JP4855609B2 - Insulated transport packaging container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging container, and more particularly, to a heat retaining packaging container that can maintain a predetermined temperature for a long time in the packaging container in order to prevent freezing of products and low-temperature troubles at low temperatures during transportation.
[0002]
[Prior art]
In recent years, goods that cannot be frozen or cold-injured, such as renal dialysis members, have been transported in warm cars that are kept at a predetermined temperature for urban areas. Transportation means corresponding to the traffic conditions of, for example, passengers who monitor the temperature in the packaging container in which the product and the heat storage agent are packaged and exchange the heat storage agent, etc. Since it was transported, the transportation cost was very high. In addition, there was no low temperature failure.
[0003]
[Problems to be solved by the invention]
However, in the heat insulation packaging container of the above prior art, considering the convenience of handling, packaging workability, leakage prevention, etc., as a heat storage agent, a water-based substance that has a relatively large specific heat and is easily available everywhere As a result, it was put in a plastic bag and heated to a predetermined temperature before use. This method has the advantage that the temperature in the packaging container does not rise above the heating temperature of the heat storage agent and can be used repeatedly.
[0004]
However, a water-based heat storage agent requires a large amount of heat storage agent in order to obtain a necessary amount of heat for long-time transportation, which increases the volume and mass of the packaging container and increases the transportation cost. In addition, since a device for heating the heat storage agent is necessary and heating takes time, it is difficult to carry out packaging work anywhere easily, and it is difficult to prepare and transport in a short time. There was a problem.
In addition, it may be possible to use a so-called disposable hood for the heat storage agent. However, it is impossible to obtain stable heat generation for a long time because air is not supplied properly after the packaging container is sealed. There was a problem that temperature control was difficult.
[0005]
The present invention has been made to solve the problems of the prior art, and when a product is transported by heat, the packaging work is simple, light weight, compact, inexpensive to transport, and almost certainly set for a long time. The object is to provide a packaging container capable of maintaining temperature.
[0006]
[Means for Solving the Problems]
To achieve the above object, the configuration of the packaging container according to the present invention, the insulated container top surface is opened, the heat insulating shipping packaging container comprising a thermally insulated container lid for closing the open mouth of the top surface, the A cushioning material is provided between the lower surface of the object to be stored in the heat insulating container and the inner surface of the bottom wall of the heat insulating container to form a lower surface gap serving as an air supply space to the heating element, and the upper surface of the object to be stored the insulated container forms a top clearance to be air supply space to the heating element between the bottom surface of the cover, both sides and both sides of the insulated container of the communicating with the top gap and said lower surface gap and the accommodated article A flat wrapping bag in which the exothermic composition that generates heat due to the presence of air is divided into a plurality of sections in the gap between the side surfaces formed between the inner surface of the wall and the surface and the back surface are made air-permeable. said heating element is housed formed by coating with an air supply restriction member, Serial air supply hole for supplying air is provided to the heating element to the heat-insulating container and is characterized in that a ventilation moderator to adjust the air flow to the heat-insulating container to the air supply hole.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
Hereinafter, each embodiment of the packaging container according to the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is an explanatory view of an embodiment of a packaging container according to the present invention, FIG. 2 is an explanatory view of a modification of the embodiment of the packaging container according to the present invention, and FIG. 3 is an illustration of the packaging container according to the present invention. It is explanatory drawing of the other modification of one Embodiment.
[0008]
In FIG. 1, a packaging container 100 includes a heat insulating container 1 including an outer surface protective material 8 having a top surface opened, an inner surface made of a heat insulating material 7, and an outer surface having mechanical strength and water resistance. The container lid 2 is made of the same member as the heat insulating container 1, and the container lid 2 closes the opening on the top surface of the heat insulating container 1.
[0009]
In the heat insulating container 1, the storage objects 5-1 and 5-2 that are stacked and stored in the vertical direction, and the bottom-side cushioning material 10a that supports the storage objects 5-1 and 5-2, 10a ', the top cushioning materials 10b and 10b' in contact with the upper surface of the upper storage object 5-1, the side surfaces of the stored objects 5-1 and 5-2, and the side surfaces The gaps 9a and 9a 'provided between the opposing inner wall surfaces of the heat insulating container 1 and the gaps 9a and 9a' are covered with air supply restricting materials 6-1 and 6-1 ', respectively, and the presence of air And heating elements 6 and 6 'that generate heat.
