A high strength sealed thermal bag

Abstract

The utility model discloses a kind of high-strength sealing heat preservation bags, it is related to heat preservation bag technical field, including heat preservation bag main part and sealing cover, the opening end of heat preservation bag main part is fixed with bag body port piece, annular fitting groove is opened in the top of bag body port piece, magnet strip is embedded in fitting groove;Sealing cover bottom is equipped with the sealing element of with the shape matching of fitting groove, the sealing element includes: elastic sealing ring, iron strip embedded in the middle of sealing ring, two rows of air bags fixedly on the both sides of iron strip symmetry;When the sealing element is pressed into fitting groove, iron strip and magnet strip are positioned by magnetic adsorption, while the air bag is extruded and expands to both sides;In the technical scheme provided by the utility model, by magnetic locking assembly and air bag enhancement design, the heat preservation bag is realized better sealing effect.Meanwhile heat preservation bag uses multilayer composite material structure, can significantly prolong heat preservation time, meet the demand of different articles to heat preservation or refrigeration.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation bag technology, and in particular to a high-strength sealed thermal insulation bag. Background Technology

[0002] In the current market, insulated bags are widely used in various fields such as food insulation, pharmaceutical refrigeration, and outdoor adventure. Their core requirement is to keep the contents within a suitable temperature range and prevent external environmental changes from affecting them. Traditional insulated bags mainly rely on single or simple multi-layer insulation materials and closure methods such as zippers or buttons, which often have problems such as insufficient sealing, short insulation time, and poor durability, especially in extreme weather conditions or long-term outdoor use scenarios. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a high-strength sealed and heat-insulating bag to solve the problems in the background art.

[0004] In view of this, the present invention provides a high-strength sealed heat-insulating bag, including a heat-insulating bag body and a sealing cap. The opening end of the heat-insulating bag body is fixedly provided with a bag body port piece. The top of the bag body port piece is provided with an annular fitting groove, and a magnetic strip is embedded in the fitting groove.

[0005] The bottom of the sealing cap is provided with a sealing element that matches the shape of the fitting groove, the sealing element comprising:

[0006] Elastic sealing ring,

[0007] An iron strip embedded in the center of the sealing ring.

[0008] Two rows of air chambers are symmetrically fixed to both sides of the iron bar;

[0009] When the sealing element is pressed into the mating groove, the iron strip and the magnetic strip are magnetically attracted and positioned, while the airbag is squeezed and expands to both sides, forcing the sealing ring to fit tightly against the side wall of the mating groove, forming an airtight seal.

[0010] Optionally, the main body of the heat-insulating bag includes, from the inside out, a moisture-proof layer, a reinforcing layer, a high-efficiency heat insulation layer, and a wear-resistant and waterproof layer, wherein the reinforcing layer is made of polybutylene terephthalate.

[0011] Optionally, the wear-resistant and waterproof layer is made of polytetrafluoroethylene (PTFE).

[0012] Optionally, the high-efficiency thermal insulation layer is made of aerogel or foamed polyurethane material.

[0013] Optionally, the moisture-proof layer is made of ethylene-vinyl alcohol copolymer material.

[0014] Optionally, the outer bottom of the main body of the insulated bag is provided with an insulated protective bottom bag.

[0015] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0016] 1. This utility model discloses a high-strength sealed insulated bag. Through a magnetic locking component and airbag reinforcement design, this insulated bag achieves a superior sealing effect. The sealing process is not only simple and quick, but it also effectively prevents air and moisture penetration, ensuring the long-term stability of the internal environment of the insulated bag. Simultaneously, the insulated bag adopts a multi-layer composite material structure, which not only blocks moisture but also significantly reduces heat transfer, significantly extending the insulation time and meeting the insulation or refrigeration needs of various items.

[0017] 2. This utility model provides a high-strength sealed thermal insulation bag. The use of a wear-resistant and waterproof layer, as well as the design of a thermal insulation and protective bottom bag, significantly enhances the thermal insulation bag's resistance to the external environment, reduces wear and damage, and can maintain good performance even in harsh environments, thus extending the product's lifespan.

