holding a bobbin (300), the package blank comprising: a set of side wall panels comprising two side wall panels (101, 103) configured to form two opposing outer side wall panels of the package, wherein each outer side wall panel is foldably connected to a respective inner side wall bottom flap (104) and a respective inner side wall top flap (106), wherein respective inner side wall bottom flap (104) is configured to form an inner side of a bottom part of respective side wall and is provided with an upwardly facing cut-out (108) configured to receive an associated end portion of a bobbin (300), and wherein the respective inner side wall top flap (106) is configured to form an inner side of a top part of the respective side wall and is provided with a downwardly facing cut-out (110) configured to at least partly cap the associated end portion of said bobbin (300). Also disclosed is a package formed of the package blank, a bobbin and a sleeve blank (400) configured to be folded into a bobbin coil.

Description

PACKAGE BLANK FOR A PACKAGE HOLDING A BOBBIN, A BOBBIN ANDA SLEEVE BLANK THEREFOR Field of the invention The invention relates to a package blank configured to be erected andthereby form a package for holding a bobbin.

The invention also relates to a bobbin for placement in such apackage. The invention also relates to a sleeve blank for forming such abobbin.

Background artWhen designing a bobbin, it is often desirous to take into account a number of different design criteria. The bobbin should e.g. often be designedsuch that it makes efficient use of the material, be easy to transport to thepoint of use, be easy to prepare for use, and it should provide a strong reelstructure. lt should be strong during handling and it should be stable in anerected state. lt is often also desirous to design a bobbin that can be transported with an elongated product wound around such a bobbin.Bobbins are used to wind various elongated products from thread to electrical cords. Cardboard reels are beneficial since they do not take upmuch space before they are erected, and thus allow for space efficienttransport in a flat laid state. Often, when the elongated product has beenwound on the bobbin, the bobbins are transported in boxes or packagesprotecting the elongated product. There exist numerous attempts to addressthe above design criteria in connection to designing a box for a bobbin madeof cardboard material.

US8662433 discloses a cable reel package including a box having atop, a bottom, two opposing side walls, a front wall and a back wall. Each sidewall comprising a slot with an upper end forming a holder for a reel. Thepackage further comprises an axle member mounted in the slots and a poolmounted onto the axle member. The front wall may comprise a pay-outaperture being generally rectangular in shape.

US2005035240 discloses a container for a roll of a wire. The containerhas a top, a bottom, two opposing side walls, a front wall and a back wall.

Each side wall comprising a slot with an upper end forming a holder for a reel.

The container further comprises additional side top panels holding the roll inplace by being folded down over the roll when said roll of wire is placed in thecontainer.lt may be noted that none of the prior art documents discloses a package for a bobbin which adequately addresses the set of design criteriathat the reel should make efficient use of the material, be easy to transport tothe point of use, and provide a strong reel structure.

Summarv of the inventionlt is an object of the invention to provide a package which addressesthe set of design criteria that the package should be mechanically stable andprovide a strong structure, it should be easy to erect, and it should provide asimple solution to holding a bobbin or a reel. lt is also an object of theinvention to provide a package that is easy to transport to the point of use.To achieve at least this object and also other objects that will beevident from the following description, a package blank, a bobbin, a packageand a sleeve blank is provided according to the present invention. Preferredembodiments of the device will be evident from the dependent claims.According to a first aspect, there is provided a package blank configured to be erected and thereby form a package for holding a bobbin.The package blank comprises a set of side wall panels comprising a first sidewall panel, a second side wall panel and a third side wall panel being foldablyinterconnected and arranged one after the other along a longitudinal directionof the blank as seen in a flat laid state of the package blank. The first andthird side wall panels, are configured to form two opposing outer side wallpanels of the package. Each outer side wall panel is foldably connected to a respective inner side wall bottom flap and a respective inner side wall top flap.