[0010]
Further, the side surface of the heat insulating container 1 (the left and right surfaces in FIG. 1 are referred to as the side surfaces) communicates with the internal space of the heat insulating container 1 and supplies air to the heating elements 6 and 6 '. Holes 3 and 3 ′ are provided, and air supply members 4 and 4 ′ that adjust air supplied to the internal space of the heat insulating container 1 are provided in the air supply holes 3 and 3 ′, respectively. The air supply holes 3, 3 ′ are blocked by obstacles during transportation or storage, and the supply of air to the heating elements 6, 6 ′ is obstructed. Protective materials 11a and 11a ′ are provided in order to reduce the heat generation of the heating elements 6 and 6 ′ and prevent the temperature in the packaging container 100 from decreasing.
[0011]
The protective members 11a and 11a ′ are arranged along the periphery of the air supply holes 3 and 3 ′ as shown in the figure. Although not shown in detail, a plurality of bar members are provided in the vicinity of the air supply holes 3 and 3 ', and the air supply holes 3 and 3' are prevented from being blocked by the protruding function of the bar members. You can do that.
[0012]
The air supply holes 3, 3 ′ may be provided on the two side surfaces of the heat insulating container 1 facing the heating elements 6, 6 ′. It can be provided. Further, a necessary hole diameter area is determined by the size of the internal space of the heat insulating container 1, the necessary heat retention time, the heat retention temperature, and the function of the air flow adjusting material, and the air supply hole 3, A large number of 3 'may be provided, or a single 3'. In some cases, it can be omitted.
[0013]
Here, each component of the packaging container 100 mentioned above is demonstrated.
The heat insulating container 1 is a rectangular parallelepiped whose top surface is opened and the side surface and the bottom surface are integrated. The heat insulating material 7 disposed on the inner side and the outer side of the heat insulating material 7 have waterproofness and mechanical strength. The heat insulating material 7 and the outer surface protective material 8 are fixed and integrated.
[0014]
The heat insulating material 7 is made of, for example, foamed polystyrene, and the outer surface protecting material 8 is made of, for example, a waterproof corrugated cardboard. Examples of adhesives that firmly bond the two include rubber-based, acrylic-based, and the like.There are many types of solvent types, and coating methods include full-solid coating, full-spraying, etc. Any combination is acceptable. The heat insulating container 1 may be a corrugated cardboard in which the heat insulating material 7 and the outer surface protecting material 8 are integrated and the inner layer includes an air layer. Furthermore, the heat insulation container 1 may not be constituted by fixing both members of the heat insulating material 7 and the outer surface protecting material 8 but may be constituted only by the heat insulating material 7, for example, polystyrene foam.
[0015]
The heating elements 6 and 6 'are air supply restricting materials 6-1 and 6- 6 in which the heat generating compositions 6-2 and 6-2' that generate heat in the presence of air, respectively, have air permeability on the front surface and / or the back surface. It is housed in a 1 'wrapping bag, and the outer edge of the wrapping bag is closed by adhesion, heat bonding or pressure bonding to form a flat wrapping bag. Furthermore, the heating elements 6 and 6 'in the flat wrapping are accommodated in a plurality of sections, and the uniform heating reaction is sustained for a long time. A function for preventing the deformation of the lip is provided.
[0016]
The exothermic compositions 6-2 and 6-2 ′ are explained with an example. Iron powder that represents 50% of the mass of the heating element, chemically reacts with oxygen in the air, and generates heat of oxidation, and heating element 25% of the amount of salt, which is a catalyst that accelerates the oxidation reaction of the iron powder, and 25% of the mass of the heating element, adsorbs oxygen in the air, and converts the adsorbed oxygen into iron powder It consists of a mixture of carbon to be supplied and diatomaceous earth that acts to prevent solidification of the previously oxidized iron on the surface of the heating element and to prevent oxygen from being supplied to the unreacted iron powder inside. ing.
[0017]
The chemical reaction of the exothermic compositions 6-2 and 6-2 ′ will be described.
Fe + 3 / 4O ₂ + 3 / 2H ₂ O → Fe (OH) ₃ +96.5 kcal (1)
In the actual reaction of the exothermic compositions 6-2 and 6-2 ′, it is unclear whether all Fe travels to Fe (OH) ₃ within the heat retention time, and is involved in the reaction of 100% oxygen in the air. Since it is unknown whether 1 mol of O ₂ is required for 1 mol of Fe.
