JPH048055B2 - - Google Patents
Info
- Publication number
- JPH048055B2 JPH048055B2 JP59128238A JP12823884A JPH048055B2 JP H048055 B2 JPH048055 B2 JP H048055B2 JP 59128238 A JP59128238 A JP 59128238A JP 12823884 A JP12823884 A JP 12823884A JP H048055 B2 JPH048055 B2 JP H048055B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- moisture
- layer
- metal layers
- capacitance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 229910052751 metal Inorganic materials 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 35
- 239000003990 capacitor Substances 0.000 claims description 27
- 238000010521 absorption reaction Methods 0.000 claims description 24
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 230000027939 micturition Effects 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 238000009774 resonance method Methods 0.000 description 3
- 210000002700 urine Anatomy 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- 206010012444 Dermatitis diaper Diseases 0.000 description 2
- 208000003105 Diaper Rash Diseases 0.000 description 2
- 206010016326 Feeling cold Diseases 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 208000004210 Pressure Ulcer Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 206010011985 Decubitus ulcer Diseases 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は水分吸着状態を確認することが可能な
使いすておむつに関し、特には幼児又は寝た切り
老人等が用便をした場合に第三者が水分量を感知
して必要に応じて直ちに取り替えをすることがで
きるおむつに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to disposable diapers whose water adsorption state can be checked, and particularly to disposable diapers that can be used by a third party when an infant or a bedridden elderly person uses the toilet. The present invention relates to a diaper that can sense the amount of moisture in the diaper and change it immediately if necessary.
従来の技術
近年老齢化社会が進行し、又近代医学の進歩に
よつて長寿者が増加する一方で、所謂「寝た切り
老人」が増える傾向にある。老人病院においては
その３割以上が前記「寝た切り老人」によつて占
められているともいわれ、これらの患者の看護に
あたつては尿、便の処理が大きな問題であり、こ
の尿、便のうち尿だけでも簡単に処理できれば患
者及び看護人の負担軽減につながるものと考えら
れる。BACKGROUND OF THE INVENTION In recent years, as society ages and the number of people living longer lives increases due to advancements in modern medicine, there is a tendency for the number of so-called ``sleepy old people'' to increase. It is said that more than 30% of the patients in geriatric hospitals are occupied by the above-mentioned "bedridden elderly," and the disposal of urine and feces is a major problem when caring for these patients. It is thought that if urine in stool can be easily disposed of, it will lead to a reduction in the burden on patients and nurses.
従来より一般的な尿の処置方法は、おむつを中
心とした装具による自然排尿後の処置と、バルー
ン・カテーテル等による留置カテーテルの装用に
よる持続的な排尿の処置とに大別される。上記装
具により処置に関して更に述べると、患者、老人
又は幼児がいつ用便を行なつたか不明であるの
で、看護人は時間を区切つて多数の患者のおむつ
を一斉に取り替える等の処置を行なつているのが
現状である。しかしながら、このような処置を行
なつた場合、患者によつては長時間用便をしたま
まの状態が継続することになり、不快感をもたら
すとともに、おむつかぶれ、冷え、床ずれ等の苦
痛を与える結果となつている。 Conventional methods for treating urine are broadly divided into treatment after natural urination using devices such as diapers, and treatment for continuous urination using an indwelling catheter such as a balloon catheter. To further discuss the treatment using the above-mentioned orthosis, since it is unknown when the patient, elderly person, or infant relieves themselves, the nurse may divide the time into sections and perform measures such as changing the diapers of many patients at once. The current situation is that However, when such treatment is performed, some patients may have to defecate for a long time, causing discomfort and causing pain such as diaper rash, coldness, and pressure sores. This is the result.
