JP4309982B2

JP4309982B2 - Test method for moisture transfer characteristics of futon

Info

Publication number: JP4309982B2
Application number: JP32261398A
Authority: JP
Inventors: 美勝川島
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-12
Filing date: 1998-11-12
Publication date: 2009-08-05
Anticipated expiration: 2018-11-12
Also published as: JP2000146946A

Description

【０００１】
【発明の属する技術分野】
本発明は、ふとんの性能試験に関し、特に、ふとんの水分移動特性の試験方法に関する。
【０００２】
【従来の技術】
ふとんの吸湿性、放湿性と透湿性を水分移動特性と総称している。ふとんの吸湿性と放湿性は就寝時の快適性、寝心地に影響を及ぼすと見られている。睡眠中の人体からは一晩に１００ＣＣ程度の水分が放出されている。皮膚から蒸発した水分は一部はふとんに吸収され、一部はふとんを透過して周囲の環境に放出されていく。
【０００３】
ふとんの吸湿性や透湿性が悪いと、皮膚近傍の空気の湿度が高くなり、皮膚から出た汗は蒸発しないでそのまま皮膚に留まるか、ふとんに水滴のままで吸収されてしまう。こうなると汗の体温調節の操作機能に支障をきたし寝苦しくなる。
【０００４】
このようにふとんの性能については吸湿性、放湿性と透湿性を考えていく必要があるが、それらの試験方法は未だ確立されておらず、容易に行える簡潔で的確な試験方法が強く要望されている。
【０００５】
また、消費者においても、試験方法が確立されておらず品質表示がないためふとんの品質レベルが全く分からないという問題があり、その意味からも試験方法を確立していく必要がある。
【０００６】
【発明が解決しようとする課題】
本発明は、上記に鑑みてなされたものであって、簡潔で的確なふとんの水分移動特性の試験方法を提供することを目的とする。
【０００７】
【課題を解決するための手段】
そこで本発明のふとんの水分移動特性の試験方法は、水の注がれた水槽の上方に設置され底面に金網が張られた試料ケースに収納されたふとん試料の重量Ｗ２を予め定めた時間測定し、前記ふとん試料の重量Ｗ２が一定値になったときの重量を求め吸湿性試験を行うことを特徴とする。
【０００８】
また、前記ふとん試料の重量Ｗ２が一定値となったときの重量をふとん試料の単位面積当りに換算し、該換算した数値（ｇ／ｍ^２）をふとんの吸湿性の評価値とすることを特徴とする。
【０００９】
また、底面に金網が張られふとん試料が収納された試料ケースを上方に設置し水の注がれた水槽の重量Ｗ１を予め定めた時間測定し、前記水槽の重量Ｗ１の変化速度が一定になったときの重量の変化速度を求め透湿性試験を行うことを特徴とする。
【００１０】
また、前記水槽の重量Ｗ１の変化速度が一定値となったときの重量の変化速度をふとん試料の単位面積・単位時間当りに換算し、該換算した数値（ｇ／ｍ^２ｈ）をふとんの透湿性の評価値とすることを特徴とする。
【００１１】
また、水の注がれた水槽の上方に設置され底面に金網が張られた試料ケースにふとん試料を収納し予め定めた時間放置し、予め定めた時間放置後、前記ふとん試料は前記試料ケースに収納したままで前記水槽からの水分の蒸発を遮断して、予め定めた時間放置後の前記ふとん試料の重量Ｗ４を予め定めた時間測定し、前記ふとん試料の重量Ｗ４を測定し始めた瞬間における重量変化速度が維持されたと仮定した際に、前記ふとん試料の重量Ｗ４が最終的に観測される一定値になるまでにかかった時間を求め放湿性試験を行うことを特徴とする。
【００１２】
さらに、前記ふとん試料の重量Ｗ４が前記一定値になるまでにかかった時間をふとんの放湿性の評価値とすることを特徴とする。
【００１３】
【発明の実施の形態】
以下、本発明の実施の形態について説明する。
【００１４】
