Antibacterial and bacteriostatic heat preservation lunch bag
By incorporating antibacterial aluminum foil, waterproof nylon zippers, and ICE WALL pockets, the design addresses the issues of poor insulation, insufficient antibacterial properties, fixed volume, and limited carrying options in lunch bags. It achieves multi-dimensional insulation, antibacterial properties, increased capacity, and flexible carrying to meet the needs of various usage scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU ZHENYUAN RECREATION PRODUCTION CO LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-06-16
AI Technical Summary
Existing lunch packs have poor heat retention and airtightness, easily lose heat, lack antibacterial and bacteriostatic functions, have fixed storage volume, and offer only one way to carry them without flexibility.
Featuring an antibacterial aluminum foil inner layer, waterproof nylon zippers, ICE WALL compartment pockets, and expansion sections, combined with multiple hanging methods and handle design, it achieves multi-dimensional insulation, antibacterial properties, expansion capacity, and flexible portability.
It effectively extends the time food stays warm, inhibits bacterial growth, is suitable for different food quantities, meets various carrying needs, and improves ease of use and safety.
Smart Images
Figure CN224357176U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of backpack technology, specifically to an antibacterial, bacteriostatic, and heat-insulating lunch bag. Background Technology
[0002] Lunch bags are a common tool for carrying food in daily life and outdoor activities. However, existing lunch bags generally have the following shortcomings:
[0003] 1. Most existing lunch packs use a single insulation material, which has poor insulation performance and poor airtightness, making it easy for heat to be lost. This makes it difficult to maintain a suitable temperature inside the pack for a long time, causing the food temperature to drop rapidly, affecting the taste and safety of the food.
[0004] 2. Existing lunch bags typically lack antibacterial and bacteriostatic properties in their internal materials, making them prone to bacterial growth. Since lunch bags are often used to carry warm food, the bacteria multiply faster under the influence of warm food, which can easily cause food spoilage and threaten the user's health.
[0005] 3. Currently, the storage capacity of lunch packs on the market is fixed and cannot be flexibly adjusted according to the amount of food. When you need to carry a lot of food, the existing lunch packs are difficult to meet the needs. If a large volume is designed to accommodate a large amount of food, it will cause a waste of space when carrying a small amount of food, and it will be inconvenient to carry.
[0006] 4. Most existing lunch bags are only equipped with fixed handles or shoulder straps, which cannot flexibly adjust the hanging method according to the usage scenario, resulting in a single carrying method and limited applicability. Utility Model Content
[0007] The purpose of this invention is to provide an antibacterial, antimicrobial, and heat-insulating lunch pack to solve the problems mentioned in the background art.
[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0009] An antibacterial and heat-insulating lunch bag includes a bag body and a lid. The bag body and lid are connected by a main zipper, and the side of the bag body away from the lid is integrally connected to an expansion section by a secondary zipper. The outer surface of the bag body is provided with a first hook for engaging with a shoulder strap to make the lunch bag hang vertically. The outer surface of the lid is provided with a second hook for engaging with a shoulder strap to make the lunch bag hang horizontally. The outer surface of the bag body is connected to a first handle, and the outer surface of the lid is connected to a second handle.
[0010] The package body, cover, and expansion section each include an outer layer, an inner layer, and an inner lining layer. The outer layer is made of water-repellent coated PU fabric, the inner layer is made of antibacterial and bacteriostatic aluminum film, and the inner lining layer is made of high-density foam composite aluminum film.
[0011] Preferably, the surface of the cover is provided with a first compartment pocket for placing an ice wall, and the opening of the first compartment pocket is provided with a first pocket zipper.
[0012] Preferably, the surface of the expansion section is provided with a second compartment pocket for placing an ice wall, and the opening of the second compartment pocket is provided with a second pocket zipper.
[0013] Preferably, the main zipper, the secondary zipper, the first pocket zipper, and the second pocket zipper are all made of waterproof nylon.
[0014] Preferably, there are two first hooks, which are symmetrically distributed about the central axis of the first handle, and are respectively located on the upper part of opposite sides of the bag body. The two ends of the shoulder strap are detachably connected to the corresponding first hooks.
[0015] Preferably, the extension direction of the first handle is perpendicular to the extension direction of the second handle.
[0016] Preferably, there are two second hooks, which are symmetrically distributed about the central axis of the second handle, and the two ends of the shoulder strap are detachably connected to the corresponding second hooks.
[0017] Preferably, a buckle is provided between the outer surface of the bag body and one end of the first handle, and one end of the first handle is detachably connected to the bag body through the buckle.
[0018] Preferably, the inner layer is made of a 0.17mm antibacterial and bacteriostatic aluminum film.
[0019] Preferably, the material of the inner lining layer is a 10mm PE cotton composite aluminum film.