一方、排泄物中に含まれる水分を利用して感知
する手段として、おむつ中に電線等電気良導体を
設置し、その電気伝導度の変化を感知して外部に
警報信号を発する試み（例えば、実開昭59−
37555号公報参照）もなされている。このような
装置の場合、用便の有無は判定できても、おむつ
の濡れ具合の程度まで検知することができないの
で、本出願人は、先に第６図及び第７図に示す水
分量を感知可能なおむつを考案し出願している
（実願昭59−71558号）。同図において１は水分透
過性の表面シート、２は吸水層、３は水分不透過
性の裏面シートで、この裏面シート３の一端部３
ａ，３ａは吸水層２を覆うように折り曲げられて
おり、その両側より挟着するように金属層４，４
を付着した構成となつている。５，５は金属層
４，４から導出したリード線である。このような
構成によれば吸水層２をはさむ裏面シート３、金
属層４，４によつてコンデンサが形成されて、吸
水層２の水分吸着量によつてコンデンサの静電容
量が変化するので、リード線５，５を別途設けた
測定器に接続して前記静電容量の変化を測定すれ
ば、吸水層２への水分吸着量が定量的に求められ
る。 On the other hand, as a means of sensing using the moisture contained in excrement, attempts have been made to install a good electrical conductor such as an electric wire inside the diaper, and to detect changes in its electrical conductivity and issue an alarm signal to the outside (for example, 1977-
(Refer to Publication No. 37555) has also been made. In the case of such a device, although it is possible to determine the presence or absence of urination, it is not possible to detect the degree of wetness of the diaper. He devised and filed a patent application for a sensing diaper (Utility Application No. 59-71558). In the figure, 1 is a moisture permeable top sheet, 2 is a water absorption layer, 3 is a moisture impermeable back sheet, and one end 3 of this back sheet 3.
a, 3a are bent so as to cover the water absorption layer 2, and metal layers 4, 4 are sandwiched from both sides thereof.
It has a structure with attached. 5, 5 are lead wires led out from the metal layers 4, 4. According to such a configuration, a capacitor is formed by the back sheet 3 and the metal layers 4, which sandwich the water absorbing layer 2, and the capacitance of the capacitor changes depending on the amount of water adsorbed by the water absorbing layer 2. By connecting the lead wires 5, 5 to a separately provided measuring device and measuring the change in capacitance, the amount of water adsorbed to the water absorption layer 2 can be quantitatively determined.
発明が解決しようとする問題点
上記した如き従来の手段によれば、前者即ち時
間を区切つて一斉に装具を取り換えた場合、患者
によつては長時間用便をしたままの状態が継続す
ることにより、不快感をもたらすとともに、おむ
つかぶれ、冷え、床ずれ等の苦痛を与える結果と
なる。Problems to be Solved by the Invention According to the conventional means as described above, in the former case, that is, when the orthoses are replaced all at once at intervals, some patients may continue to defecate for a long time. This results in discomfort and pain such as diaper rash, coldness, bedsores, etc.
後者即ち、コンデンサの静電容量の変化を利用
した手段によれば、吸水層２への水分吸着量が判
定できるので、取替えを要する患者のみのおむつ
を取替えることができて、患者に不快感を与えな
い使用状態が得られる利点があるが、使用状態に
よつては、コンデンサの電極を構成する金属層
４，４の距離が変化することがあり、測定した静
電容量が変化することがある。即ち、静電容量は
対向電極となる金属層４，４の面積と吸水層２の
誘電率の積に比例し、対向電極４，４間の距離に
逆比例するので、上記した測定結果が出ることに
なる。 According to the latter method, which utilizes changes in the capacitance of a capacitor, it is possible to determine the amount of moisture adsorbed to the water absorbing layer 2, making it possible to change only the diapers of patients who need them, without causing discomfort to the patient. However, depending on the usage conditions, the distance between the metal layers 4, 4 forming the electrodes of the capacitor may change, and the measured capacitance may change. . That is, the capacitance is proportional to the product of the area of the metal layers 4, 4 serving as the opposing electrodes and the dielectric constant of the water absorption layer 2, and is inversely proportional to the distance between the opposing electrodes 4, 4, so the above measurement results are obtained. It turns out.
