ES2231211T3 - BOX SEMIELABORATED OF BOX. - Google Patents

Abstract

A carton and a carton blank constructed from paperboard or like foldable sheet material for enclosing one or more articles, for example a tray of foodstuff, comprising a plurality of wall panels for forming a tubular structure including top and base wall panels (16, 12, 20), opposed side wall panels (14, 18) and one or more end retention wall panels (22, 24) connected to one end of said top wall panel (16). The end retention wall panel (22) is connected to the base wall panel (20) by a corner arrangement (26). The corner arrangement (26) is so constructed and arranged to cause the end retention wall panel (22) to be secured in an erected position.

Description

Box and semi-finished box.

The present invention relates to a box for contain items and, more particularly, to a flat tubular box for use in the packaging of a product tray food.

In the prior art numerous are planned containers for food products that are adapted for Protect food products. For example, in the art above, it is possible that food products move inside the tray, which is not convenient. In addition, the technique above exposes complicated end retention structures that require a prolonged and / or complicated folding procedure during the folding stage of the box.

An example of a structure of end retention in WO 97/29972 of The Mead Corporation that discloses an envelope box that presents a side wall contact arrangement for fixing a panel base end retention, which is attached to a contact panel of upper wall through several intermediate panels.

By way of background information, for similar box constructions known for the packaging of one or more articles, comprising a plurality of walls to form a tubular structure that includes walls upper and base, opposite side walls and walls with extreme retention, the reader is referred to FR documents 2,483,884A and US 4,917,291 A (corresponding to the preambles of claims 1 to 7). In GB 2 326 399A it is given to also know another arrangement of tubular box.

The present invention is intended to overcome, or so less mitigate the problems of the prior art.

An aspect of the invention provides a box Constructed from cardboard or a foldable sheet material similar to pack one or more items, for example a tray of food products, comprising a plurality of walls to form a tubular structure that includes upper walls and base, opposite side walls and one or several walls of extreme retention, attached to one end of said upper wall in the that the extreme retaining wall is arranged in its position of end retention by means of an arrangement of panels corner comprising a first anchor panel articulated to the base wall, a bellows structure articulated to the wall of extreme end retention and a second anchor panel articulated to both the first anchor panel and the panel and to the bellows structure, characterized in that the bellows structure and the second anchor panel are sized and placed for arrangement in relation to overlapping each other against a wall adjacent to the side walls and the first anchor panel is dimensioned and placed for folding in contact relation of faces with the base wall, achieving relative positions of the first and second anchor panels and of the structure of bellows when the box is arranged in its tubular structure, thus providing the extreme retaining wall in its position of end retention.

According to an optional feature of this aspect of the invention, the bellows structure comprises one or more bellows panels.

Preferably, the bellows structure It comprises two articulated bellows panels, in which one of the bellows panels is attached to the second anchor panel and the other Bellows panel is attached to the extreme retaining wall. According Another optional feature of this aspect of the invention, the fold line between the first anchor panel and the second panel anchor can be arranged on the fold line between the wall Adjacent side and base wall.

According to another optional feature of this aspect of the invention the second anchor panel is cut by at least in part from the adjacent side wall and / or a part of the upper wall through an opening. Preferably, the opening can be formed to receive and retain an outstanding part from the article.

A second aspect of the invention provides a semi-finished to form a box built from cardboard or similar foldable sheet material comprising a first panel of base, a first side panel, a top panel, a second panel side and a second base panel joined together so articulated in series, presenting the upper panel also less an end retention panel joined in an articulated manner to the same in which a corner arrangement comprising a panel of bellows and an anchor structure joins the retention panel of end to the first base panel, and when it rises to form a box, fix the end retention panel in a raised state in which the bellows panel is articulated to the retention panel of end, and in which the anchor structure is articulated to the first base panel, characterized in that the anchor structure it comprises a first anchor panel and a second anchor panel in which the first and second anchor panels can be arranged in face contact relationship with the first base panel and the first side panel respectively, and in which a opening between the anchor structure and the first panel side.

According to another optional feature of the second aspect of the invention, the second anchor panel may be jointly attached to the first side panel.

