Green and environment-friendly cold chain circulation heat preservation carton

Abstract

The invention discloses an environment-friendly cold chain circulation heat preservation carton, and relates to the technical field of heat preservation cartons, the environment-friendly cold chain circulation heat preservation carton comprises a cold chain box, a heat insulation and preservation layer and a phase change layer are arranged in the cold chain box, the heat insulation and preservation layer is located on the outer side of the phase change layer, the heat insulation and preservation layer is aerogel heat insulation felt, and the phase change layer is filled with fatty acid; according to the invention, the fatty acid phase-change material filled in the phase-change layer can sensitively sense the temperature change in the box and generate phase change in time, when the temperature rises, solid fatty acid is converted into liquid fatty acid, and a large amount of heat is absorbed to prevent the temperature from rising rapidly; and when the temperature drops, the liquid fatty acid turns back to the solid state to release heat, so that the temperature drop speed is slowed down, the temperature in the box is always maintained in an appropriate stable interval, the fresh-keeping time of the cold-chain transportation articles is greatly prolonged, and the quality and safety of the articles are not influenced by temperature fluctuation.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation cartons, and in particular to a green and environmentally friendly cold chain circulation thermal insulation carton. Background Art

[0002] With the continuous development of global trade and the continuous improvement of people's living standards, the importance of the cold chain logistics industry in many fields such as food, medicine, and fresh agricultural products has become increasingly prominent.

[0003] For goods such as perishable foods and temperature-sensitive pharmaceuticals, maintaining a precise and stable low temperature environment during transportation and storage is key to ensuring their quality, safety and effectiveness.

[0004] Traditional cold chain packaging materials and technologies have many limitations. In terms of thermal insulation performance, common cold chain packaging materials such as polystyrene foam boards and polyurethane foams have a certain thermal insulation effect, but their thermal conductivity is relatively high, making it difficult to effectively maintain a constant temperature inside the box during long-term transportation and complex environmental conditions.

[0005] The plastic foam materials used in large quantities in traditional cold chain packaging are difficult to degrade naturally after their service life ends. They often remain in the environment for decades or even hundreds of years, causing long-term and serious pollution to the soil, water and other ecological environments, exacerbating the problem of white pollution, and running counter to the current global concept of sustainable development.

[0006] In view of this, this application is hereby filed. Summary of the invention

[0007] The purpose of the present invention is to provide a green and environmentally friendly cold chain circulation insulation carton to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the present invention provides a green and environmentally friendly cold chain circulation insulated carton, including a cold chain box, the interior of the cold chain box is provided with a thermal insulation layer and a phase change layer, the thermal insulation layer is located on the outside of the phase change layer, the thermal insulation layer is an aerogel insulation felt, and the interior of the phase change layer is filled with fatty acids.

[0009] Furthermore, the cold chain box includes a pressure-resistant layer, and the pressure-resistant layer is composed of corrugated paper with staggered flutes.

[0010] Furthermore, the cold chain box also includes a moisture-proof layer, which wraps the outer side of the pressure-resistant layer, the heat-insulating layer and the phase change layer, and the moisture-proof layer is composed of plastic-free coated paper.

[0011] Furthermore, a top cover is connected to the back of the cold chain box, a sealing groove is provided on the top surface of the cold chain box, and a sealing ring is provided on the top surface of the top cover.

[0012] Furthermore, a cloth belt ring is provided on the front of the cold chain box, and a loop Velcro is provided on the top surface of the top cover.

[0013] Furthermore, a display bar is provided on the front of the cold chain box, the interior of the display bar is filled with alcohol, one end of a heat-conducting block is connected to the back of the display bar, and the other end of the heat-conducting block is located on the inner side of the cold chain box.

[0014] Furthermore, scale bars are etched on both sides of the display bar.

[0015] Furthermore, anti-collision corners are provided at the four corners of the bottom surface of the cold chain box and the four corners of the bottom surface of the top cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the fatty acid phase change material filled in the phase change layer can sensitively sense the temperature changes in the box and undergo phase changes in a timely manner. When the temperature rises, the solid fatty acid turns into liquid, absorbing a large amount of heat to prevent the temperature from rising rapidly; when the temperature drops, the liquid fatty acid turns back into solid and releases heat, slowing down the rate of temperature drop, so that the temperature in the box is always maintained in a suitable stable range, greatly extending the shelf life of cold chain transportation items and ensuring that the quality and safety of the items are not affected by temperature fluctuations.

