JP2005052606A - Deodorizing humidity conditioning sheet material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorizing humidity conditioning sheet material capable of conditioning humidity, by surely adsorbing, and decomposing and deodorizing or decomposing and clearing odorous gas, toxic gas, or humidity and moisture or by releasing humidity in response to a dryness state, after keeping moisture-absorbed and water-absorbed. <P>SOLUTION: Basis materials are composed of nonwoven fabric using paper or biodegradable fiber having expandability and gas permeability and water permeability, and capable of preventing permeation of a granular body having at least the particle size of 1 μm or more. Sealed divisions composed of the required sealing volume are uniformly formed over the whole surface by a hot melt adhesive. Artificial zeolite powder having the particle size of 1 μm or more, the specific surface area of 100 m<SP>2</SP>/g or more, and base substitution capacity (meq/100 g) of 200 mg or more, is sealed in the sealing division at a volume rate of 20 to 80 % of the sealing division content unit volume. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

Industrial application fields

  The present invention relates to a deodorizing and humidity control sheet material. More specifically, a large amount of odors and harmful gases are adsorbed and decomposed and decomposed, or moisture and moisture are absorbed and absorbed, and the moisture is released according to drying conditions. In particular, the present invention relates to a deodorizing and humidity control sheet material which is most suitable for a sheet requiring care recipient or a sick house prevention or deodorizing humidity control sheet in a closed building space.

Conventional technology

  In recent years, with the arrival of a rapidly aging society, the number of elderly people requiring care has increased significantly, and the ratio of nursing care services has increased in addition to treatment and medical care services in hospitals and medical facilities, etc. However, it has been remarkably increasing.

  On the other hand, in terms of residential life, in recent years, residential buildings in urban areas are being transferred to high-rise apartment buildings with steel frames and reinforced concrete structures, and detached houses in urban areas are also seismic, fireproof, and crimeproof. It is being transferred to residential buildings by the prefabricated method and precut method.

  However, these residential buildings have improved the structural accuracy of the buildings, and in addition to the use of construction hardware such as aluminum sash and iron doors and the use of new building materials, the sealing of the building space has increased remarkably, which is why the humid period The building space is extremely unpleasant because the bedding and clothing in the building space absorbs a lot of moisture, and the stuffiness and wetness in the building space is increased, and the living odor stays. It is an environment.

Furthermore, the increase in the sealing performance of the building space warms the interior of the building space, and even a slight difference from the outside air temperature can cause condensation on the inner wall surface. Not only the occurrence but also collection of sanitary pests such as mites and beetles using the moths and bacteria as a feed is caused, and the environment becomes extremely unsanitary.
In addition, due to the increase in sealing performance, a lot of synthetic resin materials, synthetic chemical paints, or synthetic adhesives for construction are used in the building space for new building materials, wallpaper, furniture to be stored, furniture, etc. It has been elucidated that the so-called toxic organic compounds that volatilize and exude from these gases cause volatilization and retention in the building space and cause sick house syndrome that causes many diseases, and has been raised as a major social problem.

  In response to this situation, a prior application in which activated carbon having a large physical adsorption capacity or natural zeolite powder is made with paper and used as a sheet for elderly people requiring care is disclosed in Japanese Patent Application Laid-Open No. 2002-327394. JP-A-5-131136 as a prior application to deodorize by thermally bonding to a sheet, or a sheet in which activated carbon is mixed with plastic to form a sheet, or activated carbon is fixed between nonwoven fabrics with ethylene vinyl acetate. JP-A-2000-238145 is known as a prior application for producing an odor, and furthermore, an adsorbent powder such as activated carbon or natural zeolite is encased in a plurality of cavities and heat-sealed and fixed to deodorize the filter. It is known in Japanese Utility Model Laid-Open No. 5-63630.

