JP6701992B2 - Wrinkle resistance evaluation method - Google Patents
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本発明は、防しわ性評価方法に関する。 The present invention relates to a wrinkle resistance evaluation method.
昨今、繊維製品には、撥水性や消臭性、抗菌性、抗かび性など様々な機能性が付与されており、各種性能の評価方法が標準化され、日本工業規格（ＪＩＳ）として登録されている。本発明に関わる防しわ性についても、ＪＩＳ Ｌ１０５９（２０１５）「繊維製品の防しわ性試験方法」にモンサント法とリンクル法として標準化されている。 Recently, various functional properties such as water repellency, deodorant property, antibacterial property, and antifungal property have been added to textile products, and various performance evaluation methods have been standardized and registered as Japanese Industrial Standards (JIS). There is. The wrinkle resistance relating to the present invention is also standardized in JIS L1059 (2015) "Wrinkle resistance test method for textiles" as Monsanto method and wrinkle method.
モンサント法は折れ曲げ生地に荷重を付加し、折れ曲がった生地の回復角度を防しわ性ととして評価する測定方法である。しかし、この方法は生地が湾曲・捩れを起こした場合の測定誤差が大きく、信頼性に欠けるといった問題がある。 The Monsanto method is a measuring method in which a load is applied to a bent fabric and the recovery angle of the bent fabric is evaluated as wrinkle resistance. However, this method has a problem that the measurement error is large when the cloth is bent or twisted, and the reliability is poor.
また、リンクル法は捻りながら生地に圧縮荷重をかけ、しわそのものを標準しわ判定写真と比較し、目視判定評価する測定方法である。しかし、判定者によるしわ判定基準が曖昧であるという問題があった。 The wrinkle method is a measuring method in which a compressive load is applied to a fabric while twisting, and the wrinkles themselves are compared with a standard wrinkle determination photograph to visually evaluate and evaluate. However, there is a problem that the judgment criteria by the judge are unclear.
過去には種々の防しわ織編物が提案されているが、その評価方法はほとんどが上記モンサント法やリンクル法で評価した生地であった（特許文献１参照）。 Although various anti-wrinkle knitted fabrics have been proposed in the past, most of the evaluation methods were fabrics evaluated by the Monsanto method or the wrinkle method (see Patent Document 1).
また、従来のモンサント法ではなく、試料に荷重を５分間付加して吊るし、しわを伸ばした後に測定する防しわ測定方法が提案されている。この方法ではしわ付加直後でなく、しわをある程度伸ばした後の防しわ性を評価することが可能である。が、しわの折れ曲がった角度を評価することには変わりはなく、湾曲・捩れを起こした場合の測定誤差が大きく、信頼性に欠けるといった問題があった（特許文献２参照）。 Further, instead of the conventional Monsanto method, a wrinkle-prevention measuring method has been proposed in which a load is applied to a sample for 5 minutes to hang it, and wrinkles are straightened and then measured. With this method, it is possible to evaluate the wrinkle resistance after straightening the wrinkles to some extent, not immediately after adding the wrinkles. However, there is no change in evaluating the bent angle of the wrinkles, and there is a problem that the measurement error when bending or twisting occurs is large and the reliability is poor (see Patent Document 2).
しかしながら、モンサント法は、生地が湾曲・捩れを起こした場合の測定誤差が大きく、信頼性に欠けるといった問題がある。また、リンクル法は、目視判定評価者によるしわ判定基準が曖昧であるという問題があった。また、特許文献２の評価方法は、しわの折れ曲がった角度を評価することには変わりはなく、湾曲・捩れを起こした場合の測定誤差が大きく、信頼性に欠けるといった問題があった。 However, the Monsanto method has a problem that the measurement error is large when the cloth is bent or twisted, and the reliability is poor. Further, the wrinkle method has a problem in that the wrinkle judgment standard by the visual judgment evaluator is ambiguous. In addition, the evaluation method of Patent Document 2 is still the same as evaluating the angle at which the wrinkles are bent, and there is a problem in that the measurement error is large when bending or twisting occurs and the reliability is poor.
また、いずれの方法にしても実際の着用で発生するしわと相関が低く、実着用しわに近い評価方法の確立が望まれていた。 In addition, any of these methods has a low correlation with wrinkles generated by actual wearing, and establishment of an evaluation method close to actual wearing wrinkles has been desired.
本発明は、上記の問題点に鑑み、実着用しわ状態と相関性の高い防しわ性評価方法を提供せんとするものである。 In view of the above problems, the present invention is to provide a wrinkle resistance evaluation method having a high correlation with the actually worn wrinkle state.
本発明は、上記課題を解決するために、次の手段を採用するものである。
（１）織編物に曲げ圧縮を２回付与し、１回目の曲げ圧縮エネルギー（ＷＣ１）、２回目の曲げ圧縮エネルギー（ＷＣ２）を測定し、下記式で定義される、曲げ圧縮エネルギーロス率（％）を織編物の防しわ指標とすることを特徴とする防しわ性評価方法である。
曲げ圧縮エネルギーロス率（％）＝（１回目の曲げ圧縮エネルギー（ＷＣ１）−２回目の曲げ圧縮エネルギー（ＷＣ２））／１回目の曲げ圧縮エネルギー（ＷＣ１）
The present invention adopts the following means in order to solve the above problems.
(1) Bending compression is applied twice to the woven or knitted fabric, the first bending compression energy (WC1) and the second bending compression energy (WC2) are measured, and the bending compression energy loss rate ( %) as a wrinkle resistance index of the woven or knitted material.
