CN213832446U

CN213832446U - Seamless paper box

Info

Publication number: CN213832446U
Application number: CN202022277195.8U
Authority: CN
Inventors: 刘培华; 何红武
Original assignee: Wuhan Chuangxinyuan Packaging Co ltd
Current assignee: Wuhan Chuangxinyuan Packaging Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-07-30
Anticipated expiration: 2030-10-14

Abstract

The utility model relates to a seamless paper box relates to carton manufacturing field, and it includes both ends open-ended square barrel, be equipped with first crease between two adjacent faces of barrel, the both ends of barrel respectively are equipped with four folded plates, adjacent two the folded plate is contradicted each other, the folded plate is located between two adjacent first creases, be equipped with the second crease between folded plate and the barrel. Two adjacent folded plates of this application are contradicted each other, and the four corners department gap of the carton of final formation is little.

Description

Seamless paper box

Technical Field

The application relates to the field of carton manufacturing, in particular to a seamless carton.

Background

Cartons are widely used in the field of packaging, and are mainly used for loading articles, and there are corrugated cartons, single-layer cartons, and the like depending on the materials used.

A prior chinese patent application No. CN200310120677.0 discloses a carton structure, which includes a side wall portion and two lid portions, each of which is connected to the side wall portion. Each cover portion comprises a first outer cover and a second outer cover. The first outer cover is connected with the side wall part and is provided with a first joint part; the second outer cover is also connected with the side wall part and forms a second joint part thereon; the first joint part is jointed with the second joint part to ensure that the carton structure is rectangular.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: and a gap is reserved between every two adjacent upper cover parts.

SUMMERY OF THE UTILITY MODEL

The application provides a seamless carton, two adjacent folded plates conflict each other, and the four corners department gap of the carton of final formation is little.

The application provides a seamless paper box adopts following technical scheme:

the utility model provides a seamless paper box, includes both ends open-ended square barrel, be equipped with first crease between two adjacent faces of barrel, the both ends of barrel respectively are equipped with four folded plates, adjacent two the folded plate is contradicted each other, the folded plate is located between two adjacent first creases, be equipped with the second crease between folded plate and the barrel.

Through adopting above-mentioned technical scheme, traditional carton needs the fluting in the manufacture process compared, contradict each other between two adjacent folded plates of this scheme, turn over a 90 degrees backs towards the barrel center when the folded plate, the clearance of the four corners department of the carton of formation is less, the less spare part is difficult for spilling from the gap of carton four corners department, this scheme does not have the fluting operation simultaneously, the leftover bits that also can not have the fluting production, raw and other materials are utilized very abundant to a certain extent, this one step of operation of waste recycling has also been subtracted, the cost of handling equipment has been saved for the enterprise.

Preferably, the barrel is provided with a notch at the opening, one end of the notch is located at the end of the first fold, and the other end of the notch faces to the other opening of the barrel.

Through adopting above-mentioned technical scheme, the incision that sets up at the opening part of barrel when two adjacent folded plates are folded 90 degrees, has the incision as the buffering, and the difficult extrusion deformation of handing-over department of barrel and two folded plates.

Preferably, the slits are located on both sides of the barrel where the length is longer.

By adopting the technical scheme, the surface area of the side face with longer cylinder length is larger, and the influence of the arranged notch on the side face is smaller.

Preferably, the notch is arranged obliquely, and one end of the notch, which is far away from the first crease, extends towards the middle of the side surface of the barrel.

Through adopting above-mentioned technical scheme, first crease setting is kept away from to the notched other end, avoids the incision to split open along the reverse of first crease in the use, and consequently this scheme is kept away from the one end of first crease with the incision and is extended towards barrel side middle part, can play the effect that the folded plate of being convenient for turned over and turn over, can also make notched length difficult for increasing to a certain extent.

Preferably, the included angle between the notch and the first fold is 15-30 degrees.

By adopting the technical scheme, the included angles between the notches and the first crease lines are 15-30 degrees, so that when the four folded plates at the end part of the barrel body are folded towards the center of the barrel body for 90 degrees, the four folded plates do not interfere with each other, the small gaps between the folded plates and the corners of the carton formed by the folded plates and the barrel body can be reduced, and small articles are not easy to leak.

Preferably, the side length of the side of the two folded plates close to each other is larger than one half of the width of the cylinder body and smaller than the width of the cylinder body.

