RU188839U1 - PACKING BOX, RESISTANT TO STREAMING AND UNPRESSABLE FOR LIQUID - Google Patents

Abstract

The invention relates to the preparation of a liquid-tight and leak-proof packaging box, as well as a packaging box made of it. The blank is solid and contains the surface (1) of the base, the surface (2) of the fold of the long sides of the box, the vertical surfaces (3) of the short side, the first corner fold (6) and the second corner fold (7) of the angular structure, and the inclined fold (18) between them. The essence of the utility model is that the packaging box blank contains a cone fold (21) between the fold surfaces (2) of the long sides of the box and the second corner fold (7), so that the fold line is inclined relative to the fold (22) between the base surface (1) and vertical surface (3).

Description

The objective of this utility model is a leak-proof and liquid-impermeable packaging box, as defined in the initial part of claim 1 of the formula of the utility model.

In the field of packaging, many different types of packages are known that have been developed for different purposes. The design of the package is determined primarily by its intended use, but when designing the package, other aspects related to its manufacture and use should also be taken into account. In most cases, the angular structures of packages, in particular, those that must be impermeable to liquids and resistant to leakage, are a problem point.

For example, liquid-tight and leak-proof packaging that can be stacked on top of each other is required in the food industry for packaging meat and fish. In addition, packaging for meat and fish should be made of hygienic materials, that is, the material must be approved for contact with fatty foods. In addition, boxes for meat and fish can be very rigid, since one package can have up to 20 kg of weight, and the boxes are usually folded together, usually in 10 layers. Consequently, another important issue is the structural rigidity of the packages and their resistance to compression.

According to the prior art, leak-resistant packaging made of expanded polystyrene or molded plastic, filled from above and stacked, are often used for storing and transporting meat. Such boxes require a lot of storage space prior to use and, therefore, incur additional costs. Also, discarding them after use is problematic. In addition, the materials used in production are not recyclable, therefore, from the point of view of environmental protection, the use of the packages described above is not environmentally friendly.

Liquid-tight packaging made from corrugated paperboard is also known in the art; one such solution is disclosed in utility model FI 10658. A solution provided with corner folds, essentially known in the art, is used in the above publication. This structure has a leak-resistant angle with integrated flaps of the lid, so that the stacking planes of the end are blocked in the opposing slots of the upper edge of the leak-proof corners. One disadvantage of this structure is the unreliability of the pressure lock. The friction of the valve separating the stacking planes is not enough, just as the specified valve does not have the necessary locking for fixing the structure; This is especially true for corrugated cardboard with slippery polyethylene terephthalate (PET).

A significant disadvantage of this solution is the liquid-impermeable angular structure at the right angle of the end. The specified angle is trying to loosen in the unfolded state due to several layers of cardboard at the specified end. Due to the above structure, they act as a spring in a corner, trying to push the box out of the corners. Since the valves separating the stacking planes do not have the necessary blockage, this causes deformation of the specified angle and even forms pressure to open the specified structure.

For the above reason, a significant problem of corrugated cardboard boxes with liquid-tight corners and provided with corner folds is the deformation of the end of the box to the outside due to the large weight of the boxes. As a result, when stacking another box on top, she tries to pin down the box below. In some solutions with a liquid-tight angle, the long sides are blocked by cardboard wedges between the end fold; However, this solution does not provide sufficiently tight locking of the long sides and, therefore, the free structure reduces the allowable load.

Liquid-tight solutions made of corrugated cardboard, filled from above, as well as better preserving form, are also used for storing and transporting food products with liquid contents, but in them the stacking planes of the upper parts are mechanically glued. This is a significant disadvantage since it requires a separate, expensive packaging machine. In the manufacture of packages, their economic efficiency is extremely important, and also, from a structural point of view, a functional connection and fixing of parts of packages.

The objective of this utility model is to obtain a solution with which you can eliminate the drawbacks of the prior art. With the solution to the utility model, you can get a packaging box that is completely impermeable to liquids and resistant to leakage. In this case, the packaging structure of the utility model remains impermeable to the liquid when it is fully loaded. In addition, said package retains its shape essentially unchanged, even though several layers are stacked on top of each other.

The invention relates to corrugated cardboard packages and their blanks that are mechanically or manually molded without an adhesive, impermeable to liquids and resistant to leakage from the inside, as well as moisture and liquid from the outside. These packages are stackable on each other, do not have flap caps that interfere with packaging, but instead have short shoulders for stacking.

