ES2328173T3 - CARTON BOX AND CARTON TROQUEL. - Google Patents

Abstract

A carton and blank (10) for forming a carton for packaging a plurality of articles-, for example bottles, comprising a top (12,20), opposed side walls (14,18) and a base (16), wherein the top wall is a multi-ply arrangement. The top wall further comprises a pair of openings (38,40) defining a handle portion (54,56) to allow a user to lift and carry the carton. A reinforcing strip (42,44) is connected to the handle portion and is disposed to support and reinforce the handle portion.

Description

Cardboard box and cardboard die.

The invention relates to a cardboard box to accommodate one or more items, for example bottles, said cardboard box is provided with a handle structure to help a user in the transport of the cardboard box and the articles. The  invention also provides a die to form said box of paperboard.

Background of the invention

It is known to provide handles on boxes of cardboard to help transport said cardboard boxes. By For example, GB request 2,234,495 comprises a handle structure applied to a cardboard box "completely closed". The handle It is formed by a strip made from one of the panels and it is folded in a central part and is stabilized by a opening in a top flap that covers the top panel.

This handle system cannot be applied to a "envelope type" of cardboard box, since the cardboard box it forms around a plurality of articles during the loading process in a packing machine.

The requests GB-A-1 240 549 and US-A-4 582 199 describe both boxes of cardboard in which handle parts are provided on its panels upper wall defined by openings in the upper wall. There is no publication or suggestion to provide reinforcement in the form of a reinforcement strip in any of these previous documents even if it is described in the documents US-A-3 794 239 or WO2005 / 032960A1.

However, in the present invention the strips reinforcement extend into the side walls, but not in the lower panel of the cardboard box. The nature of the strip reinforcement thus provided is beneficial because this provides an interrupted reinforcement strip that is applied between the openings of handle of each upper handle, so that an amount is required minimum reinforcement material to achieve maximum effect of reinforcement. This is particularly useful in the cardboard box envelope of the present invention; during the production of dies, the reinforcement strip can be easily cut and applied to a line that crosses the center of the cardboard box. A cardboard box comprising a reinforcing strip that is spreads on the side walls described in the document US-A-2002/0079245. However, the Top wall is not a multi-layer panel system.

An envelope type of cardboard box can comprise an upper panel, opposite side panels and a base structure that is formed by end panels opposite of a cardboard die. Thus, the cardboard box will have a upper panel formed by a single layer.

It is known to provide one or more openings in a top panel of a cardboard box, to allow A user grab such a cardboard box. However, such boxes of cardboard are typically made to accommodate relatively few items, say, for example, six bottles.

A problem associated with the prior art is how to preserve the integrity of those handles that are subject to significant voltages when used on a box of cardboard intended to carry many more multiple items.

The present invention and its embodiments preferred seek to overcome or at least mitigate the problems of prior art

Summary of the Invention

One aspect of the invention provides a cardboard box for packing a plurality of articles, for example bottles, comprising an upper part, opposite side walls and a base, in which the upper wall is a multilayer panel system comprising a pair of openings that define a handle part with each other to allow a user to lift and carry the cardboard box and in which the multilayer panels of the upper wall are each provided with a reinforcement strip that is in an overlapping relationship to reinforce the multilayer part of the handle part, characterized in that each reinforcement strip is attached to the handle part of an upper wall panel and extends in and is also attached to that adjacent side wall, but does not reinforce the panel It provides the base of the carton.

Preferably, the or each reinforcement strip is attached to the surface of the cardboard box that provides the inner surface of multilayer panels.

According to a feature of this aspect of the invention, The cardboard box may further comprise a groove in the flat alignment with the or each reinforcement strip, whose groove is extends between a side wall and the base, to distribute the tensions across a larger area of the cardboard box in the time to lift and carry it. Preferably, a second slit between the opposite side wall and the base.