[0018]
The air supply restricting members 6-1 and 6-1 ′ may be in the form of a film or a sheet in which air can flow in. For example, a woven fabric, a nonwoven fabric, a foamed porous film, or a sheet | seat is mentioned. The heat generation temperature and the heat generation speed vary depending on the material, thickness, weight, bulk density, porosity, surface characteristics, and the like of the air supply restriction materials 6-1 and 6-1 ′.
If necessary, the surface of the flat bag of the air supply restricting members 6-1 and 6-1 ′ may be made porous by needle drilling or stretching.
[0019]
Here, the exothermic chemical reaction in the wrapping bag and the necessary ventilation amount of the air supply restriction materials 6-1 and 6-1 'will be described.
When the number of moles of iron powder in the sachet is m, the reaction duration is T time, the effective area of the air supply restriction materials 6-1 and 6-1 ′ is Scm ² , and the air flow rate is Al / hour · cm ² ,
A = (m × 22.4 × 5) / (T × S) (2)
The said effective area S means the part by which the porous process of the flat wrapping of the air supply restriction | limiting material 6-1 and 6-1 'was made, and the iron powder was accommodated. For example, in the case where the porous treatment is performed on the front and back of the wrapping bag, it becomes almost twice as compared with the case of the front or back. In accordance with the equation (2), the air flow rate A is calculated, and the necessary flattening processing of the flat wrapping bag is actually performed.
[0020]
The ventilation control members 4 and 4 ′ are basically the same material as the air supply restriction members 6-1 and 6-1 ′, and have a function of preventing moisture and foreign matter from entering the packaging container 100. In general, the ventilation regulators 4 and 4 'are designed to have a ventilation amount based on the size of the air supply holes 3 and 3' and the amount of air necessary for the oxidation reaction per hour of the heating elements 6 and 6 '. A material having such a function as to obtain this air flow rate is selected.
[0021]
Consider the amount of ventilation of the ventilation regulators 4, 4 '.
The number of moles of iron powder in the sachet is m, the amount of air initially present in the packaging container is v, the reaction duration is T hours, the area used for the ventilation regulators 4 and 4 ′ is Scm ² , and the amount of ventilation is Al. / Hour · cm ²
A = (m × 22.4 × 5-v) / (T × S) (3)
[0022]
Protective materials 11a and 11a 'are provided around the air holes 3 and 3' in order to prevent the air holes 3 and 3 'from being blocked by other cargo during transportation and hindering ventilation. If there is mechanical strength, the shape and material are not specified. For example, a rubber rod-like protruding member is used.
[0023]
The bottom cushioning materials 10a and 10a ′ and the top cushioning materials 10b and 10b ′ are made of a foamed polystyrene or a paper member. The bottom-side cushioning materials 10a and 10a 'support the objects 5-1 and 5-2, and their cross-sectional shapes are rectangular. The top surface side cushioning materials 10b and 10b 'are attached to the top surfaces of the objects to be stored 5-1, 5-2, and position the objects to be stored 5-1, 5-2. .
[0024]
The top surface side cushioning materials 10b and 10b ′ are not essential, and the positioning function of the objects 5-1 and 5-2 facing the heating elements 6 and 6 ′ and the role of the cushioning material are combined. There is no problem. The bottom buffer materials 10a and 10a 'and the top buffer materials 10b and 10b' have a function of improving the heat insulation effect and forming an air supply passage to the heating elements 6 and 6 '. Further, instead of the bottom side buffer materials 10a and 10a ′ and the top surface side buffer materials 10b and 10b ′, support columns made of buffer materials may be provided at the four corners of the heat insulating container 1.
[0025]
A modification of the packaging container of FIG. 1 will be described with reference to FIGS.
The modifications of these packaging containers are almost the same as the packaging container 100 according to the embodiment of FIG. 1, but in FIG. 2, the inner lid is provided, and in FIG. 3, the desiccant is the same as the object to be stored. Although not shown in the figure, it is different in that nitrogen is enclosed in the packaging container 100. These differences will be mainly described. 2 and 3, the same reference numerals as those in FIG. 1 have the same specifications and the same functions, and thus the description thereof will be omitted.
2 and 3, the top side cushioning materials 10 b and 10 b ′ are omitted, and the positioning function of the objects 5-1 and 5-2 to which the heating elements 6 and 6 ′ face each other, and the cushioning material. It is configured to share the role of.
[0026]
Moreover, in FIG. 2, the inner lid 20a which can respond according to the number of the articles 5 is provided. Thereby, the size of the space can be adjusted to improve the heat retention characteristics.
