CN-224211440-U - Roof paper box with sealed bottom

Abstract

The utility model discloses a bottom-sealed roof paper box, and belongs to the field of roof paper boxes. The utility model relates to a bottom-sealed roof paper box, which comprises a shell, wherein second folding sheets are arranged on two sides of the lower end of the shell, a first folding sheet is arranged in the middle of the lower end of the shell, and double-layer first thermoplastic strips are formed at the lower ends of the first folding sheet and the second folding sheet through thermoplastic. The utility model solves the problems that the existing yoghurt packaging paper box is easy to cause thermoplastic failure at a folding position, is easy to cause water leakage at the bottom and affects sealing effect, and the second folding sheet is convenient to bend through the reserved second thermoplastic strip, and after the second folding sheet and the first folding sheet are supported through the second supporting frame, the first thermoplastic strip and the second thermoplastic strip can be prevented from needing additional bending, bending and folding are reduced, and gaps are avoided from being generated due to folding of the first thermoplastic strip and the second thermoplastic strip at the thermoplastic position.

Inventors

• WANG DIMING
• ZENG JIANJUN
• Zhang Wangshun
• HE QILIANG
• SHI YANLIANG
• HE HUI
• LI ZHENGTAO
• SHEN YI

Assignees

• 红创包装(安徽)有限公司

Dates

Publication Date

20260508

Application Date

20250623

Claims (6)

1. 1. The utility model provides a bottom seal's roof paper box, includes shell (1), its characterized in that, the both sides of shell (1) lower extreme are provided with second folded piece (3), the centre of shell (1) lower extreme is provided with first folded piece (2), first folded piece (2) and second folded piece (3) lower extreme are formed with double-deck first strip (8) of moulding through moulding plastics, first thermoplastic strip (8) both sides set up second that has recess (9) and mould strip (11), both ends all are provided with banding second support frame (10) around recess (9) outside, second support frame (10) are connected with second folded piece (3) through glue.
2. 2. A bottom-sealed roof box as claimed in claim 1, wherein the recess (9) is located at the lower end of the second folded sheet (3).
3. 3. A bottom sealed roof box according to claim 2, wherein a bending tab (4) is provided between the second bending tab (3) and the first bending tab (2).
4. 4. A bottom-sealed roof box according to claim 3, wherein gaskets (5) are provided at both front and rear ends between the two second folding pieces (3), and the gasket (5) is fixed to the first folding piece (2) at the lower end of the casing (1) by glue.
5. 5. A bottom-sealed roof box according to claim 4, wherein a first support (6) is arranged between the second fold (3) and the casing (1), and the first support (6) is connected to the casing (1) and the first fold (2) by glue, respectively.
6. 6. A bottom-sealed roof box as claimed in claim 5, wherein the first support (6) is C-shaped.

Description

Roof paper box with sealed bottom Technical Field The utility model relates to the field of roof paper bags, in particular to a roof paper bag box with a sealed bottom. Background The bottom sealed roof paper box is a paper box form commonly used for yogurt packaging, and is characterized in that the bottom of the paper box is sealed through pressing and thermoplastic technology, so that yogurt can not leak in the transportation and storage processes, the upper end of the paper box is also subjected to pressing and thermoplastic processing to form a unique roof shape, the paper box is convenient to open and the stability of the package is improved, the roof shape is attractive in design, the yogurt can be effectively prevented from overflowing during pouring, and the bottom sealed roof paper box is a yogurt packaging box combining tightness and convenience and is widely applied to packages of dairy products such as yogurt. When the lower end of the existing yoghurt packaging paper box is folded after thermoplastic, the bottom material is pressed in advance, the middle is rectangular, two sides of the rectangle are triangular, the folding is carried out according to the position between the triangle and the rectangle, in the folding process, the position of the fold is just thermoplastic, and the folded thermoplastic position is provided with two layers of packaging paper box materials, which is equivalent to four layers of packaging paper box materials for folding and bending, so that thermoplastic failure of the folding position is easy to cause water leakage at the bottom, and the sealing effect is affected. Disclosure of utility model The utility model aims to provide a roof paper box with a sealed bottom, which is convenient for bending a second folding sheet through a reserved second thermoplastic strip, and can avoid the need of extra bending of the first thermoplastic strip and the second thermoplastic strip after the second folding sheet and the first folding sheet are supported through a second supporting frame, reduce bending and folding, avoid gaps generated by folding the first thermoplastic strip and the second thermoplastic strip at thermoplastic positions, and solve the problems in the prior art. In order to achieve the purpose, the technical scheme is that the bottom-sealed roof paper box comprises a shell, second folding plates are arranged on two sides of the lower end of the shell, a first folding plate is arranged in the middle of the lower end of the shell, double-layer first thermoplastic strips are formed at the lower ends of the first folding plate and the second folding plate through thermoplastic, second thermoplastic strips with grooves are arranged on two sides of the first thermoplastic strips, strip-shaped second supporting frames are arranged at the front end and the rear end of the outer portion of the groove, the second supporting frames are connected with the second folding plates through glue, and bending of the second folding plates can be facilitated through the second thermoplastic strips with the grooves. Preferably, the groove is located at the lower end of the second folded sheet, so that the second thermoplastic strip having the groove is in an active bending position, and sealing of the bottom of the housing can be facilitated by the groove. Preferably, a bending piece is arranged between the second folding piece and the first folding piece, and the bending piece is a bending position between the second folding piece and the first folding piece due to the limitation of the first supporting frame. Preferably, two both ends all are provided with the gasket around between the second folded sheet, the gasket is fixed through glue with the first folded sheet position of shell lower extreme, supports the lower extreme of second folded sheet through the gasket is supplementary after the gasket supports. Preferably, a first supporting frame is arranged between the second folding piece and the shell, the first supporting frame is connected with the shell and the first folding piece through glue respectively, the protruding first supporting frame can limit the folding position of the second folding piece, meanwhile, the two sides of the shell can be limited and supported through the second folding piece, and the user can conveniently grasp and hold the folding piece. Preferably, the first support frame is C-shaped, and the C-shaped first support frame is prevented from falling off during holding, thereby providing additional support capacity and anti-slip effect. Compared with the prior art, the utility model has the following beneficial effects: According to the utility model, the first supporting frame is fixed at the upper end of the second folded sheet and the side surface of the shell through glue, the groove is cut at the position of the first thermoplastic strip at the lower end of the second folded sheet to form a second thermoplastic strip which is convenient to ben