JP7036967B1 - Container and humidity control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container provided with a humidity control member inside so that a portion having a humidity control function is not easily damaged, and a humidity control device used for the container. A humidity control member 100 is suspended in the vicinity of a ceiling surface 1a of a container 1 by a suspension member 200. The humidity control member 100 includes a first layer 110 and a second layer 120 containing Wakkanai diatomaceous earth. The second layer 120 contains vermiculite and is arranged at a position where the first layer 110 is sandwiched between the second layer 120 and the ceiling surface 1a. Air flows between the space inside the container 1 from the second layer 120 and the space 110 inside the first layer 110 via the second layer 120, and the space inside the second layer 120 is regulated in humidity. The humidity control member 100 is bent, and the vibration of the entire container 1 causes vibrations related to the degree of bending of the humidity control member 100. [Selection diagram] Fig. 2

Description

The present invention relates to a container and a humidity control device.

In order to maintain the condition of the cargo in transit, it is important to adjust the humidity inside the container appropriately. In order to adjust the humidity, it is conceivable to provide a member for humidity control in the container. The decorative sheet described in Patent Document 1 is an example thereof, and is a sheet for humidity control used inside a truck or the like. The sheet is composed of a diatomaceous earth layer formed on a base material made of paper or resin. In the base material, an adhesive layer is formed on the surface opposite to the surface on which the diatomaceous earth layer is formed. Since the adhesive layer is provided for attaching the sheet to the ceiling or the like, the diatomaceous earth layer is used in a state of being exposed to the space inside the truck.

Japanese Unexamined Patent Publication No. 2005-324488

The decorative sheet of Patent Document 1 is used in which the diatomaceous earth layer, which is a portion having a humidity control function, is exposed in the internal space. Therefore, when an object or a person comes into contact with the sheet, there is a high possibility that it will come into direct contact with the diatomaceous earth layer. If the diatomaceous earth layer is damaged by this, the humidity control function of the sheet is deteriorated.

Therefore, the present invention has been made to solve the above-mentioned problems, and is a container provided with a humidity control member inside so that a portion having a humidity control function is not easily damaged, and a humidity control used therefor. Provide the device.

The container of the present invention is a container provided with a humidity control member arranged in the vicinity of the inner wall surface, and the humidity control member is laminated on a first layer containing mesoporous silica and the first layer, and the mesoporous member is laminated. It contains a porous material different from silica, and has a second layer arranged at a position where the first layer is sandwiched between the inner wall surface and the inner wall surface. Air flows between the inner space and the first layer through the second layer so that the inner space is humidity-controlled.

The humidity control device according to another aspect of the present invention is a humidity control device arranged in the vicinity of the inner wall surface of the container, and is laminated with a first layer containing mesoporous silica and the mesoporous silica. The container contains different porous materials and is provided with a second layer arranged at a position sandwiching the first layer between the inner wall surface and the inner wall surface, and the mesoporous silica of the first layer makes the container more than the second layer. Air flows between the inner space and the first layer through the second layer so that the inner space of the pores is regulated in humidity.

In order to reduce transportation costs, containers are often loaded with various types of products at the same time and transported, not limited to the same type. Therefore, it is necessary to take measures to maintain the environment inside the container, especially when transporting fresh food, to suppress the growth of microorganisms, and it is important to adjust the humidity appropriately and prevent dew condensation.

Mesoporous silica is silicon dioxide (Si) having pores (mesopores) of 2 to 50 nm.
O ₂ ). The amount of moisture absorbed by mesoporous silica increases as the relative humidity increases, and the amount of moisture released increases as the relative humidity decreases. That is, mesoporous silica has a humidity control function that autonomously regulates water vapor in the atmosphere.

According to the present invention, the first layer containing mesoporous silica having a high humidity control function as described above is located between the inner wall surface of the container and the second layer containing a porous material different from mesoporous silica. .. In this way, since the second layer is arranged on the inner side of the container so that the first layer is not directly exposed on the inner side of the container, at first glance, the humidity control inside the container by the first layer is greatly hindered. It seems to be. However, in the present invention, the second layer functions to allow air to flow between the internal space and the first layer. Therefore, the humidity control function of the first layer is ensured. Further, since the second layer is arranged on the inner side of the container so that the first layer is not directly exposed on the inner side of the container, the possibility that the layer containing mesoporous silica comes into direct contact with an object or a person is reduced. Therefore, the first layer having a humidity control function is not easily damaged. As described above, the humidity control function of the container by the first layer can be maintained.

