CN211469126U

CN211469126U - Low temperature resistant type packing carton

Info

Publication number: CN211469126U
Application number: CN201921891800.1U
Authority: CN
Inventors: 宋保民; 史剑锋
Original assignee: Shaanxi Baoli Huaying Packaging Co ltd
Current assignee: Shaanxi Baoli Huaying Packaging Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-09-11
Anticipated expiration: 2029-11-05

Abstract

The utility model relates to a low temperature resistant packaging carton, which comprises a box body and a box cover, wherein one side of the box cover is connected with the box body; the box body comprises a paper bottom plate and a paper side plate, and the paper bottom plate and the paper side plate are enclosed to form a cavity; the paper side plate comprises an inner paper layer, a surface paper layer and a framework layer arranged between the inner paper layer and the surface paper layer; and an asbestos heat-insulating layer is arranged between the framework layer and the surface paper layer; the low-temperature-resistant packaging carton also comprises a heating unit, wherein the heating unit comprises a temperature sensor for measuring the temperature in the cavity, an electrothermal film for providing heat for the cavity, a controller, a control switch and a power supply; the temperature sensor, the electrothermal film and the controller are respectively connected with the power supply in a conductive way, and the temperature sensor and the electrothermal film are respectively connected with the controller; the temperature sensor is arranged on the upper end face of the paper bottom plate, and the electrothermal film is fixed on the framework layer; the temperature in the cavity is in a relatively constant temperature interval, so that the problem that articles in the carton are frozen in the prior art is solved.

Description

Low temperature resistant type packing carton

Technical Field

The utility model relates to a low temperature resistant type packing carton.

Background

In our lives, many foods, fruits or things require long-distance transport and storage. The carton not only serves as an effective carrier, but also effectively protects the articles stored in the carton during transportation or storage. The carton can be divided into a corrugated carton and a single-layer carton according to different materials; depending on the environmental requirements of the transport or storage in which the articles are carried by the carton, different requirements are placed on the performance of the carton used to carry the articles.

The Chinese utility model patent with the publication number of CN206367668U discloses a "low temperature resistant carton", which comprises a side paper board, wherein the side paper board is provided with a first carton upper cover and a second carton upper cover, the second carton upper cover is positioned at one side of the first carton upper cover, the first carton upper cover is fixed with a first plastic buckle, the second carton upper cover is fixed with a second plastic buckle, the bottom end of the side paper board is fixed with a damp-proof paper bottom board, a glass fiber layer is arranged in the side paper board, one side of the glass fiber layer is provided with a grid, and the grid is provided with a PE low-pressure polyethylene layer; thereby solving the problems of easy breakage and poor low temperature resistance when packaging in a low temperature environment. However, when the low temperature resistant carton is used in an environment of high cold and low temperature, articles such as fruits, honey and cosmetics cannot be conveyed, and the conveyed articles cannot be insulated, so that the articles loaded in the carton are easily solidified or frozen.

SUMMERY OF THE UTILITY MODEL

The problem that articles are frozen and damaged when being transported in the environment with high cold and low temperature is solved; the utility model provides a low temperature resistant packaging carton; in order to achieve the above object, the utility model discloses a following technical scheme specifically as follows:

a low-temperature-resistant packaging carton comprises a carton body and a carton cover, wherein one side of the carton cover is connected with the carton body; the box body comprises a paper bottom plate and a paper side plate, and a cavity for loading articles is formed by the paper bottom plate and the paper side plate in a surrounding mode; the paper side plate comprises an inner paper layer, a surface paper layer and a framework layer arranged between the inner paper layer and the surface paper layer; an asbestos heat insulation layer used for preventing heat from being transferred outwards is arranged between the framework layer and the surface paper layer; the low-temperature-resistant packaging carton further comprises a heating unit, the heating unit comprises a temperature sensor for measuring the temperature in the cavity, an electrothermal film for providing heat for the cavity, a controller, a control switch and a power supply; the temperature sensor, the electrothermal film and the controller are respectively connected with a power supply in a conductive manner, and the temperature sensor and the electrothermal film are respectively connected with the controller; the temperature sensor is arranged on the upper end face of the paper bottom plate, and the electric heating film is fixed on the framework layer.