The respective inner side wall bottom flap and the respective inner side walltop flap are positioned on opposing transversal sides, as seen in a flat-laidstate of the package blank, of the respective outer side wall panel. The respective inner side wall bottom flap is configured to form an inner side of abottom part of the respective side wall and is provided with an upwardlyfacing cut-out configured to receive an associated end portion of a bobbin.The respective inner side wall top flap is configured to form an inner side of atop part of the respective side wall and is provided with a downwardly facingcut-out configured to at least partly cap the associated end portion of saidbobbin. The upwardly facing cut-out may be shaped such that the associatedend portion of the bobbin is rotatable in and re|ative to the upwardly facingcut-out about a rotationa| axis of the bobbin. Alternatively, the upwardly facingcut-out may be shaped such that the associated end portion of the bobbin isnot rotatable in and re|ative to the upwardly facing cut-out about a rotationa|axis of the bobbin. The bobbin may be formed of one or more pieces beingdesigned to be rotated as a single unit. Alternatively, the bobbin may beformed as an outer rotatable unit formed of one or more pieces beingdesigned to be rotatable re|ative to one or more other pieces forming a centralshaft. ln case the bobbin is formed as a single rotatable unit, it is preferredthat the upwardly facing cut-out is shaped such that the associated endportion of the bobbin is rotatable in and re|ative to the upwardly facing cut-outabout a rotationa| axis of the bobbin. ln case the bobbin is formed with anouter rotatable unit and a central shaft, the central shaft may, but need not, berotatable in and re|ative to the upwardly facing cut-out. The correspondingreasoning also applies for the downwardly facing cut-out. The bobbin may,but need not, be rotatable in and re|ative to the downwardly facing cut-out.With such a design, it is possible to provide a package for holding abobbin that is stable, easy to erect, and easy to transport to the point of use.The design with an inner side wall top flap and an inner side wallbottom flap being provided with cut-outs which face each other, and which areconfigured to receive an associated end portion of a bobbin allows for thepackage blank to be erected into a package without any use of adhesive,hence the assembly of the package may be facilitated. By the respectiveinner side wall bottom flap comprising a cut-out for receiving an associatedend of a bobbin, a stable package for holding a bobbin may be provided. This since the bottom part of the respective inner wall bottom flap may act as asupport for holding the bobbin in its desired place.

By the inner side wall top flap having a cut out configured to partly capthe associated end of the bobbin, a locking mechanism for holding the bobbinin place may be provided. This since the bobbin is mechanically locked inplace from at least two directions. The configuration may prevent the bobbinfrom moving in an upward or downward motion. Thus, there is provided apackage with a reduced risk of displacement of the bobbin when an elongatedproduct that has been wound around the bobbin is un-winded during usage ofthe package.

Each inner side wall bottom flap may be foldable relative to therespective outer side wall panel, along two separate fold lines forming anintermediate panel between the two separate fold lines. The intermediatepanel may be configured to form part of a floor panel of the package. By this,the bobbin is provided with extra mechanical support and thus the bobbinmay be held in a desired place. The inner side wall flap may be folded suchthat an angle is formed between the inner side wall flap and the intermediatepanel such that a desired support is created. The angle may provideadditional upholding support for the bobbin.

The two separate fold lines may be parallel. This may provide an evenupholding support for the bobbin.

The second side wall panel may be configured to form a front wallpanel of the package. The second side wall panel may be foldably connectedto a front floor panel and a front top panel. The front floor panel and the fronttop panel may be positioned on opposing transversal sides, as seen in a flat-laid state of the package blank, of the second side wall panel. lt is preferred that the set of side wall panels further comprises a fourthside wall panel being configured to form a rear wall panel of the package. Thefourth side wall panel may be foldably connected to a rear top panel and arear floor panel. The rear floor panel and the rear top panel may be positionedon opposing transversal sides, as seen in a flat-laid state of the packageblank, of the fourth side wall panel.

The "front" of the package and the “rear” of the package are mainlylabels used to differentiate the different side wall panels from each other andare based on the orientation of the package as used in the drawings. ln apreferred embodiment, the panel |abe||ed front wall panel is actually the frontwall panel. However, it is also conceivable that in actual use, the orientationmay be different such that the panel labelled rear wall panel may be used asa front wall panel. lt is preferred that the blank is made of paper-based material. Thepaper-based material may be cardboard. Paper-based material may provide alight weight package. Paper-based material is environmentally friendly andcan be recycled in a simple manner. Paper-based material may provide apackage that is easy to transport and handle before erection of the package.Paper-based material may provide mechanical stability when used for theblank.