[0017] In the present invention, the aerogel insulation felt of the thermal insulation layer, the fatty acid of the phase change layer and the plastic-free coated paper of the moisture-proof layer all have good environmental performance. The aerogel insulation felt can be recycled or degraded after the end of its service life; the fatty acid is a natural organic substance with abundant sources and is biodegradable; the plastic-free coated paper can be recycled and pulped, does not contain plastic components, and reduces the harm of plastic waste to the environment. The selection of materials for the entire cold chain box follows the concept of environmental protection and meets the requirements of sustainable development.

[0018] In the present invention, the equipped alcohol-filled display bar and the heat-conducting block constitute a simple and effective temperature monitoring system. When the temperature in the box changes, the heat is transferred to the alcohol in the display bar through the heat-conducting block. The volume and liquid level of the alcohol change accordingly due to thermal expansion and contraction. The scale bars etched on both sides of the display bar can intuitively reflect the height change of the alcohol column. The staff can quickly and accurately obtain the real-time temperature information in the box by observing the position of the alcohol column on the scale bar with the naked eye, and timely grasp the dynamic temperature changes, so as to take temperature control measures when necessary to ensure that the cold chain transportation temperature is always under strict monitoring and to ensure the quality and safety of goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of a green and environmentally friendly cold chain circulation insulation carton; Figure 2 This is the rear view of a green and environmentally friendly cold chain circulation insulation carton; Figure 3This is a schematic diagram of the cross-sectional structure of a green and environmentally friendly cold chain circulation insulation carton; Figure 4 for Figure 1 The enlarged view of point A in the middle; Figure 5 for Figure 2 The enlarged view of point B in the middle; Figure 6 for Figure 3 Enlarged view of point C in the middle.

[0020] In the figure: 1. Cold chain box; 101. Pressure-resistant layer; 102. Thermal insulation layer; 103. Phase change layer; 104. Moisture-proof layer; 2. Top cover; 3. Sealing groove; 301. Sealing ring; 4. Cloth belt ring; 401. Loop Velcro; 5. Anti-collision corner; 6. Display bar; 601. Scale bar. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-6 , the present invention provides a technical solution: A green and environmentally friendly cold chain circulation insulation carton, comprising a cold chain box 1, wherein a heat insulation layer 102 and a phase change layer 103 are arranged inside the cold chain box 1, wherein the heat insulation layer 102 is located on the outside of the phase change layer 103, wherein the heat insulation layer 102 is an aerogel insulation felt, wherein the inside of the phase change layer 103 is filled with fatty acids, wherein the cold chain box 1 comprises a pressure-resistant layer 101, wherein the pressure-resistant layer 101 is composed of corrugated paper with staggered flutes, wherein the cold chain box 1 further comprises a moisture-proof layer 104, which wraps the outside of the pressure-resistant layer 101, the heat insulation layer 102 and the phase change layer 103, wherein the moisture-proof layer 104 is composed of plastic-free coated paper.

[0023] The phase change layer 103 is one of the core components for temperature control of the cold chain box 1. The fatty acid phase change material filled inside plays a vital role in the temperature control system of the entire cold chain transportation and plays an indispensable key role.

[0024] Due to their unique physical and chemical properties, fatty acids exhibit magical phase change characteristics during temperature changes. When the external ambient temperature tends to rise, and as a result, the temperature inside the box also shows signs of rising, the fatty acids in the solid state will keenly sense this subtle temperature change.

[0025] Under the continuous action of heat, the fatty acid molecules begin to become gradually active, the interaction force between them is weakened, the originally tight and ordered solid structure gradually disintegrates, and then a phase transition occurs, smoothly transforming from solid to liquid.

[0026] During this phase change process, fatty acids will act like a greedy heat absorber, absorbing a large amount of heat from the surrounding environment and converting this heat into the energy required for its own phase change, thereby effectively preventing the temperature in the box from rising rapidly and playing a very significant heat absorption and cooling effect, as if building an invisible "temperature buffer zone" in the box.

[0027] On the contrary, when the outside temperature drops suddenly and the temperature inside the box is also at risk of dropping, the liquid fatty acids will start the reverse phase change process in an orderly manner based on the temperature change signal.

