DK150737B

DK150737B - CARTON PACKAGING WITH CLOSED CLOSES FOR SEMI-AUTOMATIC CLOSING

Info

Publication number: DK150737B
Application number: DK438284A
Authority: DK
Inventors: Frode Joergensen-Beck; Heinrich Wilhelm Lambach
Original assignee: Schur Eng As
Priority date: 1984-09-14
Filing date: 1984-09-14
Publication date: 1987-06-09
Also published as: ATE49550T1; DK438284D0; DE3575400D1; NO165909C; NO165909B; NO853577L; DK438284A; DK150737C; EP0178702A2; EP0178702A3; EP0178702B1

Abstract

For manual packing of various objects is used a box member which is erected to form a rectangular tube having at both ends four closing flaps, of which first two side flaps (2) are folded in for closing the box end, whereafter a third flap (4) and finally a fourth flap (6) are folded in, the fourth flap (6) being glued to the outside of the third flap (4). The folding in and the glueing of the third and fourth flap may be effected by a simple apparatus, which, however, requires the two side flaps (2) to be entirely folded in. In practice it has been necessary, therefore, to manually hold and guide the boxes during their introduction into the closing apparatus. The invention provides for a special corner connection (8) between the respective two side flaps and the said third flap, whereby the third flap (4) will act as an arresting member for the folded in side flaps (2), such that these flaps are prevented from leaving their folded in positions, while the third flap (4), upon a temporary outward folding during the folding in of the side flaps (2), will reassume its normal position for final closing in the closing apparatus.

Description

150737150737

Den foreliggende opfindelse angår en kartonemballage af den i krav 1's indledning angivne art. En sådan emballage er opfoldelig til dannelse af et rektangulært rør med lukkeflige ved begge ender, idet emballagen er beregnet 5 til gennem den ene ende at modtage en genstand til emballering og til derefter at lukkes ved den pågældende ende ved successiv indfoldning af lukkefligene, nemlig først en indfoldning af de to overfor hinanden beliggende sideflige, dernæst en indfoldning af lukkefligen på en tre-10 die side af emballagen og endelig en indfoldning af lukkefligen på dennes modstående fjerde side, hvorved emballagen kan slutlukkes ved fastgørelse f.eks. ved limning af den fjerde lukkeflig til den tredie lukkeflig.The present invention relates to a carton packaging of the kind specified in the preamble of claim 1. Such packaging is foldable to form a rectangular tube with closure tabs at both ends, the packaging being intended to receive through one end an article for packaging and then to be closed at that end by successively folding the closure tabs, namely a folding of the two opposite side tabs, then a folding of the closing tab on a three-sided side of the packaging and finally a folding of the closing tab on its opposite fourth side, whereby the packaging can be closed by attaching e.g. by gluing the fourth closure tab to the third closure tab.

Der er forlængst udviklet maskiner til at udføre en fyld-15 ning og en lukning af disse emballager, men maskineriet er kostbart og vil derfor forudsætte, at der arbejdes med stor kapacitet. Ved helt små kapaciteter indfylder man genstandene manuelt og lukker emballagerne manuelt ved at stryge lim på den fjerde lukkeklap, medens man 20 ved mellemkapaciteter kan betjene sig af simple apparater til udførelse af lukningen. Disse apparater kan håndtere emballagerne ved et gennemløb af disse, idet hver emballage indføres efter manuel indfoldning af de to første lukkeflige, men med tredie og fjerde lukkeflig 25 sideværts udstående fra emballagen. Apparatet udvirker så, at tredie lukkeflig indfoldes, at der smøres lim på den fjerde lukkeflig, og at denne slutteligt indfoldes.Machines have long been developed to carry out filling and closure of these packages, but the machinery is expensive and will therefore require great capacity to work. At very small capacities, the objects are filled manually and the packages are manually closed by ironing glue on the fourth closure flap, while at intermediate capacities 20 can be operated by simple devices for performing the closure. These apparatus can handle the packages through a passage thereof, each package being inserted after manually folding in the first two closing tabs, but with the third and fourth closing tab 25 laterally projecting from the packaging. The apparatus then causes the third closure tab to be folded, to glue on the fourth closure tab, and to finally fold it.