問題点を解決するための手段
本発明は上記の如き従来の使い捨ておむつ、特
にコンデンサの静電容量の変化を利用して水分量
を感知可能な使い捨ておむつの改良に関し、装具
の使用状態に影響されずに、静電容量が常時正確
に測定できる使い捨ておむつの提供を目的として
おり、この目的を達成するために前記した如き表
面シート、裏面シート及び両シート間に吸水層を
具備したおむつ構造において、吸水層に面した水
分不透過性の裏面シートの同一平面上に、おむつ
の長手方向に沿つて一定の間隔を保持して平行に
伸びる二列の金属層を付着形成し、一方側の金属
層の表面上に電気絶縁層を被覆させて、両金属層
と電気絶縁層及び吸水層とによつてコンデンサを
形成した構造を有し、両金属層間に交流電圧を印
加することにより吸水層の静電容量変化を検知し
て、吸水層内の水分吸着状態の程度を確認するこ
とを特徴とする水分量を感知可能な使いすておむ
つを得ることを主眼としている。Means for Solving the Problems The present invention relates to the improvement of conventional disposable diapers as described above, particularly disposable diapers that can sense moisture content using changes in the capacitance of capacitors, and are concerned with improvements to disposable diapers that can sense moisture content by utilizing changes in the capacitance of capacitors. The purpose of the present invention is to provide a disposable diaper whose capacitance can be accurately measured at all times, and in order to achieve this purpose, in a diaper structure having a top sheet, a back sheet, and a water absorbing layer between both sheets as described above, On the same plane of the moisture-impermeable back sheet facing the water-absorbing layer, two rows of metal layers extending parallel to each other at a constant interval along the longitudinal direction of the diaper are adhered and formed, and one metal layer is formed on one side. It has a structure in which an electrically insulating layer is coated on the surface of the metal layer, and a capacitor is formed by the two metal layers, the electrically insulating layer, and the water absorbing layer. The main objective is to obtain a disposable diaper capable of sensing moisture content, which is characterized by detecting changes in capacitance and confirming the degree of moisture adsorption in the water absorption layer.
作 用
上記の構成としたことによつて前記２列の金属
層と一方側の金属層の表面上を被覆した電気絶縁
層及び吸水層によつてコンデンサが形成されると
ともに、吸水層がコンデンサの一部としての機能
を有しており、従つて金属層間に位置する吸水層
内への水分吸着状態に応じて変化するコンデンサ
の静電容量を測定することによつて、水分量即
ち、吸水層内の水分吸着状態の程度が感知可能と
なり、しかも前記金属層が吸水層に面した水分不
透過性の裏面シートの同一平面上に平行に付着形
成されているので、使用状態によつて金属層の距
離が変化することがなく、安定した測定が行える
という作用をもたらすものである。Effect With the above structure, a capacitor is formed by the two rows of metal layers and the electrical insulating layer and water absorption layer that coat the surface of the metal layer on one side, and the water absorption layer is formed by the water absorption layer of the capacitor. By measuring the capacitance of the capacitor, which changes depending on the state of moisture adsorption in the water absorption layer located between the metal layers, it is possible to determine the amount of moisture in the water absorption layer. The degree of water adsorption within the water absorbing layer can be detected, and since the metal layer is formed in parallel on the same plane of the moisture-impermeable back sheet facing the water absorbing layer, the metal layer may change depending on the usage conditions. This provides the effect that stable measurements can be performed without any change in the distance between the two.
実施例
以下図面に基づいて本発明の詳細な説明を行
う。EXAMPLES The present invention will be described in detail below based on the drawings.