[0018] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a partial cross-sectional schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the bag layers of the main body of the thermal insulation bag of this utility model;

[0023] Figure 4 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Main body of the insulated bag; 11. Moisture-proof layer; 12. Reinforcing layer; 13. High-efficiency heat insulation layer; 14. Wear-resistant and waterproof layer; 2. Sealing cap; 3. Fitting groove; 4. Magnetic strip; 5. Sealing element; 51. Sealing ring; 52. Iron strip; 53. Airbag; 6. Bag end fitting; 7. Insulated protective bottom bag. Detailed Implementation

[0025] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0026] The following describes a high-strength sealed and heat-insulating bag according to an embodiment of the present invention in detail with reference to the accompanying drawings.

[0027] Example

[0028] For easier understanding, please refer to Figures 1 to 4 An embodiment of a high-strength sealed thermal insulation bag provided by this utility model includes a thermal insulation bag body 1 and a sealing cap 2, characterized in that:

[0029] The opening end of the heat-insulating bag body 1 is fixedly provided with a bag body port piece 6, and the top of the bag body port piece 6 is provided with an annular fitting groove 3, and a magnetic strip 4 is embedded in the fitting groove 3.

[0030] The bottom of the sealing cap 2 is provided with a sealing element 5 that matches the shape of the fitting groove 3, and the sealing element 5 includes:

[0031] 51 elastic sealing ring

[0032] An iron strip 52 is embedded in the middle of the sealing ring 51.

[0033] Two rows of air chambers 53 are symmetrically fixed on both sides of the iron bar 52;

[0034] When the sealing element 5 is pressed into the fitting groove 3, the iron strip 52 and the magnetic strip 4 are magnetically attracted and positioned, and at the same time the airbag 53 is squeezed and expands to both sides, forcing the sealing ring 51 to fit tightly against the side wall of the fitting groove 3 to form an airtight seal.

[0035] It should be noted that the opening end of the main body 1 of the heat-insulating bag is fixedly installed with the bag port piece 6 by injection molding or hot pressing. An annular fitting groove 3 is opened on the top of the port piece. A magnet strip 4 is embedded in the fitting groove 3. The magnet strip 4 is made of neodymium iron boron material and is fixed by adhesive or buckle to ensure magnetic stability and prevent it from falling off.

[0036] The sealing element 5 at the bottom of the sealing cover 2 consists of an elastic sealing ring 51, an iron strip 52, and two air bladders 53. The sealing ring 51 is made of silicone rubber, which has high elasticity and temperature resistance; the iron strip 52 is embedded in the middle of the sealing ring 51 and magnetically attracted to the magnetic strip 4; the air bladders 53 are made of TPU thermoplastic polyurethane material, symmetrically distributed on both sides of the iron strip 52, and are integrally molded by injection molding.

[0037] Sealing principle: When the sealing cap 2 is pressed into the body 1 of the insulation bag, the iron strip 52 and the magnetic strip 4 are magnetically attracted to each other, achieving rapid positioning. The airbag 53 is compressed and expands to both sides, forcing the sealing ring 51 to fit tightly against the side wall of the fitting groove 3, forming a double seal: magnetic attraction fixation + airbag 53 expansion seal, which significantly improves airtightness and heat preservation performance.

[0038] The magnetic adsorption design of the magnetic strip 4 and the iron strip 52 makes the closing operation of the sealing cap 2 and the body of the insulation bag 1 more convenient, eliminating the need for manual alignment and making it suitable for rapid operation in low-temperature or humid environments. The air bladder 53, after being compressed and inflated, fills the gap between the sealing ring 51 and the fitting groove 3, effectively blocking airflow and increasing the insulation time of the insulation bag. The silicone rubber sealing ring 51 and the TPU air bladder 53 have a temperature resistance range of -40℃ to 120℃, adapting to extreme temperature environments and are not prone to aging with long-term use.

