MXPA97004080A - Improving a box for products - Google Patents

Abstract

The present invention relates to a cardboard box of the type formed of a single sheet counted and marked, and having a lower wall, lateral perades extending upwards from the lower wall, and the end segments of multiple sheets, comprising the improvement of: at least one of the end segments of multiple sheets consisting of an end wall hinged to the bottom wall and at least one additional segment consisting of an interior portion hinged to the end of the adjacent side wall and an outer portion hinged to the inner portion along a sloping hinge line, whereby the inner and outer portions when folded form a segment of leaflets that extend less than half the width of the box, and a stacking tab that extends upwards from the upper edge of at least one end segment of multiple sheets and which is formed by cut-out edges of the portions interiors and exteriors of the added segment

Description

UNR CñJfí PñRñ ME30RR PRODUCTS BACKGROUND OF THE INVENTION Flat sheets of corrugated cardboard have been used for many years as the starting material for forming boxes. The corrugated paper is generally referred to as a multi-ply sheet material consisting of two sheets of cladding bonded to an intermediate corrugated layer of cent, usually the corrugated box plant of today in dii est. located relatively close to the customer's base and includes a corrugating and laminating machine to form the carton and then, cutting machines, slotting machines and marker machines, and packaging printing machines, in line The coating and intermediate paper rolls have to arrive normal This is a one-piece type of tray in which one single piece of paper has to be cut and marked, usually from paper mills that tend to be located close to their sources of raw materials. corrugated cardboard to form a flat piece of wood, which is then to be made up of a four-sided and a bottomed floor.Often, closing ears must be designed for the one-piece style. designs with features that allow for hand-assembling in a facility of mutual use that others are designed for machine-assembly where the jointly-attached portions adhere together to form a (a). Most commonly, these boxes are used to store 'fruit and fresh products from the packaging and shipping to the retail level. Usually, when a particular product is unpacked, such as tomatoes, peaches, mangoes and the like, there is a typical size requirement in the sense that the volume of the box is determined in size to contain a certain amount of the pfOdwcto. r < It is also a resistance given the weight of the packaged product and the requirements of stacking, shipping and handling. Of course, the cardboard material provides part of the structural strength depending on the kind of paper used in its formation. Heavier paper grades provide greater resistance to stacking and re-venting. The structure of the box can add a lot to its strength properties. Typically, a package packed with products will contain an adequate weight to be handled by an individual. Such boxes will be generally rectangular and will have a variable height dimension that will vary from 7.62 to 30.48 cm. In addition, these boxes will be stacked normally for transport and storage. Given the basic requirement of size specified by the customer, it is then an effort to provide the structural strength of stacking with the optimum amount of corrugated cardboard. A typical well-known one-piece box design is one that has a bottom, the side walls hinged to the bottom and at least two end walls hinged to the bottom. To form a wall, the walls are bent forward so that they are pericular to the bottom and then connected to form the containment volume within the four walls. The variations in which locks are hinged to the upper boards of the upper walls of the side walls are well known and as a resistance to the Armenian api can be engoznar a second end wall to the upper edge of the first extreme wall to form after a double layer of cardboard thus increasing the strength of the api lamiente Some additional used features that are used in such boxes include, for example, additional segments hinged to the side edges of the end walls which are used to form inclined vertical posts on the corners and additional layers along the side walls to similarly increase the resistance to the ap. When even more stacking resistance is required, additional folding segments can be added to produce variations of three- or four-leaf end walls. When such boxes are providedIt is an objective to provide maximum strength to the api lamient using the minimum amount of material while at the same time all the characteristic features specified by the customer are provided, such as stacking tabs, hand holders, ventilation holes and the like. . It is an object of the present invention to provide a one-piece box sheet that uses reduced material with equal or increased resistance to stacking. Another objective will provide you with a box of multiple-sheet end walls using less material, which has r ' üStence equal or increased. Yet another objective is to provide a hidden stacking tab or part of an extreme multi-leaf construction with the sufficient structure to resist overfolding during use. These and other objects of the invention will become apparent upon reading the specification which follows in combination with the accompanying drawings.