Der optræder herved det problem, at et lukkeapparat i rimelig enkel udførelse kun virker med den fornødne sik-30 kerhed, når de to første lukkeflige er blevet helt indfoldet og vel at mærke forbliver indfoldet, indtil ind-eller nedfoldningen af den tredie lukkeflig påbegyndes i lukkeapparatet. På grund af den spænding, der opstår i kartonmaterialet ved indfoldningen af hver af de to 35 første lukkeflige, er det imidlertid vanskeligt eller 150737 2 besværligt at opnå, at de to lukkeflige forbliver helt indfoldede, dvs. man skal nærmest holde på dem, medens emballagen indføres i lukkeapparatet. Tilsvarende kan man ikke ekspedere emballager til et magasin, hvorfra 5 lukkeapparatet selv kan hente emballagerne til successiv lukning, med mindre man vælger en apparatmæssigt langt dyrere løsning.There is thus the problem that a closure apparatus in reasonably simple design only works with the required safety when the first two closure tabs have been fully folded and, noticeably, remain folded until the folding or folding down of the third closure tab is initiated. closing apparatus. However, due to the tension created in the carton material by the folding of each of the first two closure tabs, it is difficult or difficult to achieve that the two closure tabs remain fully folded, ie. they should almost be kept while the packaging is inserted into the sealing device. Similarly, packaging cannot be dispatched to a magazine from which the closing device itself can retrieve the packages for successive closure unless a much more expensive solution is chosen.

Opfindelsen har til formål at løse det her nævnte problem, og bygger på den erkendelse, at der ikke kræves nogen mo-10 difikation af apparatet, når man i stedet sørger for at indrette emballagerne på en sådan måde, at der ved ind-foldningen af de to første lukkeflige sker en aktiv fastholdelse af fligene i den lukkede stilling. Det er ved opfindelsen indset, at dette kan lade sig gøre 15 på enkel måde uden væsentligt forøgede emballageomkostninger eller endda helt uden ekstra omkostninger eller andre former for ulemper.The invention aims to solve the above-mentioned problem, and is based on the recognition that no modification of the apparatus is required when, instead, it is arranged to arrange the packages in such a way that when folding the the first two closing tabs are actively held by the tabs in the closed position. It is understood by the invention that this can be done in a simple manner without substantially increased packaging costs or even at no additional cost or other disadvantages.

Emballage ifølge opfindelsen er ejendommelig ved det i krav 11 s kendetegnende del angivne. De nævnte skrå 20 bukkelinier ved de modstående sider af den tredie lukkeflig afgrænser således strimmelstykker, som under samtidig indfoldning af de to første lukkeflige vil udbuk-kes til udsvingning af den tredie lukkeflig, indtil de to første sidelukkeflige er helt eller næsten helt 25 indfoldet, idet strimmelstykkerne vil være helt omfoldede til anlæg mod indersiden af den tredie lukkeflig.Packaging according to the invention is characterized by the characterizing part of claim 11. Said inclined 20 bending lines at the opposite sides of the third closure tab thus define strips which, while simultaneously folding the first two closure tabs, will bulge to oscillate the third closure tab until the first two side closure tabs are fully or nearly fully folded, the strip pieces being completely folded into abutment against the inside of the third closure tab.

