JP6903745B2 - Dehumidifying pack - Google Patents

Description

The present invention is installed in a humid place such as a closet, a chest of drawers, a closet, a shoe rack, a washbasin, under a sink, and a clothes storage container (clothing case), and is used for dehumidifying and drying clothes and futons. Regarding dehumidifying packs.

Conventionally, as this type of dehumidifying pack, there is a sheet-type dehumidifying agent in which a hygroscopic agent is sealed in a bag made of a moisture-permeable film (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 05-068843

However, in the case of such a conventional sheet-type dehumidifying agent, the bottom surface of the sheet-shaped bag generally comes into contact with the mounting surface of the installation location when it is set in the installation location such as a closet or closet. , About half of the moisture absorption area in the sheet-shaped bag is blocked.
As a result, the hygroscopic function is halved as compared with the case where the entire sheet-shaped bag body absorbs moisture, the hygroscopic rate is reduced by that amount, and there is a problem that it takes time to reliably dehumidify a humid environment.

In order to solve such a problem, the dehumidifying pack according to the present invention is placed on a mounting surface of a humid installation place including a push-in, a tongue, a closet, a clog box, a washbasin, a sink, and a clothing storage container. It is a dehumidifying pack that removes moisture from the space of the installation location, and includes a bag body formed into a tetrahedron with a moisture-permeable waterproof sheet and a hygroscopic agent sealed inside the bag body. The bag body is formed in a three-dimensional shape having four flat surfaces and an extension portion continuously formed on at least one side of the four flat surfaces, and any one of the four flat surfaces is in front of the installation location. The bottom surface is in contact with the described surface, and the bottom surface is placed on the previously described surface and the extension portion is in contact with the previously described surface, and the other three flat surfaces other than the bottom surface are the spaces of the installation location. It becomes a moisture absorbing surface that absorbs moisture from the space facing the space, and is characterized by blending the moisture absorbing agent with a material that gels as it absorbs moisture.

It is explanatory drawing which shows the whole structure of the dehumidifying pack which concerns on embodiment of this invention, (a) is the perspective view seen from the front side, (b) is the perspective view seen from the bottom side. It is explanatory drawing which shows the modification of the dehumidifying pack which concerns on embodiment of this invention, and is the perspective view seen from the front side.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 and 2, the dehumidifying pack A according to the embodiment of the present invention has a high humidity such as a closet, a closet, a closet, a shoe rack, a wash basin, a sink, and a clothing storage container (clothing case). It is a dehumidifying agent that removes moisture from the space S of the installation location by placing it on the mounting surface P of the installation location.
Before such moisture removal, the dehumidifying pack A is housed in an outer bag (not shown) in a sealed state to prevent unnecessary moisture absorption.
More specifically, the dehumidifying pack A according to the embodiment of the present invention includes a bag body 1 made of a moisture permeable and waterproof sheet and a hygroscopic agent 2 sealed inside the bag body 1 as main components. There is.

The bag body 1 is made of a moisture-permeable waterproof sheet or a moisture-permeable film having minute ventilation holes (not shown) of several microns, and has a structure that allows moisture to pass through the minute ventilation holes but does not allow liquid to pass through. ..
Specific examples of the moisture-permeable waterproof sheet and the moisture-permeable film include a microporous film produced by stretching polyethylene containing calcium carbonate, polypropylene, etc., Tyvek (registered trademark) manufactured by DuPont, and NF manufactured by Tokuyama Corporation. It is preferable to use a sheet or the like.
Further, the bag body 1 is formed in a three-dimensional shape having a plurality of (two or more) flat surface portions 10.
Examples of the three-dimensional shape include a cube surrounded by a plurality of polygons, a rectangular parallelepiped, a tetrahedron, a polyhedron including a prism, a pyramid, a pyramid, and a cylinder, or a shape similar thereto.
Among these, a polyhedron surrounded by four or more plane portions 10 is preferable. This polyhedron also includes a quasi-regular polyhedron composed of two or more types of regular polygons and a semi-regular polyhedron other than the regular polyhedron among convex uniform polyhedrons. Specifically, it is preferable to form the bag body 1 into a polyhedron such as a tetrahedron or a hexahedron.
Further, the bag body 1 has a bottom surface 10a in which any one of the plurality of flat surfaces 10 is in contact with the mounting surface P of the installation location in the used state, and the other of the plurality of flat surfaces 10 faces the space S of the installation location. It is configured to be a moisture absorbing surface 10b.
Further, it is preferable to continuously form an extension portion 11a facing the mounting surface P on at least one side of the plurality of flat surface portions 10.

