Packaging bag

Abstract

The utility model discloses a kind of packaging bags, including the bag body with containing cavity, bag body includes bottom surface, and the side wall extending around the circumferential side edge of bottom surface and along the height direction of bag body, side wall includes a pair of front surface spaced apart along the width direction of bag body, and a pair of side surface respectively connecting the corresponding side edge of a pair of front surface in the width direction of bag body.And, at least one limiting piece is provided in bag body, at least one connecting portion is formed on the inner surface of side wall, each limiting piece is connected to corresponding connecting portion, and switches in the folding state of bending towards the inner surface where connecting portion is located and the unfolded state parallel to bottom surface.Limiting portion on the limiting piece in unfolded state can surround the corresponding part of the periphery of article, improve the stability of fragile article placement, and when containing other articles, limiting piece can be switched to folding state, so that bag body has regular containing cavity, ensure that packaging bag has better loading capacity.

Description

Technical Field

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

[0002] With the development of society and the economy, packaging bags have become an indispensable and commonly used tool in modern society. From packaging small items for daily shopping to transporting large quantities of goods in express logistics, the application scenarios of packaging bags are extremely wide, and people's requirements for packaging bags are also getting higher and higher.

[0003] Packaging bags typically consist of a pair of front panels, a pair of side panels, and a bottom. Generally, the front and bottom panels are connected, while the side panels are connected to the bottom via a connecting structure. This, together with the front, side, and bottom panels, forms a cavity to hold the contents. However, when fragile items such as wine bottles, glass cups, or porcelain vases are packed into these bags, they are prone to shifting during transportation, loading, unloading, or stacking. This is especially true when the bag contains multiple fragile items; collisions and compression between these items can lead to breakage. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem in the prior art that when packaging bags are used to hold items, especially multiple fragile items, they are prone to collision or compression, leading to breakage of the fragile items.

[0005] To solve the above-mentioned technical problems, the present invention discloses a packaging bag, which includes a bag body having a cavity. The bag body includes a bottom surface and side walls that surround the peripheral edge of the bottom surface and extend along the height direction of the bag body. The side walls include a pair of front surfaces spaced apart along the width direction of the bag body and a pair of side surfaces that are respectively connected to the corresponding side edges of the pair of front surfaces in the width direction of the bag body.

[0006] Furthermore, the bag body is provided with at least one limiting member, which is arranged at intervals along the height direction. The inner surface of the side wall is formed with at least one connecting part. Each limiting member is connected to the corresponding connecting part and switches between a folded state bent toward the inner surface of the connecting part and an unfolded state parallel to the bottom surface.

[0007] Each limiting member has a hollow limiting part. The item is placed in the receiving cavity along the height direction, and the limiting part of the limiting member in the unfolded state surrounds the corresponding part of the item.

[0008] Using the above technical solution, this packaging bag has at least one limiting component inside. When fragile items, such as glass bottles, are placed inside the bag, at least one limiting component can be in an unfolded state. The limiting part of the component surrounds the corresponding part of the item, improving the stability of the glass bottle inside the bag. Even during transportation, the glass bottle will not tip over, greatly reducing the risk of fragile items breaking inside the bag. When the packaging bag contains other items, especially large, fluffy toys, the limiting components can be switched to a folded state, creating a regular cavity inside the bag that can hold larger items, ensuring the packaging bag has good loading capacity.

[0009] In summary, when this type of packaging bag contains fragile items, it can limit the movement of the fragile items through at least one limiting component, thereby improving the safety of containing fragile items. When containing other items, at least one limiting component is folded to ensure that the bag's accommodating cavity can accommodate larger items.

[0010] The present invention discloses a packaging bag, wherein at least one connecting portion is located on one of the inner surfaces of a pair of front faces and is arranged at intervals along the height direction.

[0011] Furthermore, indentations extending along the height direction are formed in the middle of the width direction of each pair of sides, and the bag can be folded along the indentations.

[0012] Using the above technical solution, the limiting component is connected to the inner surface of the front side through the connecting part. At the same time, indentations extending along the height direction can be set on a pair of sides. When the bag body is folded along the indentations of a pair of sides, the pair of front sides will move closer to each other. Similarly, the limiting component can also be folded and attached to the inner surface of a front side. The folding of the two works together to greatly reduce the space occupied by the packaging bag when it is not in use, and facilitate the storage and transportation of the packaging bag.

[0013] Furthermore, the folding or unfolding process of the limiting member only acts on the connection position between itself and the connecting part, and the range of motion is concentrated on the inner surface of the front, without affecting the folding along the indentation on the side.