[0020] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0021] 1. This utility model provides an antibacterial and bacteriostatic insulated lunch bag to solve the problems of poor heat retention and easy heat loss in existing lunch bags. Through the heat insulation and heat reflection of the inner lining, the sealing and waterproofing of the waterproof nylon zipper, and the enhanced airtightness, combined with the ICE WALL placed in the inner pocket for auxiliary heat retention, heat loss inside the bag can be reduced from multiple dimensions, effectively extending the time food stays warm, thereby ensuring the taste and suitable temperature of the food when eaten.
[0022] 2. This utility model provides an antibacterial and bacteriostatic insulated lunch bag to address the lack of antibacterial properties in existing lunch bags. By using an antibacterial aluminum film for the inner layer and fixing it with high-frequency heat pressing, the lunch bag effectively inhibits bacterial growth, prevents food spoilage, and protects the user's dietary health.
[0023] 3. This utility model provides an antibacterial and heat-insulating lunch bag to solve the problem of existing lunch bags having a fixed storage volume that cannot be flexibly adjusted according to the amount of food. By integrating an expansion section onto the bag body, the secondary zipper can be opened to expand the bag's cavity when the expansion section is fully open, adapting to different food storage needs, avoiding space waste or insufficient storage, and improving ease of use.
[0024] 4. This utility model provides an antibacterial and heat-insulating lunch bag to solve the problem of the limited carrying methods of existing lunch bags. Through the design of two first hooks and two second hooks, the lunch bag can be hung vertically or horizontally according to individual needs or food type after being attached to the shoulder strap, meeting the user's personalized needs. Furthermore, the design of the first and second handles allows the lunch bag to support multiple carrying methods, adapting to different scenarios and providing diverse effects.
[0025] In summary, the antibacterial and heat-insulating lunch bag proposed in this utility model achieves excellent heat preservation, efficient antibacterial and heat-insulating properties, flexible capacity expansion, multiple carrying methods, and reliable waterproof functions through targeted material selection and structural design. This makes the lunch bag comprehensive in function and highly practical, fully meeting the needs of users in different scenarios such as daily commuting, outdoor hiking, cycling picnics, etc., and has significant use value and promotion potential. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the lunch bag and shoulder strap structure of this utility model;
[0027] Figure 2 This is a three-dimensional structural diagram of the front and back of the lunch bag of this utility model;
[0028] Figure 3 This is a schematic diagram of the left-side plan view of the lunch bag of this utility model;
[0029] Figure 4 This is a top view of the lunch bag of this utility model;
[0030] Figure 5 This is a schematic diagram of the opening structure of the cover of this utility model;
[0031] Figure 6 This is a schematic diagram of the opening structure of the cover and expansion section of this utility model;
[0032] Figure 7 This is a schematic diagram of the lunch bag of this utility model in a vertically suspended state;
[0033] Figure 8 This is a schematic diagram of the lunch bag of this utility model in a horizontally suspended state;
[0034] Figure 9 This is a schematic diagram of the outer layer, inner layer and inner lining layer of the lunch bag of this utility model.
[0035] In the picture: 1. Bag body; 2. Bag flap; 3. Main zipper; 4. Secondary zipper; 5. Expansion section; 6. Shoulder strap; 7. First hook; 8. Second hook; 9. First handle; 10. Second handle; 11. Outer layer; 12. Inner layer; 13. Lining layer; 14. First slip pocket zipper; 15. Second slip pocket zipper; 16. Buckle. Detailed Implementation
[0036] The present invention will be further described in detail below with reference to embodiments:
[0037] like Figures 1-9 As shown, this utility model provides an antibacterial and heat-insulating lunch bag, comprising a bag body 1 and a lid 2. The bag body 1 and the lid 2 are connected by a main zipper 3, and the side of the bag body 1 away from the lid 2 is integrally connected to an expansion section 5 by a secondary zipper 4. The design of the expansion section 5 ensures that the lunch bag can be opened according to the amount of food needed, so that the expansion section 5 can be fully opened to expand the cavity of the bag body 1, increasing the volume by about 50% to accommodate different food storage needs, avoiding space waste or insufficient storage, and improving ease of use. The outer surface of the bag body 1 is provided with a first hook 7 for cooperating with the shoulder strap 6 to make the lunch bag hang vertically, and the outer surface of the lid 2 is provided with a second hook 8 for cooperating with the shoulder strap 6 to make the lunch bag hang horizontally. The outer surface of the bag body 1 is connected with a first handle 9, and the outer surface of the lid 2 is connected with a second handle 10.
[0038] Furthermore, the lunch bag proposed in this utility model has a size of 21×25.5×10-15cm, and its height after expansion is 15cm, which can increase the volume by 50%, realizing flexible adjustment of the lunch bag's storage space, so that it can meet the convenience of carrying a small amount of food, and also adapt to the storage needs of a large amount of food.
