A trash bag

Abstract

The application discloses a garbage bag, which comprises a bag body, the bag body has a bag opening and a bag bottom, a plurality of pressing groove lines are arranged on the surface of the bag body, and the plurality of pressing groove lines form an extension area; the pressing groove lines are configured to be stretched under the gravity or volume of an object placed in the bag body, so that the bag body is deformed in extension at the pressing groove lines, thereby increasing the effective volume of the bag body; a binding mechanism is arranged at the bag opening and used for closing the bag opening by contraction. The garbage bag of the application is stretched under the gravity or volume of the object to generate extension deformation, the effective volume of the bag body is increased, the extension property of the bag body is improved, the bearing capacity of the bag body is not affected, the garbage bag is prevented from being broken, and the bag opening can be closed by contraction through the binding mechanism after the volume is increased.

Description

Technical Field

[0001] This invention relates to the field of bag technology, and more specifically to a garbage bag. Background Technology

[0002] Garbage bags are widely used hygiene products in daily life, used to hold and transport various types of household waste. Current garbage bags are typically made of flexible film material, and their volume is determined by the bag's dimensions; the bag itself does not have the ability to expand. During use, when the amount of garbage exceeds the bag's nominal volume, the garbage overflows from the opening. At this point, the user cannot close the bag to secure it, causing inconvenience for garbage collection and transportation. Furthermore, forcibly pressing excess garbage into the bag can easily cause it to rupture, resulting in garbage spillage and environmental pollution. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a garbage bag that at least solves the above problems, given that existing garbage bags have a fixed volume and insufficient extensibility, making it impossible to close the bag opening to complete the binding and packaging when the garbage is overloaded.

[0004] To address the aforementioned technical problems, the present invention provides a garbage bag, comprising a bag body having an opening and a bottom. The surface of the bag body is provided with multiple pressure grooves forming an extended area. The pressure grooves are configured such that when an item is placed inside the bag, the grooves are expanded under the weight or volume of the item, causing the bag body to extend and deform at the pressure grooves, thereby increasing the effective volume of the bag body. A restraining mechanism is provided at the opening for closing the opening.

[0005] Through the above technical solution, the garbage bag of the present invention has grooves on its surface to form an extended area. When items are placed inside the bag, the grooves are stretched open under the weight or volume of the items, causing the bag to stretch and deform at the grooves, thereby increasing the effective volume of the bag. Therefore, even if the garbage load exceeds the bag's conventional capacity, the bag can expand to create additional space through the unfolding of the extended area, allowing the binding mechanism to close the bag opening above the garbage, completing the binding and packaging. Compared with the prior art, the garbage bag of the present invention has better extensibility, can adapt to overloaded usage scenarios, and avoids the problem of garbage exceeding the bag opening and making it impossible to pack. Attached Figure Description

[0006] Figure 1 A schematic diagram of the structure of an inventive garbage bag (not shown); Figure 2 for Figure 1 Enlarged schematic diagram of region A (extended area with multiple groove lines); Figure 3 Another structural diagram for inventing a garbage bag (unfolded).

[0007] Figure label: 100. Bag body; 110. Bag opening; 120. Bag bottom; 130. Installation channel; 200. Pull the rope; 300, Extension area; 310, Groove line. Detailed Implementation

[0008] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0009] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "center," "longitudinal," "lateral," "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0010] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0011] This invention provides a garbage bag, comprising a bag body 100 made of a flexible film material. The bag body 100 has a top opening 110 and a bottom opening 120. The surface of the bag body 100 is provided with a plurality of grooves 310, forming an extended area 300. The grooves 310 are linear indentations formed on the surface of the bag body 100 by cold or hot pressing, where the material thickness at the indentation is less than the thickness of other areas of the bag body 100, forming weakening lines on the material. A restraining mechanism is provided at the opening 110 for closing the opening.

[0012] Specifically, when an item is placed inside the bag 100, the downward pull of the item's gravity and the outward expansion of its volume are applied together to the groove line 310. Since the material at the groove line 310 is relatively thin, it is gradually stretched open under the action of the pulling force and the expansion force. The originally pressed texture structure unfolds, increasing the surface area of ​​a local area of ​​the bag 100, thereby expanding the additional storage space.

