RU194978U1 - FOLDING BOX - Google Patents

Abstract

The box is made with a folding bottom from having valves and pairwise symmetrical walls pre-connected by a seam along the height of the walls of a flat corrugated cardboard blank. All four valve boxes forming a folding bottom are in the form of equally high trapezoid with a height of not less than a quarter and not more than half the length of a smaller box wall. The long side of each valve is a continuation of the corresponding box wall and is separated from it by an inflection line. Each valve forming a folding bottom in the workpiece with the apex of a smaller angle is oriented to the apex of the larger angle of the adjacent valve and, when folded, covers the adjacent valve from the outside in the region of the larger angle. The utility model provides minimal material consumption and does not require additional fastening means for connecting the bottom-forming elements. 2 s.p. f-ly, 8 ill.

Description

The utility model relates to the field of containers and packaging for storage and transportation of products and materials and can be used as an industrially manufactured, primarily disposable, disposable container for placement, transportation over long distances, followed by storage and sale of various food products, presented mainly in packaged form.

Corrugated cardboard boxes, boxes, show boxes are used daily in bulk, therefore, the amount of material spent on each packaging unit, determined by the design of the box for industrial mass production, as well as time and additional technical means, is important for packaging manufacturers and its consumers. and materials for transferring the box after the industrial production of the workpiece from a flat folded state to a volume state for filling with any product.

Boxes made of corrugated cardboard of a simplified design, made of one blank with cover and bottom valves, with a side seam formed by bonding the wall with glue or wire staples with a narrow docking valve with the formation of a closed shell, are widely known and distributed (see chart No. 0201 according to the FEFCO international catalog - European Federation of Corrugated Board Manufacturers, Belgium). To use the box for its intended purpose, the bottom-forming valves should be folded towards each other in pairs and fastened with brackets, glue or adhesive tape, material consumption, other things being equal, on the flap and bottom valves is determined by the width of the box, as a rule, the width of the valves with such a simple cutting pattern is half the width of the box. At the same time, there remains a need to use means for fastening valves and devices for using these means.

A folding carton box (see scheme No. 0711 according to the FEFCO international catalog), made of one flat blank and glued along the side seam, is known for a similar purpose. The side walls are combined along the bend lines of the material with four upper rectangular-shaped valves and four lower shaped-shaped valves with cutouts, protrusions and oblique sections that provide easy assembly of the box bottom by combining the protrusions and the corresponding cutouts in pairwise glued elements of the bottom valves and holding the bottom of the box in the assembled state due to the friction forces of the interaction of the contacting on the planes of the valves.

The disadvantages of this design include the increased material consumption due to the width of the valves forming a folding bottom, always greater than half the width of the box, and the need to make a rather complicated cut with subsequent gluing on a specialized gluing machine in the areas of the bend zones made on two valves forming bottom. In addition, this pre-glued box when folded has a thickness of five layers of material instead of the two standard ones of the previous design No. 0201 according to the FEFCO catalog, since the valve boxes forming the bottom of the valve in the initial position are inside the folded shell, which increases the volumes occupied by the boxes during transportation to the consumer . As a rule, such boxes of multilayer corrugated cardboard are used for packaging household appliances or thin single-layer cardboard for easy filling, and for organizing the movement and sale of mass products, simpler packaging is required, preferably with less consumption of basic material, auxiliary means and the most simplified production technology , transportation and application.

The closest in purpose and design are boxes according to schemes 0215-0217 of the FEFCO catalog, differing only in the design of the valves that close the box on top. The folding bottom of these boxes is formed without the use of adhesive tape or other means by four elements in the form of valves with curly cuts and protrusions. A valve having a characteristic protrusion, during assembly, comes into contact from above with three adjacent elements - valves that form a folding bottom, bends adjacent elements inward under the action of force, moves to the inner area of the box, latches and, under the action of elastic forces, returns to the plane of the folding bottom, after which is held in assembled condition with the formation of a lock that prevents the opening of the bottom when exposed to the bottom of the inner filling of the box.

The disadvantages of the closest analogue are the formation of a lock that keeps the folding bottom of the box from opening under the action of filling, requiring the manufacture of valves that form the bottom of the strip adjacent to the blank of the box walls, on average 20% wider than half the length of the smaller side of the box, like this provided by the IPC classifier B65D 5/22, which classifies boxes held assembled by one or more elongated sides that are connected to adjacent elongated sides.

The objective of the utility model is the improvement and development of modern group packaging used in trade.

The technical result of the utility model is to create a box construction with a folding bottom with a minimum material consumption for bottom elements in the manufacture of the box blank and not requiring additional means of fastening the bottom-forming elements made in the form of valves to assemble the bottom of the box.

