JP3185818U - Dehumidifying sheet - Google Patents

Dehumidifying sheet Download PDF

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JP3185818U
JP3185818U JP2013003562U JP2013003562U JP3185818U JP 3185818 U JP3185818 U JP 3185818U JP 2013003562 U JP2013003562 U JP 2013003562U JP 2013003562 U JP2013003562 U JP 2013003562U JP 3185818 U JP3185818 U JP 3185818U
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spherical
silica gel
type silica
gel particles
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明孝 末冨
侃 石田
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Ube Material Industries Ltd
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Abstract

【課題】通気性が高い除湿シートを提供する。
【解決手段】二枚の不織布シートを、それらのシートの周縁と、その内側に格子状に接着部を設けて貼り合わせることによって、接着部3と接着部3との間に、一辺の長さが2〜10cmの範囲にある長方形の空間部4を形成し、その空間部4に球状B型シリカゲル粒子を収容した除湿シート1であって、球状B型シリカゲル粒子の粒子径が3〜5mmの範囲にあることを特徴とする。
【選択図】図1
A dehumidifying sheet having high air permeability is provided.
The length of one side between an adhesive part 3 and an adhesive part 3 is obtained by bonding two non-woven sheets to each other by providing an adhesive part in the form of a lattice inside the peripheral edge of the sheets. Is a dehumidifying sheet 1 in which a spherical space 4 is formed in a range of 2 to 10 cm, and spherical B-type silica gel particles are accommodated in the space 4, and the particle size of the spherical B-type silica gel particles is 3 to 5 mm. It is in the range.
[Selection] Figure 1

Description

本考案は、除湿シートに関し、特に敷き布団の下に敷いて使用するために有用性の高い除湿シートに関する。   The present invention relates to a dehumidifying sheet, and more particularly to a dehumidifying sheet that is highly useful for use under a mattress.

二枚の不織布シートを、それらのシートの周縁と、その内側に格子状に接着部を設けて貼り合わせることによって、接着部と接着部との間に長方形の空間部を形成し、その空間部に吸湿剤を収容した構成の除湿シートは、敷き布団の下に敷いて、睡眠中に体外に放出された汗などの水分を吸収させる目的、あるいは布団や衣類などの収納スペース(例:タンス、押入れ)に配置して収納スペースを除湿させる目的で利用されている。この除湿シートの吸湿剤には、球状のB型シリカゲル粒子が広く利用されている。B型シリカゲルは、一般に水分の吸湿力が高く、吸湿能力が消失した後は、天日で乾燥することによって繰り返し使用できるという利点がある。   Two non-woven sheets are bonded to each other by providing an adhesive portion in a lattice shape on the inner periphery of the non-woven sheets, thereby forming a rectangular space portion between the adhesive portion and the adhesive portion. A dehumidifying sheet with a moisture absorbent is placed under the mattress to absorb moisture such as sweat released outside the body during sleep, or a storage space for futons and clothing (eg chiffons, closets) ) And is used for the purpose of dehumidifying the storage space. Spherical B-type silica gel particles are widely used as a moisture absorbent for the dehumidifying sheet. B-type silica gel generally has a high moisture-absorbing ability and has an advantage that it can be used repeatedly by drying in the sun after the hygroscopic ability is lost.

特許文献1には、曇り空などでも比較的短時間で乾燥できるように、除湿シートの不織布の少なくとも一方の表面に備長炭の粉末を塗布することが記載されている。この文献にはまた、吸湿剤(乾燥/除湿剤)に粒子径が2〜5mmのB型シリカゲルを用いることが記載されている。この文献には、除湿シートの具体例として、幅が90cmで、長さが100cmであって、吸湿剤を収容する空間部(袋部)を幅方向に16個、長さ方向に16個設けた除湿シートが記載されている。   Patent Document 1 describes that Bincho charcoal powder is applied to at least one surface of a nonwoven fabric of a dehumidifying sheet so that it can be dried in a relatively short time even in a cloudy sky. This document also describes the use of B-type silica gel having a particle diameter of 2 to 5 mm as a hygroscopic agent (drying / dehumidifying agent). In this document, as a specific example of the dehumidifying sheet, the width is 90 cm, the length is 100 cm, and 16 spaces in the width direction (bag portions) for accommodating the hygroscopic agent are provided in the width direction and 16 in the length direction. Dehumidifying sheets are described.

