DK144789B

DK144789B - AEGBAKKE

Info

Publication number: DK144789B
Application number: DK224179AA
Authority: DK
Inventors: J P Stevens
Original assignee: Ono
Priority date: 1978-05-31
Filing date: 1979-05-30
Publication date: 1982-06-07
Also published as: FI68589C; ES244000Y; IE48668B1; AU526629B2; NZ190607A; DK144789C; BR7903387A; ES244000U; IE790981L; FI791734A; DK224179A; DE2960812D1; AU4751079A; AR223974A1; FI68589B

Description

1 1447891 144789

Opfindelsen angår en ægbakke af den i krav l's indledning angivne art.The invention relates to an egg tray of the type specified in the preamble of claim 1.

Fra beskrivelsen til fransk patent nr. 2.098.626 kendes en bakke af denne type, hvor de nedad åbne side-fremspring danner 5 en kanal, som er forsynet med indhægtningspartier, hvormed en sideflange på låget kan fasthægtes, medens den anden flange klæber til ydervæggen i en anden opad åben kanal, som er udformet på den anden længdekant af underdelens grundflade.From the description of French Patent No. 2,098,626 a tray of this type is known, in which the downwardly open side projections form a channel which is provided with attachment portions, with which a side flange on the lid can be attached, while the other flange adheres to the outer wall. in a second upwardly open channel formed on the second longitudinal edge of the base of the lower part.

Det er formålet med opfindelsen at anvise en ægbakke af den 10 omhandlede art, og som er stivere og derved kartonbesparende.It is the object of the invention to provide an egg tray of the type according to the invention, which is stiffer and thereby cardboard-saving.

For at tilgodese dette formål er den indledningsvis omtalte ægbakke ifølge opfindelsen ejendommelig ved det i den kendetegnende del af krav 1 anførte.In order to achieve this object, the egg tray according to the invention initially mentioned is characterized by what is stated in the characterizing part of claim 1.

Ved et sådant arrangement kan understøttende værktøjer ind-15 sættes i de nedad åbne sidefremspring af underdelen, således at begge sideflanger af låget samtidigt kraftigt kan presses imod disse fremspring og således klæbes fast til disse, uden at der sker nogen beskadigelse af æggene. Ægbakkens lukning kan gennemføres meget hurtigt og automatisk. Ved at sideflangerne 20 af låget er klæbet til de opragende sidefremspring af underdelen opnår man endvidere, at de to dele af ægbakken effektivt afstiver hinanden.In such an arrangement, supporting tools can be inserted into the downwardly open side projections of the lower part, so that both side flanges of the lid can at the same time be strongly pressed against these projections and thus adhered to them without any damage to the eggs. Closing the egg tray can be done very quickly and automatically. Furthermore, by the side flanges 20 of the lid being glued to the projecting side projections of the lower part, it is obtained that the two parts of the egg tray effectively stiffen each other.

Ved hjælp af de i den kendetegnende del af krav 2 og/eller 3 anførte kendetegn forøges ægbakkens stivhed yderligere.By means of the features stated in the characterizing part of claim 2 and / or 3, the stiffness of the egg tray is further increased.

25 Andre karakteristiske træk og fordele ved opfindelsen vil fremgå af den efterfølgende beskrivelse i forbindelse med tegningen , hvor fig. 1 viser et planbillede af en udførelsesform for ægbakken ifølge opfindelsen med en del af låget fjernet, 30 fig. 2 et delbillede af ægbakken set fra den ene ende og i større målestok, 144789 2 fig. 3 et planbillede af en kartonstrimmel til fremstilling af låget på ægbakken i fig. 1 og 2 og fig. 4 et billede svarende til fig. 3, men i mindre målestok, af en kartonstrimmel til fremstilling af låget til en anden 5 udførelsesform for ægbakken ifølge opfindelsen.Other features and advantages of the invention will become apparent from the following description taken in conjunction with the accompanying drawings, in which: FIG. 1 shows a plan view of an embodiment of the egg tray according to the invention with a part of the lid removed, fig. 2 is a partial view of the egg tray seen from one end and on a larger scale, FIG. 3 is a plan view of a cardboard strip for making the lid on the egg tray in fig. 1 and 2 and fig. 4 is a view corresponding to FIG. 3, but on a smaller scale, of a cardboard strip for making the lid for another embodiment of the egg tray according to the invention.

