JPH06142436A - Moisture absorbing material and production of the same - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the product falls over during use, the water inside the outer container will not spill, and the interior of furniture, closets, storage, etc. will not get wet, and it will be designed in various shapes, not just circular. And a method for manufacturing the same. [Structure] The hygroscopic material 1 is composed of an inner container 2 which accommodates therein a hygroscopic agent which absorbs water in the air and deliquesces, and an outer container 3 which holds the inner container 2 and has an upper surface opening. The inner container 2 of the hygroscopic material 1 has a ring-shaped holding frame member 4 whose upper surface is sealed with a microporous film, and whose lower surface is a porous bag 9 containing a hygroscopic agent 8.
And a double bag of a hermetically sealed bag 10 which is located outside the container and stores water generated by the deliquescent of the hygroscopic agent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hygroscopic material which is placed inside furniture, a closet, a storage cabinet or the like to remove the moisture inside and reduce the influence of the moisture of the articles stored inside.

[0002]

2. Description of the Related Art Heretofore, this type of hygroscopic material has a basket-type middle container containing a moisture absorbent that absorbs moisture in the air and deliquesces, and its upper surface is sealed with a microporous film. The one stored on an outer container which also functions as a water storage container for storing water generated by deliquescence has been used. Then, when the ability of the hygroscopic agent to absorb the moisture is lost, the water content in the outer container is discarded, and the inner container containing the new hygroscopic agent is placed on the outer container for replacement. It was a thing.

[0003]

Such a conventional hygroscopic material is simply placed on the outer container for replacement use, and therefore, when it is tumbled, There is a drawback in that the water in the container is spilled and, conversely, the interior of furniture, closets, storages, etc. is wetted. In order to solve this, there is one in which an outer container and an inner container are screwed together, but this not only limits the container shape to a circle and limits the freedom of container design, but in general, this type of Since the moisture absorbent is placed at the corners of furniture, closets, storages, etc., it cannot be placed efficiently.

Therefore, the present invention is designed so that even if it falls over during use, the moisture in the outer container will not be spilled, the interior of furniture, closets, storages, etc. will not be wetted, and various shapes as well as circular shapes can be taken. The object is to provide a hygroscopic material having a high degree of freedom.

[0005]

In view of the above points, the present invention has an inner container for accommodating therein a moisture absorbent that absorbs moisture in the air and deliquesces, and an upper surface for mounting and accommodating the inner container. In a hygroscopic material composed of an outer container with an opening, the inner container is a porous bag for sealing the upper surface of a ring-shaped holding frame member with a microporous film and the lower surface for accommodating a hygroscopic agent, and the bag is outside thereof A hygroscopic material sealed in a double bag with a hermetically-sealing bag that stores the water generated by the deliquescent of the hygroscopic agent,

[0006] Further, a hygroscopic material composed of an inner container for accommodating a hygroscopic agent which absorbs moisture in the air and deliquesces therein, and an outer container having an upper surface opening for holding the inner container, wherein the inner container is annular. Of the holding frame member of a porous bag for sealing the upper surface of the holding frame member with a microporous film and for storing the lower surface of the hygroscopic agent, and a hermetically-sealed bag for storing water generated outside due to deliquescent of the hygroscopic agent. In the method for manufacturing a moisture absorbent material sealed with a double bag, the inner container is a cylindrical bag having one end opening, and the other end is sealed, and a hole having a diameter of 0.1 to 2.0 mm is formed on the sealed end side of the bag. Perforating step, folding and expanding the open end of the bag until the open end is located below the sealed end, and fixing the open end and the annular holding frame member, and welding the open end. Sealing process to form a double bag consisting of a porous bag and a hermetically sealed bag. Method for producing a microporous film sealing process hygroscopic material produced from the upper surface of the holding frame member put moisture absorbent in a porous bag from the surface to seal in the microporous film,

Alternatively, the upper surface of the ring-shaped holding frame member is sealed with a microporous film, and the lower surface has a porous bag for storing a moisture absorbent that absorbs moisture in the air and deliquesces, and the outside of the bag. A method for producing a hygroscopic material comprising an inner container sealed with a double bag having a hermetically sealed bag for storing water generated by deliquescence, and an outer container having an upper surface opening for holding the inner container, wherein: 0.1 to 2.0 mm for holding frame member
A porous bag having a plurality of holes of the same diameter is fixed, and a bag having a sealing property larger than the porous bag is fixed to the outside of the bag to form a double bag, and then a porous bag is formed from the upper surface of the holding frame member. This is a method for producing a hygroscopic material produced by placing a hygroscopic agent in a bag and sealing the upper surface of the holding frame member with a microporous film.

