Recyclable nut packaging bag

Abstract

The utility model discloses a recyclable nut packaging bag which is provided with a first pressure-sensitive sealing strip and a second pressure-sensitive sealing strip, and a handle is arranged on the upper portion of the second pressure-sensitive sealing strip. A tearing opening is formed between the lifting handle and the second pressure-sensitive sealing strip; the printing layer is made of MDO longitudinal stretching polyethylene; the heat sealing layer is made of modified polyethylene; the first pressure-sensitive sealing strip and the second pressure-sensitive sealing strip are made of polyethylene and are 0.5-1.5 cm in width. The printing layer, the heat sealing layer and the pressure-sensitive sealing strip of the packaging bag are made of the same material, namely polyethylene, so that the packaging bag can be recycled after being used, the cost is reduced, and the requirements of environmental protection, energy conservation and carbon reduction are met.

Description

Technical Field

[0001] This utility model belongs to the field of food packaging bag technology, specifically relating to a recyclable nut packaging bag. Background Technology

[0002] Nuts are mostly irregularly shaped and have uneven parts such as sharp edges. Existing nut packaging bags mainly fall into two categories: 1. Resealable bags that are rectangular in shape, and 2. Resealable bags consisting only of a welded front, back, and bottom. While both types of bags offer good sealing, they have drawbacks: they are unstable and the bottom of the bag is easily scratched by the nuts.

[0003] Chinese patent CN204624165U discloses a nut packaging bag, including a front, a back, a side, and a bottom. A sealing strip is provided between the front and the back, and a tear-out is provided on the front and the back. The side has a first fold line and a second fold line that are connected. The folding directions of the first fold line and the second fold line are opposite. There are also two symmetrically arranged third fold lines on the side. The two third fold lines are perpendicular to each other, which reduces the risk of the nuts scratching the packaging bag.

[0004] Chinese patent CN205675429U discloses a novel nut packaging bag, comprising a front bag body, a rear bag body, two side bags, and a bottom bag. The two sides of the front and rear bag bodies are sealed to the two sides of the side bags, respectively. The four sides of the bottom bag are sealed to the bottom edges of the front, rear, and two side bags, respectively. A sealing strip is adhered to the upper part of the front bag body to seal the bag, and the portion of the bag body extending beyond the sealing strip is a folded section. The outer layer of the bag is a non-woven fabric layer, and the inner layer is a kraft paper layer, with a polyethylene film between the non-woven fabric layer and the kraft paper layer. It has advantages such as good sealing performance, excellent moisture resistance, and good breathability.

[0005] However, to meet various requirements such as barrier properties and printability, current nut packaging bags are mostly made of composite materials. A single package may contain various types of plastics, and even paper or metal materials. Therefore, once used, nut packaging bags can only be discarded and cannot be recycled, failing to meet energy conservation, carbon reduction, and environmental protection requirements. Furthermore, once the nut packaging bag is opened, exposure to air can easily cause the food to become damp, affecting not only the taste but also significantly reducing its shelf life. Damp and moldy nuts can also produce toxic substances; accidental ingestion can cause mild gastrointestinal discomfort such as abdominal pain and diarrhea, and in severe cases, liver damage and even death. Therefore, ensuring the airtight seal after opening is a pressing problem that needs to be solved for large-capacity nut packaging bags. Summary of the Invention

[0006] To address the aforementioned technical problems, this utility model provides a recyclable nut packaging bag. The printing layer, heat-sealing layer, and pressure-sensitive seal of the packaging bag are made of the same material—polyethylene, which allows the packaging bag to be recycled and reused after use, thus reducing costs.

[0007] To achieve the above objectives, this utility model provides a recyclable nut packaging bag, wherein the packaging bag is provided with a first pressure-sensitive seal and a second pressure-sensitive seal, and a handle is provided on the upper part of the second pressure-sensitive seal; a tear-out opening is provided between the handle and the second pressure-sensitive seal.

[0008] Preferably, there are two tear-out openings, symmetrically distributed on the left and right sides.

[0009] Preferably, the nut packaging bag consists of a printed layer and a heat-sealing layer.

[0010] More preferably, the thickness of the printed layer is 15-30 μm; and the thickness of the heat-sealing layer is 50-70 μm.

[0011] More preferably, the printed layer is made of MDO longitudinally stretched polyethylene; and the heat-sealing layer is made of modified polyethylene.

[0012] Preferably, the first pressure-sensitive seal is located on the inside front, back, and side of the packaging bag.

[0013] Preferably, the second pressure-sensitive seal is located on the inside front and back of the packaging bag, respectively.

[0014] More preferably, the first and second pressure-sensitive seals are made of polyethylene and have a width of 0.5-1.5 cm.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. The printing layer, heat-sealing layer, and pressure-sensitive seal are made of polyethylene material, which does not contain other materials and meets the requirements for plastic recycling. Therefore, after the packaging bag is used up, it can be recycled and reused after being processed by melting, stretching and other steps, which reduces costs and meets the requirements of environmental protection, energy conservation and carbon reduction.

