CN217576020U - Cut-parts and cutlery box - Google Patents

Abstract

The utility model discloses a cutting piece and a lunch box, wherein the cutting piece has an unfolding state and a folding state; in the unfolding state, the cutting piece is provided with a first splicing part, two second splicing parts, two third splicing parts, four connecting parts and four folding lugs which are positioned on the same plane and connected into a whole; in a folded state, the cut pieces form a box body with an opening, and the box body is provided with a box bottom, two opposite first side walls and two opposite second side walls; the box body is formed by a first assembling part; the first side wall is formed by the second assembling portion in a folded mode, the second side wall is formed by the third assembling portion in a folded mode, the connecting portion is attached to the second side wall, and the folding lugs are attached to the first side wall. The lunch box is formed by splicing the cut pieces. The utility model discloses, the box body that cut-parts were assembled wholly has good rigidity and bearing capacity.

Description

Cut-parts and cutlery box

Technical Field

The utility model relates to the field of packaging technology, concretely relates to cut-parts and cutlery box.

Background

With the increasing global environmental standards, the existing disposable plastic boxes are being converted into paper lunch boxes. At present, paper cutlery box mainly is through one or more drench the mutual amalgamation of membrane paper and form or bond into square or circular box body to in the inside adhesion thin layer processing of box body, hold in the box body and eat material back adhesion tectorial membrane and constitute the preservation box. Paper cutlery boxes require a basic oil-and water-repellent function, as well as good adhesion and high bearing strength. The existing square lunch box with paper outside on the market has certain anti-leakage function, but can only be made into a layer of structure, the structure of the folded angle splicing part is loose, a stable frame is not formed, the strength is insufficient, the square lunch box is easy to deform after being loaded with food, the original shape is difficult to keep, and the square lunch box is easy to leak in the transportation process. The existing double-layer paper-attached lunch box has incomplete paper assembling parts contacting with food, has no anti-leakage function, and is uneconomical and environmentally-friendly because of being formed twice by spraying glue. Although the existing paper bowl meets a certain anti-seepage function, the hidden danger of leakage due to process reasons exists because the bowl bottom and the bowl body are not complete paper sheets, and the circular shape not only occupies the volume, but also can not adapt to the placing requirements of various foods.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the above-mentioned defect or the problem that exist among the background art, provide a cut-parts and cutlery box, the box body that the cut-parts were assembled wholly has good rigidity and bearing capacity, and when the cut-parts were cut-to-size paper, the low grammes per square metre of accessible paper reached the bearing effect and the feel of high grammes per square metre of paper, has reduced the quantity of paper, and on the way in the transportation, can guarantee that the product is difficult for empting, saves occupation space simultaneously.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to the technical scheme, the cutting piece is provided with an unfolding state and a folding state; in the unfolded state, the cutting piece is provided with a first splicing part, two second splicing parts, two third splicing parts, four connecting parts and four folding lugs which are positioned on the same plane and connected into a whole; the first assembling part is rectangular, a first edge, a second edge, a third edge and a fourth edge which are sequentially connected are arranged on the periphery of the first assembling part, and the first edge and the fourth edge are connected end to end; the two second splicing parts are respectively arranged at the first edge and the third edge of the first splicing part, and the two third splicing parts are respectively arranged at the second edge and the fourth edge of the first splicing part; the second assembled part is symmetrical about a first line of symmetry parallel to the first edge, and the third assembled part is symmetrical about a second line of symmetry parallel to the second edge; the connecting part is arranged between the adjacent first assembling part and the second assembling part; each two folding lugs are arranged at two ends of a second assembling part; in the folded state, the cut pieces form a box body with an opening, and the box body is provided with a box bottom, two opposite first side walls and two opposite second side walls; the box body is formed by the first assembling part; the first side wall is formed by folding the second assembling portion, the second side wall is formed by folding the third assembling portion, the connecting portion is attached to the second side wall, and the folding ears are attached to the first side wall.

