A cold chain carton and method of making the same

Abstract

The application discloses a cold-chain carton and a preparation method thereof and belongs to the technical field of carton heat preservation. The carton comprises a box body, the box body comprises an outer layer and an inner layer, a heat preservation cavity is formed between the outer layer and the inner layer, a temperature guiding assembly is arranged on the surface of the inner layer, and the temperature guiding assembly can abut against the outer layer. When it is required to increase the temperature guiding performance of the box body, the temperature guiding assembly is abutted against the outer layer and the inner layer, so that the temperature can be transmitted through the temperature guiding assembly, thereby achieving better temperature guiding effect. When it is required to increase the heat preservation performance, the temperature guiding assembly is separated from the outer layer, so that the temperature of the outer layer cannot be directly transmitted to the inner layer, and the temperature needs to be transmitted through the cavity, thereby greatly increasing the overall heat preservation effect of the box body.

Description

TECHNICAL FIELD

[0001] The application discloses a cold-chain carton and a preparation method thereof and belongs to the technical field of carton heat preservation. BACKGROUND

[0002] The cold-chain carton is a carton with good heat insulation effect and is specially used for cold-chain use.

[0003] The heat transfer of the existing cold-chain carton is kept fixed, which causes the freezing speed and thawing speed of products in the carton to be consistent. Since the heat preservation effect of the cold-chain carton is generally excellent, the products in the carton are relatively slow when being frozen.

[0004] The present application provides a new solution to solve the above problems. SUMMARY

[0005] The application aims to solve the above problems and provides a cold-chain carton and a preparation method thereof.

[0006] The application achieves the above-mentioned purpose through the following technical scheme. The cold-chain carton and the preparation method thereof comprise a box body, the box body comprises an outer layer and an inner layer, a heat preservation cavity is formed between the outer layer and the inner layer, a temperature guide assembly is arranged on the surface of the inner layer, and the temperature guide assembly can abut against the outer layer.

[0007] Preferably, the temperature guide assembly comprises a sliding base and a temperature guide piece sliding on the sliding base, the sliding base is fixedly connected with the inner layer, and the sliding base is filled with a phase change liquid.

[0008] Preferably, the sliding base is provided with a containing cavity for containing the liquid phase change liquid.

[0009] Preferably, the sliding base is provided with a spring for allowing the temperature guide piece to retract into the sliding base when the internal and external air pressures of the sliding base are in a balanced state.

[0010] Preferably, the inner layer is provided with a one-way valve for allowing air in the heat preservation cavity to be discharged in a one-way manner.

[0011] Preferably, the inner wall of the heat preservation cavity is compounded with an airtight layer.

[0012] A preparation method of a cold-chain carton is characterized by comprising the following steps.

[0013] S1: producing a heat preservation layer of the inner layer and the outer layer, that is, injecting a foaming material into a mold to form the inner layer, and then compounding an airtight layer on the concave side of the inner layer and the abutting surface side of the outer layer and the inner layer, and installing a one-way valve into the inner layer;

[0014] S2 production of the surface layer of the inner layer and the outer layer: the inner layer and the outer layer are compounded by using a corrugated paperboard machine, and the corrugated paperboard is located on the side far away from the inner layer and the outer layer;

[0015] S3 assembly of the temperature guide assembly: the heat-conducting metal is punched by using a punch machine, so that the heat-conducting metal is formed into a sliding base and a temperature guide piece respectively, then the spring is sleeved on the temperature guide piece, and then the temperature guide piece is installed in the sliding base, then the liquid phase change liquid is filled in the sliding base, and finally the sliding base is sealed;

[0016] S4 installation of the temperature guide assembly: the temperature guide assembly is pasted to the inner layer recess according to the needs of the product;

[0017] S5 compounding of the inner layer and the outer layer: the inner layer and the outer layer are pasted to each other, and the air-tight layers are pasted to each other, then the sealing glue is adhered at the pasting position of the air-tight layers, then the cavity between the inner layer and the outer layer is vacuumized by using a vacuum generator through a one-way valve, and finally the sealing glue is dripped into the one-way valve port after the vacuumization is completed.

[0018] Compared with the prior art, the beneficial effects of the present application are: when it is necessary to increase the temperature guide performance of the box body, the temperature guide assembly abuts against the outer layer and the inner layer, so that the temperature can be transmitted through the temperature guide assembly, thereby achieving better temperature guide effect, and when it is necessary to increase the heat preservation performance, the temperature guide assembly is separated from the outer layer, so that the temperature of the outer layer cannot be directly transmitted to the inner layer, and the temperature transmission needs to be performed through the cavity, thereby greatly increasing the overall heat preservation effect of the box body. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic diagram of the first state of the present application;

[0020] Figure 2 It is a structure schematic diagram of the second state of the present application;

[0021] Figure 3 It is a cross-sectional structure schematic diagram of the present application;

[0022] Figure 4 It is a cross-sectional structure schematic diagram of another state of the present application.

