CN112520245A

CN112520245A - Insulation structure and insulation can for cold chain transportation

Info

Publication number: CN112520245A
Application number: CN201910877655.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuhan Yingfen Technology Co ltd
Current assignee: Wuhan Yingfen Technology Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2021-03-19

Abstract

The invention discloses a heat insulation structure and a heat insulation box for cold chain transportation. In the invention, the thermal barrier layer refers to a cavity with thermal barrier property, and the closed layer refers to a cavity with sealing property. The thermal barrier layer is located within the hermetic layer, or the hermetic layer is located within the thermal barrier layer. The thermal barrier layer is positioned in the closed layer, namely a cavity with thermal barrier property is positioned in a cavity with closed property; the closed layer is positioned in the heat barrier layer, which means that a cavity with the closing property is positioned in a cavity with the heat barrier property. Compared with an EPS foam insulation can, the price of the insulation can is reduced by at least 20%, the occupied storage space can be reduced by more than 90%, and white garbage can not be generated.

Description

Insulation structure and insulation can for cold chain transportation

Technical Field

The invention belongs to the field of cold chain transportation, and particularly relates to a heat insulation structure and a heat insulation box for cold chain transportation.

Background

The insulation boxes commonly used at present mainly comprise an EPS foam insulation box, an EPP foam insulation box and a hollow plate insulation box. The EPS foam insulation can is low in price, but the EPS foam insulation can on the market at present is uneven in quality and difficult to meet the stable insulation effect. In addition, EPS foam insulation can structural strength that quality is not up to standard is relatively poor, very easily broken. The EPP heat preservation box has good and stable heat preservation performance and is widely used as a take-away meal delivery heat preservation box; but the price is higher, the price is more than twice of that of the EPS foam insulation can, and because of the cost, the EPP insulation can is less applied as disposable package in the field of cold chain transportation of fresh food, meat products, seafood and other foods. In addition, both the EPS foam heat preservation box and the EPP foam heat preservation box have the problems of large occupied storage space, incapability of treating white garbage generated by packaging waste and the like. The hollow plate heat preservation box with the vacuum degree of a certain atmosphere overcomes the defect of poor structural strength of the EPS foam heat preservation box and the EPP foam heat preservation box, has good heat preservation performance, but is not expensive. Under the same heat preservation effect, the price of the hollow plate heat preservation box is more than 100 times that of the EPS foam heat preservation box, and the hollow plate heat preservation box is more used in the field of high-value medicine cold chain transportation.

Disclosure of Invention

The invention aims to provide a heat insulation structure for cold chain transportation and a heat insulation box, which are low in price, small in storage space and excellent in heat insulation performance.

The invention provides a heat insulation structure for cold chain transportation, which at least comprises a heat insulation layer and a closed layer.

In the invention, the thermal barrier layer refers to a cavity with thermal barrier property, and the closed layer refers to a cavity with sealing property. The thermal barrier layer is located within the hermetic layer, or the hermetic layer is located within the thermal barrier layer. The thermal barrier layer is positioned in the closed layer, namely a cavity with thermal barrier property is positioned in a cavity with closed property; the closed layer is positioned in the heat barrier layer, which means that a cavity with the closing property is positioned in a cavity with the heat barrier property.

The thermal barrier layer is used for improving the thermal barrier property so as to slow down the heat conduction; the good air tightness of the sealing layer can reduce the air convection heat transfer between the inside and the outside of the heat preservation structure. The heat insulation structure of the invention significantly improves the heat insulation performance by combining the heat blocking layer which can inhibit heat conduction and heat transfer and the closed layer which can inhibit convection and heat transfer.

Furthermore, the material of the heat blocking layer is a poor conductor material of heat.

The poor thermal conductor has a low thermal conductivity, thereby slowing down the conduction of heat. The poor conductor of heat in the present invention means a material having a thermal conductivity of not more than 0.12W/(mK) (W/m.degree). Further, a preferred embodiment of the thermal barrier layer is: the heat blocking layer is formed by limiting heat blocking gas in a closed cavity by an inner layered structure and an outer layered structure. The enclosed cavity that confines the thermal barrier gas may be a monolithic or partitioned cavity.

The thermal barrier gas is a gas having a thermal conductivity of not less than 0.2W/(m · K) (W/m · K), and examples thereof include air, nitrogen, carbon dioxide, and argon.

When the hollow cavity is formed integrally, the heat barrier layer is a hollow sandwich structure formed by an inner laminated structure and an outer laminated structure.

When the cavity is a partitioned cavity, the partitioned cavity may be a plurality of columnar cavities, a grid-shaped cavity, or fine closed pores distributed in the thermal barrier layer.