Based on the first technical scheme, the second technical scheme is further provided, in the second technical scheme, the second splicing portion is provided with a first folding wall and a second folding wall which are symmetrical about a first symmetry line, the third splicing portion is provided with a third folding wall and a fourth folding wall which are symmetrical about a second symmetry line, and the connecting portion is arranged between the adjacent first folding wall and the adjacent third folding wall; every two folding lugs are arranged at two ends of a fourth folding wall.

Based on the second technical scheme, the third technical scheme is further provided, wherein in the folded state, the connecting part is attached to the outer surface of the third folded wall, and the fourth folded wall is attached to the outer surface of the third folded wall and covers the connecting part; the folded lug is attached to the outer surface of the first folded wall, and the second folded wall is attached to the outer surface of the first folded wall and covers the folded lug.

Based on technical scheme three, still be equipped with technical scheme four, in technical scheme four, fourth folded wall hot pressing is laminated in the surface of connecting portion and third folded wall, second folded wall hot pressing is laminated in the surface of book ear and first folded wall.

Based on the fourth technical scheme, a fifth technical scheme is further provided, wherein in the fifth technical scheme, the connecting part comprises a first folded angle and a second folded angle, the first folded angle and the second folded angle are connected into a whole and have similar triangular characteristics, the second folded angle is shorter than the first folded angle, and a notch is formed at the connecting position of the third folded wall; the second folded angle surface is bonded with the first folded angle, the other surface is attached to the outer surface of the third folded wall, and the first folded angle is attached to the outer surface of the third folded wall.

Based on the second technical scheme, a sixth technical scheme is further provided, wherein in the folded state, the connecting part is attached to the inner surface of the third folded wall, and the fourth folded wall is attached to the inner surface of the third folded wall and covers the connecting part; the folding ears are attached to the inner surface of the first folding wall, and the second folding wall is attached to the inner surface of the first folding wall and covers the folding ears.

Based on the sixth technical scheme, a seventh technical scheme is further provided, wherein in the seventh technical scheme, the fourth folded wall is attached to the inner surfaces of the connecting portion and the third folded wall in a hot-pressing manner, and the second folded wall is attached to the inner surfaces of the folded lug and the first folded wall in a hot-pressing manner.

Based on the seventh technical scheme, the connecting device further comprises an eighth technical scheme, wherein in the eighth technical scheme, the connecting part comprises a first folded angle and a second folded angle, the first folded angle and the second folded angle are connected into a whole and are similar to a triangle, the second folded angle is shorter than the first folded angle, and a notch is formed at the connecting position of the third folded wall; one side of the second folded angle is bonded with the first folded angle, the other side of the second folded angle is attached to the inner surface of the third folded wall, and the first folded angle is also attached to the inner surface of the third folded wall.

Based on the second technical scheme, a ninth technical scheme is further provided, and in the ninth technical scheme, the width of the folded lug is gradually reduced along the direction close to the free end of the folded lug; the first folding wall, the second folding wall, the third folding wall and the fourth folding wall are all in an isosceles trapezoid shape; the included angles between the first side wall and the box bottom and the included angles between the second side wall and the box bottom are obtuse angles.

The technical scheme is ten, a cutlery box, its by any one of technical scheme one to nine cut-parts assemble and form, the cut-part is the waterproof and grease proofing paper of a facial film.

As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:

1. according to the first technical scheme, when the cut piece is in a folded state, the connecting portion is attached to the second side wall, the folding lugs are attached to the first side wall, the connecting portion pulls the first side wall, the folding lugs pull the second side wall, and the folding corners of the first side wall and the second side wall are tightly and stably connected, so that the first side wall and the second side wall form a strong support, the second assembling portion is folded along the first symmetrical line to form the first side wall of the box body, the third assembling portion is folded along the second symmetrical line to form the second side wall of the box body, each side wall of the box body is of a double-layer structure, the frame of the double-layer structure is stable, the second assembling portion can be attached to the folding lugs or the connecting portion when being folded and the third assembling portion is folded, and further stable connection is formed at four necessary folding corners of the box body; therefore, according to the box body assembled by the cut pieces in the technical scheme, the four side walls of the box body are of a double-layer structure, the folding corners of the adjacent side walls are locally reinforced, the whole box body has good rigidity and bearing capacity, when the cut pieces are cut paper, the bearing effect and texture of high gram weight paper can be achieved through low gram weight paper, and the using amount of the paper is reduced; the square or rectangular appearance can ensure that the product is not easy to topple over in the transportation process, and simultaneously saves the occupied space, thereby reducing the transportation cost.