[0039] Combination Figure 7 and Figure 8As shown, further, two first hooks 7 are provided, symmetrically distributed about the central axis of the first handle 9, and respectively positioned on the upper part of opposite sides of the bag body 1. The two ends of the shoulder strap 6 are detachably connected to the corresponding first hook 7. Similarly, two second hooks 8 are provided, symmetrically distributed about the central axis of the second handle 10, and respectively detachably connected to the two ends of the shoulder strap 6. The extension directions of the first handle 9 and the second handle 10 are perpendicular to each other.
[0040] Specifically, the design of the two first hooks 7 allows the clips on the shoulder straps 6 to be attached to the corresponding first hooks 7, so that the lunch bag is hung vertically; while the design of the two second hooks 8 allows the clips on the shoulder straps 6 to be attached to the corresponding second hooks 8, so that the lunch bag is hung horizontally.
[0041] Furthermore, the design of two first hooks 7 and two second hooks 8 allows the lunch bag, when used with the conventional shoulder strap 6, to be hung vertically or horizontally according to individual needs or food type, meeting the user's personalized usage requirements. Moreover, the design of the first handle 9 and the second handle 10 enables the lunch bag proposed in this invention to support multiple hanging and carrying methods, adapting to different scenarios such as outdoor cycling, hiking, and commuting, meeting diverse requirements.
[0042] It is worth noting that the shoulder strap 6 is a conventional technology that allows for the removal of the buckle or adjustment of the length of the shoulder strap 6, which will not be discussed further in this article.
[0043] Combination Figure 2 As shown, furthermore, the surface of the cover 2 is provided with a first compartment pocket for placing an ICE WALL (ice barrier, commonly ice packs, ice blocks, ice pads, etc.), and the opening of the first compartment pocket is provided with a first pocket zipper 14; the surface of the expansion section 5 is provided with a second compartment pocket for placing an ICE WALL (ice barrier, commonly ice packs, ice blocks, ice pads, etc.), and the opening of the second compartment pocket is provided with a second pocket zipper 15. By adding compartments for placing insulated bags to the front and back of the bag body 1, the lunch bag proposed in this utility model can place an ICE WALL as needed during use, thereby enhancing and extending the insulation effect, reducing heat loss, and effectively prolonging the food's heat preservation time.
[0044] Furthermore, the main zipper 3, the secondary zipper 4, the first slip pocket zipper 14, and the second slip pocket zipper 15 are all made of waterproof nylon. The design of the waterproof nylon zipper enhances the airtightness of the inner cavity of the bag body 1, thereby reducing the rate at which internal heat is lost and promoting long-term heat preservation.
[0045] Combination Figure 4 As shown, a buckle 16 is further provided between the outer surface of the bag body 1 and one end of the first handle 9, and one end of the first handle 9 is detachably connected to the bag body 1 through the buckle 16.
[0046] In one embodiment, the buckle 16 can be a insert connected to the bag body 1 and a slot connected to the first handle 9. Through the cooperation of the insert and the slot, the detachable first handle 9 can hang the lunch bag in different positions.
[0047] As another implementation, the buckle 16 can be a slot connected to the bag body 1 and a tab connected to the first handle 9. Through the cooperation of the tab and the slot, the detachable first handle 9 can hang the lunch bag in different positions.
[0048] Combination Figure 9 As shown, the package body 1, the cover 2, and the expansion section 5 each include an outer layer 11, an inner layer 12, and an inner lining layer 13. The outer layer 11 is made of water-repellent coated PU fabric, the inner layer 12 is made of antibacterial and bacteriostatic aluminum film, and the inner lining layer 13 is made of high-density foam composite aluminum film.
[0049] Furthermore, the inner layer 12 is made of 0.17mm antibacterial aluminum film. The inner layer 12 is fixed by high-frequency hot pressing using the antibacterial aluminum film, which not only ensures the freshness of the food but also achieves a waterproof effect. Thus, the inner layer 12 can inhibit bacterial growth. Combined with the waterproof nylon zipper for sealing and waterproofing, it can effectively reduce the environment for bacterial growth and ensure food safety.
[0050] Furthermore, the inner lining layer 13 is made of 10mm PE cotton composite aluminum film. By using high-density foam composite aluminum film in the inner lining layer 13, it can effectively prevent external temperature from entering the bag while reflecting the heat diffused inside back into the bag. Moreover, through the heat insulation and heat reflection effect of the inner lining layer 13, combined with the waterproof sealing and waterproofing of the waterproof nylon zipper and the ICE WALL auxiliary heat preservation design, heat loss can be reduced in multiple dimensions, effectively extending the food insulation time and ensuring the taste and temperature of the food.