One specific embodiment of the plurality of columnar cavities is: and partitioning the cavity enclosed between the outer membranes at the two sides to obtain a plurality of mutually independent columnar cavities. Such as air-tight cavities formed by air films in air column bags and cavities formed by corrugated board interlayers.

The cross section of the grid holes in the grid-shaped cavity is circular or polygonal, and one specific embodiment is the cavity formed by the sandwich of the honeycomb plate structure.

One specific embodiment of the fine closed cells distributed in the thermal barrier layer are cavities in the cellular structure plies, such as cells in the foam board.

Furthermore, the heat barrier layer is composed of an upper cover, a lower bottom and integrally formed side walls; the integrally formed side wall means: a thermal barrier plate is folded into a side wall according to the pre-cut indentation lines or cutting grooves on the thermal barrier plate in sequence; the upper cover and the lower bottom are respectively fixed at the upper end and the lower end of the side wall.

Further, the heat barrier layer is composed of base paper, side walls, an upper cover and a lower bottom; the base paper is provided with the crease line that is used for the location to each lateral wall and cuts in advance, and on each lateral wall was according to the fixed base paper of location line, it was folding in order to press the crease line with the base paper, and upper cover and lower bottom difference fixed connection are in the upper and lower extreme of folding back lateral wall.

The side walls are fixed on the base paper, and the upper cover and the lower bottom are fixed on the upper end and the lower end of the side walls and can be adhered in a back adhesive mode.

For the convenience of use, the width of the base paper is higher than the height of the side walls, the upper end part and the lower end part of the base paper are respectively provided with a back glue area, and the upper cover and the lower bottom are respectively arranged at the upper end and the lower end of the folded side walls and are fixedly connected with the base paper in a back glue mode.

Further, the thermal barrier layer is composed of a plurality of thermal barrier layers, each of which is the same or different. The same means that the materials, structures and dimensions of the thermal barrier layers are the same, and the different means that at least one of the materials, structures and dimensions of the thermal barrier layers is different.

Further, the inner and/or outer wall of the heat barrier layer is compounded with a heat reflecting radiation layer.

Further, the heat barrier layer forms a closed cavity. The heat barrier layer forming the closed cavity has heat barrier property and air tightness, and has better heat insulation performance.

Further, the specific embodiment of the sealing layer can be a sealed plastic bag body or an aluminum foil bag body.

Specifically, the implementation manner of the sealing may be:

the product to be transported and the cold source are firstly put into the closed cavity, and then the closed cavity is sealed.

Further, the sealing layer is composed of a plurality of sealing layers, and each layer is the same or different. The same means that the materials, structures and dimensions of the sealing layers are the same, and the different means that at least one of the materials, structures and dimensions of the sealing layers are different.

Further, the inner wall and/or the outer wall of the closed layer is/are compounded with a heat barrier layer.

Furthermore, a heat reflecting radiation layer is compounded on the inner wall and/or the outer wall of the closed layer.

Further, a porous structure heat-insulating material layer is compounded on the inner and/or outer wall of the closed layer, for example, an EPE sponge layer, a PU sponge layer, an EPE material compounded with an aluminum foil layer, and a PU sponge layer compounded with the aluminum foil layer.

According to the actual situation, the air flow speed can be adjusted by opening the vent holes on the closed layer, so that the required heat preservation effect can be obtained.

The heat radiation reflecting layer can be an aluminum foil or a heat radiation reflecting coating, and is used for reducing heat radiation heat transfer and convection heat transfer so as to further enhance the heat preservation effect.

Furthermore, one or more inserting plates are inserted into a cavity formed by the thermal barrier layer to divide the cavity into at least two independent bins. The heat-insulating effect is adjusted by adjusting the air flow speed inside and outside the heat-insulating layer by arranging a channel for air flow on the inserting plate. The channel can be an air hole arranged on the insert plate or can be obtained by arranging the upper end and/or the lower end of the insert plate into a sawtooth structure.

The insulation can for cold chain transportation provided by the invention comprises an outer packaging layer, wherein the insulation structure is arranged in the outer packaging layer.

Further, the inner and/or outer wall of the outer packaging layer is/are compounded with a heat reflection and radiation layer.

In the invention, the outer packaging layer can be a corrugated paperboard outer box, a honeycomb paperboard outer box, a plastic outer box, a wood outer box and the like, and mainly plays a role in supporting and serving as a printing carrier.

Compared with the prior art, the invention has the following characteristics and beneficial effects:

(1) the raw materials have wide sources and low price, and the price is more advantageous than that of the EPS foam insulation box, the EPP foam insulation box and the hollow plate insulation box which are commonly used at present under the same insulation effect. Compared with EPS foam insulation can, the price of the insulation can is reduced by at least 20%.

(2) The raw materials are not easy to damage like low-density EPS foam, and no white garbage is generated, and all generated packaging wastes are environment-friendly and easy to degrade and convenient to recycle.

