Packaging bag

Abstract

The utility model belongs to the technical field of packaging, and discloses a packaging bag. The packaging bag comprises a bag body, a cover plate and flanges, an opening is formed in the side face of the bag body, the bag body further comprises a bottom face and two side faces which define the opening, and the two side faces and the bottom face are connected and arranged at intervals; the cover plate is rotationally connected with the bottom surface to close or open the opening; the flanges are connected with the side faces and the cover plate so as to prevent liquid from leaking between the cover plate and the side faces. The side face of the packaging bag is open, so that food boxes and other objects can be conveniently pushed into the packaging bag from the side face and are more convenient to load and take out; the cover plate is provided with the opening, and the flange is arranged between the cover plate and the opening, so that food liquid can be effectively prevented from leaking, good sealing performance can still be kept even if the cover plate is opened and closed for multiple times, more reliable packaging protection is provided for food, the quality and safety of the food are ensured, and the requirement of consumers for high-quality food packaging is met.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a packaging bag. Background Art

[0002] In today's packaging industry, the selection and design of packaging bags are crucial. With the improvement of people's living standards and the high attention to food safety, the requirements for food packaging are becoming increasingly strict.

[0003] Most of the packaging bags commonly seen in the market in the fields of food, takeout, catering, etc. are open at the top. This design is convenient for placing drinks. However, there are many inconveniences when placing items such as lunch boxes. Moreover, during the loading and unloading process, the packaging bags with open tops are likely to cause damage to the items. Therefore, the packaging bags with side openings have gradually become the mainstream in the market. However, the opening method of the packaging bags with side openings lacks effective anti-leakage measures. When the packaging bag contains liquid foods (such as soups, sauces, etc.) or foods with more moisture, during handling, storage or consumption, it is extremely easy to leak from the opening, polluting the surrounding environment and affecting the hygiene and safety of the food.

[0004] Therefore, there is an urgent need for a packaging bag at present to solve the problem that the packaging bag with a side opening is prone to leakage. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a packaging bag, which is convenient for taking and placing lunch boxes, can avoid the spillage of the soup of the unfastened lunch box, and better ensures the sealed state of the packaging bag.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A bag body, an opening is formed on the side of the bag body. The bag body includes a bottom surface and two side surfaces that enclose the opening. The two side surfaces are connected to the bottom surface and are spaced apart.

[0008] A cover plate, the cover plate is rotatably connected to the bottom surface to close or open the opening.

[0009] A baffle, the baffle is connected to both the side surface and the cover plate to prevent liquid from leaking between the cover plate and the side surface.

[0010] As an optional solution of the packaging bag, the baffle can be bent as the cover plate rotates. When the cover plate rotates to be in the same plane as the bottom surface, the baffle flattens and is perpendicular to the cover plate.

[0011] As an optional solution of the packaging bag, the length of the first connecting edge of the baffle connected to the side surface is greater than or equal to half of the height of the side surface, and the length of the second connecting edge of the baffle connected to the cover plate is greater than or equal to half of the length of the side of the cover plate connected to the second connecting edge.

[0012] As an alternative to the packaging bag, the edge guard is provided with at least one crease, and when the cover plate is closed, the edge guard bends inward according to the crease.

[0013] As an alternative to the packaging bag, the edge guard is provided with one such crease, and the crease is located at the angular bisector of the first connecting edge and the second connecting edge.

[0014] As an alternative to the packaging bag, the packaging bag includes a limiting structure, and when the cover plate closes the opening, the limiting structure limits the edge guard so that the edge guard fits against the cover plate.

[0015] As an alternative to the packaging bag, the packaging bag includes a box, the box is arranged inside the bag body, the side wall of the box forms the limiting structure, and when the cover plate closes the opening, the box abuts against the edge guard to limit the edge guard.

[0016] As an alternative to the packaging bag, the limiting structure includes a limiting block, the limiting block is arranged inside the side surface, and when the cover plate closes the opening, the limiting block abuts against the edge guard to limit the edge guard so that the edge guard fits against the cover plate.

[0017] As an alternative to the packaging bag, the packaging bag is integrally formed from a flat plate member.

[0018] As an alternative to the packaging bag, the packaging bag is provided with an observation opening.