[0017] 2. Two pressure-sensitive seals are provided. The first pressure-sensitive seal is distributed on the four sides of the packaging bag, which can maintain the self-standing design of the packaging bag when sealing it, thus improving stability. The second pressure-sensitive seal is located on the front and back of the packaging bag, which further seals the packaging bag, improves the sealing performance, extends the shelf life of the contents after opening, and prevents the contents from deteriorating. It is suitable for larger capacity nut packaging. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the membrane structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure after the first pressure-sensitive seal is opened.

[0021] In the diagram, 1 is the printed layer, 2 is the heat-sealing layer, 3 is the nut packaging bag, 4 is the first pressure-sensitive seal, 5 is the second pressure-sensitive seal, 6 is the handle, and 7 is the tear-off opening. Detailed Implementation

[0022] The technical solution of this utility model will be further explained below with reference to the accompanying drawings and specific embodiments. It is worth noting that the following embodiments are only preferred embodiments of this utility model and should not be construed as limiting this utility model. The protection scope of this utility model should be determined by the content of the claims. Modifications or substitutions made by those skilled in the art to the technical solution of this utility model without creative effort all fall within the protection scope of this utility model.

[0023] Example 1

[0024] A recyclable nut packaging bag, wherein the packaging bag 3 is provided with a first pressure-sensitive seal 4 and a second pressure-sensitive seal 5 for resealing after the packaging bag 3 is opened, thereby extending the shelf life of the contents; a handle 6 is provided on the upper part of the second pressure-sensitive seal 5 for easy transportation of the packaging bag 3; a tear-out 7 is provided between the handle 6 and the second pressure-sensitive seal 5 for easy opening of the packaging bag 3 by consumers.

[0025] Preferably, there are two tear-out openings 7, which are symmetrically distributed on the left and right sides.

[0026] Preferably, the nut packaging bag 3 consists of a printing layer 1 and a heat-sealing layer 2. The printing layer 1 is used to print ink and perform surface finishing, while the heat-sealing layer 2 is used to seal the contents.

[0027] More preferably, the thickness of the printing layer 1 is 15-30μm; the thickness of the heat-sealing layer 2 is 50-70μm, to prevent the nuts from scratching or leaking the packaging bag 3 and to extend the service life of the packaging bag 3.

[0028] More preferably, the printed layer 1 is made of MDO longitudinally stretched polyethylene; the heat-sealing layer 2 is made of modified polyethylene. Both the printed layer 1 and the heat-sealing layer 2 are composed of polyethylene, which allows the packaging bag 3 to be recycled and reused after being melted and stretched again, reducing resource waste and meeting the requirements of environmental protection, energy conservation and carbon reduction.

[0029] Preferably, the first pressure-sensitive seal 4 is located on the front, back and side of the inside of the packaging bag 3, which can seal the packaging bag 3 and ensure that the packaging bag 3 and the bottom maintain a basically consistent vertical structure, thereby improving the stability of placement.

[0030] Preferably, the second pressure-sensitive seal 5 is located on the inside front and back of the packaging bag 3, respectively, and the packaging bag 3 is sealed twice to further improve the sealing performance, extend the shelf life of the contents, and prevent them from getting damp and deteriorating.

[0031] Preferably, the first pressure-sensitive seal 4 and the second pressure-sensitive seal 5 are made of polyethylene and have a width of 0.5-1.5 cm. They can be recycled along with the printed layer 1 and the heat-sealing layer 2 for reuse.

Claims

1. A recyclable nut packaging bag, characterized in that: The packaging bag (3) is provided with a first pressure-sensitive seal (4) and a second pressure-sensitive seal (5), and a handle (6) is provided on the upper part of the second pressure-sensitive seal (5); a tear-out opening (7) is provided between the handle (6) and the second pressure-sensitive seal (5); the nut packaging bag (3) is composed of a printing layer (1) and a heat-sealing layer (2); the printing layer (1) is made of MDO longitudinally stretched polyethylene; the heat-sealing layer (2) is made of modified polyethylene.

2. The recyclable nut packaging bag according to claim 1, characterized in that: There are two tear openings (7), which are symmetrically distributed on the left and right.

3. The recyclable nut packaging bag according to claim 1, characterized in that: The thickness of the printed layer (1) is 15-30 μm; the thickness of the heat-sealing layer (2) is 50-70 μm.

4. A recyclable nut packaging bag according to claim 1, characterized in that: The first pressure-sensitive seal (4) is located on the front, back and side of the inside of the packaging bag (3).

5. A recyclable nut packaging bag according to claim 1, characterized in that: The second pressure-sensitive seal (5) is located on the front and back of the inside of the packaging bag (3).

6. A recyclable nut packaging bag according to claim 4 or 5, characterized in that: The first pressure-sensitive seal (4) and the second pressure-sensitive seal (5) are made of polyethylene and have a width of 0.5-1.5cm.

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