CN212448471U

CN212448471U - Folding leak-proof paper box

Info

Publication number: CN212448471U
Application number: CN202020851070.9U
Authority: CN
Inventors: 王佩斯; 王盛; 王琼; 沈孚
Original assignee: Zhejiang Yuhe Technology Development Co ltd
Current assignee: Zhejiang Yuhe Technology Development Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-02-02
Anticipated expiration: 2030-05-20

Abstract

A folding type leak-proof paper box is formed by folding a plane paper board, the paper board comprises a first side plate, a second side plate, a third side plate, a fourth side plate and a bottom plate which are used for enclosing and combining the paper box, the inner ends of the first side plate, the second side plate, the third side plate and the fourth side plate are all connected with a bottom plate, foldable sealing connecting plates are arranged between every two of the first side plate, the second side plate, the third side plate and the fourth side plate, the outer end of the first side plate is provided with an extended cover plate, the outer ends of the cover plate, the second side plate and the fourth side plate are provided with extended inserting plates, the outer end of the third side plate is provided with a fixed plate corresponding to the third side plate, the outer end of the fixed plate is provided with an extension plate, the cooperation of epitaxial plate and bottom plate, the interconnect department of first curb plate, second curb plate, third curb plate, fourth curb plate, bottom plate, fixed plate, epitaxial plate, picture peg all is equipped with the crease line.

Description

Folding leak-proof paper box

Technical Field

The utility model relates to the field of packaging, concretely relates to foldable leak protection carton.

Background

The existing paper box generally adopts a structure as shown in fig. 6, an inserting plate extending from a cover plate is positioned at the outer side of a side plate, and then is inserted into a socket arranged in the side plate through an inserting part arranged in the inserting plate, so that the relative position relationship of the cover plate in the paper box is fixed, and a surrounding structure is formed. However, the structure is fixed only by the inserting part which is usually made of paper, so that the stability is insufficient and the service life is short. The existing paper box does not have the leakage-proof effect, and the folding mode of the paper box with the leakage-proof effect is complex.

In addition, the inserting plate often has an outward turning acting force, the effect borne by the inserting part is improved, the service life is further shortened, and in the daily use process, once the inserting plate is turned outwards, the sealing performance of a product is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a foldable leak protection carton:

Preferably, the length value of the extension plate is greater than that of the 1/3 bottom plate, and the arrangement of the extension plate not only enhances the thickness of the side plate, but also improves the stability of the bottom plate.

Preferably, the sealing connection plate and the corresponding side plate form seamless sealing connection for improve the leakproofness between each side plate, the sealing connection plate includes two symmetrical set squares of integral type seamless sealing connection, two be equipped with between the set square and be used for folding crease line, two the set square outside is connected the curb plate that corresponds separately. In the existing paper box, the triangular plates corresponding to the side plates are mutually separated, only when the paper box is folded and formed, the triangular plates are adhered to the corresponding side plates by glue, whether the glue preparation is adopted in the mode can not carry out the three-dimensional forming of the paper box, and then the tightness between the two side plates of the paper box can not be maintained, and liquid can easily flow out from the gap between the two side plates, so that the paper box can not contain the liquid. And this application is when carton three-dimensional forming, because between two set squares and between set square and the corresponding curb plate be sealing connection, above-mentioned junction only has the crease line, consequently satisfies the sealed requirement of bottom completely, has showing the structural stability and the leakproofness that have improved the product.

Preferably, the inner surfaces of the triangular plates close to one sides of the first side plate and the third side plate and the inner surfaces of the corresponding side plates form bonding fit, the bonding effect improves the structural stability of the product, and the sealing performance of the first side plate and the box paper piece is effectively improved.

Preferably, the inner surface of the paperboard of the paper box is provided with a layer of waterproof membrane.

Preferably, the Y-direction edge of the second side plate or the fourth side plate is correspondingly connected with the Y-direction edge of the bottom plate, and the X-direction edge length of the second side plate or the fourth side plate is less than or equal to the X-direction edge length of the bottom plate, so that the folding and transportation of the carton are facilitated, and the portability is remarkably improved.

Preferably, the Y-direction edge of the second side plate or the fourth side plate is correspondingly connected with the Y-direction edge of the bottom plate, and the distance from the X-direction edge of the second side plate or the fourth side plate to the outer end of the corresponding inserting plate is less than or equal to the length of the X-direction edge of the bottom plate, so that the folding and the transportation of the carton are facilitated, and the portability is remarkably improved.