However, in the sheets for elderly people requiring care, the elderly people needing to take a bath and do not leave the excrement, and the amount of urination is large in addition to the generation of odor associated with a large amount of sweat and body fluid. Absolute adsorption amount or absolute moisture absorption capacity for adsorbing or absorbing a large amount of odor or moisture, moisture generated even when dispersed activated paper or dispersion bonded to non-woven fabric etc. with large activated carbon or natural zeolite In addition, the method of fixing to paper or non-woven fabric with heat fusion or adhesive is deodorant in combination with the enormous number of minute pores related to adsorption and moisture absorption such as activated carbon and natural zeolite. And the hygroscopicity is hardly exhibited.
In addition, the paper made by mixing with activated carbon has the problems of insufficient absolute adsorption capacity and moisture absorption capacity, and the paper strength is extremely lowered and collapses due to slight moisture absorption, and the practical performance cannot be maintained.

  Furthermore, even in a prior application in which a relatively large amount of activated carbon or natural zeolite can be encased and encased as in Japanese Utility Model Publication No. 5-63630, odors, toxic gases, moisture, moisture, etc. are present if the encapsulated enclosure is heat-sealed and fixed. Restricted to adsorption and moisture absorption only on the outer surface of the encapsulated activated carbon or natural zeolite, effective deodorization and hygroscopicity are not exhibited even when a large amount of activated carbon or natural zeolite is used, and heat fusion When fixing, it is necessary to use impulse, high frequency or ultrasonic welder depending on the porous sheet material, so it takes a lot of time for heat sealing and is expensive and costly. Since the thickness is also fixed, the range of use is limited, and the overall thickness becomes rigid, making it unsuitable for use in sheets for elderly people requiring care.

  The inventor has conducted research in view of such problems, and as a result, a thin paper or a household thin paper made from a papermaking raw material having a long fiber length retains air permeability and moisture permeability as well as stretchability and is excellent in disposal. Alternatively, even if the fabric is made of non-woven fabric using biodegradable fibers, it is possible to form a substrate that retains stretchability and air permeability and is excellent in disposal properties, and actively uses odor gas, harmful gas, moisture and moisture. In order to adsorb or absorb moisture and absorb water, it is preferable to have a small particle size and a large contact surface area, and in order to efficiently adsorb or absorb moisture and absorb water, it has a large adsorption capacity or moisture absorption and water absorption capacity. The so-called large specific surface area is suitable, and the adsorbed odorous gas and harmful gas can be easily resolved or decomposed and eliminated by catalytic action and strong base substitution. The Bei to materials has led to the investigation that artificial zeolite powder are preferred.

  In addition, the absolute adsorption capacity or absolute moisture absorption capacity is formed in enormous quantity in order to ensure that this artificial zeolite powder is evenly absorbed, absorbed, or absorbed by odor gas, harmful gas, moisture or moisture. In order to adsorb or absorb or absorb odorous gas, harmful gas, moisture or water in each of the artificial zeolite powder enclosed in the compartment, the artificial zeolite powder The adhesive frame is formed so as to be freely enclosed and sealed, and the adhesive frame edge is formed on one side surface of the substrate with a required shape area and interval by a hot melt adhesive. The present inventors have conceived that an enclosing section can be formed in the present invention.

Problems to be solved by the invention

  The present invention reliably absorbs, absorbs and absorbs odorous gas and harmful gas even when a large amount of odorous gas, harmful gas, moisture and moisture is generated, and removes the absorbed odorous gas and harmful gas. An object of the present invention is to provide a deodorizing and humidity control sheet material that can retain moisture and release moisture according to the drying condition.

Means for solving the problem

The technical means used by the present invention in order to solve the above-mentioned problem is to use paper or biodegradable fiber that has stretchability and air permeability and can prevent permeation of powder of at least 1 μm or more. A non-woven fabric having stretchability and air permeability and moisture permeability and capable of preventing permeation of powder of at least 1 μm or more is used as a base material. In addition to being formed evenly in this enclosed compartment, odor gas, harmful gas, moisture and moisture are actively adsorbed or absorbed and absorbed, so that the particle size is 1 μm or more and the contact surface area ratio is extremely high. In order to efficiently adsorb, absorb, or absorb odorous gas, toxic gas, moisture or moisture, it has a large adsorption capacity or moisture absorption capacity, so-called specific surface area. Because come something is requested, at least 100 m 2 / ^g to且吸wearing been odorous gases and harmful gases at least from the top to correspondingly eliminate Kusashi or degraded erased, its essentially catalysis for holding at a specific surface area Since it is desired to impart a strong base substitution property, 200 mg or more of artificial zeolite powder is used in the base substitution capacity (meq / 100 g).