[0028] At this time, under the influence of the low temperature environment, the fatty acid molecules readjust their arrangement, the distance between them gradually shortens, the intermolecular forces gradually increase, and the liquid fatty acids gradually return to a solid state.

[0029] During this process, the heat absorbed and stored during the temperature rise phase change will be slowly released, just like providing a "heat source" for the box, continuously replenishing heat into the box and slowing down the rate of temperature drop in the box, so that the temperature in the box can always be maintained in a relatively stable and appropriate range, successfully extending the shelf life of items during cold chain transportation and ensuring that the quality and safety of items are not affected by temperature fluctuations.

[0030] The heat insulation layer 102 of the cold chain box 1 is made of aerogel insulation felt. Aerogel has an extremely low thermal conductivity and can effectively prevent heat conduction.

[0031] Its special nanoporous structure requires heat to be transferred through a long and tortuous path, thereby greatly reducing the rate at which heat is transferred from outside the box to inside the box or from inside the box to outside the box.

[0032] During cold chain transportation, whether in a high temperature environment or a low temperature environment, aerogel insulation felt can provide a good insulation barrier for the items in the box and maintain a relatively stable temperature inside the box.

[0033] Although the aerogel insulation felt of the thermal insulation layer 102 is a high-performance material, it can be recycled or degraded after its service life ends and will not cause long-term pollution to the environment.

[0034] The fatty acid of the phase change layer 103 is a relatively environmentally friendly natural organic substance that is abundant in source and biodegradable.

[0035] The moisture-proof layer 104 is made of plastic-free coated paper, which is recyclable and pulpable, does not contain any plastic components, and reduces the harm of plastic waste to the environment.

[0036] The material selection of the entire cold chain box 1 follows the concept of environmental protection and meets the requirements of sustainable development.

[0037] Due to its good thermal insulation and phase change temperature control performance, it can effectively reduce the energy consumption of refrigeration equipment during cold chain transportation.

[0038] Compared with traditional cold chain packaging, this type of carton can better maintain a low-temperature environment, reduce the electricity or other energy consumed by frequent startup of refrigeration equipment, thereby reducing the overall carbon footprint of cold chain logistics and has positive significance for environmental protection.

[0039] The pressure-resistant layer 101 is made of corrugated paper with staggered flutes, and has a certain pressure resistance, and can withstand objects of a certain weight and extrusion during transportation.

[0040] The compression-resistant layer 101 is constructed of corrugated paper with staggered flutes, and its unique structural design contains exquisite mechanical principles.

[0041] The peaks and valleys of corrugated paper are arranged in an interlaced manner, forming a three-dimensional structure similar to a honeycomb. When external pressure is applied to the box, the pressure first acts on the peaks of the corrugated paper.

[0042] Since there is a certain distance between the peaks and they are staggered, the pressure will be dispersed and transmitted to the surrounding areas along the peaks.

[0043] This dispersion effect allows the pressure on a single stress point to be effectively distributed, avoiding structural damage caused by excessive local pressure.

[0044] At the same time, corrugated paper itself has a certain elasticity and toughness, and will undergo slight deformation under pressure. This deformation can absorb part of the energy and further cushion the impact of external pressure on the inside of the box.

[0045] For example, when stacking multiple layers of cold chain boxes 1, the weight of the upper boxes borne by the lower boxes will be evenly distributed on the flutes of the corrugated paper. The dispersion of the flutes and the elastic deformation of the corrugated paper ensure that the box body will not be easily deformed or damaged due to heavy pressure.

[0046] Being able to bear items of a certain weight, the cold chain box 1 can be used to transport various cold chain products of different weights and volumes, from lighter medicines and foods to heavier frozen meats, etc., thus broadening its application scope.

[0047] In commercial cold chain logistics, it can meet diverse cargo transportation needs and improve the efficiency and flexibility of logistics transportation.

[0048] It can effectively resist extrusion during transportation and prevent damage to fragile items inside (such as glass-packaged medicines or delicate food gift boxes) due to deformation of the box.

[0049] For some products that have high requirements on shape and packaging integrity, such as carton packaging of high-end ice cream, the pressure-resistant layer 101 can ensure that it remains intact during transportation, thereby maintaining the beauty and sales value of the product.

[0050] As a common and relatively cheap material, corrugated paper has a low cost.