[0019] Beneficial effects:

[0020] The purpose of this solution is to provide a packaging bag with an opening on the side surface of the packaging bag, which is convenient for items such as lunch boxes to be pushed into the packaging bag from the side, making it more convenient to load and unload; and there is an edge guard between the cover plate and the opening, which can block the gap between the cover plate and the side surface. Even after multiple openings and closings, it can still effectively prevent the leakage of food liquids, provide more reliable packaging protection for food, ensure the quality and safety of food, and meet the needs of consumers for high-quality food packaging. Description of the Drawings

[0021] Figure 1 is an axonometric view of a packaging bag of the present utility model with a box installed;

[0022] Figure 2 is an axonometric view of a packaging bag of the present utility model;

[0023] Figure 3 is another axonometric view of a packaging bag of the present utility model;

[0024] Figure 4 is an exploded view of a packaging bag of the present utility model.

[0025] In the figure:

[0026] 1 - Bag body; 11 - Top surface; 12 - Bottom surface; 13 - Side surface; 14 - Sealing surface; 15 - Opening; 16 - Observation port; 17 - Handle; 131 - Limit stop block;

[0027] 2 - Baffle edge; 21 - Crease; 22 - First connecting edge; 23 - Second connecting edge;

[0028] 3 - Cover plate; 31 - Sealing edge; 311 - Sealing rubber strip; 4 - Box. Specific embodiments

[0029] The following further describes the present utility model in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0030] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "above the", and "on the" second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below the", and "under the" second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0032] In the description of this embodiment, the orientation or positional relationship terms such as "above" and "below" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0033] This embodiment provides a packaging bag for containing lunch boxes and the like. As Figures 1 to 3As shown, the packaging bag includes a bag body 1, a baffle 2, and a cover plate 3. The bag body 1 is used to hold items, and the cover plate 3 is used to seal the held items. A baffle 2 is provided between the bag body 1 and the cover plate 3, which can block the gap between the cover plate 3 and the bag body 1 to ensure that the liquid in the bag body 1 does not leak out. Specifically, an opening 15 is formed on the side of the bag body 1. The bag body 1 includes a bottom surface 12 and two side surfaces 13 that enclose the opening 15. The two side surfaces 13 are connected to the bottom surface 12 and are spaced apart; the cover plate 3 is rotatably connected to the bottom surface 12 to close or open the opening 15; the baffle 2 is connected to both the side surface 13 and the cover plate 3 to prevent liquid from leaking between the cover plate 3 and the side surface 13.

[0034] Further, in this embodiment, the bag body 1 further includes a top surface 11 and a sealing surface 14. The bottom surface 12, the two side surfaces 13, the top surface 11, and the sealing surface 14 form the bag body 1. The bag body 1 is a cube with an opening 15 on one side, which is convenient for holding regularly shaped items.

[0035] It should be noted that the cross-section of the above-mentioned bag body 1 is rectangular and has a standard shape. Only one side surface 13 is provided on each side of the bag body 1; in some embodiments, the cross-section of the bag body 1 can also be other shapes, such as triangular, hexagonal, etc. At this time, there may be one side surface 13 or two connected side surfaces 13 with an included angle or multiple side surfaces 13 on each side of the bag body 1. The first connecting edge 22 of the baffle 2 is at least connected to the lowermost side surface 13 of the bag body 1 to ensure that the liquid in the bag body 1 does not leak out.

[0036] As Figure 1 shown, the baffle 2 can be bent as the cover plate 3 rotates. When the cover plate 3 rotates to be in the same plane as the bottom surface 12, the baffle 2 flattens and is perpendicular to the cover plate 3. At this time, during the process of loading and unloading the held items, the baffle 2 does not obstruct or interfere with the held items. The baffle 2 plays a guiding role for the held items, facilitating the held items to align with the opening 15 and enter the bag body 1 along the side edge 13.

[0037] In this embodiment, the packaging bag is integrally formed from a flat plate, which can simplify the production process and reduce material loss. There are various ways of integrally forming the packaging bag, and no specific limitations are made. Refer to Figure 4 to describe a specific way of integrally forming the packaging bag. The sealing surface 14 is bent upward along the bottom surface 12, and the top surface 11 is bent downward along the sealing surface 14. At this time, the top surface 11 is parallel to the bottom surface 12. The side surface 13 connected to the top surface 11 is bent downward, and the side surface 13 connected to the bottom surface 12 is bent upward. The intersecting side surfaces 13 are heat-sealed. The redundant surfaces generated by the bending are bent along the edge of the sealing surface 14 and attached to the side surface 13 and fixed. The cover plate 3 is located on the opposite side of the sealing surface 14 and is bent upward along the bottom surface 12. The cover plate 3 is rotatably connected to the bottom surface 12 to close or open the opening 15. The upper surface of the cover plate 3 is turned over once to form a sealing edge 31.