Herved vil den tredie lukkeflig være fri til fra sin udådsvungne tilstand at svinge tilbage mod sin oprindelige fra enden af emballagen udadragende tilstand, og 30 denne tilbagesvingning sker af sig selv ved den materialespænding, som er opbygget under udsvingningen af den tredie lukkeflig. Når den tredie lukkeflig herved svinger tilbage eller blot et stykke tilbage, vil de to første sidelukkeflige være spærret mod at kunne udsvinges 150737 3 fra deres indfoldede stillinger, da det vil kræve et betydeligt udadrettet tryk på disse flige at udvirke en sådan hastig udadgående svingning af den tredie lukkeflig, som vil være forudsætningen for, at de to første sideluk-5 keflige overhovedet kan udfoldes.Hereby, the third closure tab will be free to swing back from its extruded state toward its original state from the end of the packaging, and this reversal occurs by itself by the material stress built up during the swing of the third closure tab. When the third closure tab swings back or just a little way back, the first two side closure tabs will be prevented from being pivoted from their folded positions, as it will require considerable outward pressure on these tabs to effect such rapid outward swinging. the third closure tab, which will be the condition for the first two side closure tabs to unfold at all.

Det skal nævnes, at det for så vidt er kendt at sammenfolde æskehjørner på den her nævnte måde, blot uden at denne sammenfoldning under anvendelse af trekantede forbindelsesfelter mellem henholdsvis de to første og 10 den tredie lukkeflig har haft nogensomhelst relevans til det her betragtede problem. Ved de pågældende kendte hjørnefoldninger er der tale om trekantfelterne, der er helt intakte, f.eks. for udvirkning af en for opfindelsen irrelevant overfladesvejsning af trekantfelterne 15 til indersiden af den tredie lukkeflig og/eller til ydersiden af de to første lukkeflige efter indfoldning af den tredie lukkeflig.It should be mentioned that it is known to collapse box corners in the manner mentioned herein, but without this collapse using triangular connection fields between the first two and the third closure tab, respectively, to have any relevance to the problem considered here. The known corner folds in question are triangular fields which are completely intact, e.g. for effecting an irrelevant surface welding of the triangle panels 15 to the invention to the inside of the third closure tab and / or to the outside of the first two closure tabs after folding in the third closure tab.

Ved anvendelse af sådanne intakte trekantfelter vil ved opfindelsen opstå det problem, at de sammenfoldede hjør-20 nefelter ved siderne af den tredie lukkeflig vil opvise en betragtelig tykkelse, der giver anledning til en uønsket "uflad" lukning, når til sidst den fjerde lukkeklap foldes til klæbende anlæg mod ydersiden af den tredie lukkeflig.By using such intact triangular fields, the invention creates the problem that the folded corner panels at the sides of the third closure tab will exhibit a considerable thickness which gives rise to an undesirable "unflattering" closure when the fourth closure flap is eventually folded. for adhesive systems to the outside of the third closure tab.

25 Ved emballagen ifølge opfindelsen er på denne baggrund de nævnte trekantområder således fritskårne langs henholdsvis de fælles hjørnelinier og de skrå foldelinier, at den aktive forbindelse mellem hver af de to første og den tredie lukkeflig som nævnt vil bestå af et smalt 30 strimmelstykke mellem den ydre ende eller overside af hver af de to første lukkeflige og den ydre ende af den tredie lukkeflig ved dennes overgang til det nævnte trekantede hjørneområde. I den indfoldede tilstand af de to første lukkeflige vil de pågældende kartonstrim- 4 150737 ler, soirt vil udøve den nævnte låsevirkning på de ydre ender af de to første lukkeflige, være beliggende et godt stykke inden for emballagens ydre hjørner ved den pågældende endeflade af emballagen, og den fjedre lukkeflig kan 5 derfor fastlimes til ydersiden af den tredie lukkeflig på en sådan måde, at den ikke udadtil afslører nogen forøget tykkelse af en del af hjørneområdet.In the background of the packaging according to the invention, the said triangle areas are thus cut free along the common corner lines and the inclined fold lines, respectively, that the active connection between each of the first two and the third closure tab, as mentioned, will consist of a narrow strip between the outer end or upper side of each of the first two closing tabs and the outer end of the third closing tab at its transition to said triangular corner area. In the folded-in state of the first two closure tabs, the cardboard strips concerned will exert said locking action on the outer ends of the first two closure tabs, located well within the outer corners of the package at the respective end surface of the packaging. and, therefore, the spring closure tab can be glued to the outside of the third closure tab in such a way that it does not reveal externally any increased thickness of a portion of the corner area.