When shown in FIGS. 1 (a) and 1 (b) as a specific example of the bag body 1, it is formed into a tetrahedron (a regular tetrahedron in the illustrated example).
Specifically, the first tubular sheet 11 is used as the moisture-permeable waterproof sheet or the moisture-permeable film. In the first tubular sheet 11, both ends in the axial direction at predetermined intervals are sealed with a first horizontal seal portion that becomes a pair of extension portions 11a, so that the inside of the bag body 1 is first. The accommodating portion 21 is formed. The extension portion (first lateral seal portion) 11a is formed in a band shape in a direction intersecting the axial direction of the first tubular sheet 11 and with the two relatively orthogonal to each other, and both ends in the axial direction are formed. Overlay and glue.
Therefore, the inside of the bag body 1 (first accommodating portion 21) has a filling space for accommodating the hygroscopic agent 2 described later and a water accommodating space for accommodating the moisture absorbed by the hygroscopic agent 2. There is.
With such a configuration, a tetrahedral (tetrahedral) container such as Tetra Pak (registered trademark) is created as the bag 1.
In the illustrated example, as the first tubular sheet 11, a sheet in which both ends in the width direction of the sheet body are sealed with vertical sealing portions 11b is used.

Further, as shown in FIG. 2 as another modification, the bag body 1 can be changed to a hexahedron (a regular hexahedron in the illustrated example).
In the illustrated example, a second tubular sheet 12 having a rectangular cross section (a rectangle and a quadrilateral having a right angle including a square) is used as the moisture permeable waterproof sheet or the moisture permeable film. By sealing both ends of the second tubular sheet 12 in the axial direction at predetermined intervals with a pair of second horizontal seal portions 12a, the second accommodating portion 22 is formed inside the bag body 1. It is formed. The second lateral seal portion 12a is formed in a strip shape in a direction intersecting the axial direction of the second tubular sheet 12, and both ends in the axial direction are overlapped and adhered.
Therefore, the inside of the bag body 1 (second accommodating portion 22) has a filling space for accommodating the hygroscopic agent 2 described later and a water accommodating space for accommodating the moisture absorbed by the hygroscopic agent 2. There is.
With such a configuration, substantially triangular flaps 13 are formed at both ends of the pair of second horizontal seal portions 12a, and the flaps 13 are adhered to the surface of the bag body 1 to form a brick (hexahedron or regular hexahedron). Container is created.
In the illustrated example, the second tubular sheet 12 without a vertical seal is used.
Although not shown as a modification of the bag body 1, the first tubular sheet 11 shown in FIGS. 1A and 1B can be changed to one without a vertical seal, and the second tubular sheet 11 shown in FIG. 2 can be changed. It is also possible to change the tubular sheet 12 of the above to one having a vertical seal.

As the hygroscopic agent 2 sealed in the bag body 1, it is preferable to use a deliquescent substance in which the crystalline solid absorbs and dissolves water vapor and water that become moisture. Specific examples of the deliquescent substance include calcium chloride, magnesium chloride, lithium chloride, lithium bromide, potassium acetate, sodium phosphate, sodium ultraphosphate and the like. Among them, calcium chloride and magnesium chloride are preferable from the viewpoint of hygroscopic capacity and price. It is also possible to use one or a mixture of two or more of these.
When a deliquescent substance such as calcium chloride is used as the hygroscopic agent 2, the deliquescent liquid liquefied due to the hygroscopicity may leak from the bag body 1 and contaminate the futon or clothes.
Therefore, it is necessary to add a thickener (gelling agent) to the deliquescent substance to gel the deliquescent solution and reduce the fluidity so that the deliquescent solution does not separate from water.
That is, as the hygroscopic agent 2, it is preferable to use a material in which powdery granular crystalline solid gels as it absorbs moisture.
Examples of the thickener (gelling agent) include pregelatinized starch (pregelatinized starch), sodium polyacrylate, polyvinyl alcohol, polyacrylamide, methyl cellulose, guar gum and the like.