ふとんの水分移動特性とは、人体から出た水分がふとんの内部に移動して環境に放散していく性能で、吸湿性、透湿性と放湿性の総称である。吸湿性は、ふとんの水分移動特性のうち、ふとんが水分を吸う性能であり、透湿性は、ふとんの水分移動特性のうち、水分がふとんを透過する性能であり、放湿性は、ふとんの水分移動特性のうち、水分がふとんから放散する性能である。
【００１５】
従って、ふとんの水分移動特性試験として、ふとんの吸湿性を試験する吸湿性試験と、ふとんの透湿性を試験する透湿性試験と、ふとんの放湿性を試験する放湿性試験とを行うこととする。
【００１６】
図１は、本発明に関わるふとんの水分移動特性試験装置の全体構造を説明するための側面図を示す。ふとんの水分移動特性試験装置は、主に、蒸留水１２が入れられる水槽１０と、水槽１０の上方に独立して設置された試料ケース２０と、水槽１０の下部に設けられ支持枠１１により支持される例えば秤量２０ｋｇ、感量０．１ｇのＷ１重量計１５と、試料ケース２０を支持する支持枠２１が上部に乗せられた例えば秤量２０ｋｇ、感量０．１ｇのＷ２重量計２５と、表示器３１を有するデータ収録装置３０とで構成されている。
【００１７】
試料ケース２０は、底面に金網２２が張られふとん試料４０を収納するもので、試料ケース２０と水槽１０の間は互いに重量変化を及ぼさないように柔軟なプラスチック製のフィルム２３で上下にゆるみを付けて囲う。なお、フィルム２３は、ポリエチレン、塩化ビニル樹脂、ポリ塩化ビニリデンなどを使用する。
【００１８】
水槽１０と試料ケース２０は、それぞれ独立してＷ１重量計１５とＷ２重量計２５に乗せられており、水槽１０の重量変化とふとん試料４０の重量変化を測定することができる。
【００１９】
データ収録装置３０は、Ｗ１重量計１５とＷ２重量計２５との出力を入力し測定記録すると共に、測定記録した値より計算処理を行い、表示器３１には測定記録した値や計算処理結果を表示することができる。
【００２０】
次に、本発明のふとんの水分移動特性試験装置による水分移動特性試験（吸湿性試験、透湿性試験、放湿性試験）につき説明する。
【００２１】
水分移動特性試験はふとん試料４０に供給される水分量とふとん試料４０に吸収される水分量を測定して、その差からふとん試料４０を透過する水分量を求める方法を用いる。
【００２２】
試験に供するふとん試料４０は、測定対象のふとんから、寸法４５０ｍｍ×４５０ｍｍ（±５ｍｍ）の試料を切取り、十分乾燥させた後、標準状態に２４時間以上放置してから試験を行う。また、充てん材料が羽毛の場合は、ふとんから切り取ったときばらばらになるため、同寸法で作った袋に入れ試験を行うこととする。
【００２３】
ふとんの水分移動特性試験装置の置かれる試験室は、温度（２０±２）℃、湿度（６５±２）％とし、かつ、無風（０．１ｍ／ｓｅｃ以下）の標準状態にする。
【００２４】
試験の方法は、水槽１０から蒸発した水分が試料ケース２０の底面からふとん試料４０に供給され、一部はふとん試料４０に吸収され残りはふとん試料４０を透過して上部空間に放散されることにより行うものである。
【００２５】
１．吸湿性、透湿性試験
１）測定
標準状態の試験室内にふとんの水分移動特性試験装置を設置する。水槽１０に室温と同じ温度の蒸留水約５ｌを注ぎＷ１重量計１５とＷ２重量計２５のゼロ点を調整し、試料ケース２０にふとん試料４０を静かに収納してＷ１重量計１５が検出する水槽１０の重量とＷ２重量計２５が検出するふとん試料４０の重量の測定記録をデータ収録装置３０にて開始する。その後、７２時間の水槽１０の重量変化と、ふとん試料４０の重量変化とをデータ収録装置３０にて測定記録する。
【００２６】
２）計算
Ｗ１重量計１５が検出する水槽１０の重量をＷ１（ｇ）、Ｗ２重量計２５が検出するふとん試料４０の重量をＷ２（ｇ）とすると、ふとん試料４０を透過する水分の重量Ｗ３（ｇ）は、Ｗ１ーＷ２（ｇ）となる。
【００２７】
図２は、ふとん試料４０の重量Ｗ２（ｇ）の時間経過に対する変化を示すグラフで、吸湿性特性を示す。重量Ｗ２（ｇ）は初めは大きく変化するが、やがて変化は停止し継続して一定値となる。この７２時間の間で一定値となった重量Ｗ２（ｇ）の数値Ａ（図２に図示）をふとん試料４０の単位面積当りに換算した数値（ｇ／ｍ^２）をふとんの吸湿性Ｑ１の評価値とする。
【００２８】
従って、吸湿性Ｑ１の計算は数１で行う。
【００２９】
【数１】

