CN215827428U - Environment-friendly heat preservation carton - Google Patents
Environment-friendly heat preservation carton Download PDFInfo
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- CN215827428U CN215827428U CN202120965338.6U CN202120965338U CN215827428U CN 215827428 U CN215827428 U CN 215827428U CN 202120965338 U CN202120965338 U CN 202120965338U CN 215827428 U CN215827428 U CN 215827428U
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Abstract
The utility model discloses an environment-friendly heat-insulating carton, which comprises a surface paper layer, a corrugated paper layer and a bottom paper layer from outside to inside, wherein the surface paper layer comprises a carton board paper layer, a press polish kraft paper layer, a non-woven fabric layer, an aluminum film layer, a pet film layer or an aluminum platinum layer, the carton board paper layer and a polymer material layer connected among the layers of the carton board paper layer, the corrugated paper layer comprises 2 corrugated paper body layers and a polymer material layer connected with the 2 corrugated paper body layers, and the bottom paper layer comprises a polymer foaming material layer, a carton board paper layer and a polymer material layer connected with the foaming material layer and the carton board paper layer; the utility model provides an environment-friendly heat-preservation carton which is environment-friendly, waterproof, good in heat-preservation performance and capable of greatly reducing transportation and production costs.
Description
Technical Field
The utility model relates to the technical field of cartons, in particular to an environment-friendly heat-preservation carton.
Background
Most of the heat-insulating packaging boxes conventionally used in the current market are EPS foamed foam boxes, and then paper boxes are sleeved outside the heat-insulating packaging boxes. Mainly because of the relatively poor thermal conductivity of the paper of the common boxboard, and the poor barrier property of the paper, especially in the waterproof and moisture-proof performance. The most critical premise of cold-chain logistics is to have certain waterproof and moistureproof capabilities. Once the ordinary carton is affected with damp, the carton intensity decay is more than 50%, all can receive corresponding influence in the performance. Therefore, the conventional heat-insulating cold-chain logistics carton is internally provided with the foam box and depends on the heat-insulating and waterproof performances of the foam box.
Chinese patent publication No. CN112622139A, a high-strength composite EPS foam thermal insulation box, discloses a high-strength composite EPS foam thermal insulation box. The insulation can is obtained by splicing EPS composite boards, and the EPS composite boards are prepared by a two-step method. (S1) a layer of tensile fiber net is flatly laid at the bottom of a forming die, EPS foaming raw materials are filled into the die, and heating foaming forming is carried out to obtain a semi-finished product of the plate. (S2) placing the semi-finished plate in another mould, wherein the side of the semi-finished plate with the tensile fiber net faces downwards, and paving a layer of tensile fiber net on the semi-finished plate; and charging EPS foaming raw materials into the mold for molding to obtain the product. According to the high-strength composite EPS foam insulation box provided by the utility model, the plate is made by foaming twice, the outer layer foaming material has high density, high hardness and high strength, and the tensile fiber net integrally coated on the two sides has good shock resistance; the inner layer foaming material has low density, moderate hardness and strength and excellent buffering and energy absorbing functions. But the incubator provided by the utility model still has the problem of environmental pollution.
With the rapid development of domestic network sales, the requirements on heat preservation packaging are higher and higher, and the market is also larger and larger, including the supply chain of cold-chain logistics raised in the aspects of food and medicine. The traditional EPS foam box is made of polystyrene, belongs to the field of environmental pollution caused by white pollution, is not decomposed or degraded, is high in recycling cost, causes large pollution in the whole manufacturing process, and is a flammable and explosive raw material. But because of the good heat preservation performance, no good substitute can be found in the market all the time.
In conclusion, the prior art still lacks an environment-friendly insulation carton.
SUMMERY OF THE UTILITY MODEL
The utility model provides an environment-friendly heat-preservation carton and a method thereof, wherein the environment-friendly heat-preservation carton is environment-friendly, waterproof and good in heat-preservation performance, and the transportation and production cost is greatly reduced.
To achieve the purpose, the utility model provides the following technical scheme:
the utility model provides an environment-friendly heat preservation carton, which comprises a surface paper layer, a corrugated paper layer and a bottom paper layer from outside to inside,
the surface paper layer comprises a boxboard paper layer, a press polish kraft layer, a non-woven fabric layer, an aluminum film layer, a pet film layer or an aluminum platinum layer, a boxboard paper layer and a high polymer material layer connected among the layers,
the corrugated paper layer comprises 2 corrugated paper body layers and a polymer material layer connected with the 2 corrugated paper body layers,
the bottom paper layer is a polymer foam material layer, a box board paper layer and a polymer material layer for connecting the foam material layer and the box board paper layer.