Has the advantages that: the design of the extension board unique to the product not only improves the thickness of the corresponding third side board, plays a role in strengthening, but also improves the overall sealing performance of the product, and even if the sealing connection board does not have a viscose between the side boards, the forming of the paper box can be completed, and the convenience is improved. The product can be simultaneously applied to the packaging box and the lunch box, and the folding method is simpler, has fewer steps and is convenient for forming the box body.

Drawings

FIG. 1 is a fully expanded schematic view of example 1.

FIG. 2 is a fully expanded view of embodiment 2.

FIG. 3 shows the flat half-spread state of example 1.

Fig. 4 shows the flat transportation state of example 1.

FIG. 5 is a schematic sectional view showing a three-dimensional molded state in example 1

Fig. 6 is a schematic sectional view of a prior art carton in a three-dimensional formed state.

1. A first side plate; 2. a second side plate; 3. a third side plate; 4. a fourth side plate; 5. a base plate; 6. a cover plate; 7. inserting plates; 8. a fixing plate; 9. an epitaxial plate; 10. a set square; 11. an opening part; 12. a first fold away area; 13. a second fold region; 14. a third fold region; 15. and (6) bonding.

Detailed Description

The present invention will be further described with reference to FIGS. 1-6 and examples 1-2.

Example 1: a folding type leak-proof paper box is formed by folding a plane paper board, the paper board comprises a first side board 1, a second side board 2, a third side board 3, a fourth side board 4 and a bottom board 5 which are used for enclosing and combining the paper box, the inner ends of the first side board 1, the second side board 2, the third side board 3 and the fourth side board 4 are all connected with the bottom board 5, and the folding type leak-proof paper box is characterized in that: folding sealing connection plates are arranged between every two first side plates 1, second side plates 2, third side plates 3 and fourth side plates 4, epitaxial cover plates 6 are arranged at the outer ends of the first side plates 1, epitaxial inserting plates 7 are arranged at the outer ends of the cover plates 6, the second side plates 2 and the fourth side plates 4, fixing plates 8 corresponding to the third side plates 3 are arranged at the outer ends of the third side plates 3, epitaxial plates 9 are arranged at the outer ends of the fixing plates 8, the epitaxial plates 9 are matched with the bottom plate 5, and crease lines are arranged at the interconnection positions of the first side plates 1, the second side plates 2, the third side plates 3, the fourth side plates 4, the bottom plate 5, the fixing plates 8, the epitaxial plates 9 and the inserting plates 7. The length value of the extension plate 9 is greater than that of the 1/3 bottom plate 5, and the arrangement of the extension plate 9 not only enhances the thickness of the side plate, but also improves the stability of the bottom plate 5.

The sealing connecting plate constitutes seamless sealing connection with the curb plate that corresponds for improve the leakproofness between each curb plate, sealing connecting plate includes the triangle 10 of two symmetries of integral type seamless sealing connection, two be equipped with between the triangle 10 and be used for folding crease line, two the curb plate that corresponds separately is connected in the triangle 10 outside. In the existing paper box, the triangular plates 10 corresponding to the side plates are mutually separated, only when the paper box is folded and formed, the triangular plates 10 are adhered to the corresponding side plates by glue, whether the glue preparation is adopted in the mode can not carry out the three-dimensional forming of the paper box, and secondly, the tightness between the two side plates of the paper box can not be maintained, and liquid can easily flow out from the gap between the two side plates, so that the paper box can not contain the liquid. And this application is when carton three-dimensional forming, because be sealing connection between two set squares 10 and between set square 10 and the corresponding curb plate, above-mentioned junction only has the crease line, consequently satisfies the sealed requirement of bottom completely, has showing the structural stability and the leakproofness that have improved the product.

The Y-direction edge of the second side plate 2 or the fourth side plate 4 is correspondingly connected with the Y-direction edge of the bottom plate 5, and the X-direction edge distance from the second side plate 2 or the fourth side plate 4 to the outer end of the corresponding inserting plate 7 is less than or equal to the X-direction edge length of the bottom plate 5, so that the folding and the transportation of the paper box are facilitated, and the portability is obviously improved.