[0014] The present invention discloses a packaging bag, wherein the limiting member includes a limiting plate, the limiting plate is connected to a corresponding connecting part on one side in the width direction, and the limiting plate can rotate around the edge of the side connected to the connecting part.

[0015] Among them, the limiting plate extends outward from the side corresponding to the connecting part to form an extension plate extending along the length direction of the bag body. The extension plate is attached and fixed to the corresponding connecting part, and a bending crease extending along the length direction is formed between the limiting plate and the extension plate, which can rotate around the crease.

[0016] Using the above technical solution, the limiting plate has a simple structure and low processing cost. In the folded state, it can fit along the crease to the inner surface where the connecting part is located and overlap with the extension plate, taking up almost no extra space inside the bag and not affecting the packing of large items. Furthermore, the limiting plate is connected to the connecting part through the extension plate, ensuring a large connection area between the limiting plate and the inner surface of the front, preventing the limiting plate from falling off or loosening during use.

[0017] The present invention discloses a packaging bag, wherein the limiting part is configured as: at least one limiting hole that penetrates the limiting plate and is spaced apart along the length direction of the bag body.

[0018] Using the above technical solution, items can be directly inserted into the limiting holes for positioning, eliminating the need for additional fixing steps and ensuring efficient loading and unloading. Furthermore, when the limiting plate is folded, the limiting holes do not affect the folding effect, maintaining a small footprint. In addition, when multiple limiting holes are provided, each item is placed within its own independent limiting hole, greatly preventing collisions and compression of multiple fragile items during transportation or carrying, significantly reducing the risk of breakage.

[0019] The present invention discloses a packaging bag, the limiting component including a limiting cylinder with openings at both ends in the length direction of the bag body, the limiting cylinder having a rectangular cylindrical structure, including a limiting upper plate and a limiting lower plate spaced apart along the height direction, and a pair of connecting plates connecting the limiting upper plate and the limiting lower plate in the height direction of the bag body; wherein, the pair of connecting plates are respectively attached to the inner surfaces of a pair of front faces, and at least one connecting plate is fixedly connected to a connecting portion on the inner surface of a corresponding front face.

[0020] Among them, the upper and lower limiting plates of the limiting cylinder and a pair of connecting plates all form bending creases extending along the length direction.

[0021] Using the above technical solution, the limiting cylinder, while limiting fragile items, has a pair of connecting plates that respectively adhere to the inner walls of the bag's front side, effectively expanding the bag. Even if the bag is not full, the limiting cylinder can maintain a regular shape on the front and sides, preventing the bag from collapsing and tipping over. Of course, the limiting cylinder can also be folded through the creases between the upper and lower limiting plates and the pair of connecting plates. When folded, the limiting cylinder can flatten and fit against the inner surface of the connecting parts, allowing it to fold in coordination with the bag while not affecting the bag's ability to hold large items.

[0022] The present invention discloses a packaging bag, wherein the limiting part is configured as: at least one limiting hole that penetrates the upper limiting plate and is spaced apart along the length direction of the bag body.

[0023] Alternatively, the limiting part is configured as: at least one pair of limiting holes that penetrate the upper limiting plate and the lower limiting plate and are spaced apart along the length direction of the bag body, wherein each pair of limiting holes is aligned with each other in the height direction.

[0024] Using the above technical solution, when the limiting part is set to at least one limiting hole penetrating the upper limiting plate, the item only needs to pass through the corresponding limiting hole of the upper limiting plate, while the bottom of the item abuts against the corresponding part of the lower limiting plate. The lower limiting plate can support the bottom of the item and reduce the load on the bottom surface of the bag. When the limiting part is set to at least one limiting hole penetrating both the upper and lower limiting plates, the item passes through the limiting holes on the upper and lower limiting plates in sequence, which can better restrict the item, especially for some slender and fragile items (such as test tubes or wine bottles with narrow necks and large bellies), further improving the stability of the item placed in the bag.

[0025] The present invention discloses a packaging bag, wherein a limiting cylinder is provided inside the bag and is located in the lower part of the receiving cavity near the bottom surface.

[0026] Furthermore, at least one limiting plate is provided inside the bag, and the at least one limiting plate is located in the upper part of the receiving cavity near the bag opening.

