Kraft paper food packaging bag with good sealing performance

Abstract

The utility model discloses a kraft paper food packaging bag with good sealing performance, which comprises a first protective layer, a damp-proof layer and a second protective layer, the damp-proof layer is arranged in the first protective layer and is fixedly arranged on the inner wall surface of the first protective layer, the second protective layer is fixedly arranged on the inner wall surface of the damp-proof layer, and the first protective layer and the second protective layer are fixedly arranged on the inner wall surface of the damp-proof layer. According to the kraft paper food packaging bag with the good sealing performance, the first sealing strip is folded towards the second sealing strip, then the second sealing strip is folded towards the front wall face of the food packaging bag, the first sealing strip is folded towards the first sealing strip, and the second sealing strip is folded towards the front wall face of the food packaging bag; after folding is completed, the first sealing strips and the second sealing strips are fixed through mutual cooperation of the female buckles and the male buckles, air leakage of the first sealing strips or the second sealing strips in the using process is prevented, it is guaranteed that the interior of the food packaging bag does not leak air through cooperation of the two first sealing strips, and through secondary sealing of the two second sealing strips, the sealing effect is good. And the sealing performance in the food packaging bag is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of food packaging bags, in particular to a kraft paper food packaging bag with good sealing performance. Background Art

[0002] Kraft paper food packaging bags are usually used in the packaging of dry goods, nuts, candies, cakes and other foods. Its sealing performance is very important for the preservation and moisture-proof of food. The packaging bags are usually designed to be easy to open and close, such as zippers, self-sealing, etc., to facilitate consumers to take food and keep the food fresh. Kraft paper packaging bags are usually light and easy to carry, which is convenient for consumers to carry food out or travel. However, the existing kraft paper food packaging bags with good sealing performance still have certain defects, such as:

[0003] The "kraft paper packaging bag" with application number CN201720001116.6 includes a bag body, which includes a kraft paper layer, a transparent OPP layer is arranged outside the kraft paper layer, and the kraft paper layer includes an upper kraft paper layer, a lower kraft paper layer and a transparent plastic lining strip arranged between the upper kraft paper layer and the lower kraft paper layer. The upper kraft paper layer, the lower kraft paper layer and the transparent plastic lining strip are all bonded to the OPP layer through an adhesive layer. The kraft paper packaging bag cannot perform heat-insulating and moisture-proof treatment on the inside of the packaging bag, and cannot perform sealing treatment on the inside of the packaging bag. It is inconvenient to carry when in use, increases the labor burden of the user, and is not convenient for the user's daily use. Utility Model Content

[0004] The purpose of the utility model is to provide a kraft paper food packaging bag with good sealing performance, so as to solve the problems proposed in the above-mentioned background technology that the inside of the packaging bag cannot be insulated and moisture-proofed, the inside of the packaging bag cannot be sealed, it is inconvenient to carry when in use, the labor burden of the user is increased, and it is inconvenient for the user's daily use.

[0005] To achieve the above object, the utility model provides the following technical solutions: a kraft paper food packaging bag with good sealing performance, comprising a first protective layer and a moisture-proof layer, wherein the moisture-proof layer is arranged inside the first protective layer, and the moisture-proof layer is fixedly installed on the inner wall surface of the first protective layer;

[0006] A second protective layer, wherein the moisture-proof layer is provided inside the second protective layer, and the second protective layer is fixedly installed on the inner wall surface of the moisture-proof layer, and the first protective layer and the second protective layer are both made of a relatively tough kraft paper material;

[0007] A heat-insulating layer is provided inside the second protective layer, and the heat-insulating layer is fixedly installed on the inner wall surface of the second protective layer.

[0008] By adopting the above technical scheme, it is convenient to protect the food packaging bag through the first protective layer and the second protective layer, thereby ensuring the service life of the food packaging bag and preventing the food packaging bag from being broken due to external impact. The interior of the food packaging bag is moisture-proofed by the moisture-proof layer to prevent the stored items in the food packaging bag from rotting due to excessive moisture.

[0009] As a preferred technical solution of the utility model, a fixing bar is fixedly installed on the left upper top surface of the first protective layer, the moisture-proof layer and the second protective layer, and the fixing bar is symmetrically arranged about the center of the first protective layer.

[0010] The above technical solution makes it easy to insulate the inside of the food packaging bag through the insulation layer, ensuring that the temperature of the stored food will not rise or drop too much in a short period of time. The first protective layer, the moisture-proof layer and the second protective layer are fixed by the fixing strips to prevent the food packaging bag from falling apart.