As a specific example of the hygroscopic agent 2, it is preferable to mix 30 to 70% by weight of pregelatinized starch with respect to 100% by weight of calcium chloride.
If the blending amount of pregelatinized starch with respect to 100% by weight of calcium chloride is less than 30% by weight, the deliquescent solution starts to separate from water, which is not preferable.
If the blending amount of the alfarated starch is larger than necessary, the blending ratio of the main calcium chloride will be reduced accordingly. If the blending amount of pregelatinized starch with respect to 100% by weight of calcium chloride exceeds 70% by weight, the desired hygroscopic function cannot be obtained.
Therefore, in the limited volume in the bag body 1, the starch crosslinked in addition to the pregelatinization so that the water separation performance can be exhibited without taking up the volume with the high-density pregelatinized starch and without blending a large amount. Is preferably used.
Further, the deliquescent substance such as calcium chloride tends to gradually decrease the moisture absorption rate due to the decrease in the concentration accompanying the moisture absorption. However, by allowing the pregelatinized starch to absorb calcium chloride and swelling the pregelatinized starch, the moisture-permeable waterproof sheet of the bag 1 and the calcium chloride are brought closer to each other, which also has the effect of suppressing a decrease in the moisture absorption rate. ..

On the other hand, it is preferable that the bag body 1 is provided with means 3 for visualizing the state of the hygroscopic agent 2 which is the contents thereof from the outside.
In the case shown in FIG. 1A as a specific example of the visualization means 3, a strip-shaped window 31 or a plurality of windows 32 made of a transparent or translucent sheet or film is provided on a part of the bag body 1 and colored alpha. By swelling the starched starch with moisture absorption, the moisture absorption state can be visually confirmed through the band-shaped window 31 and the plurality of windows 32. As a result, it is convenient because the user can easily know the life of the hygroscopic agent 2.
Further, although not shown as another example, the shapes and arrangements of the strip-shaped window 31 and the plurality of windows 32 may be changed to other than those shown in the illustrated example, or almost the entire bag body 1 may be transparent or translucent. It is also possible to provide the visualization means 3 in the one shown in the above, to configure the visualization means 3 with a structure different from the illustrated example, or to configure the bag body 1 without the visualization means 3.

Then, the result of the experiment about the dehumidifying function of the dehumidifying pack A according to the embodiment of the present invention will be described.
In addition to the tetra-shaped (tetrahedral) dehumidifying pack A shown in FIGS. 1 (a) and 1 (b), a sheet-type dehumidifying agent and a tank-type dehumidifying agent were prepared, and a moisture absorption test was conducted under the same conditions. .. The sheet-type dehumidifying agent is as described in Japanese Patent Application Laid-Open No. 05-068843. The tank-type dehumidifying agent has a conventionally well-known structure in which the hygroscopic agent is stored in a tank-shaped container.
In the moisture absorption test, the total volumes of the dehumidifying agents contained in the dehumidifying pack A, the sheet type dehumidifying agent, and the tank type dehumidifying agent are substantially the same.
Furthermore, in accordance with JIS S3106-1994 7.8, in an environment of temperature and humidity (temperature 25 ° C x humidity 80%) assuming the usage environment, the elapsed time until each moisture absorption reaches the target value (50 mL) is measured. A moisture absorption test was conducted.
According to the results of the moisture absorption test, the 50 mL reaching speed of the tetra-shaped dehumidifying pack A is about 1.5 times faster than the 50 mL reaching speed of the sheet type dehumidifying agent, and about 2. It was demonstrated to be 5 to 2.6 times faster.

By the way, the encapsulation amount of the hygroscopic agent 2 with respect to the internal volume of the bag body 1 (capacity of the first accommodating portion 21 and the second accommodating portion 22) is set according to the temperature / humidity of the installation location and the moisture absorption rate by the hygroscopic agent 2. Will be done.
The reason is that when the hygroscopic agent 2 with a high hygroscopic rate is used in a particularly humid environment or a high temperature and high humidity environment, it absorbs moisture at once, so that the moisture absorbed by the hygroscopic agent 2 fills the water storage space in a short period of time. After that, it becomes impossible to absorb moisture. A particularly humid environment includes places such as around a washbasin and under a sink, and a hot and humid environment is a hot and humid area such as Hong Kong, which is hotter and more humid than in Japan.
Especially when used in a humid environment or a hot and humid environment, the amount of hygroscopic agent 2 enclosed is compared to when used in closets, closets, shoe racks, clothing storage containers (clothing cases), etc. in Japan. It is necessary to change the volume ratio of the water storage space and the filling space of the hygroscopic agent 2 so as to reduce the amount of water.
Therefore, it is preferable to set the volume of the water storage space to be a predetermined multiple of the volume of the filling space of the hygroscopic agent 2.