[0027] Each limiting plate is connected to a corresponding connecting part on one side in the width direction, and the limiting plate can rotate around the edge of the side connected to the connecting part; wherein, the limiting plate extends outward from the side corresponding to the connecting part to form an extension plate extending along the length direction of the bag body, the extension plate is attached and fixed to the corresponding connecting part, and a bending crease extending along the length direction is formed between the limiting plate and the extension plate, which can rotate around the crease.

[0028] Using the above technical solution, the limiting plate is located at the upper part near the bag opening. Its limiting part wraps around the upper outer periphery of the fragile item, restricting the displacement of the top of the item and preventing the item from moving up and down or colliding with the bag opening due to bumps during transportation. The limiting cylinder is located at the lower part near the bottom surface. Through the cylindrical structure, it forms a circumferential wrapping and support for the bottom and middle of the fragile item from bottom to top, preventing the bottom of the item from shaking or tipping over.

[0029] Furthermore, the limiting plate can be bent around the crease and fit the inner surface of the front of the bag, and the limiting cylinder can be folded flat along its own crease. The two folding do not interfere with each other, and the bag can still form a regular cavity to normally load large-volume items.

[0030] The present invention discloses a packaging bag in which the inner peripheral edge of each limiting hole has a plurality of protrusions extending toward the inside of the limiting hole, and each protrusion can be bent in the height direction relative to the inner peripheral edge of the limiting hole.

[0031] Using the above technical solution, multiple protrusions are formed inside the limiting hole. When the item passes through the limiting hole, the multiple protrusions are squeezed and bent along the height direction by the item. The deformed protrusions fit the outer periphery of the item, filling the gap between the limiting hole and the item, and preventing the item from shaking slightly inside the hole. Especially for fragile items with slightly curved or slightly irregular outer surfaces, the protrusions can be bent locally to fit their contours.

[0032] In addition, the deformable protrusions can cushion the vibration and impact during transportation or carrying, reducing the direct transmission of external forces to the surface of fragile items.

[0033] The present invention discloses a packaging bag, which also includes a pair of handles disposed at the opening of the bag body and respectively fixed to a pair of front sides.

[0034] Furthermore, each front end has a first pocket opening fold that bends toward the inner surface of the corresponding front end at the top, and each side end has a second pocket opening fold that bends toward the inner surface of the corresponding side at the top.

[0035] Using the above technical solution, a pair of handles are fixed to the front of the bag respectively. The symmetrical arrangement facilitates gripping with both hands and evenly distributes the weight of the contents to the front, preventing excessive localized stress that could cause the bag opening to tear. This is especially suitable for carrying multiple fragile items safely. Furthermore, both the first bag opening fold (top of the front) and the second bag opening fold (top of the side) are bent inwards, increasing the thickness of the bag opening edge and preventing wear and deformation of the bag opening due to frequent opening and closing or stress.

[0036] The beneficial effects of this utility model are as follows:

[0037] This utility model discloses a packaging bag, including a bag body with a cavity. The bag body includes a bottom surface and sidewalls extending along the height direction of the bag body and surrounding the peripheral edge of the bottom surface. The sidewalls include a pair of front faces spaced apart along the width direction of the bag body, and a pair of side faces respectively connected to the corresponding side edges of the pair of front faces along the width direction of the bag body. Furthermore, at least one limiting member is provided inside the bag body, and the at least one limiting member is spaced apart along the height direction. At least one connecting portion is formed on the inner surface of the sidewalls. Each limiting member is connected to a corresponding connecting portion and switches between a folded state (bent towards the inner surface of the connecting portion) and an unfolded state (parallel to the bottom surface).

[0038] Each limiting component has a hollow limiting part. When an item is placed in the cavity along the height direction, the limiting part of the limiting component in the unfolded state surrounds the corresponding part of the item, improving the placement stability of fragile items. When containing other items, the limiting components can be switched to the folded state, so that the bag has a regular cavity and ensures that the packaging bag has good loading capacity. Attached Figure Description

[0039] Figure 1 A structural schematic diagram of the packaging bag is provided for an embodiment of this utility model;

[0040] Figure 2 A schematic diagram showing the structure of the limiting member of the packaging bag as a limiting plate for an embodiment of this utility model;

[0041] Figure 3 A schematic diagram showing the structure of the packaging bag's limiting component set as a limiting cylinder is provided for an embodiment of this utility model;

[0042] Figure 4 A schematic diagram of the structure of the packaging bag cut open along the width direction and the limiting member in the unfolded state is provided for an embodiment of the present utility model;

[0043] Figure 5 A schematic diagram of the structure of the packaging bag cut open along the width direction and the limiting member in a folded state is provided for an embodiment of the present utility model.

