LV11606B - Plane blank of box cover,method of producing thereof and box cover to have produced - Google Patents

Abstract

The invention relates to packaging, more precisely to folding boxes and their covers, which are created from a single blank and are used for cake packaging.The blank is made of cardboard sheet and consists of foundation (1) in the shape of an octagon (Fig. 1), which by edge (2) crease is combined with lateral sides (3,4,5,6,7,8,9,10) of the blank, between which could be found inside-foldable three-cornered areas (11). A crease (14) splits the area (11) in two sides (12,13). Line (14) is combined with cut lines (15,16) which form locking elements. The line (15) is drawn in parallel with foundation border, at 1/5th of the side height (till lateral of sides (4,6,8,10)), but line (16) goes further through until it meets the edge of the blank. The adjacent sides (3,5,7,9) have an external area (17) which could be folded over along border crease (18). In lateral sides (on 1/3rd length away from the external border and at an angle of 60 degrees) of the external area (19) cuts (20,21) are made for fixation of three-cornered area foldable part (12,13) with the help of cuts (15,16) which form locking elements. That allows to put parts, which are located behind cuts (20,21) and which are adjacent to external edge (19), between foldable three-cornered area (11) and corresponding area (3,5,7,9) of the side.<IMAGE>

Description

BACKGROUND OF THE INVENTION The present invention relates to packaging containers, in particular to folding cartons or lids thereof, which can be made from a single flat blank and used, for example, for wrapping cakes.

The box and its cover are known, for example, after the USSR aut. circ. No. 530828, ISK5 B65D 5/02, 1976, made of cardboard sheet, divided into zones by fold lines and cut lines to form the box base, front, back and side walls when the workpiece is folded . The disadvantage of the known box blanks, as well as the method of making the box itself, is that its central area is made up of flanges which are joined to each other by clamps, glue or other similar means, which makes the box and its cover more expensive and laborious.

Also known is a box and a similar cover design, for example, after the USSR aut. circ. No. 1742149, ISK5 B65D 5/02, 1992 (prototype), made of cardboard with marked folds and cut lines, dividing the workpiece into a central area and into the peripheral areas for forming the base of the box, its side and end walls for permanent bonding to the substrate. Other fold and cut lines are provided to form flanges, tongues, and cutouts to provide mutual fixation of the box lid walls in a vertically folded position by performing the box lid removal method. The disadvantage of this box cover blade, as well as the method of making the lid, is that it does not provide sufficient stability and security when forming the lid, since the walls of the made lid can easily separate from each other by tearing the tongue binder areas. This is due to the relatively small size of the reinforcing tongues. The box lid is also not particularly tailored for packing goods such as cakes.

SUMMARY OF THE INVENTION The object of the invention is achieved by the fact that a box cover blank made, for example, of a cardboard irregular polygon with at least two axes of symmetry, has a plurality of zones formed by cut and fold lines: a central zone which the bottom of the can lid cover, several edge areas that form when folded

The wall of the gearbox cover and the keys which, when folded, bind two adjacent peripheral zones to each other, according to the invention, further comprise triangular zones located between adjacent peripheral zones and divided into two parts along the median fold line, the keys being formed by means of intersections perpendicular to both edges of each of the two outermost zones, starting from the median line in the triangular areas and along the said intersection to the nearest corner of the central area, and through the outermost zones, oblique cuts are made on both sides of the outer areas.

According to the invention, the box cover blade comprises a polygonal, e.g., octagonal, central area, but the cut lines forming keys are perpendicular to each side of each other peripheral area at a distance of 1/5 of said lateral edge from the nearest corner. . In contrast, inclined edges on the outer edges of the outer areas are formed at a distance of 1/3 of their outer edges below an angle of 60 degrees.

A method of making a box lid from a flat blank, comprising forming the base of the lid and the walls by folding the peripheral areas of the blank vertically to the central area and locking them by means of keys, characterized in that the triangular zones located between the peripheral areas inwardly folding both parts of these zones along the median fold line as well as the cutter line of the key and folding the folded portions to the respective edge zone, whereby the outer zones associated with said peripheral zones are folded inward but parts of the outer zones, placed behind the cuts and the outer edge shall be inserted between the double-folded triangular area and the said outer area.

The box lid, made of a flat blank by this method, contains a polygonal, e.g., octagonal base and walls that are interconnected by triangular areas of the blank, folded along the median fold line and secured to it by a key. formed by incision lines in triangular zones perpendicular to each of the two sides of each of the two walls and to the nearest corner of the base, the outer areas having oblique cuts on both sides being folded into the inside of the lid and portions thereof; behind

-3cuts to the periphery of these zones are placed between the double folded triangular zone and the corresponding wall.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is explained in the accompanying drawings, in which: Fig. 1 is a top view of the proposed box cover blank, Fig. 2 is an enlarged cross-sectional view of a blank made of the blank shown in Fig. 1; 2 is an enlarged cross-sectional view of the side edge of FIG.

The box lid blank (Fig. 1) is made of cardboard in the form of an irregular polygon with at least two, for example, four symmetry axes. The workpiece comprises a central zone 1 having a corresponding polygonal shape, such as an octagonal shape. The folds 2 of the central blank 1 of the blank blank are permanently associated with the blank sections 3, 4, 5, 6, 7, 8, 9, 10 of the blank. Between said peripheral zones are formed triangular zones 11, which are divided into two parts 12, 13 along the fold, i.e., the median line 14, which passes through the cutter line 15. The cut lines 15 are formed perpendicular to each of the peripheral zones 4, 6, 8, 10. cut-off lines 16 are formed on both side edges and beyond, such as 1/5 of the said edges at a distance from the nearest corner of the central zone 1. The other peripheral zones 3, 5, 7, 9 are connected to the outer zones 17, which are separated from them by the fold lines 18. Inclined portions 20, 21, generally below 60 degrees, are formed on both sides of the outer areas 17, most preferably 1/3 of their length from the outer edge 19.