但し、Ａ；図２に示すＷ２（ｇ）の平衡値
０．２０１５；ふとん試料４０の面積（ｍ^２）
とする。
【００３０】
図３は、水槽１０の重量Ｗ１（ｇ）の時間経過に対する変化を示すグラフで、透湿性特性を示す。水槽１０の重量Ｗ１（ｇ）は初めは大きく変化するが、やがて変化速度が一定になる。このときふとん試料４０の重量Ｗ２（ｇ）も変化しなくなっているから、ふとん試料４０を透過する水分量は水槽１０の重量Ｗ１（ｇ）と一致する。この水槽１０の重量変化速度をふとんの単位面積・単位時間当りに換算した数値（ｇ／ｍ^２ｈ）をふとんの透湿性Ｑ２の評価値とする。
【００３１】
従って、透湿性Ｑ２の計算は数２で行う。
【００３２】
【数２】

但し、Ｃ／Ｂ；図３に示すＷ１（ｇ）の勾配値（ｇ／ｈ）
但し、Ｂは１２時間以上とする。
０．２０１５；ふとん試料４０の面積（ｍ^２）
とする。
【００３３】
２．放湿性試験
１）測定
吸湿性または透湿性試験において水分を吸湿したふとん試料４０を、標準状態の試験室内のふとんの水分移動特性試験装置に収納したままで、水槽１０からの水分の蒸発を遮断して、Ｗ２重量計２５より検出するふとん試料４０の重量Ｗ４（ｇ）をデータ収録装置３０にて測定記録する。
【００３４】
２）計算
図４は、ふとん試料４０の重量Ｗ４（ｇ）の時間経過に対する変化を示すグラフであり、吸湿性特性を示す。ふとん試料４０の重量Ｗ４（ｇ）は、初めは大きく変化するが、やがて変化しなくなる。この時間的変化から時定数Ｔ（ｈ）を求めて、ふとんの放湿性Ｑ３の評価値とする。
【００３５】
従って、放湿性Ｑ３は、Ｑ３＝Ｔ（ｈ）とする（時定数Ｔは図４に示す）。
【００３６】
以上の試験の記録は、
ａ）試験室の条件：湿度、温度
ｂ）ふとん試料４０試料の名称、充填物の材質、充填量、側生地の材質、寸法など
ｃ）測定結果ふとん試料４０の吸湿性（ｇ／ｍ^２）、透湿性（ｇ／ｍ^２ｈ）、放湿性（ｈ）
の項目を行うこととする。
【００３７】
以上述べたごとく、吸湿性試験は、ふとん試料４０の重量が一定値になったときの値を求め、透湿性試験は、水槽１０の重量の変化速度が一定になったときの値を求め、放湿性試験は、試料ケースにふとん試料を収納し予め定めた時間放置後のふとん試料４０の重量の時間的変化から時定数Ｔを求め行っている。
【００３８】
従って、試験モータなどの動力源や熱源を使うことなく、また、人手を要することなく、簡潔な装置を使用し、極めて簡潔な方法で的確に水分移動特性試験を行うことができる。
【００３９】
また、本試験方法の確立により品質表示が可能になり、消費者においても、ふとんの品質レベルを知るようにすることができる。
【００４０】
なお、上記実施例の試験方法はふとんの性能試験について述べたが、これに限定されることなく織物や不織布などに広く適用することもできる
【発明の効果】
本発明のふとんの水分移動特性の試験方法は、水の注がれた水槽の上方に設置され底面に金網が張られた試料ケースに収納されたふとん試料の重量Ｗ２を予め定めた時間測定し、前記ふとん試料の重量Ｗ２が一定値になったときの値を求め吸湿性試験を行うため、試験モータなどの動力源や熱源を使うことなく、また、人手を要することなく、簡潔な装置を使用し、極めて簡潔な方法で的確に水分移動特性試験を行うことができる。
【００４１】
また、前記ふとん試料の重量Ｗ２が一定値となったときの値をふとん試料の単位面積当りに換算し、該換算した数値（ｇ／ｍ^２）をふとんの吸湿性の評価値とするため、ふとんの吸湿性の評価を的確に行うようにすることができる。
【００４２】
また、底面に金網が張られふとん試料が収納された試料ケースを上方に設置し水の注がれた水槽の重量Ｗ１を予め定めた時間測定し、前記水槽の重量Ｗ１の変化速度が一定になったときの値を求め透湿性試験を行うため、試験モータなどの動力源や熱源を使うことなく、また、人手を要することなく、簡潔な装置を使用し、極めて簡潔な方法で的確に水分移動特性試験を行うことができる。
【００４３】
また、前記水槽の重量Ｗ１の変化速度が一定値となったときの値をふとん試料の単位面積・単位時間当りに換算し、該換算した数値（ｇ／ｍ^２ｈ）をふとんの透湿性の評価値とするため、ふとんの透湿性の評価を的確に行うようにすることができる。
【００４４】
また、水の注がれた水槽の上方に設置され底面に金網が張られた試料ケースにふとん試料を収納し予め定めた時間放置し、予め定めた時間放置後、前記ふとん試料は前記試料ケースに収納したままで前記水槽からの水分の蒸発を遮断して、予め定めた時間放置後の前記ふとん試料の重量Ｗ４を予め定めた時間測定し、前記ふとん試料の重量Ｗ４の時間的変化から時定数Ｔを求め放湿性試験を行うため、試験モータなどの動力源や熱源を使うことなく、また、人手を要することなく、簡潔な装置を使用し、極めて簡潔な方法で的確に水分移動特性試験を行うことができる。
【００４５】
さらに、前記ふとん試料の重量Ｗ４の時間的変化から求めた時定数Ｔをふとんの放湿性の評価値とするため、ふとんの放湿性の評価を的確に行うようにすることができる。
【００４６】
これらの試験方法の確立により品質表示が可能になり、消費者においても、ふとんの品質レベルを容易に知るようにすることができる。
【図面の簡単な説明】
【図１】本発明に関わるふとんの水分移動特性試験装置の全体構造を説明するための側面図を示す。
【図２】ふとん試料の重量Ｗ２（ｇ）の時間経過に対する変化を示すグラフで、吸湿性特性を示す。
【図３】水槽の重量Ｗ１（ｇ）の時間経過に対する変化を示すグラフで、透湿性特性を示す。
【図４】ふとん試料の重量Ｗ４（ｇ）の時間経過に対する変化を示すグラフで、放湿性特性を示す。
【符号の説明】
１０水槽
１２蒸留水
１５Ｗ１重量計
２０試料ケース
２２金網
２３フイルム
２５Ｗ２重量計
３０データ収録装置
４０ふとん試料[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a performance test for futons, and more particularly to a method for testing moisture transfer characteristics of futons.
[0002]
[Prior art]
The moisture-absorbing, moisture-releasing and moisture-permeable properties of futon are collectively referred to as moisture transfer characteristics. Futon's hygroscopic and hygroscopic properties are expected to affect bedtime comfort and comfort. About 100 CC of water is released from the sleeping human body overnight. A part of the water evaporated from the skin is absorbed in the futon, and a part of the moisture passes through the futon and is released to the surrounding environment.