[0044] Explanation of reference numerals in the attached figures:

[0045] 10. Packaging bags;

[0046] 100. Bag body; 110. Bottom; 120. Front; 130. Side; 140. First bag opening fold; 150. Second bag opening fold;

[0047] 200. Limiting component; 201. Limiting part; 202. Limiting hole; 203. Protrusion;

[0048] 210. Limiting plate; 211. Extension plate;

[0049] 220. Limiting cylinder; 221. Upper limiting plate; 222. Lower limiting plate; 223. Connecting plate;

[0050] 300. Handle;

[0051] X: width direction; Y: length direction; Z: height direction. Detailed Implementation

[0052] As mentioned in the background section, in the prior art, packaging bags are particularly prone to causing multiple fragile items to collide or be squeezed together during transportation, loading and unloading, or stacking, resulting in the breakage of the fragile items.

[0053] Therefore, this utility model provides a packaging bag, including a bag body with a cavity. The bag body includes a bottom surface and sidewalls extending along the height direction of the bag body and surrounding the peripheral edge of the bottom surface. The sidewalls include a pair of front faces spaced apart along the width direction of the bag body, and a pair of side faces respectively connected to the corresponding side edges of the pair of front faces along the width direction of the bag body. Furthermore, at least one limiting member is provided inside the bag body, and the at least one limiting member is spaced apart along the height direction. At least one connecting portion is formed on the inner surface of the sidewalls. Each limiting member is connected to a corresponding connecting portion and switches between a folded state (bent towards the inner surface of the connecting portion) and an unfolded state (parallel to the bottom surface).

[0054] Each limiting component has a hollow limiting part. When an item is placed in the cavity along the height direction, the limiting part of the limiting component in the unfolded state surrounds the corresponding part of the item, improving the placement stability of fragile items. When containing other items, the limiting components can be switched to the folded state, so that the bag has a regular cavity and ensures that the packaging bag has good loading capacity.

[0055] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0056] like Figure 1 As shown, this embodiment provides a packaging bag 10, which includes a bag body 100 with a cavity. It should be noted that in this embodiment, the bag body 100 can be made of non-woven fabric or paper or paper-like materials. This utility model does not limit it to a single material.

[0057] Specifically, the bag body 100 includes the bottom surface 110 (see...). Figure 5 The bag body 100 includes a pair of front faces 120 spaced apart along the width direction X of the bag body 100, and a pair of side faces 130 connected to the corresponding sides of the pair of front faces 120 in the width direction X of the bag body 100.

[0058] Among them, the packaging bag 10 can adopt a bottom-sealed structure (see Figure 5 Specifically, during the production process, a pair of side panels 130 and a pair of front panels 120 are connected to form a cylindrical structure, and then one end of the pair of side panels 130 and the pair of front panels 120 is folded and sealed to form a bag body 100.

[0059] Of course, the packaging bag 10 can also adopt a side-sealed structure. Specifically, each side 130 can include a pair of sub-sides arranged along the width direction X. Each sub-side is connected to the corresponding front side 120. The pair of sub-sides are bent towards each other along the side edge of the front side 120, and the sides of the pair of sub-sides that are close to each other overlap and connect, thereby forming side 130. The lower part of side 130 forms a bottom edge, which is bent towards the bottom and fixedly connected to the bottom surface 110. Of course, the bottom surface 110 can also form bottom folded edges on both sides in the length direction Y. The bottom folded edges are bent towards the corresponding side 130 and fixedly connected to the side 130.

[0060] In addition, each side 130 can also be connected to the front 120 on one side, and a side connection portion is formed at the edge away from the front 120 on one side, and connected to the front 120 on the other side through the side connection portion. This embodiment does not limit the specific connection method between the side 130 and the front 120.

[0061] It should be noted that when the material of the bag body 100 is non-woven fabric, the connection of the bag body 100 is heat-sealed; when the material of the bag body 100 is paper, the connection of the bag body 100 is glued. This embodiment does not make specific limitations on the specific selection of the adhesive.

[0062] Furthermore, such as Figure 1 As shown, at least one limiting member 200 is arranged at Z-intervals along the height direction inside the bag body 100. At least one connecting portion is formed on the inner surface of the sidewall. Each limiting member 200 is connected to a corresponding connecting portion and switches between a folded state (bent towards the inner surface of the connecting portion) and an unfolded state (parallel to the bottom surface 110). It should be noted that the bag body 100 may contain one, two, three, or other numbers of limiting members 200. Those skilled in the art can design such a number according to actual conditions and specific needs; this embodiment does not impose a unique limitation.