Further, in FIG. 3, the heating elements 6 and 6 ′ and the anti-condensation drying material 20 b are bundled. Thereby, the water of the salt solution which is a catalyst for promoting the oxidation reaction of the iron powder in the exothermic composition evaporates due to the heat generation, and the packaged container 100 becomes in a high humidity state or dew condensation causes 5-1, 5 -2 can be prevented from getting wet. In addition, although not shown in figure, the desiccant 20b for dew condensation prevention is hold | maintained in the space on the top | upper surface of the to-be-packaged object 5-1.
[0027]
Furthermore, although detailed illustration is abbreviate | omitted, the modification which expelled the air in the packaging container 100 and enclosed nitrogen at the time of packing is demonstrated. The heating elements 6 and 6 'in the packaging container 100 generate heat more than necessary at the beginning of the exothermic reaction due to the presence of air during packaging, and the heat generation duration is shortened accordingly. Therefore, when packing, the air inside the packaging container 100 is purged and nitrogen is enclosed, and the nitrogen and the air outside the packaging container 100 are exchanged through the air supply holes 3 and 3 ', and the exothermic reaction proceeds gradually. To do. In this way, heat generation at the initial stage of the exothermic reaction is suppressed, and the heat generation duration is kept long. This heat retention characteristic will be described later.
[0028]
Next, the usage method of the packaging container comprised in this way and the heat retention characteristic of an actual packaging container are demonstrated.
In FIG. 1, the heat insulating container 1 is in a state in which the container lid 2 is removed and the top surface is opened. Bottom surface side buffer members 10 a and 10 a ′ are arranged at predetermined positions on the bottom surface of the heat insulating container 1. An object 5-2 is placed on the bottom-side buffer members 10a and 10a '. Heat generating elements 6 and 6 ′ are inserted in the gap between the storage object 5-2 and the inner wall surface of the heat insulating container 1.
Furthermore, in order to increase the number of objects to be stored, the objects to be stored 5-1 are stacked and placed on the objects to be stored 5-2. Then, the packaging operation is completed when the container lid 2 from which the opened top surface is removed is closed and tightened with a packaging belt. If necessary, the positioning and buffering action may be reinforced by the top cushioning members 10b and 10b ', and if necessary, the inner lid 20a and the anti-condensation drying material 20b may also be installed.
[0029]
In the heating elements 6 and 6 ′ of the packaging container 100 for which the packaging operation has been completed, air is supplied via the air supply restriction materials 6-1 and 6-1 ′. The supplied oxygen in the air is adsorbed by carbon contained in the exothermic compositions 6-2 and 6-2 ', and the adsorbed oxygen is supplied to the iron powder. The iron powder chemically reacts with the supplied oxygen and generates heat of oxidation. Saline promotes the chemical reaction as a catalyst, and diatomaceous earth or the like prevents the already oxidized iron powder from solidifying on the surface of the heating element 6, 6 ′, and supplies oxygen to the unreacted iron powder inside. It works so as not to inhibit it.
[0030]
In this way, when the exothermic reaction of the heating elements 6 and 6 ′ proceeds in the packaging container 100, oxygen is consumed, the concentration is diluted, and a concentration difference from the oxygen concentration in the outside air occurs. Due to the diffusion based on the concentration difference, the outside air enters the packaging container 100 through the air flow adjusting materials 4 and 4 ′. In this manner, air is constantly supplied through the air flow control members 4 and 4 'so that the exothermic chemical reaction is sustained.
[0031]
The actual heating temperature and heating rate of the heating elements 6 and 6 ′ are the environmental conditions of the place to be transported, such as temperature (decrease to about −10 ° C.), transport time, heating composition 6-2 and 6-2 ′. , The size of the air supply holes 3, 3 ', the material, thickness, weight, bulk density, porosity, surface of the air supply restriction materials 6-1, 6-1' and the ventilation control materials 4, 4 ' It is determined by these combined characteristics such as characteristics. Therefore, an appropriate combination that is confirmed by a normal experiment and most suitable for the purpose is used.
[0032]
Next, the temperature characteristics of the packaging container according to the present invention will be described with reference to experimental examples. FIG. 4 is a temperature characteristic comparison diagram of each heating element in the packaging container according to the present invention.
As shown in FIG. 1, two heating elements (inner capacity 135 g) are stored in a packaging container 100 (length 640 cm × width 405 cm × height 500 cm), and the inner capacity 135 g is divided into three 45 g. A flat sachet that is stored. A commercially available heating element is approximately equivalent. The objects to be stored 5-1 and the objects to be stored 5-2 are (length 594 cm × width 334 cm × height 205 cm), respectively.