According to another optional feature of the second aspect of the invention, a second panel of bellows that, when the semi-finished one is raised to form the box, cross the adjacent corner of the top panel.

Below are some ways to embodiment only by way of example, referring to the attached drawings, in which:

Figure 1 is a semi-finished according to a first embodiment of the invention;

Figure 2A is a perspective view of a example of an article to be packed by semi-finished represented in figure 1;

Figures 2B and 2C are views in perspective of the box that is formed from semi-finished of figure 1 represented during construction and in shape raised

Figure 3 is a semi-finished according to a second embodiment of the invention;

Figures 4A and 4B are views in perspective of the box formed from the semi-finished one of the Figure 3 represented during construction and in a form raised

Figure 5 is a semi-finished according to a third embodiment of the invention;

Figures 6A and 6B are views in perspective of the box formed from the semi-finished one of the Figure 5 represented during its construction and in a form raised

Figure 7 is a semi-finished according to a fourth embodiment of the invention; Y

Figures 8A and 8B are views in perspective of the box formed from the semi-finished one of the Figure 7 represented during construction and in a form raised.

Detailed description of the embodiments preferred

Referring to figure 1, it shows a semi-finished 10 to form a wrapping box made from cardboard or similar folding sheet material to pack an item, for example a tray to contain food products, such as frozen meat or groceries. In this embodiment, the semi-finished 10 comprises a plurality of panels to form a tubular structure that includes a first base panel 12, a first side wall panel 14, a top wall panel 16, a second side wall panel 18, and a second base panel 20 joined in an articulated manner in series along fold lines 42, 44, 46 and 48 respectively. A pair of end retention panels 22 and 24 are articulated together to the opposite ends of the panel upper wall 16 along fold lines 50 and 52 respectively.

The first and second base panels 12, 20 they comprise means for fixing panels suitable for fixing Each panel to each other. In this embodiment, the means of panel fixing comprise one or more closing openings 64 in which the known locking lugs 66 can be attached of the second base panel 20. Figure 1 shows three sets of locking lugs 66 and corresponding closing openings 64. Alternatively, other fixing means may be used, such as a tail, to join the panels that form the opposite ends of semi-finished to configure a tubular structure.

Said semi-finished also comprises one or more corner arrangements 26, 28; 30, 32 that bind each other of articulated way the base panels 12, 20 with the respective side edges of adjacent end retention panels 22; 24. Each corner arrangement is substantially identical, by therefore, only the provision of corner 26. In this embodiment, the corner arrangement 26 comprises an anchor structure and one or more panels of bellows. Figure 1 shows that the bellows structure it comprises one or more panels, for example a first panel of bellows 38 and a second bellows panel 40. The anchor structure it can comprise one or several panels, for example a first panel anchor 34 and a second anchor panel 36. The first panel of anchor 34 is articulatedly attached to the second base panel 20 along the fold line 54. Said fold line 54 extends at an acute angle from line 48, and, optionally, a cutting line 55 extends from one end of the line of fold 54 to the free edge of the base panel 20 to separate the anchor panel 34 of the base panel 20. The second panel of anchor 36 is articulatedly attached to the first panel of anchor 34 along the fold line 56. Preferably, the fold line 56 ends at the intersection of the line of fold 54 with the fold line 48 and the free edge of the second side panel 18. The orientation of the fold lines 54, 56 allows the first and second anchor panels to fold in an overlapping arrangement described below. Preferably, the fold lines 54 diverge from the point of intersection to determine a triangular panel part.

The bellows structure is arranged so that the first bellows panel 38 is articulated to the second anchor panel 36 along the fold line 58, and It is also articulated to the second bellows panel 40 along the fold line 60. In turn, the second panel of bellows 40 is mutually linked articulated to an edge of the end retention panel 22 along the fold line 62. Panels 34, 36, 38, 40 comprising the provision of corner 26 are constructed and arranged in this way so that it separate from the second side panel 18 and the top panel 16. Preferably, an opening A is provided to separate the panels mentioned above in order to determine a opening to receive a tray, described in continuation.