(3) The occupied storage space is small, and raw materials can be stored in a sheet shape when not used, so that the storage space is greatly reduced; under the same heat preservation effect, compared with the EPP foam heat preservation box, the EPS foam heat preservation box and the hollow plate heat preservation box which are commonly used at present, the occupied space for storage can be reduced by more than 90 percent.

(4) The outer container can adopt the carton, consequently has good printing performance, can satisfy diversified by the propaganda file requirement of packing material.

(5) The design is a separate structure, and freezing and refrigeration can be realized simultaneously, so that the cost is further reduced.

Drawings

FIG. 1 is a sectional view of an insulation structure according to example 1;

FIG. 2 is a sectional view of another insulation structure according to embodiment 1;

FIG. 3 is a schematic view of a preferred embodiment of an air layer structure in example 1, wherein FIG. (a) is a side sectional view and FIG. (b) is a top view;

FIG. 4 is a sectional view of the incubator in embodiment 2;

FIG. 5 is an exploded view of the heat-insulating case according to embodiment 3;

FIG. 6 is a sectional view of the incubator in embodiment 3;

FIG. 7 is a comparative test of the refrigerating and keeping effect of example 3;

FIG. 8 is a comparative test of the effect of freezing and heat-retaining in example 3;

FIG. 9 is a schematic view showing the structure of a honeycomb panel case according to example 4 a;

FIG. 10 is an expanded view of the side wall of the honeycomb panel of example 4 b;

FIG. 11 is a top view of the side walls of the box folded from the honeycomb panels of FIG. 10;

FIG. 12 is a side view of another honeycomb panel side wall of example 4 b;

FIG. 13 is a top view of the side walls of the case folded from the honeycomb panels of FIG. 12;

FIG. 14 is a schematic view showing the development of a raw paper in example 4 c;

FIG. 15 is a schematic view of the original paper backing area in example 4 c;

FIG. 16 is an exploded view of the heat-insulating case according to example 5;

FIGS. 17 to 18 are comparative tests of the freezing and heat-insulating effects of the heat-insulating cases of examples 6 to 10

FIGS. 19 to 21 are schematic views showing the structure of the incubator in example 11.

In the figure, 1-a thermal barrier layer, 1 a-a first U-shaped thermal barrier plate structure, 1 b-a second U-shaped thermal barrier plate structure, 2-a sealed cavity, 3 a-a first outer membrane, 3 b-a second outer membrane, 4-an air cavity, 5-a heat sealing line, 6-an outer box, 6 a-a box, 6 b-a box cover, 7-a honeycomb plate box, 7 a-a honeycomb plate, 7 b-a honeycomb plate upper cover, 7 c-a honeycomb plate side wall, 7 d-a creasing line, 7 e-a cutting groove, 7 f-base paper, 7 g-a positioning line, 7 h-a first back glue area, 7 i-a second back glue area, 7 j-a third back glue area, 7 k-a fourth back glue area, 8-an inserting plate, 8 a-an inserting groove and 8 b-a channel.

Detailed Description

The technical solutions and advantageous effects of the present invention will be described in detail below with reference to examples, but those skilled in the art will understand that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.

Example 1

Several embodiments of insulation structures for cold chain transportation will be provided in this embodiment.

Referring to fig. 1-2, shown is a cross-sectional view of the insulation structure of this embodiment, including a thermal barrier layer 1 and a sealed cavity 2 located inside the thermal barrier layer 1, the sealed cavity 2 is a sealed cavity corresponding to the sealed layer.

The inner wall of the sealed cavity 2 and the thermal barrier layer 1 can be in contact with each other in a fitting manner, partially in contact with each other or not in contact with each other, fig. 1 is a structural schematic diagram of the sealed cavity 2 and the thermal barrier layer 1 in the fitting manner, fig. 2 is a structural schematic diagram of the sealed cavity 2 and the thermal barrier layer 1 in the partial contact with each other, and the sealed cavity 2 and the thermal barrier layer 1 are preferably in contact with each other or partially in contact with each other in consideration of the stability and the heat preservation effect of the heat. The heat insulation structure of the invention obviously improves the heat insulation performance by combining the heat blocking layer which can slow down heat conduction and heat transfer and the sealed cavity which can inhibit convection heat transfer.

Possible embodiments of the thermal barrier layer 1 and the sealed cavity 2 will be described separately below.