[0008]

In the moisture absorbent of the present invention, the upper surface of the annular holding frame member of the middle container is sealed with the microporous film and the lower surface is sealed with the double bag of the porous bag and the hermetically sealed bag. The water generated when the agent deliquesce is trapped in a hermetically sealed bag and does not leak from the upper surface or the lower surface of the holding frame member.Therefore, even if the outer container falls, the water inside leaks to the outside. hand,
Do not ruin the environment of the storage materials such as surrounding furniture and clothing. Moreover, instead of the conventional basket-type middle container, it is a bag-shaped bag made of film, so it is possible to reduce the amount of raw materials used, thus reducing costs and the impact of plastics on the natural environment. In addition to being bulky, it can be folded at the time of disposal after use, so it is not bulky as a whole and is convenient in handling.

[0009] In particular, by disposing a resin having a high water vapor barrier property on the upper surface of the airtight bag or the microporous film, it is possible to prevent moisture absorption when not in use. The packaging can be omitted.

In the manufacturing method of the present invention, the inner container is a cylindrical bag having an opening at one end, and the other end is hermetically sealed, and a hole having a diameter of 0.1 to 2.0 mm is provided on the sealed end side of the bag. Perforating process,
A fixing step of folding back and expanding the opening end of the bag until the opening end is located below the sealed end, and fixing the folded back end and the annular holding frame member, a porous bag by welding the opening end. And a sealing process to form a double bag of a hermetically sealed bag, a microporous film in which a hygroscopic agent is put into the porous bag from the upper surface of the holding frame member and the upper surface of the holding frame member is sealed with a microporous film. A method for manufacturing the above-mentioned moisture absorbent by a film sealing step, or an inner container is fixed to a holding frame member with a porous bag having a plurality of holes having a diameter of 0.1 to 2.0 mm, and the porous bag is provided outside thereof. A double bag is formed by fixing a bag that has a larger sealing capacity than the bag, and then a hygroscopic agent is placed in the bag that is more porous than the upper surface of the holding frame member and the upper surface of the holding frame member is sealed with a microporous film. Therefore, the hygroscopic material of the present invention can be manufactured very easily and easily. It is what it is.

The outer container of the present invention does not have to function as a water container for storing water generated by deliquescence as in the conventional case, and therefore, if it has a function of supporting the middle container as a function. Often, the term refers to a member for accommodating, holding or suspending a medium container such as a storage container made of plastic or paper or a support member made of plastic, metal or other material.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the moisture absorbent material of the present invention will be described with reference to the drawings. The hygroscopic material 1 is composed of an inner container 2 and an outer container 3 having an upper surface opening on which the inner container 2 is placed and accommodated. The middle container 2 includes an annular holding frame member 4, a microporous film 5 for sealing the upper surface thereof, a steam barrier film 6 mainly for a steam barrier plastic for sealing the upper surface thereof, and a lower surface of the holding frame member 4. It has a double bag portion 7 for covering. The double bag portion 7 has a porous bag 9 that houses therein a moisture absorbent 8 that absorbs moisture in the air and deliquesces, and is generated outside the porous bag 9 due to deliquescent of the moisture absorbent 8. It is composed of a hermetically sealed bag 10 for storing the moisture. The porous bag 9 has a hole having a diameter of 0.1 to 2.0 mm, and the hermetically sealed bag 10 is made of plastic having a water vapor barrier property. The pores formed in the porous bag 9 must be smaller than the particle size of the moisture absorbent 8 stored inside.
Holes in the range of 0.1-2.0 mm can be used depending on the particle size of the.

The microporous film 5 is 0.1 to 10 μm obtained by physically or chemically treating a polyolefin resin such as high-density polyethylene, medium-low density polyethylene or polypropylene, polyamide resin, polyvinyl chloride resin or the like.
It means that a minute hole of m is formed. Since the microporous film 4 has minute pores of 0.1 to 10 μm, moisture cannot pass even if air passes, and the moisture absorbent 8
When absorbs moisture in the air to generate water, the water can no longer pass through the microporous film 5 and is sealed in the inner container 2.