[0039] In some embodiments, the heat-insulating bag body 1 includes, from the inside out, a moisture-proof layer 11, a reinforcing layer 12, a high-efficiency heat insulation layer 13, and a wear-resistant and waterproof layer 14, wherein the reinforcing layer 12 is made of polybutylene terephthalate.

[0040] It should be noted that the main body 1 of the thermal bag consists of the following components from the inside out:

[0041] Moisture barrier 11: Made of ethylene-vinyl alcohol copolymer EVOH, which blocks water vapor penetration and prevents internal items from getting damp.

[0042] Reinforcing layer 12: Made of polybutylene terephthalate (PBT) material, hot-pressed to provide high strength and tear resistance.

[0043] High-efficiency thermal insulation layer 13: Made of aerogel or foamed polyurethane, formed by vacuum injection or spraying process, reducing thermal conductivity to ≤0.02W / m·K.

[0044] Wear-resistant and waterproof layer 14: Made of polytetrafluoroethylene (PTFE) coating, with a surface hardness ≥9H, it has excellent scratch resistance and waterproof performance.

[0045] The PBT reinforcing layer 12 has a tensile strength ≥80MPa, offering more than twice the tear resistance compared to traditional PE insulation bags, making it suitable for transporting heavy objects or outdoor activities. The combination of the EVOH moisture-proof layer 11 and the PTFE abrasion-resistant and waterproof layer 14 keeps the insulation bag lightweight even in humid environments, with a scratch-resistant surface and a service life extended by more than 50%. The high-efficiency insulation layer 13 provides superior insulation performance compared to traditional aluminum foil materials, with a tested insulation time of over 8 hours at room temperature (25℃).

[0046] In some embodiments, the abrasion-resistant and waterproof layer 14 is made of polytetrafluoroethylene (PTFE).

[0047] It should be noted that the wear-resistant and waterproof layer 14 has been optimized.

[0048] The polytetrafluoroethylene (PTFE) coating is uniformly applied to the outer surface of the main body 1 of the insulated bag using an electrostatic spraying process, with a thickness of 50-100μm, ensuring a waterproof rating of IPX71 with no leakage after immersion in 1 meter of water for 30 minutes. The surface undergoes nano-modification treatment, resulting in a friction coefficient ≤0.1, reducing frictional wear with other objects.

[0049] In some embodiments, the high-efficiency thermal insulation layer 13 is made of aerogel or foamed polyurethane material.

[0050] It should be noted that the selection of high-efficiency insulation layer 13 is as follows:

[0051] Aerogel solution: Silica aerogel is used, which is filled into the main body 1 of the insulation bag using vacuum encapsulation technology, with a density of 0.05-0.2 g / cm³. 3 Thermal conductivity ≤0.013W / m·K.

[0052] Polyurethane foam solution: It is formed by a one-step foaming process, with a closed-cell rate of ≥95% and a thermal conductivity of ≤0.022W / m·K, and the cost is reduced by 60% compared with aerogel.

[0053] The high-efficiency heat insulation layer 13 is only 1 / 3 the thickness of traditional aluminum foil and weighs 50% less, making it easy to carry.

[0054] In some embodiments, the moisture barrier 11 is made of an ethylene-vinyl alcohol copolymer material.

[0055] It should be noted that the moisture barrier 11 of the ethylene-vinyl alcohol copolymer is bonded to the reinforcing layer 12 through a co-extrusion process, with a thickness of 20-50 μm and a water vapor permeability ≤2 g / m². 2 • 24h. The surface is coated with nano-zinc oxide (ZnO) antibacterial agent to inhibit mold growth. The barrier properties of the EVOH moisture barrier layer 11 allow the insulated bag to remain dry inside even in high humidity environments with a relative humidity of ≥90%, making it suitable for storing fresh food or precision instruments. The nano-ZnO coating has an antibacterial rate of ≥99%, extending the shelf life of food and reducing the risk of cross-contamination.

[0056] In some embodiments, an insulating protective bottom bag 7 is provided on the outer bottom of the main body 1 of the insulating bag.