In the present invention, it is preferable that the inner wall surface is a ceiling surface. First, the ceiling surface is a place where a temperature difference is likely to occur even in the container, and condensation is likely to occur. Therefore, the humidity control function can be effectively exhibited by providing the humidity control member in the vicinity of the ceiling surface. Further, in the present invention, the first layer having a humidity control function faces the ceiling surface side. Therefore, the humidity that causes dew condensation on the ceiling surface can be effectively absorbed by the first layer. Secondly, there is a high possibility that the upper part of the cargo or the mast of the forklift will approach the ceiling surface when loading the cargo into the container. On the other hand, in the present invention, the second layer is arranged below the first layer. Therefore, it is possible to prevent the first layer having a humidity control function from being damaged by contact with the cargo or the upper part of the mast of the forklift.

In the present invention, it is preferable that the humidity control member is suspended in the vicinity of the ceiling surface by a suspension member that supports at least one end of the humidity control member and the end on the opposite side thereof. According to this, the humidity control member can be easily attached to and detached from the container by the hanging member that supports the humidity control member. Further, when the humidity control member bends due to being suspended near the ceiling surface, it bends downward in a convex shape. This deflection causes compressive stress in the upper part of the humidity control member and tensile stress in the lower part of the humidity control member. On the other hand, in the present invention, the first layer is arranged on the upper part and the second layer is arranged on the lower part of the humidity control member. Therefore, since the first layer containing mesoporous silica is less likely to be pulled, the generation of cracks in the first layer due to the pulling is suppressed.

In the present invention, it is preferable that the humidity control member is bent, and the vibration of the entire container causes vibration related to the degree of bending of the humidity control member. When the vibration of the entire container is transmitted to the humidity control member, if the energy of the vibration transmitted to the humidity control member is distributed to the vibration of the degree of bending of the humidity control member, the humidity control member moves or rotates in parallel by that amount. Vibration related to movement is suppressed. Therefore, the risk of damage or drop of the member due to vibration of the humidity control member related to translation or rotation is reduced.

It is a schematic diagram which shows the state which the humidity control member which concerns on embodiment of this invention is suspended in the vicinity of the ceiling surface in a container. It is a schematic front view of the humidity control member and the suspension member of FIG. (A) It is sectional drawing along the stacking direction of the thing which sealed other than the upper surface of the humidity control member which consists only of the layer member which is a flat plate of Mois. (B) It is sectional drawing along the stacking direction of the thing which sealed other than the upper surface of the humidity control member which laminated the layer member which is the flat plate of Mois on the upper surface of the layer member containing Wakkanai diatomaceous earth. (C) The humidity control member shown in (b) is arranged so that the surface corresponding to the upper surface faces the lower surface, and the surface other than the upper surface thereof is sealed, and is a cross-sectional view taken along the stacking direction.

The container 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. For the container 1 shown in FIG. 1, for example, a dry container for marine transportation or the like is used. The size of the container 1 is not limited, and for example, a 10-foot container, a 20-foot container, a 40-foot container, a 40-foot high cube container, a 45-foot container, or the like according to the International Organization for Standardization (ISO) standard is used. The container 1 corresponds to both sea shipping and land shipping, and is used for domestic and foreign transportation. In the following, as shown in FIG. 1, the width direction of the container 1 is defined as the left-right direction. Further, the direction orthogonal to both the left-right direction and the up-down direction is defined as the front-back direction. In FIG. 1, the front-back direction corresponds to the direction connecting the front and the back.

The container 1 includes a humidity control member 100 and a suspension member 200. The humidity control member 100 alone corresponds to the humidity control device in the present invention. As shown in FIG. 2, the humidity control member 100 includes a first layer 110 and a second layer 120.

The size of the first layer 110 in the left-right direction is one size smaller than the size of the ceiling surface of the container 1 in the left-right direction. The size of the first layer 110 in the front-rear direction is one size smaller than the size of the ceiling surface 1a of the container 1 in the front-rear direction divided into five equal parts. The size of the first layer 110 in the front-rear direction may be one size smaller than the size of the ceiling surface 1a in the front-rear direction divided into two, three, or six or more. Also, the division does not have to be evenly divided.

The first layer 110 includes a top coat material and an undercoat material. The topcoat material is laminated on the upper surface of the undercoat material. The topcoat and primer contain mesopore diatomaceous earth, aggregate, glue, soot, and corrosion inhibitors, respectively.

Mesopore diatomaceous earth is a diatomaceous earth formed by depositing diatomaceous earth and the like, with mesoporous silica as the main component. The average diameter of the mesopore is preferably 2 to 50 nm, more preferably 10 nm. Artificially synthesized mesoporous silica may be used instead of mesopore diatomaceous earth.

From the viewpoint of the strength of the first layer 110, for example, it is preferable to use mesopore diatomaceous earth having a particle size of less than 0.1 mm for the topcoat material and mesopore diatomaceous earth having a particle size of 0.1 mm or more for the undercoat material. For example, diatomaceous earth is crushed and then classified by a sieve, and the diatomaceous earth remaining on the sieve is used as an undercoat material, and the diatomaceous earth that has fallen under the sieve is used as a topcoat material.