As a specific example of the encapsulation amount of the hygroscopic agent 2, the bag body 1 has a tetrahedron shape (tetrahedron) shown in FIGS. 1 (a) and 1 (b), and the hygroscopic agent 2 is mainly composed of a deliquescent substance (calcium chloride). The case where becomes will be described.
In Japan, the maximum amount of moisture absorbed by household dehumidifiers that use calcium chloride for the purpose of dehumidifying in relatively narrow spaces such as closets and tons of ordinary households is set by JIS at a standard temperature of 25 ° C and a standard humidity of 80%. Has been done.
In this standard environment (temperature 25 ° C., humidity 80%), the volume of the water storage space is set to about twice the volume of the filling space. That is, the volume ratio between the water storage space and the filling space is set to about 2: 1.
One side with 7cm in bag 1 tetra shape, when the internal volume of the bag body 1 is about 40.4 cm ³ is about the volume of the water containing space 26.93Cm ^3, about 13.46Cm ³ the volume of the filling space To do. This corresponds to a filling amount of a deliquescent substance (calcium chloride) of about 14.6 g.
On the other hand, when used in a particularly humid place such as around a washbasin or under a sink, or in a hot and humid area such as Hong Kong, the volume of the water storage space is about 2.2 times or more the volume of the filling space. , Preferably set to about 2.5 times or more.
When the side of the tetra-shaped bag 1 is 7 cm and the internal volume of the bag 1 is about 40.4 cm ³ , the volume of the water storage space is set to about 27.8 cm ³ or more, preferably about 28.9 cm ³ or more. The volume of the filling space is about 12.6 cm ³ , preferably about 11.5 cm ³ . This corresponds to a filling amount of a deliquescent substance (calcium chloride) of about 13.0 g, preferably about 11.7 cm ³ .

According to the dehumidifying pack A according to the embodiment of the present invention, any one of the plurality of flat surfaces 10 of the bag body 1 formed in a three-dimensional shape with respect to the mounting surface P of the installation location in the used state. The bottom surface 10a is placed, and the bottom surface 10a is brought into contact with the mounting surface P. As a result, the moisture absorbing surface 10b, which is the other flat surface portion 10, absorbs moisture toward the space S of the installation location, and the installation location is dehumidified.
Further, even if the bag body 1 rolls, only one of the plurality of flat surface portions 10 becomes the bottom surface 10a, and the other moisture absorbing surface 10b does not come into contact with the mounting surface P, and the moisture absorbing area does not decrease.
Therefore, the hygroscopic area can be increased with a simple structure.
As a result, as compared with the conventional sheet type dehumidifying agent, the moisture absorption rate becomes faster, the humid environment can be dehumidified in a short time, and the dehumidifying function can be improved. Further, since the dehumidifying function is not deteriorated by the rolling of the bag body 1, it is not necessary to consider the posture and the usability is good.
Furthermore, compared to conventional sheet-type dehumidifiers, the overall size is compact and the occupied space is small, so it can be placed anywhere, such as in a relatively narrow installation location. A large number of dehumidifying packs A can be placed in the installation location where one sheet type dehumidifying agent is placed to further improve the dehumidifying function.

In particular, the bag body 1 is preferably formed as a polyhedron surrounded by four or more polygons as a plurality of flat surface portions 10.
In this case, in the polyhedral bag 1, one of the four or more polygons has a flat surface 10a, and the other three or more flat surfaces 10 have a moisture absorbing surface 10b.
Therefore, the number of hygroscopic surfaces 10b three-dimensionally arranged with respect to the mounting surface P can be increased to three or more.
As a result, as compared with the conventional sheet type dehumidifying agent, the hygroscopic area increases with the increase of the hygroscopic surface 10b, so that the hygroscopic rate can be increased and the dehumidifying function can be further improved.

Further, it is preferable to form the bag body 1 into the tetrahedron shown in FIGS. 1 (a) and 1 (b) (regular tetrahedron in the illustrated example) or the hexahedron shown in FIG. 2 (regular hexahedron in the illustrated example).
When the bag body 1 is a tetrahedron, one of the four flat surfaces 10 is the bottom surface 10a, and the other three flat surfaces 10 are the moisture absorbing surfaces 10b.
When the bag body 1 is a hexahedron, one of the six flat surfaces 10 is the bottom surface 10a, and the other five flat surfaces 10 are the moisture absorbing surfaces 10b.
Therefore, the bag body 1 can be easily manufactured by using a conventionally known manufacturing apparatus.
As a result, the bag body 1 can be easily mass-produced, and the cost can be reduced.