2. In the second technical scheme, the connecting part is arranged between the adjacent first folding wall and the second folding wall, and two ends of one fourth folding wall are arranged on every two folding lugs, so that the second side wall is easily attached to the folding part of the connecting part, and the folding lugs are attached to the first side wall.

3. In the third technical scheme, during folding, the two second splicing parts and the two third splicing parts are erected, the corresponding four connecting parts are folded and attached to the outer surface of the third folding wall, the fourth folding wall is turned outwards and is attached to the outer surface of the third folding wall and covers the connecting parts, so that a second side wall is formed, then the folding lugs at the two ends of the fourth folding wall are respectively attached to the outer surfaces of the two adjacent first folding walls, the second folding wall is turned outwards and attached to the outer surfaces of the first folding walls and covers the folding lugs, so that a first side wall is formed, and folding is finished; therefore, in the technical scheme, the connecting part and the folding lug are completely hidden, the appearance is more attractive, the fourth folding wall covers the connecting part, the second folding wall covers the folding lug, four side walls of the box body are connected into a stable frame, and the bearing capacity is further improved.

4. In the technical scheme four, the wall hot-pressing laminating is folded in the third in the fourth surface and connecting portion for wall and the third of being folded are folded the wall and are connected the fuse together to the fourth, and the wall hot-pressing laminating is folded in the surface and the ear of folding of first wall to the second, makes the second fold the wall and is folded the wall and fold the ear fuse together with first wall, and four lateral walls of the in-process box body of fusing are stereotyped, non-deformable, and the frame that four lateral walls formed is more stable.

5. In the fifth technical scheme, the structure of the connecting part enables the first folding angle to be attached to the outer surface of the third folding wall, so that the connecting part is attached to the third folding wall more stably.

6. In the sixth technical scheme, during folding, the two second splicing parts and the two third splicing parts are erected firstly, the corresponding four connecting parts are folded and attached to the inner surface of the third folding wall, then the fourth folding wall is turned inwards to be attached to the inner surface of the third folding wall and cover the connecting parts, so that a second side wall is formed, then the folding lugs at the two ends of the fourth folding wall are respectively attached to the inner surfaces of the two adjacent first folding walls, then the second folding wall is turned inwards to be attached to the inner surfaces of the first folding walls and cover the folding lugs, so that the first side wall is formed, and folding is finished; it can know, among this technical scheme, connecting portion and book ear are hidden completely, and are more pleasing to the eye, and the wall covers connecting portion for the fourth, and the wall covers a ear for the second still makes four lateral walls of box body link into a stable frame, and bearing capacity further improves.

7. In the seventh technical scheme, the fourth wall heat-pressing laminating is in the internal surface and the connecting portion of the third wall of rolling over for the fourth wall and the third wall of rolling over and connecting portion fuse together, and the second wall heat-pressing laminating is in the internal surface and the ear of rolling over of first wall of rolling over, makes the second wall and first wall and ear fuse together, and four lateral walls of the in-process box body of fusing are stereotyped, non-deformable, and the frame that four lateral walls formed is more stable.

8. In the eighth technical scheme, the structure of the connecting portion enables the first folding angle to be attached to the inner surface of the third folding wall, so that the connecting portion is attached to the third folding wall more stably.