Volcanic white clay, calcium carbonate, silica stone, etc. are used as the aggregate. The aggregate is used to increase the strength of the first layer 110. Two or more kinds of materials may be mixed.

Naturally-derived materials and organic synthetic resins are used for the glue. The glue used is one that does not block the mesopore even if it is consolidated and has durability and strength. As a naturally derived material, a thickener for food additives using starch, seaweed, cellulose and the like is used. Urethane resin or the like is used as the organic synthetic resin. Two or more kinds of materials may be mixed. From the viewpoint of environmental protection, naturally derived ones are preferable.

Fibrous materials such as cellulose fiber and natural pulp are used for the soot. The soot is used to prevent cracks in the first layer 110. Two or more kinds of materials may be mixed. From the viewpoint of environmental protection, naturally derived ones are preferable.

Boric acid is used as the anti-corruption agent. It is used to prevent spoilage when the mixture of materials of the first layer 110 is left in the form of a paste. Two or more kinds of materials may be contained. It is not necessary to use an anti-corruption agent because the mixture of the materials of the first layer 110 is not left in the form of a paste.

For each of the topcoat material and the undercoat material, 0 to 10 parts by mass of the aggregate, 5 to 15 parts by mass of the glue, 0 to 5 parts by mass of the soot, and 0 to 5 parts by mass of the anti-corruption agent with respect to 80 to 90 parts by mass of the mesopore diatomaceous earth. It is preferable to use the unit.

The topcoat material preferably has a thickness of 0.1 to 0.5 mm, the undercoat material preferably has a thickness of 0.5 to 1.5 mm, and the first layer 110 has a thickness of 0.6 to 2.0 mm. Is preferable. The topcoat material is more preferably 0.3 to 0.5 mm thick, the undercoat material is more preferably 1.0 to 1.5 mm thick, and the first layer 110 is 1.3 to 2 thick. More preferably, it is 0.0 mm. If the thickness of the first layer 110 is less than the above, it is difficult to maintain the shape of the layer, and the humidity control function may not be sufficiently exhibited. If the thickness of the first layer 110 exceeds the above range, cracks may easily occur in the first layer 110.

The second layer 120 contains a moisture-permeable porous material, and is a layer that is not easily damaged when flexed downward in a convex shape. The left-right and front-back sizes of the second layer 120 are the same as those of the first layer 110. As the porous material, various materials having moisture permeability, for example, building materials used as interior materials and base materials of buildings made of vermiculite and calcium silicate, plastics such as styrofoam, paper, wood and the like are used. To. As described above, since the second layer 120 exhibits moisture permeability, the air inside the container 1 flows through the second layer 120 to the first layer 110. As a result, the humidity control function of the first layer 110 is exerted on the air inside the container 1. It is preferable that the thickness of the second layer 120 is sufficiently small so that the humidity control function of the first layer 110 is secured, and is sufficiently large so that the strength of the entire humidity control member 100 can be secured. For example, when a building material made of vermiculite is used for the second layer 120, the upper limit of the thickness for ensuring the humidity control function of the first layer 110 is approximately 7 mm. This is because if it exceeds this, the influence of the humidity control of the first layer 110 on the internal space of the container 1 cannot be manifested within 24 hours. When a building material made of vermiculite is used for the second layer 120, the lower limit of the thickness for ensuring the strength is 6 mm. Further, the second layer 120 is adjusted to a material and size so that the entire humidity control member 100 has flexibility. As a result, the humidity control member 100 is formed so as to bend under its own weight when suspended. The degree of bending is at least the extent to which it can be visually recognized that the entire member is curved.

The humidity control member 100 is manufactured as follows. First, a second layer 120 having a predetermined size is prepared. Next, a paste of the undercoat material is prepared. Stir the mesopore diatomaceous earth, aggregate, glue, soot, and corrosion inhibitor, then add water gradually and stir further to make a paste. This paste is applied to the upper surface of the second layer 120 having a predetermined size to a predetermined thickness. Further, the paste of the topcoat material prepared in the same manner as the paste of the undercoat material is applied to the upper surface of the undercoat material so as to have a predetermined thickness. Next, in order to solidify the first layer 110, the laminate of the first layer 110 and the second layer 120 is left to dry or fired. As a result, the humidity control member 100 is completed. In the case of firing, the firing temperature is preferably 1,000 ° C. or lower in order to prevent the function of the mesopore from being destroyed by sintering.

As shown in FIG. 1, the hanging member 200 is a member for suspending the humidity control member 100 near the ceiling of the container 1. The hanging member 200 includes a first hanging member 210 and a second hanging member 220. The first hanging member 210 is a member having a mesh structure in which strings made of synthetic fibers or the like are woven in a lattice pattern. As the material of the first suspending member 210, synthetic fibers such as polyethylene, polyamide, polyester and polypropylene, natural fibers such as cotton and linen, metal fibers such as stainless steel, and glass fibers are used. The size of the first suspending member 210 is such that the humidity control member 100 can be covered in the front-rear direction, the left-right direction, and the up-down direction.