[0038] It should be noted that although the side 13 of the bag body 1 is formed by heat-sealing two parts, it still belongs to the bag body 1 with the above-mentioned one side 13. Moreover, the two parts forming the side 13 of the flat plate member may not be separated. That is to say, the complete side 13 is connected to the top surface 11, and the side 13 is adhesively fixed to the bottom surface 12, or the complete side 13 is connected to the bottom surface 12, and the side 13 is adhesively fixed to the top surface 11.

[0039] A sealing strip 311 is provided on the sealing edge 31. When the cover plate 3 closes the opening 15, the sealing edge 31 is bent and fitted to the top surface 11, and the sealing strip 311 is adhered to the top surface 11 to realize the closing of the opening 15. The width of the sealing strip 311 is equal to the width of the sealing edge 31, so that the sealing edge 31 completely fits on the top surface 11. The closed packaging bag is not easily damaged, and the operation is convenient. It can be quickly pasted, firmly pasted, not easily fallen off, and can ensure the safety of the contained items. The pasting method can also adopt Velcro, which can be reused, still maintains good adhesion and stability after multiple openings and closings, is firm and reliable, and has a long service life.

[0040] Further, the baffle 2 includes a first connecting edge 22 and a second connecting edge 23 that are connected and arranged at an angle. The first connecting edge 22 is connected to the side 13, and the second connecting edge 23 is connected to the cover plate 3. The length of the first connecting edge 22 is greater than or equal to half of the height of the side 13, and the length of the second connecting edge 23 is greater than or equal to half of the side length of the cover plate 3 connected to the second connecting edge 23. The height of the side 13 mentioned here specifically refers to the height of the side 13 connecting the bottom surface 12 and the top surface 11, that is, the distance from the bottom surface 12 to the top surface 11. The side length of the cover plate 3 specifically refers to the side length of the side of the cover plate 3 connected to the baffle 2. The lengths of the first connecting edge 22 and the second connecting edge 23 ensure the shielding range of the gap between the baffle 2 for the bag body 1 and the cover plate 3, thereby ensuring the sealing performance of the packaging bag.

[0041] In some embodiments, the length of the first connecting edge 22 is equal to half of the height of the side 13, and the length of the second connecting edge 23 is greater than half of the side length of the cover plate 3 connected to the second connecting edge 23. When a part of the side 13 is connected to the top surface 11 and another part of the side 13 is connected to the bottom surface 12, the length of the first connecting edge 22 is equal to the height of the part of the side 13 connected to the bottom surface 12. Generally speaking, the side 13 is evenly divided into two parts to save materials. Therefore, the length of the first connecting edge 22 is equal to half of the height of the side 13, and the length of the second connecting edge 23 is 100%, 90%, 80%, 70% or 60% of the side length of the cover plate 3. The connection range of the second connecting edge 23 to the cover plate 3 is relatively large. When the cover plate 3 is opened, the baffle 2 can still play a role in preventing liquid from leaking out.

[0042] In some embodiments, the length of the second connecting edge 23 is equal to half the length of the side connecting the cover plate 3 and the second connecting edge 23, and the length of the first connecting edge 22 is greater than half the height of the side 13. The first connecting edge 22 is longer, so that the connection between the retaining edge 2 and the side 13 is more secure, and can better withstand the pressure of the liquid and prevent liquid from overflowing. The longer first connecting edge 22 provides stable support for the retaining edge 2, so that the entire structure is not easily deformed or loosened under the impact of the liquid. The second connecting edge 23 of reasonable length ensures the connection strength without causing excessive burden on the overall structure, which helps to maintain the stability of the structure. The length of the first connecting edge 22 is 100%, 90%, 80%, 70% or 60% of the height of the side 13.