The front wall panel may comprise a cut-out. The cut-out may beconfigured to allow out-feeding of an elongated product that has been woundup on the bobbin inside the package. The cut-out may be configured as aperforated cut-out such that there e.g. is presented a complete front wallpanel during transportation and where the front wall panel may be openedand present an opening defined by the cut-out when needed.

Each opposing outer side wall panel may further comprise a handlecut-out configured to be used as a handle. Each inner side wall top flappreferably comprises a handle cut-out configured to at least partly coincidewith the respective handle cut-out of the respective outer side wall panel. Bythis configuration, a simple to use package may be provided. By providinghandles, the package may in an erected state easily be moved around andtransportation thereof may be facilitated. Also, the handle-cut out may be inthe form of perforation allowing the user to remove or fold a portion of thepanel to form a handle.

According to a second aspect, there is provided a bobbin configured toreceive an elongated product being coiled or would around the bobbin. Thebobbin comprises: two opposing end panels, a central shaft extending along a geometrical axis; a sleeve blank comprising: a plurality of centre panels being arranged one after the otheralong a longitudinal direction and being foldable relative to each other alongtransversely extending fold lines, a plurality of corner panels, each corner panel being providedbetween two neighbouring centre panels at a centre portion, as seenalong a transverse direction, of the neighbouring centre panels,wherein each corner panel is connected to one of the two neighbouringcentre panels along a fold line, and is separated from, or separablefrom, the other of the two neighbouring centre panels by a cut line, or aperforation, a plurality of end cut-outs being provided in the centre panels ata transversal position outside the corner panels, each end cut-outextending across a fold line between neighbouring centre panels andeach having an extension in the longitudinal direction.

The sleeve blank is configured to be coiled into a bobbin coil by foldingthe centre panels relative to each other and to be positioned around thecentral shaft. Each one of the two opposing end panels is provided with a cut-out configured to receive a respective end of the bobbin coil.

The respective end of the bobbin coil may have a polygonal cross-section formed by transversely outer portions of the centre panels. The cut-out of the respective end panel has a shape being at least partly congruentwith the polygonal cross-section such that the respective end of the bobbincoil is insertable into the cut-out of the respective end panel to such an extentthat the end panel becomes positioned in register with the end cut-outs andsuch that the respective end panel is rotatable an angle about the geometricalaxis such that internal edge portions of the end panel enters into slits formedby the end cut-outs at the corners of the polygonal shape of the bobbin coil _Thereby, the end panels will be prevented from sliding in the transversedirection, or alternatively said prevented from sliding along the geometricalaxis, relative to the bobbin coil. Advantageously, the stability of the packagecomprising the bobbin may be increased. The transportation and handling of the package when an elongated product is wound around the bobbin, and thebobbin is placed in the package, may be facilitated by this configuration.

The s|eeve blank may further comprise a |ocking f|ap being provided ata first longitudinal position and a slit being provided at a second longitudinalposition, at a distance from the first longitudinal position, and being configuredto receive the |ocking f|ap when the s|eeve is fo|ded around the central shaft.lt is to be noted that the slit may be provided at any position of the s|eeve. Byway of example, the slit may be provided at a fold line, or in the middle of oneof the panels, etc.

The distance between the first and second longitudinal positions is atleast large enough to secure that there is a least one transversal fold line,preferably a plurality of transversal fold lines, between the centre panel towhich the |ocking f|ap is connected and the slit. Thereby, the coiling of thes|eeve blank will aid in keeping the |ocking f|ap positioned in the slit. lt is preferred that the bobbin is made of paper-based material. Paper-based material may provide a light weight package. Paper-based material isenvironmentally friendly and can be recycled in a simple manner. Paper-based material may provide a package that is easy to transport and handlebefore erection of the package. Paper-based material may provide amechanically stability to the bobbin.

According to a third aspect, there is provided a package. The packagecomprises a package blank according to the first aspect, and a bobbinaccording to the second aspect.

Advantages associated with the different features and preferredembodiments of the third aspect, the package, have been discussed in detailin the above in relation to the first and second aspects, the package blankand the bobbin. The discussion is equally valid in relation to the package. ltmay be noted that the various preferred embodiments or optional featuresdescribed above are equally applicable to the package.