BRIEF DESCRIPTION OF THE INVENTION Expressed briefly, the present invention is practiced by cutting and marking from a single sheet of cardboard a multi-sheet tray-type tray. Each end wall has a four-leaf construction including a two-blade opposed stacking tab. For greater strength a pole construction is provided in the corner together with a reinforcing segment extending down a side wall. Upper closure segments with openings therein are provided at each end for engaging with the stacking tabs that are to be disposed of.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view showing the box armed with its barbed locking ears. Figure 2 is a top plan view of the one-piece sheet after it has been cut and marked, but before it is formed in a formed ca. Figure 3 is an isometric view showing the box as it is being formed. Figure 4 is a view similar to Figure 3 showing the box in which an end segment has been assembled. Figure 5 is also a view similar to Figure 3, but showing both end segments after being formed and with the closing ears open to receive the product.

DETAILED DESCRIPTION OF THE PREFERRED MODALITY Referring first to Figure 1 there is illustrated a tray-like box generally with 10. It is a typical box in the sense that it has a pair of vertical exterior end walls 12, 14, a pair of relatively longer vertical side walls 16, 18. , and a lower wall 20. The side walls 16, 18 are hingedly connected to the lower wing 20 through the marked lines 22,? while the endowners 12, 14 are also hingedly connected to the bottom wall 20 to the marked lines 26, 28, (see figure 2). Extending outwards from the upper edges of the side walls 16, 18 are the closing ears 30, 3 ?, each hingedly connected to the marked lines 34, 36. A typical alternative «- < the embodiment of Figure 1 provides a separate closure member for covering an open top part. Although the type of product placed inside the box is not part of the invention, the currently described mode is particularly useful for packing fresh fruits and vegetables. Also, the modality described is for the manual assembly in the production center when it is ready for use. This is opposite to machine arming in which an automated equipment would bend and join the parts of [< t box (usually with adhesive materials) giving it a permanent box shape. In this case, as will become more apparent by following the description of Figure 2, the parts of the box are folded and interconnected manually using typical bends, folds and mechanical joints. Once it has been shaped as an open can, fresh fruits, agricultural products and others can be placed inside the walls of the box 10. Turning now to Figure 2, the flat sheet for the box 10 is generally indicated with 38. Typically, although not essential to the present invention, the material of the ego is corrugated cardboard in which a corrugated intermediate layer has facing sheets bonded thereto that form the three-layer planar sheet. In order to provide the resistance to the application, the corrugations extend from the upper part to the lower part as well as those skilled in the art. As described above, the lower wall 20 has four sections, connected in a hinged manner to its four straight lateral edges to form the walls of the reinforced box. Loosely connected to the outer end walls 12, 14 are the opposite inner end walls 40, 42. The respective hinge lines 44 are provided.46 to accommodate a two-ply layer of the cardboard material between the inner and outer end walls when they are bent to be adjacent to each other, i.e., the hinge lines 44, 46 are double wide marked lines to accommodate the thickness of two sheets. The height dimension of each inner wall is established so that its outer edge portions are against the corresponding portion of the surface of the inner part 20 thus creating a regular end segment of double sheets. Located centrally and laterally opposite within the lower part 20 is the slot 50, 52. A locking tab 54, 56 which operates together respectively, is externally dependent on the outer edge 48 of each inner end wall 40, 42. As noted, it is they commonly provide stacking tabs and the ears will be normal to the mind - >; receptacles in a box stacked in line up one of low. A pair of separate slots 58, 60 and 62, 64 are located on the bottom wall along the lines marked 26, 28. Each slot has a certain size to accept the Legueta extending into the slot. Provided along the outer edge of the inner end walls 40, 42 are pairs of opposing rectangular cut-outs 66, 68 and 70, 72 which are similarly sized to accept a stacking tab when