(1) Thermal barrier layer

The thermal barrier layer in this embodiment is a thermal barrier layer made of a poor thermal conductor. The poor thermal conductor has a low thermal conductivity, which slows down the heat conduction. The poor thermal conductor may be air, plastic, wood, bamboo board, etc., but is not limited to these. When a gaseous poor thermal conductor is used, the layered structure can be used to limit gaseous substances without definite shapes, and a thermal barrier layer with an air layer structure is obtained. The air layer structure heat barrier layer can inhibit convection heat transfer while slowing down heat conduction heat transfer; when a solid poor thermal conductor is used, the poor thermal conductor can be directly formed into a layered thermal barrier layer.

Specifically, the thermal barrier layer can be a thermal barrier layer of a thermal insulation material, a thermal barrier layer of a wood board, a thermal barrier layer of a bamboo board, or a thermal barrier layer of a plastic. However, from the perspective of cost and thermal insulation effect, the thermal barrier layer with an air layer structure is selected in the embodiment, which has a better thermal insulation effect, a higher cost performance, and a simplest structure, and the air layer structure can improve the thermal resistance of the thermal barrier layer to the maximum extent, and since the air is limited in the layered characteristic structure, the convection heat transfer can be reduced. The air-layer structure thermal barrier layer may be an air-layer structure, a honeycomb paperboard layer, a corrugated paperboard layer, or a foam paperboard layer.

The air layer structure is the prior art, can adopt two-layer adventitia, seal the air bed between two-layer adventitia, and locate the inflation valve constitution on the adventitia, as preferredly, can divide into a plurality of independent air cavities each other the air bed, like this, when the adventitia has the damage, this air bed structure still can use. The partition of the air layer can be realized by adopting a heat sealing line, namely, the heat sealing line is formed on the two outer films by hot stamping so that the two outer films are bonded at the heat sealing line. Referring to fig. 3, a specific air layer structure is shown, wherein, the drawings (a) and (b) are only partially shown, but not showing the whole structure of the air layer structure, and the drawing (a) is a side sectional view thereof for showing the layered structure thereof; the top view of the figure (b) is used to show the distribution of the heat-sealing lines. The air layer structure adopts the transverse and longitudinal heat sealing lines 5 at the same time, so that the first outer film 3a and the second outer film 3b are bonded at the heat sealing lines 5, the air layer is partitioned, and a plurality of independent air cavities 4 are obtained. The air layer structure can directly select various air bags on the market according to the requirement.

In order to further enhance the heat preservation performance, one preferable scheme of the heat barrier layer is as follows: and a heat-reflecting radiation layer, such as an aluminum foil or a heat-reflecting radiation coating, is compounded on the outer surface of the heat barrier layer.

In specific implementation, when the requirement on the thermal insulation performance is higher, a plurality of thermal barrier layers can be arranged, and each thermal barrier layer in the plurality of thermal barrier layers can be the same or different, wherein the same means that the materials, the structures and the sizes of the thermal barrier layers are the same, and the different means that at least one of the materials, the structures and the sizes is different. For example, the multiple thermal barrier layers may be of a multiple air layer structure, a single air layer structure plus a single honeycomb paperboard layer, or multiple honeycomb paperboard layers, but the thicknesses of the honeycomb paperboard layers may be different.

(2) Sealed cavity

In this embodiment, the sealed cavity is used for placing the product to be transported and the cold source, and the product to be transported and the cold source are sealed after being placed in the sealed cavity. In this embodiment, the sealed cavity is a sealed bag body, and the material of the sealed bag body should have good air impermeability, for example, the sealed bag body may be a plastic bag body, an aluminum foil bag body, a paper bag body, a film-coated paper bag body, and the like, and the plastic bag body may be a hard plastic bag or a soft plastic bag. The shape of the sealed cavity is not limited, and the shape is preferably a rectangular parallelepiped shape. Because the aluminium foil is anti-heat radiation material, adopt the aluminium foil bag body can have simultaneously and reduce heat radiation heat transfer and reduce convection heat transfer, thermal insulation performance is more excellent. And after the product to be transported and the cold source are put into the sealing bag body, sealing the bag opening. The sealing mode of the bag opening is not limited as long as a sealing cavity can be formed in the bag. Specifically, a seal can be arranged at the bag opening, and sealing is performed through the seal so as to realize sealing; or the bag opening can be folded and sealed by rubberized fabric.

In order to further enhance the heat preservation performance, one preferable scheme of the sealed cavity is as follows: the heat insulating material layer is compounded on the inner side of the sealed cavity, so that the sealed cavity can simultaneously reduce convection and improve heat resistance, and the heat insulating performance is better. The thermal insulation material layer is preferably a porous structure thermal insulation material layer, such as an EPE sponge layer or a PU sponge layer.

In order to further enhance the heat preservation performance, another preferred scheme of the sealed cavity is as follows: when the sealed cavity is a plastic bag body, a heat-reflecting radiation layer, such as an aluminum foil or a heat-reflecting radiation coating, can be compounded on the outer surface of the sealed cavity.