According to a fourth aspect, there is provided a s|eeve blankconfigured to be fo|ded into a bobbin coil, the s|eeve blank comprising: a plurality of centre panels being arranged one after the other along alongitudinal direction and being foldable relative to each other alongtransversely extending fold lines, a plurality of corner panels, each corner panel being provided betweentwo neighbouring centre panels at a centre portion, as seen along atransverse direction, of the neighbouring centre panels, wherein each cornerpanel is connected to one of the two neighbouring centre panels along a foldline, and is separated from, or separable from, the other of the twoneighbouring centre panels by a cut line, or a perforation, a plurality of end cut-outs being provided in the centre panels at atransversal position outside the corner panels, each end cut-out extendingacross a fold line between neighbouring centre panels and each having anextension in the longitudinal direction.

The sleeve blank is configured to be coiled into a bobbin coil by foldingthe centre panels relative to each other. The bobbin coil is then in turnpreferably configured to be positioned around a central shaft and therebyform a bobbin, the central shaft preferably having a circular cross-section. lt may be noted that in case the end portions of the bobbin coil beingexposed outside the end panels is rotatable in and relative to the upwardlyand downwardly facing cut-outs, it is conceivable to design the bobbin withouta separate central shaft.

The sleeve blank may further comprise a locking flap being provided ata first longitudinal position and a slit being provided at a second longitudinalposition, at a distance from the first longitudinal position, and being configuredto receive the locking flap when the sleeve is folded around the central shaft. lt is preferred that the sleeve blank is made of paper-based material.

Advantages associated with the different features and preferredembodiments of the fourth aspect, the sleeve blank, have been discussed indetail in the above in relation to the second aspect, the bobbin. Thediscussion is equally valid in relation to the sleeve blank. lt may be noted thatthe various preferred embodiments or optional features are equally applicableto the sleeve blank.

The invention may also in short be said to relate to a package having afirst, a second and a third side wall, wherein the first and third side wallcomprises a respective inner side wall bottom flap being foldably connectedto respective side wall, wherein each respective inner side wall bottom flap isconfigured to be folded relative to the respective side wall and wherein eachinner side wall bottom flap comprises a cut-out configured to receive arespective end of a bobbin when the package is erected. The package furtherincludes a bobbin comprising two opposing end panels, a central shaftextending along a geometrical axis, and a sleeve blank. The sleeve blankcomprises a plurality of centre panels, a plurality of corner panels, eachcorner panel being provided between two neighbouring centre panels at acentre portion, and a plurality of end cut-outs being provided in the centrepanels at a transversal position outside the corner panels. The sleeve blank isconfigured to be folded around the central shaft to form a bobbin coil. Thebobbin is insertable into to package.

The invention may also in short be said to relate to a package blankconfigured to be erected and thereby form a package for holding a bobbin,the package blank comprising: a set of side wall panels comprising two sidewall panels configured to form two opposing outer side wall panels of thepackage, wherein each outer side wall panel is foldably connected to arespective inner side wall bottom flap and a respective inner side wall top flap,wherein respective inner side wall bottom flap is configured to form an innerside of a bottom part of respective side wall and is provided with an upwardlyfacing cut-out configured to receive an associated end portion of a bobbin,and wherein the respective inner side wall top flap is configured to form aninner side of a top part of the associated side wall and is provided with adownwardly facing cut-out configured to at least partly cap the associated endportion of said bobbin.

Generally, all terms used in the claims are to be interpreted accordingto their ordinary meaning in the technical field, unless explicitly definedotherwise herein. All references to "a/an/the [element, device, component,means, step, etc]" are to be interpreted openly as referring to at least oneinstance of said element, device, component, means, step, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do nothave to be performed in the exact order disclosed, unless explicitly stated.

Brief Description of the Drawinqs The above, as well as additional objects, features and advantages ofthe present invention, will be better understood through the followingillustrative and non-limiting detailed description of preferred embodiments ofthe present invention, with reference to the appended drawings, where thesame reference numerals will be used for similar elements, wherein: Fig.

Fig. 2 illustrates a package.

Fig. 3 illustrates a bobbin.

Fig. 4A illustrates a sleeve blank. 1 illustrates a package blank.

Fig. 4B illustrates a folded sleeve.Fig. 4C illustrates a bobbin coil.Fig. 5 illustrates an end panel of a bobbin.