  In order to adsorb, absorb, or absorb a large amount of odorous gas, harmful gas, moisture or moisture with such artificial zeolite powder, the absolute adsorption capacity and absolute moisture absorption that can absorb, absorb and absorb moisture. In order to divide the artificial zeolite powder enough to absorb water evenly over the entire surface of the substrate and to freely embed each of the artificial zeolite powders freely, use a hot melt adhesive to reduce the required enclosure volume. Thus, an enclosed compartment is formed, and the artificial zeolite powder to be enclosed is enclosed at a volume ratio of 20 to 80% of the enclosed volume.

Action

The present invention has the above-described configuration, and the base material to be used has stretchability, air permeability and water permeability, and can prevent permeation of particles having a particle size of 1 μm or more, or biodegradable Since the nonwoven fabric made of fibers is used, it can be disposed of freely, and the substrates are uniformly formed over the entire surface by a hot melt adhesive, and the inside of the enclosure is The volume of the enclosed compartment is 20 so that each of the artificial zeolite powders having a particle size of 1 μm or more, a specific surface area of 100 m ² / g or more, and a base substitution capacity (meq / 100 g) of 200 mg or more is movably enclosed. Because it is sealed at a volume ratio of up to 80%, odorous gas, toxic gas, moisture and moisture can easily pass through the substrate, and the contact surface area ratio is large, and the absolute adsorption capacity and absolute moisture absorption and water absorption capacity. Because it can be sufficiently contacted with a huge amount of artificial zeolite powder, it is positively and efficiently adsorbed, absorbed and absorbed moisture, and the adsorbed odorous gas and harmful gas have strong catalytic action. The base-resolving property eliminates odors and decomposes and eliminates moisture. Furthermore, moisture that has been absorbed and absorbed is also temporarily retained, and then moisture is released according to the drying condition to adjust the humidity.

Furthermore, since the artificial zeolite powder enclosed in the enclosure compartment is enclosed at a volume ratio of 20 to 80% of the internal volume of the enclosure compartment, it is not fixed due to the encapsulation. It is extremely flexible and is not fixed in thickness.
In addition, when forming the enclosing section, an artificial zeolite powder is preliminarily applied to one side of the substrate with a hot melt adhesive and an adhesive frame edge is applied with a shape and size of the enclosing section with a required interval. It is possible to easily and efficiently form an adhesive by simply placing the required amount of the substrate in a coordinated manner and then heating and pressing.

  In the following, the embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view of a substrate coated with an adhesive frame edge by a hot melt adhesive, and FIG. In addition, the substrate 1 has excellent disposability because it is mainly used for short-term disposal such as sheets for elderly people requiring nursing care and deodorizing and humidity control in buildings, and the substrate 1 is air permeable. Maintain permeable and moisture permeability so that odorous gas or harmful gas generated by moisture permeation or moisture or moisture is absorbed or absorbed, and absorbs odorous gas or harmful gas. Absolutely adsorbing capacity sufficient to absorb and retain moisture or moisture by decomposing and erasing, or the required amount of artificial zeolite powder 3B suitable for absolute moisture absorption and water absorption capacity is uniformly enclosed and coordinated over the entire surface. Shin from above Therefore, it is desirable to use paper as a specific material of the substrate 1, and particularly suitable for thin paper and household thin paper, and artificial zeolite powder 3B coordinated in an enclosed compartment is possible. As long as the surface area ratio is large, that is, fine particles are advantageous in terms of positive adsorption of odor gas, harmful gas, moisture and moisture, moisture absorption, water absorption, and for this purpose, the particle size is about 1 to 30 μm. Therefore, a material that can prevent permeation of particles having a size of at least 1 μm or more is used.

  Furthermore, the substrate 1 can be made of a non-woven fabric made of biodegradable fibers in place of these papers. Even when the non-woven fabric is used, in addition to the stretchability and the air permeability / moisture permeability, the particle size is 1 μm or more. Those having the function of preventing permeation of the granules are used. Examples of the biodegradable fiber material include polylactic acid and aromatic polyester, and a non-woven fabric may be formed from biodegradable fibers of about 1 to 15 deniers.