[0033]
In the temperature measurement, a plurality of temperature sensors are arranged on the surface of the heating element, and the output of the temperature sensor is recorded by a multipoint recorder every predetermined time, and the ambient temperature is 20 ° C. In an actual packaging container, the multipoint recorder may record the temperature history at each important point during transportation, and the multipoint recorder may be replaced with an indicator and a plurality of sensors arranged at predetermined positions. And the changeover switch may be used to indicate the required temperature.
[0034]
The black ● mark is for a commercially available heating element, the black ■ mark is for a heating element containing a heating composition in an air supply restriction material, and the black ▲ mark is the same as the black heating mark. Each of the cases where the air in the packaging container 100 is expelled initially, nitrogen is sealed, and the exothermic reaction is advanced by the subsequent replacement of the nitrogen and air is shown. In addition, the sealing of the nitrogen can be easily performed with a nitrogen cylinder, a pressure reducing valve, and a commercially available vinyl tube.
[0035]
As shown in FIG. 4, the black mark ● rises to 65 ° C. in the initial stage, drops to 30 ° C. in only 20 hours, and considering the ambient environment temperature, the use limit is 20 hours at most. On the other hand, the present invention marked with black ■ is only raised to 45 ° C. in the initial stage and takes 40 hours to fall to 30 ° C., and can be used during that time. When the air in the packaging container 100 indicated by the black triangle is purged and filled with nitrogen, it initially rises only to 35 ° C., takes 50 hours to fall to 30 ° C., and can be used during that time.
[0036]
As described above, the packaging container according to the present invention includes the environmental conditions of the transportation place, the transportation time, the amount of the heat generating compositions 6-2 and 6-2 ′, the air supply restriction materials 6-1 and 6-1 ′, and the ventilation control. The temperature characteristics can be freely determined by these combined characteristics such as the characteristics of the materials 4 and 4 '.
[0037]
【The invention's effect】
As described above in detail, according to the configuration of the present invention, when a product is transported while keeping warm, the packaging work is simple, light weight, compact, low in transportation cost, and can reliably maintain a set temperature for a long time. A container can be provided.
[Brief description of the drawings]
FIG. 1 is an explanatory view of an embodiment of a packaging container according to the present invention.
FIG. 2 is an explanatory view of a modification of the embodiment of the packaging container according to the present invention.
FIG. 3 is an explanatory view of another modification of the embodiment of the packaging container according to the present invention.
FIG. 4 is a temperature characteristic comparison diagram of each heating element in the packaging container according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Thermal insulation container, 2 ... Container lid, 3, 3 '... Air supply hole,
4, 4 '... Air conditioning material, 5-1, 5-2 ... Object to be stored, 6, 6' ... Heating element,
6-1, 6-1 '... air supply limiting material, 6-2, 6-2' ... exothermic composition,
7 ... heat insulating material, 8 ... outer surface protecting material, 9a, 9a '... gap,
10a, 10a '... bottom side buffer material, 10b, 10b' ... top side buffer material,
11a, 11a '... protective material, 100 ... packaging container

Claims (3)

And insulated container top surface is opened, the heat insulating shipping packaging container comprising a thermally insulated container lid for closing the open mouth of the top,
A cushioning material is provided that forms a lower surface gap serving as an air supply space to the heating element between the lower surface of the object to be stored in the heat insulating container and the bottom wall inner surface of the heat insulating container,
Forming an upper surface gap serving as an air supply space to the heating element between the upper surface of the storage object and the lower surface of the heat insulating container lid;
A plurality of exothermic compositions that generate heat due to the presence of air in side gaps that communicate with the upper gap and the lower gap and that are formed between both side faces of the object to be stored and inner faces of both side walls of the heat insulating container. divided into sections, the heating element is housed which is formed by coating a porous treatment by the surface and the back surface to the air supply restriction member of the flat wrapper which gave breathability,
An air supply hole for supplying air to the heating element is provided in the heat insulating container ,
A heat-insulating transport packaging container , wherein an air-adjusting material is provided in the air supply hole to adjust the air flow into the heat-insulating container. 2. The insulated transport packaging container according to claim 1, wherein the air supply hole includes a protective member that prevents the air supply hole from being blocked . The heat-insulating transport packaging container according to claim 1 or 2, wherein a desiccant is stored in the packaging container.

Images