JPH044227B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides packaging containers for housing containers, such as cans, each having a peripheral rim extending beyond at least one end, and a method for forming such packaging containers. Regarding semi-finished products.

For example, US Patent No. 2788603, US Patent No. 2982399,
No. 3031812 and British Patent No. 825971, a packaging container and a can can be held in position with respect to each other by cooperation between a tongue (or flap) formed on the packaging container and a rim at the end of the can. It is known to package cans into packaging containers.

The object of the present invention is to strengthen the holding force between the packaging container and the can to form a stronger and more reliable cooperation between them.

It is an object of the present invention to provide a packaging container for accommodating containers, such as cans, each having a peripheral rim extending beyond at least one end, comprising: a retaining opening in which a peripheral portion of the rim is received; a retaining tongue having a free edge that joins the inner surface of said peripheral portion of said rim for retaining the mutual position of the packaging container, said retaining tongue being connected to said retaining opening; The retaining opening is hinged along an arcuate fold line extending between both ends of the rim such that the distance between the arcuate fold line and the peripheral edge of the rim is greatest midway between the ends of the holding opening. This can be achieved by providing a packaging container that

For a clearer understanding of the invention, reference will now be made to the accompanying drawings, which illustrate one embodiment of the invention.

FIG. 1 shows two cooperating base panels 10, 12 and side wall panels 14, 16, respectively, of an enclosed sheath.
shows.

Panel 10 is notched and retaining tabs 22 are provided to secure the two base panels together.
a pair of male locking tabs 18 defined by 24;
Contains 20. To ensure tight assembly of the sheath to the article to be packaged, a row of clamping holes 26, 28 are respectively formed in the base panel for engagement with appropriate clamping elements of the packaging machine. These features are well known per se.

A row of raised edge retention openings, including openings 30, 32, and 34, are stamped from the blank along the fold line 36 where the base panel 10 and sidewall panel 14 are hinged. Similarly, openings 38, 40, 42
is formed along fold line 44 where base panel 12 and sidewall panel 16 are hinged. Since each of the protruding edge retaining openings has the same features, only the features of the opening 32 will be described for the sake of brevity. Opening 3
2 is an arcuate fold line 48 formed on the base panel 10.
is defined by a protruding edge retaining tongue 46 hinged along. The arcuate fold line 48 extends from one edge of the opening 32 to the other edge to form the rounded corner 5 of the opening.
0,52 are interconnected, the center of curvature being located in the portion of side wall 14 beyond the opposite straight edge 54 of opening 32.

The tongue 46 is formed with a pair of diagonal fold lines 54, 56, each extending between each hinged corner of the tongue and a free straight edge, thereby forming rounded corners 50, 52. Adjacent folded ears 58, 60
is defined.

The retaining tongue 46 engages a peripheral portion of the can's projecting edge 62 (FIG. 2) so that the packaging container and can are held in position relative to each other. Such engagement is accomplished during the packaging process, which will be briefly described below.

An appropriate number of cans (in this example, 6 cans arranged in two rows of 3 each) to be accommodated in the semi-finished packaging product are assembled into a group using the conventional method, and the top panel of the semi-finished product (Fig. (not shown) on the top of the can. Next, the side wall panels 14, 16 are folded downward along the main body of each row of cans. Having previously folded the base panels 10, 12 along fold lines 36, 44 outwardly away from the row of cans, the base panels 10, 12 are in a substantially parallel position to the top panel. This folding step causes the free edge of the lip retaining tongue to disengage from the adjacent edge of the corresponding lip retaining opening, resulting in each tongue projecting inwardly of the peripheral portion of the adjacent can lip. Thus, the peripheral portion of the can protruding edge is received in the adjacent protruding edge retaining opening. To complete the packaging process, the base panels 10, 12 are folded upwardly and further inwardly, securing the securing tabs 18, 20 and the associated retaining tabs 2.
2 and 24 and tighten.

Referring again to the protruding edge retention opening 32 and tongue 46, during the final folding stage the retention tongue 46 is within the retracted bottom of the can 64 and the arcuate fold line 48 folds the base panel. pivot around. This pivoting of the tongue 46 causes the folded ears 58, 60 to engage the can protruding edges 62 at opposite ends of the retention opening 32, resulting in diagonal fold lines 54, 60, respectively.
56 so that the free edge of the retaining tongue 46 joins the inner surface of the can protruding periphery at the can bottom. The retaining tongue is dimensioned to substantially conform to the contour of the inner surface of the can projecting edge, the projecting edge being within the retaining opening, such that the projecting edge is within the projecting edge retaining opening. It is fixed to the part.

It will be appreciated that retention is enhanced in connection with cans having projecting edges that extend beyond the ends of the can and also project outwardly from the can body. In this example, the straight edge 5 of the protruding edge holding opening 32
5 engages under the outwardly projecting portion of the protruding edge when the protruding edge retaining tongue 46 is positioned. A short score line 66 extends upwardly from the straight edge 55 to provide some clearance for the side wall panel material around the can body adjacent the projecting edge.