More precisely, the utility model differs as indicated in the claims.

Further, the utility model is described in more detail by the example of an embodiment with reference to the accompanying drawings, in which:

FIG. 1 - packing box blank according to the utility model;

FIG. 2 - unfolded packing box according to the utility model;

FIG. 3 - preparation of the corner of the packaging box;

FIG. 4 - preparation of the corner of the packaging box;

FIG. 5 - the corner of the packaging box in expanded form.

The packaging box of the utility model is solid, leak-proof and liquid-impermeable packaging box made of corrugated cardboard, mechanically or manually molded without adhesive. According to FIG. 1 and 2, this box has a base surface 1, a foldable surface 2 long sides, a vertical side 3 of the short side, a short side stacking plane 4, a lower side 5 of the short side stacking plane 5, and corner corners 6 and 7 to obtain a liquid-tight corner structures. According to FIG. 1, the packaging of FIG. 2, made without adhesive mechanically or manually, is obtained from one extruded billet, and in this package the surfaces 2, 3, 4, 5, 6, 7 form a liquid-tight and leak-resistant structure. The corner folds 6 and 7 are bent against each other on the inner surface of the vertical surface 3, due to the inclined bend 18.

The oblique conical bend 21 between the folding surface 2 and the corner seam 7 is the essence of the utility model, this bend increases the rigidity of the end of the liquid-tight packaging box. This box becomes impermeable to liquid and resistant to leakage when said fold 22 between base surface 1 and vertical surface 3 is bent together with conical bend 21 between folding surface 2 and corner bend 7 and lower long side fold 20. The angle X between the tapered fold 21 and the angled fold 18 is 45-50 °, most preferably 47 °. Accordingly, the angle Y between the tapered fold 21 and the vertical fold 24 of said vertical surface 3 is 90-100 °, most preferably 94 °.

The inner end A of the inclined line of the tapered bend 21 is connected with a straight fold 22 between the surface 1 of the base and the vertical surface 3. The slope of the line of the tapered bend 21 at the outer end B is 5-20 mm relative to the indicated fold 22. Thus, the end surface is formed in the vertical direction in a tapered shape inclined towards the inside of the box, in this case the length of the box in the indicated upper part of the box is shorter than in the base part.

More precisely, therefore, the inner end A of the inclined bend line of the cone bend 21 refers to the inner corner located closest to the surface 1 of the base. The above angle connects at the junction point a straight fold 22 between the base surface 1 and the vertical surface 3 of the short side with a straight base fold 2 between the surface 2 of the base and the vertical surface 2 of the long side. The outer end B of the inclined bend line of the conical bend 21 refers to the connection point of the long sides 2 further from the base surface 1, the second bend lines 19 and the outer end B of the cone bend 21. The specified cone bend 21 between the inner end A and the outer end B is bent to form a slope inward in the direction of the long sides 2 of the box in such a way that the inclination of the line of tapered bend 21 at the outer end B, as indicated above, is 5–20 mm more inward relative to the fold 22 of end A.

In this way, a liquid-impermeable packaging box is obtained in which the tapering fold line 21 is inclined relative to the fold 22 between the base surface 1 and the vertical surface 3. The essence of the utility model is that with the help of the taper fold line 21, the tip surface is tapering vertical direction so that the upper part of the box is shorter than the lower part of the specified box in the direction of the long sides 2.

FIG. 2 shows a liquid-tight packaging box unfolded. Thus, the vertical surface 3 of the short side of the packaging box is made deviating in inclination towards the inside of the box, becoming essentially tapered using an inclined tapering bend 21 between the foldable surface 2 of the long sides of the box and the second corner fold 7. Thus, this structure is more stable when stacked boxes on top of each other. The conical structure, coupled with a liquid-tight angular structure, helps to hold the ends together in a more dense manner after unfolding, compared to a structure in a right angle, because the conical shape compacts the structure so that it becomes sufficiently tight.

In addition to the tapered bend 21, inclined in the direction of the packing box, hook locking devices 9 located on a horizontal plane relative to the specified surface 1 of the base are also the essence of the utility model. In this case, the packaging box blank comprises second folding surfaces 19 of the long sides and hook locking devices 9 acting as locking means made on the outer edges of said surfaces and a double fold 16 of the short side, as well as locking slots 11.