During specific implementation, when the requirement on the heat preservation performance is higher, the heat-resistant radiation layer compounded on the outer surface of the heat-blocking layer and/or the sealed cavity can be selected according to the actual heat preservation requirement.

Example 2

Referring to fig. 4, a cross-sectional view of the incubator of this embodiment is shown, which has a three-layer structure, and comprises an outer packaging layer, a thermal barrier layer 1, and a sealed cavity 2 in sequence from outside to inside. In this embodiment, the outer packaging layer is an outer box 6, which mainly plays a role in packaging and supporting, the heat blocking layer 1 is attached to the inner wall of the outer box 6, and the heat blocking layer 1 and the sealed cavity 2 form the heat insulation structure described in embodiment 1. The thermal barrier layer 1 is disposed between the outer box 6 and the sealed cavity 2, and can prolong the thermal conduction path between the outer box 6 and the sealed cavity 2, thereby reducing the conduction of external environment heat to the sealed cavity 2.

In order to further enhance the heat preservation effect, the outer box can be made of materials and/or structures which can increase the heat resistance. Because of cost and environmental protection consideration, the carton is adopted to the outer case in this embodiment, because the good printing performance of carton, still can satisfy diversified propaganda file demand. The preferred scheme adopts corrugated board outer container or honeycomb cardboard outer container. The corrugated structure is generally formed by at least one core paper interlayer between an outer layer paperboard and an outer layer paperboard, and a closed air layer is formed in the core paper interlayer, so that the corrugated structure has high heat resistance and convection slowing performance. Specifically, the corrugated structure can be selected from various corrugated structures such as A, C, B, E, and even a special corrugated structure.

In order to further enhance the heat preservation performance, one preferable scheme of the outer box is as follows: the inner surface and the outer surface of the outer box are compounded with a heat-reflecting radiation layer, such as an aluminum foil or a heat-reflecting radiation coating, so that the heat radiation and the heat transfer of the external environment can be reduced.

The specific embodiments of the thermal barrier layer and the sealed cavity are described in example 1 and will not be described herein.

In the specific implementation, the preferred schemes listed in example 1 and example 2 can be selected and combined according to the actual heat preservation requirement.

Example 3

This embodiment uses a columnar air layer as a heat barrier layer. Referring to fig. 5 to 6, there are shown schematic structural diagrams of the incubator, which includes three layers, an outer layer, a middle layer and an inner layer, in this embodiment, the drawings are drawn with a columnar air layer as the middle layer, but the middle layer is not limited to the columnar air layer. The outer layer is an outer box 6, which is a cubic box structure and is composed of a box body 6a and a box cover 6b which are integrally formed. The middle layer is a thermal barrier layer 1, and the thermal barrier layer 1 is a closed box body structure matched with the outer box. The inner layer is a sealed cavity 2 which is arranged in the closed box body structure formed by the heat barrier layer 1, and the sealed cavity 2 is not required to be completely matched with the closed box body structure formed by the heat barrier layer 1. If better thermal insulation is desired, a multi-layer thermal barrier layer 1 may be provided, as shown in figure 6.

Considering that the sealed cavity 2 needs to be taken and placed in the using process, the closed box body structure formed by the heat blocking layer 1 is formed by assembling in a detachable mode. For convenience of description, the panel constituting the thermal barrier layer 1 will be hereinafter referred to as a thermal barrier sheet.

Several assembling modes will be exemplified below, and the illustrated assembling modes are only used as specific examples and do not limit the scope of protection. For example, six thermal barrier plates can be assembled into a closed cubic structure, and the sealed cavity 2 can be taken and placed by taking out one thermal barrier plate; or an integrally formed cubic structure of six-sided thermal barrier plates is adopted; or an integrally formed uncovered thermal barrier plate cube structure and a matched thermal barrier plate cover plate are adopted, the uncovered thermal barrier plate cube structure and the thermal barrier plate cover plate are assembled into a closed cube structure, and the sealed cavity 2 can be taken and placed after the thermal barrier plate cover plate is taken down; or two integrally formed U-shaped heat insulation plate structures are spliced to form a closed cubic structure, as shown in fig. 5 (b); or the integrally formed two coverless heat insulation plate cube structures are adopted, and the openings of the two coverless heat insulation plate cube structures are butted and spliced into a closed cube structure. In order to ensure the structural stability and the air tightness of the assembled closed cubic cavity, all splicing parts are sealed by using adhesive tapes.

The use of the incubator of this embodiment will be provided below with reference to fig. 5 (b).