実用新案登録第3096946号Utility model registration No. 3096946

除湿シートの吸湿剤が収容される長方形の空間部のサイズは、通常は、一辺の長さが2〜10cmの範囲にある。このようなサイズの空間部を有する除湿シートでは、吸湿剤の球状B型シリカゲル粒子は粒子径が2〜5mmの範囲にあれば、シートの空間部に収納し易く、また敷き布団の下に敷いてもほとんど人体に違和感を与えない。
一方、除湿シートは、使用時には、体外に放出された汗などの水分を素早く吸収し、乾燥時には、吸収した水分を素早く放出するように通気性が高い方が好ましい。従って、本考案の目的は、従来の球状B型シリカゲル粒子を吸湿剤に用いた除湿シートよりも通気性が高い除湿シートを提供することにある。
As for the size of the rectangular space part in which the moisture absorbent of the dehumidifying sheet is accommodated, the length of one side is usually in the range of 2 to 10 cm. In a dehumidifying sheet having a space of such a size, the spherical B-type silica gel particles of the hygroscopic agent can be easily stored in the space of the sheet if the particle diameter is in the range of 2 to 5 mm, and laid under the mattress. However, the human body is hardly discomforted.
On the other hand, it is preferable that the dehumidifying sheet has high air permeability so as to quickly absorb moisture such as sweat released outside the body when used, and to quickly release absorbed moisture when dried. Accordingly, an object of the present invention is to provide a dehumidifying sheet having higher air permeability than a dehumidifying sheet using conventional spherical B-type silica gel particles as a hygroscopic agent.

本考案者は、除湿シートの吸湿剤に、粒度分布の範囲が狭い球状B型シリカゲル粒子を用いること、具体的には粒子径が3〜5mmの範囲にある球状B型シリカゲル粒子を用いることによって、除湿シートの通気性が向上することを見出して、本考案を完成させた。粒子径が3〜5mmの範囲にある球状B型シリカゲル粒子を用いることによって、粒子径が2〜5mmの範囲にある球状B型シリカゲル粒子を用いた場合と比較して、除湿シートの通気性が向上する理由としては、粒子径が3〜5mmの範囲にある球状B型シリカゲル粒子を除湿シートの空間部に収容した場合は、粒子径が相対的に大きい大型の球状B型シリカゲル粒子同士の隙間に、粒子径が相対的に小さい小型の球状B型シリカゲル粒子が侵入して、大型の球状B型シリカゲル粒子同士の隙間を塞いで、空気が流れにくくなるということが起こりにくくなるためであると考えられる。   The present inventor uses spherical B-type silica gel particles having a narrow particle size distribution range, specifically, spherical B-type silica gel particles having a particle diameter in the range of 3 to 5 mm as the moisture absorbent of the dehumidifying sheet. The present invention was completed by finding that the air permeability of the dehumidifying sheet was improved. By using spherical B-type silica gel particles having a particle diameter in the range of 3 to 5 mm, the dehumidification sheet has better air permeability than when spherical B-type silica gel particles in the range of 2 to 5 mm are used. The reason for the improvement is that when spherical B-type silica gel particles having a particle diameter in the range of 3 to 5 mm are accommodated in the space of the dehumidifying sheet, the gaps between the large spherical B-type silica gel particles having a relatively large particle diameter. This is because small spherical B-type silica gel particles having a relatively small particle diameter intrude and block gaps between large spherical B-type silica gel particles, making it difficult for air to flow. Conceivable.