[0057] It should be noted that the thermal insulation protective bottom bag 7 adopts a double-layer structure: the inner layer is an aerogel insulation layer, and the outer layer is a PBT reinforcement layer, which is fixed to the bottom of the thermal insulation bag body 1 by ultrasonic welding. The edges of the thermal insulation protective bottom bag 7 are provided with anti-slip protrusions to increase the friction with the contact surface and prevent the thermal insulation bag from sliding.

[0058] The insulating layer of the insulated protective bottom bag 7 effectively blocks heat conduction from the ground, preventing the insulated bag from failing due to the bottom contacting cold / hot surfaces. The anti-slip raised design makes the insulated bag less likely to tip over in tilted or bumpy environments, making it suitable for vehicle or outdoor use.

[0059] Working principle: When the user aligns the sealing cap 2 with the opening of the insulated bag body 1 and presses it down, the iron strip 52 at the bottom of the sealing cap 2 will attract and tightly engage with the magnetic strip 4 in the locking groove 3. This magnetic locking is not only simple and quick to operate, but also forms a tight sealed environment, effectively preventing the exchange of air between the inside and outside, thereby maintaining the temperature stability inside the insulated bag. The design of the two air bladders 53 in the sealing ring 51 plays a key role in the attraction process between the sealing element 5 and the locking groove 3. When magnetic locking occurs, the air bladders 53 are compressed, expand to both sides and press tightly against the wall of the locking groove 3, further enhancing the contact pressure and sealing performance between the sealing ring 51 and the locking groove 3, achieving a higher level of sealing effect.

[0060] The moisture-proof layer 11 effectively prevents external moisture from penetrating into the insulated bag, protecting the contents from dampness. The reinforcing layer 12 makes the bag less prone to damage when subjected to external forces. The high-efficiency heat insulation layer 13 effectively isolates external heat sources, maintaining a stable internal temperature over a long period. The abrasion-resistant and waterproof layer 14 has excellent abrasion resistance, extending its service life.

[0061] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A high-strength sealed thermal insulation bag, comprising a thermal insulation bag body (1) and a sealing cap (2), characterized in that: The opening end of the heat-insulating bag body (1) is fixedly provided with a bag body port piece (6), and the top of the bag body port piece (6) is provided with an annular fitting groove (3), and a magnetic strip (4) is embedded in the fitting groove (3); The bottom of the sealing cap (2) is provided with a sealing element (5) that matches the shape of the fitting groove (3), and the sealing element (5) includes: Elastic sealing ring (51), An iron strip (52) is embedded in the middle of the sealing ring (51). Two rows of air chambers (53) are symmetrically fixed on both sides of the iron bar (52); When the sealing element (5) is pressed into the fitting groove (3), the iron strip (52) and the magnetic strip (4) are magnetically attracted and positioned. At the same time, the airbag (53) is squeezed and expands to both sides, forcing the sealing ring (51) to fit tightly against the side wall of the fitting groove (3) to form an airtight seal.

2. A high strength sealed thermal bag according to claim 1, wherein: The main body (1) of the heat-insulating bag includes, from the inside out, a moisture-proof layer (11), a reinforcing layer (12), a high-efficiency heat insulation layer (13) and a wear-resistant and waterproof layer (14). The reinforcing layer (12) is made of polybutylene terephthalate.

3. A high strength sealed thermal bag according to claim 2, wherein: The wear-resistant and waterproof layer (14) is made of polytetrafluoroethylene.

4. A high strength sealed thermal bag according to claim 2, wherein: The high-efficiency heat insulation layer (13) is made of aerogel or foamed polyurethane material.

5. A high strength sealed thermal bag according to claim 2, wherein: The moisture-proof layer (11) is made of ethylene-vinyl alcohol copolymer material.

6. A high-strength sealed and heat-insulating bag according to claim 1, characterized in that: The outer bottom of the main body (1) of the heat-insulating bag is provided with a heat-insulating protective bottom bag (7).

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