Kraft paper food packaging bag

Abstract

The utility model belongs to the technical field of food packaging bags, and discloses a kraft paper food packaging bag which comprises a packaging bag body, the packaging bag body comprises a base layer, a waterproof layer is arranged in the base layer and fixedly connected to the inner wall face of the base layer, and the outer wall of the base layer is connected with a buffer layer. The outer wall of the buffer layer is connected with a wear-resistant layer, an inflatable air bag is arranged in the buffer layer, and the inflatable air bag is filled with air. According to the scheme, the buffer layer is arranged on the outer wall of the base layer, the inflatable air bag is arranged in the buffer layer, air filled in the inflatable air bag can effectively absorb and disperse external force impact, and compared with a protection structure only depending on a kraft paper layer in the prior art, the anti-extrusion and anti-collision protection capacity of the packaging bag to internal food in the using process is remarkably improved; the food damage risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of food packaging bag technology, and in particular to a kraft paper food packaging bag. Background Technology

[0002] Kraft paper food packaging bags are environmentally friendly packaging materials made from high-quality kraft paper, primarily derived from natural wood pulp. They are biodegradable and recyclable, aligning with current green consumption concepts. These bags are tough and durable, offering some moisture resistance and breathability. They protect food from damage during transportation while also regulating internal and external humidity, making them suitable for packaging baked goods, nuts, dried goods, snacks, and pastries—category with relatively relaxed storage requirements. Furthermore, the rough surface and unique texture of kraft paper facilitate water-based ink printing, allowing for flexible and natural design styles, which are favored by businesses that value brand image. Their non-toxic, food-grade safety standards also give consumers greater peace of mind, gradually making them a mainstream choice in the food packaging industry that combines practicality and environmental friendliness.

[0003] A search of public announcement number CN222248343U reveals a kraft paper food packaging bag, comprising a first protective layer, a moisture-proof layer, and a second protective layer. The first protective layer contains an internal moisture-proof layer fixedly installed on its inner wall. Both the first and second protective layers are made of kraft paper, a material known for its durability. This kraft paper food packaging bag works by folding the first sealing strip towards a second sealing strip, then folding the second sealing strip towards the front wall of the bag. After folding, the first and second sealing strips are secured by the interplay of female and male fasteners, preventing air leakage during use. The cooperation of the two first sealing strips ensures no air leakage inside the food packaging bag, and the secondary sealing by the two second sealing strips ensures the airtightness of the bag's interior.

[0004] However, through exploration, the inventors have discovered that this technical solution still has at least the following defects:

[0005] Its protective structure mainly relies on a tough kraft paper layer. Although it has basic folding resistance, it lacks a professional cushioning design. When faced with external forces such as squeezing and collision during use, it is difficult to effectively protect the food inside, which may lead to food damage. On the other hand, the inner liner of the packaging bag is fixed and cannot be disassembled and replaced according to usage needs. When it is necessary to clean or repackage different foods, the operation is inconvenient and there is a risk of cross-contamination. Utility Model Content

[0006] The present invention aims to provide a kraft paper food packaging bag to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A kraft paper food packaging bag includes a main body, the main body of the packaging bag includes a base layer, a waterproof layer is provided inside the base layer, the waterproof layer is fixedly connected to the inner wall of the base layer, a cushioning layer is connected to the outer wall of the base layer, a wear-resistant layer is connected to the outer wall of the cushioning layer, and an inflatable air bladder is provided inside the cushioning layer, the inflatable air bladder is filled with air.

[0009] Preferably, the main body of the packaging bag has creases and a folded portion.

[0010] Preferably, the inner wall of the waterproof layer is connected to a connecting part, the connecting part is connected to a first half zipper, the inner wall of the waterproof layer is slidably connected to a detachable inner liner, the detachable inner liner is connected to a second half zipper, and the first half zipper and the second half zipper are detachably connected to a zipper pull.

[0011] Preferably, a support is connected to the bottom of the main body of the packaging bag.

[0012] Preferably, the main body of the packaging bag is provided with a lifting hole.

[0013] Preferably, the main body of the packaging bag is connected to an embedded plastic sealing strip.

[0014] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0015] (1) This utility model sets a buffer layer on the outer wall of the base layer and sets an inflatable airbag in the buffer layer. The air filled in the inflatable airbag can effectively absorb and disperse the impact of external force. Compared with the existing technology that only relies on the protective structure of kraft paper layer, it significantly improves the packaging bag's ability to resist compression and collision during use and reduces the risk of food damage.

[0016] (2) The creases and folds on the main body of the packaging bag, along with the lifting holes, provide users with a convenient way to hold the bag. Compared with the traditional packaging bag design without a dedicated lifting structure, this significantly improves the comfort and convenience during carrying.

[0017] (3) The inner wall of the waterproof layer is connected by the first half zipper of the connecting part and the second half zipper of the detachable inner liner to form a detachable structure. Users can replace or clean the inner liner as needed, which completely solves the problem of cleaning inconvenience and cross-contamination caused by the fixed inner liner of traditional packaging bags. It meets the packaging needs of different foods and improves the safety of use.