第１図は本発明に係る使いすておむつの一実施
例を示す平面図、第２図は第１図の−線断面
図、第３図は第２図の−線拡大断面図であ
る。図中１１は水分透過性の表面シート、１２は
吸水層、１３は水分不透過性の裏面シートであ
る。表面シート１１は目付量が10〜30ｇ／m2のレ
ーヨン、ポリプロピレン、ポリエステル繊維など
の不織布又は厚さ50μm以下のデボシングされ、
かつ、多孔化させたプラスチツクフイルムであ
り、吸水層１２は綿状パルプ、テイツシユペーパ
ー、超吸水性ポリマー等から成る構造体であり、
裏面シート１３は厚さ30μm以下のポリエチレン、
ポリプロピレン、ポリエステル等のプラスチツク
フイルムである。更に第１図、第２図に示す如く
吸水層１２に面した裏面シート１３の同一平面上
に、おむつの長手方向に沿つて一定の間隔を保持
して平行に伸びる二列の金属層１４，１５が付着
形成されている。該金属層１４，１５はアルミニ
ウム、亜鉛、銅、錫などの素材をラミネート又は
蒸着によつて裏面シート１３上に薄膜状に付着さ
せたものである。上記金属層１４，４５の中で一
方側の金属層１５の表面上は第３図に示した如く
電気絶縁層１６で被覆されている。金属層１４，
１５は裏面シート１３の端部にまで達するように
形成されており、リード線１７，１８を導出して
別途設けた測定器に接続して静電容量を測定す
る。前記金属層１４，１５はその幅寸法が３mm〜
30mm程度で、おむつの全長に対して50％以上の長
さを保有することが望ましい。また、金属層１
４，１５を裏面シート１３上にラミネートする場
合は、厚さが5μm〜15μmの金属箔を用いるのが
良く、蒸着法を用いて形成する場合は１×10-2
Torr以上の高真空下で真空蒸着させることが望
ましい。電気絶縁層１６はシリコン樹脂、アクリ
ル樹脂、ポリアミド樹脂、ニトリルゴム、ワツク
ス、けい酸ソーダ、ポリビニルアルコール、酢ビ
等を用いて厚み5μm以下の薄膜を形成すれば良
い。 FIG. 1 is a plan view showing an embodiment of the disposable diaper according to the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is an enlarged sectional view taken along the line -- in FIG. In the figure, 11 is a water-permeable top sheet, 12 is a water-absorbing layer, and 13 is a water-impermeable back sheet. The top sheet 11 is made of a nonwoven fabric such as rayon, polypropylene, or polyester fiber with a basis weight of 10 to 30 g/m 2 or debossed with a thickness of 50 μm or less,
And, it is a porous plastic film, and the water absorbing layer 12 is a structure made of cotton pulp, tissue paper, super absorbent polymer, etc.
The back sheet 13 is made of polyethylene with a thickness of 30 μm or less,
Plastic film made of polypropylene, polyester, etc. Further, as shown in FIGS. 1 and 2, on the same plane of the back sheet 13 facing the water absorption layer 12, two rows of metal layers 14 are provided which extend parallel to each other at a constant interval along the longitudinal direction of the diaper. 15 is attached and formed. The metal layers 14 and 15 are formed by depositing materials such as aluminum, zinc, copper, and tin in the form of a thin film on the back sheet 13 by lamination or vapor deposition. The surface of the metal layer 15 on one side of the metal layers 14 and 45 is covered with an electrically insulating layer 16 as shown in FIG. metal layer 14,
15 is formed so as to reach the end of the back sheet 13, and lead wires 17 and 18 are led out and connected to a separately provided measuring device to measure the capacitance. The width of the metal layers 14 and 15 is 3 mm to 3 mm.
It is desirable to have a length of approximately 30 mm, which is at least 50% of the total length of the diaper. In addition, metal layer 1
When laminating 4 and 15 on the back sheet 13, it is best to use metal foil with a thickness of 5 μm to 15 μm, and when laminating using a vapor deposition method, a metal foil with a thickness of 1×10 −2
It is desirable to perform vacuum deposition under a high vacuum of Torr or higher. The electrical insulating layer 16 may be formed into a thin film of 5 μm or less in thickness using silicone resin, acrylic resin, polyamide resin, nitrile rubber, wax, sodium silicate, polyvinyl alcohol, vinyl acetate, or the like.