9. In the ninth technical scheme, the width of the folded lug is gradually reduced along the direction close to the free end of the folded lug, so that the folded lug is easy to attach; the contained angle of first lateral wall and second lateral wall and box bottom is the obtuse angle, and the accommodation space of box body is bigger, and easily piles up on the way in the transportation and place.

10. In the tenth technical scheme, the utility model simultaneously provides a meal box, this meal box adopts the cut-parts assembly to form, four lateral walls of box body all have bilayer structure, the dog-ear department of adjacent lateral wall all forms local enhancement, the box body wholly has good rigidity and bearing capacity, and keeps the integrality of box body internal paper and membrane, possesses good anti-leakage performance, makes the paper of low gram weight of accessible simultaneously, reaches the bearing effect and the feel of high gram weight paper, has reduced the quantity of paper; the square or rectangular appearance can ensure that the product is not easy to topple over in the transportation process, and simultaneously saves the occupied space, thereby reducing the transportation cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the cut-parts of the present invention in an expanded state;

FIG. 2 is a schematic view of the cut pieces of the present invention in a folded state;

fig. 3 is a schematic view of the process of making the cutting pieces into the box body.

Description of the main reference numerals:

a first fitting portion 10; a first edge 11; a second edge 12; a third edge 13; a fourth edge 14; a second assembling portion 20; a first folded wall 21; a second fold wall 22; a first line of symmetry 23; a third assembled portion 30; a third folding wall 31; a fourth folded wall 32; a second line of symmetry 33; a connecting portion 40; a first dog-ear 41; a second fold angle 42; a folded lug 50; a case bottom 01; a first side wall 02; a second side wall 03.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are preferred embodiments of the invention and should not be considered as excluding other embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the claims, the description and the drawings of the present application, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used to distinguish between different objects and are not used to describe a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" is used, which is to be understood broadly, that is, any connection mode without displacement relation or relative rotation relation between the two, that is, including non-detachably fixed connection, integrated connection and fixed connection through other devices or elements.

In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.

The utility model discloses a cutting piece, which has an unfolding state and a folding state, and in the unfolding state, referring to fig. 1, the cutting piece is provided with a first splicing part 10, two second splicing parts 20, two third splicing parts 30, four connecting parts 40 and four folding lugs 50 which are positioned on the same plane and connected into a whole;

the first assembling portion 10 is rectangular, a first edge 11, a second edge 12, a third edge 13 and a fourth edge 14 which are connected in sequence are arranged on the periphery of the first assembling portion, and the first edge 11 and the fourth edge 14 are connected end to end; the two second assembling portions 20 are respectively arranged at the first edge 11 and the third edge 13 of the first assembling portion 10, and the two third assembling portions 30 are respectively arranged at the second edge 12 and the fourth edge 14 of the first assembling portion 10; the second portion 20 is symmetrical about a first line of symmetry 23 parallel to the first edge 11, and the third portion 30 is symmetrical about a second line of symmetry 33 parallel to the second edge 12; the connecting portion 40 is provided between the adjacent first and second assembled portions 10 and 20; each two folding lugs 50 are arranged at two ends of one second assembling part 20;

in folded state, see fig. 2-3, the cut pieces form a box with an opening, the box having a box bottom 01, two opposite first side walls 02 and two opposite second side walls 03; the box body is formed by a first assembly part 10; the first side wall 02 is formed by folding the second assembly portion 20 in half, the second side wall 03 is formed by folding the third assembly portion 30 in half, the connecting portion 40 is attached to the second side wall 03, and the folding lug 50 is attached to the first side wall 02.

Specifically, the second assembled portion 20 is provided with a first folded wall 21 and a second folded wall 22 which are symmetrical about a first line of symmetry 23, the third assembled portion 30 is provided with a third folded wall 31 and a fourth folded wall 32 which are symmetrical about a second line of symmetry 33, and the connecting portion 40 is provided between the adjacent first folded wall 21 and third folded wall 31; two of the ears 50 are disposed at two ends of a fourth folding wall 32. Thus, the connection portion 40 is easily folded and attached to the second sidewall 03, and the folded lug 50 is attached to the first sidewall 02. In this embodiment, first wall 21, the second wall 22, the third wall 31 and the fourth wall 32 of folding are isosceles trapezoid, so, first lateral wall 02 and second lateral wall 03 are the obtuse angle with the contained angle of the box bottom 01, and the accommodation space of box body is bigger, and easily piles up on transit and place.