Firstly, putting a product to be transported and a cold source into a sealed cavity 2, and sealing the sealed cavity 2;

then, the sealed cavity 2 is arranged in the first U-shaped thermal insulation plate structure 1a, and the second U-shaped thermal insulation plate structure 1b and the first U-shaped thermal insulation plate structure 1a are spliced to form a closed cubic structure, namely the sealed cavity 2 is packaged in the closed cubic structure;

then, the closed cubic structure is placed in the outer box 6;

finally, cover 6b is closed and cover 6b is secured and sealed with adhesive tape.

The insulation box and the EPS foam insulation box of the embodiment are respectively subjected to a cold storage and freezing insulation effect test, the test results are respectively shown in figures 7-8, the X axis in the figures represents the sampling frequency, and the sampling frequency is 3 minutes; the Y-axis is the temperature axis, in units: and C. As can be seen from the figure, the refrigeration and heat preservation performance of the heat preservation box of the embodiment is obviously superior to that of an EPS foam heat preservation box; in the process of the freezing test, the freezing and heat-insulating performance of the incubator of the embodiment is obviously better within about 14 hours.

Example 4

The present embodiment uses a honeycomb plate as a heat blocking layer, and provides three specific structures of a honeycomb plate case body formed of a honeycomb plate.

Example 4a

In this embodiment, the cellular board box 7 is formed by enclosing 6 cellular boards 7a, specifically referring to fig. 9, a product to be transported or a sealed bag is first placed in the cellular board box 7, and the cellular board upper cover 7b is fixedly connected to the upper end of the box, specifically, a sticking manner can be adopted for fixing connection.

Example 4b

The honeycomb panel box body 7 in this embodiment is composed of a honeycomb panel upper cover, a honeycomb panel lower base, and honeycomb panel side walls 7c formed integrally. Fig. 10 is an expanded view of the side wall 7c of the honeycomb panel, in which the side wall 7c of the honeycomb panel is pre-cut with a score line 7d, and the expanded side wall 7c of the honeycomb panel is folded in sequence by the score line 7d to form a side wall of the box body, and fig. 11 is a plan view of the folded side wall of the box body.

In the present embodiment, the score line 7d is further modified for aesthetic purposes, and the score line 7d is replaced by an inverted triangular cut 7e, specifically referring to fig. 12, the unfolded cellular board sidewall 7c shown in fig. 12 is folded in sequence according to the cut 7e to form a box sidewall, and fig. 13 is a top view of the folded box sidewall.

After the side walls of the box body are obtained, the upper cover and the lower bottom of the honeycomb plate are respectively fixed at the upper end and the lower end of the side walls of the box body.

Example 4c

The cellular board box of this embodiment is formed by body paper and cellular board, and the cellular board that this embodiment adopted includes 4 cellular board lateral walls, 1 cellular board upper cover, and 1 cellular board lower floor. Referring to fig. 14, the base paper 7f is provided with a positioning line 7g for positioning the side wall of the honeycomb panel and a pre-cut crease line 7d, the positioning line 7g limits the position of the side wall of the 4 honeycomb panels, and four areas marked as (i), (ii), (iii) and (iv) in the figure are shown.

For convenience of use, a plurality of adhesive backing areas are arranged on the base paper 7f, specifically, see the hatched areas in fig. 15, in this embodiment, a first adhesive backing area 7h, a second adhesive backing area 7i, and a third adhesive backing area 7j are respectively arranged at the upper end, the lower end, and the one-side end of the base paper 7f, and 4 fourth adhesive backing areas 7k are respectively arranged at the edges of the four areas of (i), (ii), (iii), and (iv). The first back glue area 7h is used for pasting and connecting the upper cover of the honeycomb plate with the base paper 7f, the second back glue area 7i is used for pasting and connecting the lower bottom of the honeycomb plate with the base paper 7f, the third back glue area 7j is used for pasting and connecting two ends of the base paper 7f so as to enclose the side wall of the honeycomb plate into a whole, and the 4 fourth back glue areas 7k are respectively used for pasting the side walls of the 4 honeycomb plates with the areas of the base paper 7f, namely the areas I, II, III and IV.

When the honeycomb plate box is used, firstly, 4 side walls of the honeycomb plate are respectively stuck and fixed to four areas (i.e., the area I, the area III and the area IV) on the base paper 7f through 4 fourth back glue areas 7k, the base paper 7f is sequentially folded into the side wall of the box body by pressing the crease line 7d, and the upper cover of the honeycomb plate and the lower bottom of the honeycomb plate are respectively stuck to the upper end and the lower end of the side wall of the box body through the first back glue area 7h and the second back glue area 7i, so that the honeycomb plate box body in the embodiment is obtained.

Example 4a is relatively less costly, but examples 4b and 4c are more convenient to use. In examples 4a to 4c, the honeycomb board was made of a honeycomb cardboard.

The honeycomb panel box structure in the following embodiments 5 to 10 can adopt any one of the structures of embodiments 4a to 4 c.

