DK144003B

DK144003B - PACKAGING BOX WITH EASY FILLABLE PAGES

Info

Publication number: DK144003B
Application number: DK196978AA
Authority: DK
Inventors: R U Andersson; F T Hedberg; N T Hammarlund; Aa B Isberg
Original assignee: Akerlund & Rausing Ab
Priority date: 1977-05-09
Filing date: 1978-05-05
Publication date: 1981-11-16
Also published as: DK196978A; GB1598947A; DE2819708A1; SE7705341L; DK144003C; NO781614L; SE413876B; JPS53140171A

Description

1A A O O 31A A O O 3

Opfindelsen vedrører en emballagebakke med let udfoldelige sider, fortrinsvis beregnet til direkte indsættelse med indhold i en ovn og omfattende et bundpanel, sidevægge, der strækker sig fra bundpa-5 nelet og ved overkanterne har udad rettede kantflanger, hvilke sidevægge holdes rejst i stilling ved hjælp af foldbare sammenføjningsfelter, som er forbundet med de tilstødende sidevægge ved foldelinier, og som ligger an mod ydersiderne af det ene sæt sidevæg-10 ge og endvidere ved overkanterne har udad rettede flanger.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a packaging tray with easily unfoldable sides, preferably intended for direct insertion with contents into an oven and comprising a bottom panel, side walls extending from the bottom panel and having outwardly directed edge flanges, which side walls are held in position by means of of foldable joints, which are connected to the adjacent side walls by fold lines, which abut the outer sides of one set of side walls and furthermore at the upper edges have outwardly directed flanges.

Opfindelsen vedrører navnlig bakker, som indvendig har aluminiumfolie eller et andet materiale, der er vanskeligt at forsegle. Bakker, der indvendig er 15 forsynet med aluminiumfolie, er bl.a. blevet anvendt til bagebakker. Hensigten hermed er, at man skal kunne tilbyde forbrugeren en emballagebakke, der kan indsættes direkte i en almindelig bageovn. Bakken indeholder en såkaldt bageblanding, og det eneste forbru-20 geren har at gøre, er efter fjernelse af bakkens låg at tilsætte vand og derefter direkte at indsætte bakken med indhold i ovnen. Eftersom bakker af den nævnte art indeholder pulverformet materiale, kræves det først og fremmest, at de skal være tætte. I alminde-25 lighed er hjørnerne ved bakkens munding de mest kritiske steder set fra et tæthedssynspunkt.The invention relates in particular to trays which have aluminum foil or other material which is difficult to seal. Trays that are internally provided with aluminum foil include. been used for baking trays. The intention is to offer the consumer a packaging tray that can be inserted directly into a regular baking oven. The tray contains a so-called baking mix, and the only thing the consumer has to do is, after removing the tray lid, add water and then directly insert the tray with contents into the oven. Since trays of the aforementioned kind contain powdered material, they are first and foremost required to be dense. In general, the corners at the mouth of the hill are the most critical places from a density point of view.

Foruden kravet om tæthed fordres der af en bage-bakke af den nævnte art, at den skal være let at åbne, efter at bagningen er gennemført. Dvs. at man med et 30 enkelt greb skal kunne folde sidevæggene ud, uden at det bagte produkt beskadiges.In addition to the tightness requirement, a baking tray of the kind mentioned requires it to be easy to open after baking is completed. Ie that with a single grip it should be possible to unfold the sidewalls without damaging the baked product.

Kendte bakker af denne art omfatter et bundfelt, sidevægge og udvendige sammenføjningsfelter.Known trays of this kind include a bottom panel, side walls, and exterior joints.

Sidevæggene har foroven udad ombøjede kantflanger.The side walls have a curved edge flange at the top.

35 I bakkens hjørneområder er der tendens til, at der op- 2 144003 træder en bælgagtig konstruktion, der kan give anledning til fremkomsten af en ukontrollerbar luftspalte, så at tætheden går tabt i et sådant hjørne.35 In the corner areas of the tray, there is a tendency for a bellows structure to occur which may give rise to an uncontrollable air gap, so that the density is lost in such a corner.