上記の構成によれば、二列の金属層１４，１５
と電気絶縁層１６及び吸水層によつてコンデンサ
が形成されて、前記吸水層がコンデンサの一部と
しての機能をするため、該吸水層１２の水分吸着
量によつてコンデンサの静電容量が変化すること
になるので、前記した如くリード線１７，１８が
接続された測定器によつて静電容量の変化を測定
すれば吸水層１２への水分吸着量即ち、おむつの
濡れの程度が定量的に求められる。 According to the above configuration, two rows of metal layers 14, 15
A capacitor is formed by the electrical insulating layer 16 and the water absorption layer, and since the water absorption layer functions as a part of the capacitor, the capacitance of the capacitor changes depending on the amount of moisture adsorbed by the water absorption layer 12. Therefore, if the change in capacitance is measured using a measuring device to which the lead wires 17 and 18 are connected as described above, the amount of moisture adsorbed to the water absorption layer 12, that is, the degree of wetness of the diaper can be quantitatively determined. is required.
上記静電容量の測定方法は種々の手段がある
が、主な方法としてJIS−C5102（電子機器用固定
コンデンサの試験方法）に規定されている交流ブ
リツジ法、並列共振法及び直列共振法などが用い
られる。第４図には直列共振法に基づく測定回路
を例示する。図中２１は前記した構成に基づいて
おむつ内に形成されたコンデンサ、２２は同調用
可変コンデンサ、２３は電子電圧計、２４は一定
インダクタンスのコイル、２５は結合抵抗、２６
は高周波電流計、２７は交流電源を示す。前記コ
ンデンサ２１の静電容量Qxは以下の如く測定す
る。まず交流電源２７の周波数に相応するインダ
クタンスをもつコイル２４を選択して、交流電源
２７の周波数が特定値となるように調整し、次に
同調用可変コンデンサ２２を調整して電子電圧計
２３が最大となる点Q1を求め、その時の可変コ
ンデンサ２２の静電容量C1を読み取る。次にコ
ンデンサ２１と可変コンデンサ２２を並列に接続
した後、前記と同様にして電子電圧計２３が最大
となる点Q2を求め、その時の可変コンデンサ２
２の静電容量C2を読み取る。その結果コンデン
サ６の静電容量Qxは
Qx＝C1−C2 ……(1)
で求められる。 There are various methods for measuring the above capacitance, but the main methods include the AC bridge method, parallel resonance method, and series resonance method specified in JIS-C5102 (Testing method for fixed capacitors for electronic equipment). used. FIG. 4 illustrates a measurement circuit based on the series resonance method. In the figure, 21 is a capacitor formed in the diaper based on the above-described configuration, 22 is a variable tuning capacitor, 23 is an electronic voltmeter, 24 is a constant inductance coil, 25 is a coupling resistor, 26
27 indicates a high frequency ammeter, and 27 indicates an AC power supply. The capacitance Qx of the capacitor 21 is measured as follows. First, a coil 24 with an inductance corresponding to the frequency of the AC power source 27 is selected, and the frequency of the AC power source 27 is adjusted to a specific value.Next, the variable tuning capacitor 22 is adjusted, and the electronic voltmeter 23 is adjusted. Find the maximum point Q1 and read the capacitance C1 of the variable capacitor 22 at that point. Next, after connecting the capacitor 21 and the variable capacitor 22 in parallel, find the point Q2 at which the electronic voltmeter 23 becomes maximum in the same manner as above, and then
Read the capacitance C2 of 2. As a result, the capacitance Qx of the capacitor 6 can be obtained as Qx=C1−C2 (1).
上記如くして測定した静電容量Qxの値は、吸
水層１２内の水分吸着量に応じて変動することに
なる。即ち第５図に示す如く水分量（％）とQx
とも相関グラフが得られ、吸水層１２の、換言す
ればおむつ濡れ具合によつて静電容量Qxの値が
異なるものである。 The value of the capacitance Qx measured as described above varies depending on the amount of water adsorbed within the water absorption layer 12. In other words, as shown in Figure 5, the moisture content (%) and Qx
In both cases, a correlation graph is obtained, and the value of the capacitance Qx differs depending on the wetness of the water absorption layer 12, in other words, the diaper wetness.