[0003]
If the futon has poor hygroscopicity or moisture permeability, the air in the vicinity of the skin becomes highly humid, and the sweat from the skin does not evaporate and remains on the skin as it is or is absorbed in the form of water droplets. If this happens, the operation function of the body temperature control of sweat will be hindered and it will be hard to sleep.
[0004]
In this way, it is necessary to consider moisture absorption, moisture release and moisture permeability for futon performance, but their test methods have not yet been established, and there is a strong demand for simple and accurate test methods that can be easily performed. ing.
[0005]
In addition, consumers have a problem that the quality level of the futon is not known at all because the test method has not been established and there is no quality indication, and it is necessary to establish the test method also in that sense.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of the above, and an object of the present invention is to provide a simple and accurate method for testing the moisture movement characteristics of a futon.
[0007]
[Means for Solving the Problems]
Therefore, according to the test method of the moisture transfer characteristic of the futon of the present invention, the weight W2 of the futon sample stored in the sample case installed above the water tank in which water is poured and the bottom thereof is stretched is measured for a predetermined time. and the futon weight W2 of the sample and performing the hygroscopic test determined the weight when it becomes a constant value.
[0008]
Further, the weight when the weight W2 of the futon sample becomes a constant value is converted per unit area of the futon sample, and the converted numerical value (g / m ² ) is used as the evaluation value of the hygroscopic property of the futon. Features.
[0009]
In addition, a sample case in which a wire mesh is stretched on the bottom and a futon sample is stored is placed on the top, and the weight W1 of the water tank into which water has been poured is measured for a predetermined time, and the rate of change of the weight W1 of the water tank is constant. It is characterized in that a moisture permeability test is carried out by determining the rate of change in weight when it becomes.
[0010]
In addition, the rate of change of weight when the rate of change of the weight W1 of the water tank becomes a constant value is converted per unit area / unit time of the futon sample, and the converted numerical value (g / m ² h) is taken into account. An evaluation value of moisture permeability is used.
[0011]
In addition, the futon sample is stored in a sample case installed above the water tank into which water has been poured and a metal mesh is stretched on the bottom and left for a predetermined time. After being left for a predetermined time, the futon sample is stored in the sample case. Moment of evaporation from the water tank while being stored in the water tank, the weight W4 of the futon sample after being left for a predetermined time is measured for a predetermined time, and the moment when the weight W4 of the futon sample starts to be measured When it is assumed that the rate of weight change at is maintained, the time required for the weight W4 of the futon sample to finally reach a constant value is obtained, and a moisture release test is performed.