Opfindelsen, som er nærmere defineret i patentkravene, forklares i det følgende nærmere under henvisning til 10 tegningen, på hvilken fig. 1-5 er perspektiviske billeder af den ene ende af en emballage ifølge opfindelsen vist i fremadskridende faser under lukningen.The invention, which is further defined in the claims, is explained in more detail below with reference to the drawing, in which: FIG. 1-5, perspective views of one end of a package according to the invention are shown in progressive stages during the closure.

Den viste emballage er en kartonæske, der fra kartonnage-15 fabrikken er leveret i flad rørform, hvorfra æsken inden brugen opfoides til den i fig. 1 viste rektangulære form.The packaging shown is a carton box, delivered from the cartonage-15 factory, in flat tubular form, from which the box before use is fed to the one shown in FIG. 1 is rectangular in shape.

Den åbne ende af æsken har to modstående sideflige 2, en nedre, lukkeflig 4 og en øvre lukkeflig 6. Hjørnerne mellem fligen 6 og de to sideflige 2 er på sædvanlig måde 20 opslidset, medens den nedre flig 4 er forbundet sammenhængende med de to sideflige 2 gennem strimmelstykker 8.The open end of the box has two opposite side tabs 2, one lower, closing tab 4 and one upper closure tab 6. The corners between tab 6 and two side tabs 2 are usually slit 20 while the lower tab 4 is connected to the two side tabs 2 through strip pieces 8.

Den modstående, ikke viste ende af æsken vil normalt være udformet på ganske tilsvarende måde, omend dette ikke er nogen betingelse; eksempelvis kan æskeemnet ved den 25 anden ende være udformet med en såkaldt selvrejsende bund.The opposite, not shown end of the box will usually be designed in a similar manner, although this is not a condition; for example, the box blank at the other end may be formed with a so-called self-raising base.

De nævnte strimmelstykker 8 udgør hver et rudiment af et trekantet yderfelt af den nedre flig 4, idet der mellem felterne 4 og 8 er tildannet en bukkelinie a med 30 retning mod rodhjørnet mellem fligene 4 og 2. Bukkeli- 150737 5 nien a overgår indefter i en vinkelslidse, hvis ene gren 10 afgrænser strimmelstykket 8, og hvis anden gren 12 forløber indad langs hjørnekanten mellem fligene 4 og 2.Said strip pieces 8 each constitute a rudiment to a triangular outer field of the lower tab 4, a bending line a of 30 being formed towards the root corner between the tabs 4 and 2. A bending line a an angular slot whose one branch 10 defines the strip 8 and the other branch 12 extends inwardly along the corner edge between the tabs 4 and 2.

På fligen 4 efterlader vinkelslidsen 10,12 et udragende 5 trekantområde 14.On tab 4, the angular slot 10,12 leaves a protruding triangular area 14.

Når den genstand, som skal emballeres, er indfyldt i æsken, anbringer man denne i den i fig. 1 viste liggende stilling. Derefter trykker man sidefligene 2 indad ved at trykke med en finger på området lige ud for strimmel-10 stykket 8. Bukkelinierne er præget fra oversiden, og ved indtrykningen af sidefligen 2 vil strimmelstykkerne 8 derfor begynde at skyde den øvre flig 4 opad, jfr. fig.When the article to be packed is filled into the box, it is placed in the box of FIG. 1. Then, the side tabs 2 are pressed inward by pressing with a finger on the area just off the strip 10 piece 8. The bending lines are embossed from the upper side, and when the side tab 2 is pressed, the strip pieces 8 will therefore start to push the upper tab 4 upwards, cf. FIG.

2. Denne opskydning og tilhørende opsvingning af fligen 4 vil fortsætte, indtil sidefligene ved indfoldningen 15 når til den i fig. 3 viste stilling, hvor strimmelstykkerne 8 er næsten lige opragende.2. This displacement and associated swinging of tab 4 will continue until the side tabs at fold-in 15 reach the one shown in FIG. 3, where the strip pieces 8 are almost equally upright.