[0051] Furthermore, the outer layer 11 is made of water-repellent checkered camouflage coated PU fabric (the camouflage pattern is not shown in this article). The camouflage coated PU design combines aesthetics with an outdoor style, meeting the visual needs of outdoor activities. The PU coating also enhances the fabric's abrasion resistance, extending the bag's lifespan. In addition, the water-repellent design of the outer fabric, the waterproof nylon zipper, and the high-frequency heat-pressed waterproof structure of the inner layer 12 create double waterproof protection for the lunch bag, effectively preventing external moisture penetration or internal soup leakage, thus improving the bag's durability and ease of cleaning.
[0052] The working principle of this antibacterial, bacteriostatic, and heat-insulating lunch pack will be explained in detail below.
[0053] like Figures 1-9 As shown, when using the bag, the user can first open the main zipper 3, then place the food inside the bag body 1. During this process, the user can open the secondary zipper 4 as needed, depending on the amount of food, to expand the volume of the bag body 1 through the expansion section 5. Finally, the user can close the main zipper 3 to seal the bag body 1, preventing internal heat loss or external moisture infiltration. The user can also choose the appropriate carrying method based on the arrangement of the food and the specific carrying scenario.
[0054] When using the hand-carrying method, the first handle 9 or the second handle 10 can be held by hand, and the bag body 1 can be carried stably through the load-bearing structure of the handle;
[0055] When using the shoulder strap 6 for suspension, the connectors at both ends of the shoulder strap 6 are engaged with the first hook 7 to make the bag body 1 hang vertically, suitable for carrying on one shoulder, crossbody, or other similar scenarios; or the shoulder strap 6 is engaged with the second hook 8 to make the bag body 1 hang horizontally, suitable for hanging on bicycle handlebars, outdoor carriers, or other fixed scenarios.
[0056] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.
[0057] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. An anti-bacterial and anti-fungal thermal lunch bag, characterized in that: The lunch bag includes a bag body and a bag lid. The bag body and the bag lid are connected by a main zipper. The side of the bag body away from the bag lid is integrally connected to an expansion section by a secondary zipper. The outer surface of the bag body is provided with a first hook for cooperating with a shoulder strap to make the lunch bag hang vertically. The outer surface of the bag lid is provided with a second hook for cooperating with a shoulder strap to make the lunch bag hang horizontally. The outer surface of the bag body is connected to a first handle, and the outer surface of the bag lid is connected to a second handle. The package body, cover, and expansion section each include an outer layer, an inner layer, and an inner lining layer. The outer layer is made of water-repellent coated PU fabric, the inner layer is made of antibacterial and bacteriostatic aluminum film, and the inner lining layer is made of high-density foam composite aluminum film.
2. The anti-bacterial and anti-fungal thermal lunch box as claimed in claim 1, wherein: The surface of the cover is provided with a first compartment pocket for placing an ice barrier, and the opening of the first compartment pocket is provided with a first pocket zipper.
3. The anti-bacterial and anti-fungal thermal lunch box as claimed in claim 2, wherein: The surface of the expansion section is provided with a second compartment pocket for placing an ice barrier, and the opening of the second compartment pocket is provided with a second pocket zipper.
4. The anti-bacterial and anti-fungal thermal lunch box as claimed in claim 3, wherein: The main zipper, secondary zipper, first pocket zipper, and second pocket zipper are all made of waterproof nylon.
5. The anti-bacterial and anti-fungal thermal lunch box as claimed in claim 1, wherein: There are two first hooks, which are symmetrically distributed about the central axis of the first handle. The two first hooks are respectively located on the upper part of opposite sides of the bag body. The two ends of the shoulder strap are detachably connected to the corresponding first hooks.
6. The anti-bacterial and anti-fungal thermal lunch box as claimed in claim 1, wherein: The extension direction of the first handle is perpendicular to the extension direction of the second handle.
7. The antibacterial and bacteriostatic insulated lunch pack according to claim 6, characterized in that: The second hook is provided in two parts, and the two second hooks are symmetrically distributed about the central axis of the second handle, and the two ends of the shoulder strap are detachably connected to the corresponding second hooks.
8. The antibacterial and bacteriostatic insulated lunch pack according to claim 1, characterized in that: A buckle is provided between the outer surface of the bag body and one end of the first handle, and one end of the first handle is detachably connected to the bag body through the buckle.
9. The antibacterial and bacteriostatic insulated lunch pack according to claim 1, characterized in that: The inner layer is made of 0.17mm antibacterial and bacteriostatic aluminum film.
10. The antibacterial and bacteriostatic insulated lunch pack according to claim 1, characterized in that: The inner lining is made of 10mm PE cotton composite aluminum film.