Dette afhjælpes ifølge opfindelsen ved, at 5 hvert par af sidevæggenes kantflanger ud for bakkens hjørneområder har forlængede dele, at den forlængede del af kantflangen på den væg, mod hvilken sammenføjningsfeltet ligger an, er ført ind under den forlængede del af kantflangen af den anden hosliggen-10 de sidevæg, at sammenføjningsfelterne er således dimensioneret, at de herved presses sammen og deres delflige låses mod gensidig forskydning, og at sammenføjningsfelternes flanger endvidere er således udformet, at de vil danne stop for den først omtalte 15 flange og låse dennes forlængede del under de forlængede dele af den anden kantflange.This is remedied by the invention in that each pair of the edge flanges of the side walls beyond the corner areas of the tray has elongated portions, that the elongated portion of the edge flange of the wall against which the joining field abuts is inserted below the extended portion of the edge flange of the other enclosure. -10 the side walls, that the joint panels are dimensioned so that they are thereby pressed together and their partial members are locked against mutual displacement, and that the flanges of the joint panels are further designed to stop the first mentioned flange and lock its elongated part below the elongated portions of the other edge flange.

Ved den herved tilvejebragte låsning hindres dannelsen af den i det foregående nævnte luftspalte, så at tætheden opretholdes.By the locking provided, the formation of the air gap mentioned above is prevented so that the tightness is maintained.

20 I tilfælde af at bakkens sammenføjningsfelter består af to trekantede felter med hver sin udad rettede flange, kan der være udskæringer i de dele af de nævnte flanger, som ligger under de forlængede dele af de før nævnte kantflanger, hvorved konstruk-25 tionens dele låses yderligere sammen.In the case that the tray joining fields consist of two triangular fields with each of their outwardly directed flanges, there may be cuts in the portions of said flanges which lie below the extended portions of the aforementioned edge flanges, thereby locking the parts of the structure further together.

Ved en bakke, hvor den side af råemnet, der danner indersiden af bakken, over hele fladen er lamineret med aluminiumfolie eller et lignende materiale, kan hvert sammenføjningsfelt være tætnet mod ved-30 kommende sidevæg ved forsegling af den flangeside af sammenføjningsfeltet, der vender mod sidevæggen, mod den pågældende sidevægs kantflange. Herved opnås en god tæthed.In a tray where the side of the blank forming the inside of the tray is laminated over the entire surface with aluminum foil or a similar material, each joining field may be sealed to the adjacent sidewall by sealing the flange side of the joining field facing the side wall, against the edge flange of that side wall. This results in a good density.

Opfindelsen forklares nærmere i det følgende 35 under henvisning til tegningen, hvor 3 144003 fig. 1 viser et perspektivbillede af en kendt bakke anvendt som bagebakke, fig. 2 et delsnit efter linien II-II i fig. 1, fig. 3 i perspektivbillede en udførelsesform 5 for bakken ifølge opfindelsen, fig. 4 et delsnit efter linien IV-IV i fig. 3, fig. 5 skematisk foldningen af et sammenføjnings felt, fig. 6 et skematisk, perspektivisk delbillede 10 af et hjørne af bakken i fig. 3 set nedefra, og fig. 7 et emne til bakken i fig. 3.The invention will be further explained in the following with reference to the drawing, in which FIG. 1 is a perspective view of a known tray used as a baking tray; FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is a perspective view of one embodiment 5 of the tray according to the invention; FIG. 4 is a sectional view taken along line IV-IV of FIG. 3, FIG. 5 schematically shows the folding of a joining field; FIG. 6 is a schematic perspective view 10 of a corner of the tray of FIG. 3 is a bottom view, and FIG. 7 shows a blank for the ground in FIG. Third

Med undtagelse af flangekonstruktionen er den i fig. 1 og 2 viste, kendte bakke fremstillet principielt af et emne i lighed med det i fig. 7 viste.With the exception of the flange structure, the one shown in FIG. 1 and 2 are known in principle made of a blank similar to that of FIG. 7.