Description of Embodiments The present invention will now be described more fully hereinafter withreference to the accompanying drawings, in which currently preferredembodiments of the invention are shown. This invention may, however, beembodied in many different forms and should not be construed as limited tothe embodiments set forth herein; rather, these embodiments are provided forthoroughness and completeness, and fully convey the scope of the inventionto the skilled person.

With reference, to Figs. 1 and 2, there is disclosed a package 200 anda package blank 100 for forming a wall structure of such a package 200. Thepackage further comprises a bobbin 300 for placement in the package 200.

The package 200 is formed by a package blank 100 being configuredto be erected into the wall structure of said package 200.

The package blank 100 has an extension in a longitudinal direction L,and an extension in a transverse direction T, as seen in a flat laid state of thepackage blank 100. 11 The package blank 100 comprises a set of side wall panels. The set ofside wall panels comprises a first side wall panel 101, a second side wallpanel 102, and a third side wall panel 103. Preferably, the set of side wallpanels comprises a fourth side wall panel 105. The side wall panels arefoldably interconnected and arranged one after the other along thelongitudinal direction L of the blank. The first and second side wall panels101 ,103 are configured to form two opposing outer side wall panels.

Each outer side wall panel is foldably connected to a respective innerside wall bottom flap 104 and a respective inner side wall top flap 106. Therespective inner side wall bottom flap 104 and the respective inner side walltop flap 106 are positioned on opposing transversal sides, as seen in a flat-laid state of the package blank, of the respective outer side wall panel.

Each respective inner side wall bottom flap 104 is configured to forman inner side of a bottom part of the respective side wall. Each respectiveinner side wall bottom flap 104 is provided with an upwardly facing cut-out108 configured to receive an associated end portion of a bobbin 300. Whenerecting the package, the inner side wall bottom flap is folded relative to therespective outer side wall panel such that each cut-out becomes upwardlyfacing. Accordingly, the bobbin can be placed in the upwardly-facing cut-outsacting as a holder.

Each inner side wall bottom flap 104 may be foldable relative to therespective outer side wall panel 101, 103 along two separate fold lines. Thetwo separate fold lines may form an intermediate panel 112 between the twoseparate fold lines. The intermediate panel 112 may be configured to formpart of a floor panel of the package. The two separate fold lines may extend inparallel.

Each respective inner side wall top flap 106 is configured to form aninner side of a top part of the respective side wall. The respective inner sidewall top flap 106 is provided with a downwardly facing cut-out 110 configuredto at least partly cap the associated end portion of said bobbin 300.

When a bobbin has been placed in the upwardly facing cut-outs of theinner side wall bottom flaps, the inner side wall top flaps are folded relative tothe respective outer side wall panel in a downward motion. Accordingly, the 12 downwardly facing cut-outs partly caps an upper side of the end of thebobbin. Thus, a mechanical lock is provided configured to hold the bobbin inplace and prevent it from moving in a side to side or upward/downwardmotion.

Each opposing outer side wall panel may comprise a handle cut-out.The handle cut-out may be configured to be used as a handle. lt is preferredthat each inner side wall top flap 106 also comprises a handle cut-out. lt isfurther preferred that the handle cut-out of the inner side wall top panel isconfigured to at least partly coincide with the respective handle cut-out of therespective outer side wall panel.

The second side wall panel 102 may be configured to form a front wallpanel of the package. The second side wall panel 102 is foldably connectedto a front floor panel 116, and a front top panel 114. The front floor panel 116and the front top panel 114 are positioned on opposing transversal sides, asseen in a flat-laid state of the package blank, of the second side wall panel.The front floor panel 116 may comprise a floor locking flap.

The fourth side wall panel 105 may be configured to form a rear wallpanel of the package 200. The rear wall panel may be foldably connected to arear top panel 118, and a rear floor panel 120. The rear floor panel 120 andthe rear top panel 118 may be positioned on opposing transversal sides, asseen in a flat-laid state of the package blank, of the fourth side wall panel 105.The rear floor panel 120 may comprise a floor slit configured to receive thefloor locking flap. By providing a floor locking flap and a floor slit formechanically locking the floor of the formed package, a package may beprovided that is sturdy without requiring adhesive.

Front and rear are mainly labels used to differentiate the different sidewall panels from each other and are based on the orientation of the packageas used in the drawings. ln a preferred embodiment, the panel labelled frontwall panel is actually the front wall panel. However, it is also conceivable thatin actual use, the orientation may be different such that the panel labelled rearwall panel may be used as front wall panel.