[0012]
Further characterized in that the futon weight W4 of the sample is the evaluation value of the moisture release futon the time taken until the certain value.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0014]
Futon moisture transfer characteristics are the ability of moisture from the human body to move into the futon and dissipate into the environment, and is a collective term for moisture absorption, moisture permeability and moisture release. Hygroscopicity is the ability of futons to absorb moisture among the moisture transfer characteristics of futons, and moisture permeability is the ability of moisture to permeate futons among moisture transfer characteristics of futons, and moisture release is the moisture of futons. Among the movement characteristics, it is the ability to dissipate moisture from the futon.
[0015]
Therefore, the moisture transfer property test of the futon shall include a hygroscopic test that tests the hygroscopicity of the futon, a moisture permeability test that tests the moisture permeability of the futon, and a moisture release test that tests the moisture release property of the futon. .
[0016]
FIG. 1 is a side view for explaining the overall structure of a futon moisture transfer characteristic test apparatus according to the present invention. The futon moisture transfer characteristic test apparatus is mainly supported by a water tank 10 containing distilled water 12, a sample case 20 installed independently above the water tank 10, and a support frame 11 provided at the lower part of the water tank 10. For example, a W1 weigh scale 15 having a weight of 20 kg and a sensitivity of 0.1 g, and a W2 weigh scale 25 having a weight of 20 kg and a sensitivity of 0.1 g, on which a support frame 21 supporting the sample case 20 is placed, are displayed. And a data recording device 30 having a device 31.
[0017]
The sample case 20 has a wire mesh 22 stretched on the bottom surface and accommodates a futon sample 40. The sample case 20 and the water tank 10 are loosened up and down with a flexible plastic film 23 so as not to change the weight of each other. Enclose. The film 23 uses polyethylene, vinyl chloride resin, polyvinylidene chloride, or the like.
[0018]
The water tank 10 and the sample case 20 are mounted on the W1 weight meter 15 and the W2 weight meter 25, respectively, and the weight change of the water tank 10 and the weight change of the futon sample 40 can be measured.
[0019]
The data recording device 30 inputs and outputs the outputs of the W1 weigh scale 15 and the W2 weigh scale 25, performs calculation processing from the measured and recorded values, and displays the measured and recorded values and calculation processing results on the display 31. Can be displayed.