[0013] The number of grooves in the extended area can be selected according to the actual situation, as can the number of extended areas on the bag body.

[0014] Specifically, after the bag body 100 expands, the restraining mechanism contracts and closes the bag opening 110, completely sealing the waste inside the bag body 100. The setting of the pressing groove line 310 does not change the basic structure of the bag body 100, the manufacturing process is simple, and the increase in cost is limited.

[0015] In one embodiment, the bag body 100 is made of polyethylene film material with a film thickness of 0.01 mm to 0.03 mm, the width of the groove line 310 is 0.5 mm to 2 mm, and the depth of the groove line 310 is 10% to 50% of the thickness of the bag body 100.

[0016] In this embodiment, if the depth of the groove line 310 is too shallow, the extension effect is not obvious; if it is too deep, the strength of the bag body 100 at the groove line 310 decreases too much and it is easy to break. By controlling the depth of the groove line 310 within the range of 10% to 50% of the thickness of the bag body 100, sufficient extension deformation can be ensured, while maintaining the basic strength of the bag body 100 at the groove line 310.

[0017] In another embodiment, the depth of the groove line 310 is 20% to 40% of the thickness of the bag body 100, which is suitable for application scenarios that require both large elongation and high strength.

[0018] In another embodiment, the depth of the groove line 310 is 15% to 30% of the thickness of the bag body 100, which is suitable for application scenarios where the bag body 100 material has good toughness and is not easy to break.

[0019] In another embodiment, the groove line 310 may be provided only on the front or back of the bag body 100; In another embodiment, the pressure groove line 310 can be set on both the front and back of the bag body 100 at the same time, so that the bag body 100 can be stretched and deformed in both directions when it is expanded, and the expansion effect is more uniform.

[0020] In another embodiment, the groove line 310 can also be provided on the side of the bag body 100, so that the bag body 100 can also be stretched and deformed in the side.

[0021] In one embodiment, the pressure groove 310 is disposed on the surface of the middle section of the bag body 100, which is located between the bag opening 110 and the bag bottom 120. The middle section is the main holding area of ​​the bag body 100 when loading garbage, and it is also the area where the gravity of the garbage is most concentrated.

[0022] No pressure groove line 310 is set in the area near the bag opening 110 and the area at the bottom of the bag 120. Maintaining the integrity of the structure in the area near the bag opening 110 is conducive to the normal contraction and closure of the restraint mechanism, and maintaining the integrity of the structure in the area at the bottom of the bag 120 ensures the load-bearing capacity of the bottom of the bag 120.

[0023] The range of the middle section can be determined based on the overall dimensions of the bag body 100. For example, for a garbage bag with a total length of 60cm, the middle section can be the area from 15cm upward from the bottom 120 of the bag to 10cm downward from the top 110 of the bag.

[0024] In another embodiment, the middle section area can be larger, for example, the area between 5cm upward from the bottom of the bag 120 and 5cm downward from the opening of the bag 110, so that the distribution range of the groove line 310 is wider and the expansion effect is more significant.

[0025] In another embodiment, the middle section may only cover the middle part of the bag body 100, such as the area from 20cm up from the bottom 120 to 15cm down from the opening 110, which is suitable for scenarios where the bag body 100 is relatively tall and needs to be expanded in the middle section.

[0026] In another embodiment, the groove lines 310 in the middle section region can extend along the axial direction of the bag body 100, and each groove line 310 is arranged parallel to each other, so that when the groove lines 310 are unfolded, the bag body 100 will produce uniform extension deformation along the axial direction.

[0027] In another embodiment, the groove line 310 in the middle section region can extend along the circumferential direction of the bag body 100, so that the bag body 100 is stretched and deformed in the circumferential direction.

[0028] In another embodiment, the groove line 310 in the middle section area can simultaneously include axially extending and circumferentially extending groove lines 310 to form a grid-like extended texture structure, so that the bag body 100 can produce extended deformation in both axial and circumferential directions, and the expansion effect is more comprehensive.