Example 5

The structure of the incubator of this embodiment is a three-layer structure, see fig. 16, which sequentially comprises from outside to inside: outer box 6, honeycomb panel box 7, seal chamber 2. In this embodiment, the outer box 6 is a paper box, the honeycomb board box body 7 is made of a honeycomb paperboard, and the sealed cavity 2 is made of an EPE material with an aluminum foil layer compounded on the outer layer. When the device is used, a product to be transported is placed into the sealed cavity 2 and sealed, the sealed cavity 2 is placed into the honeycomb plate box body 7 and covered with the upper cover 7b, and the honeycomb plate box body 7 is placed into the outer box 6 for packaging.

Example 6

The insulation can of the embodiment comprises a two-layer structure, namely a honeycomb plate box body 7 and a sealed cavity 2 from outside to inside in sequence. The honeycomb board box body 7 is composed of a honeycomb paperboard, and the sealed cavity 2 is made of EPE materials with aluminum foil layers compounded on the outer layers.

Example 7

The insulation can of the embodiment comprises a two-layer structure, namely a sealed cavity 2 and a honeycomb plate box body 7 from outside to inside in sequence. The honeycomb board box body 7 is composed of a honeycomb paperboard, and the sealed cavity 2 is made of EPE materials with aluminum foil layers compounded on the outer layers.

Example 8

The incubator of this embodiment is slightly modified from that of embodiment 5, that is, the outer case 6 is formed of a paper bag, and the other structure is the same as that of embodiment 4.

Example 9

This embodiment insulation can includes three layer construction, does from outside-in proper order: outer container 6, seal chamber 2, honeycomb panel box 7, outer container 6 is the carton, and honeycomb panel box 7 is by the honeycomb cardboard, and seal chamber 2 is the EPE material that outer complex has the aluminium foil layer.

Example 10

When the insulation can structure of embodiment 9 is adopted, when the preservation time of the cold chain transportation product in the honeycomb board box body exceeds 24 hours, condensed water can be generated on the surface of the box body, if the honeycomb board is adopted, the heat conductivity coefficient can be increased rapidly after the honeycomb board absorbs certain moisture, the thermal resistance is reduced, and the thermal resistance effect is weakened. In order to avoid this, in this embodiment, on the basis of the structure of the thermal insulation box in embodiment 9, the inner surface of the honeycomb paperboard is subjected to a wet-proof treatment, and a waterproof film is laminated to prevent the honeycomb paperboard from absorbing moisture. The insulation can structure of the composite waterproof film is particularly suitable for application scenes with the transportation time longer than 24 hours. Even in extreme cases, for example, meet with the product and unfreeze, the thawing must produce moisture, because this embodiment carries out the laminating technology to the honeycomb panel box inner wall, can prevent that moisture from being absorbed by honeycomb cardboard to can prolong the heat preservation time.

Test experiments

The insulation boxes and the EPS foam insulation boxes in the embodiments 6 to 10 are respectively subjected to cold storage and freezing insulation effect test tests, the test results are respectively shown in FIGS. 17 to 18, in the drawings, the X axis represents the sampling frequency, and the sampling frequency is 3 minutes, so that the X axis can be equivalent to time; the Y-axis is the temperature axis, in units: and C.

Referring to FIG. 17, there is shown a comparative graph of the freezing and incubation effects, including the comparative graphs for the products of examples 6-8 and EPS foam incubators. Referring to FIG. 18, there is shown a comparative graph of the freezing and insulation effect, including the comparative graphs for examples 9-10 and EPS foam insulation boxes. As can be seen from the figure, the refrigeration and heat preservation performance of the invention is obviously superior to that of an EPS foam heat preservation box, the heat preservation time is longer, and the heat preservation effect is better.

Example 11

In order to further reduce the cost, the present embodiment provides a box structure that can adopt the same box to simultaneously realize cold storage and freezing. Referring to fig. 19 to 21, the cellular board box 7 is divided into two compartments, that is, one or more inserting plates 8 are inserted into the cellular board box 7, the inserting plate 8 may be a cellular board or other material, and the inserting plate 8 is mainly used to divide the cellular board box 7 into at least two compartments. The side wall of the honeycomb panel box 7 may be provided with a slot 8a matching with the insert plate 8 in advance to facilitate the insertion of the insert plate 8. In this embodiment, two insertion plates 8 are adopted to divide the honeycomb board box body 7 into three bins. In the present embodiment, the insertion plate 8 is provided with a passage 8b through which cold air can pass, specifically, the passage 8b is obtained by a saw-tooth structure provided at the upper end and/or the lower end of the insertion plate 8, but it is also possible to provide a through hole in the insertion plate 8 as a passage. It should be noted that the channel 8b is not essential to the binning structure.