Preferably, the polymer material layer adopts the following materials: low density polyethylene, high density polyethylene, polypropylene or ethylene copolymers.
Preferably, the ethylene copolymer includes ethylene octene copolymer poe, ethylene vinyl acetate copolymer eva, ethylene maleic anhydride copolymer ema or ethylene acrylic acid copolymer eaa.
Preferably, the high molecular foaming material comprises EPE, IXPE, XPE, IXPP, XPP, XPE, XPP or MPET with aluminum coating.
The utility model also provides an environment-friendly heat-preservation carton which comprises a surface paper layer, a corrugated paper layer and a bottom paper layer from outside to inside, wherein the surface paper layer is formed by compounding the carton board paper, the press polish kraft paper, the non-woven fabric, the aluminum film, the pet film and/or the aluminum platinum with the carton board paper in a high polymer material hot melting mode, the corrugated paper layer is formed by compounding 2 pieces of corrugated paper bodies in a high polymer material hot melting mode, and the bottom paper layer is formed by compounding and bonding the high polymer foaming material and the carton board paper in a high polymer material hot melting mode.
The cardboard paper of the utility model refers to the cardboard paper of the conventional cardboard box in the prior art, and comprises recycled paper, wood pulp paper, A-grade paper, C-grade paper, white coated paper, kraft paper and kraft paper.
The corrugated paper body of the utility model refers to the corrugated paper of the prior art conventional paper box, and comprises wood pulp paper and recycled paper.
Preferably, the high molecular material comprises one or more of low density polyethylene, high density polyethylene, polypropylene and ethylene copolymer.
Preferably, the ethylene copolymer comprises one or more of ethylene octene copolymer poe, ethylene vinyl acetate copolymer eva, ethylene maleic anhydride copolymer ema and ethylene acrylic acid copolymer eaa in combination.
The polymer material is a thermoplastic polymer material, a film is extruded by a single-screw extruder, molecular chains can move freely, and polar functional groups are formed by air oxidation, so that the high-viscosity high-performance epoxy resin has high adhesion performance. And the surface of the facial tissue body is of a fiber porous structure, so that molten resin can easily enter the gaps. The formed surface paper layer not only has the waterproof and moistureproof performance, but also can greatly increase the strength of the surface paper body.
The utility model does not need to coat glue on the corrugated paper when producing the corrugated paper layer, and only needs to melt the resin under certain temperature and pressure. The paper can be compounded with the bottom paper layer and the surface paper layer under the action of pressure to prepare the waterproof paperboard. The corrugated paper compounded in the above mode has the advantages of being waterproof and moistureproof, enhancing the strength of the corrugated paper body and prolonging the service life of the corrugated paper layer.
Preferably, the high molecular foaming material comprises one or more of EPE, IXPE, XPE, IXPP, XPP and MPET; further preferably, polyethylene IXPE, polyethylene XPE, polyethylene IXPP, polyethylene XPP, polypropylene IXPE, polypropylene XPE, polypropylene IXPP, polypropylene XPP are all electronic crosslinking or chemical crosslinking.
The utility model also provides a method for the environment-friendly heat preservation carton, which comprises the following steps:
s1, compounding the cardboard paper, the press polished kraft paper, the non-woven fabric, the aluminum film, the pet film and/or the aluminum platinum with the cardboard paper in a high polymer material hot melting mode to form a surface paper layer;
s2, compounding the 2 corrugated paper bodies in a high polymer material hot melting mode to form a corrugated paper layer;
s3, carrying out composite bonding on the high polymer foaming material and the boxboard paper in a high polymer material hot melting mode to form a base paper layer;
preferably, the high molecular material comprises one or more of low density polyethylene, high density polyethylene, polypropylene and ethylene copolymer.
Preferably, the ethylene copolymer comprises one or more of ethylene octene copolymer poe, ethylene vinyl acetate copolymer eva, ethylene maleic anhydride copolymer ema and ethylene acrylic acid copolymer eaa in combination.
Preferably, the high molecular foaming material comprises one or more of EPE, IXPE, XPE, IXPP, XPP and MPET; further preferably, polyethylene IXPE, polyethylene XPE, polyethylene IXPP, polyethylene XPP, polypropylene IXPE, polypropylene XPE, polypropylene IXPP, polypropylene XPP are all electronic crosslinking or chemical crosslinking.
Preferably, the temperature of the hot melt compounding in the steps S1, S2 and S3 is 150-190 ℃.
