High-barrier aluminum foil bag

Abstract

The utility model relates to the technical field of aluminum foil bags, in particular to a high-barrier aluminum foil bag which comprises a bag body, a sealing strip is connected to a bag opening of the bag body, a fiber coating is sprayed to the upper end of the interior of the bag body, a PP woven cloth layer is connected to the upper end of the interior of the bag body, and latticed reinforcing ribs are connected to the bottom end of the bag body. Aluminum sheet reinforcing sheets are connected to the four corners of the bottom end of the bag body. The strength of the bottom of the bag body is enhanced through the fiber coating and the PP woven cloth layer, the puncture resistance is improved, the strength of the four corners of the bottom of the bag body is enhanced through the aluminum sheet reinforcing pieces, and the portions prone to impact are reinforced, so that when articles are placed in the bag body, the bottom end of the bag body cannot be punctured, and the service life of the bag body is prolonged. And the latticed reinforcing ribs improve the tear resistance of the bottom of the bag body, increase the rigidity of the material and reduce bending deformation.

Description

Technical Field

[0001] This utility model relates to the field of aluminum foil bag technology, and in particular to a high-barrier aluminum foil bag. Background Technology

[0002] Aluminum foil bags are bags made by combining multiple plastic films using a bag-making machine. They are used to package food, pharmaceuticals, industrial products, and daily necessities. Aluminum foil bags are also called pure aluminum bags. Aluminum foil bag packaging usually refers to aluminum-plastic composite vacuum packaging bags. These products are suitable for moisture-proof, light-proof, and vacuum packaging of large precision machinery, chemical raw materials, and pharmaceutical intermediates. They often adopt a four-layer structure and have good water and oxygen barrier functions, and are not restricted.

[0003] When items are packaged in aluminum foil bags, the items slide down into the aluminum foil bag under their own weight and collide with the bottom of the bag. Since the bottom of the aluminum foil bag is not very strong, the bottom of the bag will be punctured after the items fall into it, thus damaging the aluminum foil bag. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing aluminum foil bags, such as poor bottom strength, which can cause punctures when items fall into the bag, thus compromising the quality of the aluminum foil bag. This invention proposes a high-barrier aluminum foil bag.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a high-barrier aluminum foil bag, including a bag body, a sealing strip connected to the bag opening, a fiber coating sprayed on the upper inside of the bag body, a PP woven fabric layer connected to the upper inside of the bag body, a mesh-like reinforcing rib connected to the bottom of the bag body, and aluminum sheet reinforcing pieces connected to the four corners of the bottom of the bag body.

[0007] Preferably, the bottom of the bag body has a square structure.

[0008] Preferably, the thickness of the PP woven fabric layer is 0.1-0.2 mm.

[0009] Preferably, the bottom of the bag is coated with a wear-resistant coating layer, which is a polyurethane wear-resistant coating layer.

[0010] Preferably, the bag opening is provided with a tear at the heat-sealed part, and a guide strip is connected to the upper end of the tear at the bag opening.

[0011] Preferably, the bag body includes a PET layer, an aluminum foil barrier layer is connected to the PET layer, a separator film is connected to the aluminum foil barrier layer, and a PE heat-sealing layer is connected to the separator film.

[0012] Preferably, the bottom of the bag body is provided with several elastic blocks, and a connecting strip connects each adjacent elastic block.

[0013] Preferably, the elastic block is a foam block.

[0014] The high-barrier aluminum foil bag proposed in this utility model has the following advantages:

[0015] The bottom of the bag is reinforced by fiber coating and PP woven fabric layer to improve puncture resistance. Several aluminum reinforcing sheets strengthen the four corners of the bottom of the bag and reinforce the impact-prone areas so that items will not be punctured when placed inside the bag. The mesh reinforcement improves the tear resistance of the bottom of the bag, increases the rigidity of the material, and reduces bending deformation. Attached Figure Description

[0016] Figure 1 This invention provides a structural schematic diagram of a high-barrier aluminum foil bag. Figure 1 ;

[0017] Figure 2 This invention provides a structural schematic diagram of a high-barrier aluminum foil bag. Figure 2 ;

[0018] Figure 3 This is a cross-sectional structural diagram of a high-barrier aluminum foil bag proposed in this utility model;

[0019] Figure 4 for Figure 3 A magnified view of the structure at point A above;

[0020] Figure 5 This is a cross-sectional structural diagram of the bag body in a high-barrier aluminum foil bag proposed in this utility model.