Example 2: a folding type leak-proof paper box is formed by folding a plane paper board, the paper board comprises a first side board 1, a second side board 2, a third side board 3, a fourth side board 4 and a bottom board 5 which are used for enclosing and combining the paper box, the inner ends of the first side board 1, the second side board 2, the third side board 3 and the fourth side board 4 are all connected with the bottom board 5, and the folding type leak-proof paper box is characterized in that: folding sealing connection plates are arranged between every two first side plates 1, second side plates 2, third side plates 3 and fourth side plates 4, epitaxial cover plates 6 are arranged at the outer ends of the first side plates 1, epitaxial inserting plates 7 are arranged at the outer ends of the cover plates 6, the second side plates 2 and the fourth side plates 4, fixing plates 8 corresponding to the third side plates 3 are arranged at the outer ends of the third side plates 3, epitaxial plates 9 are arranged at the outer ends of the fixing plates 8, the epitaxial plates 9 are tightly attached to the bottom plate 5 in a matched mode, and crease lines are arranged at the connecting positions of the first side plates 1, the second side plates 2, the third side plates 3, the fourth side plates 4, the bottom plate 5, the fixing plates 8, the epitaxial plates 9 and the inserting plates 7. The length value of the extension plate 9 is greater than that of the 1/3 bottom plate 5, and the arrangement of the extension plate 9 not only enhances the thickness of the side plate, but also improves the stability of the bottom plate 5. The inner surface of the paper board of the paper box is provided with a layer of waterproof film.

The sealing connecting plate constitutes seamless sealing connection with the curb plate that corresponds for improve the leakproofness between each curb plate, sealing connecting plate includes the triangle 10 of two symmetries of integral type seamless sealing connection, two be equipped with between the triangle 10 and be used for folding crease line, two the curb plate that corresponds separately is connected in the triangle 10 outside. In the existing paper box, the triangular plates 10 corresponding to the side plates are mutually separated, only when the paper box is folded and formed, the triangular plates 10 are adhered to the corresponding side plates by glue, whether the glue preparation is adopted in the mode can not carry out the three-dimensional forming of the paper box, and secondly, the tightness between the two side plates of the paper box can not be maintained, and liquid can easily flow out from the gap between the two side plates, so that the paper box can not contain the liquid. And this application is when carton three-dimensional forming, because be sealing connection between two set squares 10 and between set square 10 and the corresponding curb plate, above-mentioned junction only has the crease line, consequently satisfies the sealed requirement of bottom completely, has showing the structural stability and the leakproofness that have improved the product. The inner surface of the paper board of the paper box is provided with a layer of waterproof film.

The inner surfaces of the triangular plates 10 close to the first side plate 1 and the third side plate 3 and the inner surfaces of the corresponding side plates form a bonding fit, and the bonding part 15 is shown in fig. 2, so that the structural stability of the product is improved by the bonding effect, and the sealing performance of the first side plate 1 and the box paper is effectively improved. An opening part 11 which is convenient to fold is arranged at the outer side of the joint of the two triangular plates 10.

For convenience of description, the present carton is classified into the following four states according to its folded state: first, the fully expanded state, as shown in fig. 1 or fig. 2, now assumes the flat paperboard configuration of the overall carton. Second, as shown in fig. 3, the flat cardboard is still in a flat state, and in the state shown in fig. 1 or fig. 2, the left and right sides of the flat cardboard, i.e., the second side panel 2 and the fourth side panel 4 and the corresponding sealing and connecting panels, are folded inwards to form the state shown in fig. 3. Thirdly, in the flat transportation state shown in fig. 4, in the state shown in fig. 3, the third folding region 14 is folded inwards, and then the first folding region 12 is folded inwards and folded on the third folding region 14, so as to form the product. This state is the transport state of this application in the transportation, is in folding platykurtic thickness and area this moment and all is less, very portable transportation. Fourthly, as shown in fig. 5, the section of the carton is in a three-dimensional forming state, and the carton is in a using state, and the sealing connecting plate and the corresponding side plate form seamless sealing connection, so that the bottom sealing performance of the carton is obviously improved, and the liquid leakage is prevented.

In the

above embodiment

1 or 2, the distances between the second side panel 2 or the fourth side panel 4 and the outer end of the corresponding insert panel 7 in the X direction are all less than or equal to the length of the bottom panel 5 in the X direction, and in fact, even if only the second side panel 2 or the fourth side panel 4 has the length of the X direction less than or equal to the length of the bottom panel 5 in the X direction, the transportation is facilitated, and the difference is that the former does not need to fold the insert panel 7 corresponding to the second side panel 2 or the fourth side panel 4 when the flat half-unfolded state shown in fig. 3 is adopted, thereby prolonging the service life of the packaging bag.