The above-mentioned water vapor barrier plastic has a water vapor transmission rate (JIS-Z-0208) of 50 g / m ² /
A plastic consisting of a resin of 24 hours or less, for example, high-density, medium-density or low-density polyethylene, vinyl acetate, acrylate, or α-olefins such as butene, hexene, and 4-methyl-1pentene are copolymerized. Polyethylene, ionomer resin, polypropylene homopolymer, polypropylene graft-polymerized with ethylene, or ethylene, butene, hexene,
Polypropylene copolymerized with α-olefins such as 4-methyl-1 pentene, those generally called polyolefin resins such as poly-1-butene, poly 4-methyl-1-pentene or polyvinylidene chloride resin, polyester resin and those It is composed of a modified product or mixture thereof. Water vapor barrier film 6 and double bag portion 7
Is preferably a laminated structure of the above-mentioned water vapor barrier plastic layer and another plastic. In particular, since the hygroscopic agent 8 accommodated inside has a shape having sharp corners, the double bag portion 7 has a laminated structure with polyamide resin or polyester resin having high puncture resistance, Generation of pinholes can be prevented. Further, the water vapor barrier film 6 has a surface on the sealing side which has an easy-opening function, for example, a blend of different kinds of polyolefin resins such as high density polyethylene and polypropylene to slightly reduce the compatibility of the resin itself. By using a laminated structure using, the peeling property at the seal interface can be improved, and a product having a high commercial value can be easily peeled off during use.

The hygroscopic agent 8 is a deliquescent substance such as calcium chloride, magnesium chloride or lithium chloride, and calcium chloride is particularly preferable in terms of hygroscopic capacity, cost and nontoxicity. In addition to the deliquescent substance described above, the hygroscopic agent 8 may be another hygroscopic substance, for example, a polymer having a three-dimensional network structure having a hydrophilic group generally called a superabsorbent polymer or a synthetic unstable form. You may use together silica, calcium silicate, perlite, anhydrite, zeolite, silica gel, quick lime, etc.

At the time of use, the moisture absorbent 1 is used by placing it on the outer container 3 after removing the water vapor barrier film 6 and exposing the microporous film 5. Moisture in the air passes through the microporous film into the inner container and comes into contact with the moisture absorbent 8 inside. Moisture in the air deliquesces the hygroscopic agent 8 and precipitates the moisture as water. The deposited water passes through the holes of the porous bag 9 having a diameter of 0.1 to 2.0 mm and falls, and is collected in the airtight bag 10. Sealing bag 1
The internal volume of 0 is set to be larger than at least the amount of the moisture absorbent 8 deposited by the moisture absorbent in the porous bag 9 in relation to the amount of the moisture absorbent 8. When the moisture absorbent 8 is used up, the bag 10 is hermetically sealed.
Since a lot of water collects inside the, take it out and throw it away. The outer container 3 can be used any number of times by mounting and using the new inner container 2.

In the above embodiment, the outer container 3 has the shape of the upper surface opening and the medium container is placed and accommodated therein. However, the present invention is not limited to these, and the medium container is not limited thereto. A supporting member for holding the container, a hanging member that can be hung from above, and the like that can hold the medium container can be used.

Next, one embodiment of the method for producing a moisture absorbent of the present invention will be described with reference to the drawings. As shown in FIG. 2, one end 12 of a bag 11 made of a plastic material is opened and the other end 13 is hermetically sealed. Hole 1 on the sealed end 13 side of this bag
Punch four. The diameter of the hole 14 is 0.1 to 2.0 mm,
Moisture absorbent 8 that allows water to pass through this part and is stored inside
Use a slightly smaller than the smallest particle size.
If the number of these holes is too large, water will pass through well, but when transported with the hygroscopic agent 8 stored inside, it will break due to the weight of the hygroscopic agent. Is not enough, and considering these, 1 per
-20 is preferable. In this perforation step, punching with a blade, perforation with a heating blade or laser, and electric energy can be performed. The bag 11 has a laminated structure having a layer of water vapor barrier resin. In particular, a laminated structure of low-density polyethylene and nylon resin is preferable because it has both pinhole resistance and heat-welding property.

Next, the sealed end portion 13 of the bag 10 is inserted into the jig 15 having the cylindrical portion 16 shown in FIG.
At this time, the cylindrical portion of the jig 15 is configured such that the perforated portion formed in the previous punching step is hidden inside the jig 15. Next, the opening end 12 of the bag is folded back and unfolded, and the opening side end 17 of the cylindrical portion 16 of the jig is hidden and folded back.
The end 17 on the opening side of the jig is brought into contact with the side surface of 1. The holding frame member 4 formed by injection molding or the like
The bag 11 mounted on the jig 15 is brought into contact with the frame lower surface 4a. The ultrasonic horn 18 is brought into contact with the upper surface of the holding frame member 4, and the holding frame member 4 and the side surface of the bag are pressed between the ultrasonic horn 18 and the opening side end portion 17 of the jig. In this state, ultrasonic waves are applied to the ultrasonic horn to fix and form the porous bag 9. This ultrasonic wave, though depending on the materials of the bag and the frame member used, generally has a frequency of 5 to 50 KHz.

