Paper-plastic combined heaven and earth cover packaging box

Abstract

The utility model discloses a paper-plastic combined heaven and earth cover packaging box which comprises a cover body and a box body, the cover body comprises a paper top plate and a plastic side ring arranged around the paper top plate; the box body comprises a paper part used for defining the side face and the bottom face of the box body and a plastic part fixed to the inner side of the paper edge of the paper part. The paper edge comprises an edge opening part and a face-to-face butt joint part; and the plastic side ring covers the upper end of the plastic part. Compared with an iron packaging box, the packaging box has better deformation resistance through combination of the paper board and the plastic, the overall strength of the packaging box is improved, the manufacturing cost of the packaging box is effectively reduced, patterns are conveniently printed on the paper board part, and the exquisite degree of the appearance surface of the packaging box is greatly improved; and the matching surface of the box body and the cover body is of a plastic structure, so that the matching degree is better, and the matching property and the opening comfort of the box body and the cover body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging boxes, in particular to a paper-plastic combined top and bottom cover packaging box. Background Art

[0002] Packaging boxes are widely used in various packaging to meet the function of placing items. Most of the special-shaped top and bottom covers on the market are made of iron sheets. Specifically, some patterns are printed on the iron sheets through the iron printing process, and then punched and stamped to form the finished product. Among them, iron sheet products have poor deformation resistance.

[0003] In the prior art, snacks such as black sesame balls are mostly packaged in iron hexagonal top and bottom lid packaging boxes (i.e. hexagonal iron cans). The packaging boxes are processed by punching and stamping, which has high material and labor costs and low production efficiency. The effect of the box body and the lid body is average. In addition, the iron printing process (i.e. the process of printing patterns on iron sheets) has average effect.

[0004] For example, if a paper hexagonal lid and top box is used to directly replace an iron hexagonal lid and top box, although it can reduce costs and achieve high-precision printing to improve the exquisiteness of the appearance, the edges of the box body and the lid of the paper box are soft, so the compatibility is poor. After multiple covers, the edges of the box body and the lid are prone to deformation and wear, thereby reducing the compatibility of the box body and the lid. In addition, since the entire packaging box is made of paper, its deformation resistance is poor. Among the lid and top boxes, the deformation resistance of polygonal paper boxes is particularly poor. Utility Model Content

[0005] The utility model aims to provide a paper-plastic combined top and bottom lid packaging box, which effectively reduces the manufacturing cost of the packaging box, improves the overall strength of the packaging box, and improves the coordination between the box body and the lid body and the opening comfort.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A paper-plastic combined top and bottom lid packaging box, comprising a lid body and a box body;

[0008] The cover body comprises a paper top plate and a plastic side ring arranged around the paper top plate;

[0009] The box body includes a paper portion for surrounding the side and bottom surfaces of the box body and a plastic portion fixed to the inner side of the paper edge of the paper portion; the paper edge includes an edge and a joint between the surfaces; the plastic edge ring covers the upper end of the plastic portion.

[0010] Through the combination of cardboard and plastic, compared with iron packaging boxes, it has better anti-deformation ability, improves the overall strength of the packaging box, and effectively reduces the manufacturing cost of the packaging box. The cardboard part is convenient for printing patterns, which greatly improves the exquisiteness of the appearance of the packaging box. The mating surface of the box body and the cover is a plastic structure, which has a better match and improves the coordination and opening comfort of the box body and the cover.

[0011] As a further solution of the utility model, the upper end of the plastic edge ring is fixed on the edge of the paper top plate, and the inner edge of the upper end thereof extends inwardly and is fixedly connected to the bottom of the paper top plate. The above solution is adopted to effectively fix the plastic edge ring to the paper top plate.

[0012] As a further solution of the utility model, the plastic part includes a plastic part at the edge; the plastic part at the edge is located at the upper end of the plastic part, is an edge ring, and is vertically arranged, and the plastic edge ring covers the plastic part at the edge; the lower end of the plastic part at the edge is fixed at the edge, and the inner edge of the lower end of the plastic part at the edge extends downward and is fixedly connected to the inner side wall of the paper part. The above solution is adopted to effectively fix the plastic part at the edge.

[0013] As a further solution of the utility model, the plastic part includes a side plastic part arranged at the joint of the side and the side, and the side plastic part is in a flat strip shape and spans the side and the side. The above solution is adopted to effectively connect the two side surfaces of the box body.

[0014] As a further solution of the utility model, the plastic part includes a bottom edge plastic part arranged at the joint of the side surface and the bottom surface; the bottom edge plastic part is strip-shaped and spans the side surface and the bottom surface. The above solution effectively connects the side surface and the bottom surface of the box body.