As shown in fig. 5, which is a schematic cross-sectional view of the carton in a three-dimensional formed state, the side panels in fig. 5 and 4 are slightly thickened to facilitate demonstration of the principles of the present application. Because the folded paper has the acting force tending to straighten, the fixed plate 8 in fig. 5 has the acting force turning inwards, the inserting plate 7 corresponding to the cover plate 6 in the enclosed state has the acting force turning outwards, and the opposite acting force just exists between the fixed plate 8 and the inserting plate 7, so that the sealing performance of the product is further improved, and the structural stability of the product is also improved by the mutual offset of the acting forces.

Epitaxial plate 9 in this application has the effort of upset downwards, and this effort just in time produces the technological effect of pushing down to bottom plate 5 to make bottom plate 5 tend to levelly and smoothly, avoid bottom plate 5 indent. In addition, the extension plate 9 is connected with the fixing plate 8, and the fixed friction force existing between the extension plate 9 and the bottom plate 5 enables the fixing plate 8 to generate outward turning acting force due to outward bulging, but the outward turning of the fixing plate 8 is further limited, and the fixing plate 8 is prevented from directly turning outwards against the acting force of the inserting plate 7 of the cover plate 6.

It is obvious that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. There is no need or no way to give poor examples of all embodiments. And that such obvious changes and modifications are within the scope of the present invention as defined by the appended claims.

Claims

1. The utility model provides a foldable leak protection carton, the carton is formed by a planar cardboard is folding, and the cardboard is including being used for enclosing to synthesize first curb plate (1), second curb plate (2), third curb plate (3), fourth curb plate (4), bottom plate (5) of carton, bottom plate (5), its characterized in that are all connected to the inner of first curb plate (1), second curb plate (2), third curb plate (3), fourth curb plate (4): first curb plate (1), second curb plate (2), third curb plate (3), fourth curb plate (4) all are equipped with folding sealing connection board between two liang, first curb plate (1) outer end is equipped with epitaxial apron (6), second curb plate (2), fourth curb plate (4) outer end all are equipped with epitaxial picture peg (7), third curb plate (3) outer end is equipped with fixed plate (8) that correspond with third curb plate (3), fixed plate (8) outer end is equipped with epitaxial board (9), epitaxial board (9) and bottom plate (5) cooperation, the interconnect department of first curb plate (1), second curb plate (2), third curb plate (3), fourth curb plate (4), bottom plate (5), fixed plate (8), epitaxial board (9), picture peg (7) all is equipped with the crease line.

2. A folding leak-proof carton as claimed in claim 1, wherein: the length value of the extension plate (9) is larger than the length value of the 1/3 bottom plate (5).

3. A folding leak-proof carton as claimed in claim 1, wherein: the sealing connecting plate and the corresponding curb plate constitute seamless sealing connection for improve the leakproofness between each curb plate, sealing connecting plate includes two symmetrical set-square (10) of integral type seamless sealing connection, two be equipped with between set-square (10) and be used for the folding crease line, two the curb plate that corresponds separately is connected in set-square (10) outside.

4. A folding leak-proof carton as claimed in claim 3, wherein: the inner surfaces of the triangular plates (10) close to one sides of the first side plate (1) and the third side plate (3) are in bonding fit with the inner surfaces of the corresponding side plates.

5. A folding leak-proof carton as claimed in claim 1, wherein: the inner surface of the paper board of the paper box is provided with a layer of waterproof film.

6. A folding leak-proof carton as claimed in claim 1, wherein: the Y-direction edge of the second side plate (2) or the fourth side plate (4) is correspondingly connected with the Y-direction edge of the bottom plate (5), and the X-direction side length of the second side plate (2) or the fourth side plate (4) is less than or equal to the X-direction side length of the bottom plate (5).

7. A folding leak-proof carton as claimed in claim 1, wherein: the Y-direction edge of the second side plate (2) or the fourth side plate (4) is correspondingly connected with the Y-direction edge of the bottom plate (5), and the X-direction edge distance from the second side plate (2) or the fourth side plate (4) to the outer end of the corresponding inserting plate (7) is smaller than or equal to the X-direction edge length of the bottom plate (5), so that the folding and the transportation of the carton are facilitated.