[0063] Of course, such as Figure 1 As shown, the packaging bag 10 may also include a pair of handles 300 disposed at the opening of the bag body 100 and respectively fixed to a pair of front faces 120. The handles 300 may be round ropes commonly used in the art, or they may be flat ropes. This embodiment does not limit them to a single type.

[0064] Furthermore, each front face 120 has a first bag opening fold 140 formed at its upper end, which bends toward the inner surface of the corresponding front face 120, and each side face 130 has a second bag opening fold 150 formed at its upper end, which bends toward the inner surface of the corresponding side face 130. It should be noted that the corresponding ends of the first bag opening fold 140 and the second bag opening fold 150 are connected to each other.

[0065] In this embodiment, a pair of handles 300 are fixed to a pair of front panels 120, respectively. The symmetrical arrangement facilitates gripping with both hands and evenly distributes the weight of the contents of the bag to the front panels 120, preventing excessive local stress that could cause the bag opening to tear. This is especially suitable for carrying multiple fragile items safely. Furthermore, the first bag opening fold 140 (upper end of the front panel 120) and the second bag opening fold 150 (upper end of the side panel 130) are both bent inward, increasing the thickness of the bag opening edge and preventing wear and deformation of the bag opening due to frequent opening and closing or stress.

[0066] The specific structure of the limiting member 200 will be described in detail below.

[0067] It should be noted that the limiting member 200 is connected to the connecting part provided on the inner surface of the side wall of the bag body 100. The connecting part can be provided on the inner surface of the front face 120 of the bag body 100 or formed on the inner surface of the side face 130 of the bag body 100.

[0068] In this embodiment, the connecting part is located on one of the inner surfaces of a pair of front faces 120, and the pair of side faces 130 are respectively formed with indentations extending along the height direction Z at the middle of the width direction X, and the bag body 100 can be folded along the indentations.

[0069] Furthermore, the limiting part 201 can switch between a folded state where it bends toward the inner surface of the connecting part and an unfolded state parallel to the bottom surface 110.

[0070] During use, when fragile items such as glass bottles are placed inside the bag 10, the limiting member 200 can be unfolded, and the limiting part 201 of the limiting member 200 surrounds the corresponding part of the item, improving the stability of the glass bottle inside the bag 100. Even during transportation, the glass bottle will not tip over, greatly reducing the risk of fragile items breaking inside the bag 100. When other items are placed inside the bag 100, especially large plush toys, the limiting member 200 can be switched to a folded state, creating a regular cavity inside the bag 100, which can hold larger items and ensure that the bag 10 has good loading capacity.

[0071] In summary, when this packaging bag 10 contains fragile items, the limiting member 200 can restrict the shaking of the fragile items, thereby improving the safety of containing fragile items. When containing other items, the limiting member 200 can be folded to ensure that the cavity of the bag body 100 can accommodate larger items.

[0072] Furthermore, the limiting member 200 is connected to the inner surface of the front face 120 via the connecting part. At the same time, indentations extending along the height direction Z can be provided on a pair of side faces 130. When the bag body 100 is folded along the indentations of the pair of side faces 130, the pair of front faces 120 will move closer to each other. Similarly, the limiting member 200 can also be folded and attached to the inner surface of a front face 120. The folding of the two works together to greatly reduce the space occupied by the packaging bag 10 when it is not in use, making it easier to store and transport the packaging bag 10.

[0073] Furthermore, the folding or unfolding process of the limiting member 200 only acts on the connection position between itself and the connecting part, and the range of motion is concentrated on the inner surface of the front 120, without affecting the folding of the side 130 along the indentation.

[0074] Furthermore, in this embodiment, the limiting member 200 includes a limiting plate 210, which is connected to the corresponding connecting portion on one side in the width direction X, and the limiting plate 210 can rotate around the edge of the side connected to the connecting portion.

[0075] The limiting plate 210 extends outward from the side corresponding to the connecting part to form an extension plate 211 extending along the length direction Y of the bag body 100. The extension plate 211 is attached and fixed to the corresponding connecting part, and a bending crease extending along the length direction Y is formed between the limiting plate 210 and the extension plate 211, which can rotate around the crease. It should be noted that when the extension plate 211 and the bag body 100 are made of non-woven fabric, the connecting part is the area on the inner surface of the front side 120 that is heat-sealed with the extension plate 211; when the extension plate 211 and the bag body 100 are made of paper, the connecting part is the area on the inner surface of the front side 120 that is coated with adhesive with the extension plate 211.

