FI76757B - LOCK FOER ENGAONGSBEHAOLLARE. - Google Patents

Description

1 76757

The present invention relates to a lid for disposable containers, in particular ready-to-eat boxes, which are made of aluminum sheet or the like and have a profile asymmetrical with respect to the center of the lid, a circumferential brace strip and a gripping strip.

Stackable lids for disposable boxes are known. In addition to the stackability and easy unstacking, the covers must, if possible, meet another requirement. They must be easy to open without the risk of splashing of the parts of the filled disposable container due to sudden, unintentional breakage or tearing when opened. When opening the lid, it must be possible to remove it as completely as possible. Deletion in two parts would still be acceptable. Therefore, opening is a particular problem, among other things, because the lid must be closed by disposing of the disposable box tightly at the circumferential edge around it.

One of the known covers is provided with gripping strips, which, among other things, facilitate the opening of a closed disposable box. In order to improve the stackability of the lids in particular, profilings have been formed on these gripping strips, in which case, in addition, the gripping strips are preferably made of different lengths. The profiles of the opposite gripping strips are formed offset from each other, thus improving the stackability. It has been found that these gripping strips do not yet guarantee any optimal opening of the lid.

It is therefore an object of the present invention to further develop the lid so that it can be easily, definitively and as completely as possible removed from the closed disposable box, without the risk of accidentally splashing or splashing out when the contents of the disposable box are opened.

2 76757 This object is solved according to the features of claims 1-4.

Thanks to the structure according to the invention, the lid can be torn as defined from an arbitrary point of the circumferential gripping strip or along the ball or further below the chord. At the point of grooving or notching, due to the formation according to the invention, a tear strip is formed which, when torn, tears along the ballast in a defined manner. Thanks to the wide brace edge strip and the additional grip strip, even on those sides where there is no grip strip, a narrow, downward, circumferential grip strip is formed.

Between the chord and this strip of gripping, a relatively sharp, circumferential fold line is formed as a result of the chamfering, which indicates a weakening of the material and thus forms a wish line along which the lid tears accurately, relatively easily and without determined forces.

When the pallets and thus the groove or notch are formed obliquely, as defined in the further development of the solution according to the invention according to claim 5, a more advantageous tear transition takes place from the gripping strip through the chord to the fold line between it and the gripping strip. Once the ballings of the second gripping strip have been made oblique, the ballings of the second opposite gripping strip of the lid no longer need to be displaced, to improve unstacking.

If several gripping tines are provided, they can also be provided with grooves and notches, as set out in claim 6. In this case, the notch or notch is preferably made along a fold line, as indicated in claim 7.

The ........ ______ structure according to the invention as defined in claims 8 and 9 already takes care of equipping the lid in the area of the wish access in the form of a circular weakening of the material.

II

3 76757 in the form of a circumferential attenuation of the material made in the region of the subsequent chord edge or the later chord or in the area of the hollow head, i.e. when the box is closed.

The tear of the gripping strip can occur at any point. Opening a closed disposable box is greatly simplified. Collapsible lid parts no longer exist. The risk of splashing the contents of the box when opened is virtually eliminated. The lid made according to the invention can be lifted out of the box after tearing around in a substantially planar manner.

The invention will now be described as some application examples, with reference to the accompanying drawings, in which Figures 1 and 2 show a top view of a lid according to the invention, Fig. 3 shows a section AA (Fig. 1 or 2) of a lid according to the invention in unpaired condition, Fig. 4 shows section BB a lid from an unpaired lid, Fig. 5 shows a section AA (Fig. 1 or 2) according to the invention; the formed lid in a gated state,; Fig. 6 shows a section BB (Fig. 1 or 2) of the lid formed according to the invention in the gated state, Fig. 7 schematically shows the lid formed according to the invention in section, Fig. 8 shows another embodiment of the lid formed according to the invention and Fig. 9 shows a section of the lid according to Figs. mode on top of the disposable container.

4 76757

In the figures of the drawings, the same components are denoted by the same reference numerals.

The drawings show a cover 2 with a circumferential upwardly bent edge 4 and an associated downwardly bent brace edge strip 6 and in addition a circumferential gripping strip 46. Arranged on the two opposite sides of the cover are in each case an outwardly directed gripping strip extension 8 and gripping strips 8 and 10.

The lid has a rectangular shape with rounded corners 12, 14, 16 and 18. The extensions of the gripping strip are formed on the short sides 20, 22 of the rectangle, but they can also be formed on the longer sides or on all sides of the rectangle.

