CN204507614U - A kind of stepped valve bag - Google Patents

Abstract

The utility model discloses a stepped valve pocket, which comprises a paper bag body, an upper bottom, a lower bottom and a valve port structure; the paper bag body is used as a base, and the upper bottom and the lower bottom are respectively arranged on the upper end of the paper bag body and the lower end; the upper bottom is provided with a valve port structure; it is characterized in that: the paper bag body is arranged in a ladder shape; the bottom of the valve port packaging bag of the present invention adopts a ladder-lapped layered structure, which is convenient for glue to work well Penetrating between the paper and the paper, it has the effect of sticking the folded corners and seams at the bottom of the valve-port packaging bag layer by layer. This connection method increases the firmness of the connection at the bottom of the valve-port packaging paper bag, and the sealing function of the bottom is better. The purpose of omitting the inner reinforcement strip at the bottom of the valve port packaging bag is achieved.

Description

A stepped valve pocket

technical field

The utility model relates to a valve pocket, in particular to a stepped valve pocket, which belongs to the technical field of packaging.

Background technique

At present, with the development of the market, in order to meet the packaging needs of nano-powder materials, the overall structure of the packaging bag has been constantly innovating. The inner reinforcement strip is added to the bottom of the paper bag. This process is relatively complicated and increases the production cost. Of course, it is suitable for filling nano-powder materials in such structural packaging bags; but in the packaging industry, in order to improve the production efficiency of paper bags and To improve the quality of the product, the structure of the paper packaging bag must be improved, and new technology and technology should be introduced. The paper bag structure with steps in the valve pocket can subvert the structure of the traditional paper bag bottom with internal reinforcing strips, and the internal reinforcing strips can be omitted. , Simplify the process, reduce costs and improve production efficiency.

Contents of the invention

In order to make up for the deficiencies of the prior art, the utility model provides a valve port structure with a simple structure, which can effectively increase the firmness of the connection at the bottom of the valve port paper bag, ensure a good sealing effect at the bottom, and achieve the goal of omitting the inner part of the valve port package. The purpose of the reinforcement bar.

In order to achieve the above object, the technical scheme that the utility model takes is:

A stepped valve pocket, comprising a paper bag body, an upper bottom, a lower bottom, and a valve port structure; taking the paper bag body as a base, the upper bottom and the lower bottom are respectively arranged at the upper end and the lower end of the paper bag body; the upper bottom There is a valve port structure inside; it is characterized in that: the paper bag body is arranged in a ladder shape;

As a further improvement, the paper bag body includes two layers of paper, namely the first paper layer and the second paper layer, the first paper layer and the second paper layer are overlapped and connected by glue; the first paper layer The bottom end of the second paper layer is arranged on the inside, and the other end is arranged on the outside of the second paper layer;

As a further improvement, a PE film is provided inside the second paper layer; the PE film is a high-strength barrier film;

As a further improvement, both ends of the first paper layer are provided with overlapping joints; glue is provided on the overlapping joints.

Compared with the prior art, the utility model has the beneficial effect of adopting the above scheme: the bottom of the valve port packaging bag of the utility model adopts a ladder-lapping structure, which facilitates the glue to penetrate well between the paper and the paper. , to play the role of adhering the folded seams at the bottom of the valve-port packaging bag layer by layer. This connection method increases the firmness of the connection at the bottom of the valve-port packaging paper bag, and the sealing function at the bottom is better, reaching the bottom of the valve-port packaging bag. The purpose of omitting inner reinforcing strips.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a side view structural representation of the paper bag body in the utility model;

Fig. 3 is a structural representation of the paper bag body in the utility model;

Fig. 4 is a schematic diagram of paper overlapping in the utility model;

Among them, 1. Paper bag body; 2. Upper bottom; 3. Lower bottom; 4. Valve port structure; 6. First paper; 7. Second paper; 10. First glue; 11. First joint; 12. The second glue; 13, the second joint; 14, the third glue; A, the bottom of the first paper; B, the top of the first paper layer.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figures 1, 2, 3, and 4, a stepped valve bag includes a paper bag body 1, an upper bottom 2, a lower bottom 3, and a valve port structure 4; the paper bag body is arranged in a stepped shape;