[0076] In this embodiment, the limiting plate 210 has a simple structure and low processing cost. In the folded state, it can fit along the crease to the inner surface where the connecting part is located and overlap with the extension plate 211, hardly occupying any additional space in the inner cavity of the bag body 100, and does not affect the holding of large-volume items. Furthermore, the limiting plate 210 is connected to the connecting part through the extension plate 211, ensuring that the limiting plate 210 has a large connection area with the inner surface of the front 120, and preventing the limiting plate 210 from falling off or loosening during use.

[0077] More specifically, such as Figure 2As shown, the limiting part 201 is configured as at least one limiting hole 202 that penetrates the limiting plate 210 and is spaced apart along the length Y direction of the bag body 100. It should be noted that the limiting plate 210 may be provided with one limiting hole 202, two limiting holes 202 may be spaced apart along the length Y direction of the bag body 100, or three rows of limiting holes 202 may be spaced apart along the length Y direction of the bag body 100. Each row of limiting holes 202 includes two limiting holes 202 spaced apart along the width X direction of the bag body 100. That is, the limiting plate 210 is provided with six limiting holes 202. In other words, the number of limiting holes 202 provided on the limiting plate 210 can be designed by those skilled in the art according to actual conditions and specific needs. This embodiment does not limit this to a single one.

[0078] Furthermore, the shape and size of the limiting hole 202 can be designed according to the specific item to be limited. For example, when the item to be limited is in the form of a columnar structure, the limiting hole 202 is set as a round hole, and the inner diameter of the limiting hole 202 is the same as the outer diameter of the corresponding part of the item. Alternatively, the limiting hole 202 can also be set as an elliptical hole. This embodiment does not make specific limitations on this.

[0079] In this embodiment, items can be directly inserted into the limiting hole 202 for positioning without additional fixing steps, resulting in efficient loading and unloading. Furthermore, when the limiting plate 210 is folded, the limiting hole 202 does not affect the folding effect, maintaining a small space footprint. In addition, when multiple limiting holes 202 are provided, multiple items are placed within their respective independent limiting holes 202, greatly preventing collisions and compression of multiple fragile items during transportation or carrying, significantly reducing the risk of breakage.

[0080] Of course, the limiting part 201 can also be configured as a recessed part that is recessed relative to the limiting plate 210 along the height direction Z. In this case, the bottom of the item is placed on the recessed part, thereby limiting the shaking of the item.

[0081] It should be noted that the dimension of the limiting plate 210 in the length direction Y can be smaller than the length of the bag body 100, and the dimension of the limiting plate 210 in the width direction X can be smaller than the width of the bag body 100, so as to facilitate the user to manually fold the limiting plate 210. Of course, the dimension of the limiting plate 210 in the length direction Y can be equal to the length of the bag body 100, and the dimension of the limiting plate 210 in the width direction X can be equal to the width of the bag body 100. This embodiment does not limit this to a single dimension.

[0082] Of course, the limiting member 200 can also be set as a limiting cylinder 220 with openings at both ends in the length direction Y of the bag body 100. The limiting cylinder 220 has a rectangular cylindrical structure and includes a limiting upper plate 221 and a limiting lower plate 222 spaced apart along the height direction Z, and a pair of connecting plates 223 connecting the limiting upper plate 221 and the limiting lower plate 222 in the height direction Z of the bag body 100; wherein, the pair of connecting plates 223 are respectively attached to the inner surfaces of a pair of front faces 120, and at least one connecting plate 223 is fixedly connected to the connecting part on the inner surface of the corresponding front face 120.

[0083] Among them, the upper limiting plate 221 and the lower limiting plate 222 of the limiting cylinder 220 and a pair of connecting plates 223 are all formed with bending creases extending along the length direction Y.

[0084] It should be noted that, while limiting fragile items, the limiting tube 220, with its pair of connecting plates 223 respectively adhering to the inner walls of the front 120 of the bag body 100, effectively expands the bag body 100. Even if the bag body 100 is not full, the limiting tube 220 can still support the front 120 and sides 130 to maintain a regular shape, preventing the bag body 100 from collapsing and causing the items to tip over. Of course, the limiting tube 220 can also be folded through the bending creases between the upper limiting plate 221, the lower limiting plate 222, and the pair of connecting plates 223. When folded, the limiting tube 220 can be flattened and adhering to the inner surface of the front 120 where the connecting parts are located. On the one hand, it can cooperate with the bag body 100 in folding; on the other hand, it will not affect the bag body 100's ability to hold large items.