従って、本考案は、二枚の不織布シートを、それらのシートの周縁と、その内側に格子状に接着部を設けて貼り合わせることによって、接着部と接着部との間に、一辺の長さが2〜10cmの範囲にある長方形の空間部を形成し、その空間部に球状B型シリカゲル粒子を収容した除湿シートであって、球状B型シリカゲル粒子の粒子径が3〜5mmの範囲にあることを特徴とする除湿シートにある。   Therefore, in the present invention, two non-woven sheets are bonded to each other between the bonding portion and the bonding portion by bonding the peripheral portions of the sheets and the bonding portion in a lattice shape on the inner side thereof. Is a dehumidifying sheet in which a rectangular space part in a range of 2 to 10 cm is formed and spherical B-type silica gel particles are accommodated in the space part, and the particle diameter of the spherical B-type silica gel particles is in a range of 3 to 5 mm. The dehumidifying sheet is characterized in that.

本考案の除湿シートの好ましい態様は、次の通りである。
(1)球状B型シリカゲル粒子のゆるみ嵩密度が0.45〜0.55g/cm3の範囲にある。
(2)前記二枚の不織布シートの少なくとも一方の表面に備長炭の粉末が塗布してある。
Preferred embodiments of the dehumidifying sheet of the present invention are as follows.
(1) The loose bulk density of the spherical B-type silica gel particles is in the range of 0.45 to 0.55 g / cm 3 .
(2) Bincho charcoal powder is applied to at least one surface of the two nonwoven fabric sheets.

本考案の除湿シートは、吸湿剤として作用する球状B型シリカゲル粒子の通気性が高いので、本考案の除湿シートを敷き布団の下に敷くことによって、睡眠中に体外に放出された汗などの水分を素早く吸収することができる。また、吸湿剤の乾燥時には、吸収した水分を素早く放出するので乾燥時間を短縮化できる。さらに、本考案の除湿シートは、球状B型シリカゲル粒子の粒度分布の範囲が狭いので、除湿シートの空間部内に収容された球状B型シリカゲル粒子は最密充填に近い状態で配列する。このため、除湿シートを敷き布団の下に敷いたときには、個々の球状B型シリカゲル粒子に均一に荷重が掛かるため球状B型シリカゲル粒子が割れにくくなる。   Since the dehumidifying sheet of the present invention has high air permeability of the spherical B-type silica gel particles that act as a hygroscopic agent, the dehumidifying sheet of the present invention is laid under the futon and moisture such as sweat released outside the body during sleep. Can be absorbed quickly. In addition, when the moisture absorbent is dried, the absorbed moisture is quickly released, so that the drying time can be shortened. Further, since the dehumidifying sheet of the present invention has a narrow particle size distribution range of the spherical B-type silica gel particles, the spherical B-type silica gel particles accommodated in the space of the dehumidifying sheet are arranged in a state close to the closest packing. For this reason, when a dehumidifying sheet is laid under the futon, a load is uniformly applied to each spherical B-type silica gel particle, so that the spherical B-type silica gel particle is hardly broken.

本考案に係る除湿シートの正面図の一例である。It is an example of the front view of the dehumidification sheet which concerns on this invention. 本考案に係る除湿シートの部分断面図の一例である。It is an example of the fragmentary sectional view of the dehumidification sheet concerning the present invention.

図1は、本考案に係る除湿シートの正面図の一例である。図2は、本考案に係る除湿シートの部分断面図の一例である。図1及び図2において、除湿シート1は、二枚の不織布シート2a、2bを、それらのシートの周縁と、その内側に格子状に接着部3を設けて貼り合わせることによって、接着部3と接着部3との間に長方形空間部4を形成し、その長方形空間部4に球状B型シリカゲル粒子5を吸湿剤として収容した構成のシートである。不織布シート2a、2bは、例えば、不織布シートの互いに接する面のそれぞれに、予め熱可塑性樹脂の層を設けて、加熱圧着する方法によって貼り合わせることができる。熱可塑性樹脂としては、ポリエチレンを挙げることができる。   FIG. 1 is an example of a front view of a dehumidifying sheet according to the present invention. FIG. 2 is an example of a partial cross-sectional view of a dehumidifying sheet according to the present invention. 1 and 2, the dehumidifying sheet 1 includes two non-woven sheets 2a and 2b, which are bonded to each other by providing the adhering portions 3 in a lattice shape on the inner periphery of the non-woven sheets 2a and 2b. This is a sheet having a configuration in which a rectangular space portion 4 is formed between the adhesive portion 3 and spherical B-type silica gel particles 5 are accommodated in the rectangular space portion 4 as a moisture absorbent. The nonwoven fabric sheets 2a and 2b can be bonded together by a method in which, for example, a thermoplastic resin layer is provided in advance on each of the surfaces of the nonwoven fabric sheet that are in contact with each other, followed by thermocompression bonding. An example of the thermoplastic resin is polyethylene.