Den i fig. 1 og 2 viste ægbakke består af to dele, nemlig af en termoformet underdel 1 af transparent eller gennemskinneligt plastmateriale og et låg 2 af karton.The device shown in FIG. 1 and 2 consists of two parts, namely of a thermoformed lower part 1 of transparent or translucent plastic material and a lid 2 of cardboard.

Underdelen 1, der f.eks. består af PVC eller chokbestandigt 10 polystyren, indbefatter en rektangulær plan grundflade 3, som forbinder seks lommer 4 ved deres største ende, idet hver lomme i hovedsagen har form som en pyramidestub med regulær orthogonal grundflade. Hver lomme er forbundet med grundfladen 3 over en kort lodret væg 5, som strækker sig opad, og som på 15 hver side har et indadrettet fremspring i form af en lille kuglefladeformet hvælving 6 til at støtte et æg, som indsættes i lommen. Bunden 7 af hver lomme er indad buet i form af en kugleformet hvælving med en plan kantzone 8.The lower part 1, which e.g. consists of PVC or shock-resistant polystyrene, includes a rectangular flat base 3 which connects six pockets 4 at their largest end, each pocket having substantially the shape of a pyramidal stump with regular orthogonal base. Each pocket is connected to the base 3 over a short vertical wall 5, which extends upwards and which on each side has an inwardly projecting protrusion in the form of a small spherical vault 6 to support an egg which is inserted into the pocket. The bottom 7 of each pocket is inwardly curved in the form of a spherical vault with a flat edge zone 8.

Lommerne er anbragt symmetrisk i forhold til et symmetriplan 20 Pi bakken, idet de er anbragt i to rækker med tre lommer i hver. Dette plan P er også symmetriplan for et antal opragende dele, nemlig to endefremspring 9, to midterfremspring 10 og otte sidefremspring 12.The pockets are arranged symmetrically with respect to a plane of symmetry 20 Pi in the tray, being arranged in two rows with three pockets in each. This plane P is also the plane of symmetry of a number of protruding parts, namely two end projections 9, two center projections 10 and eight side projections 12.

Fremspringene 9 og 10 har form som opad konvergerende rette pyra-25 midefremspring og en højde, som stort set svarer til højden af lommen 4. Fremspringet 9 er i hovedsagen triangulært i horisontalt tværsnit, og fremspringene 10 har et kvadratisk vandret tværsnit. Set i planet er den største grundflade af fremspringene 9 dannet af en kant af grundfladen 3 og af en side af hver 30 af de to endelommer, og grundfladen af fremspringene 10 dannes af én side af hver af de fire nærmeste lommer. De små grundflader 13 og 14 af fremspringene 9 og 10 er plane og ligger i et fælles horisontalt plan Q.The projections 9 and 10 have the shape of upwardly converging straight pyramidal projections and a height which substantially corresponds to the height of the pocket 4. The projection 9 is substantially triangular in horizontal cross-section and the projections 10 have a square horizontal cross-section. Seen in the plane, the largest base of the projections 9 is formed by an edge of the base 3 and by one side of each 30 of the two end pockets, and the base of the projections 10 is formed by one side of each of the four nearest pockets. The small base surfaces 13 and 14 of the projections 9 and 10 are planar and lie in a common horizontal plane Q.

144789 3144789 3

Sidefremspringene 12 er anbragt på linie med fremspringene 9 og 10 og har form som pyramider med en trekantet grundflade. Grundfladen af de yderste sidefremspring 12 dannes af to sider af grundfladen 3 og har en side af en endelomme 4 og er derfor en 5 retvinklet trekant. Grundfladen af de mellemste sidefremspring 12 er en ligebenet trekant, som dannes af en langsgående kant af grundfladen 3 og af en side af en endelomme 4 og af en midterste lomme 4. Toppene af sidefremspringene 12 er alle anbragt i et lavere niveau end planet Q, og deres ydre sideflader 10 15, som strækker sig fra længdekanterne af grundfladen 3, dan ner to skråplaner P1 (fig. 2), og deres skæringslinie er vandret og ligger i planet P.The side projections 12 are arranged in line with the projections 9 and 10 and have the shape of pyramids with a triangular base. The base of the outermost side projections 12 is formed by two sides of the base 3 and has one side of an end pocket 4 and is therefore a right-angled triangle. The base of the middle side projections 12 is an isosceles triangle formed by a longitudinal edge of the base 3 and by a side of an end pocket 4 and of a middle pocket 4. The tops of the side projections 12 are all arranged at a lower level than the plane Q, and their outer side faces 10 15, which extend from the longitudinal edges of the base surface 3, form two inclined planes P1 (Fig. 2), and their line of intersection is horizontal and lies in the plane P.