The technical result is achieved by the fact that the box with a folding bottom is made of valves with cuts and bend lines and pairwise symmetrical walls pre-joined by a seam along the height of the adjacent walls of a flat corrugated cardboard blank, while all four valve boxes forming a folding bottom are in the form of equally high trapezoid with not more than half the length of the smaller box wall, the long side of each valve is a continuation of the corresponding box wall and is separated from it by a line bending each of the bottom flaps forming the foldable blank smaller vertex angle is oriented and is adjacent to the top of an adjacent larger angle valve and in the folded state covers the area of smaller angle adjacent valve outside in larger angle adjacent the valve.

The essence of the utility model is illustrated by drawings, where

in FIG. 1 shows a flat box blank with a folding bottom in the form of a reamer for a corrugated cardboard cut;

in FIG. 2 shows a box with a folding bottom on the bottom side in the initial position, the valves 1, 2, 3 and 4 forming the folding bottom are in the planes of the box walls;

in FIG. 3 shows a box with a folding bottom with valves 1 and 2 installed in the working position;

in FIG. 4 shows a box with a folding bottom with valves 1, 2, 3 installed in the working position before installing the last valve 4;

in FIG. 5 shows a box with a folding bottom in a state ready for loading;

in FIG. 6 shows an inside view of the mutual position of the bottom-forming valves in the folding bottom of the box;

in FIG. 7 shows a box with a folding bottom with valves 2 and 4 installed in the plane of the bottom;

in FIG. Figure 8 shows a box with a folding bottom oriented towards rigid packaged filling and a reduced valve width.

A box with a folding bottom is made of a flat billet (Fig. 1), divided by notches (solid lines forming the outer contour of the billet and the contours of the cuts) and bend lines (dashed lines) into sections forming the walls and valves of the box.

In FIG. 1, positions 1, 2, 3, 4 indicate the valves separated from the corresponding walls of the box 5, 6, 7, 8 by the inflection lines forming the collapsible bottom of the box. Valves 9, 10, 11, 12 are used to close the box on top. A single-layer flat billet of the box is preliminarily converted into a closed two-layer one-piece connection of the walls 5 and 8 using an adhesive seam or staples along a special valve 13, after which the box is ready to be converted from a folded flat layer into two layers into a three-dimensional state and forming a folding bottom from valves 1- 4.

Valves 1-4 and 9-12 have a width that does not exceed half the length of the smaller wall of the box and provide alignment with almost no gap forming a folding bottom and closing the box on top of the valves. Valves 1-4 are made in the form of equally high rectangular trapezoidal shapes, with the long side of each valve extending the corresponding box wall and separated from it by an inflection line, while the angles with a long trapezoid base are uneven, one angle is large and right in size or close to a straight line, and the second acute angle is obviously smaller than the first. The workpiece is made so that each valve with its apex of a smaller acute angle is oriented to a larger one - a straight line or close to a right angle adjacent to the long side of the adjacent valve (Fig. 1), thus, on the scan of the workpiece a repeating sequence of angles is formed on the long sides of the valves in size - larger, smaller, larger, smaller and so on. The lateral sides of the valves, forming sharp angles with the long side, are made according to the technologies accepted in the production by straight lines with the angular position tolerances corresponding to these technologies.

The magnitude of the smaller acute angles of the valves forming the collapsible bottom can be in the range from 30 ° to 70 °, however, it is rational to perform them in the region of 45 °, since an increase in the angle will make it difficult to assemble the bottom, and a decrease in this angle leads to the formation of unintended specially assembled bottom triangular openings that do not form at an acute angle of 45 °.

Large angles with the long side of the valve are performed in the range from direct to close to straight, reduced by 10 ° ... 15 °, that is, in the range of 75 ° ... 90 °. Such a decrease in the larger angle does not affect the ability of the assembled bottom to maintain a stable position, but somewhat reduces the force required to assemble the folding bottom. It is possible, in order to reduce the efforts when assembling the folding bottom, to carry out part of the contour area of the right angle of each valve with a deviation from the vertical, taking into account that this area during assembly of the bottom of the box determines the spatial rigidity of the assembled product and the preservation of the shape given during assembly of the box. The greater the deviation of the valve contour from the vertical, the more over a wide range the distortion of the shape of the folding bottom and, consequently, the section of the entire box from a rectangle to a rhombus is possible. Therefore, it is rational to carry out the valve region adjacent to the inflection line in a direction perpendicular to it, maintaining an angle close to 90 °, not exceeding the angle of deviation of the valve circuit from the vertical by more than 15 °, which makes the short side length shortened by about a quarter of the width on the external circuit of the valve valve. Such a reduction in the external short side of the valve reduces the required force for assembling the folding bottom and maintains sufficient valve area to provide the mutual holding force of the valves due to friction. The optimal values of the larger and smaller angles on the valves for a particular box with a folding bottom can be found when mining samples when starting the box in mass production.

Folding bottom formation can be accomplished in several ways.