不織布シート2a、2bは、一般に長さ方向の長さLが80cm以上で、幅方向の長さWが60cm以上である。長さ方向の長さLは、90〜120cmの範囲にあることが好ましい。幅方向の長さWは90〜110cmの範囲にあることが好ましい。長方形空間部4は、一辺の長さが一般に2〜10cmの範囲にあり、好ましくは3〜8cmの範囲にある。長方形空間部4の内側の高さは3〜10mmの範囲にあることが好ましい。   The nonwoven fabric sheets 2a, 2b generally have a length L in the length direction of 80 cm or more and a length W in the width direction of 60 cm or more. The length L in the length direction is preferably in the range of 90 to 120 cm. The length W in the width direction is preferably in the range of 90 to 110 cm. The rectangular space 4 has a side length generally in the range of 2 to 10 cm, preferably in the range of 3 to 8 cm. The inner height of the rectangular space 4 is preferably in the range of 3 to 10 mm.

本考案の除湿シートで用いる球状B型シリカゲル粒子は、粒子径が3〜5mmの範囲にあり、従来の除湿シートで用いられている粒子径が2〜5mmの範囲にある球状B型シリカゲル粒子と比較して粒子径の範囲が狭い。本考案の除湿シートで用いる球状B型シリカゲル粒子は、ゆるみ嵩密度が、通常は0.45〜0.55g/cm3の範囲にあり、粒子径が2〜5mmの範囲にある球状B型シリカゲル粒子と比較して低い。球状B型シリカゲル粒子の粒子径の調整は、例えば、目開きが3mmと5mmの篩を用いて分級することによって行うことができる。 The spherical B-type silica gel particles used in the dehumidifying sheet of the present invention have a particle size in the range of 3 to 5 mm, and the spherical B-type silica gel particles in the range of 2 to 5 mm used in conventional dehumidifying sheets and Compared with the narrow particle size range. The spherical B-type silica gel particles used in the dehumidifying sheet of the present invention have a loose bulk density, usually in the range of 0.45 to 0.55 g / cm 3 , and a spherical B-type silica gel in which the particle diameter is in the range of 2 to 5 mm. Low compared to particles. The particle diameter of the spherical B-type silica gel particles can be adjusted, for example, by classification using a sieve having openings of 3 mm and 5 mm.

本考案の除湿シートは、さらに水分を吸収した球状B型シリカゲル粒子の乾燥を早めるために表裏の少なくとも一方の面に備長炭の粉末が塗布されていてもよい。また、本考案の除湿シートに、塩化コバルトなどの吸湿量によって色が変化する化合物を付設して、球状B型シリカゲル粒子の吸湿状況を目視で確認できるようにしてもよい。   In the dehumidifying sheet of the present invention, Bincho charcoal powder may be applied to at least one of the front and back surfaces in order to further dry the spherical B-type silica gel particles that have absorbed moisture. In addition, the dehumidifying sheet of the present invention may be provided with a compound whose color changes depending on the amount of moisture absorption, such as cobalt chloride, so that the moisture absorption status of the spherical B-type silica gel particles can be visually confirmed.

[実施例1]
粒子径が3〜5mmの範囲にある球状B型シリカゲル粒子を用意した。その球状B型シリカゲル粒子のゆるみ嵩密度を下記の方法により測定したところ、0.51g/cm3であった。
[Example 1]
Spherical B-type silica gel particles having a particle diameter in the range of 3 to 5 mm were prepared. The loose bulk density of the spherical B-type silica gel particles was measured by the following method and found to be 0.51 g / cm 3 .