The advantage of having an arcuate fold line 48 is that the retaining tongue is strengthened because it encompasses a larger amount of material than if the fold line ran parallel to the straight edge 55. It is. Furthermore, the angle at which the retaining tongue joins the can protruding edge is more gradual than if the retaining tongue were hinged along a straight fold line. That is, since the retaining tongue has a gentle slope relative to the bottom of the can, a force greater than that required when the slope is steep is required to disengage the retaining tongue from the protruding edge. It is.

Although this description specifically refers to cans with raised edges, it will be appreciated that the invention is applicable to holding other suitable articles having at least one collar or rimmed end. Note that in the case of articles having projecting edges or rims at each end, the hinged engagement of the top panel and side wall panel of the packaging container may also include projecting edge openings so that the article is retained at both ends. can.

[Brief explanation of drawings]

FIG. 1 is a plan view of a pair of joint base panels for a semi-packaged product, each panel having a can retaining tongue according to the invention. FIG. 2 is a sketch of a portion of a packaging container using the semi-finished packaging product of FIG. 1, showing the connection between the retaining flap and the protruding edge of the can at the peripheral edge of the can. 10, 12... Base panel, 14, 16... Side wall panel, 18, 20... Male locking tab, 22, 2
4...Retaining tab, 26, 28...Tightening hole, 36,
44... Folding line, 30, 32, 34... Protruding edge holding opening, 38, 40, 42... Protruding edge holding opening, 46... Protruding edge holding tongue, 50, 52...
Rounded corners of the protruding edge holding opening 32, 55... Straight edges of the protruding edge holding opening 32, 54, 56... Diagonal fold lines, 58, 60... Folded ears, 66...
Folding line, 62... protruding edge of can, 64... can.

Claims (1)

Claims: 1. A packaging container for accommodating containers, such as cans, each having a peripheral rim extending beyond at least one end, comprising a retaining opening in which a peripheral portion of the rim is received; a retaining tongue having a free edge that joins the inner surface of said peripheral portion of said rim for retaining the mutual position of the packaging container, said retaining tongue being connected to said retaining opening; The retaining opening is hinged along an arcuate fold line extending between both ends of the rim such that the distance between the arcuate fold line and the peripheral edge of the rim is greatest midway between the ends of the holding opening. The packaging container. 2. said retaining tongue is dimensioned such that said retaining tongue occupies an area defined by said peripheral portion of the container rim and said arcuate fold line, the free edge of said retaining tongue being between said ends of said retaining opening; A packaging container according to claim 1, characterized in that the packaging container substantially follows the contour of the peripheral portion of the rim of the container. 3. The retaining tongue is hinged at each of its ends to the adjacent central portion of the tongue by a diagonal fold line extending from one end of the arcuate fold line to the free edge of the retaining tongue. and a tab (ear) that is folded downwardly at a corner of the retention opening so that the free edge of the retention tongue follows the contour of the peripheral portion of the rim of the container. A packaging container according to claim 1. 4. The retaining opening comprises a locking lip adjacent to the free edge of the retaining tongue, said locking lip being located on the tongue of said peripheral portion of the rim projecting outwardly from the body of the container. The packaging container described in Scope 1. 5. In packaging containers for accommodating containers, such as cans, each having a peripheral rim extending beyond at least one end and outwardly from the container body, a retainer in which the peripheral portion of the rim of the container is received; a retaining aperture, the retaining aperture having one straight edge located beneath an outwardly extending portion of the rim received in the aperture, and engaging an inner inner surface of the peripheral portion of the rim; an arcuate folding line, comprising a retaining tongue such that the can (container) and the packaging container are held in position with respect to each other, the retaining tongue forming an arc in a direction away from the one straight edge of the retaining opening; A packaging container comprising a free edge hinged along the inner surface of the rim and extending between opposite ends of the retention opening, the free edge generally following the contour of the inner surface of the rim. 6 a top panel, a pair of side wall panels hinged to opposite ends of the top panel, and a pair of base panels hinged to each of the side wall panels and spaced apart from the top panel, adjacent to the side wall panels; a plurality of article retention means spaced apart along the joint of each of the base panels of the base panel, the retention means including an elongated retention opening and a retention tongue extending therewith and located in the side wall panel; the retention opening receives a peripheral portion of the rim of the article such that a straight edge of the retention opening engages below the rim, and the tongue-like opening engages an inner surface of the rim; a free edge that can substantially follow a linear edge of the retention opening, the tongue being hinged to the adjacent base panel along an arcuate fold line, the fold line extending away from the linear edge of the retention opening; A packaging semi-finished product, characterized in that it is arcuate and extends between the ends of the holding opening. 7. The semi-packaged product according to claim 6, wherein the center of curvature of the arcuate fold line is located inside the adjacent side wall of the packaging container.