Several types of containers for hot drinks are already known, typically made in suit- able materials like laminated cardboard, PET, foam polystyrene, which are stackable for the subsequent sale thereof.

The problem with the polystyrene, plastics, and also cardboard containers, ensues from the fact that those are prone to get stuck during the stacked storage thereof.

For the plastics or polystyrene containers, several solutions have been adopted which consist in obtaining thereon, during the mould forming thereof, projecting members apt to provide a support thereto during the stacking stage thereof, thus avoiding interfer- ence between the walls of a first container when it is stacked on a respective underiy- ing second container.

In the instance of the laminated cardboard containers, it is provided that the container wall be made with two cardboard layers, sandwiched by a web apt to form an air gap.

Thus, an insulating effect on the wall is attained. However, a problem of suchlike containers lies, given the wall compliance and the geometric configuration thereof, in their marked proneness to get stuck when stacked stored.

Therefore, the object of the present invention is to overcome the abovementioned problems providing a cardboard container with laminated walls which be apt to be stacked and not be prone to get stuck onto another container when in the stacked condition.

Hence, according to the present invention a cardboard container for hot drinks, having a perimetral wall and a bottom wall, characterised in that it further comprises means for the supporting thereof when it is stacked arranged in a respective container, is provided.

The container of the present invention will hereinafter be better illustrated by a de- tailed description of a preferred embodiment thereof, given by way of example and not for limitative purposes, making reference to the annexed drawings, wherein: Fig. 1 is a plan view of a blank for the making of the container of the present inven- tion; Fig. 2 is a schematic perspective view, partially illustrating a process for manufac- turing the container of the present invention; Fig. 3 is an elevational and partially sectional view illustrating the container of the present invention in a stacked condition.

With reference now to Fig. 1, a blank 1 apt to realise said container once assembled, having an outside surface 2 and an inside surface 3 (not shown in the Fig.) is illustrated.

According to a first process of the present invention, it is provided that onto the surface 2 a creasing 4, apt to project internally to the container once assembled, be obtained (bet- ter illustrated hereinafter).

With reference to Fig. 2, an alternative process for manufacturing the container of the present invention is illustrated. For the sake of simplicity, same parts will be indicated by the same reference numbers.

According to such alternative process, it is provided that the container be formed with an uncreased blank 1, by arranging the former on a forming revolving supporting member 5.

The revolving supporting member 5 has on its surface a perimetral groove apt to form a respective creasing 4 onto the outer surface 2 of the container 1 when the supporting member 5 revolvingly engages to a complementary knurl 6.

SUBSTITUTE SHEET (RULE 26) It has to be specified here that the complete apparatus and the related means for actu- ating the member 5 and the knurl 6 are not depicted in the Fig., as already comprised in the state of the art and, therefore, not forming part of the inventive scope of the present invention.

Making now reference to Fig. 3, in a partial section an embodiment of the container 1 manufactured with the process of the present invention is illustrated. According to the present embodiment of the container, the latter is provided with a laminated wall wherein a second outside wall 7 fixedly arranged onto the container 1 with a respective forming step already known to the state of the art, is provided. This arrangement allows the manufacturing of a container 1 apt to provide an insulating effect onto the wall 7 and 2 by virtue of the presence of an air gap, hence being particularly suitable for hot drinks.

As it is apparent from the Fig., the forming of a creasing 4 allows a perfect stackability of a container 1 with respect to another identical one by virtue of the fact that the perimetral edge 8 of the second outside wall 7 is apt to rest onto the creasing 4 when the container 1 is inserted in another container 1. The arrangement of the creasing 4 allows to prevent a container 1, once inserted into another container 1, from getting stuck onto the outer walls of the latter. In fact, by virtue of the support provided by the creasing 4 to the out- side wall 7, the container 1 is thus maintained in position without making the outside wall 7 thereof adhere onto the inside wall 3 of a respective underlying container 1, thus avoiding a stuck-up thereof.

It has to be pointed out that the present invention is also applicable to containers having an individual plain wall 2 wherein the contact is avoided by interference of the creasing 4 onto the outside wall 2 of a respective container 1 in the stacked condition.