  The artificial zeolite powder 3B is uniformly distributed in the enclosing section 3A and coordinated over the entire surface of the substrate 1, and the substrate 1 is made of paper or a non-woven fabric made of biodegradable fibers, and a required amount of artificial zeolite. In order to coordinate the powder 3B in each enclosing section 3A, the hot melt adhesive 1A is used to form the enclosing section 3A by bonding and encapsulating the substrates 1 in a short time.

Although there is no particular restriction on the means for forming the enclosed section 3A by enclosing the required amount of the artificial zeolite powder 3B over the entire surface with the hot melt adhesive 1A, there is no particular limitation, but the enclosed section is inexpensive and efficient. As one of suitable enclosure section forming means 2A for forming 3A, as shown in FIG. 2, an artificial zeolite powder in which hot melt adhesive 1A is encapsulated in the enclosure section 3A in advance on one side surface of the substrate 1 is shown. A substrate 2 on which an adhesive frame edge 10A is applied so that the adhesive enclosure 3C can be formed with a volume corresponding to the enclosure compartment volume sufficiently larger than the enclosure compartment volume of the body 3B, and with an appropriate shape and interval; The non-coating substrate 1 is nipped and heated and pressed by the heating and pressing roll 2B, and the hot melt adhesive 1A applied in an appropriate shape immediately before the heating and pressing roll 2B is held in the bonding frame edge 10A. Required Arranged artificial zeolite powder 3B respectively the supply port 2C, is intended to adhere encapsulated 3C adhesive frame edge 10A of the hot melt adhesive 1A by Thus to nip heat and pressure by a heating pressure roll 2B.
The heating and pressing roll 2B is naturally maintained at a temperature at which the hot melt adhesive 1A can be melted, and the portion where the artificial zeolite powder 3B is disposed has a bulge. Those that retain elasticity are used.

The hot melt adhesive 1A used in such a case is not particularly limited and can be used as long as it can strongly bond and enclose the substrates 1C, but can be discarded in a relatively short time in the usage of the present invention. Therefore, components having excellent discardability are desirable, and specific examples include ethylene vinyl acetate copolymer resin, styrene butadiene block rubber, styrene isoprene block rubber, and the like.
The bonding width of the bonding frame edge 10A formed by applying the hot melt adhesive 1A is specifically determined by the properties of the substrate 1 used, the encapsulating capacity of the artificial zeolite powder 3B to be encapsulated 3C, and the like. However, the standard is about 1 to 3 mm when the enclosed capacity is small, and about 3 to 6 mm when the enclosed capacity is large.

Thus, using the substrate 2 coated with the adhesive frame edge 10A by the hot melt adhesive 1A and the uncoated substrate 1, the required amount of artificial zeolite powder 3B is arranged in each of the adhesive frame edges 10A. In addition, the deodorizing and humidity control sheet material 3 of the present invention is formed by bonding and sealing the substrate 2 and the substrate 1 to each other. In the sealing section 3A that is uniformly formed over the entire surface by the adhesive sealing 3C. The enclosed weight of the artificial zeolite powder 3B to be encapsulated is about 100 to 300 g per 1 m ² of the substrate 1 for adsorption of odorous gas or harmful gas or moisture or moisture absorption or water absorption for general use purposes. since it is desired, when the sealed compartment 3A to provisionally formed at a rate of 100 / m ² is approximately 1乃as inclusion weight of the artificial zeolite powder 3B in each enclosed compartment 3A It is about 3g.

And, it is important to enclose the artificial zeolite powder 3B in the enclosing compartment 3A. The odor gas, harmful gas, moisture or moisture that comes into contact with the substrate 1 in practical use using the deodorizing and humidity control sheet material 3 of the present invention is important. Is easily gas-permeable and moisture-permeable, and is securely adsorbed, moisture-absorbed and water-absorbed in the artificial zeolite powder 3B encapsulated in the enclosing section 3A, and is given flexibility and deformability throughout the workability. In order to improve the usability, the artificial zeolite powder 3B enclosed in the enclosure section 3A is entrapped freely.
For this purpose, as understood in FIG. 3, the artificial zeolite powder 3B to be encapsulated with respect to the volume of the enclosing compartment 3A is encapsulated at a volume ratio of 20 to 80%.