[0051] The pressure-resistant layer 101 is formed of corrugated paper with staggered flutes, which reduces the overall manufacturing cost of the cold chain box 1 while ensuring a certain pressure resistance. For enterprises that mass-produce and use the cold chain box 1, this can improve product quality and transportation safety without increasing too much cost, thereby enhancing the competitiveness of the product in the market.

[0052] A cloth belt ring 4 is provided on the front of the cold chain box 1 , and a loop Velcro 401 is provided on the top surface of the top cover 2 .

[0053] In order to ensure the stability of the top cover 2 during cold chain transportation, the cold chain box 1 adopts a simple and effective way of fixing the top cover 2.

[0054] A cloth belt ring 4 is specially provided on the front of the cold chain box 1 , and matching therewith, a loop Velcro 401 is provided on the top surface of the top cover 2 .

[0055] When the top cover 2 is successfully closed, the operator can easily pass the loop Velcro 401 through the tape ring 4 and then perform the pasting and fixing operation.

[0056] This fixing method seems simple, but contains a subtle design concept. Through the tight combination of the loop Velcro 401 and the cloth belt ring 4, the top cover 2 can be more firmly attached to the box body, forming an integral structural system.

[0057] During transportation, this fixing method can effectively prevent the top cover 2 from opening accidentally even in the face of various vibrations and bumps caused by severe shaking of the vehicle, frequent starts and stops, and rough roads.

[0058] Once the top cover 2 is accidentally opened, the low-temperature environment in the box will be destroyed, and a large amount of heat will flow in, which will greatly reduce the preservation effect of the cold chain items and may even cause the items to deteriorate and be damaged.

[0059] The stable top cover 2 fixed design reduces the occurrence of such risks and provides a solid guarantee for the safety and stability of cold chain transportation, allowing cold chain items to arrive at their destination safely and intact in an ideal low-temperature environment.

[0060] The back of the cold chain box 1 is connected with a top cover 2 , the top surface of the cold chain box 1 is provided with a sealing groove 3 , and the top surface of the top cover 2 is provided with a sealing ring 301 .

[0061] The design of the cold chain box 1 fully considers the synergy between heat preservation and sealing.

[0062] The top surface thereof is carefully provided with a sealing groove 3, and the corresponding top surface of the top cover 2 is provided with a sealing ring 301.

[0063] When the top cover 2 is slowly closed on the cold chain box 1, the sealing ring 301 is accurately embedded in the sealing groove 3, forming an extremely tight and seamless fitting connection between the two.

[0064] The unique design structure effectively blocks the air circulation path between the inside and outside of the box, minimizing the possibility of air leakage.

[0065] At the same time, since the transfer of heat depends largely on the conduction of a medium such as air, the close connection between the sealing ring 301 and the sealing groove 3 also greatly weakens the heat exchange rate.

[0066] Whether the high temperature heat waves from the outside try to invade the low temperature environment inside the box, or the low temperature cold air inside the box tends to dissipate outward, this sealed structure can create a relatively independent and stable temperature space for the items in the box, thereby further significantly enhancing the overall thermal insulation performance of the box, and laying a solid and reliable foundation for constant temperature control during cold chain transportation.

[0067] A display bar 6 is provided on the front of the cold chain box 1, the interior of the display bar 6 is filled with alcohol, the back of the display bar 6 is connected to one end of a heat conductive block, the other end of the heat conductive block is located on the inner side of the cold chain box 1, and scale bars 601 are etched on both sides of the display bar 6.

[0068] The cold chain box 1 is equipped with a simple and effective temperature monitoring system, the core component of which is a display bar 6 filled with alcohol.

[0069] The display bar 6 is closely connected to the environment inside the box through a carefully designed heat-conducting block, thereby constructing an information channel for heat transfer.

[0070] Alcohol, as a common substance with special thermophysical properties, has one of the most notable characteristics of thermal expansion and contraction.

[0071] When the temperature in the box changes even slightly, the heat will be quickly and accurately transferred to the alcohol in the display bar 6 through the heat conductive block, which is an efficient heat conduction medium.

[0072] When the temperature rises, the alcohol molecules gain more energy, they start to move more actively, and the average distance between the molecules gradually increases, which causes the volume of the alcohol to expand. As the volume continues to increase, the liquid level of the alcohol inside the display bar 6 will slowly rise, like a silent thermometer pointer, faithfully recording the temperature change.

