Conductive lining bag for metal drum

Abstract

The utility model discloses a conductive lining bag for a metal barrel in the technical field of storage and transportation containers, the conductive lining bag is made of a conductive film, the conductive film is formed by combining a plurality of material layers, the conductive film comprises a protective layer, a high-barrier layer, a protective layer and a conductive layer from outside to inside, the conductive layer is arranged on the inner layer of a bag body, and the high-barrier layer is arranged on the outer layer of the bag body. In contact with a packaged product, the protective layer and the high-barrier layer on the outer side are both non-conductors; the conducting layer is also a heat-sealing layer, a conducting layer outer flange is formed at the bottom of the bag body after the bag bottom is heat-sealed, the conducting layer in the bag body is outwards turned to the bag bottom or the outer side, and the outer side of the bottom of the bag body is in contact with the metal barrel to form a conducting channel after installation. The electrostatic discharge device has the advantages of being good in electrostatic discharge effect, convenient to install, low in cost and the like.

Description

A conductive inner liner bag for metal drums Technical Field

[0001] This utility model relates to the field of storage and transportation container technology, specifically a conductive inner liner bag for metal drums. Background Technology

[0002] In logistics transportation and storage, the storage and transportation of liquid materials currently often adopts the technology of setting inner lining bags inside packaging containers. Some materials generate static electricity due to the movement of the material during filling or transportation, which poses a risk of combustion and explosion. The current technical solution is to set static electricity discharge devices on the barrel or inner bag. For single-layer conductive bags and multi-layer conductive bags, the addition of conductive materials to the bag film will cause embrittlement, which will significantly reduce the tensile strength, abrasion resistance and barrier properties of the bag. To deal with these reductions, the thickness of the material and the level of the barrier material are increased to solve the above problems. This will greatly increase the cost of conductive bags, and the actual effect is still not ideal. In addition, it will increase the difficulty of processing, molding and installation. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a conductive inner lining bag for metal drums.

[0004] This utility model is achieved through the following technical solution:

[0005] A conductive inner liner bag for metal drums, characterized in that: the conductive inner liner bag is made of a conductive film, which is composed of several material layers. From the outside to the inside, the conductive film consists of a protective layer, a high-barrier layer, a protective layer, and a conductive layer. The conductive layer is located in the inner layer of the bag and contacts the packaged product. The outer protective layer and high-barrier layer are non-conductive. The conductive layer is also a heat-sealing layer. After heat-sealing the bottom of the bag, a conductive layer folds outward at the bottom of the bag, folding the conductive layer inside the bag to the bottom or outside. After installation, the outer bottom of the bag contacts the metal drum to form a conductive channel. Further explanation of the above technical solution: the conductive film of the bag body is composed of several material layers processed by co-extrusion or... A single-layer film formed by a composite process; further explanation of the above technical solution: the conductive film of the bag body consists of a protective layer and a conductive layer from the outside to the inside. The conductive film can be simplified according to actual usage requirements, without setting a high-barrier layer, so that the conductive film consists of a protective layer and a conductive layer from the outside to the inside, thereby reducing costs; further explanation of the above technical solution: the conductive inner liner bag is a replaceable flexible bag body; further explanation of the above technical solution: if the conductive inner liner bag is an open bag, its structure is that the bottom of the bag is sealed and the top of the bag is open. During installation, the top of the bag is folded over and fastened to the opening of the open bucket. The bag body is sealed by the bucket lid, or after the product is filled, the bag opening can be tied to seal the bag body. Furthermore, an air extraction valve can be added to the conductive bag body as needed to create a vacuum between the bag body and the barrel wall after installation, allowing the bag body to better adhere to the barrel wall; to further explain the above technical solution: if the conductive inner liner bag is a closed bag, its structure is such that both the bottom and top of the bag are sealed, and it can be combined and connected to the closed metal barrel through the connector of the conductive inner liner bag.