To assemble the bottom without using any means of mechanizing the fastening of the valves, each valve is successively bent into the plane of the bottom along the inflection lines of each valve in the direction of the valve symmetrically located, making bends so that the acute angle of the bent valve covers a straight line or a larger angle of the valve already bent by the previous one. The direction of the circular movement of the valves forming a folding bottom, when installed from the working position, can be arbitrary and begin with any valve. When the valves 1, 2 are subsequently bent in a circular direction counterclockwise to the plane of the folding bottom, the folding bottom looks like that shown in FIG. 3. To close the power circuit, fastening the bottom assembled from valves 1, 2, 3 (Fig. 4), it is necessary to bend valve 4 according to the same scheme into the plane of the folding bottom as the previous valves, with a force exceeding the elastic reaction of valve 1 and partly of valve 3. In this case, the triangular part of valve 1 elastically bends into the inner space of the box already formed from the workpiece, passes the outer rectangular part of valve 4 into the inner space of the box, clicks and turns out to be, covering an acute angle from above with a rectangular inside the th part of the valve 4 coupled to it by the force contact, as shown in FIG. 5. The folding bottom, which is designed with such mutual orientation and force contacts due to the elastic forces of the interacting valves and the friction of the adjacent layers of corrugated cardboard, is stable and irreversible for returning to its original position without load in the absence of an action specially directed to this purpose and can withstand without breaking the load in case of loading internal content. A view of the folding bottom box in a ready-to-load state is shown in FIG. 5, and in FIG. 6 shows an inside view of the mutual position of the bottom-forming valves in the folding bottom of the box.

When using product packaging lines in classic boxes, the scheme of mechanized assembly of a box with a folding bottom looks similar to that used when assembling boxes made according to FEFCO 0201 schemes using adhesive tape and boxes according to FEFCO 0215-0217 schemes with figured elements forming a lock. In this case, valves 2 and 4 (Fig. 7) are bent towards each other in the plane of the folding bottom, after which valves 1 and 3 cover valves 2 and 4, valves 1 and 3 continue to be loaded with a force directed perpendicular to the plane of the folding bottom inside the box. As a result of elastic deformation of valves 2 and 4, valves 2 and 4 are bent from the plane of the folding bottom into the box, and valves 1 and 3 come with a characteristic click behind the plane of valves 2 and 4, forming a stable connection of the folding bottom valves (Fig. 5), assembled along the same pattern as for sequential bending of the valves according to the above-described ring scheme, when in the folding bottom the region of the acute angle of each valve covers the region of a right or near-right angle of the adjacent valve. The same principle of folding bottom assembly can be implemented in the case of the initial folding of valves 1 and 3, followed by snapping of valves 2 and 4 with the same result, but it is preferable that the packer mechanically assembled the folding bottom for the boxes accepted by the packer, which is already available to the packer.

Boxes with a folding bottom, designed to be filled in the form of rigid bags that preserve the shape of parallelepipeds - usually cereals and instant products are packed in such boxes - can be made with a reduced width of the valves forming a folding bottom, from a quarter to half the length of the smaller side of the box (Fig. . 8) with full preservation of the functionality, ensuring the solution of the technical problem and achieving the technical result of the utility model.

The implementation of the utility model was tested experimentally in the course of testing an experimental batch of boxes with a folding bottom, having dimensions in length, width and height of 245 × 135 × 200 mm, respectively, and made of corrugated three-layer cardboard with a thickness of 3 mm. The boxes were assembled from preforms pre-connected to the docking valve with a width of 30 mm, obtained by plotter cutting, the width of the folding bottom valves was both 67 mm and 33 mm, typical options for pre-connecting the box walls to the docking valve by gluing and staples were used. Used reamers of box blanks with a folding bottom with smaller valve angles of 45 °, and large 75 ° and 90 °. The loading of hard bottom with nominal, double and triple loads made in accordance with the claimed utility model of the bottom has shown that the box with the folding bottom is guaranteed to withstand filling, moving, stacking and transporting without breaking and opening the folding bottom using both full and open valves and half width.

As a result of testing, all the properties of the claimed utility model are fully confirmed, the claimed technical result is achieved. The folding bottom of the box is assembled by any of the three methods described in the description without the use of additional means of fastening the valves, and the material consumption for the manufacture of folding bottom valves is less than that of the closest analogue design.

Claims (3)

1. A box with a folding bottom made of valves and pairwise symmetrical walls pre-joined by a seam along the walls of a flat billet of corrugated cardboard, characterized in that all four forming the folding bottom of the valve box are in the form of equally high trapeziums with a height of at least a quarter and no more than half the length of the smaller wall of the box, the long side of each valve is a continuation of the corresponding wall of the box and is separated from it by an inflection line, each valve forming a folding bottom in the workpiece with an apex the lower angle is oriented toward the apex of the larger angle of the adjacent valve and, when folded, covers the neighboring valve from the outside in the region of the larger angle. 2. A box according to claim 1, characterized in that a larger angle of any valve forming a folding bottom is in the range from 90 ° to 75 °, and a smaller angle is 45 ° with a deviation in any direction of up to 15 °. 3. The box under item 1, characterized in that the preliminary connection of the workpiece along the seam is made with brackets.

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