An asymmetrical profiling 30 is formed in the upper surface 28 of the lid.

As shown (Figs. 1 and 2), the extensions of the gripping bandage are also provided with a 32-shaped profiling of the ballasts. According to what is shown, the balloons are rib-like bumps and can be formed in the shape of a rectangle or a trapezoid, for example. The balloons can run perpendicular (Fig. 1) or obliquely (Fig. 2) to the side of the rectangle. As shown, the extensions of the adhesive bandage may be different in width.

A groove 36 or notch 38 is arranged along at least one notch 32, i.e. preferably along the fold line of this notch, this notch or notch need not pass over the entire length of the notch, cf. reference numerals 40 and 42 in Figures 1 and 2.

In the girdered state, the downwardly directed gripping band strip 46 remains below the strapping 44 formed of the strapping edge strip, which strapping edge band forms a narrow gripping strip 48 on rectangular sides 24 and 26 not provided with gripping strap extensions 8 and 5 76757 10.

As a result of the chamfering, a relatively sharp fold line 50 is formed between the chord 44 and the strip 46 or the gripping strip 48, which is formed to rotate below the chord 44.

This fold line 50 represents a kind of wish line.

Namely, when the cover 2 is torn from the extension of the gripping bandage, i.e. the gripping strip 8, from the groove 36 resp. 40 or love 38 resp. 42, so that the lid tears relatively easily around the fold line 50. The lid 2 can also be torn off as defined without grooves or notches along the chord. The lid can then be lifted out of the box as a whole.

Groove 36 left 40 or notch 38 resp. The transition of the fold line 42 to the fold line 50 via the chord 44 is facilitated so that, as shown in Fig. 2, the ballasts 32 do not run perpendicularly but obliquely to the side or chord edge 6 of the cover.

Figure 1 shows that, in addition, the second strip 10 can also be provided with a groove 52 or a notch 54, so that a new tear can possibly be obtained here if the tear along the fold line 50 is not successful in one step.

Figures 7-9 show a cover 2, 2 'with a cover surface 4, a brace edge strip 6, 6', 6 "and an associated gripping strip 8. The brace edge strip 6, 6 ', 6" is at least partially smaller! thickness than other parts of the deck. In Fig. 9, the lid 2 'is shown in a stretched state on top of the box 10'. The material-thinned brace edge strip 6 is then braced around the circumferential brace edge or bead 12. In this case, the gripping strip 8 faces downwards.

Figure 8 shows a particular possibility to weaken the brace edge strip of the lid for tearing. By shaping, here by embossing, the ribbed edge strip obtains an inwardly curved balloon 6 'in the form 6 76757 (Fig. 8 at the left) or an outwardly curved ballast 6 "(Fig. 8 on the right). Contrary to what is shown, the ballast can also be arcuate.

As a result of the weakening of the material, a hollow tear area 6, 6 ', 6 ”is formed, along which the lid 2, 2' can be easily torn and defined approximately at the circumference of the box, so that after tearing the lid can be removed from the box practically completely.

Il

Claims (9)

1. Lids for disposable boxes, especially finished food boxes, consisting of an aluminum segment plate or the like and which have a profile formed in relation to the center of the lid asymmetrically made (30), an approximately flange edge section (6) and gripping strips (6). 8, 10), characterized in that the sliding circumferential binder section (46) descends to the flange edge section (6) through a folding line (50). Cover according to Claim 1, characterized in that the gripping sections (8, 10) adhere to the gripping sections (46). 3. A lid according to claim 2, characterized in that the gripping sections (8, 10) are provided in respective cases in relation to one another in the form of joints (32) in the form of joints, which also extend to the circumferential bond section (48). 4. A lid according to claim 2, characterized in that the gripping sections (8, 10) are provided with profiles (32) formed between the end of the gripping section and in the form of joints, with the joint (32) or part of the gripping section (8, 10). it is provided with a groove known per se (36, 42) or a groove known per se (38, 41). 5. A lid according to claim 4, characterized in that at least one of the joints (8) of the gripping section (8) ends at an angle of 90 ° deviating from the flange edge section (6) and that the groove (36, 40) or the cut (38, 42) arranged in one of these obliquely running joints. 1 Cover according to any of the preceding claims, characterized in that the gripping or cutting section of the gripping section is made in a joint in each arranged gripping section.