similar boxes are stacked on top of each other . In each of the inner end walls 40, 42 are other additional segments hingedly connected thereto and having the same width. Segments 74, 76, 78, 80 will form inclined posts at vertically extending corners to increase stacking strength and segments 82, 84, 86, 88 will extend below the interior surface of their adjacent side wall. It should be noted from FIG. 2 that the lateral dimension of the inner end walls is lower than that of the outer end walls to provide the inclined posts at the corners. At each end of the side wall segment there are additional segments hingedly connected thereto < t The length of the marked lines 90, 92, 94, 96. Each segment is constituted by two portions, an interior portion 98, 100, 102, 104, respectively, and an exterior portion-106, 108, 110, 112 , respectively. The portions operating together are connected along an inclined marked line 114, 116, 119, 120, respectively. The interior portions are given certain sizes so that they can form another vertical reinforcement layer within the end, multi-leaf segments, each portion extending slightly less than the width of the box and having a height dimension slightly less than the height dimension of a corresponding outer end wall segment. The outer portions are given if only certain sizes and when folded 180 ° around their marked inclined line they form an additional segment of double sheet reinforcement to form part of the joint construction of the end walls. The double sheet segment will have cutouts formed therein by jointly handling the rectangular cutouts, each indicated with 122 and 124 < In order to accommodate a stacking tab projecting upwards through the slot 58, 60 and 62, 64 in the bottom wall 20. Provided in the respective pairs of inner and outer portions of the additional segments, there will be a tab stacked rapezoidally arranged stack of two sheets each indicated in Figure 1 with 126. Stacking tabs 126 are formed when the outer inner portions are bent 180 ° to form the aggregate segment of two-ply reinforcement. By intercepting each line marked inclined, there is a portion of cutouts 127 which serves to create a snap hook 129 when the box is formed. The hooks 129 are oriented inwardly and will act to lock the upper closing ears in place- The tabs 126 will be upward through the cutout 131 located along the double marked lines < , 4 4b. In the formation of the box from an old plane 38 (refer to Figures 3-5), the side walls can first be bent 90 ° upwards and then form the additional reinforcement segments by bending 180 °. Next, the double sheet segment is rotated 90 ° inward along the hinge lines of the end wall. The outer end walls are then bent upwards 90 ° to terminate in the two-ply reinforcement segments. Next, the inner end segment will have its two outer segments bent to form the indian post at the corner and the reinforcement segment along the bilateral wall. Finally, the inner end wall is locked in place by forcing the locking tabs into the corresponding grooves in the lower wall. Once the box is formed, the product can be introduced and, after filling, the upper closing ears are folded. Within each end of a closing ear there are 1 i slots, each indicated with 12B and a short slit, indicated each with 130, at the outer end of its slot. The grooves are engaged on the upper stacking upwardly extending portions and the grooves provide a secure locking engagement with the hooks on the respective tongue. Or those skilled in the art may experience variations to the preferred embodiment just described. It is intended that the appended claims include all such obvious and obvious modifications.

Claims (1)

NOVELTY OF THE INVENTION CLAIMS

1. - A cardboard box of the type formed of a single sheet cut and marked, and having a lower wall, side walls extending upwards from the lower wall, and the -egments of multiple sheets, consisting of the improvement of. at least one of the end segments of multiple sheets consisting of an end wall hinged to the bottom wall and at least one additional segment consisting of an interior portion hinged to the end of the adjacent side wall and an exterior-hinged portion to the inner portion along a sloping hinge line, whereby the inner and outer portions when folded 180 ° form a segment of two sheets that extend less than half the width of the box, and a tongue of apposition extending upwards from the upper edge of at least one end segment of multiple sheets and which is formed by cut edges of the inner and outer portions of the additional segment.