[0043] In some embodiments, the length of the first connecting edge 22 is greater than half of the height of the side 13, and the length of the second connecting edge 23 is greater than half of the length of the side of the cover plate 3 connected to the second connecting edge 23. The longer rib 2 can provide a larger contact area and connection strength, so that the rib 2 can better withstand the pressure of the liquid, maintain a stable blocking state, and improve the reliability of preventing liquid leakage. The length of the first connecting edge 22 is 100%, 90%, 80%, 70% or 60% of the height of the side 13, and the length of the second connecting edge 23 is 100%, 90%, 80%, 70% or 60% of the length of the side of the cover plate 3.

[0044] In this embodiment, Figures 1 to 3 As shown, the length of the first connecting edge 22 is half of the height of the side 13, and the length of the second connecting edge 23 is half of the length of the side connecting the cover plate 3 and the second connecting edge 23. Under the premise of ensuring sufficient sealing space around the bottom of the packaging bag, the material usage of the packaging bag can be saved.

[0045] Furthermore, if Figures 1 to 2 As shown, the sidewall 2 is provided with at least one fold 21, and when the cover plate 3 is closed, the sidewall 2 is bent inwardly according to the fold 21. After the cover plate 3 is closed, the sidewall 2 is bent at the fold 21 to prevent the sidewall 2 from exerting a certain force on the cover plate 3 due to deformation, thereby causing the cover plate 3 to tilt, so that the cover plate 3 fits better with the bag body 1 and enhances the sealing of the packaging bag. Specifically, the intersection of the first connecting edge 22 and the second connecting edge 23 is the end point of one end of the fold 21, and there can be at least one fold 21.

[0046] Specifically, the sidewall 2 is provided with a fold 21, and the fold 21 is located at the angle bisector of the first connecting edge 22 and the second connecting edge 23, so that the sealing performance of the packaging bag is stronger. When the sidewall 2 is bent at the fold 21, the parts of the sidewall 2 located on both sides of the fold 21 can fit together, reducing the size of the space occupied inside the bag body 1 and avoiding affecting the items contained in the bag body 1.

[0047] Furthermore, as Figures 1 to 2 shown, the packaging bag includes a limiting structure. When the cover plate 3 closes the opening 15, the limiting structure limits the edge 2, so that the edge 2 fits against the cover plate 3, avoiding the folded edge 2 from tilting towards the inside of the bag body 1 and damaging the item to be contained.

[0048] In some embodiments, the packaging bag includes a box 4. The box 4 is arranged inside the bag body 1. The side wall of the box 4 forms a limiting structure. When the cover plate 3 closes the opening 15, the box 4 abuts against the edge 2 to limit the edge 2, so that the folded edge 2 fits against the cover plate 3, avoiding the folded edge 2 from tilting towards the inside of the bag body 1 and damaging the item to be contained.

[0049] In some embodiments, the limiting structure includes a limiting block 131. The limiting block 131 is arranged inside the side surface 13. When the cover plate 3 closes the opening 15, the limiting block 131 abuts against the edge 2 to limit the edge 2, so that the edge 2 fits against the cover plate 3, avoiding the tip of the folded edge 2 from contacting the item to be contained and thus damaging the item to be contained. The limiting block 131 is close to the first connecting edge 22. Considering the thickness of the folded edge 2, there is a small gap between the limiting block 131 and the first connecting edge 22, avoiding that after the cover plate 3 is closed, the folded edge 2 causes the cover plate 3 to bulge, resulting in poor sealing between the cover plate 3 and the opening 15. The limiting block 131 can be arranged in one or more along the direction of the first connecting edge 22. When the limiting block 131 is arranged as one, the limiting block 131 is located at any position of the height of the first connecting edge 22; when the limiting block 131 is arranged as two or more, multiple limiting blocks 131 are arranged equidistantly along the first connecting edge 22 on the side surface 13.

[0050] In this embodiment, the packaging bag is provided with an observation opening 16 for facilitating the observation of the item to be contained. The observation opening 16 is arranged on the bag body 1 or the cover plate 3, and can be arranged on the side surface 13, the top surface 11 or the sealing surface 14 of the bag body 1. A hole is cut out on the bag body 1 or the cover plate 3 as the observation opening 16, or the observation opening 16 is made of a visible transparent material. As in this embodiment, as Figure 3 shown, the observation opening 16 is arranged at the center position of the sealing surface 14, presenting a rectangle, and the item to be contained can be observed through the observation opening 16.