[0020]
Next, a description will be given of a moisture transfer property test (a moisture absorption test, a moisture permeability test, a moisture release test) using the moisture transfer property test apparatus of the futon of the present invention.
[0021]
The moisture transfer characteristic test uses a method of measuring the amount of moisture supplied to the futon sample 40 and the amount of moisture absorbed by the futon sample 40 and determining the amount of moisture that permeates the futon sample 40 from the difference.
[0022]
For the futon sample 40 to be used for the test, a sample having a dimension of 450 mm × 450 mm (± 5 mm) is cut out from the futon to be measured, sufficiently dried, and then allowed to stand in a standard state for 24 hours or more before testing. In addition, if the filling material is feathers, it will fall apart when cut off from the futon, so the test will be conducted in a bag made of the same dimensions.
[0023]
The test chamber where the futon moisture transfer characteristic test apparatus is placed is set to a standard state of temperature (20 ± 2) ° C., humidity (65 ± 2)%, and no wind (0.1 m / sec or less).
[0024]
In the test method, water evaporated from the water tank 10 is supplied to the futon sample 40 from the bottom surface of the sample case 20, a part is absorbed by the futon sample 40, and the rest is transmitted through the futon sample 40 and diffused into the upper space. It is done by.
[0025]
1. Hygroscopicity and permeability test 1) Install a moisture transfer characteristic testing device in a standard test room. About 5 liters of distilled water having the same temperature as the room temperature is poured into the water tank 10, the zero points of the W1 weighing scale 15 and the W2 weighing scale 25 are adjusted, and the futon sample 40 is gently stored in the sample case 20 and the W1 weighing scale 15 detects it. The data recording device 30 starts measuring and recording the weight of the water tank 10 and the weight of the futon sample 40 detected by the W2 weigh scale 25. Thereafter, the data recording device 30 measures and records the change in the weight of the water tank 10 for 72 hours and the change in the weight of the futon sample 40.
[0026]
2) When the weight of the water tank 10 detected by the calculation W1 weigh scale 15 is W1 (g) and the weight of the futon sample 40 detected by the W2 weigh scale 25 is W2 (g), the weight W3 of the water that permeates the futon sample 40 (G) is W1-W2 (g).
[0027]
FIG. 2 is a graph showing changes in the weight W2 (g) of the futon sample 40 over time, and shows hygroscopic properties. The weight W2 (g) changes greatly at first, but the change stops and eventually becomes a constant value. The numerical value (g / m ² ) obtained by converting the numerical value A (shown in FIG. 2) of the weight W2 (g), which has become a constant value during the 72 hours, per unit area of the futon sample 40 is the hygroscopicity Q1 of the futon. The evaluation value.
[0028]
Accordingly, the calculation of the hygroscopic Q1 is performed by the equation 1.
[0029]
[Expression 1]