[0021] In the diagram: 1. Sealing strip; 2. Bag body; 3. Tear opening; 4. Guide strip; 5. PP woven fabric layer; 6. Mesh reinforcing ribs; 7. Aluminum sheet reinforcing sheet; 8. Elastic block; 9. Connecting strip; 10. Fiber coating; 21. PET layer; 22. Aluminum foil barrier layer; 23. Separator film; 24. PE heat-sealing layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1: Refer to Figure 1-4A high-barrier aluminum foil bag includes a bag body 2 with a square bottom structure to increase the load-bearing area and distribute pressure. The bottom of the bag body 2 is coated with a wear-resistant coating layer, which is a polyurethane wear-resistant coating layer, to reduce wear caused by transportation friction. A sealing strip 1 is connected to the bag opening of the bag body 2. A tear 3 is provided at the heat-sealed opening of the bag body 2. A guide strip 4 is connected to the upper end of the tear 3 at the opening of the bag body 2. When the bag body 2 is opened, it is torn from the tear 3, and the tear track is along the length of the guide strip 4 to ensure that the bag opening is neat after tearing. The upper interior of the bag body 2 is coated with a fiber coating 10, which is a Kevlar fiber coating. A PP woven fabric layer 5 with a thickness of 0.1-0.2mm is connected to the upper interior of the bag body 2. A mesh-like reinforcing rib 6 is connected to the bottom of the bag body 2. Aluminum sheet reinforcing pieces 7 are connected to the four corners of the bottom of the bag body 2.

[0024] Work process:

[0025] The bottom strength of the bag body 2 is enhanced by the fiber coating 10 and the PP woven fabric layer 5, which improves the puncture resistance. Several aluminum sheet reinforcing plates 7 enhance the strength at the four corners of the bottom of the bag body 2, and strengthen the impact-prone parts so that when items are put into the bag body 2, they will not be punctured at the bottom of the bag body 2. In addition, the mesh-like reinforcing ribs 6 improve the tear resistance of the bottom of the bag body 2, increase the rigidity of the material, and reduce bending deformation.

[0026] Example 2: The inner composite layer of the aluminum foil bag delaminates, resulting in a decrease in barrier performance. (Refer to...) Figure 5 As another preferred embodiment of this utility model, the difference from embodiment 1 is that the bag body 2 includes a PET layer 21, an aluminum foil barrier layer 22 is connected to the PET layer 21, a separator film 23 is connected to the aluminum foil barrier layer 22, and a PE heat-sealing layer 24 is connected to the separator film 23. By setting a double barrier of aluminum foil barrier layer 22 and separator film 23, the separator film 23 can still provide barrier after the aluminum foil barrier layer 22 is damaged, thereby improving the barrier performance of the aluminum foil bag.

[0027] Example 3: Items placed inside bag 2 are easily damaged by impact, see reference... Figure 4 As another preferred embodiment of this utility model, the difference from embodiment 1 is that the bottom of the inner end of the bag body 2 is provided with a number of elastic blocks 8, and a connecting strip 9 is connected between two adjacent elastic blocks 8. The elastic blocks 8 are foam blocks, and the elastic blocks 8 are connected and limited by the connecting strip 9, so that the elastic blocks 8 are located at the four corners of the bottom of the inner end of the bag body 2. When the item falls on the elastic blocks 8, the elastic blocks 8 provide elastic support for the item and prevent the item from being damaged.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-barrier aluminum foil bag, comprising a bag body (2), wherein a sealing strip (1) is connected to the opening of the bag body (2), characterized in that, in: The upper interior of the bag body (2) is coated with a fiber coating (10), the upper interior of the bag body (2) is connected with a PP woven fabric layer (5), the bottom of the bag body (2) is connected with a mesh-like reinforcing rib (6), and aluminum sheet reinforcing plates (7) are connected at the four corners of the bottom of the bag body (2).

2. The high-barrier aluminum foil bag according to claim 1, characterized in that, The bottom of the bag (2) has a square structure.

3. The high-barrier aluminum foil bag according to claim 1, characterized in that, The thickness of the PP woven fabric layer (5) is 0.1-0.2 mm.

4. The high-barrier aluminum foil bag according to claim 1, characterized in that, The bottom of the bag (2) is coated with a wear-resistant coating layer, which is a polyurethane wear-resistant coating layer.

5. The high-barrier aluminum foil bag according to claim 4, characterized in that, The bag body (2) has a tear opening (3) at the heat-sealed opening, and a guide strip (4) is connected to the upper end of the tear opening (3) at the opening of the bag body (2).

6. The high-barrier aluminum foil bag according to claim 1, characterized in that, The bag body (2) includes a PET layer (21), an aluminum foil barrier layer (22) is connected to the PET layer (21), a separator film (23) is connected to the aluminum foil barrier layer (22), and a PE heat-sealing layer (24) is connected to the separator film (23).

7. The high-barrier aluminum foil bag according to claim 1, characterized in that, The bottom of the bag body (2) is provided with several elastic blocks (8), and a connecting strip (9) is connected between two adjacent elastic blocks (8).

8. The high-barrier aluminum foil bag according to claim 7, characterized in that, The elastic block (8) is a foam block.

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