The second hanging member 220 is a string-shaped member. As the material of the second hanging member 220, synthetic fibers such as polyethylene, polyamide, polyester and polypropylene, natural fibers such as cotton and linen, metal fibers such as stainless steel, and glass fibers are used. As shown in FIG. 1, the second suspending member 220 is installed near the ceiling surface 1a so as to support the humidity control member 100 from below the first suspending member 210. The second hanging member 220 includes a string member 220a extending in the front-rear direction near the left end of the ceiling surface 1a, a string member 220b extending in the front-rear direction near the right end of the ceiling surface 1a, and a string member 220a to the string member 220b. It has a string member 220c passed in the left-right direction and a string member 220d passed diagonally in the left-right direction from the string member 220a to the string member 220b. A plurality of string members 220c are provided so as to be arranged at equal intervals in the front-rear direction. In the string member 220d, two sets of combinations of two members intersecting each other are arranged in the front-rear direction.

The method of installing the humidity control member 100 and the suspension member 200 in the container 1 will be described below. First, on the first hanging member 210 spread on the ground or the like, the humidity control members 100 are aligned in the left-right direction, and five pieces are arranged in the front-rear direction so as not to overlap each other. All surfaces of the humidity control member 100 are covered with one first suspension member 210.

Next, the humidity control member 100 covered with the first suspension member 210 is installed so that the first layer 110 faces the ceiling surface 1a. The humidity control member 100 is arranged so as to sandwich the first layer 110 between the ceiling surface 1a and the second layer 120. First, as shown in FIG. 1, the mesh structure of the first suspending member 210 is hooked on the hook 1b provided at the left end of the ceiling surface 1a and the hook 1c provided at the right end, and the humidity control member 100 is placed on the ceiling. Suspend near surface 1a. That is, the humidity control member 100 is installed in the vicinity of the ceiling surface 1a by supporting the entire lower surface including the left end portion and the right end portion by the first suspension member 210.

Next, the string member 220a is hooked on the hook 1b. Similarly, the string member 220b is hooked on the hook 1c. Next, one end of the string member 220c is fixed to the string member 220a hooked on the left end of the ceiling surface 1a, and the other end of the string member 220c is fixed to the string member 220b. A plurality of string members 220c are installed so as to be parallel to each other in the left-right direction and at equal intervals up to the vicinity of the rear end portion of the ceiling surface 1a. When installing the string member 220c, the length of the string member 220c is adjusted so that the string member 220c supports the lower surface including the left end portion and the right end portion of the humidity control member 100 supported by the first suspension member 210. ..

Next, the first string member 220d is fixed in the vicinity of the front end portion of the string member 220a and the vicinity of the intermediate portion of the string member 220b. The second string member 220d is fixed so as to intersect the first string member 220d in the vicinity of the front end portion of the string member 220b and the vicinity of the intermediate portion of the string member 220a. Next, the third string member 220d is fixed in the vicinity of the middle portion of the string member 220a and the vicinity of the rear end portion of the string member 220b. The fourth string member 220d is fixed so as to intersect the third string member 220d in the vicinity of the middle portion of the string member 220b and the vicinity of the rear end portion of the string member 220a. When installing the string member 220d, the length of the string member 220d is adjusted so that the string member 220d supports the humidity control member 100 supported by the first hanging member 210 and the string member 220c. As described above, the humidity control member 100 supported by the first suspension member 210 is installed in the vicinity of the ceiling surface 1a by supporting the lower surface including the left end portion and the right end portion by the second suspension member 220. .. The string member 220d may be fixed in the vicinity of the front end portion of the string member 220a and the vicinity of the rear end portion of the string member 220b. Similarly, the string member 220d may be fixed in the vicinity of the front end portion of the string member 220b and in the vicinity of the rear end portion of the string member 220a.

When the humidity control member 100 is installed as described above, the mesopore diatomaceous earth of the first layer 110 is used between the space inside the container 1 and the first layer 110 rather than the second layer 120 via the second layer 120. The circulation of air regulates the humidity of the space inside the second layer 120. Further, the humidity control member 100 has flexibility as described above. Therefore, by being supported by the suspending member 200 and suspended as described above, the humidity control member 100 bends downward as shown in FIGS. 1 and 2. Further, when the entire container 1 vibrates, the humidity control member 100 undergoes vibration related to the degree of bending (movement in which the bending increases and decreases repeatedly).

