DK146278B - PLASTIC CONTAINER WITH LOW - Google Patents

Description

146278 in o

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a plastic container made by blowing and in the form of a barrel with a lid, with an inwardly facing lid bottom, which barrel, spaced apart from the barrel or barrel casing, has a flange formed directly on the wall or barrel against which an outwardly deflected outer edge flange of the lid attached to the barrel neck opening abuts and is held while the rim of the cap abuts against the edge of the neck opening, so that a sealing ring inserted between the lid inner and outer edges is pressed against the upper edge of the barrel neck opening by a clamp which grips the barrel fLangering and the outer flange of the lid.

Such barrels can be palletised in full condition and stacked on top of one another in columns, without the risk of deformations and leaks in the barrel-lid connection. The seal between the lid and the container can also not be crushed or displaced from its seat by an externally growing axial load, as the lid's insertion movement in the barrel is stopped by its flange, which faces the outer edge flange of the lid. The tensioning ring, which holds the lid on the barrel flange, prevents the lid from being lifted from its sealing position by increasing internal pressure in the barrel.

However, if such barrels are to be stored lying or stacked on top of each other in several layers, then leaks occur in the closure at the lid, deforming even with the massive flanging of the casing and the subsequent necking of the barrel by partially occurring radial loading thereby withdrawing from its tightly closed position at the barrel lid.

30 However, in certain types of barrel contents, a horizontal storage of the barrel is a prerequisite for maintaining the contents unchanged. Fish are stored for example. along with brine in shipping containers. The wooden barrels must be stored horizontally in order for the fish to be permanently flushed with brine. For this purpose, each barrel must be rotated about its longitudinal axis at specified time intervals.

For horizontal and stacked barrels, two 5 planks are inserted between each barrel layer in each barrel row, which cross the barrel longitudinal axis in the areas at the top and bottom of the barrel. In order to rotate the barrels in order to flush the fish with brine, the layers of barrels are repackaged from top to bottom, and after turning the barrels about their axis to another position, the layers are stacked again.

10 Since metal barrels cannot be used for storage and shipment of fish, wooden barrels are used as they can withstand the partial radial pressures of landscape storage and stacking and because they do not attack the contents. The manufacture of such wooden barrels is expensive, and the same applies to the preparation for filling, the barrels having to be soaked in advance for reasons of density. Furthermore, it is a disadvantage that they can only be used as a one-way fustage. Furthermore, the risk of fracture by crashing filled wooden barrels from the stacked dressing or by violence-like treatment is particularly high.

The object of the invention is to design plastic barrels of the kind described above so that they can be stored lying down without risk of leakage as a result of the partially acting pressure on the barrel casing.

25 It is also desirable that it should be possible to stack the filled barrels in several layers on top of one another even at high specific surface loads by inserting intermediate planks. This utilizes the recyclability of food-friendly plastic barrels of the usual kind with a container volume of 30 120 liters and more.

It should be possible to stack at least 4 layers of filled barrels on top of each other for extended periods of time.

According to the invention, this task is solved by the non-deformable lid-inner rim projecting into the barrel neck extending so far inwardly as to provide a non-resilient radial support for the barrel flange.

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ring, the bottom of the lid extending into the barrel opening to a level below the top of the flange ring, and stiffening ribs which are star-shaped over the inner circumference of the lid are formed between the lid bottom and the lid inner rim.

The lower edge and the bottom with the stiffening ribs provide a solid support which ensures that the flanges on a lying barrel are not deformed and give rise to leaks.

For a particularly resistant stiffening of the lid, in one embodiment of the invention, the inner edge of the lid is extended axially within the lid bottom and a further annular projection is formed concentrically with the extension wherein the two annular projections are connected to one another by means of a circular box carrier. low-bottom protruding radial ribs. This provides additional security against the cap leaving under heavy loads.

In long-term loading of barrels of large volume 20, in exceptional cases curvature of bracing can occur, so that the lid loses stability.

To counteract this, the inner edge of the lid according to the invention may be supported by a rigid insert plate, the outer edge of which in inserted position extends to the inner side of the inner edge of the lid, where there are incisions at the outer circumference of the insert plate forming cut openings for the stiffening ribs.

The insert plate can e.g. be made of plywood veneer.

30 is an example of an embodiment of the barrel according to the invention, and FIG. 1 is a side view of the barrel with the lid attached, and partly in section, and FIG. 2 shows the embodiment of FIG. 1 is an enlarged sectional view and with 35 inserts inserted.

146278

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4 In the drawing, a barrel 1 is shown closed with a lid 2, which is reinforced at the edge with an inward-facing lid-inner edge 6, which goes into an opposite outer wall 14.

Directly on the container wall or sheath, a radially outward, circumferential flange ring 5 is formed at a distance below 5 of the barrel opening. An opening edge 9 extends upwards over the flange ring 5 (Fig. 2).

At cover 2, the flange 5 faces an outwardly deflected outer edge flange 4 on the outer edge of the lid 14. In the space between the outer edge of the lid 14 and the inner edge of the lid. 6, a seal edge 7 is inserted. The lid 2 is pressed sealingly down against the upper edge of the barrel opening edge 9, which extends into the space between the outer and inner edges of the lid. The clamping ring 8 engages 15 on the conical underside of the flange ring 5 and on the likewise conically formed top face of the outer rim flange 4. In the case of external axial loads, the insertion path of the lid 2 is blocked by the flange ring 5, so that the sealing ring 7 cannot slip away or be damaged.

20 The deep-drawn lid 3 projects into the container opening to a level below the surface of the flange ring. The lid inner rim 6 is rigid and forms a non-resilient radial repulsion of the flange ring 5, so that no changes in the sealing conditions 25 can occur upon occurring radial loading of the barrel 1. The lid base 3 and the inner edge 6 of the lid are connected to each other by a number of star-shaped reinforcing ribs. 10th

The inner edge 6 of the lid is extended downwards past the lid bottom 3 and forms an annular projection 12. Concentric 30 with this projection 12 is another annular projection 13 of smaller diameter. The two annular projections 12, 13 are interconnected through radial ribs 11 formed in the lid base, so that a kind of box carrier is formed which forms an additional, circumferential stiffening 35 of the lid base 3 and thus of the inner edge 6 of the lid.

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5 146278

Furthermore, as can be seen from FIG. 2, the lid 2 is reinforced with a rigid insert plate 15 which is fixed to the upper surface of the lid. The outer edge 16 of the plate is inserted into the inside of the inner edge of the lid 6. At the outer periphery of the 5 insert plate 15 there are incisions 17 which serve as passage openings for the stiffening ribs. 10th