[ゆるみ嵩密度の測定方法]
容量100cm3の容器に、試料の球状B型シリカゲル粒子を容器開口部の上方から静かに落として、容器開口部から球状B型シリカゲル粒子を溢れさせる。容器開口部から溢れた過剰の球状B型シリカゲル粒子を静かにすり落とす。容器内に充填された球状B型シリカゲル粒子の質量(g)を測定し、下記の式よりゆるみ嵩密度(g/cm3)を算出する。
ゆるみ嵩密度=容器内に充填された球状B型シリカゲル粒子の質量/容器の容量
[Measurement method of loose bulk density]
In a container having a capacity of 100 cm 3 , the spherical B-type silica gel particles of the sample are gently dropped from above the opening of the container to overflow the spherical B-type silica gel particles from the opening of the container. Gently scrape off excess spherical B-type silica gel particles overflowing from the container opening. The mass (g) of the spherical B-type silica gel particles filled in the container is measured, and the loose bulk density (g / cm 3 ) is calculated from the following formula.
Loose bulk density = mass of spherical B-type silica gel particles filled in the container / capacity of the container

二枚のポリエステル製の不織布シートの間に、上記の球状B型シリカゲル粒子を入れながら、二枚の不織布シートを貼り合わせて、図1に示すような除湿シートを作成した。この除湿シートを敷き布団の下に敷いて、睡眠中に体外に放出された汗などの水分を吸収させる目的で1年間使用したところ、B型シリカゲル粒子が除湿シートから漏れ出ることはなかった。   While putting the above spherical B-type silica gel particles between two non-woven fabric sheets made of polyester, the two non-woven fabric sheets were bonded together to make a dehumidifying sheet as shown in FIG. When this dehumidifying sheet was laid under the futon and used for one year for the purpose of absorbing moisture such as sweat released outside the body during sleep, the B-type silica gel particles did not leak from the dehumidifying sheet.

[比較例1]
粒子径が2〜5mmの範囲にある球状B型シリカゲル粒子を用意した。その球状B型シリカゲル粒子のゆるみ嵩密度を測定したところ、0.57g/cm3であり、実施例1の球状B型シリカゲル粒子と比較してゆるみ嵩密度が大きかった。
[Comparative Example 1]
Spherical B-type silica gel particles having a particle diameter in the range of 2 to 5 mm were prepared. When the loose bulk density of the spherical B-type silica gel particles was measured, it was 0.57 g / cm 3 , which was larger than that of the spherical B-type silica gel particles of Example 1.

1 除湿シート
2a、2b 不織布シート
3 接着部
4 長方形空間部
5 球状B型シリカゲル粒子
DESCRIPTION OF SYMBOLS 1 Dehumidification sheet 2a, 2b Nonwoven fabric sheet 3 Adhesion part 4 Rectangular space part 5 Spherical B type silica gel particle

Claims (3)

二枚の不織布シートを、それらのシートの周縁と、その内側に格子状に接着部を設けて貼り合わせることによって、接着部と接着部との間に、一辺の長さが2〜10cmの範囲にある長方形の空間部を形成し、その空間部に球状B型シリカゲル粒子を収容した除湿シートであって、球状B型シリカゲル粒子の粒子径が3〜5mmの範囲にあることを特徴とする除湿シート。   Two non-woven sheets are bonded to each other by providing a bonding portion in a lattice shape on the inner periphery of the non-woven sheets, and the length of one side is 2 to 10 cm between the bonding portion and the bonding portion. Is a dehumidifying sheet in which spherical B-type silica gel particles are accommodated in the rectangular space and the spherical B-type silica gel particles have a particle diameter in the range of 3 to 5 mm. Sheet. 球状B型シリカゲル粒子のゆるみ嵩密度が0.45〜0.55g/cm3の範囲にある請求項1に記載の除湿シート。 The dehumidifying sheet according to claim 1, wherein the loose bulk density of the spherical B-type silica gel particles is in the range of 0.45 to 0.55 g / cm 3 . 前記二枚の不織布シートの少なくとも一方の表面に備長炭の粉末が塗布してある請求項1に記載の除湿シート。   The dehumidifying sheet according to claim 1, wherein a powder of Bincho charcoal is applied to at least one surface of the two nonwoven fabric sheets.
JP2013003562U 2013-06-24 2013-06-24 Dehumidifying sheet Expired - Lifetime JP3185818U (en)

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