According to the container 1 provided with the humidity control member 100 as described above, the first layer 110 containing the mesopore diatomaceous earth having a high humidity control function contains the ceiling surface 1a of the container 1 and a porous material different from the mesopore diatomaceous earth. It is located between the two layers 120. In this way, since the second layer 120 is arranged on the inner side of the container 1 so that the first layer 110 is not directly exposed on the inner side of the container 1, at first glance, the humidity inside the container is controlled by the first layer 110. It also seems to be greatly hindered. However, the second layer 120 functions to allow air to flow between the internal space and the first layer 110. Therefore, the humidity control function by the first layer 110 is ensured. Further, since the first layer 110 is not directly exposed to the inner side of the container 1, the possibility that the first layer 110 containing mesopore diatomaceous earth comes into direct contact with an object or a person is reduced. Therefore, since the first layer 110 having the humidity control function is not easily damaged, the humidity control function of the container 1 can be maintained.

Further, the ceiling surface 1a is a place where a temperature difference is likely to occur even in the container 1, and dew condensation is likely to occur. Therefore, by providing the humidity control member 100 in the vicinity of the ceiling surface 1a, the humidity control function can be effectively exhibited. Further, in the humidity control member 100, the first layer 110 having a humidity control function faces the ceiling surface 1a side. Therefore, the humidity that causes dew condensation on the ceiling surface 1a can be effectively absorbed by the first layer 110. Further, when the cargo is loaded into the container 1, the ceiling surface 1a has a high possibility that the upper part of the cargo, the mast of the forklift, or the like approaches. On the other hand, in the humidity control member 100, the second layer 120 is arranged below the first layer 110. Therefore, it is possible to prevent the first layer 110 having a humidity control function from being damaged by contact with the cargo or the upper part of the mast of the forklift.

Further, the hanging member 200 that supports the humidity control member 100 allows the humidity control member 100 to be easily attached to and detached from the container 1. By being suspended in the vicinity of the ceiling surface 1a, the humidity control member 100 flexes downward in a convex shape as shown in FIGS. 1 and 2. This deflection causes compressive stress in the upper part of the humidity control member 100 and tensile stress in the lower part of the humidity control member 100. On the other hand, the first layer 110 is arranged at the upper part of the humidity control member 100, and the second layer 120 is arranged at the lower part. Therefore, since the first layer 110 containing the mesopore diatomaceous earth is less likely to be pulled, the generation of cracks in the first layer 110 due to the pulling is suppressed.

Further, when the vibration of the entire container 1 is transmitted to the humidity control member, if the energy of the vibration transmitted to the humidity control member 100 is distributed to the vibration of the degree of bending of the humidity control member 100, the humidity control member is correspondingly increased. Vibrations related to translation and rotational movement of 100 are suppressed. Therefore, the risk of damage or drop of the member due to vibration of the humidity control member 100 related to translation or rotation is reduced.

[First Example]
Hereinafter, examples according to the above-described embodiment will be described. In the first embodiment, the humidity control member 100 was produced under the following conditions and installed in the container 1. Container 1 used a 20-foot container.

The first layer 110 of the humidity control member 100 was prepared as follows. For the mesopore diatomaceous earth, Wakkanai diatomaceous earth calculated from the 17th river layer in Hamatombetsu-cho, Hokkaido was used. Wakkanai diatomaceous earth was crushed and classified with a 0.1 mm sieve. Wakkanai diatomaceous earth with a diameter of less than 0.1 mm was used as the topcoat material, and Wakkanai diatomaceous earth with a diameter of 0.1 mm or more was used as the undercoat material. Volcanic white clay was used for the aggregate. For the glue, a thickener for food additives, which was mainly made from starch, was used. Cellulose fiber was used for the sushi. Boric acid was used as the anti-corruption agent. As the topcoat material, 10 parts by mass of aggregate, 10 parts by mass of glue, 1 part by mass of soot, and 2 parts by mass of anti-corruption agent were used with respect to 90 parts by mass of mesopore diatomaceous earth having a diameter of less than 0.1 mm. As the undercoat material, 10 parts by mass of aggregate, 10 parts by mass of glue, 1 part by mass of soot, and 2 parts by mass of anti-corruption agent were used with respect to 90 parts by mass of mesopore diatomaceous earth having a diameter of 0.1 mm or more. For the topcoat material and the undercoat material, each material was stirred, and then water was gradually added and further stirred to make a paste.

For the second layer 120, a 6 mm flat plate of Mois (registered trademark), which is a building material containing vermiculite, was used. It was used so that the back side of the mois was the top side. As the second layer 120, five sheets having a size of 1,820 mm in the left-right direction and a size of 910 mm in the front-rear direction were used. The paste of the undercoat material was applied to the upper surface of each of the second layers 120 with a trowel so as to have a thickness of about 0.5 to 1.5 mm. Next, the paste of the topcoat material was applied to the upper surface of the paste of the undercoat material with a trowel so as to have a thickness of about 0.1 to 0.5 mm. The total thickness of the first layer 110 was about 1.5 mm. Then, the laminated body of the first layer 110 and the second layer 120 was left to dry until the first layer 110 was solidified, and the humidity control member 100 was produced.