Preferably, the bonding manner of the face paper layer, the corrugated paper layer and the base paper layer in the step S4 includes: and (5) gluing or hot-pressing fusion.
The glue bonding of the utility model comprises bonding by water-based glue commonly used for cartons.
The hot-press fusion of the utility model means that the resin on the surface of each layer is melted by temperature and pressure to realize the bonding of the tile paper, the bottom paper and the surface paper. The specific temperature and pressure are adjusted according to the actual material.
The structure and performance principle of the carton of the utility model is briefly summarized as follows: the surface paper layer of the carton is waterproof, and the problems that the temperature difference between the inside and the outside of the heat preservation box is large and the surface of the carton is seriously water-hardened are solved. The corrugated paper layer of the carton fixes the fibers of the net corrugated paper body through synthetic resin, thereby improving the strength and the moisture resistance and greatly prolonging the service life of the carton. No matter can both keep the thickness of cardboard under any environment, can not only effectively ensure the thermal insulation performance of carton and can also keep the carton durable. The bottom paper layer of the carton is formed by compounding a foaming material on the bottom paper body through hot melting of synthetic resin, so that toxic and harmful substances generated by glue bonding can be avoided, and meanwhile, the bottom paper layer also has the characteristics of heat preservation performance and buffer and collision prevention.
Compared with the prior art, the utility model has the beneficial effects and remarkable progresses that: the environment-friendly heat preservation carton and the method thereof provided by the utility model can achieve good heat preservation and waterproof effects, have good economic value, save energy and cost, and make immeasurable contribution to environmental protection. In addition, the heat preservation paper box can be directly recycled to a paper mill, paper pulp is dissolved in water in a hydrolysis mode, and high polymer materials are non-hydrophilic and have small specific gravity and water, float to the water surface after hydrolysis separation and can be completely separated through a filter screen. Therefore, the method is easy to recycle and can not produce any harmful substance to the environment, thereby reflecting the economic value.
Drawings
To more clearly illustrate the technical solution of the present invention, the drawings required for the embodiment of the present invention will be briefly described below.
It should be apparent that the drawings in the following description are only drawings of some embodiments of the utility model, and that other drawings can be obtained by those skilled in the art without inventive exercise, and the other drawings also belong to the drawings required by the embodiments of the utility model.
FIG. 1 is a schematic structural view of an environment-friendly insulation carton according to an embodiment of the present invention;
reference numerals: 1. a surface paper layer, 2 a corrugated paper layer, 3 a bottom paper layer.
Detailed Description
In order to make the objects, technical solutions, beneficial effects and significant progress of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below.
It is to be understood that all of the described embodiments are merely some, and not all, embodiments of the utility model; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that:
in the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, movably connected, or integrated; either directly or indirectly through intervening media, intangible signal, or even optical, communication between two elements, or an interaction between two elements, unless expressly limited otherwise.
The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be further noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
The technical means of the present invention will be described in detail below with specific examples.
As shown in fig. 1, a schematic structural diagram of an environment-friendly insulation carton is shown, which includes a face paper layer 1, a corrugated paper layer 2, and a base paper layer 3, where the face paper layer 1 includes a cardboard paper layer, a press-polished kraft paper layer, a non-woven fabric layer, an aluminum film layer, a pet film layer or an aluminum platinum layer, a cardboard paper layer, and polymer material layers connected between the cardboard paper layer and the layers, and the corrugated paper layer 2 includes 2 corrugated paper body layers and polymer material layers connected with the 2 corrugated paper body layers. The base paper layer 3 comprises a high polymer foaming material layer, a box board paper layer and a high polymer material layer for connecting the foaming material layer and the box board paper layer.
In this embodiment, the polymer material layer is made of low density polyethylene.
In this embodiment, the polymer foam material is EPE.
Example 1
The following materials were prepared:
a surface paper layer: wood pulp paper, calendaring kraft paper, non-woven fabric, aluminum film, pet film and low-density polyethylene;
corrugated paper layer: wood pulp paper, low density polyethylene;
a base paper layer: wood pulp paper, EPE, low density polyethylene.
The carton was prepared as follows:
1.1, compounding wood pulp paper, calendered kraft paper, non-woven fabric, aluminum film, pet film and wood pulp paper in a hot melting mode through low-density polyethylene to form a surface paper layer, wherein the hot melting temperature is 250-350 ℃;
1.2, compounding 2 pieces of wood pulp paper in a low-density polyethylene hot melting mode to form a corrugated paper layer, wherein the hot melting temperature is 250-350 ℃;
1.3, carrying out composite bonding on the EPE and the wood pulp paper by a low-density polyethylene hot melting mode to form a bottom paper layer, wherein the hot melting temperature is 250-350 ℃;
and 1.4, bonding the surface paper layer, the corrugated paper layer and the bottom paper layer through water-based glue to prepare the box body.
