Valve bag convenient to package

Abstract

The utility model discloses a valve bag convenient to package. The valve bag comprises a valve bag main body, an outer valve port is formed in the valve bag body, a fixing mechanism is arranged on the outer valve port, a hand strap is mounted on one side of the valve bag body, the fixing mechanism comprises connecting pieces, the connecting pieces are mounted at the top and the bottom of the outer valve port, an upper pressing piece and a lower pressing piece are mounted on the connecting pieces respectively, a woven belt is mounted on the upper pressing piece, and a connecting ring is arranged on the lower pressing piece. The woven belt penetrates through the connecting ring, fixing rings are installed on the two sides of the valve bag body, and the woven belt is matched with the fixing rings. The woven belt penetrates through the connecting ring and the fixing ring, the upper pressing piece and the lower pressing piece are mutually pressed and close to the outer side of the outer valve port, the outer valve port is fixed to the side face of the valve bag body, the outer valve port is sealed, and the situation that the valve bag body is not fully filled or a part of powder is used is avoided. The powder in the valve bag main body cannot fully extrude the inner valve port for self-sealing, and the powder is scattered from the outer valve port.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bags, in particular to a valve bag convenient for packaging. Background Technique

[0002] A valve bag, also known as a bottom-sealed bag or a square-bottom bag, is an internationally popular packaging bag. Its characteristic is that there is a "valve" left on the package for filling materials. During the filling process of this kind of bag, the materials enter the bag through the valve opening at the top or bottom. After filling, the inner valve bag will automatically seal, while the outer valve bag needs to be manually folded and sealed. The valve bag is mainly made of materials such as PP (polypropylene) or PE (polyethylene), and has the characteristics of improving packaging efficiency, convenient transportation, strong firmness, and low breakage rate. It is widely used in the packaging of powdery and granular materials in the fields of chemical industry, food, building materials, etc.

[0003] After the valve bag is filled, the inner valve opening is squeezed internally to achieve the self-sealing effect. However, in the case of insufficient filling or remaining after use, the internal filling material is not enough to squeeze the inner valve opening to play a sealing role. Only by folding the outer valve opening, the valve bag cannot be closed, and there will be a situation of spilling. Therefore, a valve bag convenient for packaging is needed to meet people's needs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a valve bag convenient for packaging to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A valve bag convenient for packaging, including a valve bag body; an outer valve opening is provided on the valve bag body, a fixing mechanism is provided on the outer valve opening, and a handle belt is installed on one side of the valve bag body.

[0006] Preferably, the fixing mechanism includes connecting pieces, the connecting pieces are installed at the top and bottom of the outer valve opening, upper pressing pieces and lower pressing pieces are respectively installed on the connecting pieces, a woven belt is installed on the upper pressing piece, a connecting ring is opened on the lower pressing piece, the woven belt penetrates through the connecting ring, fixing rings are installed on both sides of the valve bag body, and the woven belt and the fixing ring are adapted to each other.

[0007] Preferably, the valve bag body is divided into an inner layer, an intermediate layer and an outer layer. The outer layer is located on the outermost side, the inner layer is located on the innermost side, and the intermediate layer is fixedly installed between the inner layer and the outer layer.

[0008] Preferably, the inner layer includes a woven fabric, the woven fabric is located on the innermost side, and the outer side of the woven fabric is fixedly installed on the intermediate layer.

[0009] Preferably, the intermediate layer includes a PE film, one side of the PE film is fixedly installed on the woven fabric, and the other side of the PE film is fixedly installed on the outer layer.

[0010] Preferably, the outer layer includes kraft paper and a wear-resistant coating. One side of the kraft paper is fixedly installed on the PE film, and the other side of the kraft paper is fixedly installed on the wear-resistant coating. The wear-resistant coating is located on the outermost side.

[0011] Preferably, the upper pressing piece is located above the lower pressing piece, and the sum of the lengths of the upper pressing piece, the lower pressing piece and the woven belt is greater than the circumference of the maximum outer diameter of the outer valve opening.