Next, the humidity control member 100 was suspended in the vicinity of the ceiling surface 1a by using the first suspension member 210 and the second suspension member 220 made of synthetic fibers.

[Second Example]
(Comparison of moisture absorption rate and moisture absorption / desorption function due to differences in humidity control members)
In the second embodiment, the hygroscopicity and the moisture absorption / desorption function of the humidity control members 600 to 800 shown in FIGS. 3 (a) to 3 (c) were compared. The test results are shown in Table 1. The vertical and horizontal directions in FIGS. 3A to 3C are directions based on the direction in which the members are arranged at the time of the experiment. This test conformed to the "moisture absorption / desorption test method for building materials" defined by the Japanese Industrial Standards (JIS).

(Wakkanai diatomaceous earth-free humidity control member)
As shown in FIG. 3A, the humidity control member 600 composed of only the layer member 510 which is a 6 mm flat plate of Mois was covered with a seal 400 made of non-breathable aluminum tape except for the upper surface thereof. The size of the humidity control member 600 is 60 mm × 60 mm square. The upper surface of the layer member 510 is the surface of the mois. The humidity control member 600 was allowed to stand in a laboratory having a temperature of 25 ° C. and a humidity of 90% RH for 24 hours, and the hygroscopicity of the humidity control member 600 was measured. Then, the humidity control member 600 was allowed to stand at a temperature of 25 ° C. and a humidity of 50% RH for 24 hours in the same manner, and the hygroscopicity of the humidity control member 600 was measured. Next, the difference between the moisture absorption rates of 90% RH and 50% RH was obtained, and the value of the moisture absorption / desorption function of the humidity control member 600 was calculated. In addition, "RH" means relative humidity. The "moisture absorption rate" is obtained by obtaining the difference between the weight after moisture absorption and the absolute dry weight before moisture absorption, and the value when divided by the absolute dry weight is displayed as a percentage.

(Humidity control member where the layer containing Wakkanai diatomaceous earth is not exposed in the space)
As shown in FIG. 3B, the humidity control member 700 in which the layer member 520 is laminated on the lower surface of the layer member 510 is covered with a seal 400 except for the upper surface thereof. The layer member 520 corresponds to the first layer 110 of the first embodiment, and the topcoat material is laminated on the lower surface of the undercoat material, and the layer member 510 is laminated on the upper surface of the undercoat material. That is, the upper surface of the layer member 520 containing Wakkanai diatomaceous earth is covered with the layer member 510, and the other surface is covered with the seal 140. Similar to the humidity control member 600, the humidity control member 700 was allowed to stand in a laboratory at a temperature of 25 ° C. and a humidity of 90% RH for 24 hours, and the hygroscopicity of the humidity control member 700 was measured. Then, the humidity control member 700 was allowed to stand at a temperature of 25 ° C. and a humidity of 50% RH for 24 hours in the same manner, and the hygroscopicity of the humidity control member 700 was measured. Next, the difference between the moisture absorption rates of 90% RH and 50% RH was obtained, and the value of the moisture absorption / desorption function of the humidity control member 700 was calculated.

(Humidity control member where the layer containing Wakkanai diatomaceous earth is exposed in the space)
As shown in FIG. 3C, the humidity control member 800 having the same structure as the humidity control member 700 is placed on the surface corresponding to the upper surface of the humidity control member 700 (that is, on the side opposite to the layer member 520 in the layer member 510). The surface) was arranged so as to be the lower surface, and the seal 400 covered the area other than the upper surface. That is, the upper surface of the layer member 520 containing Wakkanai diatomaceous earth is exposed upward, the lower surface is covered with the layer member 510, and the other end faces are covered with the seal 400. Similar to the humidity control member 600, the humidity control member 800 was allowed to stand in a laboratory having a temperature of 25 ° C. and a humidity of 90% RH for 24 hours, and the hygroscopicity of the humidity control member 800 was measured. Then, the humidity control member 800 was allowed to stand at a temperature of 25 ° C. and a humidity of 50% RH for 24 hours in the same manner, and the hygroscopicity of the humidity control member 800 was measured. Next, the difference between the moisture absorption rates of 90% RH and 50% RH was obtained, and the value of the moisture absorption / desorption function of the humidity control member 800 was calculated.

The humidity control member 700 is an example carried out according to the embodiment of the present invention. The humidity control member 600 is a comparative example with respect to the humidity control member 700, and the humidity control member 800 is a reference example carried out in a mode different from that of the present invention.