The utility model discloses a low temperature resistant type packing carton's beneficial effect: an asbestos heat-insulating layer is arranged in the paper side plate of the box body, so that heat exchange between the inside of the cavity and the outside of the box body is reduced, and the heat-insulating performance of the box body is improved. A heating unit is arranged in the box body and is heated by an electrothermal film, so that the uniformity of heating in the cavity is improved; when the carton is in a high-cold low-temperature environment, the heating unit is turned on, and the set temperature of the control switch is adjusted; the temperature sensor measures the temperature in the cavity and transmits a temperature signal to the controller, the controller compares the measured temperature signal with a set temperature for analysis, and the controller controls the power of the electrothermal film according to an analysis result; the temperature in the cavity is in a relatively constant temperature interval, so that the problem that articles in the carton are frozen in the prior art is solved. A framework layer is arranged between the inner paper layer and the surface paper layer; the strength of the paper side plate of the box body is improved, the box body is prevented from collapsing in the transportation process, and when articles in the carton are placed in the damaged box body, the electrothermal film arranged on the framework layer is effectively protected.

Furthermore, the inner surface of the framework layer is provided with a groove matched with the size of the electric heating film, and the electric heating film is fixed in the groove.

Has the advantages that: the electric heating film is arranged in the groove of the framework layer, so that the thickness of the paper side plate is reduced, the framework layer effectively protects the electric heating film, and the electric heating film is prevented from being bent in the use process.

Furthermore, the lower end of the paper bottom plate is provided with a moisture-proof pad.

Has the advantages that: the lower end face of the carton is provided with a moisture-proof pad to prevent water vapor from corroding the carton from the bottom of the carton; the moisture-proof pad also has a certain heat insulation effect, so that the heat insulation performance of the box body is improved.

Furthermore, waterproof films for preventing water vapor in the air from corroding the box body are respectively stuck on the outer surface of the paper side plate and the upper end surface of the box cover.

Has the advantages that: a layer of waterproof film is pasted on the outer surface of the paper side plate and the upper end face of the box cover, so that the overall moisture-proof capacity of the carton is improved, and the stability of the carton and the service life of the carton are facilitated.

Furthermore, the lower end face of the box cover is provided with a heat insulation layer, and the size of the heat insulation layer is matched with the upper port of the cavity.

Has the advantages that: when the case lid was buckled, the heat preservation shutoff was in the last port of the cavity of box, improved the leakproofness between case lid and the box, was favorable to the improvement of case lid lock back carton heat preservation performance.

Furthermore, magic tapes are fixedly connected to the outer side of the upper port of the box body and the circumferential side edge of the box cover respectively, and each magic tape comprises three sections which are arranged on two sides and opposite sides of one side, connected with the box body, of the box cover respectively; the box cover is connected with the upper port of the box body through a magic tape; thereby realizing the opening or the buckling of the box cover.

Has the advantages that: the magic tapes are arranged on the outer side of the upper port and the axial side edge of the box cover, so that the box body and the box cover are firmly connected when the box cover is buckled, and the connection sealing performance of the box body and the box cover is improved; the magic tape can be repeatedly used, and damage to the box body and the box cover when the adhesive tape is used is avoided.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the low temperature resistant packaging carton of the present invention;

FIG. 2 is a top view of an embodiment of the low temperature resistant packaging carton of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

fig. 5 is a schematic diagram of a heating unit of an embodiment of the low temperature resistant packaging carton of the present invention.