[0011] As a preferred technical solution of the utility model, a first sealing strip is fixedly installed on the upper end of the inner rear wall surface of the two fixed strips, the first sealing strip is symmetrically arranged about the center of the first protective layer, and the two first sealing strips cooperate with each other.

[0012] By adopting the above technical solution, the cooperation of the two first sealing strips can ensure that the inside of the food packaging bag will not leak, thereby ensuring the sealing of the inside of the food packaging bag.

[0013] As a preferred technical solution of the utility model, a second sealing strip is fixedly installed on the lower end of the inner rear wall surface of the two fixed strips, the second sealing strips are symmetrically arranged about the center of the first protective layer, and the two second sealing strips cooperate with each other.

[0014] The adoption of the technical solution facilitates secondary sealing through the two second sealing strips, further ensuring the sealing inside the food packaging bag and preventing air leakage inside the food packaging bag.

[0015] As a preferred technical solution of the utility model, a female buckle, two female buckles are evenly and fixedly installed on the upper end of the rear wall surface of the first protective layer;

[0016] Sub-buckles: two sub-buckles are evenly and fixedly installed on the upper end of the front wall surface of the first protective layer, and the two mother buckles cooperate with the two sub-buckles.

[0017] By adopting the above technical solution, it is convenient to fold the first sealing strip toward the second sealing strip, and then fold the second sealing strip toward the front wall of the food packaging bag. After folding, the first sealing strip and the second sealing strip are fixed by the mutual cooperation of the mother buckle and the child buckle to prevent the first sealing strip or the second sealing strip from leaking during use.

[0018] As a preferred technical solution of the present invention, a handle is fixedly installed at the center of the upper end of the rear wall surface of the first protective layer.

[0019] By adopting the above technical solution, after the first sealing strip and the second sealing strip are folded, the food packaging bag can be grabbed by the handle, which is convenient for the user's daily use and reduces the labor burden of the user.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The kraft paper food packaging bag with good sealing performance is convenient for protecting the food packaging bag through the first protective layer and the second protective layer, thereby ensuring the service life of the food packaging bag and preventing the food packaging bag from being broken due to external impact. The moisture-proof layer is used to perform moisture-proof treatment on the inside of the food packaging bag to prevent the inside of the food packaging bag from being rotten due to excessive moisture.

[0022] 2. The kraft paper food packaging bag with good sealing performance is convenient for heat preservation treatment of the inside of the food packaging bag through the heat preservation layer, ensuring that the temperature of the stored food will not rise or fall too much in a short period of time. The first protective layer, the moisture-proof layer and the second protective layer are fixed by the fixing strips to prevent the food packaging bag from falling apart.

[0023] 3. The kraft paper food packaging bag with good sealing performance can be easily sealed by the cooperation of two first sealing strips to ensure that there is no air leakage inside the food packaging bag. The secondary sealing of the two second sealing strips ensures the sealing performance inside the food packaging bag to prevent air leakage inside the food packaging bag.

[0024] 4. This kraft paper food packaging bag with good sealing performance is convenient for folding the first sealing strip toward the second sealing strip, and then folding the second sealing strip toward the front wall of the food packaging bag. After folding, the first sealing strip and the second sealing strip are fixed by the mutual cooperation of the mother buckle and the child buckle to prevent the first sealing strip or the second sealing strip from leaking during use.

[0025] 5. The kraft paper food packaging bag with good sealing performance is convenient for users to grab the food packaging bag through the handle after the first sealing strip and the second sealing strip are folded, which is convenient for users' daily use and reduces the labor burden of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0028] Figure 3 This is a rear view structural diagram of the utility model;

[0029] Figure 4 This is a schematic diagram of the main view connection structure between the handle and the first protective layer of the utility model;

[0030] Figure 5 This is a schematic diagram of the three-dimensional structure of the first protective layer of the utility model.

[0031] In the figure: 1. First protective layer; 2. Moisture-proof layer; 3. Second protective layer; 4. Thermal insulation layer; 5. Fixing strip; 6. First sealing strip; 7. Second sealing strip; 8. Female buckle; 9. Male buckle; 10. Handle. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-5 The technical solution of the utility model is: a kraft paper food packaging bag with good sealing performance, comprising a first protective layer 1 and a moisture-proof layer 2. The moisture-proof layer 2 is arranged inside the first protective layer 1, and the moisture-proof layer 2 is fixedly installed on the inner wall surface of the first protective layer 1;

[0034] A second protective layer 3 is provided inside the moisture-proof layer 2. The second protective layer 3 is fixedly installed on the inner wall surface of the moisture-proof layer 2. Both the first protective layer 1 and the second protective layer 3 are made of kraft paper material with relatively tough characteristics;

[0035] Insulation layer 4 : A insulation layer 4 is arranged inside the second protective layer 3 , and the insulation layer 4 is fixedly installed on the inner wall surface of the second protective layer 3 .