15 Bakken i fig. 1 har således et bundfelt 10', modstående langsgående vægfelter 11', modstående korte vægfelter 12' og udvendige sammenføjningsfelter 13', som er sammensat af to trekantede delfelter. Væggene 11' har udadbøjede, langsgående kantflanger 14', 20 og væggene 12' har kantflanger 15'.15 The tray of FIG. 1 thus has a bottom panel 10 ', opposite longitudinal wall panels 11', opposite short wall panels 12 'and external joint panels 13', which are composed of two triangular subfields. The walls 11 'have outwardly bent longitudinal edge flanges 14', 20 and the walls 12 'have edge flanges 15'.

Som det ses i fig. 1, er kantflangerne 15' placeret oven på flangerne 14' uden nogen direkte låsning mellem disse flanger i hjørneområderne af bakken. Kantflangerne 15' er kun forseglet mod de 25 nedenunder liggende flanger af sammenføjningsfelterne 13'. Dette er antydet med de punkterede linier 16' i fig. 1. Den flange på sammenføjningsfeltet 13', mod hvilken forseglingen 16' opnås, er den flange, som udgår fra det inderst liggende delfelt af sammen-30 føjningsfeltet 13' i fig. 2. Også det yderst liggende delfelt har en flange, men denne er ikke forseglet mod undersiden af flangen af det førstnævnte delfelt. Dette skyldes, at eh sådan forsegling ikke kan opnås på grund af bakkens indvendige aluminiumfolie 35 19'. Bakken består nemlig principielt af et mellemlig- 4 144003 gende kartonlag 20', det nævnte aluminiumfolielag 19' og et udvendigt lag 21' af polyeten eller et lignende termoplastisk lag, som kan forsegles.As seen in FIG. 1, the edge flanges 15 'are located on top of the flanges 14' without any direct locking between these flanges in the corner regions of the tray. The edge flanges 15 'are only sealed against the 25 flanges below the joints of the joining panels 13'. This is indicated by the dotted lines 16 'in FIG. 1. The flange of the joint field 13 'against which the seal 16' is obtained is the flange extending from the innermost subfield of the joint field 13 'of FIG. 2. The outermost subfield also has a flange, but this is not sealed to the underside of the flange of the former subfield. This is because such a seal cannot be obtained due to the inside aluminum foil 35 19 'of the tray. Namely, the tray consists of an intermediate cardboard layer 20 ', said aluminum foil layer 19' and an outer layer 21 'of polyethylene or a similar thermoplastic layer which can be sealed.

På grund af den manglende låsning mellem flan-5 gerne 14' og 15' i bakkens hjørneområder antager derfor hjørnekonstruktionen den i fig. 2 viste, bælg-agtige konstruktion, dvs. at der mellem delfelterne 17' og 18' optræder en ukontrollerbar luftspalte.Therefore, due to the lack of locking between flanges 5 '14' and 15 'in the corner areas of the tray, the corner construction assumes that in FIG. 2, bellows-like construction, i.e. that there is an uncontrollable air gap between the sub-fields 17 'and 18'.

Ved en let kraftpåvirkning i retning af pilen 22' 10 i fig. 2 kan denne luftspalte gøres større, hvilket medfører, at de forlængede yderender 23' og 24' af flangerne 14' og 15' føres fra hinanden, hvorved tætheden går tabt i det hjørne, som dannes af de forlængede dele.With a slight force effect in the direction of arrow 22 '10 in FIG. 2, this air gap may be enlarged, causing the elongated outer ends 23 'and 24' of the flanges 14 'and 15' to be separated, thereby losing the density in the corner formed by the elongated parts.

15 Nu har man imidlertid indset, at denne mangel på tilsyneladende enkel måde kan fjernes ved et arrangement af bakkens flanger, som fremgår af fig.15 However, it has now been realized that this lack of a seemingly simple way can be removed by an arrangement of the flanges of the tray shown in FIG.

3-7. I disse figurer er anvendt samme henvisningstal som i fig. 1 og 2, bortset fra at mærkerne er udeladt.3-7. In these figures, the same reference numerals as in FIG. 1 and 2, except that the marks are omitted.