[0029] In one embodiment, a reserved area is retained between adjacent extended regions 300. Multiple groove lines 310 are provided on the surface of the bag body 100, forming multiple extended regions 300. A reserved area of ​​a certain width is retained between two adjacent extended regions 300. No groove lines 310 are provided in this reserved area, and the bag body 100 maintains its original film structure and strength in this area. The width of the reserved area can be determined according to the material properties of the bag body 100 and the required extension amount; for example, the width of the reserved area can be 5mm to 20mm. If the groove lines 310 cover the entire surface of the bag body 100 too densely, the overall strength of the bag body 100 will decrease significantly, and it will be prone to breakage at the groove lines 310 when loading garbage. By retaining the reserved area, the problem of the bag body 100 being prone to breakage due to excessively dense groove lines 310 is avoided, balancing extensibility and toughness.

[0030] In another embodiment, the width of the reserved area can be set to 3mm to 8mm, which is suitable for use scenarios that require a large amount of extension and have a low waste density; In another embodiment, the width of the reserved area can be set to 15mm to 30mm, which is suitable for use scenarios that require high structural strength and high waste density.

[0031] In another embodiment, the reserved area may extend along the axial direction of the bag body 100, separating adjacent extended areas 300 in the circumferential direction. In another embodiment, the reserved area may extend circumferentially along the bag body 100, separating adjacent extended areas 300 in the axial direction. In yet another embodiment, the reserved area may be strip-shaped, band-shaped, or irregularly shaped, as long as it can separate adjacent extended areas 300.

[0032] In one embodiment, the bottom of the middle section is at a predetermined distance from the bottom of the bag 120. The bottom area of ​​the bag 100 is the area that bears the greatest weight when loading garbage, and no pressure groove 310 is provided in this area. The predetermined distance between the bottom of the middle section and the bottom of the bag 120 can be determined according to the size of the bag 100 and the load-bearing requirements, for example, the predetermined distance is 5cm to 15cm. If a pressure groove 310 is provided in the bottom of the bag 120 area, it is easy to break at the pressure groove 310 when overloaded, resulting in garbage leakage. By leaving a distance between the bottom of the middle section and the bottom of the bag 120 without a pressure groove 310, the toughness of the bottom of the bag 120 area is ensured, so that the bottom of the bag 120 can withstand a large weight of garbage without easily breaking, thus improving the reliability of the garbage bag.

[0033] In another embodiment, the preset distance can be set to 3cm to 8cm, which is suitable for garbage bags with small size and light load. In another embodiment, the preset distance can be set to 10cm to 20cm, which is suitable for garbage bags with a large size and heavy load capacity.

[0034] In another embodiment, the top of the middle section can also be at a preset distance from the bag opening 110, so that the area near the bag opening 110 maintains an intact structure, which is beneficial to the normal contraction and closure of the restraint mechanism.

[0035] In another embodiment, the preset distance between the bottom of the middle section and the bottom of the bag 120 and the preset distance between the top of the middle section and the opening of the bag 110 can be the same or different, depending on the size of the bag body 100 and the expansion requirements.

[0036] In one embodiment, the restraint mechanism includes an installation channel 130 provided along the bag opening 110 and a pull rope 200 passing through the installation channel 130, wherein the installation channel 130 has openings on opposite sides.

[0037] In one embodiment, the edge of the bag opening 110 of the bag body 100 is folded inward and heat-sealed to form an installation channel 130, which extends circumferentially along the bag opening 110. A pull cord 200 is threaded through the installation channel 130, the length of which is greater than or equal to the circumference of the installation channel 130, and the pull cord 200 can be partially pulled out of the installation channel 130 from the opening. The opening is located on the side wall of the installation channel 130, and the size of the opening is greater than twice the diameter of the pull cord 200.