[0006] This invention features good electrostatic discharge, effectively avoids the degradation of barrier performance caused by moisture, effectively avoids the problem of conductive film embrittlement, and is easy to install and low in cost. Attached Figure Description

[0007] Figure 1 shows the combination of the metal drum and the conductive inner liner bag;

[0008] Figure 2 is a schematic diagram of the conductive inner lining bag;

[0009] Figure 3 shows the structure of the conductive thin film.

[0010] In the diagram: 1. Conductive inner lining bag; 2. Metal barrel body; 3. Metal barrel top cover; 4. Conductive inner lining bag opening flange; 5. Conductive inner lining bag bottom flange; 6. Conductive layer; 7. High barrier layer; 8. Protective layer. Detailed Implementation

[0011] The following description, in conjunction with the accompanying drawings, further illustrates the content of this utility model:

[0012] The diagram shows the structure of a metal drum and conductive inner liner bag, including: 1. Conductive inner liner bag; 2. Metal drum body; 3. Metal drum top cover; 4. Conductive inner liner bag opening flange; 5. Conductive inner liner bag bottom flange; 6. Conductive layer; 7. High barrier layer; and 8. Protective layer. The conductive inner liner bag is made of conductive film. From the outside in, the conductive film consists of a protective layer, a high barrier layer, another protective layer, and a conductive layer. The conductive layer is located inside the bag body and comes into contact with the packaged product. The outer protective layer and high barrier layer are both non-conductive conductive films. Conductive material is added only to the inner conductive layer, while other materials do not contain conductive material, thus preserving the original properties of the other materials. Furthermore, through the adjustment of the material layering, the moisture-sensitive barrier layer is well protected, which allows for a reduction in the material of the barrier layer (reducing costs). This approach does not increase the difficulty of processing and installing the conductive bag and may even reduce its cost.

[0013] Conductive bags typically have a certain resistance between their inner and outer layers, forming a conductive channel that releases charge upon contact with the metal container wall. Although only the inner layer contains conductive material, the molding process and installation method allow the inner conductive layer to be folded outwards to the bottom or outside of the bag, ensuring a conductive channel between the conductive bag and the metal container for charge release.

[0014] The above is a description of the basic principles of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A conductive inner liner bag for metal drums, characterized in that: The conductive inner liner bag is made of a conductive film, which is composed of several material layers. From the outside to the inside, the conductive film consists of a protective layer, a high-barrier layer, a protective layer, and a conductive layer. The conductive layer is located in the inner layer of the bag and is in contact with the packaged product. The outer protective layer and the high-barrier layer are both non-conductive. The conductive layer is also a heat-sealing layer. After the bottom of the bag is heat-sealed, an outer edge of the conductive layer is formed at the bottom of the bag. The conductive layer inside the bag is turned outward to the bottom or outside of the bag. After installation, the outer bottom of the bag contacts the metal drum to form a conductive channel.

2. The conductive inner liner bag for metal drums according to claim 1, characterized in that: The conductive film of the bag body is a single-layer film formed by co-extrusion or composite processes of several material layers.

3. The conductive inner liner bag for metal drums according to claim 1, characterized in that: The conductive film of the bag consists of a protective layer and a conductive layer from the outside to the inside.

4. A conductive inner liner bag for metal drums according to claim 1, characterized in that: The conductive inner liner bag is a replaceable flexible bag.

5. A conductive inner liner bag for metal drums according to claim 1, characterized in that: If the conductive inner liner bag is an open bag, its structure is that the bottom of the bag is sealed and the top of the bag is open. During installation, the top of the bag is folded over and fastened to the opening of the open bucket. The bag body is sealed by the bucket lid, or the bag opening can be tied after the product is filled to seal the bag body. If necessary, an air extraction valve can be added to the conductive bag body to create a vacuum between the bag body and the bucket wall after installation, so that the bag body can better adhere to the bucket wall.

6. A conductive inner liner bag for metal drums according to claim 1, characterized in that: If the conductive inner lining bag is a closed bag, its structure is such that both the bottom and top of the bag are sealed, and it can be combined and connected to a closed metal bucket through the connector of the conductive inner lining bag.

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