Paper-plastic bag with pull-type opening

Abstract

The utility model relates to the technical field of paper-plastic bags, in particular to a paper-plastic bag with a pull-type opening. The paper-plastic bag sealing device comprises a sealing pressing block, a paper-plastic bag is sealed through the sealing pressing block, a bag body is arranged below the sealing pressing block, articles are contained at the bottom of the bag body, a supporting assembly is arranged in the bag body, and an opening is supported through the supporting assembly. The opening of the paper-plastic bag is sealed or unsealed through the arranged sealing pressing block, when a user needs to place articles, the single-layer bag is opened, the articles are placed in the double-layer bag, the sealing pressing block slides to extrude the two self-sealing strips on the inner wall of the double-layer bag to be meshed, and the articles are sealed in the paper-plastic bag. When a plurality of articles need to be taken out from the paper-plastic bag, the supporting assembly is made to be square by extruding the supporting strip, the opening of the paper-plastic bag is opened through the supporting assembly, the situation that the articles cannot be continuously taken out from the paper-plastic bag due to the fact that the opening of the paper-plastic bag is closed due to the elasticity of the self-sealing strip during continuous article taking is avoided, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper-plastic bags, and in particular to a paper-plastic bag with a pull-type opening. Background Art

[0002] Paper-plastic bag, also known as three-in-one composite paper bag, is made of plastic and kraft paper. Usually, the plastic layer is made of PPP woven cloth with PP as the base material, and the kraft paper is made of refined composite special kraft paper. The two are bonded by molten plastic hot lamination. The kraft paper coated cloth is formed by bag making and then processed and sewn into three-in-one paper-plastic bag. It is a small bulk container, which is mainly transported in units by manpower or forklift. It is convenient for shipping small bulk powder and granular materials and is easy to load and unload. It is currently the most popular and practical ordinary packaging material. Usually, a self-sealing strip is set at the opening of the paper-plastic bag to achieve continuous use of the paper-plastic bag. However, since the self-sealing strip has a certain elasticity, after taking out an item, the opening will close, thereby affecting the continuous taking process. Utility Model Content

[0003] The purpose of the utility model is to provide a paper-plastic bag with a pull-type opening to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides a paper-plastic bag with a pull-type opening, including a bag body, a double-layer bag including a double-layer bag, a support assembly is arranged in the bag body, the support assembly includes a plurality of support bars, both ends of the support bars are fixedly connected with semi-cylinders up and down, the plurality of support bars are connected by pins penetrating the semi-cylinders arranged up and down, a positioning ball is arranged between the semi-cylinders of every two support bars, a groove is opened on one side of the semi-cylinder of the support bar close to the positioning ball, and the positioning ball is embedded in the grooves of the two support bar semi-cylinders and rolls.

[0005] As a further improvement of the technical solution, one side of the opening of the double-layer bag is fixedly connected to a single-layer bag, and a side of the single-layer bag away from the double-layer bag is provided with a hinge structure.

[0006] As a further improvement of the technical solution, two self-sealing strips are respectively fixed to the inner wall and outer wall of the single-layer bag away from the double-layer bag, and the two self-sealing strips fixedly connected on the inner walls on both sides of the opening of the single-layer bag are meshed.

[0007] As a further improvement of the technical solution, a sealing block is provided on the side of the single-layer bag away from the double-layer bag. The sealing block is slidably engaged with the self-sealing strip on the outside of the single-layer bag, and the sealing block squeezes the outside of the single-layer bag.

[0008] As a further improvement of the technical solution, the support assembly is arranged at the connection between the double-layer bag and the single-layer bag, the double-layer bag is arranged as two layers, and the single-layer bag is fixed between the side walls of the double-layer bag.

[0009] As a further improvement of the technical solution, a plurality of support bars are connected to each other in a retractable diamond shape.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the paper-plastic bag with a pull-type opening, the opening of the paper-plastic bag is sealed or unsealed by a sealing pressing block. When the user needs to place items, the single-layer bag is opened and the items are placed in the double-layer bag. The sliding sealing pressing block squeezes the two self-sealing strips on the inner wall of the double-layer bag until they are engaged, so that the items are sealed in the paper-plastic bag. When multiple items need to be taken out of the paper-plastic bag, the support strip is squeezed to make the support assembly square, and the opening of the paper-plastic bag is propped open by the support assembly, so as to avoid the inability to take out items from the paper-plastic bag continuously due to the elastic force of the self-sealing strip driving the opening of the paper-plastic bag to close when taking out items continuously, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the disassembled structure of the support assembly of the utility model;

[0014] Figure 3 It is a schematic diagram of the support component structure of the utility model.