[0051] In this embodiment, the bag body 1 is provided with a handle 17 for facilitating carrying and improving the convenience of carrying. A handle 17 is arranged on the top surface 11, with a simple structure, low manufacturing cost and simple production process. As Figures 1 to 3As shown, handles 17 are respectively installed on the two sides 13. After closing the bag for holding items, lift the handles 17 to carry the packaging bag. The force is more evenly distributed, which can better disperse the weight of the packaging bag, reduce the hand pressure, especially suitable for heavier items to be held, increase the stability, make the packaging bag more balanced during carrying, and not easy to shake or tilt. The handles 17 can be respectively arranged on the sealing surface 14 and the cover plate 3 to further strengthen the sealing of the packaging bag when carrying.

[0052] The material of the packaging bag has a heat preservation function, which is not specifically limited here. For example, non-woven fabric has the characteristics of heat preservation and cold preservation, waterproof and oil-proof, and can be reused. The packaging bag can be reused and modified secondly according to needs.

[0053] When placing the items to be held, first rotate the cover plate 3 to be in the same plane as the bottom surface 12, and the baffle 2 is flattened and perpendicular to the cover plate 3. Place the items to be held into the bag body 1 along the two side baffles 2 through the opening 15. Rotate the cover plate 3 to fit with the opening 15. At the same time, the baffle 2 is bent along the crease 21, and the limiting structure makes the baffle 2 fit with the cover plate 3. The sealing edge 31 at the upper end of the cover plate 3 is bent downward, and the sealing strip 311 is adhered to the top surface 11 to close the opening 15, completing the placement of the items to be held.

[0054] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A packaging bag, characterized in that, Comprising: A bag body (1), an opening (15) is formed on the side of the bag body (1), the bag body (1) includes a bottom surface (12) and two side surfaces (13) that enclose the opening (15), and the two side surfaces (13) are connected to and spaced from the bottom surface (12); A cover plate (3), the cover plate (3) is rotatably connected to the bottom surface (12) to close or open the opening (15); A baffle (2), the baffle (2) is connected to both the side surface (13) and the cover plate (3) to prevent liquid from leaking between the cover plate (3) and the side surface (13).

2. The packaging bag according to claim 1, wherein The baffle (2) can be bent as the cover plate (3) rotates. When the cover plate (3) rotates to be in the same plane as the bottom surface (12), the baffle (2) flattens and is perpendicular to the cover plate (3).

3. The packaging bag according to claim 1, characterized in that, The length of the first connecting edge (22) where the baffle (2) is connected to the side surface (13) is greater than or equal to half of the height of the side surface (13), and the length of the second connecting edge (23) where the baffle (2) is connected to the cover plate (3) is greater than or equal to half of the length of the side of the cover plate (3) connected to the second connecting edge (23).

4. The packaging bag according to claim 3, characterized in that, The baffle (2) is provided with at least one crease (21). When the cover plate (3) is closed, the baffle (2) bends inward according to the crease (21).

5. The packaging bag according to claim 4, wherein The baffle (2) is provided with one crease (21), and the crease (21) is located at the angular bisector of the first connecting edge (22) and the second connecting edge (23).

6. The packaging bag according to claim 1, wherein The packaging bag includes a limiting structure. When the cover plate (3) closes the opening (15), the limiting structure limits the baffle (2) to make the baffle (2) fit the cover plate (3).

7. The packaging bag according to claim 6, characterized in that, The packaging bag includes a box (4), the box (4) is arranged inside the bag body (1), the side wall of the box (4) forms the limiting structure, and when the cover plate (3) closes the opening (15), the box (4) abuts against the baffle (2) to limit the baffle (2).

8. The packaging bag according to claim 6, characterized in that, The limiting structure includes a limiting block (131), the limiting block (131) is arranged inside the side surface (13), and when the cover plate (3) closes the opening (15), the limiting block (131) abuts against the baffle (2) to limit the baffle (2) to make the baffle (2) fit the cover plate (3).

9. The packaging bag according to any one of claims 1-8, characterized in that, The packaging bag is integrally formed from a flat plate member.

10. The packaging bag according to any one of claims 1-8, characterized in that, The packaging bag is provided with an observation port (16).

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