Ydersiderne 16 af fremspringene 9 og 12 strækker sig på samme måde fra breddekanterne af grundfladen 3 i to skrå planer, hvis 15 skæringslinie er horisontal og vinkelret på planet P.The outer sides 16 of the projections 9 and 12 extend in the same way from the width edges of the base 3 in two inclined planes, the line of intersection of which is horizontal and perpendicular to the plane P.

Idet underdelen 1 er fremstillet ved termoformning i en enkelt arbejdsoperation ud fra en plan plastmaterialebane, ses det, at de storste grundflader af fremspringene 9 og 10 og grundfladen af sidefremspringene 12 ikke danner nogen fysisk udformet flade 20 (er imaginære flader) i modsætning til de mindste grundflader 13 og 14 af fremspringene 9 og 10. Med andre ord er der adgang fra bunden op til toppen i alle fremspringene 9, 10 og 12.As the lower part 1 is manufactured by thermoforming in a single working operation from a planar plastic material web, it is seen that the largest base surfaces of the projections 9 and 10 and the base surface of the side projections 12 do not form any physically formed surface 20 (are imaginary surfaces). smallest base surfaces 13 and 14 of the projections 9 and 10. In other words, there is access from the bottom up to the top in all the projections 9, 10 and 12.

De to midterste fremspring 10 har hver ved deres top en lille a cylindrisk tap 10 , som strækker sig opad.The two middle projections 10 each have at their top a small a cylindrical pin 10 which extends upwards.

25 I de syv smalle zoner 17 mellem lommerne 4 findes små cylin-driske partier 17 , som har vertikale akser og tjener til at holde en given afstand mellem grundoverfladerne 3, når underdelene 1 er stablede oven på hinanden uden låg.In the seven narrow zones 17 between the pockets 4 there are small cylindrical portions 17 which have vertical axes and serve to maintain a given distance between the base surfaces 3 when the lower parts 1 are stacked on top of each other without lids.

Låget 2 dannes af en rektangulært lågflade 18, som er udskåret 30 mellem to efter hinanden følgende tværgående linier 40, som danner svækningslinier eller perforerede afrivningslinier i en flad kartonstrimmel 9 (fig. 3). Med "svækningslinie" menes en linie, langs hvilken materialer er behandlet, således at det let kan overrives med hånden, f.eks. ved at der findes en række små 4 U67S9 huller langs linien. Den rektangulære lågflade har to langsgående foldelinier 41, der i hovedsagen er anbragt halvvejs mellem længdekanterne 42 og den langsgående midterakse X-X og to langsgående foldelinier 41a i nærheden af kanterne 42.The lid 2 is formed by a rectangular lid surface 18, which is cut 30 between two successive transverse lines 40, which form lines of weakness or perforated tear lines in a flat cardboard strip 9 (Fig. 3). By "line of weakness" is meant a line along which materials are treated so that it can be easily torn by hand, e.g. by the fact that there are a number of small 4 U67S9 holes along the line. The rectangular lid surface has two longitudinal fold lines 41 which are arranged substantially halfway between the longitudinal edges 42 and the longitudinal central axis X-X and two longitudinal fold lines 41a in the vicinity of the edges 42.