It will be appreciated that the first and second side walls 02, 03 of the box are of the same height, i.e. the first, second, third and fourth fold walls 21, 22, 31, 32 are all of the same height. In this embodiment, the first sidewall 02 has a longer length than the second sidewall 03.

The connecting part 40 comprises a first folded angle 41 connected with the first folded wall 21 and a second folded angle 42 connected with the third folded wall 31, the first folded angle 41 and the second folded angle 42 are connected into a whole and are similar to a triangle, the second folded angle 42 is shorter than the first folded angle 41 and forms a notch at the connecting part of the third folded wall 31; the connecting portion 40 is configured such that the first folded corner 41 can be attached to the third folded wall 31, so that the connecting portion 40 and the third folded wall 31 are attached more stably.

The width of the tab 50 is gradually reduced in a direction near the free end thereof to be easily attached to the first sidewall 02.

Specifically, the following two embodiments are provided after folding the cut pieces:

example 1

In the folded state, the connecting portion 40 is attached to the outer surface of the third folding wall 31, and the fourth folding wall 32 is attached to the outer surface of the third folding wall 31 and covers the connecting portion 40; the folded lug 50 is attached to the outer surface of the first folded wall 21, and the second folded wall 22 is attached to the outer surface of the first folded wall 21 and covers the folded lug 50.

In a specific embodiment, the second corner 42 is bonded to the first corner 41 on one side, and is bonded to the outer surface of the third folding wall 31 on the other side, and the first corner 41 is also bonded to the outer surface of the third folding wall 31. Since the first folding angle 41 also fits the outer surface of the third folding wall 31, the joint portion 40 fits the third folding wall 31 more firmly.

The box body manufacturing process is as follows:

when folding, the two second assembling portions 20 and the two third assembling portions 30 are erected, the corresponding four connecting portions 40 are folded and attached to the outer surface of the third folding wall 31 (fig. 3A), the fourth folding wall 32 is turned outwards to attach the fourth folding wall 32 to the outer surface of the third folding wall 31 and cover the connecting portions 40 (fig. 3B), so that the second side wall 03 is formed, then the folding ears 50 at the two ends of the fourth folding wall 32 are attached to the outer surfaces of the two adjacent first folding walls 21 respectively (fig. 3C and 3D), the second folding wall 22 is turned outwards to attach to the outer surfaces of the first folding walls 21 and cover the folding ears 50 (fig. 3E), so that the first side wall 02 is formed, and folding is completed (fig. 3F).

In a specific implementation, the folding can be achieved by an automated device, that is, two second assembled parts 20 and two third assembled parts 30 are erected by a mold, corresponding four connecting parts 40 are folded and attached to the outer surface of the third folding wall 31 by a sequential structure, the forming mechanism continues to turn the fourth folding wall 32 outwards and make the fourth folding wall 32 attached to the outer surface of the third folding wall 31 and cover the connecting parts 40, that is, the second side wall 03 is formed, then the forming mechanism attaches the folding lugs 50 at two ends of the fourth folding wall 32 to the outer surfaces of two adjacent first folding walls 21, and then turns the second folding wall 22 outwards and attaches to the outer surfaces of the first folding walls 21 and covers the folding lugs 50.