20 Den i fig. 7 viste side af emnet er den kommen de inderside af bakken. Denne side af emnet er altså dækket af aluminiumfolien 19 (fig. 4), også på kantflangerne 14 og 15 samt på sammenføjningsdelfelterne 17 og 18 og disses flanger 25 og 26. Emnets forskel-25 lige felter er på kendt måde indbyrdes afgrænset fra hinanden gennem bukkelinier på den i fig. 7 viste måde. Ligeledes er sammenføjningsfelterne 13 opdelt i delfelter 17 og 18 og flangepartier ved hjælp af de i figuren viste bukkelinier. I fig. 7 har kun 30 bukkelinien mellem de korte vægfelter 12 og sammenføjningsfelterne 13 fået særlig henvisningsbetegnelse 27, eftersom dette letter forståelsen af fig. 5 og 6.The embodiment of FIG. 7 of the workpiece, it is the inside of the tray. This side of the blank is thus covered by the aluminum foil 19 (Fig. 4), also on the edge flanges 14 and 15 as well as on the joining sub-panels 17 and 18 and their flanges 25 and 26. The different fields of the blank are in a known manner mutually separated from each other through bending lines on the one shown in FIG. 7. Also, the joint panels 13 are divided into subfields 17 and 18 and flange portions by means of the bending lines shown in the figure. In FIG. 7, only the bending line between the short wall panels 12 and the joint panels 13 has been given special reference designation 27, since this facilitates the understanding of FIG. 5 and 6.

I analogi med hvad tilfældet er med den kendte 35 bakke i fig. 1 og 2, er kantflangerne 14 og 15 ved 5 144003 bakken ifølge fig. 3-7 forlænget med fremspringende partier 24 og 23. Til forskel fra bakken i fig. 1 og 2 er hensigten med partierne 24 og 23 imidlertid at låse bakkens hjørner mpd en bælgagtig forskyd-5 ning, som den, der er vist i fig. 2. Med dette formål er den forlængede del 23 af flaggen 25 ført ind under det forlængede parti 24 på flangen 14.By analogy with the known tray in FIG. 1 and 2, the edge flanges 14 and 15 are at the tray of FIG. 3-7 extended with projecting portions 24 and 23. Unlike the ground in FIG. 1 and 2, however, the purpose of the portions 24 and 23 is to lock the corners of the tray with a bellows displacement, such as that shown in FIG. 2. For this purpose, the elongated portion 23 of the flag 25 is inserted under the elongated portion 24 of the flange 14.

Til lettelse af denne placering af kantflangen 15 findes der i delsammenføjningsfeltet 17 * s flange 10 25 en udsparing 28. Ligeledes findes der i flangen 26 på delsammenføjningsfeltet 18 en indskæring 29. Denne udsparing 28 og indskæring 29 kan udføres på forskellig måde, f.eks. vises med punkterede linier 30 i fig. 7, hvorledes udsparingen 28 kan 15 erstattes af en slids, som strækker sig under forlængelsen 23. Det i denne sammenhæng væsentlige er, at det ved maskinel rejsning bliver muligt at nedpres-se flangen 15's forlængelse 23 under forlængelsen 24 af flangen 14.To facilitate this placement of the edge flange 15, the flange 10 25 of the sub-joint field 17 * has a recess 28. Similarly, in the flange 26 of the sub-joint field 18 there is a recess 29. This recess 28 and recess 29 can be made in different ways, e.g. . is shown by dashed lines 30 in FIG. 7, how the recess 28 can be replaced by a slot extending during the extension 23. In this connection it is essential that by mechanical erection it is possible to depress the extension 23 of the flange 15 during the extension 24 of the flange 14.