Reference numbers in the figures: 1-a box cover, 2-a box body, 21-a paper bottom plate, 22-a paper side plate, 221-a surface paper layer, 222-an inner paper layer, 223-a framework layer, 3-a heating unit, 31-a temperature sensor, 32-an electric heating film, 33-a controller, 34-a power supply, 35-a control switch, 4-a waterproof film, 5-a heat insulation layer, 6-a moisture-proof pad, 7-a magic tape and 8-an asbestos heat insulation layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:

the utility model discloses a concrete structure of low temperature resistant type packing carton embodiment is as shown in fig. 1, fig. 2, fig. 3 and fig. 4, including box 2 and case lid 1, one side and the box 2 of case lid 1 are connected, and case lid 1 passes through the indentation and is connected with box 2, and case lid 1 is rotatable around the indentation. The box body 2 includes a paper bottom plate 21 and a paper side plate 22, and the paper bottom plate 21 and the paper side plate 22 enclose a chamber for loading articles. A heating unit 3 is provided in the paper side plate 22.

The paper side plate 22 comprises an inner paper layer 222 and a surface paper layer 221; a framework layer 223 is arranged between the inner paper layer 222 and the surface paper layer 221, and in the embodiment, the framework layer 223 is a honeycomb paper core layer; the honeycomb paper sandwich layer has certain intensity to improve the intensity of the paper side plate 22 of the box body 2, prevent that the box body 2 from collapsing in the transportation process, damage when placing articles in the carton, effectively protect the electric heating film 32 arranged on the framework layer 223. In other embodiments, the skeleton layer may be a glass fiber layer with certain strength instead of the honeycomb paper core layer. An asbestos heat insulation layer 8 for preventing heat from being transferred outwards is arranged between the framework layer and the surface paper layer; the asbestos heat-insulating layer 8 has a certain heat-insulating effect; thereby reducing the heat exchange between the inside of the cavity and the outside of the box body and improving the heat preservation performance of the box body.

As shown in fig. 5, the heating unit 3 includes a temperature sensor 31 for measuring the temperature in the chamber, an electrothermal film 32 for supplying heat to the chamber, a controller 33 and a power source 34; the temperature sensor 31, the electrothermal film 32 and the controller 33 are respectively in conductive connection with the power supply 34, the temperature sensor 31 and the electrothermal film 32 are respectively connected with the controller 33, a control switch 35 for adjusting and setting temperature is arranged between the controller 33 and the electrothermal film 32, and the control switch 35 is arranged at the outer side of the box body 2; the temperature sensor 31 measures the temperature in the cavity by adjusting the switch to set the temperature, and transmits a temperature signal to the controller 33, the controller 33 compares the measured temperature signal with the set temperature for analysis, and the controller 33 controls the power of the electrothermal film 32 according to the analysis result; the temperature within the chamber is brought within a relatively constant temperature interval. When the measured temperature is lower than the set temperature, the electrothermal film 32 works and heats, and the output power of the electrothermal film 32 is in direct proportion to the difference between the set temperature and the measured temperature. In the present embodiment, the temperature sensor 31 used is a temperature sensor 31 of model RS 485; the controller 33 is a common single chip microcomputer; the electric heating film 32 is a 24V electric heating film 32 with the model number of TF-18651. In other embodiments, other types of temperature sensors, single-chip microcomputers and electrothermal films can be used instead. The temperature sensor 31 is arranged on the upper end face of the paper bottom plate 21, and the electric heating film 32 is fixed on the framework layer 223; in this embodiment, set up the recess with electric heat membrane 32 size adaptation at the internal surface of casing 223, electric heat membrane 32 fixes in the recess, when reducing paper side plate 22 thickness, casing 223 effectively protects electric heat membrane 32, prevents that electric heat membrane 32 from being bent in the use. In other embodiments, the electrothermal film can be directly embedded in the framework layer or directly arranged on the surface of the framework layer.

In the embodiment, the lower end face of the paper bottom plate 21 of the carton is provided with a moisture-proof pad 6, and the upper end face of the paper bottom plate 21 is provided with an asbestos heat-insulating layer 8; waterproof films 4 are respectively stuck on the outer surface of the paper side plate 22 and the upper end surface of the box cover 1; the surface that makes whole carton forms one deck dampproofing and waterproofing layer, effectively prevents the erosion of steam to box 2 to improve the whole dampproofing ability of box 2, prolong the life of carton. The waterproof film 4 is a layer of common plastic film; the damp-proof pad 6 is a cushion block with a layer of plastic film adhered on the surface. In other embodiments, the moisture-proof pad 6 or the waterproof film 4 may not be provided, or waterproof paint may be applied instead of the waterproof film 4 or the moisture-proof pad 6.