Figure 2A shows an example of a item to be packed, for example a T tray substantially rectangular comprising a compartment for contain food products F, and a wing L that extends around at least a part of the perimeter of the tray T.

Going back to the construction of the box illustrated in figures 2B and 2C, tray T is placed in contact with the upper panel 16 with the wing L leaning on the face inside the upper panel 16. Next, the panels are raised retention 22, 24 folding corner arrangements 26, 28, 30, 32. Referring again to corner provision 26, the first anchor panel 34 folds along the line of fold 54 so that it is arranged in face contact relationship with the base panel 20. The folding operation additionally makes that the second anchor panel 36 be arranged in relation to face contact with side panel 18.

Preferably, the fold line 56 is disposes on the fold line 48 in a substantially relationship parallel with it. In addition, the folding operation causes the first bellows panel 38 fold out of alignment with the second anchor panel 36, and that end retention panel 22 and the second bellows panel 40 fold out of the alignment with the top panel 16, to automatically lift the end retention structure, as shown in the figure 2B.

The construction of the box is completed by making reference to figure 2C, according to which the side panels 14 and 18 fold out of alignment with the top panel 16 at along the fold lines 44 and 46 respectively. This action folding means that the second anchor panel 36 is arranged in relationship substantially in relation to face contact with the first bellows panel 38 along the fold line 58. In the present embodiment, the second anchor panel 36, and the first and second bellows panel 38 and 40 together with the fold lines 58, 60 and 62 are sized and arranged in angle so that the retention panel 22 is substantially perpendicular to the top panel 16. However, the second panel of bellows 40 can lean in towards the base of box 12, 20 changing the dimensions of the panels before mentioned.

Then the first and second fold panels 12 and 20 around article T and are arranged in contact with it, thus coupling the closing lugs 66 of the second base panel 20 in the corresponding closing openings 64 of the first base panel 12, to form a base structure compound. In this way the box is in its fully raised state and loaded, as illustrated in Figure 2C.

The second bellows panel 40 can cross the corner of upper panel 16. Opening A forms a groove 68 (Figure 2B) that allows the corner of the L wing to protrude through of it, to keep the tray in place. Provisions corner 28, 30 and 32 also fold similarly to the corner arrangement 26 by folding in directions indicated by arrow X.

The end retention structure is maintained instead because the fold line 56 is arranged on the fold line 48, the first anchor panel 34 folds simultaneously out of alignment with the second anchor panel 36. The first base panel 20 folds out of alignment with the side panel 18. This angled relationship between the first panel of anchor 34 and the second anchor panel 36 maintains the first panel bellows 38 in relation to contact with them. it's possible adjust the shape and angle of the end retention panel 22 and of the second bellows panel 40 according to the shape and configuration of the base and side panels. Advantageously, the structures of corner do not need to be glued.

Going back to the second form of embodiment of the present invention as illustrated in the figures 3 to 4B, equal reference numbers have been used for equal parts with the addition of the number "1".

Referring below to Figure 3, it shows a semi-finished 110 to form a box envelope The semi-finished 110 is similar to the semi-finished 10, but the upper panel 116 has rounded corners and, for therefore, it is adapted for trays of food products that They also have rounded corners. The rest of panels 112, 114, 118, 120, 122 and 124 and corner structures 126, 128, 130 and 132 are identical to the corresponding panels and structures of corner of the first embodiment and therefore is not It is necessary to describe semi-finished 110 in more detail. The Figures 4A and 4B show the folding procedure but without the Item presented in the box. It can be seen that the structures corner fold in an X direction as described previously, and the base panels are subsequently arranged in overlapping coupling so that closure lugs 166 are they engage with openings 164 in a similar manner.

Going back to the third form of embodiment of the present invention as illustrated in the figures 5 and 6A to 6B, equal reference numbers have been used for equal parts of semi-finished 10 of figure 1 with the addition of the number "2".