Further, it is preferable to continuously form the extension portion 11a facing the mounting surface P on at least one side of the plurality of flat surface portions 10.
In this case, by placing the bottom surface 10a of any one of the plurality of flat surfaces 10 of the bag body 1 formed in a three-dimensional shape on the mounting surface P of the installation location in the used state, the bottom surface 10a is continuous with the bottom surface 10a. The extension portion 11a is also in contact with the mounting surface P.
Therefore, the installation area of the bag 1 with respect to the mounting surface P is increased by the amount of the extension portion 11a, and at the same time, the frictional resistance with the mounting surface P is also increased.
Therefore, it is possible to suppress rolling and misalignment of the placed bag body 1.
As a result, the posture of the placed bag 1 is more stable, and the dehumidifying function can be further improved.

Furthermore, it is preferable that the hygroscopic agent 2 is made of a material that gels as it absorbs moisture.
In this case, the hygroscopic agent 2 in the bag 1 absorbs moisture, so that the form of the hygroscopic agent 2 changes to a gel state and the water does not separate from the hygroscopic agent 2.
Therefore, it is possible to prevent the liquid from leaking due to the hygroscopicity of the hygroscopic agent 2.
As a result, it can be used safely in various installation locations because it is not contaminated by the leaked liquid. In addition to this, after the hygroscopic agent 2 has completed moisture absorption, it can be discarded as it is without taking out the hygroscopic agent 2 from the bag body 1, and the usability can be further improved.
Further, by confirming whether or not the form of the hygroscopic agent 2 is gelled, the life of the hygroscopic agent 2 can be estimated, and anyone can easily know when to replace the hygroscopic agent 2, which is excellent in usability.

Furthermore, the inside of the bag 1 has a filling space for the hygroscopic agent 2 and a water storage space for accommodating the moisture absorbed by the hygroscopic agent 2, and the volume of the water accommodating space is the filling space for the hygroscopic agent 2. It is preferable to set it to be a predetermined multiple of the volume of.
Even when the dehumidifying pack A is installed in a particularly humid place such as around a washbasin or under a sink, or in a hot and humid area such as Hong Kong, the volume of the water storage space is used as a hygroscopic agent ( By setting the volume of the filling space of (calcium chloride) 2 to about 2.2 times or more (preferably about 2.5 times or more), the water absorbed by the hygroscopic agent 2 fills the water storage space in a short period of time. Never.
Therefore, even if it is used in a particularly humid place or a hot and humid area, it can continue to absorb moisture for a predetermined period of time.
As a result, it can be adjusted to the temperature and humidity used, and is excellent in usability.

In the illustrated example, only the case of a dodecahedron and a hexahedron is shown as the three-dimensional shape of the bag body 1, but the three-dimensional shape of the bag body 1 is not limited to this, and the three-dimensional shape of the bag body 1 is a columnar body or a prismatic body. , Pyramids, pyramids, octahedrons, dodecahedrons, dodecahedrons and other quasi-regular polyhedrons or archimedean solids including semi-regular polyhedrons.

A Dehumidifying pack 1 Bag body 10 Flat surface 10a Bottom surface 10b Hygroscopic surface 11a Extension 2 Hygroscopic agent P Placement surface S Space

Claims (2)

A dehumidifying pack that is placed on the mounting surface of a humid installation location, including a closet, chest of drawers, closet, shoe rack, wash basin, under a sink, and a clothing storage container, and removes moisture from the space of the installation location.
A bag body formed into a tetrahedron with a moisture-permeable and waterproof sheet,
A hygroscopic agent sealed inside the bag body is provided.
The bag body is formed in a three-dimensional shape having four flat surfaces and an extension portion continuously formed on at least one side of the four flat surfaces, and any one of the four flat surfaces is the installation location. The bottom surface is in contact with the above-mentioned mounting surface, and the bottom surface is placed on the above-mentioned mounting surface and the extension portion is in contact with the above-mentioned mounting surface. It becomes a moisture absorbing surface that faces the space and absorbs moisture from the space.
Wherein the desiccant dehumidification pack, characterized in that blended material that gels with the moisture. The inside of the bag has a space for filling the hygroscopic agent and a water storage space for accommodating the moisture absorbed by the hygroscopic agent, and the volume of the water storage space is the volume of the space for filling the hygroscopic agent. The dehumidifying pack according to claim 1, wherein the dehumidifying pack is set to be a predetermined multiple of.

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