Stackable containers including arched bottom with large contact surface

Abstract

A stackable container (1) having a body (2) and a bottom (3), the bottom having: an annular base (10) defining an abutment complementary to a peripheral surface (8) provided on a shoulder (4) A flat surface (11); a conical arch (14) extending from the base (10). In this container: the external transverse dimension Dext of the base and the total transverse dimension D of the main body are such: Dext / D≥0.8; the arch (14) has a peripheral zone (17) which is connected to the shoulder (4 ) is complementary to the frusto-conical support portion (7); the abutment plane (11) and the peripheral support zone (17) define a contact surface, the projection of the contact surface on the abutment plane (11) has such an area Sc: Sc / S≥0.4, where S is the area of ​​the area defined by the outer perimeter (12) of the base (10).

Description

technical field [0001] The present invention relates to containers, in particular stackable containers, that is, containers shaped to be stacked on top of each other, for which purpose said containers are provided with substantially complementary bases and necks, so that the necks of the underlying container can be inserted into the same in the bottom of the upper container. [0002] Stackable containers are used in many applications where the containers are not collected in smaller quantities (eg 6 to 8 containers for household use) and then packaged in groups of shrink-wrapped containers, but are placed directly next to each other. Stacked for storage and transport in trays which, once full, can be wrapped in a stretchable film. [0003] Understandably, there is a need to keep the containers as stable as possible to avoid any collapse of the stack of containers prior to final packaging. And of course ensuring the safety of those involved and the integrity of the container....

AI Technical Summary

Problems solved by technology

[0010] Second, due to the shape and size of the areas for mating (on the bottom and on the shoulders), the proposed locking nest itself does not have sufficient stiffness to allow the containers to stack freely

[0011] Third, the concentration and film packaging of pairs of containers - this can be a reason for palletizing large volume cans (the 5 gallon containers mentioned in the aforementioned patent), for medium or small volume containers (usually a It is unrealistic, and the modern production schedule of up to 50,000 containers per hour for medium- or small-capacity containers is impossible for the operators who are responsible for arranging them, packaging them in pairs with films, and storing and transporting them on pallets complied with

This guidance, which produces an impact, can damage the conical overlapping zone and / or the break-off cap closing the neck of the lower container

[0013] Fifth, even if it is substantively confirmed that the container can be a small capacity (1 pint) container, it is difficult to imagine how the shape of the base can accommodate such a large neck (that is, its neck is relatively large relative to the container body) so as to reduce the container for available space at the shoulder

[0015] This technique has one major drawback: the space provided between the cones is necessary to confine the force to the flat portion of the perimeter of the container, resulting in side gaps that create side gaps where the containers are positioned when stacked

This gap adds up over a stack of three containers (or more) and naturally makes the stack of containers unstable and thus likely to tip over

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