As shown in Table 1, in the humidity control member 600, 90% RH was 3.34 wt%, 50% RH was 1.55 wt%, and the moisture absorption / desorption function was 1.79 wt%. In the humidity control member 700, 90% RH was 4.45 wt%, 50% RH was 1.91 wt%, and the moisture absorption / desorption function was 2.54 wt%. In the humidity control member 800, 90% RH was 5.34 wt%, 50% RH was 1.50 wt%, and the moisture absorption / desorption function was 3.84 wt%. Comparing the humidity control member 600 that does not contain Wakkanai diatomaceous earth and the humidity control member 700 in which the layer containing Wakkanai diatomaceous earth is not exposed in the space, 90% RH of the humidity control member 700 is about 1.33 times that of the humidity control member 600. The moisture absorption / desorption function of the humidity control member 700 was about 1.42 times that of the humidity control member 600.

[Experimental example]
(Comparison of moisture absorption rate and moisture absorption / desorption function depending on the mode of topcoat material and undercoat material)
Next, as an experimental example, the hygroscopicity and the moisture absorption / desorption function depending on the mode of the topcoat material and the undercoat material were compared. The experimental results are shown in Table 2.

(Sample 1)
Each material of the topcoat material was stirred in the same manner as in the first embodiment, and the powder was poured into a weighing bottle (inner diameter 38 mm × height 30 mm) to a height of 5 mm to prepare a sample 1. The sample 1 was allowed to stand in a laboratory having a temperature of 25 ° C. and a humidity of 90% RH for 24 hours, and the hygroscopicity of the sample 1 was measured. Then, the sample 10 was allowed to stand at a temperature of 25 ° C. and a humidity of 50% RH for 24 hours in the same manner, and the hygroscopicity of the sample 1 was measured. Next, the difference between the moisture absorption rates of 90% RH and 50% RH was obtained, and the value of the moisture absorption / desorption function of Sample 1 was calculated.

(Sample 2)
In the same manner as in the first embodiment, each material of the undercoat material was stirred, and the powder and granules were poured into a weighing bottle (inner diameter 38 mm × height 30 mm) to a height of 5 mm to prepare a sample 2. The sample 2 was allowed to stand in a laboratory having a temperature of 25 ° C. and a humidity of 90% RH for 24 hours, and the hygroscopicity of the sample 2 was measured. Then, the sample 2 was allowed to stand at a temperature of 25 ° C. and a humidity of 50% RH for 24 hours in the same manner, and the hygroscopicity of the sample 2 was measured. Next, the difference between the moisture absorption rates of 90% RH and 50% RH was obtained, and the value of the moisture absorption / desorption function of Sample 2 was calculated.

(Sample 3)
A paste of the topcoat material was prepared in the same manner as in the first embodiment, and the paste of the topcoat material was poured into a weighing bottle (inner diameter 38 mm × height 30 mm) to a height of 5 mm, dried and solidified to prepare a sample 3. The sample 3 was allowed to stand in a laboratory having a temperature of 25 ° C. and a humidity of 90% RH for 24 hours, and the hygroscopicity of the sample 3 was measured. Then, the sample 3 was allowed to stand at a temperature of 25 ° C. and a humidity of 50% RH for 24 hours in the same manner, and the hygroscopicity of the sample 3 was measured. Next, the difference between the moisture absorption rates of 90% RH and 50% RH was obtained, and the value of the moisture absorption / desorption function of Sample 3 was calculated.

(Sample 4)
A paste of the undercoat material was prepared in the same manner as in the first embodiment, and the paste of the undercoat material was poured into a weighing bottle (inner diameter 38 mm × height 30 mm) to a height of 5 mm, dried and solidified to prepare a sample 4. The sample 4 was allowed to stand in a laboratory having a temperature of 25 ° C. and a humidity of 90% RH for 24 hours, and the hygroscopicity of the sample 4 was measured. Then, the sample 4 was allowed to stand at a temperature of 25 ° C. and a humidity of 50% RH for 24 hours in the same manner, and the hygroscopicity of the sample 4 was measured. Next, the difference between the moisture absorption rates of 90% RH and 50% RH was obtained, and the value of the moisture absorption / desorption function of Sample 4 was calculated.

As shown in Table 2, in Sample 1, 90% RH was 11.92 wt%, 50% RH was 2.44 wt%, and the moisture absorption / desorption function was 9.48 wt%. In Sample 2, 90% RH was 13.72 wt%, 50% RH was 2.23 wt%, and the moisture absorption / desorption function was 11.49 wt%. In Sample 3, 90% RH was 15.71 wt%, 50% RH was 1.81 wt%, and the moisture absorption / desorption function was 13.90 wt%. In Sample 4, 90% RH was 14.95 wt%, 50% RH was 1.99 wt%, and the moisture absorption / desorption function was 12.96 wt%. Comparing sample 1 of the powdery and granular topcoat material with sample 3 of the solidified topcoat material, 90% RH of sample 3 is about 1.32 times that of sample 1, and the moisture absorption / desorption function of sample 3 is about that of sample 1. It increased 1.47 times. Comparing the powdery and granular undercoat material sample 2 with the solidified undercoat material sample 4, 90% RHS of the sample 4 is about 1.09 times that of the sample 2, and the moisture absorption / desorption function of the sample 4 is the sample 2. It was about 1.13 times that of. That is, the solidified coating material had a higher hygroscopicity and moisture absorption / desorption function than the powdery and granular coating material. This indicates that there is no functional deterioration due to solidification using glue, and that the glue does not reduce the function of mesopore diatomaceous earth.

