Stackable lid for containers

Abstract

 A stackable lid for containers formed of a first pressed carboard sheet piece (1), in the shape of an in­verted tray the inner perimeter of which corresponds to the outer perimeter of the container opening to be closed, and a second piece (2) of the same material, as well in the shape of an inverted tray with a lesser diameter and a height equivalent to the height of the first piece, the second piece being adhered juxtaposed to the inner face of the first piece, the outer outline of the second piece be­ing equivalent to the inner outline of the container open­ing, the second tray having a perimetral skirt (3) jux­taposed to the bottom of the first tray (1).

Description

[0001] The present invention relates to a stackable lid for containers, to advantage for jars and other cylindri­cal containers.

BACKGROUND OF THE INVENTION

[0002] The containers of the above kind are usually provided with discoidal lids, integral moulded from a plastic material, with the feature that, generally speak­ing, either lid has a peripheral channel-like groove to fit onto the edge of the container opening, as well as an embossed portion covering about all of the lid and protruding towards the inside of the container such that further to its contribution to the internal fitting of the lid within the container opening, prevents the lids stack­ed in the container closing machine from becoming fitted one within the other thus hindering their handling with the purpose of an automatic container closing.

[0003] The need for forming the lids with the above construction has prevented hitherto to manufacture these lids by cardboard pressing or stamping out under a cost which is lower than in the case of the thermoplastic material moulded lids, because the pressing and stamping means used with cardboard are unable to give the ample pressing of the lids which is necessary to prevent their fitting with one another.

DESCRIPTION OF THE INVENTION

[0004] The above problem has been solved with the lid according to the invention, which can be manufactured from cardboard.

[0005] The lid according to the invention is essen­tially formed of pressed sheet piece, to advantage of cardboard material, in the shape of an inverted tray the internal perimeter of which corresponds to the outer perimeter of the container opening to be closed. This piece has adhered thereto another piece of the same material, also in the shape of a pressed tray, of a height to advantage equivalent to that of former piece and jux­taposed to the inner face of the said former piece, yet having an external outline corresponding to the inner out­line of the container opening. This second piece has a marginal skirt juxtaposed to the bottom of the first tray.

BRIEF DESCRIPTION OF THE DRAWINGS

[0006] For a better understanding of the instant specification, a drawing is enclosed wherein a practical embodiment of the lid according to the invention is shown only by way of example. In the said drawing:

Figure 1 is a view in diametral section of the lid in dis­assembled condition;

Figure 2 is a similar view of the assembled lid, and

Figure 3 shows several stacked lids, in diametral section.

DESCRIPTION OF A PREFERRED EMBODIMENT

[0007] The lid as shown in the drawing consists of a pressed piece 1 of cardboard or the like material in the shape of an inverted shallow tray, the internal diameter of which corresponds to the outer diameter of the con­tainer opening to be closed. A second piece 2, as well in the form of a tray, of a lesser diameter and height to ad­vantage equivalent to the height of the first piece, is incorporated within the said first piece 1. The outer diameter of the tray 2 corresponds to the inner diameter of the container opening to be closed.

[0008] The tray 2 has an bow-shaped marginal skirt 3 which is juxtaposed to the inner face of the first tray bottom, such that a channeled groove 4 is formed between the faces of both trays, into which the edge of the con­tainer to be closed is to fit.

[0009] As clearly shown in figure 3 of the drawing, when the lids are stacked, they cannot fit one within the other, because this is prevented by the internal piece 2 protruding from the lid bottom.

[0010] This lid may be manufactured from pressed cardboard pieces at a lower cost that the equivalent lids of thermoplastic material.

Claims

Stackable lid for containers, characterized in that it comprises a pressed sheet piece (1), to advantage of cardboard material, in the shape of an inverted tray the inner perimeter of which corresponds to the outer perimeter of the container opening to be closed, a second piece (2) of the same material, as well in the shape of an inverted tray with a lesser diameter and a height equiv­alent to the height of the first piece, being adhered jux­taposed to the inner face of the said first piece, the outer outline of the second piece being equivalent to the inner outline of the container opening, the second tray having a perimetral skirt (3) juxtaposed to the bottom of the first tray (1).

Drawing