Taking the paper bag body 1 as the base, the upper bottom 2 and the lower bottom 3 are respectively arranged on the upper end and the lower end of the paper bag body 1; the upper bottom 2 is provided with a valve port structure 4;

The paper bag body 1 includes two layers of paper, namely a first paper layer 6 and a second paper layer 7, the first paper layer 6 and the second paper layer 7 are overlapped, and the first paper layer 6 and the second paper layer The end of 7 is provided with glue 10, is the first glue, and described first paper layer 6 is bonded together by second paper layer 7 by this first glue 10; Rapid bonding and forming can also strengthen the firmness of heavy-duty packaging of paper bags;

The bottom end A of the first paper layer 6 is arranged on the inner side of the second paper layer 7, and the top end B of the first paper layer 6 is arranged on the outside of the second paper layer 7, and the distance beyond the second paper layer is equal to that of the first paper layer. The distance from the bottom end A of the layer 6 to the bottom end of the second paper layer 7;

The inside of the second paper layer 7 is provided with a PE film (marked in the figure); the PE film is a high-strength barrier film;

Both ends of the first paper layer 6 are provided with joints, which are respectively the first joint 11 and the second joint 13; the first joint 11 is provided with glue 12, which is the second glue; Glue 14 is provided on the first joint 13, which is the third glue;

Due to the structure of the paper bag body 1 arranged in a ladder shape, when the paper bag body 1 is folded and formed, the two ends of the paper bag body 1 will be folded into the upper bottom 2 and the lower bottom 3; The bottom 3 is overlapped layer by layer with the first overlapping interface 11 and the second overlapping interface 13 in the shape of steps, and the second glue 12 and the third glue 14 are used for bonding on the first overlapping interface 11 and the second overlapping interface 13 It is bonded and formed by the agent, so that the second glue 12 and the third glue 14 can penetrate well between the first paper layer 6 and the second paper layer 7, and play a role in connecting the upper bottom 2 and the lower part of the valve packaging bag. The bottom 3 folded corners are glued together layer by layer. This connection method increases the firmness of the connection between the upper bottom 2 and the lower bottom 3 of the valve wrapping paper bag, and keeps the sealing function of the upper bottom 2 and the lower bottom 3 better, achieving The purpose of omitting the inner reinforcing strip at the bottom of the valve port packaging bag is achieved.

The utility model adopts a ladder-lapped layer-to-layer structure, which facilitates the glue to penetrate between the paper and the paper, and plays the role of bonding the bottom of the valve port packaging bag with folded corners and seams layer by layer, so that the connection method increases The firmness of the connection at the bottom of the valve packaging paper bag has a better sealing function at the bottom, which achieves the purpose of omitting the inner reinforcing strip at the bottom of the valve packaging bag.

The utility model is not limited to the above-mentioned specific implementation manners, and various transformations made by those skilled in the art starting from the above-mentioned ideas without creative work all fall within the protection scope of the utility model.

Claims (4)

1. A stepped valve pocket, comprising a paper bag body, an upper bottom, a lower bottom, and a valve port structure; with the paper bag body as a base, the upper bottom and the lower bottom are respectively arranged on the upper and lower ends of the paper bag body; There is a valve port structure inside the upper bottom; the feature is that: the paper bag body is arranged in a ladder shape. 2. A stepped valve bag according to claim 1, characterized in that: the paper bag body includes two layers of paper, respectively the first paper layer and the second paper layer, the first paper layer and the second paper layer The paper layers are overlapped and connected by glue; the bottom end of the first paper layer is set inside the second paper layer, and the other end is set outside the second paper layer. 3. A stepped valve pocket according to claim 2, characterized in that: a PE film is provided inside the second paper layer; and the PE film is a high-strength barrier film. 4. A stepped valve pocket according to claim 2, characterized in that: both ends of the first paper layer are provided with overlapping joints; glue is provided on the overlapping joints.