After the forming is completed, the transfer structure transfers the box body to the hot-pressing mechanism, the hot-pressing mechanism utilizes the inner and outer hot-pressing dies to completely fuse and shape the four side walls of the box body together, namely, the lamination is mainly hot-pressed lamination, the fourth folding wall 32 is hot-pressed and laminated on the outer surfaces of the connecting part 40 and the third folding wall 31, and the second folding wall 22 is hot-pressed and laminated on the outer surfaces of the folding lug 50 and the first folding wall 21. So for fourth wall 32 and third wall 31 and connecting portion 40 fuse together, make second wall 22 fuse together with first wall and discount ear 50, the four lateral walls of the in-process box body of fusing are stereotyped, non-deformable, and the frame that four lateral walls formed is more stable.

It can be known that, in this technical scheme, connecting portion 40 and folded ear 50 are hidden completely, and are more pleasing to the eye, and fourth folded wall 32 covers connecting portion 40, and second folded wall 22 covers folded ear 50 still makes four lateral walls of box body link into a stable frame, and bearing capacity further improves.

Example 2

In the folded state, the connecting portion 40 is attached to the inner surface of the third folding wall 31, and the fourth folding wall 32 is attached to the inner surface of the third folding wall 31 and covers the connecting portion 40; the folded lug 50 is attached to the inner surface of the first folded wall 21, and the second folded wall 22 is attached to the inner surface of the first folded wall 21 and covers the folded lug 50.

The second corner 42 has one surface bonded to the first corner 41 and the other surface bonded to the inner surface of the third folding wall 31, and the first corner 41 is also bonded to the inner surface of the third folding wall 31. Since the first folding angle 41 also adheres to the inner surface of the third folding wall 31, the adhesion between the connection portion 40 and the third folding wall 31 is more stable.

The box body manufacturing process is as follows:

when folding, the two second assembling portions 20 and the two third assembling portions 30 are erected firstly, the corresponding four connecting portions 40 are folded and attached to the inner surface of the third folding wall 31, then the fourth folding wall 32 is turned inwards and is attached to the inner surface of the third folding wall 31 to cover the connecting portions 40, so that the second side wall 03 is formed, then the folding ears 50 at the two ends of the fourth folding wall 32 are respectively attached to the inner surfaces of the two adjacent first folding walls 21, and the second folding wall 22 is turned outwards and is attached to the inner surface of the first folding wall 21 to cover the folding ears 50, so that the first side wall 02 is formed, and folding is completed.

In a specific implementation, the folding can be achieved by an automated device, that is, two second assembled parts 20 and two third assembled parts 30 are erected by a mold, corresponding four connecting parts 40 are folded and attached to the inner surface of the third folding wall 31 by a sequential structure, the forming mechanism continues to invert the fourth folding wall 32 and enables the fourth folding wall 32 to be attached to the inner surface of the third folding wall 31 and cover the connecting parts 40, that is, the second side wall 03 is formed, then the forming mechanism attaches the folding lugs 50 at two ends of the fourth folding wall 32 to the inner surfaces of two adjacent first folding walls 21, and then inverts the second folding wall 22 to be attached to the inner surface of the first folding wall 21 and cover the folding lugs 50.

After the forming is finished, the transfer structure transfers the box body to the hot-pressing mechanism, the hot-pressing mechanism utilizes the inner and outer hot-pressing dies to completely fuse and shape the four side walls of the box body together, namely, the lamination is mainly hot-pressed lamination, the fourth folding wall 32 is hot-pressed and laminated on the inner surface of the third folding wall 31 and the connecting part 40, and the second folding wall 22 is hot-pressed and laminated on the inner surface of the first folding wall 21 and the folding lug 50. So for fourth wall 32 and third wall 31 and connecting portion 40 fuse together, and second wall 22 fuses together with first wall and discount ear 50, and four lateral walls of the in-process box body of fusing are stereotyped, and non-deformable, the frame that four lateral walls formed is more stable.

It can be known that, in this technical scheme, connecting portion 40 and folded ear 50 are hidden completely, and are more pleasing to the eye, and fourth folded wall 32 covers connecting portion 40, and second folded wall 22 covers folded ear 50 still makes four lateral walls of box body link into a stable frame, and bearing capacity further improves.