発明の効果
以上詳細に本発明に係る水分量を感知可能な使
いすておむつの構成及び動作に関して説明してき
たが、本発明を用いることによつて、以下に記す
各種利点及び作用効果をもたらすことができる。
即ち、２列の金属層と一方側の金属層の表面上を
被覆した電気絶縁層及び吸水層によつてコンデン
サが形成されるとともに、吸水層がコンデンサの
一部としての機能を有しており、従つて金属層間
に位置する吸水層内への水分吸着状態に応じて変
化するコンデンサの静電容量を測定することによ
つて、水分量即ち、吸水層内の水分吸着状態の程
度が感知可能となる。しかも前記金属層が吸水層
に面した水分不透過性の裏面シートの同一平面上
に平行に付着形成されているので、使用状態によ
つてコンデンサの電極を構成する金属層の距離が
変化することがないので、測定した静電容量の変
動がなく、常時正確な測定結果が得られる。ま
た、おむつ自体の構成が比較的簡易に得られ、か
つ、２列の金属層をラミネート又は蒸着によつて
強力に付着形成させることによつて装着時の屈曲
又は人体の移動によつて断線が発生することがな
い。そのため、患者、老人、幼児等が多数収容さ
れた病院等において本発明に係る使い捨ておむつ
を用いた場合、個人的に水分量を感知可能なメー
タ及び警報器を併用することによつて、用便を行
つた患者名及び用便量がおむつの取替えを要する
程度のものであるか否かを直ちに判定することが
できる利点がある。よつて、当該患者のみのおむ
つを取替えることができるので患者に不快感を与
えることもなく、衛生上からも好ましい使用状態
が得られ、しかも不必要な取替作業を行わずとも
済むので経済上から有利である。使用後のおむつ
は焼却処理が可能であり、使いすておむつとして
極めて有効に用いることができる。Effects of the Invention The structure and operation of the disposable diaper capable of sensing moisture content according to the present invention has been explained in detail above, and by using the present invention, various advantages and effects described below can be brought about. I can do it.
In other words, a capacitor is formed by the two rows of metal layers and the electrical insulating layer and water absorption layer that cover the surface of the metal layer on one side, and the water absorption layer functions as a part of the capacitor. Therefore, by measuring the capacitance of the capacitor, which changes depending on the state of water adsorption in the water absorption layer located between the metal layers, it is possible to detect the amount of water, that is, the degree of water adsorption in the water absorption layer. becomes. Moreover, since the metal layers are adhered and formed in parallel on the same plane of the moisture-impermeable back sheet facing the water absorption layer, the distance between the metal layers constituting the electrodes of the capacitor changes depending on the usage condition. Since there is no fluctuation in the measured capacitance, accurate measurement results can always be obtained. In addition, the structure of the diaper itself can be obtained relatively easily, and by strongly adhering two rows of metal layers by laminating or vapor deposition, there is no disconnection due to bending during wearing or movement of the human body. Never occurs. Therefore, when the disposable diaper according to the present invention is used in a hospital or the like where many patients, the elderly, infants, etc. This method has the advantage of being able to immediately determine the name of the patient who underwent the procedure and whether or not the amount of fecal matter required the diaper to be changed. Therefore, since only the patient's diaper can be changed, the patient does not feel uncomfortable, and the usage conditions are favorable from a hygienic standpoint.In addition, unnecessary diaper changing work is not required, which is economical. It is advantageous from Diapers after use can be incinerated and can be used extremely effectively as disposable diapers.
第１図は本発明に係る水分量を感知可能な使い
すておむつを示す平面図、第２図は第１図の−
線に沿う断面図、第３図は第２図の−線に
沿う拡大断面図、第４図は静電容量を測定する回
路図、第５図は水分量と静電容量との相関を示す
特性グラフ、第６図は従来の水分量を感知可能な
使い捨ておむつを示す平面図、第７図は第６図の
−線に沿う断面図である。
１１……表面シート、１２……吸水層、１３…
…裏面シート、１４，１５……金属層、１６……
電気絶縁層、１７，１８……リード線。
FIG. 1 is a plan view showing a disposable diaper capable of sensing moisture content according to the present invention, and FIG.