By adopting the technical scheme, when the side length of the folded plate is less than half of the width of the cylinder, after the two oppositely-arranged folded plates at the opening of the cylinder are folded for 90 degrees, a gap is formed between the two oppositely-arranged paperboards, finally, a hole is left at the bottom of the carton, the bottom of the carton is not completely sealed, and articles in the carton are easy to leak out; when the length of the side of the folded plate is larger than the width of the barrel, the folded plate can be abutted against another folded plate which is relatively arranged after being folded by 90 degrees, and the folded plate is prevented from being folded towards the center of the barrel, so that the folded plate designed by the scheme is most reasonable in length.

Preferably, the cylinder body is formed by a square paperboard, one end of the paperboard is integrally formed with an elongated part, the width of the elongated part is the same as the height of the cylinder body, the elongated part and the other end of the paperboard are overlapped and fixedly bonded, and the elongated part is positioned on the inner side of the cylinder body.

Through adopting above-mentioned technical scheme, overlap through the other end of extension portion with the cardboard, increase area of contact is convenient for connect fixedly through the both ends of extension portion with the cardboard, and extension portion makes the clearance at the junction at cardboard both ends diminish, and when the article that the carton was built-in is less or when thinner, the article was difficult for spilling from the junction of cardboard.

Preferably, the cardboard is equipped with the third crease between two adjacent first creases, the third crease is located the longer one side of box length, the distance between third crease and the adjacent one first crease is the same with the width of box, be equipped with the fourth crease that corresponds with the third crease on the folded plate.

By adopting the technical scheme, when the first crease is arranged in the cylinder body and the adjacent third crease is aligned with the adjacent first crease, and the fourth crease is aligned with the edge of the folded plate, the carton can be folded.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the two adjacent folded plates are mutually abutted, when the folded plates are folded towards the center of the barrel body by 90 degrees, gaps at four corners of the formed carton are smaller, and smaller parts are not easy to leak out from gaps at the four corners of the carton;

2. the notch that sets up at the opening part of barrel, when two adjacent folded plates are folded 90 degrees, have the notch as the buffering, the difficult extrusion deformation of handing-over department of barrel and two folded plates.

Drawings

Fig. 1 is a schematic view of the carton as it is unfolded.

Fig. 2 is a schematic structural view of the cartridge.

Reference numerals: 1. a barrel; 11. a first fold; 12. cutting; 13. a paperboard; 131. a lengthening part; 2. folding the plate; 3. a second fold; 4. a third fold; 5. and a fourth fold.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a seamless paper box. Referring to fig. 1 and 2, a seamless carton, including both ends open-ended square barrel 1, be equipped with first crease 11 between two adjacent faces of barrel 1, the both ends of barrel 1 respectively are equipped with four folded plates 2, folded plate 2 is located between two adjacent first creases 11, be equipped with second crease 3 between folded plate 2 and the barrel 1, square barrel 1 and folded plate 2 expand the tiling and become a complete rectangular board, two adjacent folded plates 2 are direct cutting formation on rectangular board, therefore be contradictory each other when two adjacent folded plates 2 tile.

Traditional carton needs the fluting in the manufacture process compared, contradict each other between two adjacent folded plates 2 of this scheme, turn over a 90 degrees backs towards barrel 1 center when folded plate 2, the clearance of the four corners department of the carton of formation is less, the less spare part is difficult for spilling from the gap of carton four corners department, this scheme does not have the fluting operation simultaneously, the leftover bits that also can not have the fluting production, raw and other materials are very abundant by the utilization to a certain extent, this one step of operation of waste recycling has also been subtracted, the cost of setting up equipment has been saved for the enterprise.

The barrel 1 is unfolded to form a complete paper board 13, one end of the paper board 13 is integrally formed with an elongated part 131, the material of the elongated part 131 is the same as that of the paper board 13, the width of the elongated part 131 is the same as the height of the barrel 1, the elongated part 131 is overlapped with the other end of the paper board 13 and is bonded and fixed through glue, and the elongated part 131 is located on the inner side of the barrel 1.

The contact area is increased by overlapping the other end of the elongated portion 131 with the other end of the paper board 13, so that the two ends of the paper board 13 are connected and fixed through the elongated portion 131, and the elongated portion 131 reduces the gap at the joint of the two ends of the paper board 13, so that when the articles in the carton are small or thin, the articles are not easy to leak from the joint of the paper board 13.