Referring in particular to Figure 5, it shows a semi-finished 210 to form a box envelope formed from cardboard or folding sheet material Similary. The semi-finished 210 comprises a first base panel 212, a first side wall panel 214, a top panel 216, a second side wall panel 218 and a second base panel 220 linked together in series along the lines of fold 242, 244, 246 and 248 respectively. Panels end retention 222 and 224 are articulated joined to the upper panel 216 along the fold lines 250 and 252 respectively. As in the first and second forms of embodiment, the first and second base panels 212, 220 they comprise suitable fixing means 264, 266 to form a composite base structure.

Said semi-finished also comprises one or more corner arrangements 226, 228; 230, 232 that join so articulated base panels 212 and 220 with the respective edges of adjacent end retention panels 222, 224 respectively. Each corner arrangement is substantially identical, therefore, will only be described in greater detail corner arrangement 226. In this embodiment, the corner arrangement 226 differs from corner arrangements 26 and 126 of the first two embodiments in which the bellows structure is provided with a single bellows panel 238.

The corner arrangement 226 comprises a anchor structure, which in this embodiment comprises a first anchor panel 234, a second anchor panel 236 and a bellows panel 238 folded together with each other along fold lines 256 and 258. The first anchor panel 234 is articulatedly attached to the base panel 220 along the fold line 254 and bellows panel 238 is attached so foldable to retention panel 222 along the fold line 260. Preferably, the fold lines 246, 258, 260 and 250 are intersect all this way in a corner of the top panel 216. The fold line 254 is in angular relation to the line fold 248 so that fold lines 256 and 258 are arranged in alignment with fold lines 248, 246 when the tray is mounted. Corner arrangement 226 determines a opening A between the panels that form the corner arrangement and the second side panel 218.

Returning then to the procedure of conformation of the box as illustrated in figures 6A and 6B and referring in particular to Figure 6A, which for the sake of a greater clarity shows the case shaping procedure without the contents of the box in place, the folding of Two of the four corner layouts. The procedure of folding is similar to the procedure described above for the First embodiment. It can be seen that the first panel anchor 234 and the second anchor panel 236 fold into X direction out of alignment with the second side panel 218 and the second base panel 220 in face contact relationship with the same. In this embodiment, the line of fold 256 is arranged on fold line 248, it is made that the fold line 258 is arranged on the fold line 246. A then the bellows panel 238 and the panel are made end retention 222 fold out of alignment with the upper panel 216 to form a retention structure of end that stays in place similar to that of the procedure described above.

The side panels 214 and 218 fold to then out of alignment with the top panel 216, and the base panels 212 and 220 also fold out of alignment with the side panels 214 and 218, and are arranged in relation to overlapped to form a tubular structure represented in the figure 6B. The base panels 212, 220 are fixed to each other by the fixing means, whereby the lugs of closure 266 in openings 264. Bellows panel 238 is formed for disposal in relation to contact with the contact panel side 236, and the fold line 260 contacts the side edge 219 of the second side panel 218 when the tubular structure

The trapezoidal shape of the retention panel 222 and of the second side panel 218, makes these panels lean inward towards the base of the box raised to keep the article in place because the wing cannot move in the Y or Z planes due to inclination, as shown in the figure 6B. Corner arrangements 228, 230 and 232 also fold similar to corner arrangement 226 by folding them into the directions indicated by the X arrows.

In other embodiments the bellows panel 238 can cross the corner of the upper panel 216. The opening A it forms a groove 268 that allows the corner of the wing L to protrude through it, to keep the tray in place. Whether requires that the box have a cuboid shape when raised, it would require adjusting the shape of the end retention panel 222 and of the side panel 218, as well as the shapes of the panels of the corner layout

Going back to the fourth form of embodiment of the present invention as illustrated in the figures 7, 8A and 8B, have been used in the same reference numbers equal for equal parts with the addition of the number "3".

Going back in particular to the Figure 7, there is shown a semi-finished 310 comprising a first base panel 312, a first side panel 314, a panel upper 316, a second side panel 318 and a second panel of base 320 joined together in an articulated manner along the fold lines 342, 344, 346, 348 respectively.

Retention panels 322 and 324 are attached articulated to the top panel 316 along the lines of fold 350 and 352 respectively. The first and second panels of base 312, 320 comprise fixing means similar to those that have been described above.