A liquid-impermeable packaging box for a utility model can be performed, if necessary, without hook locking devices 9, however, the best end result is achieved using a combination of tapered bend 21 and hook locking devices 9. In FIG. 1-5, the utility model provides for the second folding surfaces 19 of the long sides, while these folding surfaces have hook locks 9 on a horizontal plane separating the double end fold 16 and are locked in the locking slots 11. The locking is ensured when the hook locks pass through the locking slots 11 to the outside the boxes. They ensure the stability of the structure under pressure. In addition, the hook closures in the horizontal direction of the packaging box retain the slope of the vertical surface 3 of the short side, locked at an angle defined by a conical bend 21 when the short side is blocked in the locking slots 11.

In addition to the above, friction tongues acting as brake shoes of 12 corners ensure that the structure does not open inside the box; they block the double-folded shoulder 10 between surfaces 4 and 5. Thus, the liquid-tight packaging box is finally blocked when the fold 17 between the end sides 3 and 4 is bent and the tabs 13 are pushed into the slot 23 formed by the notches. These tongues also allow the formation of protrusions from them, for example, to facilitate carrying and handling the box. The cut sides of the 8 long sides are also the essence of the utility model, while the cut sides of the shape reinforce the structure of the long side already at the filling stage of the box, nevertheless, making it easy to fill the box. Additionally, the tongue 15 of a certain shape is made on the double-folded shoulder 10, with the said tongue allowing, for example, to secure a separate layer and hold this layer in its position in the packaging box.

According to FIG. 1-5, with full unfolding, the vertical surfaces of the 3 short sides, together with the conical folds 21, form an internal conical structure. When stacking liquid-tight packaging boxes on top of each other, the conical structure of the vertical surfaces 3 is clearly more stable than the structure at a right angle, represented in the technology damage. The conical shape of the utility model strengthens the structure in such a way that it becomes more stretched, then the conical structure, coupled with an impermeable corner structure for the liquid, holds the ends together more tightly after unfolding. The best result is obtained when securing the blocking with hook locking devices 9 on a horizontal plane relative to the plane of the surface 1 of the base, blocked in the locking slots 11.

The person skilled in the art will understand that the utility model is not limited to the embodiments presented and may be modified within the framework of the utility formula below.

Claims (6)

1. Resistant to leakage and impermeable to liquid box, formed from the surface (1) of the base, folding surfaces (2) of the long sides of the box, vertical surfaces (3) of the short side, so that the specified vertical surface (3) is bent in the vertical direction from the fold (22) between the vertical surface (3) and the surface (1) of the base, while the impermeable to the liquid angular structure is formed by bending the first corner bend (6) and the second corner bend (7) together from the inclined bend (18), distinguishing By the fact that the vertical surface (3) of the short side of the packaging box is formed by deviating in inclination to the inside of the box, becoming essentially conical with the help of an inclined conical bend (21) between the foldable surface (2) of the long sides of the box and the second corner seam (7). 2. Box under item 1, characterized in that the line of the conical bend (21) is inclined relative to the fold (22) between the surface (1) of the base and the vertical surface (3), so that with the help of the line of the conical bend (21) the end surface gets a cone-shaped shape inclined in the vertical direction towards the inside of the box, in this case the upper part of the box at the junction point of the long sides (2) further from the surface (1) of the base, the second fold lines (19) and the outer end (B) of the cone fold (21) are shorter in the direction of the long sides (2) than the inner end (A) n tapering fold line (21) closer to the base surface (1), with the end (A) connecting at the junction point a straight fold (22) between the base surface (1) and the vertical surface (3) of the short side with a straight fold (20 ) the base between the surface (1) of the base and the vertical surface (2) of the long side. 3. The box according to claim 1, characterized in that the horizontal hook locking devices (9), acting as locking means, are made on the outer edges of the second folding surfaces (19) of the long sides of the packaging box, while the said hook locking devices are blocked in the locking slits (11 ) short side. 4. A box according to claim 3, characterized in that the horizontal hook sealers (9) of the packaging box keep the slope of the vertical surface of the short side (3) blocked at an angle determined by a conical bend (21) when the short side is locked in the locking slots (11). 5. Box under item 1, characterized in that the friction tongues acting as brake shoes (12) are made on the outer edges of the first corner fold (6) and the second corner fold (7) of the angular structure of the packaging box, while the counter element said friction lugs is a double-bent shoulder (10) of the plane (4) of stacking the short side and the bottom side (5) of the plane of stacking. 6. Box under item 1, characterized in that the outermost side (8) of the foldable surfaces (19) of the long sides of the packaging box is cut, preferably in a curved shape, giving rigidity to the structure of the long side.

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