[0036] A fixing strip 5 is fixedly installed on the left upper surfaces of the first protective layer 1 , the moisture-proof layer 2 and the second protective layer 3 , and the fixing strip 5 is symmetrically arranged about the center of the first protective layer 1 .

[0037] The first sealing strip 6 is fixedly installed on the upper ends of the inner rear walls of the two fixing strips 5 . The first sealing strips 6 are symmetrically arranged about the center of the first protective layer 1 , and the two first sealing strips 6 cooperate with each other.

[0038] The second sealing strip 7 is fixedly installed on the lower end of the inner rear wall surface of the two fixing strips 5. The second sealing strips 7 are symmetrically arranged about the center of the first protective layer 1, and the two second sealing strips 7 cooperate with each other.

[0039] Female buckles 8, two female buckles 8 are evenly and fixedly mounted on the upper end of the rear wall surface of the first protective layer 1;

[0040] Sub-buckles 9: two sub-buckles 9 are evenly and fixedly installed on the upper end of the front wall surface of the first protective layer 1, and the two female buckles 8 cooperate with the two sub-buckles 9.

[0041] A handle 10 is fixedly mounted at the center of the upper end of the rear wall surface of the first protective layer 1 .

[0042] Working principle: Before the equipment works, the user first opens the first protective layer 1 by folding it, and then presses the two first sealing strips 6 to match the first sealing strips 6 to ensure that the food packaging bag as a whole is airtight. Then the user needs to press the two second sealing strips 7 to match the second sealing strips 7 to further ensure the good sealing of the food packaging bag. Then, the user folds the first sealing strip 6 forward by folding the first sealing strip 6, and then folds the second sealing strip 7 forward. At this time, the sub-buckle 9 is fitted with the mother buckle 8. By pressing the mother buckle 8 into the sub-buckle 9, the mother buckle 8 is matched and fixed with the sub-buckle 9 to prevent the food packaging bag from falling apart. At this time, the handle 10 is located on the upper top surface of the food packaging bag, and the user can pull the handle 10 for the convenience of the user's daily use.

[0043] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A kraft paper food packaging bag with good sealing performance, comprising a first protective layer (1), characterized in that: Also includes: A moisture-proof layer (2), wherein the first protective layer (1) is provided with a moisture-proof layer (2), and the moisture-proof layer (2) is fixedly mounted on the inner wall surface of the first protective layer (1); A second protective layer (3), wherein the moisture-proof layer (2) is provided with the second protective layer (3), the second protective layer (3) is fixedly mounted on the inner wall surface of the moisture-proof layer (2), and the first protective layer (1) and the second protective layer (3) are both made of a relatively tough kraft paper material; A heat-insulating layer (4), wherein the interior of the second protective layer (3) is provided with a heat-insulating layer (4), and the heat-insulating layer (4) is fixedly mounted on the inner wall surface of the second protective layer (3).

2. A kraft paper food packaging bag with good sealing performance according to claim 1, characterized in that: Also included are: A fixing strip (5) is fixedly mounted on the left upper surfaces of the first protective layer (1), the moisture-proof layer (2) and the second protective layer (3), and the fixing strip (5) is symmetrically arranged with respect to the center of the first protective layer (1).

3. A kraft paper food packaging bag with good sealing performance according to claim 2, characterized in that: Also included are: A first sealing strip (6) is fixedly mounted on the upper ends of the inner rear walls of the two fixing strips (5), the first sealing strips (6) are symmetrically arranged about the center of the first protective layer (1), and the two first sealing strips (6) cooperate with each other.

4. A kraft paper food packaging bag with good sealing performance according to claim 3, characterized in that: Also included are: A second sealing strip (7) is fixedly mounted on the lower ends of the inner rear walls of the two fixing strips (5), the second sealing strips (7) are symmetrically arranged about the center of the first protective layer (1), and the two second sealing strips (7) cooperate with each other.

5. A kraft paper food packaging bag with good sealing performance according to claim 4, characterized in that: Also included are: Female buckles (8), two female buckles (8) are evenly and fixedly mounted on the upper end of the rear wall surface of the first protective layer (1); Sub-buttons (9), two sub-buttons (9) are evenly and fixedly mounted on the upper end of the front wall surface of the first protective layer (1), and the two female buckles (8) cooperate with the two sub-buttons (9).

6. A kraft paper food packaging bag with good sealing performance according to claim 5, characterized in that: Also included are: A handle (10) is fixedly mounted at the center of the upper end of the rear wall surface of the first protective layer (1).

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