In either embodiment 1 or embodiment 2, in the folded state of the cut piece, the connecting portion 40 is attached to the second side wall 03, the folded lug 50 is attached to the first side wall 02, the connecting portion 40 pulls the first side wall 02, and the folded lug 50 pulls the second side wall 03, so that the folded corners of the first side wall 02 and the second side wall 03 are tightly and stably connected, the first side wall 02 and the second side wall 03 form a strong support, the second assembled portion 20 is folded in half along the first symmetry line 23 to form the first side wall 02 of the box body, the third assembled portion 30 is folded in half along the second symmetry line 33 to form the second side wall 03 of the box body, so that each side wall of the box body has a double-layer structure, the double-layer structure frame is more stable, the second assembled portion 20 is attached to the folded lug 50 when folded in half, the third assembled portion 30 is attached to the connecting portion 40 when folded in half, further, the four folded corners of the box body are stably connected, and the structures of the folded lug 50 and the connecting portion 40 are hidden; therefore, according to the box body assembled by the cut pieces in the technical scheme, the four side walls of the box body are of double-layer structures, the folding angles of the adjacent side walls form local reinforcement, the whole box body has good rigidity and bearing capacity, the local reinforcement structures of the folding angles of the box body are hidden, the box body is more attractive, when the cut pieces are cut paper, the bearing effect and the texture of high gram weight paper can be achieved through low gram weight paper, and the using amount of the paper is reduced; the square or rectangular appearance can ensure that the product is not easy to topple over in the transportation process, and simultaneously saves the occupied space, thereby reducing the transportation cost. The included angle between the first side wall 02 and the second side wall 03 and the box bottom 01 is an obtuse angle, the accommodating space is larger, and the box bottom is easy to stack and place in the transportation process.

Example 3

A lunch box, which is formed by splicing the cut pieces in the embodiment 1 or the embodiment 2, wherein the cut pieces are waterproof and oilproof paper with one surface coated with a film. The lunch box is formed by splicing the cut pieces, the four side walls of the box body are of double-layer structures, the folding angles of the adjacent side walls form local reinforcement, the whole box body has good rigidity and bearing capacity, the local reinforcement structures of the folding angles of the box body are hidden, the lunch box is more attractive, the integrity of paper and films in the box body is kept, the lunch box has good anti-leakage performance, meanwhile, the bearing effect and the texture of high-gram weight paper can be achieved through low-gram weight paper, and the using amount of the paper is reduced; the square or rectangular appearance can ensure that the product is not easy to topple over in the transportation process, and simultaneously saves the occupied space, thereby reducing the transportation cost.

The description of the above specification and examples is intended to illustrate the scope of the invention, but should not be construed as limiting the scope of the invention. Modifications, equivalents and other improvements to the embodiments of the present invention or to the technical features of one of the assemblies described herein, which may be made by a person of ordinary skill in the art through logical analysis, reasoning or limited experimentation in light of the above teachings of the present invention or the above embodiments, are intended to be included within the scope of the present invention.

Claims (10)

1. A cut piece, characterized in that it has an unfolded state and a folded state;

in the unfolded state, the cutting piece is provided with a first splicing part (10), two second splicing parts (20), two third splicing parts (30), four connecting parts (40) and four folding lugs (50) which are positioned on the same plane and connected into a whole;

the first assembling part (10) is rectangular, a first edge (11), a second edge (12), a third edge (13) and a fourth edge (14) which are sequentially connected are arranged on the periphery of the first assembling part, and the first edge (11) and the fourth edge (14) are connected end to end; the two second assembling parts (20) are respectively arranged on the first edge (11) and the third edge (13) of the first assembling part (10), and the two third assembling parts (30) are respectively arranged on the second edge (12) and the fourth edge (14) of the first assembling part (10); the second portion (20) being symmetrical with respect to a first line of symmetry (23) parallel to the first edge (11), the third portion (30) being symmetrical with respect to a second line of symmetry (33) parallel to the second edge (12); the connecting part (40) is arranged between the adjacent first assembly part (10) and the second assembly part (20); each two folding lugs (50) are arranged at two ends of a second assembling part (20);

in said folded state, said cut pieces form a box with an opening, said box having a box bottom (01), two opposite first side walls (02) and two opposite second side walls (03); the box is formed by the first assembly (10); first lateral wall (02) are formed by the fifty percent discount of second concatenation portion (20), second lateral wall (03) are formed by the fifty percent discount of third concatenation portion (30), connecting portion (40) laminate on second lateral wall (03), fold ear (50) laminate in on first lateral wall (02).

