DE2345203A1 - CONTAINER CUT - Google Patents

Description

DR.-ING. EUGEN MAIER PATENT ADVOCATE

DRESDNER BANK AQ TELEPHONE: (O711) 3 * 2761/2 STUTTGART NO. 192O534

: mentor 7 STUTTGART 1, PISCHEKSTR. 19 STGT postal check. 05200-709

A 11 556

5th September 1973

f - dm

Sprinter Pack AB Laholmsvägen 86, S 302 49 Halmstad, Sweden

Container cut

The invention relates to a container blank made of foldable material such as cardboard, aluminum foil or the like, with fields separated by fold lines for a base, two opposite end flaps having String walls and two opposite end faces with downwardly folded hand strips, which when the cut is erected over the inwardly folded end

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see lying and ¹ hold on to them.

In the case of container blanks of this type, it is known that Entlasohen and the marginal strips by additional means » for example, by means of an adhesive or in the slots in the front wall.

The invention is based on the object of providing a blank which can be erected to form a container can, in which the end flaps and the hand strips without the aid of an adhesive more often other additional Medium and without. Slots in any part of the container.

According to the invention, this object is achieved in that the fold line between the bottom and one end wall is curved so that the upright end faces wall and the downwardly folded edge strip one the hand strip and thus also the endlasohen in their position have firm Krtinaung. The invention is thus based on the knowledge that by folding over the edge strip " fena against a flat face wall around an essentially straight gap line no support effect is achieved,

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while by a curvature of the forehead wall and the downwardly folded Bandstreifθιβ is prevented that the hand strip from the front wall to the outside " stands.

Such a cut can be provided with known liquid-resistant surface layers, consisting of a ^{thermoplastic material which is temperature-resistant up to over 200 0} C, in order to be used for those vessels or containers that are listed on ready-made meals or such that are to be warmed Baeiksischungen are intended, which are baked after adding a liquid to cakes or bread. They made from the blanks according to the invention can also be used with advantage for ice cream and other frozen foods. It is also possible to use the blanks made of cardboard or aluminum foil or the like for household purposes, since they can be erected very easily into vessels that are particularly suitable for holding food that has to be heated in the oven. After use, the relatively cheap container can be thrown away and washing up can be avoided »

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A major advantage of the container according to the invention especially with regard to frozen foods and its use as a baking sheet is that it can be easily opened by simply unfolding the edge strips and splitting them downwards the front and side walls can be opened, thus ensuring easy removal of the frozen food, such as ice cream or baked goods.

The drawing shows some exemplary embodiments of the Finding represented in sohematic catfish. Show it

71g. 1 shows an exemplary embodiment of a blank for producing a container with closed corners;

Pig. 2, 5 and 4 during the cutting in some phases

of erecting in a diagrammatic representation;

Pig. 5 a front end of the erected container seen from the inside;

Pig. 6 shows the erected container in a diagrammatic representation; _409813/0387

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7 shows a detail from a blank with freely protruding band tabs;

FIG. 8 shows a front end of one from the one shown in FIG. showed the cut of the erected container with the end flaps and the hand strips after show outside;

9 shows the front end of a container erected from the blank shown in FIG end flaps and hand strips pointing to the inside of the box.

The blank shown in Fig. 1 and the corresponding container according to FIGS. 2 to 6 consists of one iodine 10, two Side walls 12, 14 and two end side walls 16, 18 · The side walls have end flaps 20, which are shown in FIG This example is formed by corner fields located between the ends of the end walls 16, 18 and the side walls 12, 14 are and folded along the end fold lines 22, 24 and the diagonal fold lines 26 in a manner known per se know how to do it.

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The front side walls 16, 18 have at their upper edges Hand strips 28 on which are along rectilinear ode: · substantially geraldinier, q.uer running fold lines 30 can be folded. The end wall 16 can be folded relative to the base 10 about an arcuate fold line 32. The side walls have edge flanges 34, on the side edges of which there are locking tabs 35.

When the end wall 16 is erected, it is forced into a curved position due to the arcuate design of the fold line 32, as shown in Pig. 2 and 3 is shown, In this position, the end flaps 20 are folded inwardly against the outside of the end wall 16. Afterward the edge strip 28 is folded down over the end flaps 20, as in Pig. 4 is shown.