As in other embodiments, the corner arrangements 326, 328, 330, 334 mutually join articulated way the base and, in this embodiment the side panels, with the respective side edges of the end retention panels. Each corner layout is substantially identical, therefore, it will only be treated with greater detail the corner arrangement 326.

Corner arrangement 326 comprises a first anchor panel 334, a second anchor panel 336, and a panel of bellows 338. The first anchor panel 334 is attached so articulated to base panel 320 along the fold line 354. In this embodiment, the fold line 354 is extends substantially perpendicular to the fold line 348. The second anchor panel 336 is mutually bonded articulated to the first anchor panel along the line of fold 356, which in this embodiment is in line with the fold line 348. The second anchor panel 336 is attached in addition to bellows panel 338 along fold line 358. The second anchor panel 336 is mutually joined together. optionally articulated to side panel 318 along the line fold 357, which in this embodiment extends mutually with the fold line 354. The bellows panel 338. The bellows panel 338 is mutually linked articulated with the retention panel 322 along the fold line 360. In this embodiment the fold line 360 is an extension of the fold line 346. The fold lines 346, 360 and 350 and the extensions of the fold lines 357 and 358 converge in one corner of the top panel 316. The side contact panel and bellows panel 338 are formed to determine two sides of an opening A.

To build the box represented in the figure 8B, it can be seen in Figure 8A that the first anchor panel 334 and the second anchor panel 336 folds in contact relation of faces with the second base panel 320 and the second side panel 318 respectively, and the fold line 356 is disposed of this mode on fold line 348. This folding operation is identical to the one described above to make the retention panel 332 and bellows panel 338 fold out of alignment with upper panel 316 to form a structure of end retention.

Similarly, the tubular structure is formed around the article as shown in figure 8B. The first and the second base panel are fixed together to form a wall of compound base. As can be seen in Figure 8B, the panels sides 314 and 318, and retention panels 322 and 324 are substantially perpendicular to the composite base wall that It includes panels 312 and 320, and top panel 316. be understood, however, that in alternative types of embodiment the shapes of the panels can be varied, and the positions of the fold lines so that the box can lean in from the top towards the base.

It is planned that the box of any form of embodiment mentioned above can be shaped by a series of sequential folding operations that can be performed in a continuous production machine so that it is not required turn it or invert it to finish its construction. He folding procedure is not limited to the one described previously and can be varied according to the particular needs of manufacturing.

It will be understood that in all forms of previous embodiment, due to the fact that the bellows panel is fold out of alignment with the anchor structure, the panel anchor or each anchor panel can be retained in relation to Contact with the side panel. This prevents the corresponding end retention panel is moved out of its plane convenient in relation to the top panel once the box is raised, thus keeping the content inside the box. In addition, the openings provided in the corners of some of the embodiments of the invention provide the corners of the product contained in the box so that a movement is avoided unwanted of it.

It will be recognized that as used in the present memory, the terms used "superior" "base" "lateral" and "extreme" with respect to box and semi-finished box panels are terms relative and that the box formed from semi-finished can orient yourself again as necessary or as desired. Also I know recognize that instead of the base wall being formed from the mutually locked panels, you can rearrange the semi-finished box, which forms another wall such as a top wall or side wall from locked panels mutually. Any reference to an articulated joint shall not interpret that necessarily refers only to a single line folding: in fact it is provided that the articulated joint can be formed from one or more of the following lines, a dotted line, a frangible line or a fold line, without depart from the scope of the invention.

The present invention and its embodiments Preferred refers to an article holder that is formed to provide satisfactory stiffness for storing items such as a tray for food products but with a grade of flexibility The semi-finished shape minimizes the amount of cardboard required for the box. Items can be applied to support manually or by automatic machinery. Is anticipated that the invention can be applied to a variety of boxes or types of tray and is not limited to those of the flat tubular type, for example the flat tubular structure could be replaced by a box with longer sides and end panels to receive such items Like cans or bottles.