  FIG. 4 is an explanatory view of a sheet 4 for the elderly requiring care using the deodorizing and humidity control sheet material 3 according to the present invention, and the sheet 4 for the elderly requiring care is adjusted to a desired width and length according to the present invention. The artificial zeolite powder 3B encapsulated in the enclosing compartment 3A can be formed into a required shape and size without leakage by simply cutting the portion of the adhesive frame edge 10A of the wet sheet material 3, and provided for practical use. Is possible.

The invention's effect

As described above, the present invention uses paper or a non-woven fabric made of biodegradable fibers, and therefore can be easily discarded even when used for disposable products such as sheets for elderly people requiring care. The substrate has air permeability and water permeability, and can prevent permeation of particles having a particle size of 1 μm or more, and the substrate can be uniformly applied over the entire surface by a hot melt adhesive. Is sealed to form an enclosing compartment, and the inside area of the enclosing compartment has a very large contact surface area ratio of 1 μm or more and a specific surface area of 100 m ² / g or more and a base substitution capacity (meq / 100 g). ) Is 200 mg or more of artificial zeolite powder, which is required for absolute adsorption, moisture absorption and water absorption capacity, and is encapsulated in a volume ratio of 20 to 80% of the enclosed compartment volume. Valid 且 reliable adsorption or moisture can floating freely artificial zeolite powder each individual is, water is made.

Therefore, when the present invention is used for a sheet for elderly people requiring care or a deodorizing and humidity control sheet in a building, a large amount of odor, harmful gas, moisture or moisture can be easily permeated from the surface of the substrate. At the same time, the contact surface area ratio enclosed in each enclosure section is extremely large, and it is positively and efficiently adsorbed, absorbed and absorbed positively by artificial zeolite powder with huge absolute absorption, moisture absorption and water absorption capacity. At the same time, the adsorbed odorous gas and harmful gas can be easily resolved and eliminated by the catalytic action and strong base substitution, and the moisture absorbed and absorbed is once retained in the artificial zeolite powder. In addition, moisture is released according to the dry conditions in the vicinity, and the humidity control function works. Therefore, even if moisture absorption such as sweating and urination is performed, water is absorbed in a short time, and the feeling of steaming and wetting is eliminated. It is used.
In addition, since artificial zeolite powder is encapsulated in the enclosure compartment at a volume ratio of 20 to 80% of the internal volume, the feeling of use of the product formed with the flexibility and the secondary processability as a whole. Deodorant humidity control sheet with many excellent features, such as being able to be used in a wide range as a deodorization humidity control sheet for closets, chests and other storage equipment etc. It can be said that it is a material.

  It is explanatory drawing of the base | substrate with which the adhesion frame edge was applied.   It is an illustration explanatory drawing of the adhesion enclosure method of an enclosure division.   It is an expanded sectional explanatory view of the present invention.   It is explanatory drawing of the sheet for elderly people requiring care by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 1A Hot melt adhesive 10A Adhesive frame edge 2 Base coated with adhesive frame edge 2A Enclosed section forming means 2B Heating and pressing roll 2C Artificial zeolite powder supply port 3 Deodorizing and conditioning sheet material of the present invention 3A Enclosed section 3B Artificial zeolite powder 3C Adhesive encapsulation 4 Sheets for the elderly requiring care using the present invention

Claims (2)

The base material made of paper that has stretchability and air permeability and at least prevents particles having a particle diameter of 1 μm or more from passing through each other is covered with a hot-melt adhesive so that the enclosed section of the required enclosed volume is spread over the entire surface. An artificial zeolite powder having a particle size of 1 μm or more, a specific surface area of 100 m ² / g or more, and a base substitution capacity (meq / 100 g) of 200 mg or more is enclosed in the enclosure compartment. A deodorizing / humidifying sheet material which is sealed at a volume ratio of 20 to 80% of the volume in the compartment.   The deodorizing and humidity control sheet material according to claim 1, wherein the material is a non-woven fabric using biodegradable fibers.

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