5 Foldelinierne 41 ender et kort stykke fra svækningslinierne 40 og fortsætter i let divergerende snit 43. Enderne af foldelinierne 41 er indbyrdes forbundne med to tværgående foldelinier 44 og er forbundet med de respektive hjørner af den rektangulære lågflade 18 med andre foldelinier 45. De to snit 43 10 danner sammen med linierne 40 og 41 en midterflig 46 med tra-pezform, medens linierne 40,45 og 43 danner to sideflige 47.The fold lines 41 end a short distance from the lines of weakness 40 and continue in slightly diverging sections 43. The ends of the fold lines 41 are interconnected by two transverse fold lines 44 and are connected to the respective corners of the rectangular lid surface 18 by other fold lines 45. The two sections 43 10 together with the lines 40 and 41 form a middle tab 46 with a trapezoidal shape, while the lines 40, 45 and 43 form two side tabs 47.

Sideflangerne 35 på låget 2 begrænses af linierne 41, 42 og 45 og har trapezform.The side flanges 35 on the lid 2 are bounded by the lines 41, 42 and 45 and have a trapezoidal shape.

En af lågets flanger 35 har et langsgående oprivningsbånd 48, 15 som strækker sig mellem de to tilsvarende foldelinier 45 i hovedsagen midt mellem de tilhørende linier 41 og 41a. Opriv-ningsbåndet 48 dannes af to i hovedsagen parallelle og symmetriske rækker af vinkelbøjede slidser 49, som hver har et parti 51, der er parallelt med aksen X-X, og et i oprivningsret-20 ningen lidt divergerende parti 50. I nærheden af den ene ende af oprivningsbåndet 48 findes et holdeorgan 52, som er dannet af et ankerformet snit 53, således at der er dannet to tunger 54. Slidserne 49 strækker sig i begge retninger fra holdeorganet 52 som vist ved pile.One of the flanges 35 of the lid has a longitudinal tear band 48, 15 which extends between the two corresponding fold lines 45 substantially midway between the associated lines 41 and 41a. The tear strip 48 is formed by two substantially parallel and symmetrical rows of angled slits 49, each having a portion 51 parallel to the axis XX and a slightly diverging portion 50 in the tear direction. Near one end of the tear-off band 48 there is a holding means 52 which is formed by an anchor-shaped section 53 so that two tongues 54 are formed. The slots 49 extend in both directions from the holding means 52 as shown by arrows.

25 Lågets 2 anden flange 35 har over hele sin længde og stort set i samme afstand fra kanten 42 som oprivningsbåndet 48 en foldelinie 55, der er parallel med aksen X-X. Foldelinien 55 er fra hver foldelinie 45 og hen til den nærmeste svækningslinie 40 forlænget i et snit 56, som også er parallelt med aksen X-X.The second flange 35 of the lid 2 has over its entire length and at substantially the same distance from the edge 42 as the tear-off band 48 a folding line 55 which is parallel to the axis X-X. The fold line 55 is extended from each fold line 45 to the nearest line of weakness 40 in a section 56 which is also parallel to the axis X-X.

30 På aksen X-X i tredjedelspunkterne af den midterste lågdel mellem foldelinierne 41 og 44 findes huller 57. Disse huller har form som ligesidede trekanter, hvis indskrevne cirkel har en diameter, der er lidt mindre end diameteren af de fremsprin-gende tappe 10 på beholderen 1.On the axis XX at the third points of the middle lid part between the fold lines 41 and 44 there are holes 57. These holes are shaped like equilateral triangles, the inscribed circle having a diameter slightly smaller than the diameter of the protruding pins 10 on the container 1 .

144789 5 Når underdelen 1 skal forsynes med låget 2, placeres den rektangulære lågflade 18 på den på en sådan måde, at de fremspringende tappe 10a går gennem hullerne 57, idet der påføres en lille kraft på låget. De to flanger 35 foldes så over og klæbes 5 til sidefremspringene 12 i de områder af disse, som ligger under strimmelen 48 henholdsvis linien 55. Til denne klæbning indføres understøtninger af passende form i fremspringene 9, 10 og 12. Dette bringer holdeorganerne 52 hen i nærheden af et af endesidefremspringene 12, men kun på den ene side af dette.When the lower part 1 is to be provided with the lid 2, the rectangular lid surface 18 is placed on it in such a way that the projecting pins 10a pass through the holes 57, a small force being applied to the lid. The two flanges 35 are then folded over and glued 5 to the side projections 12 in the areas thereof which lie below the strip 48 and line 55, respectively. For this gluing, supports of suitable shape are introduced into the projections 9, 10 and 12. This brings the holding means 52 into near one of the end side projections 12, but only on one side thereof.