[0018] (4) The support part connected to the bottom of the main body of the packaging bag enables the packaging bag to maintain a stable standing position when placed. Compared with the defect of ordinary packaging bags being easy to tip over, it effectively avoids the problem of the contents spilling out due to the packaging bag tipping over, and also facilitates the display of goods. Attached Figure Description

[0019] Figure 1 A cross-sectional view of the main body of the packaging bag provided by this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 3 A longitudinal sectional view of the main body of the packaging bag provided by this utility model;

[0022] Figure 4 An enlarged schematic diagram of the connecting part provided by this utility model;

[0023] Reference numerals: 1. Wear-resistant layer; 2. Buffer layer; 3. Base layer; 4. Waterproof layer; 5. Main body of packaging bag; 6. Fold; 7. Crease; 8. Lifting hole; 9. Support part; 10. Connecting part; 11. First half zipper; 12. Removable inner liner; 13. Second half zipper; 14. Embedded plastic sealing strip; 15. Inflatable airbag. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0025] like Figures 1 to 4 The illustrated kraft paper food packaging bag includes a main body 5. (See figure) Figure 1 As shown, the main body 5 of the packaging bag includes a base layer 3, a waterproof layer 4 fixedly connected inside the base layer 3, a buffer layer 2 connected to the outer wall of the base layer 3, a wear-resistant layer 1 connected to the outer wall of the buffer layer 2, and several inflatable airbags 15 set inside the buffer layer 2. The airbags 15 are filled with air. When the packaging bag is squeezed or collided with the outside, the air in the inflatable airbags 15 can be compressed and deformed to absorb and disperse the impact force, effectively protecting the food inside. The wear-resistant layer 1 is made of high-strength material to resist friction and scratches. The kraft paper material of the base layer 3 provides basic support, and the waterproof layer 4 prevents external moisture from penetrating. The four-layer structure works together to improve the durability and moisture resistance of the packaging.

[0026] like Figure 2 As shown, the upper part of the main body 5 of the packaging bag has a crease 7, and the two sides of the main body 5 of the packaging bag have folding parts 6 at the same height as the crease 7. Through the crease 7 and the folding parts 6, the packaging bag can be folded in a specific direction, and is convenient to carry when used with the lifting hole 8.

[0027] like Figure 3 and Figure 4As shown, the inner wall of the waterproof layer 4 is connected to a connecting part 10, and the connecting part 10 is connected to a first half zipper 11. The inner wall of the waterproof layer 4 is slidably connected to a detachable inner liner 12, and the detachable inner liner 12 is connected to a second half zipper 13. The first half zipper 11 and the second half zipper 13 are detachably connected to a zipper pull. Pulling the zipper pull can separate or close the first half zipper 11 and the second half zipper 13, realizing the quick replacement of the detachable inner liner 12. The inner liner 12 is made of food-grade material, and the sliding connection design ensures that it fits tightly with the waterproof layer 4 after installation, preventing food from directly contacting the outer structure and improving food safety.

[0028] like Figure 2 As shown, the bottom of the main body 5 of the packaging bag is connected to a support part 9. The support part 9 is made of rigid material, which allows the packaging bag to stand stably on a flat surface and prevents it from tipping over and causing the food to spill. It is especially suitable for displaying or holding liquid foods.

[0029] like Figure 3 As shown, the top of the main body 5 of the packaging bag is connected to an embedded plastic sealing strip 14.

[0030] The specific implementation process is as follows:

[0031] The main body 5 of the packaging bag is composed of a wear-resistant layer 1, a cushioning layer 2, a base layer 3, and a waterproof layer 4 connected in sequence. The cushioning layer 2 contains an inflatable airbag 15 filled with air, which absorbs and disperses impact force during compression and collision, protecting the food. The base layer 3 uses kraft paper to provide basic support, and the waterproof layer 4 prevents moisture penetration. The upper part of the main body 5 has creases 7 and folds 6, along with a lifting hole 8 for easy use. The inner wall of the waterproof layer 4 connects to the second half of the inner liner 12 via a first half zipper 11 connected by a connecting part 10, allowing for quick removal and replacement of the inner liner. The bottom support part 9 is made of rigid material, ensuring the packaging bag stands stably and preventing tipping. The top of the main body 5 is connected to an embedded plastic sealing strip 14, which presses together to enhance the seal when closed.

[0032] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A kraft food packaging bag characterized by: The packaging bag body (5) includes a base layer (3), a waterproof layer (4) is provided inside the base layer (3), the waterproof layer (4) is fixedly connected to the inner wall of the base layer (3), a buffer layer (2) is connected to the outer wall of the base layer (3), a wear-resistant layer (1) is connected to the outer wall of the buffer layer (2), and an inflatable airbag (15) is provided inside the buffer layer (2), the inflatable airbag (15) is filled with air.

2. A kraft paper food packaging bag as claimed in claim 1, characterized in that: The main body of the packaging bag (5) has creases (7) and folds (6).

3. A kraft paper food packaging bag as claimed in claim 1, characterized in that: The inner wall of the waterproof layer (4) is connected to a connecting part (10), the connecting part (10) is connected to a first half zipper (11), the inner wall of the waterproof layer (4) is slidably connected to a detachable inner liner (12), the detachable inner liner (12) is connected to a second half zipper (13), and the first half zipper (11) and the second half zipper (13) are detachably connected to a zipper pull.

4. A kraft paper food packaging bag as defined in claim 1, wherein: The bottom of the main body (5) of the packaging bag is connected to a support (9).

5. A kraft food packaging bag as defined in claim 1, wherein: The main body of the packaging bag (5) is provided with a lifting hole (8).

6. A kraft paper food packaging bag as described in claim 1, characterized in that: The main body of the packaging bag (5) is connected to an embedded plastic sealing strip (14).

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