Next, the open end portion 12 of the bag portion is sealed by heat welding and hermetically sealed to form the hermetically sealed bag 10. Further, the hygroscopic agent 8 is put into the porous bag 9 from the upper surface of the holding frame member 4 and the upper surface of the holding frame member 4 is sealed with the microporous film 5 to manufacture the middle container 2. The inner container 2 is placed on the outer container 3 formed by injection molding or the like, and the moisture absorbent 1
Is completed. Although the frame lower surface 4a of the holding frame member 4 and the side surface of the bag are fixed to each other in the above embodiment, the side surface of the bag may be welded to the outer portion 4b of the holding frame member 4. In this case, as shown in FIG. 5, a fixing jig 19 is put inside, and a half-body heating member 20 is sandwiched between both sides to perform welding.

According to the above-described embodiment, the holding frame member 4 and the double bag portion 7 can be fixed to each other by welding once, so that there is an advantage that the working procedure can be omitted and the cost can be reduced.

By the way, although the double bag portion 7 is formed by bending the bag 11 in the above embodiment, the holding bag member 4 is provided with a plurality of holes each having a diameter of 0.1 to 2.0 mm. May be directly fixed and a sealing bag larger than the porous bag may be fixed to the outside thereof to form a double bag. According to this manufacturing method, the materials of the porous bag and the hermetically sealed bag can be changed, so that it is possible to select a suitable material.

Further, in the above-mentioned embodiment, the holding frame member 4 and the bag 11 are fixed to each other by ultrasonic welding, but a welding method such as hot plate welding, high frequency welding or hot air welding can be used. In particular, in the case of high frequency welding, induction heating and dielectric heating can be selectively used depending on the materials of the holding frame member and the bag to be welded. In the case of a polyamide resin, polyvinyl chloride, or polyester resin having a large dielectric loss coefficient, the resin itself can be directly heated from the inside by dielectric heating, so that heat welding can be performed efficiently. Further, in the case of induction heating utilizing electromagnetic induction, a high frequency is applied to a magnetic substance such as iron to heat the magnetic substance, and the heated magnetic substance is heated and welded by bringing it into contact with or close to the welding surface. Therefore, it can be widely used regardless of the material to be welded. The high frequency at this time is 50 KHz to 3 MHz
Can be heated efficiently.

[0024]

In the moisture absorbent of the present invention, the upper surface of the annular holding frame member of the middle container is sealed with the microporous film and the lower surface is sealed with the double bag of the porous bag and the hermetic bag. , The moisture generated when the hygroscopic agent deliquesces is trapped in a sealed bag,
There is no leakage from the upper or lower surface of the holding frame member, so even if the outer container falls, moisture inside leaks to the outside, ruining the environment of the surrounding storage members such as furniture and clothes. Never. In addition, since it is a bag-shaped bag made of film rather than the conventional basket-type middle container, it is possible to reduce the amount of raw materials used.
The cost and the impact of the plastic on the natural environment can be reduced, and since it can be folded at the time of disposal after use, it is not bulky as a whole and is convenient in handling.

In particular, by disposing a resin having a high water vapor barrier property on the upper surface of the airtight bag or the microporous film, it is possible to prevent moisture absorption when not in use, so that the middle container to be used for refilling is used. The packaging can be omitted.

Further, in the manufacturing method of the present invention, the inner container is a cylindrical bag having an opening at one end, and the other end is sealed, and a hole having a diameter of 0.1 to 2.0 mm is provided on the sealed end side of the bag. Perforating process,
A fixing step of folding back and expanding the opening end of the bag until the opening end is located below the sealed end, and fixing the folded back end and the annular holding frame member, a porous bag by welding the opening end. And a sealing process to form a double bag of a hermetically sealed bag, a microporous film in which a hygroscopic agent is put into the porous bag from the upper surface of the holding frame member and the upper surface of the holding frame member is sealed with a microporous film. A method for manufacturing the above-mentioned moisture absorbent by a film sealing step, or an inner container is fixed to a holding frame member with a porous bag having a plurality of holes having a diameter of 0.1 to 2.0 mm, and the porous bag is provided outside thereof. A double bag is formed by fixing a bag that has a larger sealing capacity than the bag, and then a hygroscopic agent is placed in the bag that is more porous than the upper surface of the holding frame member and the upper surface of the holding frame member is sealed with a microporous film. Therefore, the hygroscopic material of the present invention can be manufactured very easily and easily. It is what it is.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view illustrating a hygroscopic material of the present invention.