Although the embodiments of the present invention have been described above with reference to the drawings, it should be considered that the specific configuration is not limited to these embodiments. The scope of the present invention is shown not only by the description of the above-described embodiment but also by the scope of claims, and further includes all modifications within the meaning and scope equivalent to the scope of claims. Hereinafter, a modified example according to the above-described embodiment will be described. Further, the same reference numerals as those described above are used for the parts common to the above-described embodiments, and the description thereof will be omitted as appropriate.

In the above-described embodiment, the topcoat material and the undercoat material are used. However, only one of them may be used. Further, the crushed mesopore diatomaceous earth may be used for the first layer without classification.

In the above-described embodiment, the first layer 110 is a paste-like material applied to the second layer 120. However, a plate-like material containing the material of the first layer 110 or a packaged powdery material may be used as the first layer.

In the above-described embodiment, the humidity control member 100 is suspended in the vicinity of the ceiling surface 1a of the container 1. However, the humidity control member 100 may be attached to the ceiling surface 1a. Further, the humidity control member 100 may be arranged so as to be located near other surfaces in the container 1, such as the left and right side surfaces inside the container 1, or may be attached to other surfaces, even if the humidity control member 100 is not the ceiling surface 1a. You may be doing it. When the humidity control member 100 is arranged so as to be located in the vicinity of the other surface in the container 1 or is attached to the other surface, the first layer 110 is attached to the other surface with respect to the second layer 120. The humidity control member 100 is installed so as to be arranged on the side close to the container 1 and the second layer 120 is exposed inside the container 1. As a result, even if a worker, cargo, or the like comes into contact with the humidity control member 100, the first layer 110 is less likely to be damaged.

In the above-described embodiment, five humidity control members 100 are used. However, a humidity control member having a size that can substantially cover the ceiling surface 1a with one sheet may be used.

In the above-described embodiment, the humidity control member 100 is a size obtained by dividing a size one size smaller than the size in the front-rear direction on the ceiling surface 1a. However, the humidity control member has a size divided into a plurality of sizes that are one size smaller than the size in the left-right direction on the ceiling surface 1a, and the humidity control members may be used side by side in the left-right direction. Further, the humidity control members may have a size that can be used side by side in the front-rear direction and the left-right direction of the ceiling surface 1a.

In the above-described embodiment, the humidity control member 100 is used so as to have a size that substantially covers the ceiling surface 1a. However, the size of one or a plurality of humidity control members arranged side by side may be smaller than the ceiling surface 1a.

In the above-described embodiment, a plurality of humidity control members 100 are arranged side by side and covered with one first suspension member 210. However, each humidity control member 100 may be covered with the first suspension member 210 and suspended.

In the above-described embodiment, the first suspension member 210 and the second suspension member 220 are used. However, only one of them may be used.

In the above-described embodiment, the mesh structure of the first hanging member 210 is hooked on the hooks 1b and 1c of the ceiling surface 1a. However, by using a humidity control member with holes at the left and right ends, or by providing a connecting member with holes at the left and right ends of the humidity control member, the holes are hooked on the ceiling surface 1a. It may be hooked on 1b and 1c.

1 Container 1a Ceiling surface 100 Humidity control member 110 First layer 120 Second layer 200 Suspension member 210 First suspension member 220 Second suspension member

Claims (5)

A container equipped with a humidity control member placed near the inner wall surface.
The humidity control member is laminated on the first layer containing mesoporous silica, contains a porous material different from mesoporous silica, and is arranged at a position where the first layer is sandwiched between the inner wall surface and the first layer. It is equipped with a second layer that has been made.
Air flows between the inner space and the first layer through the second layer so that the space inside the second layer is regulated by the mesoporous silica of the first layer. Characterized container. The container according to claim 1, wherein the inner wall surface is a ceiling surface. The container according to claim 2, wherein the humidity control member is suspended in the vicinity of the ceiling surface by a suspension member that supports at least one end of the humidity control member and the other end thereof. The humidity control member is bent,
The container according to claim 3, wherein the vibration of the entire container causes vibration related to the degree of bending of the humidity control member. A humidity control device placed near the inner wall surface of the container.
A first layer containing mesoporous silica and a second layer laminated on the first layer, containing a porous material different from mesoporous silica, and arranged at a position sandwiching the first layer between the inner wall surface and the inner wall surface. Equipped with
Air flows between the inner space and the first layer through the second layer so that the space inside the container is more regulated by the mesoporous silica of the first layer than the second layer. Humidity control device characterized by doing.

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