Another aspect of the invention provides a die to form a cardboard box to pack a plurality of articles, for example bottles, comprising a plurality of panels connected to each other in an articulated manner, said panels they comprise in series, an outer panel that forms the upper wall, a first side wall panel, a base panel, a second side wall panel and an interior panel that forms the wall upper, interior and exterior panels that form the wall each one comprises a pair of openings adapted to be aligned at the time of use and that define handle parts to allow a user to lift and carry the cardboard box, in which the handle parts are provided with reinforcement strips of such so that each top wall panel in the area of the handle part It is reinforced by a reinforcement strip, the reinforcement strips are  fixed to the upper wall panels placed between the openings and extend in and are also attached to the panel of adjacent side wall, but do not reinforce the panel that Provides the base of the carton.

According to a feature of this aspect of the invention, the cardboard box may comprise a groove in flat alignment with the or each reinforcement strip, said slit is extends through the articulated connection that connects the second side wall panel and base. Preferably, it is provided a second slit that extends through the connection articulated connecting the first side wall panel and the base.

Brief description of the drawings

The exemplary embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings in which:

Figure 1 is a plan view of a die to form a cardboard box according to a first embodiment of the invention;

Figure 2 is a perspective view of a cardboard box mounted and loaded, formed from a die shown in Figure 1.

Detailed description of the preferred embodiment

In reference to the drawings a cardboard die to form a cardboard box.

The die and the cardboard box are formed of paper or other folding sheet material, for example plastic or similar, in which cut lines and lines of fold. Cardboard boxes are used to accommodate one or more items, for example bottles and distribute said product. While in the illustrated embodiment, a single die is used to make only one carton, it is planned to be they can use two or more dies, for example to provide the  handle medium, described in more detail below.

Referring now to Figure 1, a die 10 comprising a plurality of panels to form a Cardboard box with a handle device. In the first mode of embodiment the die 10 comprises in series an outer panel that it forms the upper wall 12, a first side wall panel 14, a panel 16, a second side wall panel 18, and an inner panel which forms the upper wall 20 connected in an articulated manner to the next in series along the fold lines 22, 24, 26 and 28 respectively.

In a class of embodiments the panels Sidewall 14 and 18 are formed in a two-structure parts with a fold line 29 and 32 respectively, placed between the upper and lower ends of the wall panels side.

In some embodiments, it comprises also an access structure to access the articles retained inside the cardboard box. In the embodiment illustrated in Figure 1, the access structure comprises a tear line formed by brittle fold lines 34 and 35 and a tongue 36 formed in the first and second panels of side wall 14 and 18.

Items can be supported in the boxes of cardboard by one or several openings 46 and 48 formed in the side walls and bottom base structures, as Knows in the art. In this embodiment the structure of base also comprises a series of openings 50 to receive and keep support legs in a box, in order to keep the boxes cardboard in a box.

Returning to the handle structure, it comprises a pair of flaps 38 to form hand openings made to from the upper outer wall panel and connected so further articulated along the fold lines 39, thus defining a first handle part 54 between the flaps 38. A second handle part 56 is formed in the inner wall panel upper 20 for a second pair of inner flaps 40 made from the inner panel that forms the upper wall. The flaps 40 provide a second pair of openings, in employment, and  are articulated connected to the inner panel that forms the upper wall along the fold lines 41. Preferably the inner flaps 40 are provided with a plurality of cut lines (not shown), to allow flaps 40 that fold around the items contained in the carton box.

In the embodiment of Figure 1, it also comprises a first reinforcement strip 42 applied to the handle part 54 by means of glue or other convenient fixing means. The strip 42 extends in and is attached to the side panel 14. It also includes a second reinforcement strip 44 applied to the second handle part 54 and extends in the second panel of side wall and is also fixed by glue or other means convenient known in the art.

In a class of embodiments, it comprises furthermore a groove 52 applied through the fold line 24 and preferably the fold line 26 and the wall panel of base 16. In employment, the opening is used to distribute the voltage concentration that passes through the base panel from the handle through a larger area of the cardboard box.

To build the cardboard box, it is done reference to the cardboard box illustrated in Figure 2 of the drawings. The folding and gluing operations can be made on one or several machines in line, so that it is not require spinning or inverting the cardboard box to complete your building. The following process is not limited to what is described. later and can be changed according to the requirements manufacturing particulars

Referring to Figure 2, the cardboard box It is constructed by wrapping the die 10 around a series of items that are placed on the base wall panel 16, by known methods The side wall panels 14 and 18 are folded out of alignment with the base wall panel 16 and the items located in openings 46 and 48. In the mode of illustrated embodiment, 12 bottles are packed in an arrangement of 2x6. The multilayer upper wall is constructed, bending the panel of upper inner wall 20 inside along the line of fold 28, and folding the upper outer wall panel 12 by inside along the fold line 22 to cover the panel interior that forms the upper wall to be fixed in addition by glue or other convenient fixing means.