In this embodiment, a heat insulating layer 5 is arranged on the lower end surface of the box cover 1, and the size of the heat insulating layer 5 is matched with the upper port of the cavity. When case lid 1 lock, 5 shutoff of heat preservation improve the leakproofness between case lid 1 and the box 2 in the last port of the cavity of box 2, are favorable to the improvement of 1 lock back carton thermal insulation performance of case lid. Magic tapes 7 are fixedly connected to the outer side of the upper port of the box body 2 and the circumferential side edge of the box cover 1 respectively, and each magic tape 7 comprises three sections which are arranged on two sides and opposite sides of one side, connected with the box body 2, of the box cover 1; the box cover 1 is connected with the upper port of the box body 2 through a magic tape 7; thereby achieving the opening or the fastening of the cover 1. When the box cover 1 is buckled, the magic tape 7 enables the box body 2 and the box cover 1 to be firmly connected, so that the connection sealing performance of the box body 2 and the box cover 1 is improved; magic subsides 7 repeatedly usable avoids the adhesion damage to box 2 and case lid 1 when using the sticky tape. In other embodiments, the cover and the upper port of the box body are connected by using adhesive tapes instead of magic tapes.

The use process comprises the following steps: placing articles in the cavity of the carton, fastening the box cover 1, adhering the magic tape 7, opening the heating unit 3, and adjusting the set temperature of the control switch 35; the temperature sensor 31 measures the temperature in the cavity and transmits a temperature signal to the controller 33, the controller 33 compares the measured temperature signal with a set temperature for analysis, and the controller 33 controls the power of the electrothermal film 32 according to the analysis result; the temperature in the cavity is kept in a relatively constant temperature interval, so that the articles are kept in a relatively constant temperature environment, and the articles are effectively prevented from being frozen.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A low-temperature-resistant packaging carton comprises a carton body and a carton cover, wherein one side of the carton cover is connected with the carton body; the box body comprises a paper bottom plate and a paper side plate, and a cavity for loading articles is formed by the paper bottom plate and the paper side plate in a surrounding mode; the paper side plate comprises an inner paper layer, a surface paper layer and a framework layer arranged between the inner paper layer and the surface paper layer; an asbestos heat insulation layer used for preventing heat from being transferred outwards is arranged between the framework layer and the surface paper layer; the low-temperature-resistant packaging carton further comprises a heating unit, the heating unit comprises a temperature sensor for measuring the temperature in the cavity, an electrothermal film for providing heat for the cavity, a controller and a power supply; the temperature sensor, the electrothermal film and the controller are respectively connected with a power supply in a conductive manner, and the temperature sensor and the electrothermal film are respectively connected with the controller; the temperature sensor is arranged on the upper end face of the paper bottom plate, and the electric heating film is fixed on the framework layer.

2. The low temperature resistant packaging carton according to claim 1, wherein a groove matched with the size of the electric heating film is formed in the inner surface of the framework layer, and the electric heating film is fixed in the groove.

3. A cold-resistant packaging carton according to claim 1, wherein the lower end of said paper bottom panel is provided with a moisture-proof pad.

4. A low temperature resistant packaging carton according to claim 1 or 2, wherein waterproof films for preventing moisture in the air from corroding the box body are respectively adhered to the outer surface of the paper side panel and the upper end surface of the box cover.

5. The low temperature resistant packaging carton according to claim 4, wherein the lower end face of the box cover is provided with an insulating layer sized to fit the upper end opening of the cavity.

6. The low temperature resistant type packaging carton according to claim 1, 2 or 3, wherein magic tapes are fixedly connected to the outer side of the upper port of the box body and the circumferential side edge of the box cover respectively, and each magic tape comprises three sections which are arranged on two sides and opposite sides of one side of the box cover connected with the box body respectively; the box cover is connected with the upper port of the box body through a magic tape; thereby realizing the opening or the buckling of the box cover.