[0015] As a further solution of the utility model, when the gap at the joint of the two surfaces is large, the gap at the joint is filled with a filling plastic part. The above solution is adopted to better connect the plastic part with the paper part.

[0016] As a further solution of the utility model, the plastic part and the plastic edge ring are both injection molded.

[0017] As a further solution of the utility model, the surface of the paper top plate has an inner lining or coating, and the surface of the paper part has an inner lining or coating. The above solution is adopted to better fix the paper top plate and the plastic edge ring, and the plastic part and the paper part are better fixedly connected.

[0018] As a further solution of the utility model, the shape of the top and bottom lid packaging box includes polygonal, circular and irregular shapes.

[0019] As a further solution of the utility model, the shape of the top and bottom lid packaging box includes a hexagon; the paper portion includes a hexagonal bottom plate and two side plates fixed on opposite sides of the hexagonal bottom plate, and the two side plates are symmetrically arranged.

[0020] Beneficial effects of the utility model:

[0021] The combination of cardboard and plastic has better anti-deformation ability than iron packaging boxes, which improves the overall strength of the packaging box and effectively reduces the manufacturing cost of the packaging box. In addition, the cardboard part is easy to print patterns, which greatly improves the exquisiteness of the appearance of the packaging box.

[0022] In the utility model, the matching surfaces of the box body and the cover body are plastic structures, which have better matching degree, and improve the matching performance and opening comfort of the box body and the cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings:

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the cover body in the utility model;

[0026] Figure 3 It is a schematic diagram of the box body in the utility model;

[0027] Figure 4 It is a schematic diagram of the expansion of the paper portion in the utility model;

[0028] Figure 5 It is a schematic diagram of the plastic part in the utility model.

[0029] The accompanying drawings are marked as follows:

[0030] 10. Cover body; 11. Paper top plate; 12. Plastic side ring;

[0031] 20. Box body; 21. Paper portion; 211. Bottom plate; 212. Side plate; 22. Plastic portion; 221. Edge plastic portion; 222. Side plastic portion; 223. Bottom plastic portion; 224. Filling plastic portion. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] A paper-plastic combined top and bottom cover packaging box, such as Figure 1 As shown, it includes a cover body 10 and a box body 20. The shape of the top and bottom cover packaging box includes but is not limited to polygonal, circular and special-shaped.

[0034] like Figure 2 As shown, the cover body 10 includes a paper top plate 11 and a plastic edge ring 12 arranged around the paper top plate 11. The top of the plastic edge ring 12 is fixed on the edge of the paper top plate 11, and the inner edge of the top extends inward and is fixedly connected to the bottom of the paper top plate 11.

[0035] The manufacturing process of the cover body 10 is specifically as follows:

[0036] Printing pictures and texts on the paperboard. Performing surface treatment on the printed paperboard so that the surface of the paperboard has an inner coating or a coating. Die-cutting the paperboard to obtain a paper top plate 11. Putting the paper top plate 11 into an injection mold and performing plastic injection molding, and then injecting a plastic edge ring 12 at the edge of the paper top plate 11, that is, obtaining a paper-plastic combined cover 10.

[0037] Among them, since the surface of the paper top plate 11 has an inner lining or a coating, the plastic material of the plastic edge ring 12 is the same as the plastic material used to make the inner lining or the coating, so the plastic edge ring 12 and the paper top plate 11 are better fixedly connected together.

[0038] like Figure 3 As shown, the box body 20 includes a paper portion 21 for surrounding the side and bottom of the box body 20 and a plastic portion 22 fixed to the inner side of the paper edge of the paper portion 21. The paper edge includes an edge and a butt joint between the two surfaces. The plastic edge ring 12 covers the upper end of the plastic portion 22.

[0039] Specifically, the plastic part 22 is an integrated structure. Figure 5As shown, the plastic part 22 includes an edge plastic part 221 arranged at the edge, a side plastic part 222 arranged at the joint between the side and the side, a bottom plastic part 223 arranged at the joint between the side and the bottom, and a filling plastic part 224 for filling the gap at the joint between the faces. The plastic edge ring 12 covers the edge plastic part 221. The edge plastic part 221 is located at the upper end of the plastic part 22. The edge plastic part 221 is an edge ring and is arranged vertically. The lower end of the edge plastic part 221 is fixed at the edge, and the inner edge of the lower end of the edge plastic part 221 extends downward and is fixedly connected to the inner side wall of the paper part 21. The side plastic part 222 is in the shape of a flat strip, spanning the two side surfaces. The bottom plastic part 223 is in the shape of a strip, spanning the side and the bottom surface. When the gap at the joint between the faces is large, the gap at the joint is filled with the filling plastic part 224. In this embodiment, the side plastic portion 222 is fixedly connected between the edge plastic portion 221 and the bottom plastic portion 223 , and the filling plastic portion 224 is disposed outside the bottom plastic portion 223 .