Example 2
A surface paper layer: wood pulp paper, calendaring kraft paper, non-woven fabric, aluminum film, pet film, aluminum platinum and ethylene acrylic acid copolymer eaa;
corrugated paper layer: wood pulp paper, ethylene acrylic acid copolymer eaa;
a base paper layer: wood pulp paper, polypropylene IXPE, ethylene acrylic acid copolymer eaa.
The carton was prepared as follows:
1.1, compounding wood pulp paper, calendered kraft paper, non-woven fabric, aluminum film, pet film and wood pulp paper in a hot melting mode through ethylene acrylic acid copolymer eaa to form a surface paper layer, wherein the hot melting temperature is 250-350 ℃;
1.2, compounding 2 wood pulp papers through ethylene acrylic acid copolymer eaa in a hot melting mode to form a corrugated paper layer, wherein the hot melting temperature is 250-350 ℃;
1.3, carrying out composite bonding on polypropylene IXPE and wood pulp paper through ethylene acrylic acid copolymer eaa in a hot melting mode to form a base paper layer, wherein the hot melting temperature is 250-350 ℃;
and 1.4, bonding the surface paper layer, the corrugated paper layer and the bottom paper layer through water-based glue to prepare the box body.
Example 3
A surface paper layer: wood pulp paper, calendaring kraft paper, non-woven fabric, aluminum film, pet film and low-density polyethylene;
corrugated paper layer: wood pulp paper, polypropylene;
a base paper layer: wood pulp paper, polyethylene IXPE, ethylene octene copolymer poe.
The carton was prepared as follows:
1.1, compounding wood pulp paper, calendered kraft paper, non-woven fabric, aluminum film, pet film and wood pulp paper in a hot melting mode through low-density polyethylene to form a surface paper layer, wherein the hot melting temperature is 250-350 ℃;
1.2, compounding 2 pieces of wood pulp paper through polypropylene in a hot melting mode to form a corrugated paper layer, wherein the hot melting temperature is 250-350 ℃;
1.3, carrying out composite bonding on polyethylene IXPE and wood pulp paper through ethylene-octene copolymer poe in a hot melting mode to form a base paper layer, wherein the hot melting temperature is 250-350 ℃;
and 1.4, bonding the surface paper layer, the corrugated paper layer and the bottom paper layer through water-based glue to prepare the box body.
Example 4 Heat insulation Performance test
Grouping experiments:
the eco-friendly thermal carton of example 1 having a thickness of 3mm was prepared to have an outer circumference of 26X 13X 23.5cm and an inner volume of 0.007m3A box, labeled group 1;
the eco-friendly thermal carton of example 2 having a thickness of 3mm was prepared to have an outer circumference of 26X 13X 23.5cm and an inner volume of 0.007m3A box, labeled group 2;
the eco-friendly thermal carton of example 3 having a thickness of 3mm was prepared to have an outer circumference of 26X 13X 23.5cm and an inner volume of 0.007m3A box, labeled group 3;
a commercially available conventional Expanded Polystyrene (EPS) incubator having a thickness of 2cm, a peripheral dimension of 30X 18.5X 13.5cm and an internal volume of 0.007m3Labeled group 4;
a commercially available plastic foam heat-insulation box with a thickness of 2cm has an outer circumference of 26.5 × 15.5 × 17.5cm and an inner volume of 0.007m3Labeled group 5;
a commercially available aluminum film incubator having an outer peripheral dimension of 26X 13X 23.5cm and an inner volume of 0.007m3Labeled group 6;
the experimental method comprises the following steps:
4.1, respectively placing 6 500g ice bags in 6 heat preservation bags;
4.2, respectively placing 6 heat preservation bags containing ice bags in the box bodies of the groups 1-6;
4.3, connecting the detection end of the temperature sensor with the ice bag, and placing one end for reading data outside the box bodies of the groups 1-6;
4.4, sealing 6 groups of boxes by using an adhesive tape, placing the boxes in a constant-temperature constant-humidity environment treatment box, setting the working temperature to be 27 ℃, and operating for 24 hours;
4.4, reading the temperature of the sensor in real time;
opening the boxes of the groups 1-6 after 4.5 and 24 hours, and recording the states of the ice bags and the temperature of the boxes.
Results of the experiment
The real-time temperatures of the ice packs of the bins of groups 1-6 are shown in table 1.