Når sidefligene 2 trykkes forbi den stilling, hvori strimmelstykkerne 8 står lodret, begynder den øvre flig 4 at svinges nedad ved sin egen spænding, og ved--den næsten 20 smækagtige nedsvingning til vandret (fig. 4) eller lidt over vandret påvirkes sidefligene 2 gennem strimmelstykkerne 8 til at indfoldes helt. Der kræves herefter et ganske stort tryk indefra mod sidefligene 2 for at åbne dem igen, og i praksis er der tale om en selvholdende 25 lukket stilling af sidefligene.When the side tabs 2 are pushed past the position in which the strip pieces 8 are vertical, the upper tab 4 begins to pivot downward at its own tension, and by the - almost 20 sneaky downward swing to the horizontal (Fig. 4) or slightly above the horizontal, the side tabs 2 are affected. through the strips 8 to be fully folded. Then, quite a large amount of pressure is required from the inside towards the side tabs 2 to open them again, and in practice this is a self-holding closed position of the side tabs.

Hvis æsken er udformet på tilsvarende måde i den anden ende, kan man begynde med at lukke eller halvlukke denne som ovenfor beskrevet, hvorved sidefligene vil danne et indføringsstop for den genstand, der skal emballeres.If the box is designed in a similar way at the other end, you can start by closing or half-closing it as described above, whereby the side tabs will form an insertion stop for the item to be packaged.

30 De delvis lukkede æsker med det i fig. 4 viste udseende kan afleveres til et magasin for det nævnte, enkle klæbe-lukkeapparat, som vil sørge for at folde overfligen 4 nedad (fig. 5), at påføre lim på oversiden af den nedre lukkeflig 6, og at svinge denne flig opad til fastklæb- 150737 6 ning mod fligen 4 i det område, der er vist skraveret i fig. S, hvorefter emballagen er færdig.The partially closed boxes with the one shown in FIG. 4 can be delivered to a magazine for said simple adhesive closure apparatus which will arrange to fold the tab 4 downwards (Fig. 5), to apply glue to the upper side of the lower closure tab 6 and to swing this tab upwards to adhering to tab 4 in the area shown in the shade of FIG. S, after which the packaging is finished.

Det vil af fig. 5 ses, at de udragende trekantområder 14 på enderne af lukkefligen 4 tjener det formål, at de kan 5 medvirke til klæbefastholdelsen af yderfligen 6, således at denne fastklæbes over hele sin bredde. Områderne 14 ligger an mod fligene 2 med kun en enkelt lagtykkelse, hvorfor der på trods af foldeforbindelsen i hjørnerne kan frembringes en pæn flad tillukning af fligene. Områderne 10 med dobbelt lagtykkelse, dvs. ved de nedfoldede strimmelstykker 8, er beliggende så langt fra enderne af klæbeområdet, at de let kan trykkes lidt ind i æsken ved lukningen af den yderste flig 6, dvs. de benyttede foldeforbindelser vil være uden synsmæssig betydning for luknin-15 gen.It will be seen from FIG. 5 it is seen that the protruding triangular areas 14 on the ends of the closure tab 4 serve the purpose of assisting 5 in the adhesion retention of the outer tab 6 so that it is adhered to its entire width. The areas 14 abut the tabs 2 with only a single layer thickness, so that despite the folding connection in the corners, a nice flat closure of the tabs can be produced. The areas 10 of double layer thickness, i.e. at the folded strip pieces 8, are located so far from the ends of the adhesive area that they can easily be pressed slightly into the box at the closure of the outer tab 6, ie. the folding compounds used will be of no visual significance to the closure.

Æsken ifølge opfindelsen kan fremstilles ligeså billigt som konventionelle æsker med fire usammenhængende lukke-flige, idet der blot skal benyttes en modificeret stanseform til fremstilling af æskeemnet.The box according to the invention can be manufactured as cheaply as conventional boxes with four incoherent closure tabs, only having to use a modified punch mold to make the box blank.