The front and rear top panels 114, 118 may be configured to be foldedsuch that a lid is formed when the package is erected. 13 As evident from Fig.1, the front side wall panel may comprise a cut-out.

Thus, as is disclosed the front wall panel may comprise the cut-out. The cut-out may be configured as a perforated cut-out such that the front wall panelmay be opened when needed.

The bobbin disclosed in Fig. 2 will now be described in more detail withreference to Figs. 3-5.

Fig. 3 discloses a bobbin 300 in its entirety. The bobbin 300 comprisestwo opposing end panels 302, a bobbin coil 401, and a central shaft 304. Thebobbin coil 401 is formed from a sleeve blank 400 folded around the centralshaft 304, which extends along a geometrical axis. The central shaft 304preferably has a circular cross-section. ln the preferred embodiment, endportions of the central shaft 304 is configured to be placed in the upwardlyfacing cut-outs of the inner side wall bottom flaps, and preferably also to becapped by the downwardly facing cut-outs of the inner side wall top flaps. ltmay be noted that the end portions of the central shaft 304 are exposed oneither side of the bobbin coil 401. The bobbin coil 401 may be rotatablerelative to the central shaft 304 about the geometrical axis. The central shaft304 may be rotatable in and relative to the cut-outs 108, 110 about thegeometrical axis.

Fig. 4 discloses a sleeve blank 400. The sleeve blank 400 comprises aplurality of centre panels 402, a plurality of corner panels 404 and a pluralityof end cut-outs 406. The centre panels 402 are arranged one after anotheralong a longitudinal direction L2. The centre panels 402 are foldable relativeto each other along transversely extending fold lines 403.

Each corner panel 404 is provided between two neighbouring centrepanels 402 at a centre portion, as seen along the transverse direction T2, ofthe neighbouring centre panels 402. Each corner panel 404 is connected toone of the two neighbouring centre panels 402 along a fold line. Each cornerpanel 402 is separated from, or separable from, the other one of the twoneighbouring centre panels by a cut-line or a perforation.

The end cut-outs 406 are each provided in the centre panels 402 at atransversal position outside the corner panels 404. Each end cut-out 406 14 extends across a fold line between two neighbouring centre panels 402. Eachcut-out has an extension in the Iongitudinal direction L2.

As evident from the figures, the s|eeve blank 400 may comprise alocking flap 408 and a slit 410 configured to receive the locking flap 408. Thelocking flap 408 may be provided at a first longitudinal position. The slit 410may be provided at a second Iongitudinal position. The second longitudinalposition is provided at a distance from the first longitudinal position. The slit410 may be configured to receive the locking flap 408 when the s|eeve 400 isfolded around the central shaft 304. The distance between the first andsecond Iongitudinal positions is at least large enough to secure that there is atleast one transversal fold line between the centre panel 402 to which thelocking flap 408 is connected and the slit 410. lt is preferred that there is aplurality of transversal fold lines between the centre panel 402 to which thelocking flap 408 is connected and the slit 410. lt is to be noted that the slit 410 may be provided at any position of thes|eeve blank 400. By way of example, the slit 410 may be provided as anextension along a fold line. ln another example the slit 410 may be providedin one of the panels. ln the disclosed embodiment, the s|eeve blank 400 comprises twolocking flaps 408, and two slits 410 for receiving a respective locking flap 408.The s|eeve blank 400 is configured to be folded into a bobbin coil 401 as seenin Fig. 4B.

As seen in Fig. 4C, the s|eeve blank 400 is configured to be coiled intoa bobbin coil 401 and to receive a central shaft 304. The bobbin coil 401 isformed by folding the centre panels 402 relative to each other.

By the provision of a locking flap 408 and a slit 410, a mechanicallystable bobbin coil 401 may be provided. The locking mechanism may reducethe risk of the s|eeve blank 400 unfolding at an untimely manner. The lockingmechanism may further facilitate the assembly of the bobbin coil 401 sincethe bobbin coil may be assembled without requiring any adhesive.

As evident from Fig. 5, the end panel 302 is provided with a cut-out502. The cut-out 502 is configured to receive a respective end of the bobbincoil 401, when forming the bobbin 300.