[0012] Preferably, a hook surface of a magic tape is installed on the upper pressing piece, and a loop surface of the magic tape is installed on the woven belt, and the hook surface and the loop surface of the magic tape are adapted to each other.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] (1) In the present utility model, the upper pressing piece and the lower pressing piece are mutually pressed by passing the woven belt through the connecting ring and the fixing ring, and are close to the outside of the outer valve opening, and the outer valve opening is fixed on the side surface of the valve bag body to seal the outer valve opening, preventing the situation that when the valve bag body is not fully filled or after using a part of the powder material, the powder material in the valve bag body cannot fully squeeze the inner valve opening for self-sealing, and the powder material spills from the outer valve opening.

[0015] (2) By providing a wear-resistant coating on the kraft paper of the outer layer, the wear-resistant performance of the outer layer is increased, preventing the situation that the powder material inside the valve bag body spills due to wear of the valve bag body during the transportation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a three-dimensional structural schematic diagram of a valve bag convenient for packaging proposed by the present utility model;

[0017] Figure 2 FIG. is a structural schematic diagram of the outer valve opening and the fixing mechanism and other structures of a valve bag convenient for packaging proposed by the present utility model;

[0018] Figure 3 FIG. is a structural schematic diagram of the inner layer, the intermediate layer and the outer layer and other structures of a valve bag convenient for packaging proposed by the present utility model;

[0019] Figure 4 FIG. is a structural schematic diagram of the woven fabric, the PE film, the kraft paper and the wear-resistant coating and other structures of a valve bag convenient for packaging proposed by the present utility model.

[0020] In the figure: 1. Valve bag body; 2. Outer valve opening; 3. Fixing mechanism; 4. Carrying handle; 110. Inner layer; 111. Woven fabric; 120. Intermediate layer; 121. PE film; 130. Outer layer; 131. Kraft paper; 132. Wear-resistant coating; 301. Connecting piece; 302. Upper pressing piece; 303. Lower pressing piece; 304. Woven belt; 305. Connecting ring; 306. Fixing ring; 307. Hook surface of Velcro; 308. Loop surface of Velcro. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1: Please refer to Figures 1-4 , the present invention provides a technical solution: a valve bag convenient for packaging, including a valve bag body 1; in order to solve the problem that when the filling is insufficient or there is a remainder after use, the internal filler is not enough to squeeze the inner valve opening to play a sealing role, and only by folding the outer valve opening 2, the valve bag cannot be closed, resulting in powder leakage, an outer valve opening 2 is provided on the valve bag body 1, a fixing mechanism 3 is provided on the outer valve opening 2, and a carrying handle 4 is installed on one side of the valve bag body 1. The outer valve opening 2 is attached and fixed to one side of the valve bag body 1 through the fixing mechanism 3 to seal the outer valve opening 2.

[0023] In order to seal the outer valve opening 2, the fixing mechanism 3 includes a connecting piece 301, the connecting piece 301 is installed at the top and bottom of the outer valve opening 2, an upper pressing piece 302 and a lower pressing piece 303 are respectively installed on the connecting piece 301, a woven belt 304 is installed on the upper pressing piece 302, a connecting ring 305 is opened on the lower pressing piece 303, the woven belt 304 passes through the connecting ring 305, fixing rings 306 are installed on both sides of the valve bag body 1, the woven belt 304 and the fixing rings 306 are adapted to each other, the upper pressing piece 302 is located above the lower pressing piece 303, and the sum of the lengths of the upper pressing piece 302, the lower pressing piece 303 and the woven belt 304 is greater than the circumference of the maximum outer diameter of the outer valve opening 2. A hook surface of Velcro 307 is installed on the woven belt 304, and a loop surface of Velcro 308 is installed on the upper pressing piece 302, and the hook surface of Velcro 307 and the loop surface of Velcro 308 are adapted to each other.

[0024] The working principle is as follows: During use, powder is poured into the valve bag body 1 through the outer valve opening 2. After the valve bag body 1 is filled with powder, the powder squeezes the inner valve opening to self-seal. At this time, the woven belt 304 passes through the connecting ring 305, presses the upper pressing piece 302 and the lower pressing piece 303 against each other, drives the outer valve opening 2 to fit and approach the outside of the outer valve opening 2, passes the woven belt 304 through the fixing ring 306 and bends it in the opposite direction, so that the hook surface 307 of the Velcro on the woven belt 304 adheres to the loop surface 308 of the Velcro on the upper pressing piece 302, fixes the outer valve opening 2 on the side of the valve bag body 1, and closes the outer valve opening 2 to prevent the situation that the powder in the valve bag body 1 cannot fully squeeze the inner valve opening for self-sealing and the powder spills from the outer valve opening 2 when the valve bag body 1 is not fully filled or after using a part of the powder.