The side length of the side of the two folded plates 2 close to each other is larger than one half of the width of the cylinder body 1 and smaller than the width of the cylinder body 1.

When the side length of the folded plate 2 is less than half of the width of the cylinder body 1, after the two oppositely arranged folded plates 2 at the opening of the cylinder body 1 are folded for 90 degrees, a gap is formed between the two oppositely arranged paper plates 13, finally, a hole is left at the bottom of the carton, the bottom of the carton is not completely closed, and articles in the carton are easy to leak out; when the side length of the folded plate 2 is larger than the width of the barrel body 1, the folded plate 2 is butted with the other folded plate 2 which is oppositely arranged after being folded for 90 degrees, and the other folded plate 2 is prevented from being folded towards the center of the barrel body 1, so that the folded plate 2 designed by the scheme is lengthened most reasonably.

The third crease 4 is arranged between two adjacent first creases 11 on the paperboard 13, the third crease 4 is positioned on the longer side of the length of the box body, the distance between the third crease 4 and the adjacent first crease 11 is the same as the width of the box body, and the fourth crease 5 corresponding to the third crease 4 is arranged on the folded plate 2.

When the carton is folded along one first crease 11 toward the cylinder body 1, the adjacent third crease 4 is aligned with the adjacent first crease 11, and the fourth crease 5 is aligned with the edge of the folded plate 2, the carton can be folded.

The barrel 1 is directly cut at the opening to form obliquely arranged notches 12, the notches 12 are arranged on two longer side surfaces of the barrel 1, one end of each notch 12 is located at the end part of each first fold 11, the other end of each notch 12 extends towards the middle of the side surface of the barrel 1, and the included angle between each notch 12 and each first fold 11 is 15-30 degrees.

The notch 12 is arranged at the opening of the cylinder body 1, when the two adjacent folded plates 2 are folded by 90 degrees, the notch 12 is used as a buffer, and the joint of the cylinder body 1 and the two folded plates 2 is not easy to extrude and deform.

The implementation principle of the seamless paper box in the embodiment of the application is as follows: fold cardboard 13 along first crease 11 earlier to end connection, it needs to be noted that, overlap the one end of lengthening portion 131 and cardboard 13 and through glue bonding fixed formation barrel 1, fold 90 degrees with folded plate 2 towards barrel 1 central line at barrel 1 both ends again, the incision 12 of seting up can guarantee that barrel 1 and two difficult extrusion deformation of handing-over department of folded plate 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A seamless carton, characterized by: the foldable paper box is characterized by comprising a square barrel body (1) with openings at two ends, wherein first creases (11) are arranged between two adjacent surfaces of the barrel body (1), four folded plates (2) are respectively arranged at two ends of the barrel body (1), two adjacent folded plates (2) are mutually abutted, the folded plates (2) are positioned between two adjacent first creases (11), and second creases (3) are arranged between the folded plates (2) and the barrel body (1);

a notch (12) is formed in the opening of the cylinder (1), one end of the notch (12) is located at the end of the first crease (11), and the other end of the notch (12) faces the other opening of the cylinder (1);

the notches (12) are positioned on two side surfaces of the cylinder body (1) with longer length;

the cut (12) is obliquely arranged, and one end, away from the first crease (11), of the cut (12) extends towards the middle of the side face of the barrel body (1).

2. The seamless carton according to claim 1, wherein: the included angle between the notch (12) and the first fold (11) is 15-30 degrees.

3. The seamless carton according to claim 1, wherein: the side length of one side of each of the two folded plates (2) close to each other is larger than one half of the width of the cylinder body (1) and smaller than the width of the cylinder body (1).

4. The seamless carton according to claim 1, wherein: the barrel (1) is composed of a square paperboard (13), an elongated part (131) is integrally formed at one end of the paperboard (13), the width of the elongated part (131) is the same as the height of the barrel (1), the elongated part (131) is overlapped with the other end of the paperboard (13) and is fixedly bonded, and the elongated part (131) is located on the inner side of the barrel (1).

5. The seamless carton according to claim 4, wherein: cardboard (13) are equipped with third crease (4) between two adjacent first creases (11), third crease (4) are located the longer one side of box length, distance between third crease (4) and the adjacent one first crease (11) is the same with the width of box, be equipped with fourth crease (5) that correspond with third crease (4) on folded plate (2).