10 Desuden foldes fligen 46 ved hver ende mod ydersiden af det nærmeste fremspring 9, og fligene 47 foldes om, således at deres øverste ender dækker sidekanterne af midterfligen 46. Disse ender klæbes til hinanden. Det vil forstås, at de områder af den rektangulære lågflade 18, som er beregnet til klæbning, 15 i forvejen kan forsynes med termosvejselig lak eller med en vilkårlig type klæbemiddel, f.eks. et klæbemiddel, som klæber i kold tilstand blot ved at udsættes for et tryk. De fri kantpartier af flangerne 35 foldes til sidst indad omkring foldelinierne 41a, som ligger i plan med grundfladen 3. Alle disse 20 arbejdsoperationer udføres automatisk ved hjælp af konventionelle maskiner.In addition, the tab 46 is folded at each end toward the outside of the nearest protrusion 9, and the tabs 47 are folded so that their upper ends cover the side edges of the center tab 46. These ends are glued together. It will be appreciated that the areas of the rectangular lid surface 18 which are intended for gluing 15 may already be provided with thermo-weldable lacquer or with any type of adhesive, e.g. an adhesive which adheres in the cold state simply by being subjected to a pressure. The free edge portions of the flanges 35 are finally folded inwards around the folding lines 41a, which are flush with the base 3. All these work operations are performed automatically by means of conventional machines.

Når en på denne måde opbygget ægbakke skal åbnes, skubbes en tunge 54 lidt nedad med en fingernegl, således at man kan gribe den anden tunge 54 og udøve et træk på den tilsvarende side, 25 således at en del af oprivningsstrimmelen 48 aftrækkes, hvorefter samme procedure benyttes ved den anden side ved at fatte om den anden tunge 54. Man kan nu nedefra gribe den resterende øvre del af den således udskårne flange 35, og ved at tvinge den opad åbnes låget om foldelinien 55 på den anden side af 30 bakken, idet tappene 10 føres ud af åbningerne 57.When an egg tray constructed in this way is to be opened, a tongue 54 is pushed slightly downwards with a fingernail, so that one can grip the other tongue 54 and exert a pull on the corresponding side, so that a part of the tear strip 48 is peeled off, after which the same procedure is used on the other side by grasping the second tongue 54. The remaining upper part of the thus cut flange 35 can now be gripped from below, and by forcing it upwards the lid is opened around the fold line 55 on the other side of the tray, the pins 10 being led out of the openings 57.

For at undgå afrivning af de nederste dele af sidefligene 47 ved bakkens åbne side (hvilket ikke er nogen stor ulempe) kan slidserne 49 være forlænget op i den rektangulære lågflade 18 til linierne 40.To avoid tearing off the lower portions of the side flaps 47 at the open side of the tray (which is not a major drawback), the slits 49 may be extended up into the rectangular lid surface 18 to the lines 40.

6 U47896 U4789

Dersom færre end seks æg er udtaget fra ægbakken, kan låget lukkes igen og holdes i lukket stilling med en vis stivhed ved, at tappene 10a atter føres ind i hullerne 57.If less than six eggs have been removed from the egg tray, the lid can be closed again and kept in the closed position with a certain rigidity by inserting the pins 10a back into the holes 57.

Det vil forstås, at oprivningsstrimmelen 48 kan modificeres på 5 forskellige måder. Således kan en ståltråd være indlejret i kartonen, eller der kan anvendes en smal strimmel af et stærkt materiale, som er i stand til at opskære kartonen, når der udøves et træk i enden af strimmelen, der f.eks. kan være en strimmel af den art, der i handelen er kendt under varemærket 10 "TIRECEL"..It will be appreciated that the tear strip 48 may be modified in 5 different ways. Thus, a steel wire may be embedded in the carton, or a narrow strip of a strong material capable of cutting the carton may be used when a pull is applied to the end of the strip, e.g. may be a strip of the kind known in the trade under the trade mark 10 "TIRECEL".