However, A; Equilibrium value of W2 (g) shown in FIG. 2 0.2015; Area of futon sample 40 (m ² )
And
[0030]
FIG. 3 is a graph showing a change in the weight W1 (g) of the water tank 10 with respect to time, and shows moisture permeability characteristics. The weight W1 (g) of the water tank 10 changes greatly at first, but eventually the change speed becomes constant. At this time, since the weight W2 (g) of the futon sample 40 also does not change, the amount of water that permeates the futon sample 40 coincides with the weight W1 (g) of the water tank 10. A numerical value (g / m ² h) obtained by converting the weight change rate of the water tank 10 per unit area / unit time of the futon is used as an evaluation value of the futon's moisture permeability Q2.
[0031]
Therefore, the calculation of the moisture permeability Q2 is performed by the following equation (2).
[0032]
[Expression 2]

However, C / B; gradient value (g / h) of W1 (g) shown in FIG.
However, B is 12 hours or more.
0.2015; Area of the futon sample 40 (m ² )
And
[0033]
2. Moisture release test 1) Measurement of moisture absorption or moisture permeability The moisture sample absorbed moisture in the futon sample 40 in the standard test room was stored in the moisture transfer characteristic test device of the futon in the standard condition, and the evaporation of moisture from the water tank 10 was blocked. Then, the weight W4 (g) of the futon sample 40 detected by the W2 weigh scale 25 is measured and recorded by the data recording device 30.
[0034]
2) Calculation FIG. 4 is a graph showing the change of the weight W4 (g) of the futon sample 40 over time and shows hygroscopic properties. The weight W4 (g) of the futon sample 40 changes greatly at first, but does not change soon. The time constant T (h) is obtained from this temporal change, and is used as the evaluation value of the futon moisture releasing property Q3.
[0035]
Accordingly, the moisture release Q3 is Q3 = T (h) (time constant T is shown in FIG. 4).
[0036]
The above test records are
a) Test chamber conditions: Humidity, temperature b) Futon sample 40 Sample name, filling material, filling amount, side fabric material, dimensions, etc. c) Measurement results Hygroscopicity of the futon sample 40 (g / m ² ) , Moisture permeability (g / m ² h), moisture release (h)
The following items will be performed.
[0037]
As described above, the hygroscopic test obtains a value when the weight of the futon sample 40 becomes a constant value, and the moisture permeability test obtains a value when the change rate of the weight of the water tank 10 becomes constant, In the moisture release test, the time constant T is obtained from the temporal change in the weight of the futon sample 40 after the futon sample is stored in a sample case and left for a predetermined time.
[0038]
Therefore, a moisture transfer characteristic test can be accurately performed by a very simple method using a simple apparatus without using a power source such as a test motor or a heat source, and without requiring manual labor.
[0039]
In addition, the establishment of this test method makes it possible to display quality, so that consumers can know the quality level of the futon.
[0040]
In addition, although the test method of the said Example described the performance test of the futon, it can apply widely to a textile fabric, a nonwoven fabric, etc., without being limited to this.
According to the method for testing the moisture transfer characteristics of the futon of the present invention, the weight W2 of the futon sample stored in the sample case installed above the water tank in which water is poured and the bottom thereof is stretched is measured for a predetermined time. In order to obtain a value when the weight W2 of the futon sample becomes a constant value and perform a hygroscopic test, a simple apparatus without using a power source or a heat source such as a test motor or manpower is required. It can be used to accurately perform moisture transfer property tests in a very simple manner.
[0041]
In addition, in order to convert the value when the weight W2 of the futon sample becomes a constant value per unit area of the futon sample, the converted numerical value (g / m ² ) is used as an evaluation value of the hygroscopicity of the futon. It is possible to accurately evaluate the hygroscopicity of the futon.
[0042]
In addition, a sample case in which a wire mesh is stretched on the bottom and a futon sample is stored is placed on the top, and the weight W1 of the water tank into which water has been poured is measured for a predetermined time, and the rate of change of the weight W1 of the water tank is constant. In order to conduct the moisture permeability test to determine the value when the water becomes low, it is possible to use a simple device without using a power source or heat source such as a test motor, and without human labor. A mobility characteristic test can be performed.
[0043]
Moreover, the value when the rate of change of the weight W1 of the water tank becomes a constant value is converted per unit area / unit time of the futon sample, and the converted numerical value (g / m ² h) is converted into the moisture permeability of the futon. Since the evaluation value is used, the moisture permeability of the futon can be accurately evaluated.
[0044]
In addition, the futon sample is stored in a sample case installed above the water tank into which water has been poured and a metal mesh is stretched on the bottom and left for a predetermined time. After being left for a predetermined time, the futon sample is stored in the sample case. The evaporation of moisture from the water tank while being stored in the water tank is cut off, and the weight W4 of the futon sample after being left for a predetermined time is measured for a predetermined time, and from the time change of the weight W4 of the futon sample. Moisture transfer characteristics test accurately and in an extremely simple manner using a simple device without using a power source or heat source such as a test motor or manpower, in order to conduct a moisture release test by obtaining a constant T It can be performed.
[0045]
Furthermore, since the time constant T obtained from the temporal change of the weight W4 of the futon sample is used as the futon moisture releasing evaluation value, the futon releasing ability can be accurately evaluated.
[0046]
The establishment of these test methods makes it possible to display the quality, so that consumers can easily know the quality level of the futon.
[Brief description of the drawings]
FIG. 1 is a side view for explaining the overall structure of a futon moisture movement characteristic testing apparatus according to the present invention.
FIG. 2 is a graph showing the change of weight W2 (g) of a futon sample over time, showing hygroscopic properties.
FIG. 3 is a graph showing a change in weight W1 (g) of a water tank over time, showing moisture permeability characteristics.
FIG. 4 is a graph showing a change in weight W4 (g) of a futon sample over time, and shows moisture release characteristics.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Water tank 12 Distilled water 15 W1 weight meter 20 Sample case 22 Wire net 23 Film 25 W2 Weight meter 30 Data recording device 40 Futon sample