[0073] On the contrary, when the temperature in the box decreases, the energy of the alcohol molecules gradually decreases, the movement speed slows down, the distance between the molecules also decreases, the volume of the alcohol shrinks accordingly, and the liquid level in the display bar 6 gradually decreases.

[0074] The carefully etched scale bars 601 on both sides of the display bar 6 are like an accurate temperature ruler, which can intuitively and clearly reflect every change in the height of the alcohol column.

[0075] With simple visual observation, the staff can quickly and accurately obtain the real-time temperature information in the box according to the position of the alcohol column on the scale bar 601, so as to timely grasp the dynamic changes of the temperature in the box, so as to take corresponding temperature control measures when necessary, to ensure that the temperature in the cold chain transportation process is always under strict monitoring and to ensure the quality and safety of the goods.

[0076] Anti-collision corners 5 are provided at the four corners of the bottom surface of the cold chain box 1 and the four corners of the bottom surface of the top cover 2 .

[0077] In the structural layout of the cold chain box 1, anti-collision design is a key link to ensure transportation safety.

[0078] Special anti-collision corners 5 are cleverly arranged at the four corners of the bottom surface of the cold chain box 1 and the four corners of the bottom surface of the top cover 2.

[0079] These anti-collision corners 5 are made of materials with excellent buffering performance, such as highly elastic rubber or new environmentally friendly buffering plastic.

[0080] During the long journey of cold chain transportation, it is inevitable to encounter various bumps, collisions and squeezing.

[0081] When the box is accidentally impacted from the outside, these anti-collision corners 5 distributed in key positions will quickly play their unique cushioning and protective role.

[0082] They are like small and tough shields that absorb and disperse impact force through their own elastic deformation, effectively transforming and dissipating external collision energy, thereby minimizing direct damage to the internal structure of the box caused by the impact force.

[0083] In addition, the anti-collision corners 5 can also provide comprehensive protection for various items loaded in the box, preventing the items from being shifted, damaged or even broken due to collision, effectively ensuring that the integrity of the cold chain box 1 is maintained and the internal items are always in a safe and sound state, thereby ensuring the quality and integrity of the cold chain transported goods.

Claims

1. A green and environmentally friendly cold chain circulation insulation carton, comprising a cold chain box (1), characterized in that: The cold chain box (1) is provided with a heat insulating layer (102) and a phase change layer (103) inside, the heat insulating layer (102) is located outside the phase change layer (103), the heat insulating layer (102) is an aerogel insulation felt, and the interior of the phase change layer (103) is filled with fatty acids.

2. A green and environmentally friendly cold chain circulation insulation carton as claimed in claim 1, characterized in that: The cold chain box (1) comprises a pressure-resistant layer (101), wherein the pressure-resistant layer (101) is composed of corrugated paper with staggered flutes.

3. A green and environmentally friendly cold chain circulation insulation carton as claimed in claim 2, characterized in that: The cold chain box (1) further comprises a moisture-proof layer (104) which wraps the outer sides of the pressure-resistant layer (101), the heat-insulating layer (102) and the phase-change layer (103); the moisture-proof layer (104) is made of plastic-free coated paper.

4. A green and environmentally friendly cold chain circulation insulation carton as claimed in claim 3, characterized in that: The back of the cold chain box (1) is connected to a top cover (2), the top surface of the cold chain box (1) is provided with a sealing groove (3), and the top surface of the top cover (2) is provided with a sealing ring (301).

5. A green and environmentally friendly cold chain circulation insulation carton as claimed in claim 4, characterized in that: The front of the cold chain box (1) is provided with a cloth belt ring (4), and the top surface of the top cover (2) is provided with a loop Velcro (401).

6. A green and environmentally friendly cold chain circulation insulation carton as claimed in claim 5, characterized in that: The front of the cold chain box (1) is provided with a display bar (6), the interior of the display bar (6) is filled with alcohol, the back of the display bar (6) is connected to one end of a heat conductive block, and the other end of the heat conductive block is located on the inner side of the cold chain box (1).

7. A green and environmentally friendly cold chain circulation insulation carton as claimed in claim 6, characterized in that: Scale bars (601) are etched on both sides of the display bar (6).

8. The green and environmentally friendly cold chain circulation insulation carton according to claim 7, characterized in that: Anti-collision corners (5) are provided at the four corners of the bottom surface of the cold chain box (1) and the four corners of the bottom surface of the top cover (2).

Images