[0015] The meaning of each number in the figure is:

[0016] 1. Sealing block;

[0017] 2. Bag body; 21. Double-layer bag; 22. Self-sealing strip; 23. Single-layer bag;

[0018] 3. Support assembly; 31. Support bar; 32. Positioning ball. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] Example 1

[0022] See also Figure 1-Figure 3 As shown, this embodiment provides a paper-plastic bag with a pull-type opening, including a sealing block 1, through which the paper-plastic bag is sealed, a bag body 2 is arranged below the sealing block 1, and the bag body 2 includes a double-layer bag 21, and articles are placed at the bottom of the double-layer bag 21. The double-layer bag 21 is provided with an inner and outer layer. The two layers of double-layer bags 21 are provided to make the paper-plastic bag stronger, and a single-layer bag 23 is fixedly connected to one side of the double-layer bag 21 close to the sealing block 1, and a side of the single-layer bag 23 away from the double-layer bag 21 is fixedly connected to the single-layer bag 23. It is set as a hinge-shaped opening, and articles are put in from the opening. Self-sealing strips 22 are fixedly installed on the two inner side walls of the opening of the single-layer bag 23 respectively, and the paper-plastic bag is sealed by meshing the two self-sealing strips 22 on the inner side walls of the single-layer bag 23. Self-sealing strips 22 are fixedly installed on the two outer side walls of the opening of the single-layer bag 23 respectively, and the sealing pressing block 1 is slidably clamped on the self-sealing strip 22 installed on the outer side wall. The self-sealing strip 22 on the outer side wall is squeezed by sliding the sealing pressing block 1, so that the two self-sealing strips 22 on the inner wall are meshed.

[0023] The support assembly 3 is provided inside the connection between the double-layer bag 21 and the single-layer bag 23, and the opening of the paper-plastic bag can be opened or closed by changing the shape of the support assembly 3. The support assembly 3 includes a plurality of support bars 31, and the side walls of the support bars 31 are connected to the side walls of the double-layer bag 21. The two ends of the support bars 31 are fixedly connected with semi-cylinders up and down, and the semi-cylinders are arranged so that the plurality of support bars 31 can rotate after the connection. The plurality of support bars 31 are connected by pins penetrating the semi-cylinders arranged up and down, and the support bars 31 are connected end to end to form a diamond shape. The shape of the support assembly 3 is changed by squeezing the two ends of the diamond shape, so that the opening of the double-layer bag 21 remains open or closed. A locking ball 32 is arranged between the semi-cylinders of every two support bars 31, and the locking ball 32 prevents the connected support bars 31 from loosening when rotating. A groove is provided on the side of the semi-cylinder of the support bar 31 close to the locking ball 32, and the locking ball 32 is embedded in the groove of the two semi-cylinders of the support bar 31 and rolls, and the locking ball 32 is prevented from falling off by the arranged groove.

[0024] When the pull-type opening paper-plastic bag of this embodiment is used, the items are placed in the double-layer bag 21, and the support strips 31 are pinched to make the support strips 31 into a flat diamond shape, thereby driving the opening of the double-layer bag 21 closer, and then the self-sealing strips 22 at the opening of the double-layer bag 21 are squeezed by the sliding sealing block 1 to seal the paper-plastic bag. When it is necessary to take out the items from the paper-plastic bag, the sealing block 1 is slid in the opposite direction to separate the two self-sealing strips 22 on the inner wall of the opening of the double-layer bag 21, and the two ends of the support strips 31 are squeezed to make the connection between the support strips 31 into a square shape. Since the positioning balls 32 arranged between the support strips 31 provide a certain resistance, the opening of the paper-plastic bag will not be closed when the items are taken out, thereby ensuring a smooth process of taking out the items.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A paper-plastic bag with a pull-type opening, comprising a bag body (2), wherein the bag body (2) comprises a double-layer bag (21), and a support assembly (3) is arranged inside the bag body (2), characterized in that: The support assembly (3) comprises a plurality of support bars (31), both ends of the support bars (31) being fixedly connected with semi-cylinders in an upper and lower position, the plurality of support bars (31) being connected with each other by means of pins penetrating the semi-cylinders arranged upper and lower, a locking ball (32) being arranged between every two semi-cylinders of the support bars (31), a groove being provided on one side of the semi-cylinder of the support bar (31) close to the locking ball (32), and the locking ball (32) being embedded in the grooves of the semi-cylinders of the two support bars (31) and rolling.

2. The pull-open paper-plastic bag according to claim 1, characterized in that: A single-layer bag (23) is fixedly connected to one side of the opening of the double-layer bag (21), and a side of the single-layer bag (23) away from the double-layer bag (21) is arranged as a hinge structure.

3. The pull-open paper-plastic bag according to claim 2, characterized in that: Two self-sealing strips (22) are fixed to the inner wall and outer wall of the single-layer bag (23) on one side away from the double-layer bag (21), respectively, and the two self-sealing strips (22) fixedly connected on the inner walls on both sides of the opening of the single-layer bag (23) are meshed.

4. The pull-open paper-plastic bag according to claim 2, characterized in that: A sealing block (1) is provided on the side of the single-layer bag (23) away from the double-layer bag (21), and the sealing block (1) is slidably engaged with the self-sealing strip (22) on the outside of the single-layer bag (23), and the sealing block (1) squeezes the outside of the single-layer bag (23).

5. The pull-open paper-plastic bag according to claim 1, characterized in that: The support assembly (3) is arranged at the connection between the double-layer bag (21) and the single-layer bag (23); the double-layer bag (21) is arranged to have two layers, and the single-layer bag (23) is fixed between the side walls of the double-layer bag (21).

6. The pull-open paper-plastic bag according to claim 1, characterized in that: A plurality of the support bars (31) are connected to each other in a retractable rhombus shape.

Images