Flaps 38 and 40 line up to define a multilayer handle part 54/56. The reinforcement strips 42 and 44 are align to support and reinforce the handle part 54/56, and thus improve the integrity of the handle.

In employment, the flaps 38 and 40 are folded by inside to provide openings for one hand or the fingers of the Users to allow to carry the cardboard box.

It is planned that the shape of the structure of handle is not limited to what is described above and can be changed according to the particular size and shape of the cardboard box Make it manufactured.

The present invention and its embodiment preferred relate to a device to provide a handle structure in a cardboard box. But nevertheless, it is envisioned that the invention can be applied to a wide variety of cardboard boxes and is not limited to those of the type envelope described here and can be used for numerous applications. It will be recognized that how references are used here directional like "top", "base", "lateral", "interior", and "exterior" do not limit the respective panels with said orientation, but simply serve to distinguish these panels from each other. Any reference to an articulated connection should not be interpreted as necessarily in reference to a single fold line only: in reality is that the articulated connection can be formed by one or several of the following, a cut line, a brittle line or a fold line without departing from the scope of invention.

Claims (8)

1. Cardboard box intended for packing a plurality of articles, for example bottles, contains an upper part (12, 20), opposite side walls (14, 18) and a base (16), where the upper wall is constituted by a system of multilayer panels that have a pair of openings (38, 40) that, together, delimit a handle part (54, 56) that allows the user to lift and transport the cardboard box and where the multilayer panels of The upper wall is each provided with a reinforcement strip (42, 44) which is in an overlapping relationship to be able to reinforce the multilayer part of the handle part, characterized in that each reinforcement strip (42, 44) is fixed to the handle part (54, 56) of an upper wall panel (12, 20) and extends and is also fixed to the adjacent side wall (14, 18), but does not reinforce the panel that provides the base (16) of the cardboard box. 2. Cardboard box as it is claim in claim 1 wherein the or each reinforcing strip (42, 44) is attached to the surface of the cardboard box that provides the inner surface of multilayer panels. 3. Cardboard box as claimed in the claim 1 or claim 2 further presenting a slit (52) in a flat alignment with the or each strip of reinforcement (42, 44); whose slit extends between a wall lateral (14, 18) and base (16), and thus allows distribute tensions across a wider area of the box of cardboard at the time of lifting and during transport. 4. Cardboard box as claimed in the claim 3 presenting a second slit (52) which extends between the opposite side wall (14, 18) and the base (16). 5. Die (10) to form a cardboard box intended for packaging a plurality of articles, for example bottles, consisting of a plurality of panels connected to each other in an articulated manner, said panels contain, in series, an outer panel that it forms the upper wall (12), a first side wall panel (14), a base panel (16), a second side wall panel (18) and an inner panel that forms the upper wall (20), characterized by that each of the inner and outer panels that form the upper wall (20, 12) comprises a pair of openings (38, 40) adapted to align at the time of use and that delimits handle parts (54, 56) to be able to allow the user to lift and transport the cardboard box, where the handle parts are provided with reinforcement handles (42, 44) such that each upper wall panel (12, 20) in the area of the handle part ( 54, 56) is reinforced by a reinforcement strip, the reinforcement strips are fixed attached to the upper wall panels (12, 20) by means of the openings (38, 40) and extend and are also fixed to the adjacent side wall panel (14, 18) but will not serve as reinforcement to the panel that provides the base (16) of the cardboard box. 6. Die as claimed in the claim 5 further presenting a slit (52) in a flat alignment with the or each reinforcement strip (42, 44), this slit extends through the articulated connection that connects the second side wall panel (18) to the base (16). 7. A die as claimed in claim 6 further presenting a second groove (52), this groove extends through the articulated connection connecting the first side wall panel (14) to the
base (16). 8. Packaging containing a plurality of items grouped and retained in the carton according to a any of claims 1 to 4.