[0023] Reference signs: 1, outer layer; 2, inner layer; 3, sliding base; 4, temperature guide piece; 5, one-way valve; 6, spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely used for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 A cold chain carton and a preparation method thereof, comprising a box body, the box body comprising an outer layer 1 and an inner layer 2, a heat preservation cavity being formed between the outer layer 1 and the inner layer 2, a temperature guide assembly being arranged on the surface of the inner layer 2, and the temperature guide assembly being abuttable with the outer layer 1.

[0026] When the product is used, the heat preservation cavity between the inner layer 2 and the outer layer 1 is used to make the outer layer 1 need to pass through the heat preservation cavity when transferring energy to the inner layer 2, and the heat preservation cavity is in a hollow state, so that the energy needs to be transferred to the air in the heat preservation cavity first when being transferred, and then transferred through the air. The air is a poor heat conductor and is enclosed in the heat preservation cavity and cannot flow, so that the energy transfer in the heat preservation cavity is very slow, so that the box body has very good heat preservation performance. When energy exchange between the inside and outside of the box body needs to be fast, the temperature guide assembly can be used to abut on the inner layer 2 and the outer layer 1 respectively, so that the inner layer 2 and the outer layer 1 are connected through the temperature guide assembly. Since the fixed heat conductivity is higher than that of air, the energy can be quickly transferred through the temperature guide assembly, so that the energy in the inside and outside of the box body can be transferred faster, achieving the effect of reducing the heat preservation performance. The product uses the state change of the heat preservation assembly to change the overall heat preservation performance of the box body, so that the user can select the product according to different needs.

[0027] The temperature guide assembly comprises a sliding base 3 and a temperature guide 4 sliding on the sliding base 3, the sliding base 3 is fixedly connected with the inner layer 2, the sliding base 3 is filled with phase change liquid, and the sliding base 3 is fixed on the inner layer 2, so that the inner layer 2 can better transmit energy with the sliding base 3, and because the temperature guide 4 slides on the sliding base 3, the energy transmission between the sliding base 3 and the temperature guide 4 can be directly carried out at the contact point, and when the temperature guide 4 contacts the outer layer 1, the temperature guide 4 can directly transmit energy to the outer layer 1, so that the temperature is transmitted, and because the sliding base 3 is filled with phase change liquid, when the temperature is higher than the phase change value, the phase change liquid is in a gaseous state, when the phase change liquid is in a gaseous state, the pressure in the sliding base 3 is increased, the sliding base 3 pushes the temperature guide 4 to slide, so that the temperature guide 4 is extended to contact the outer layer 1, so that the box can directly transmit low temperature along the outer layer 1 through the temperature guide 4, the sliding base 3 and the inner layer 2 when the product is frozen, and the refrigeration efficiency is higher, and as the temperature decreases, when the temperature of the phase change liquid is lower than the critical value, the phase change liquid is quickly liquefied, so that the pressure in the sliding base 3 is reduced, and then the temperature guide 4 is pushed back to the inside of the sliding base 3 by the pressure.

[0028] The sliding base 3 is provided with a containing cavity for containing liquid phase change liquid, the containing cavity can provide sufficient space for the phase change liquid, and can avoid the phase change liquid directly blocking the retraction of the temperature guide 4.

[0029] The sliding base 3 is provided with a spring 6 for retracting the temperature guide 4 into the sliding base 3 when the air pressure inside and outside the sliding base 3 is balanced, the spring 6 can keep the temperature guide 4 in the sliding base 3 when the air pressure inside and outside the base is kept the same, so as to avoid the temperature guide 4 from extending out due to the decrease of air pressure caused by the decrease of temperature of the heat preservation cavity.

[0030] The inner layer 2 is provided with a one-way valve 5 for unidirectional discharge of air in the heat preservation cavity, because heat transfer cannot be carried out in a vacuum environment, the product uses a vacuum generator to suck out the air in the heat preservation cavity, so that the inside of the heat preservation cavity is in a vacuum state, so as to utilize the non-heat conduction characteristic of vacuum to further improve the heat preservation performance of the heat preservation cavity, and the inner wall of the heat preservation cavity is compounded with an airtight layer, so that the heat preservation cavity cannot be in a vacuum state due to air penetration after being vacuumized, and the heat preservation performance is not reduced.