[0085] Furthermore, such as Figure 3 As shown, the limiting part 201 on the limiting cylinder 220 can be configured as at least one limiting hole 202 that penetrates the upper limiting plate 221 and is spaced apart along the length Y direction of the bag body 100. The item only needs to pass through the corresponding limiting hole 202 of the upper limiting plate 221, while the bottom of the item abuts against the corresponding part of the lower limiting plate 222. The lower limiting plate 222 can support the bottom of the item and reduce the load on the bottom surface 110 of the bag body 100. The arrangement of the upper limiting hole 202 of the limiting cylinder 220 is similar to the arrangement of the upper limiting hole 202 of the limiting plate 210, and will not be described again here.

[0086] Of course. The limiting part 201 can also be configured as: at least one pair of limiting holes 202 that penetrate the upper limiting plate 221 and the lower limiting plate 222 and are spaced apart along the length Y direction of the bag body 100, wherein each pair of limiting holes 202 are aligned with each other in the height Z direction. When the item is placed in the bag, it needs to pass through the limiting holes 202 on the upper limiting plate 221 and the lower limiting plate 222 in sequence, which can better restrict the item, especially for some slender and fragile items (such as test tubes or wine bottles with narrow necks and large bellies), further improving the stability of the item within the bag body 100.

[0087] To better limit the movement of items, taking the limiting cylinder 220 as an example, such as... Figure 3 As shown, each limiting hole 202 has multiple protrusions 203 extending toward the interior of the limiting hole 202 on its inner peripheral edge. For example, each limiting hole 202 has eight, ten, fourteen or other numbers of protrusions 203 on its inner peripheral edge. Each protrusion 203 can be bent along the height direction Z relative to the inner peripheral edge of the limiting hole 202. When an item passes through the limiting hole 202, the multiple protrusions 203 are squeezed by the item and bent along the height direction Z. The deformed protrusions 203 fit the outer periphery of the item, filling the gap between the limiting hole 202 and the item, and preventing the item from shaking slightly in the hole. Especially for fragile items with slightly curved or slightly irregular outer peripheral surfaces, the protrusions 203 can fit their contours by partial bending.

[0088] In addition, the deformable protrusion 203 can buffer the vibration and impact during transportation or carrying, reducing the direct transmission of external forces to the surface of fragile items.

[0089] Of course, the limiting hole 202 on the limiting plate 210 may also have multiple protrusions 203 extending toward the inside of the limiting hole 202 on its inner peripheral edge.

[0090] It should be noted that when one limiting member 200 is provided inside the bag body 100, the limiting member 200 can be a limiting plate 210 or a limiting cylinder 220. When two limiting members 200 are provided inside the bag body 100, both limiting members 200 can be limiting plates 210 or both can be limiting cylinders 220, or one limiting member 200 can be a limiting plate 210 and the other limiting member 200 can be a limiting cylinder 220. These can be further divided into two arrangement methods, one of which is as follows: Figure 4 As shown, the limiting plate 210 is located in the upper part of the receiving cavity near the bag opening, and the limiting cylinder 220 is located in the lower part of the receiving cavity near the bottom surface 110. When this packaging bag 10 contains items, the limiting part 201 of the limiting plate 210 wraps around the upper outer periphery of the fragile item, restricting the displacement of the top of the item and preventing the item from moving up and down or colliding with the bag opening due to bumps during transportation; while the limiting cylinder 220 is located in the lower part near the bottom surface 110, and through the cylindrical structure, it forms a circumferential wrapping and support for the bottom and middle of the fragile item from bottom to top, preventing the bottom of the item from shaking or tipping over.

[0091] And, as Figure 5 As shown, the limiting plate 210 can be bent around the crease and fit against the inner surface of the front 120 of the bag body 100, and the limiting cylinder 220 can be folded flat along its own crease. The two folding do not interfere with each other, and the bag body 100 can still form a regular cavity to normally load large-volume items.

[0092] Of course, the limiting cylinder 220 can also be located in the upper part of the receiving cavity near the bag opening, and the limiting plate 210 can be located in the lower part of the receiving cavity near the bottom surface 110. In addition, three limiting members 200 can also be provided inside the bag body 100, and the three limiting members 200 are arranged at intervals along the height direction Z of the bag body 100. Each limiting plate 210 can be either a limiting plate 210 or a limiting cylinder 220. This embodiment does not limit this to a single one.