Each respective end of the bobbin coil 401 may have a polygonalcross-section formed by transversely outer portions of the centre panels 402.The cut-out of respective end panel 302 may thus have a shape being at leastpartly congruent with the polygonal cross-section. Accordingiy, the respectiveend of the bobbin coil 401 is insertable into the cut-out 502 of the respectiveend panel to such an extent that the end panel 302 becomes positioned inregister with the end cut-outs 406. The respective end panel 302 is rotatablean angle about the geometrical axis such that internal edge portions of theend panel 302 enters into slits formed by the end cut-outs 406 at the cornersof the polygonal shape of the bobbin coil 401. Thereby, the end panels will beprevented from sliding in the transvese direction, or alternatively said endpanels will be prevented from sliding along the geometrical axis, relative tothe bobbin coil 401.

Each end panel may comprise one or more cut-outs forming a handlefacilitating handling of the bobbin. lt will be appreciated that the present invention is not limited to theembodiments shown. Several modifications and variations are thusconceivable within the scope of the invention which thus is exclusively definedby the appended claims.

The person skilled in the art realizes that the present invention by nomeans is limited to the preferred embodiments described above. On thecontrary, many modifications and variations are possible within the scope ofthe appended claims.

Additionally, variations to the disclosed embodiments can beunderstood and effected by the skilled person in practicing the claimedinvention, from a study of the drawings, the disclosure, and the appendedclaims. ln the claims, the word "comprising" does not exclude other elementsor steps, and the indefinite article "a" or "an" does not exclude a plurality. Themere fact that certain measures are recited in mutually different dependentclaims does not indicate that a combination of these measured cannot beused to advantage. 16 lt may e.g. be noted that the two fold lines with an intermediate panel112 therebetvveen may be replaced with a single fold line. Such a design maye.g. be useful when the package blank is formed of a relatively thick material.

Claims (16)

1. Package blank (100) configured to be erected and thereby form apackage for holding a bobbin (300), characterized in the package blankcomprising: a set of side wall panels comprising a first side wall panel (101), asecond side wall panel (102) and a third side wall panel (103) being foldablyinterconnected and arranged one after the other along a longitudinal direction(L) of the blank as seen in a flat laid state of the package blank, wherein thefirst and third side wall panels (101, 103) are configured to form two opposingouter side wall panels of the package, wherein each outer side wall panel is foldably connected to arespective inner side wall bottom flap (104) and a respective inner side walltop flap (106), wherein the respective inner side wall bottom flap (104) andthe respective inner side wall top flap (106) are positioned on opposingtransversal sides, as seen in a flat-laid state of the package blank, of therespective outer side wall panel, wherein the respective inner side wall bottom flap (104) is configured toform an inner side of a bottom part of the respective side wall and is providedwith an upwardly facing cut-out (108) configured to receive an associated endportion of a bobbin (300), and wherein the respective inner side wall top flap (106) is configured toform an inner side of a top part of the respective side wall and is provided witha downwardly facing cut-out (110) configured to at least partly cap theassociated end portion of said bobbin (300).

2. Package blank (100) according to claim 1, wherein each inner sidewall bottom flap (104) is foldable relative to the respective outer side wallpanel (101, 103) along two separate fold lines forming an intermediate panel(112) between the two separate fold lines, the intermediate panel (112) beingconfigured to form part of a floor panel of the package. 18

3. Package blank (100) according to claim 2, wherein the two separatefold lines are parallel.

4. Package blank (100) according to any one of the previous claims,wherein the second side wall panel (102) is configured to form a front wallpanel of the package and is foldably connected to a front floor panel (116)and a front top panel (114), wherein the front floor panel (116) and the front top panel (114) arepositioned on opposing transversal sides, as seen in a flat-laid state of thepackage blank, of the second side wall panel.

5. Package blank (100) according to any one of the previous claims,wherein the set of side wall panels further comprises a fourth side wall panel(105) being configured to form a rear wall panel of the package and beingfoldably connected to a rear top panel (118) and a rear floor panel (120), wherein the rear floor panel (120) and the rear top panel (118) arepositioned on opposing transversal sides, as seen in a flat-laid state of thepackage blank, of the fourth side wall panel (105).