[0038] When securing the bag, the user pulls the drawstring 200 outwards at each of the two openings. The drawstring 200 slides within the mounting channel 130 and tightens the bag opening 110, causing it to close. Since the bag body 100 has already increased its volume through the expansion of the pressure groove 310 when overloaded, the closed position of the bag opening 110 is above the waste, completely sealing the waste inside the bag body 100. The securing method using the mounting channel 130 and drawstring 200 is simple in structure and easy to operate. The drawstring 200 can be made of materials such as nylon rope, cotton rope, or plastic rope.

[0039] In another embodiment, the installation channel 130 can be formed by attaching a strip of material to the edge of the bag opening 110, with the two sides of the strip of material bonded to the surface of the bag body 100, forming a channel space in the middle for the pull cord 200 to pass through.

[0040] In another embodiment, the installation channel 130 can also be formed by folding the edge of the bag opening 110 outward and then ultrasonically welding it, with the welding line extending circumferentially along the bag opening 110, and the installation channel 130 being formed between the welding line and the edge of the bag opening 110.

[0041] In another embodiment, the cross-sectional shape of the mounting channel 130 is circular or oval, and the pull rope 200 is inserted into the mounting channel 130. The diameter of the pull rope 200 is smaller than the inner diameter of the mounting channel 130, so that the pull rope 200 can slide smoothly within the mounting channel 130.

[0042] In another embodiment, the width of the mounting channel 130 is 5mm to 15mm, and the diameter of the pull rope 200 is 1mm to 3mm. The width of the mounting channel 130 is greater than the diameter of the pull rope 200 to ensure that the pull rope 200 can slide freely within the mounting channel 130.

[0043] In another embodiment, the opening can be provided on the side wall of the mounting channel 130 near the bag opening 110, or on the side wall of the mounting channel 130 away from the bag opening 110.

[0044] In another embodiment, the opening is shaped as an elongated hole or a round hole, with a length of 5mm to 20mm and a width of 2mm to 5mm, so that the pull rope 200 can be smoothly passed through the opening and held and pulled by the user.

[0045] In one embodiment, the groove lines 310 are distributed below the mounting channel 130. The distribution range of the groove lines 310 on the bag body 100 extends upward to the position below the mounting channel 130, that is, the upper end of the groove lines 310 approaches but does not exceed the area where the mounting channel 130 is located. The mounting channel 130 is located at the edge of the bag opening 110, and the groove lines 310 extend upward from the middle section of the bag body 100 to near the lower edge of the mounting channel 130. When the bag body 100 is loaded with excess waste, the expansion range of the groove lines 310 can cover the upper area of ​​the bag body 100, so that the bag body 100 can also be extended and deformed near the bag opening 110, further increasing the effective volume of the bag body 100. At the same time, the groove lines 310 do not extend into the area where the mounting channel 130 is located, to avoid the expansion of the groove lines 310 affecting the structural stability of the mounting channel 130, and to ensure that the restraining mechanism can properly retract the bag opening 110.

[0046] In another embodiment, the distance between the upper end of the groove line 310 and the lower edge of the mounting channel 130 is 1cm to 3cm, which can make the unfolding range of the groove line 310 sufficiently close to the bag opening 110 area, while avoiding interference of the unfolding of the groove line 310 with the mounting channel 130.

[0047] In another embodiment, the distance between the upper end of the groove line 310 and the lower edge of the mounting channel 130 is 0.5cm to 1cm, which is suitable for application scenarios that require maximizing the expansion effect.

[0048] In another embodiment, the distance between the upper end of the groove line 310 and the lower edge of the mounting channel 130 is 3cm to 5cm, which is suitable for application scenarios where it is necessary to ensure the structural stability of the mounting channel 130.

[0049] In another embodiment, the groove line 310 can extend to the lower edge of the mounting channel 130, that is, the upper end of the groove line 310 connects with the lower edge of the mounting channel 130, thereby maximizing the expansion range of the groove line 310.