Figure 3 is an enlarged cross-sectional view taken along the - line in Figure 2, Figure 4 is a circuit diagram for measuring capacitance, and Figure 5 shows the correlation between water content and capacitance. The characteristic graph, FIG. 6 is a plan view showing a conventional disposable diaper capable of sensing moisture content, and FIG. 7 is a sectional view taken along the - line in FIG. 6. 11...Top sheet, 12...Water absorption layer, 13...
...Back sheet, 14, 15...Metal layer, 16...
Electrical insulation layer, 17, 18...Lead wire.
Claims (1)
裏面シートと、前記両シートの間に位置する吸水
層とを少なくとも具備した使いすておむつ構造に
おいて、 吸水層に面した水分不透過性の裏面シートの同
一平面上に、おむつの長手方向に沿つて一定の間
隔を保持して平行に伸びる二列の金属層を付着形
成し、一方側の金属層の表面上に電気絶縁層を被
覆させて、両金属層と電気絶縁層及び吸水層とに
よつてコンデンサを形成した構造を有し、両金属
層間に交流電圧を印加することにより吸水層の静
電容量変化を検知して、吸水層内の水分吸着状態
の程度を確認することを特徴とする水分量を感知
可能な使いすておむつ。[Scope of Claims] 1. A disposable diaper structure comprising at least a moisture-permeable top sheet, a moisture-impermeable back sheet, and a water-absorbing layer located between the two sheets, wherein a surface of the water-absorbing layer is provided. On the same plane of the moisture-impermeable back sheet, two rows of metal layers extending parallel to each other at a constant interval along the longitudinal direction of the diaper are adhered and formed, and on the surface of the metal layer on one side. It has a structure in which a capacitor is formed by covering both metal layers with an electrical insulating layer and a water absorbing layer, and by applying an alternating current voltage between both metal layers, the capacitance of the water absorbing layer changes. A disposable diaper capable of sensing moisture content, which is characterized in that the degree of moisture adsorption in the water absorption layer is confirmed by detecting the moisture content.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59128238A JPS616302A (en) | 1984-06-20 | 1984-06-20 | Moisture content sensible disposable diaper |
| US06/743,748 US4653491A (en) | 1984-06-20 | 1985-06-12 | Water content sensing and informing system for a disposable diaper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59128238A JPS616302A (en) | 1984-06-20 | 1984-06-20 | Moisture content sensible disposable diaper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS616302A JPS616302A (en) | 1986-01-13 |
| JPH048055B2 true JPH048055B2 (en) | 1992-02-13 |
Family
ID=14979905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59128238A Granted JPS616302A (en) | 1984-06-20 | 1984-06-20 | Moisture content sensible disposable diaper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS616302A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62139519U (en) * | 1986-02-27 | 1987-09-03 | ||
| JPS63149906U (en) * | 1987-03-23 | 1988-10-03 | ||
| JPH02174846A (en) * | 1988-12-28 | 1990-07-06 | Kyohei Mizushima | Leakage detection system of diaper |
| KR0143873B1 (en) * | 1993-02-19 | 1998-08-17 | 순페이 야마자끼 | Fabrication insulation film and semiconductor device |
| JP2004041697A (en) * | 2003-03-31 | 2004-02-12 | Denso Corp | Urine detection device |
| DK178086B1 (en) * | 2013-07-12 | 2015-05-11 | Suma Care Aps | System for measuring the amount of urine and faeces in a diaper |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937555B2 (en) * | 1979-11-09 | 1984-09-10 | 日本電気ホームエレクトロニクス株式会社 | Manufacturing method of double-sided electroluminescent lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937555U (en) * | 1982-09-02 | 1984-03-09 | 日東電工株式会社 | Water leak detector |
-
1984
- 1984-06-20 JP JP59128238A patent/JPS616302A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937555B2 (en) * | 1979-11-09 | 1984-09-10 | 日本電気ホームエレクトロニクス株式会社 | Manufacturing method of double-sided electroluminescent lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS616302A (en) | 1986-01-13 |
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| EXPY | Cancellation because of completion of term |