Claims

The weight W2 of the futon sample stored in the sample case installed above the water tank and housed in the wire net on the bottom was measured for a predetermined time, and the weight W2 of the futon sample became a constant value. A method for testing moisture transfer characteristics of a futon, characterized in that a moisture absorption test is performed by determining the weight of the futon.

And wherein the futon weight W2 of the sample in terms of per unit area of the sample comforter weight when it becomes a constant value, the evaluation value of the hygroscopic futon the numerical values the terms (g / m ²⁾ The test method of the moisture movement characteristic of the futon according to claim 1.

A sample case containing a futon sample with a wire mesh stretched on the bottom was placed at the top, and the weight W1 of the water tank poured into the water was measured for a predetermined time, and the rate of change of the weight W1 of the water tank became constant. A method for testing moisture transfer characteristics of a futon, characterized in that a moisture permeability test is carried out by determining the rate of change in weight at the time.

In terms of per unit area and unit time of the sample comforter rate of change in the weight when the rate of change of the weight W1 of the water tank becomes a fixed value, a value obtained by the conversion (g / m 2 ^h) the futon breathable 4. The method for testing moisture transfer characteristics of a futon according to claim 3, wherein the evaluation value is as follows.

A futon sample is stored in a sample case installed above a water-filled water tank and covered with a wire mesh on the bottom and left for a predetermined time. After being left for a predetermined time, the futon sample is stored in the sample case. In this state, the evaporation of water from the water tank is cut off, the weight W4 of the futon sample after being left for a predetermined time is measured for a predetermined time, and the weight at the moment when the weight W4 of the futon sample is started to be measured. Moisture transfer characteristics of a futon characterized by performing a moisture-releasing test by determining the time taken for the weight W4 of the futon sample to finally reach a constant value, assuming that the rate of change is maintained Test method.

6. The method for testing moisture transfer characteristics of a futon according to claim 5, wherein the time taken for the weight W4 of the futon sample to reach the constant value is used as an evaluation value of the futon's moisture releasing property.