Claims (9)

1. Box constructed from cardboard or similar foldable sheet material intended to pack one or more items, for example a tray (T) of food products (F), comprising a plurality of walls to form a tubular structure that includes upper (16, 116, 216, 316) and base walls (12, 20; 112, 120; 212, 220; 312, 320), opposite side walls (14, 18; 114, 118; 214, 218; 314, 318) and one or more extreme retaining walls (22, 24; 122, 124; 222, 224; 322, 324), attached to one end of said upper wall in which the extreme retaining wall is disposed in its end retention position by means of an arrangement of corner panels (26, 28, 30, 32; 126, 128, 130, 132; 226, 228, 230, 232; 326, 328, 330, 332) comprising a first anchor panel (34; 134; 234; 334) articulated to the base wall, a bellows structure (38, 40; 138, 140; 238; 338) articulated to the end retaining wall and a second panel of an claje (36; 136; 236; 336) articulated to both the first anchor panel and the panel and the bellows structure, characterized in that the bellows structure (38, 40; 138, 140; 238, 338) and the second anchor panel (36, 136; 236; 336) are sized and placed for their arrangement in overlapping relationship with each other against an adjacent wall of the side walls (14, 18; 114, 118; 214, 218; 314, 318) and the first anchor panel is sized and positioned for folding in relation to the contact of faces with the base wall, achieving the relative positions of the first and second anchor panel and the bellows structure when the box is arranged in its tubular structure whereby the end retaining wall it is disposed in its end retention position. 2. Box according to claim 1, wherein the bellows structure (38, 40; 138, 140; 238; 338) comprises one or several bellows panels (38, 40; 138, 140; 238, 338). 3. Box according to claim 2, wherein the bellows structure (38, 40; 138, 140) comprises two panels of articulated bellows (38, 40; 138, 140), in which one of the panels bellows (38; 138) is attached to the second anchor panel (36; 136) and the other bellows panel (40; 140) is attached to the wall of extreme retention (22; 122). 4. Box according to claim 2 or 3, wherein the fold line (56; 156; 256; 356) between the first panel of anchor (34; 134; 234; 334) and the second anchor panel (36; 136; 236; 256) is arranged on the fold line (48; 148; 248; 348) between the adjacent side wall (18; 118; 218; 318) and the wall of base (20; 120; 220; 320). 5. Box according to any of the claims 2 to 4, in which the second anchor panel (36; 136; 236; 336) it is cut at least in part from the side wall adjacent (18; 118; 218; 318) and / or a part of the upper wall (16; 116; 216; 316) through an opening (A). 6. Box according to claim 5, wherein the opening (A) is formed to receive and retain a part outstanding (L) of the article (T). 7. Semifinished (10; 110; 210; 310) to form a box constructed from cardboard or a similar foldable sheet material comprising a first base panel (12; 112; 212; 312), a first side panel ( 14; 114; 214; 314), a top panel (16; 116; 216; 316), a second side panel (18; 118; 218; 318) and a second base panel (20; 120; 220; 320) linked together in series articulated manner, the upper panel also having at least one end retention panel (22, 24; 122, 124; 222, 224; 322, 324) articulated in an articulated manner thereto in which a corner arrangement (26, 28, 30, 32; 126, 128, 130, 132; 226, 228, 230, 232; 326, 328, 330, 332) comprising a bellows panel (38, 40; 138, 140 ; 238, 338) and an anchor structure (34, 36; 134, 136; 234, 236; 334, 336) joins the end retention panel to the first base panel, and when it is raised to form a fixed box the end retention panel in a raised state in which the pa The bellows nel is articulated to the end retention panel, and in which the anchor structure is articulated to the first base panel, characterized in that the anchor structure comprises a first anchor panel (34; 134; 2. 3. 4; 334) and a second anchor panel (36; 136; 236; 336), in which the first and second anchor panels can be arranged in face contact relationship with the first base panel (12; 112; 212; 312) and the first side panel (14; 114; 214; 314) respectively, and in which an opening (A) is provided between the anchor structure and the first side panel. 8. Semifinished (310) according to claim 7, in which the second anchor panel (336) is attached so articulated to the first side panel (318). 9. Semifinished (10; 110) according to the claim 7, wherein the bellows panel (40; 140), when raise the semi-finished to form a box, cross the corner adjacent upper panel (16; 116).