FIG. 2 is a perspective view illustrating a punching process of the first embodiment.

FIG. 3 is a perspective view of a jig used for welding.

FIG. 4 is a cutaway side view during ultrasonic welding.

FIG. 5 is a cutaway side view showing another embodiment.

[Explanation of symbols]

 1 Hygroscopic Material 2 Medium Container 3 Outer Container 4 Holding Frame Member 5 Micro Porous Film 6 Water Vapor Barrier Film 7 Double Bag Part 8 Moisture Absorber 9 Porous Bag 10 Sealable Bag 11 Bag 12 Open End 13 Sealed End 14 holes 15 jigs 16 cylindrical parts

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Fukushima Aizuko 2-25-2 Nakakasai, Edogawa-ku, Tokyo

Claims (10)

[Claims] 1. A hygroscopic material composed of an inner container containing a hygroscopic agent that absorbs water in the air to deliquesce, and an outer container holding the inner container. Sealing with a double bag consisting of a porous bag that is sealed with a porous film and contains a hygroscopic agent on the lower surface, and a sealing bag that is outside and that contains moisture generated by the deliquescent of the hygroscopic agent. A hygroscopic material characterized in that the inner container is formed by the above. 2. The diameter of the holes of the porous bag is 0.1 to 2.0.
The hygroscopic material according to claim 1, wherein the hygroscopic material is mm. 3. The hygroscopic material according to claim 1, wherein the airtight bag is made of a plastic having a water vapor barrier property. 4. The moisture absorbent according to claim 1, wherein the upper surface of the microporous film is sealed with a water vapor barrier plastic film. 5. The hygroscopic material according to claim 4, wherein the upper surface of the microporous film is sealed with a water vapor barrier plastic film in an easily openable state. 6. A hygroscopic material composed of an inner container that accommodates a hygroscopic agent that absorbs water in the air and deliquesces, and an outer container that holds the inner container, the upper surface of an annular holding frame member. Is sealed with a microporous film and the lower surface is sealed with a double bag consisting of a porous bag containing a hygroscopic agent and an externally-sealing bag containing moisture generated by the deliquescent of the hygroscopic agent. In the method for manufacturing a hygroscopic material in which the inner container is formed, the inner container is sealed at the other end of a cylindrical bag having one end opening, and a diameter of 0.1 to 2.0 mm is provided on the sealed end side of the bag. Perforating step for opening a hole, a fixing step for folding and opening the open end of the bag until the open end is located below the sealed end, and affixing the folded back end and the annular holding frame member, the open end Process for forming a double bag consisting of a porous bag and a hermetically sealed bag by welding parts, a holding frame member The method for producing a hygroscopic material, characterized in that the hygroscopic material is produced in a microporous film sealing step in which a hygroscopic agent is put in a bag which is more porous than the upper surface and the upper surface of the holding frame member is sealed with a microporous film. 7. The method of manufacturing a hygroscopic material according to claim 6, wherein the fixing step is performed by ultrasonic welding in which ultrasonic waves having a frequency of 5 to 50 KHz are used. 8. The method of manufacturing a hygroscopic material according to claim 6, wherein the fixing step is performed by high frequency welding by high frequency dielectric heating. 9. The fixing step is characterized in that the magnetic material is heated by electromagnetic induction heating with a high frequency of 50 KHz to 3 MHz, and the heated magnetic material is brought into proximity or contact to heat and fix the magnetic material. A method for producing the hygroscopic material described. 10. A porous bag for accommodating a hygroscopic agent for deliquescing by absorbing moisture in the air, wherein an upper surface of an annular holding frame member is sealed with a microporous film and a lower surface thereof is provided outside the bag. A method for producing a hygroscopic material comprising an inner container hermetically sealed by a double bag having a hermetically sealed bag for storing water generated by deliquescence, and an outer container for holding the inner container, wherein the inner container is held A porous bag having a plurality of holes each having a diameter of 0.1 to 2.0 mm is fixed to the frame member, and a sealing bag larger than the porous bag is fixed to the outside thereof to form a double bag, Next, a method for producing a hygroscopic material, characterized in that a hygroscopic agent is put into a porous bag from the upper surface of the holding frame member and the upper surface of the holding frame member is sealed with a microporous film.