6. Package blank (100) according to any one of the previous claims,wherein the blank is made of paper-based material.

7. Package blank (100) according to claim 4, wherein the front wallpanel comprises a cut-out.

8. Package blank (100) according to any one of the previous claims,wherein each opposing outer side wall panel further comprises a handle cut-out configured to be used as a handle, and wherein each inner side wall topflap (106) preferably also comprises a handle cut-out configured to at leastpartly coincide with the respective handle cut-out of the respective outer sidewall panel. 19

9. Bobbin (300) configured to receive an elongated product beingwound around the bobbin, characterized in the bobbin comprising:two opposing end panels (302),a central shaft (304) extending along a geometrical axis;a sleeve blank (400) comprising:a plurality of centre panels (402) being arranged one after theother along a longitudinal direction (L2) and being foldable relative toeach other along transversely extending fold lines (403),a plurality of corner panels (404), each corner panel (404) beingprovided between two neighbouring centre panels (402) at a centreportion, as seen along a transverse direction (T2), of the neighbouringcentre panels (402), wherein each corner panel (404) is connected toone of the two neighbouring centre panels (402) along a fold line, andis separated from, or separable from, the other of the two neighbouringcentre panels by a cut line, or a perforation,a plurality of end cut-outs (406) being provided in the centrepanels at a transversal position outside the corner panels (404), eachend cut-out (406) extending across a fold line between neighbouringcentre panels (402) and each having an extension in the longitudinaldirection (L2),wherein the sleeve blank (400) is configured to be coiled into a bobbincoil (401) by folding the centre panels (402) relative to each other and to bepositioned around the central shaft (304), and wherein each one of the two opposing end panels (302) is providedwith a cut-out (502) configured to receive a respective end of the bobbin coil(401).

10. Bobbin (300) according to claim 9, wherein the respective end ofthe bobbin coil (401) has a polygonal cross-section formed by transverselyouter portions of the centre panels, wherein the cut-out (502) of the respective end panel (302) has ashape being at least partly congruent with the polygonal cross-section suchthat the respective end of the bobbin coil (401) is insertable into the cut-out of the respective end panel to such an extent that the end panel (302) becomespositioned in register with the end cut-outs (406) and such that the respectiveend panel (302) is rotatable an angle about the geometrical axis such thatinternal edge portions of the end panel (302) enters into slits formed by the end cut-outs (406) at the corners of the polygonal shape of the bobbin coil(401).

11. Bobbin (300) according to claim 9 or 10, wherein the sleeve blank(400) further comprises a locking flap (408) being provided at a first longitudinal position and a slit being provided (410) at a second longitudinal position, at adistance from the first longitudinal position, and being configured to receivethe locking flap (408) when the sleeve (400) is folded around the central shaft(304).

12. Bobbin (300) according to any one of claims 9-11, wherein thebobbin is made of paper-based material.

13. Package comprisinga package blank (100) according to any one of claims 1- 8 beingerected into a package, anda bobbin (300) according to any one of claims 9-12.

14. Sleeve blank (400) configured to be folded into a bobbin coil, characterized in the sleeve blank (400) comprising: a plurality of centre panels (402) being arranged one after the otheralong a longitudinal direction (L2) and being foldable relative to each otheralong transversely extending fold lines, a plurality of corner panels (404), each corner panel (404) beingprovided between two neighbouring centre panels (402) at a centre portion,as seen along a transverse direction (T2), of the neighbouring centre panels(402), wherein each corner panel (404) is connected to one of the two neighbouring centre panels (402) along a fold line, and is separated from, or 21 separable from, the other of the two neighbouring centre panels by a cut line,or a perforation, a plurality of end cut-outs (406) being provided in the centre panels ata transversal position outside the corner panels (404), each end cut-out (406)extending across a fold line between neighbouring centre panels (402) andeach having an extension in the longitudinal direction (L2), wherein the sleeve blank (400) is configured to be coiled into a bobbincoil (401) by folding the centre panels (402) relative to each other.

15. Sleeve blank (400) according to claim 14, further comprising: a locking flap (408) being provided at a first longitudinal position and a slit being provided (410) at a second longitudinal position, at adistance from the first longitudinal position, and being configured to receivethe locking flap (408) when the sleeve (400) is folded around the central shaft(304).

16. Sleeve blank (400) according to claim 14 or 15, wherein the sleeveblank (400) is made of paper-based material.