TABLE 1
It can be seen from table 1 that the insulation effect of the insulation carton groups 1-3 provided by the utility model is superior to that of the foamed EPS insulation carton, the plastic foamed insulation carton and the aluminum film insulation carton in the prior art. In particular, the temperature of the boxes in groups 1 and 2 was maintained within 1 ℃ during the first 16 hours of the experiment, while the temperature of the boxes in groups 4-6 of the control group reached 4.2-7.1 ℃ during the first 4 hours of the experiment. Therefore, the heat preservation time and the effect of the heat preservation box are obviously superior to those of the prior art.
The ice pack condition and bin temperature results after 24 hours for the bins of groups 1-6 are shown in Table 2 below.
TABLE 2
| Grouping | Initial state of ice bag | State of ice bag after 24h | Temperature in the box | Temperature of |
| Group | ||||
| 1 | Ice cube | Liquid water | 25.9 | 9.4 |
| |
Ice cube | Liquid water | 25.1 | 7.1 |
| |
Ice cube | Liquid water | 24 | 10.7 |
| Group 4 | Ice cube | Liquid water | 23 | 12 |
| Group 5 | Ice cube | Liquid water | 25.1 | 13.6 |
| Group 6 | Ice cube | Liquid water | 24.5 | 16.3 |
As can be seen from Table 2, the ice cubes in the 6 groups of ice bags were all in liquid state at the end of the experiment. The in-box temperatures between the 6 groups did not differ much. There may be errors caused by faster air convection when the box is opened. However, the temperature of the ice packs of groups 1-3 is 7.1-10.7 deg.C and the temperature of the ice packs of groups 4-6 is 12-16.3 deg.C. Therefore, the heat preservation effect of the heat preservation paper box group 1-3 provided by the utility model is superior to that of the foamed EPS heat preservation box, the plastic foamed heat preservation paper box and the aluminum film heat preservation paper box in the prior art.
In summary, the present invention has the following significant advantages over incubators of the prior art:
1. reduction of space cost
The prior art foam boxes are firstly not foldable and secondly the conventional wall thickness of the foam box is 2cm, and an outer box is required for transportation, and the thickness of the foam box is further increased. The thickness of the incubator provided by the utility model is 0.7cm, and the incubator can be folded, so that the space is saved.
2. Environment-friendly
The prior art plastic foam incubators, such as EPP, have not been degradable plastic, although they have been more contaminated than, for example, foam boxes. And the insulation can of this application is recycled paper, not only environmental protection still reduce cost. The heat preservation paper box can be directly recycled to a paper mill, paper pulp is dissolved in water in a hydrolysis mode, and high polymer materials are non-hydrophilic and have small specific gravity and water, float on the water surface after hydrolysis separation and can be completely separated through a filter screen. Therefore, the method is easy to recycle and can not produce any harmful substance to the environment, thereby reflecting the economic value.
During the description of the above description:
the description of the terms "this embodiment," "an embodiment of the utility model," "as shown at … …," "further improved technical solution," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model; in this specification, the schematic representations of the terms used above are not necessarily for the same embodiment or example, and the particular features, structures, materials, or characteristics described, etc., may be combined or brought together in any suitable manner in any one or more embodiments or examples; furthermore, those of ordinary skill in the art may combine or combine features of different embodiments or examples and features of different embodiments or examples described in this specification without undue conflict.
Finally, it should be noted that:
the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same;
although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes and modifications may be made, and equivalents may be substituted for elements thereof without departing from the scope of the embodiments of the present invention.
Claims (1)
1. An environment-friendly heat preservation carton is characterized by comprising a surface paper layer, a corrugated paper layer and a bottom paper layer from outside to inside,
the surface paper layer comprises a boxboard paper layer, a press polish kraft layer, a non-woven fabric layer, an aluminum film layer, a pet film layer or an aluminum platinum layer, a boxboard paper layer and a high polymer material layer connected among the layers,
the corrugated paper layer comprises 2 corrugated paper body layers and a polymer material layer connected with the 2 corrugated paper body layers,
the bottom paper layer comprises a high polymer foaming material layer, a box board paper layer and a high polymer material layer which is connected with the foaming material layer and the box board paper layer.
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| CN202120965338.6U CN215827428U (en) | 2021-05-08 | 2021-05-08 | Environment-friendly heat preservation carton |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120965338.6U CN215827428U (en) | 2021-05-08 | 2021-05-08 | Environment-friendly heat preservation carton |
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| CN215827428U true CN215827428U (en) | 2022-02-15 |
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