[0050] In one embodiment, the groove line 310 forms a wavy pattern. The wavy pattern creates a continuous wave-like texture on the surface of the bag 100, with alternating crests and troughs. When an item is placed inside the bag 100, the weight or volume of the item causes the wavy pattern to gradually unfold at the crests and troughs, straightening the wavy texture and causing the bag 100 to stretch and deform, increasing its effective volume. The wavy pattern has good extensibility, can unfold under relatively small tensile forces, and the unfolding process is relatively gentle, making stress concentration less likely. The amplitude and wavelength of the waves can be adjusted according to the size of the bag 100 and the required amount of stretching; for example, the wave amplitude can be 2mm to 10mm, and the wavelength can be 5mm to 20mm.

[0051] In another embodiment, the groove line 310 forms a serrated pattern. The serrated pattern forms a continuous serrated texture on the surface of the bag 100, with the tips and roots of the serrations alternating. When an item is placed inside the bag 100, the serrated pattern gradually unfolds at the tips and roots, straightening the serrated lines and causing the bag 100 to stretch and deform. The serrated pattern has a good unfolding effect and can unfold under greater tensile force, making it suitable for loading heavy waste. In yet another embodiment, the groove line 310 forms an arc-shaped pattern. The arc-shaped pattern forms a continuous arc-shaped texture on the surface of the bag 100, with the curvature of each arc aligned or alternating. When an item is placed inside the bag 100, the arc-shaped pattern gradually straightens, causing the bag 100 to stretch and deform. The arc-shaped extension lines are subjected to more uniform stress during the unfolding process, making it less likely for stress concentration to occur in local areas. The bag body 100 is less likely to break at the groove line 310 during the expansion process.

[0052] In one embodiment, the extension regions 300 are divided into multiple groups, with each group of extension regions 300 arranged at intervals along the circumference of the bag body 100. Multiple pressure grooves 310 on the surface of the bag body 100 are divided into multiple groups, each group containing one or more pressure grooves 310. Each group of extension regions 300 is spaced apart along the circumferential direction of the bag body 100, forming a reserved area between adjacent groups of extension regions 300. When an item is placed inside the bag body 100, the pressure grooves 310 in each group of extension regions 300 unfold, causing the bag body 100 to extend and deform at multiple circumferential positions. The circumferential arrangement of the extension regions 300 ensures that the bag body 100 experiences relatively uniform stress during expansion, preventing localized over-extension while other areas remain unextended.

[0053] In another embodiment, the groups of extension regions 300 can be arranged at intervals along the axial direction of the bag body 100, so that the bag body 100 can be extended and deformed at multiple positions in the axial direction.

[0054] In another embodiment, each set of extension regions 300 can be arranged at intervals along the circumference and axial direction of the bag body 100 to form an array-like layout of extension regions 300, so that the bag body 100 can produce uniform extension deformation in both the circumference and axial direction.

[0055] In another embodiment, the number of groove lines 310 in each group of extended areas 300 may be the same or different, depending on the expansion requirements of each area of ​​the bag body 100.

[0056] In one embodiment, the groove lines 310 extend along the axial direction of the bag body 100, and the groove lines 310 are arranged parallel to each other. Multiple groove lines 310 extend along the axial direction of the bag body 100, that is, from the bag opening 110 towards the bag bottom 120. The groove lines 310 are parallel to each other and evenly spaced along the circumferential direction of the bag body 100. When an item is placed inside the bag body 100, the groove lines 310 are stretched axially under the weight or volume of the item, causing the bag body 100 to stretch and deform in the axial direction. The parallel arrangement of the groove lines 310 ensures that the stretching and deformation of the bag body 100 during expansion is relatively uniform, preventing localized excessive stretching.

[0057] In another embodiment, each groove line 310 extends along the circumferential direction of the bag body 100, and each groove line 310 is arranged parallel to each other, so that the bag body 100 is stretched and deformed in the circumferential direction.

[0058] In another embodiment, each groove line 310 may extend along the axial direction of the bag body 100, but the spacing between each groove line 310 is not exactly the same. The spacing between the groove lines 310 in the middle region of the bag body 100 is smaller, and the spacing between the groove lines 310 in the two sides of the bag body 100 is larger, so that the extension of the middle region of the bag body 100 is greater than that of the two sides.