[0025] Embodiment 2: As Figure 3 and 4 , in order to increase the wear resistance of the valve bag body 1 and prevent the valve bag body 1 from breaking due to wear during handling and the stored items from spilling, the valve bag body 1 is divided into an inner layer 110, an intermediate layer 120 and an outer layer 130. The outer layer 130 is located on the outermost side, the inner layer 110 is located on the innermost side, and the intermediate layer 120 is fixedly installed between the inner layer 110 and the outer layer 130. The inner layer 110 includes a woven fabric 111, which is located on the innermost side, and the outside of the woven fabric 111 is fixedly installed on the intermediate layer 120. The intermediate layer 120 includes a PE film 121, one side of the PE film 121 is fixedly installed on the woven fabric 111, and the other side of the PE film 121 is fixedly installed on the outer layer 130. The outer layer 130 includes kraft paper 131 and a wear-resistant coating 132. One side of the kraft paper 131 is fixedly installed on the PE film 121, and the other side of the kraft paper 131 is fixedly installed on the wear-resistant coating 132. The wear-resistant coating 132 is located on the outermost side. The strength of the outer layer 130 is increased through the wear-resistant coating 132 to prevent the powder inside the valve bag body 1 from spilling due to wear during transportation. The other features are the same as those in Embodiment 1.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve bag convenient for packaging, comprising a valve bag body (1); characterized in that: An outer valve opening (2) is provided on the valve bag body (1), a fixing mechanism (3) is provided on the outer valve opening (2), and a carrying handle (4) is installed on one side of the valve bag body (1). The fixing mechanism (3) includes connecting pieces (301). The connecting pieces (301) are installed at the top and bottom of the outer valve opening (2). An upper pressing piece (302) and a lower pressing piece (303) are respectively installed on the connecting pieces (301). A woven belt (304) is installed on the upper pressing piece (302). A connecting ring (305) is formed on the lower pressing piece (303). The woven belt (304) passes through the connecting ring (305). Fixing rings (306) are installed on both sides of the valve bag body (1). The woven belt (304) is adapted to the fixing rings (306).

2. The valve pocket convenient for packaging according to claim 1 is characterized in that: The valve bag body (1) is divided into an inner layer (110), a middle layer (120) and an outer layer (130). The outer layer (130) is located on the outermost side, the inner layer (110) is located on the innermost side, and the middle layer (120) is fixedly installed between the inner layer (110) and the outer layer (130).

3. The valve pocket convenient for packaging according to claim 2, wherein: The inner layer (110) includes a woven fabric (111). The woven fabric (111) is located on the innermost side, and the outer side of the woven fabric (111) is fixedly installed on the middle layer (120).

4. The valve bag convenient for packaging according to claim 3, characterized in that: The middle layer (120) includes a PE film (121). One side of the PE film (121) is fixedly installed on the woven fabric (111), and the other side of the PE film (121) is fixedly installed on the outer layer (130).

5. The valve pocket convenient for packaging according to claim 4, wherein: The outer layer (130) includes kraft paper (131) and a wear-resistant coating (132). One side of the kraft paper (131) is fixedly installed on the PE film (121), the other side of the kraft paper (131) is fixedly installed on the wear-resistant coating (132), and the wear-resistant coating (132) is located on the outermost side.

6. The valve pocket convenient for packaging according to claim 1, characterized in that: The upper pressing piece (302) is located above the lower pressing piece (303). The total length of the upper pressing piece (302), the lower pressing piece (303) and the woven belt (304) is greater than the circumference of the maximum outer diameter of the outer valve opening (2).

7. A valve bag convenient for packaging according to claim 1, characterized in that: A hook-and-loop fastener pile surface (307) is installed on the woven belt (304), and a hook-and-loop fastener hook surface (308) is installed on the upper pressing piece (302). The hook-and-loop fastener pile surface (307) is adapted to the hook-and-loop fastener hook surface (308).

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