[0093] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model is presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. In order to provide a deep understanding of this utility model, many specific details are included in the above description, and this utility model may also be implemented without using these details. In addition, in order to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0094] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0095] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0096] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0097] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0098] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A packaging bag, characterized in that, The bag includes a bag body having a cavity, the bag body including a bottom surface and sidewalls extending along the height direction of the bag body around the peripheral edge of the bottom surface, the sidewalls including a pair of front faces spaced apart along the width direction of the bag body, and a pair of side faces respectively connecting the corresponding side edges of the pair of front faces in the width direction of the bag body; and The bag body is provided with at least one limiting member, the at least one limiting member is arranged at intervals along the height direction, and at least one connecting part is formed on the inner surface of the side wall. Each limiting member is connected to the corresponding connecting part and switches between a folded state bent toward the inner surface of the connecting part and an unfolded state parallel to the bottom surface. in Each of the limiting members has a hollow limiting portion. The article is placed in the receiving cavity along the height direction, and the limiting portion of the limiting member in the unfolded state surrounds the outer periphery of the corresponding part of the article.

2. The packaging bag as described in claim 1, characterized in that, The at least one connecting portion is located on one inner surface of the pair of front faces and is spaced apart along the height direction; and The width of each of the pair of sides is formed with an indentation extending along the height direction, and the bag body can be folded along the indentation.

3. The packaging bag as described in claim 2, characterized in that, in The limiting member includes a limiting plate, which is connected to the corresponding connecting part on one side in the width direction, and the limiting plate can rotate around the edge connected to the connecting part. in The limiting plate extends outward from the side corresponding to the connecting part to form an extension plate extending along the length direction of the bag body. The extension plate is attached and fixed to the corresponding connecting part, and a bending crease extending along the length direction is formed between the limiting plate and the extension plate, which can rotate around the crease.

4. The packaging bag as described in claim 3, characterized in that, The limiting part is configured as: at least one limiting hole that penetrates the limiting plate and is spaced apart along the length direction of the bag body.

5. The packaging bag as described in claim 2, characterized in that, The limiting component includes a limiting cylinder with openings at both ends along the length of the bag body. The limiting cylinder is generally rectangular and includes an upper limiting plate and a lower limiting plate spaced apart along the height direction, and a pair of connecting plates connecting the upper limiting plate and the lower limiting plate along the height direction of the bag body. The pair of connecting plates are respectively fitted to the inner surfaces of the pair of front faces, and at least one connecting plate is fixedly connected to a connecting portion on the inner surface of a corresponding front face. The upper limiting plate and the lower limiting plate of the limiting cylinder are all connected to the pair of connecting plates by bending creases extending along the length direction.

6. The packaging bag as described in claim 5, characterized in that, The limiting part is configured as: at least one limiting hole that penetrates the upper limiting plate and is spaced apart along the length direction of the bag body; or At least one pair of limiting holes are provided through the upper limiting plate and the lower limiting plate and are spaced apart along the length direction of the bag body, wherein each pair of limiting holes is aligned with each other in the height direction.

7. The packaging bag as described in claim 6, characterized in that, in A limiting cylinder is disposed inside the bag, and the limiting cylinder is located in the lower part of the receiving cavity near the bottom surface; and The bag body is also provided with at least one limiting plate, which is located in the upper part of the receiving cavity near the bag opening; in Each of the limiting plates is connected to the corresponding connecting portion on one side of the width direction, and the limiting plate can rotate around the edge of the side connected to the connecting portion; wherein, the limiting plate extends outward from the side corresponding to the connecting portion to form an extension plate extending along the length direction of the bag body, the extension plate is attached and fixed to the corresponding connecting portion, and a bending crease extending along the length direction is formed between the limiting plate and the extension plate, and the extension plate can rotate around the crease.

8. The packaging bag as described in claim 4 or 6, characterized in that, Each of the limiting holes has a plurality of protrusions extending toward the interior of the limiting hole on its inner peripheral edge, and each of the protrusions can be bent relative to the inner peripheral edge of the limiting hole along the height direction.

9. The packaging bag according to any one of claims 1 to 7, characterized in that, The packaging bag also includes a pair of handles disposed at the opening of the bag body and respectively fixed to the pair of front sides; and Each of the front sides has a first pocket opening fold at its upper end, which bends toward the inner surface of the corresponding front side, and each of the side sides has a second pocket opening fold at its upper end, which bends toward the inner surface of the corresponding side side.

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