[0059] In another embodiment, each groove line 310 extends along the axial direction of the bag body 100. The lengths of the groove lines 310 can be the same or different. For example, the groove lines 310 located in the middle region of the bag body 100 are longer, while the groove lines 310 located on both sides of the bag body 100 are shorter.

[0060] In practical use, the user first places the garbage bag inside the garbage can, folding the bag opening 110 over the edge of the garbage can, with the bag body 100 hanging naturally and fitting against the inner wall of the garbage can. At this time, the pressure groove 310 on the surface of the bag body 100 is in a closed state, and the bag body 100 presents a normal volume shape. When garbage is put into the bag body 100 and gradually accumulates, the weight and volume of the garbage exert a downward pulling force and an outward supporting force on the bag body 100. When the amount of garbage does not exceed the nominal volume of the bag body 100, the pressure groove 310 is only subjected to a small force, and the bag body 100 has a small deformation. As the amount of garbage gradually increases and approaches or exceeds the top edge of the garbage can, the pressure groove 310 begins to gradually unfold under the continuous action of the weight and volume of the garbage. The originally pressed lines relax, and the bag body 100 undergoes extension deformation at the pressure groove 310, thereby increasing the effective volume and enabling the bag body 100 to accommodate a garbage volume exceeding its nominal volume. After the garbage is loaded, the user removes the garbage bag from the edge of the garbage can, grasps the pull ropes 200 extending from the openings on both sides of the installation channel 130 with both hands, and pulls the pull ropes 200 outwards. The pull ropes 200 slide within the installation channel 130 and gradually tighten the bag opening 110, causing the bag opening 110 to contract and close. Because the bag body 100 has increased its volume through the expansion of the pressure groove line 310 when overloaded, the contracted position of the bag opening 110 is above the garbage, and the garbage is completely sealed inside the bag body 100. The user then knots or tightens the pull rope 200 to complete the binding and sealing of the garbage bag. Throughout the process, the expansion of the pressure groove line 310 provides additional accommodation space for the bag body 100, allowing the garbage bag to still be bound and sealed even when overloaded, avoiding the problem of not being able to seal the bag because the garbage exceeds the bag opening 110; at the same time, the reserved area and the bag bottom 120 area maintain the integrity of the structure, ensuring the overall strength of the bag body 100 and making the bag body 100 less prone to breakage during the expansion process.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A garbage bag, characterized in that, The bag includes a bag body with an opening and a bottom. Multiple pressure grooves are formed on the surface of the bag body, creating an extended area. The pressure grooves are configured such that when an item is placed inside the bag, the grooves are stretched open by the weight or volume of the item, causing the bag body to extend and deform at the pressure grooves, thereby increasing the effective volume of the bag body. A restraining mechanism is provided at the opening to close the opening.

2. The garbage bag according to claim 1, characterized in that, The groove line is disposed on the surface of the middle section of the bag body, and the middle section is located between the bag opening and the bag bottom.

3. The garbage bag according to claim 2, characterized in that, A reserved area is maintained between adjacent extended areas.

4. The garbage bag according to claim 2, characterized in that, The bottom of the middle section is at a predetermined distance from the bottom of the bag.

5. The garbage bag according to claim 1, characterized in that, The restraint mechanism includes an installation channel along the bag opening and a pull rope passing through the installation channel, wherein the installation channel has openings on opposite sides.

6. The garbage bag according to claim 5, characterized in that, The pressure grooves are distributed below the installation channel.

7. The garbage bag according to claim 1, characterized in that, The extended lines formed by the grooves are at least one of wavy, sawtooth, or arc-shaped.

8. The garbage bag according to claim 1, characterized in that, The extended area is divided into multiple groups, and the extended areas in each group are arranged at intervals along the circumference of the bag.

9. The garbage bag according to claim 1, characterized in that, The depth of the groove line is 10% to 50% of the thickness of the bag body.

10. The garbage bag according to claim 1, characterized in that, The groove lines extend along the axial direction of the bag body, and each groove line is arranged parallel to the others.

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