2. A panel as claimed in claim 1, characterized in that said second portion (20) is provided with a first fold (21) and a second fold (22) symmetrical with respect to a first line of symmetry (23), said third portion (30) is provided with a third fold (31) and a fourth fold (32) symmetrical with respect to a second line of symmetry (33), said connecting portion (40) being provided between adjacent first and third folds (21, 31); every two folding lugs (50) are arranged at two ends of a fourth folding wall (32).

3. A panel as claimed in claim 2, characterized in that in said folded position said attachment portion (40) abuts the outer surface of the third fold wall (31), said fourth fold wall (32) abuts the outer surface of the third fold wall (31) and covers said attachment portion (40); the folding lug (50) is attached to the outer surface of the first folding wall (21), and the second folding wall (22) is attached to the outer surface of the first folding wall (21) and covers the folding lug (50).

4. A panel as claimed in claim 3, wherein the fourth folded wall (32) is heat-staked to the outer surfaces of the attachment portion (40) and the third folded wall (31), and the second folded wall (22) is heat-staked to the outer surfaces of the tab (50) and the first folded wall (21).

5. A panel as claimed in claim 4, characterized in that the attachment portion (40) comprises a first corner (41) integral with the first wall (21) and a second corner (42) integral with the third wall (31), the first corner (41) and the second corner (42) being integral and similarly triangular, the second corner (42) being shorter than the first corner (41) and forming a notch at the junction of the third wall (31); the one side of the second folded angle (42) is bonded with the first folded angle (41), the other side of the second folded angle is bonded with the outer surface of the third folded wall (31), and the first folded angle (41) is further bonded with the outer surface of the third folded wall (31).

6. A panel as claimed in claim 2, wherein in said folded condition said attachment portion (40) abuts an inner surface of the third folded wall (31), said fourth folded wall (32) abutting an inner surface of said third folded wall (31) and covering said attachment portion (40); the folding ear (50) is attached to the inner surface of the first folding wall (21), and the second folding wall (22) is attached to the inner surface of the first folding wall (21) and covers the folding ear (50).

7. A panel as claimed in claim 6, wherein the fourth folded wall (32) is heat-staked to the inner surfaces of the attachment portion (40) and the third folded wall (31), and the second folded wall (22) is heat-staked to the inner surfaces of the tab (50) and the first folded wall (21).

8. A panel as claimed in claim 7, characterized in that said connecting portion (40) comprises a first corner (41) integral with the first wall (21) and a second corner (42) integral with the third wall (31), the first corner (41) and the second corner (42) being integral and triangularly-like, said second corner (42) being shorter than the first corner (41) and forming a notch at the junction of the third wall (31); the second dog-ear (42) one side bonds with first dog-ear (41), and the another side is laminated with the internal surface of third dog-ear wall (31), first dog-ear (41) still laminate in the internal surface of third dog-ear wall (31).

9. A panel as claimed in claim 2, characterized in that the width of the tab (50) tapers in the direction towards its free end; the first folding wall (21), the second folding wall (22), the third folding wall (31) and the fourth folding wall (32) are all in an isosceles trapezoid shape; the included angles between the first side wall (02) and the box bottom (01) and the included angles between the second side wall (03) and the box bottom (01) are obtuse angles.

10. A lunch box assembled from the cut pieces of any one of claims 1-9, wherein the cut pieces are waterproof and oilproof paper with one surface coated with a film.

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