[0031] The preparation method of the cold chain carton of the embodiment comprises the following steps:

[0032] S1: Production of the heat preservation layer of the inner layer 2 and the outer layer 1: inject foaming material into a mold to form the inner layer 2, then compound an airtight layer on the concave side of the inner layer 2 and the bonding surface side of the outer layer 1 and the inner layer 2, and install the one-way valve 5 into the inner layer 2;

[0033] S2 production of the surface layer of the inner layer 2 and the outer layer 1: the inner layer 2 and the outer layer 1 are compounded by using a corrugated paperboard machine, and the corrugated paperboard is located on the side of the inner layer 2 and the outer layer 1 away from each other;

[0034] S3 assembly of the temperature guide assembly: the heat-conducting metal is punched by using a punch machine, so that the heat-conducting metal is formed into the sliding base 3 and the temperature guide 4, respectively, then the spring 6 is sleeved on the temperature guide 4, then the temperature guide 4 is installed in the sliding base 3, then the liquid phase change liquid is filled into the sliding base 3, and finally the sliding base 3 is sealed;

[0035] S4 installation of the temperature guide assembly: the temperature guide assembly is pasted to the recessed part of the inner layer 2 according to the requirements of the applicable product;

[0036] S5 compounding of the inner layer 2 and the outer layer 1: the inner layer 2 and the outer layer 1 are compounded by pasting the heat preservation layer of the inner layer 2 and the heat preservation layer of the outer layer 1 to each other, and the air-tight layer is pasted to each other, then the air-tight layer is adhered by using sealing glue, then the cavity between the inner layer 2 and the outer layer 1 is vacuumized by using a vacuum generator through the one-way valve 5, and finally the sealing glue is dripped into the one-way valve 5 after the vacuumization is completed.

[0037] The above process can realize industrial production of the product, and the type of phase change liquid can be adjusted according to the threshold value of temperature transfer change in different states required during production, so as to realize batch production.

[0038] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A method for preparing a cold chain cardboard box, characterized in that: Includes the following steps: S1 Inner and Outer Insulation Layer Production: Foaming material is injected into the mold to form the inner layer. Then, an airtight layer is laminated on the concave side of the inner layer and the bonding side of the outer layer and the inner layer. At the same time, a one-way valve is installed in the inner layer. S2 Inner and Outer Layer Surface Production: The inner and outer layers are laminated using a corrugated cardboard machine, with the corrugated cardboard located on the side of the inner and outer layers that are far apart from each other; Assembly of S3 temperature conduction component: The heat conduction metal is stamped using a stamping machine to form a sliding base and a temperature conduction component. Then, a spring is sleeved on the temperature conduction component, and the temperature conduction component is installed on the sliding base. Next, the liquid phase change liquid is filled into the sliding base, and then the sliding base is sealed. Installation of S4 thermal conductive component: Attach the thermal conductive component to the inner recess according to the requirements of the applicable product; The S5 inner and outer layers are composited by bonding the inner and outer insulation layers together and making the airtight layers bonded together. Then, the bonding joint of the airtight layers is sealed with sealant. A vacuum generator is then used to evacuate the cavity between the inner and outer layers through a one-way valve. After vacuuming, sealant is dripped into the one-way valve port to seal it.

2. A cold chain cardboard box, manufactured using the method for preparing a cold chain cardboard box as described in claim 1, characterized in that, The device includes a housing, which comprises an outer layer and an inner layer, with an insulation cavity formed between the outer and inner layers. A temperature-conducting component is disposed on the surface of the inner layer, and the temperature-conducting component can abut against the outer layer.

3. A cold chain cardboard box according to claim 2, characterized in that: The temperature-conducting component includes a sliding base and a temperature-conducting element that slides on the sliding base. The sliding base is fixedly connected to the inner layer, and the sliding base is filled with a phase change liquid.

4. A cold chain cardboard box according to claim 3, characterized in that: The sliding base is provided with a holding cavity for holding liquid phase change liquid.

5. A cold chain cardboard box according to claim 4, characterized in that: The sliding base is equipped with a spring that allows the temperature-conducting element to retract into the sliding base when the air pressure inside and outside the sliding base is in a balanced state.

6. A cold chain cardboard box according to claim 5, characterized in that: The inner layer is equipped with a one-way valve for allowing air to be discharged from the insulation cavity in one direction.

7. A cold chain cardboard box according to any one of claims 2-6, characterized in that: An airtight layer is laminated on the inner wall of the insulation cavity.

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