En ægbakke, der er konstrueret på den beskrevne måde, er meget stiv, og dens låg 2 har ingen tendens til at blive adskilt fra underdelen 1. Låget kan desuden fremstilles af tyndt og billigt karton.An egg tray constructed in the manner described is very rigid and its lid 2 has no tendency to be separated from the lower part 1. The lid can also be made of thin and cheap cardboard.

15 Et trykt forråd af materiale til låg i form af en kartonstrimmel optager kun lidt plads, og det samme gælder forrådet af materiale til underdelen 1. Da der ikke findes karton ved de korte endesider af bakken, fås en god ventilering af æggene, som yderligere fremmes ved formen af lommerne, som kun understøtter æggene 20 punktvis.A printed supply of material for lids in the form of a cardboard strip takes up only a little space, and the same applies to the supply of material for the lower part 1. As there is no cardboard at the short end sides of the tray, good ventilation of the eggs is obtained, which further promoted by the shape of the pockets, which only support the eggs 20 pointwise.

I udførelsesformen vist i fig. 4 har den rektangulære lågflade 18° også foldelinierne 41, 41 , 43 og 45 som foran beskrevet, men linierne 43 konvergerer mod symmetriaksen X-X. Hullerne 57 er udeladt, og det samme gælder tappene 10a i underdelen 1.In the embodiment shown in fig. 4, the rectangular lid surface 18 ° also has the fold lines 41, 41, 43 and 45 as described above, but the lines 43 converge towards the axis of symmetry X-X. The holes 57 are omitted and the same applies to the pins 10a in the lower part 1.

25 Sammesteds findes i længderetningen to svækningslinier 58, som står vinkelret på aksen X-X. Disse linier strækker sig ud forbi linierne 41 og omtrent ud til en tredjedel af afstanden mellem disse linier 41 og kanterne 42. Fra hver ende af hver linie 58 udgår to svækningslinier 59, som hælder lidt udad i 30 forhold til aksen X-X. På denne måde danner alle linierne 59 på hver side af aksen XX en svækket, brudt linie 60, som strækker sig fra den ene linie 40 til den anden linie 40 og har tre bøjninger, nemlig en ved sit skæringspunkt med hver linie 58 og en mellem de to linier 58.At the same place there are in the longitudinal direction two lines of weakness 58, which are perpendicular to the axis X-X. These lines extend beyond the lines 41 and approximately up to one third of the distance between these lines 41 and the edges 42. From each end of each line 58 emerge two lines of weakness 59 which slope slightly outwards in relation to the axis X-X. In this way, all the lines 59 on each side of the axis XX form a weakened, broken line 60, which extends from one line 40 to the other line 40 and has three bends, namely one at its point of intersection with each line 58 and one between the two lines 58.

Claims

144789 Apart from the attachment of the pins 10a, the rectangular lid surface 18 is placed on the container 1 in the same manner as previously described in connection with fig. 1-3, and the gluing of the flanges 35 ° is performed on the side projections 12 below the line 60. The two outermost eggs are accessed by tearing off the portions of the two lines 60 which lie between the corresponding end of the lid and the first line. 58. Then, in a similar manner, the subsequent two eggs are accessed by tearing the following part of the lid, etc. In a modified embodiment, a line of weakness can be found along the axis X-X, so that, if desired, one single egg can be covered at a time. Patent claims. An egg tray of the kind consisting of a lower part of plastic material, e.g. transparent material, and is formed with a substantially rectangular base, to which are connected at least two downwardly projecting longitudinal rows of upwardly open, frustoconical pockets, between which there are a number of downwardly open, projecting projections, and where between the outer portions of the pockets are located downwardly open upwardly projecting side projections formed at a longitudinal edge of the base surface, and a lid of flat cardboard, the middle part of which is supported by the projections and is connected to two downwardly sloping side flanges, the free ends of which are attached to side portions of the lower part base surface, at least one of the flanges being fixed by gluing, characterized in that: the base surface (3) also has downwardly open side projections (12) at its second longitudinal edge; that the side projections (12) each have a flat outer side surface (15); and that the inner sides of each of the side flanges (35) of the lid are adhered to the outer side surfaces of all the side projections (12) located on the same side. 30

Egg tray according to claim 1, characterized in that the middle part of the lid (2) in the area of at least some