The method of making the lid of the box from the described flat blank is carried out in the following order.

First, the peripheral areas 3, 4, 5, 6, 7, 8, 9, 10 are folded vertically around the edges of the central area 1 of the box cover (Fig. 2), which are the fold lines 2 of the workpiece, and folded inwardly into the triangular area 11. by folding the two parts 12 and 13 of the area relative to the median or fold line 14 and using the key-forming cut lines 15 and 16. The folded parts 12 and 13 adhere to the respective edge area 3, 5, 7, 9. Then inward the outer zones 17, which are adjacent to said peripheral zones 3, 5, 7, 9, are folded around the fold lines 18, the portions of the outer zones 17 which are behind the cuts 20, 21 and the outer edges 19 of the zones are inserted between the double folded triangular zones 11 and

-4connected edge zones 3, 5, 7, 9.

Following the proposed method of making a box cover from a flat box cover blank, a cover (Figs. 2 and 3) is formed which contains a polygonal, e.g., octagonal base 1 and vertical walls 3, 4, 5, 6, 7, 8, 9. ,

10. The box lid walls are formed from the edge areas of the workpiece, which are interconnected by triangular zones 11 folded along the median fold line 14 and bounded by respective walls 3, 5, 7, 9. The walls are fixed to each other in a vertical position with keys formed by cut lines 15 in triangular zones 11 perpendicular to both sides of adjacent walls 4, 6, 8, 10 and by additional cut lines 16 formed on both sides of said walls to the nearest corner of base 1. The outer areas 17 of the lid blank, which are associated with respective lid walls 3, 5, 7, 9 and have oblique cuts 20, 21 on both sides thereof, are located inside the lid and comprise folded triangular areas 11 but portions of outer areas 17, located behind the notches 20, 21 and extending to the outer edge 19, are inserted between the double folded triangular area 11 and the corresponding wall 3, 5, 7, 9.

Once all the walls have been secured, the lid of the box is ready to be mounted on the box.

The proposed flat lid blank and the method of making the lid of the box can be used in industrial production of cake lids.

Claims (12)

INVENTION FORMULA 1. A flat blank for a box cover made, for example, of cardboard in the form of an irregular polygon, with at least two axes of symmetry, formed in said polygon by means of cut and fold lines: - the central zone (1) which, when folded, forms the base of the lid, - a plurality of peripheral zones (3, 4, 5, 6, 7, 8, 9, 10) which, when folded, form the walls of the lid, - the keys which, when folded, bind two adjacent outer zones to one another, differing in that said polygon: - additionally formed triangular zones (11) located between adjacent peripheral zones and divided into two parts (12, 13) along the median fold line (14), -the keys are formed by cut lines (15) executed perpendicular to both edges of each second edge area (4, 6, 8, 10), starting from the median line (14) in triangular zones (11 \ to said edges, with said edge) by cutting lines (16) executed to the nearest corner of the central zone (1) and by outer zones (17) having oblique cuts (20, 21) on both sides and connected to the other peripheral zones (3), 5, 7.9). Flat box blank according to claim 1, characterized in that it comprises a central area (1) of polygonal shape, such as an octagon. The flat lid of the canister cover according to claim 1 or 2, characterized in that the cut lines (15) which form the keys and are perpendicular to the two lateral edges of each second peripheral area (4, 6, 8, 10). , are formed at a distance of 1/5 of these lateral sides from the nearest corner of the central area. The flat lid of the box cover according to any one of the preceding claims, characterized in that the oblique cuts (20, 21) on the lateral edges of the outer areas (17) are formed at a distance of 1/3 of their length from the outer edge at an angle of 60 degrees. A method of making a box lid from a flat blank according to any one of the preceding claims, comprising forming the lid base and walls by bending the peripheral areas of the blank (3,4,5, 6, 7, 8, 9.10) vertical to central The two zones (1) and their interlocking by means of keys are characterized in that the triangular zones (11), which are located between the peripheral zones, are folded inwards, folding the two parts (12, 13) of this zone along the median the fold line (14) as well as the key cut lines (15) and allowing the folded 5 portions of the respective edge area (3, 5, 7, 9), wherein the outer areas (17) associated with said peripheral areas are folded inwardly, and the outer areas that are behind the incisions (20, 21), and the outer edge (19) is inserted between the double folded triangular zones (11) and said peripheral zones (3, 5, 7, 9). 6. A box lid made of a flat blank according to any one of claims 1 to 4 by the method described in claim 5, characterized in that it contains a polygonal, e.g., octagonal, shaped base (1) and walls (3, 4, 5, 6, 7, 8, 9, 10) connected to one another by the triangular zones (11) of the workpiece, folded along the median fold line (14) and bound to the respective wall (3, 15, 7, 9), whereby they are secured by locking means formed by cutting lines (15) in triangular zones (11) perpendicular to each side wall of each second wall (4, 6, 8, 10), and by means of additional cutting lines (16) formed on the edges of said walls (4, 6, 8, 10) to the nearest corner of the base, outer areas (17) having oblique edges on both sides thereof The 20 notches (20, 21) are folded inside the lid, but portions of the outer zones behind the notches to the outer periphery of these zones (19) are inserted between the double folded triangular zone and the corresponding wall (3, 5, 7). , 9).