20 I fig. 5 vises altså et deltrin ved rejsning af bakken. Ved det viste hjørne bukkes sammenføjningsfel-tet med delfeltet 17 mod den korte væg 12 på den antydede måde. Efter at denne bukning er gennemført eller samtidig hermed, bukkes også flangerne 15 og 14 25 ud fra planet for deres respektive sider 12 og 11. Det fremspringende parti 23 af flangen 15 ligger således til at begynde med i samme plan som den korte væg 12 og bukkelinien 27. For at komme i stilling under den ombøjede kantflange 14's forlængede parti 24 30 må derfor partiet 23 først forskydes et stykke svarende til den sammenlagte tykkelse af sammenføjningsdelfelterne 17 og 18 og derefter forbi den yderste ende af det forlængede parti 24. Herved presses den korte væg 12 mod sammenføjningsfeltet 13, så at 35 den bælgvirkning, som forekommer i bakken i fig. 2,In FIG. 5 is thus shown as a sub-step when raising the tray. At the corner shown, the joining field with the subfield 17 is bent toward the short wall 12 in the indicated manner. After this bending is completed or at the same time, the flanges 15 and 14 25 are also bent out of the plane of their respective sides 12 and 11. Thus, the projecting portion 23 of the flange 15 lies initially with the same plane as the short wall 12 and Therefore, to get into position under the elongated portion 24 of the bent edge flange 14, the portion 23 must first be displaced a portion corresponding to the total thickness of the joint portions 17 and 18 and then past the outermost end of the elongated portion 24. short wall 12 toward the joint field 13 so that the bellows effect occurring in the tray of FIG. 2

Claims

144003 lapses. Instead, the subfields 17 and 18 are solved in the manner shown in FIG. 4. It should be noted, however, that in this case the sealing of the joint box 13 to the short wall 12 5 can be performed in analogy to that which was the case in FIG. 1, i.e. a seal 16 is performed between the polyethylene layer of the edge flange 15 and the joining flange 25. In the same way as with the tray of FIG. 1 and 2, it thereby becomes easy to unfold the end portions of the tray 10 simply by inserting a finger between the sub-field 17 and the short wall 12. Thus, the flanges 25 and 26 of the joining field form a restraint for the edge flange 15 and at the same time due to the shapes formed therein. recesses 15 or notches, the placement of the extension 23 below the extension 24 of the sidewall edge flange 14 effectively avoids the problems mentioned in the introduction with the known baking tray. The method of raising is in principle the same as that of the known tray, the only difference being that there must be fingers or similar means for pressing the portions 23 under the corresponding portions 24. However, this does not mean any major difficulties. As mentioned, the inner aluminum foil also extends over the edge flanges. However, the tray can nevertheless be closed with a flange sealed lid. Hereby, for example, the lid may be coated with foil material which enables sealing against aluminum foil. It will be appreciated, however, that the corner structure of the invention may also be adapted to trays without internal aluminum foil.

A packaging tray with easily unfoldable sides, preferably intended for direct insertion with contents into a furnace and comprising a bottom panel (10), side walls (11, 12) extending from the bottom panel and having outwardly directed edge flanges ( 14, 15), which sidewalls are held in position by means of 5 foldable joining panels (13), spm are connected to the adjacent sidewalls (11, 12) by fold lines, and which abut the outer sides of one set of sidewalls (12) and further, at the upper edges, have outwardly directed flanges (25, 26), characterized in that each pair of the edge flanges (14, 15) of the side walls of the tray has elongated portions (24, 23) that the elongated portion (23) of the edge flange (15) of the wall (12) against which the joining field abuts is inserted under the elongated portion (24) 15 of the edge flange (14) of the second adjacent side wall (11) so that the joining fields are dimensioned such that they hereby compressed and their part elts are locked against reciprocal displacement, and the flanges (25, 26) of the joining fields are furthermore designed so as to stop the first mentioned flange (15) and lock its elongated part below the elongated parts (24) of the second edge flange. .

Tray according to claim 1, wherein the joining fields consist of two triangular fields, each with its own flange (25, 26), characterized in that there are cut-outs or recesses (28-30) in the parts of said flanges which lie below the elongated portions (23) of the first mentioned edge flanges (15).

Tray according to claim 2, wherein the side of the web forming the inside of the tray is laminated over the entire surface with aluminum foil or a similar material, characterized in that each joining field (13) is sealed to the respective side wall ( 12) by sealing the flange side (25) of the joint.