After the edge strip 28 has been folded over, the sides become side walls 16, 18 and the downwardly folded edge strips 28 in the in Pig. 5 and 6 held curved position shown. The fold lines 30 between the edge strips 28 and the end walls 16, 18 are in reality normal not as strongly curved as the fold lines 32 between the

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End walls 16, 18 and the bottom 10 »However, can can be achieved by a corresponding curvature of the fold line 32 that the fold lines 30 of the hand strips 28 Dei erected container are sufficiently curved that the edge strips are securely held in their folded-down position.

The one in Pig. The container shown in FIG. 6 is liquid-tight Corners. Sr can easily be opened by unfolding the edge strips. Provided that the cut is made by supplying heat carries fusible coating, an additional fastening effect can be achieved by welding. In the however, this will not be necessary for most use cases.

The Pig. 7 shows a cut corresponding to the cut in Pig. 1 with the difference that the end flaps 36, which can be folded at the palt line 38, are free protrude from the ends of the side walls 12, 14 and that the side walls do not have belt flanges. When straightening up of this blank, the end flaps 36 can optionally be folded against the outside of the end wall (Fig. 8), whereby the container receives a smooth inner wall,

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or they can be folded against the inside of the end wall (Fig. 9), which is accordingly a smooth Outside of the container results. In the first case the edge strips 28 are correspondingly folded against the outside of the end walls and in the second case against the inside « page. In both cases one obtains a definition of hand strips 28 in their downwardly folded position due to the arcuate fold lines 32.

In the blanks shown in FIGS. 1 and 7, the fold lines 32 are each curved in the direction of the fold lines 30. However, the same fastening effect can also be used folding lines 32 curved in opposite directions can be achieved.

An important advantage of the blank described is that even with a relatively small material thickness and a minimal material stiffness an anchoring effect at the corners which is satisfactory for many applications is achieved.

In the examples shown, the walls of the container form essentially at right angles with the ground. These

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however, they can also be inclined outwards in such a way that the containers can be stacked on top of one another.

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Claims (1)

A 11 556 - 10 - 5.9.1973 f - dm Expectations J Container blank made of foldable material such as cardboard, aluminum » miniUffl film or the like with separated by guidelines suffer for a floor, two opposite side walls with Jändlaachen and sswei each other. Opposite, front side walls with downwardly folded edge strips, which are over when the cut is erected the inwardly folded band flaps and hold them tight, characterized in that the fold line (32) between the bottom (10) and an end wall (16, 16) extends in an arc shape, so that the upright end wall and the downwardly folded edge strip (28) form the edge strip have curvature that holds it in place. 2. Blank according to claim 1, characterized in that the split line (32) between the bottom (10) and an end wall (16, 18) 409813/0387 - 11 - A 11 556 - 11 - 5.9.1973 f - dm in the direction of the fold line (30) between the hitting end wall and the associated hand strip (28) is curved. 3. Blank according to claim 1 or 2, characterized in that the fold line (30) runs essentially in a straight line between an end wall (16, 18) and the associated hand strip (28). 4- · blank according to one of claims 1 to 5 »characterized in that the End faces (20) of the side walls (12, 14) foldable in a manner known per se with the lateral edge of the adjacent end wall (16, 18) to form each of a corner field are connected, which has a substantially diagonally extending? old line (26). which can be folded up to form a double fold when the end flap is folded in against the end wall is. 5. Blank according to claim 4 »characterized in that the side walls (12, 14) Have edge flanges (34) which at their ends to the 409813/0387 - 12 - A 11 556 - 12 - 5.9.1973 f ~ dm End flanges (20) hinged locking tabs (35) wear, which can be folded over against the end flaps and can be fixed in this position by the relevant edge strip are so that the edge flanges in their outwardly folded Position to be determined with the formation of stiffening elements. 6. Blank according to one of claims 1 to 3 »da» characterized in that the end tabs (36) exclusively in a manner known to calibration are each connected to the rest of the blank along the folding edge (38) between the side wall (12, U) and the end flap (36). 7. Containers made of foldable material such as cardboard, aluminum foil Or the like. Consisting of a base, two opposing end tabs having side walls and two opposing edge strips having end walls, the container parts being folded relative to one another at fold lines and the end tabs rest against one side of the adjacent end wall and the edge strips down over the end flaps are folded, thereby g e ~ 409813/0387 - 13 - A 11 556 - 13 - 5.9.1973 £ - there indicates that the split lines (32) between the bottom (10) and the end walls (16, 18) extend in an arc shape and the end walls with the tape strips (28) have the edge strips in their have a firm curvature near the folded layer. 409813/0387