For the obtained sub-bins, for two adjacent bins, one bin is used for placing the refrigerated products, the other bin is used for placing the refrigerated products and the cold source, and the cold air of the cold source penetrates into the refrigerated product bin from the channel 8b, so that the freshness of the refrigerated products can be realized. The insertion position of the passage 8b is determined according to the volumes of the frozen and refrigerated products. When in use, the product can be placed in the sealed bag body, and the sealed bag body is placed in the sub-bin; or directly putting the product into the sub-bin, and putting the honeycomb plate box body 7 in which the product is put into the sealing bag body.

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a heat preservation structure is used in cold chain transportation which characterized by:

the hierarchical structure of the heat preservation structure at least comprises a heat blocking layer and a sealing layer.

2. The insulation structure for cold chain transportation according to claim 1, wherein:

the material of the heat blocking layer is a poor conductor of heat.

3. The insulation structure for cold chain transportation according to claim 2, wherein:

the heat blocking layer is formed by limiting heat blocking gas in a closed cavity through an inner layered structure and an outer layered structure.

4. The insulation structure for cold chain transportation according to claim 3, wherein:

the enclosed cavity that confines the thermal barrier gas is a monolithic or partitioned cavity.

5. The insulation structure for cold chain transportation according to claim 4, wherein:

the partitioned cavity is a plurality of columnar cavities, latticed cavities or fine closed holes distributed in the heat blocking layer.

6. The insulation structure for cold chain transportation according to claim 1, wherein:

the heat blocking layer is composed of an upper cover, a lower bottom and integrally formed side walls; the integrally formed side wall means: a thermal barrier plate is folded into a side wall according to the pre-cut indentation lines or cutting grooves on the thermal barrier plate in sequence; the upper cover and the lower bottom are respectively fixed at the upper end and the lower end of the side wall.

7. The insulation structure for cold chain transportation according to claim 1, wherein:

the heat blocking layer is composed of base paper, side walls, an upper cover and a lower bottom; the base paper is provided with the crease line that is used for the location to each lateral wall and cuts in advance, and each lateral wall is fixed in on the base paper according to the location line, presses the crease line with the base paper and folds in order, and upper cover and lower bottom are fixed connection respectively in the upper and lower extreme of folding back lateral wall.

8. The insulation structure for cold chain transportation according to claim 7, wherein:

the width of the base paper is higher than the height of the side walls, the upper end part and the lower end part of the base paper are respectively provided with a back glue area, and the upper cover and the lower bottom are respectively arranged at the upper end and the lower end of the folded side walls and are fixedly connected with the base paper in a back glue mode.

9. The heat insulating structure for cold chain transportation according to any one of claims 1 to 8, wherein:

the thermal barrier layer is composed of a plurality of thermal barrier layers, and each layer is the same or different.

10. The heat insulating structure for cold chain transportation according to any one of claims 1 to 8, wherein:

the inner and/or outer wall of the heat barrier layer is compounded with a heat reflecting radiation layer.

11. The heat insulating structure for cold chain transportation according to any one of claims 1 to 8, wherein:

the heat barrier layer forms a closed cavity.

12. The insulation structure for cold chain transportation according to claim 1, wherein:

the sealing layer is composed of a plurality of sealing layers, and each layer is the same or different.

13. The insulation structure for cold chain transportation according to claim 1, wherein:

and the inner wall and/or the outer wall of the closed layer is/are compounded with a heat barrier layer.

14. The insulation structure for cold chain transportation according to claim 1, wherein:

and the inner wall and/or the outer wall of the closed layer is/are compounded with a heat reflection and radiation layer.

15. The insulation structure for cold chain transportation according to claim 1, wherein:

and the inner wall and/or the outer wall of the closed layer is/are compounded with a porous structure heat-insulating material layer.

16. The insulation structure for cold chain transportation according to claim 1, wherein:

the closed layer is provided with a vent hole.

17. The insulation structure for cold chain transportation according to claim 1, wherein:

one or more inserting plates are inserted into a cavity formed by the thermal barrier layer to divide the cavity into at least two independent bins.

18. The insulation structure for cold chain transportation according to claim 1, wherein:

and a channel for airflow to flow is arranged on the inserting plate.

19. The insulation structure for cold chain transportation according to claim 18, wherein:

the channel is an air hole formed in the inserting plate, or is obtained by arranging the upper end and/or the lower end of the inserting plate into a sawtooth structure.

20. The utility model provides an insulation can is used in cold chain transportation, includes the extranal packaging layer, characterized by:

the outer packaging layer is internally provided with the heat insulation structure of any one of claims 1 to 19.

21. The incubator of claim 20, wherein:

and the inner and/or outer wall of the outer packaging layer is/are compounded with a heat reflection and radiation layer.