[0040] The manufacturing process of the box body 20 is as follows:

[0041] Printing pictures and texts on the paperboard. Performing surface treatment on the printed paperboard so that the surface of the paperboard has an inner coating or a coating. Die-cutting the paperboard to obtain the corresponding semi-finished paperboard. Pre-forming the semi-finished paperboard by a robot to obtain a paper part 21; placing the paper part 21 into an injection mold and performing plastic injection molding, and then injecting a plastic part 22 at the edge of the paper part 21, so as to obtain a paper-plastic combined box body 20.

[0042] Among them, since the surface of the paper part 21 has an inner coating or a coating, the plastic material of the plastic part 22 is the same as the plastic material used to make the inner coating or the coating, so the plastic part 22 and the paper part 21 are better fixedly connected together.

[0043] In this embodiment, the shape of the top and bottom cover packaging box is hexagonal. Figure 4 As shown, the paper top plate 11 is hexagonal, and the cross section of the plastic edge ring 12 is hexagonal. The paper portion 21 includes a hexagonal bottom plate 211 and two side plates 212 fixed on opposite sides of the bottom plate 211, and the two side plates 212 are symmetrically arranged. The side edge plastic portion 222 is arranged at the joint of the two side plates 212. The bottom edge plastic portion 223 is arranged at the joint of the side plate 212 and the bottom plate 211. The cross section of the edge plastic portion 221 is hexagonal.

[0044] The utility model combines cardboard and plastic, which has better anti-deformation ability than iron packaging boxes, improves the overall strength of the packaging box, and effectively reduces the manufacturing cost of the packaging box. The cardboard part is convenient for printing patterns, which greatly improves the exquisiteness of the appearance of the packaging box. The matching surface of the box body and the cover body is a plastic structure, which has better matching degree, improves the coordination between the box body and the cover body and the opening comfort.

[0045] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of patent protection of the utility model.

Claims

1. A paper-plastic combined top and bottom lid packaging box, comprising a lid body (10) and a box body (20), characterized in that: The cover body (10) comprises a paper top plate (11) and a plastic edge ring (12) arranged around the paper top plate (11); The box body (20) comprises a paper portion (21) for surrounding the side and bottom surfaces of the box body (20) and a plastic portion (22) fixed to the inner side of the paper edge of the paper portion (21); the paper edge comprises an edge and a joint between the surfaces; the plastic edge ring (12) covers the upper end of the plastic portion (22).

2. The top and bottom lid packaging box according to claim 1, characterized in that: The upper end of the plastic edge ring (12) is fixed to the edge of the paper top plate (11), and the inner edge of the upper end thereof extends inwardly and is fixedly connected to the bottom of the paper top plate (11).

3. The top and bottom lid packaging box according to claim 1, characterized in that: The plastic part (22) comprises an edge plastic part (221) arranged at the edge; the edge plastic part (221) is located at the upper end of the plastic part (22), is an edge ring, and is arranged vertically, and the plastic edge ring (12) covers the edge plastic part (221); The lower end of the edge plastic part (221) is fixed at the edge, and the inner edge of the lower end of the edge plastic part (221) extends downward and is fixedly connected to the inner side wall of the paper part (21).

4. The top and bottom lid packaging box according to claim 1, characterized in that: The plastic part (22) comprises a side plastic part (222) arranged at the joint between the side surfaces; the side plastic part (222) is in the shape of a flat strip and spans across the side surfaces.

5. The top and bottom lid packaging box according to claim 1, characterized in that: The plastic part (22) comprises a bottom edge plastic part (223) arranged at the joint between the side surface and the bottom surface; the bottom edge plastic part (223) is in a strip shape and spans across the side surface and the bottom surface.

6. The top and bottom lid packaging box according to claim 1, characterized in that: When the gap at the joint between the two surfaces is large, the gap at the joint is filled with a filling plastic part (224).

7. The top and bottom lid packaging box according to claim 1, characterized in that: The plastic part (22) and the plastic edge ring (12) are both injection molded.

8. The top and bottom lid packaging box according to claim 1, characterized in that: The surface of the paper top plate (11) has an inner lining film or a coating film, and the surface of the paper portion (21) has an inner lining film or a coating film.

9. The top and bottom lid packaging box according to claim 1, characterized in that: The shapes of the top and bottom lid packaging box include polygonal, circular and irregular shapes.

10. The top and bottom lid packaging box according to claim 1, characterized in that: The shape of the top and bottom lid packaging box includes a hexagon; the paper portion (21) includes a hexagonal bottom plate (211) and two side plates (212) fixed on opposite sides of the hexagonal bottom plate (211), and the two side plates (212) are symmetrically arranged.

Images