Bending compression energy loss rate (%) = (first bending compression energy (WC1)-second bending compression energy (WC2))/first bending compression energy (WC1)
本発明によれば、実着用しわ状態と相関性の高い防しわ性評価方法を提供することができる。 According to the present invention, it is possible to provide a wrinkle resistance evaluation method having a high correlation with the actually worn wrinkle state.
本発明は、前記課題について鋭意検討した結果、織編物に曲げ圧縮を２回付与し、１回目の曲げ圧縮エネルギー（ＷＣ１）、２回目の曲げ圧縮エネルギー（ＷＣ２）を測定し、下記式で定義される、曲げ圧縮エネルギーロス率（％）を織編物の防しわ性の指標とすることで実着用しわ状態と相関性の高い防しわ性評価方法を提供するものである。
曲げ圧縮エネルギーロス率（％）＝（１回目の曲げ圧縮エネルギー（ＷＣ１）−２回目の曲げ圧縮エネルギー（ＷＣ２））／１回目の曲げ圧縮エネルギー（ＷＣ１）
生地に１回目の曲げ圧縮を付与して１回目の曲げ圧縮エネルギー（ＷＣ１）を測定し、しわつけした後、一定時間放置し、さらに２回目の曲げ圧縮を付与して２回目の曲げ圧縮エネルギー（ＷＣ２）を測定することで、１回目と２回目の曲げ圧縮エネルギー量差、すなわち未回復のエネルギー量を計算することが可能になる。この未回復のエネルギー量が生地に残留しているしわ量と相関性が高いことを見出し、未回復のエネルギー量を１回目の曲げ圧縮エネルギーで除した値を曲げ圧縮エネルギーロス率（％）として、新規防しわ指標として、定義を行った。この曲げ圧縮エネルギーロス率（％）は「しわの付きやすさ」の程度を示しており、曲げ圧縮エネルギーロス率（％）が低いほど、防しわ性が高い素材となる。繊維製品の実着用評価とも高い相関性が得られることを見いだした。
In the present invention, as a result of earnestly studying the above-mentioned problems, bending compression is applied twice to the woven and knitted fabric, the first bending compression energy (WC1) and the second bending compression energy (WC2) are measured, and defined by the following formula. By using the bending compression energy loss rate (%) as an index of the wrinkle resistance of the woven or knitted fabric, a wrinkle resistance evaluation method having a high correlation with the wrinkle state of actual wear is provided.
Bending compression energy loss rate (%)=(first bending compression energy (WC1)−second bending compression energy (WC2))/first bending compression energy (WC1)
The first bending compression energy is applied to the fabric, the first bending compression energy (WC1) is measured, and after the material is wrinkled, it is left for a certain period of time, and then the second bending compression energy is applied, and the second bending compression energy is applied. By measuring (WC2), it is possible to calculate the difference between the first and second bending compression energy amounts, that is, the unrecovered energy amount. It was found that this unrecovered energy amount has a high correlation with the amount of wrinkles remaining in the fabric, and the value obtained by dividing the unrecovered energy amount by the first bending compression energy is defined as the bending compression energy loss rate (%). , Was defined as a new anti-wrinkle index. The bending compression energy loss rate (%) indicates the degree of "easiness of wrinkling". The lower the bending compression energy loss rate (%), the higher the wrinkle resistance of the material. It was found that a high correlation was also obtained with the actual wear evaluation of textile products.
この１回目と２回目の曲げ圧縮エネルギー量を測定する間には任意の工程及び時間を付与することができる。生地に荷重を吊るし、しわを伸ばした後に測定することで、しわの取れ易さを加味した指標にすることも可能である。また、１回目と２回目の測定の間にさらにしわつけ工程を付与することも可能である。 An arbitrary step and time can be applied between the first and second bending compression energy amounts. By suspending the load on the cloth and straightening the wrinkles and then measuring it, it is also possible to use it as an index in consideration of the ease of removing the wrinkles. It is also possible to add a wrinkling step between the first and second measurements.
また、１回目と２回目の間の放置時間は３０秒以上７２時間未満が好ましい。３０秒未満であると、しわ回復の時間が考慮できず、着用しわとの相関性が低くなる。７２時間を越えると測定に時間がかかりすぎ好ましくない。 The standing time between the first and second times is preferably 30 seconds or more and less than 72 hours. If it is less than 30 seconds, the time for wrinkle recovery cannot be taken into consideration, and the correlation with worn wrinkles becomes low. If it exceeds 72 hours, the measurement takes too much time, which is not preferable.
しわを付加する曲げ圧縮荷重としては、２０〜３００ｇｆ／ｃｍ２であることが、実際の着用に近い曲げ圧縮荷重であり、しわを確実に付与できる点で好ましい。２０ｇｆ／ｃｍ２未満であると、しわが付与され難い場合がある。３００ｇｆ／ｃｍ２を超えると、一般の着用状態より高い付加荷重であり、着用評価との相関性が低くなる場合がある。 The bending compression load for applying wrinkles is preferably 20 to 300 gf/cm 2, which is a bending compression load close to actual wearing and is preferable in that wrinkles can be reliably applied. If it is less than 20 gf/cm 2 , it may be difficult to give wrinkles. If it exceeds 300 gf/cm 2 , the applied load is higher than that in the general wearing state, and the correlation with the wearing evaluation may be low.
パンツ縫製品の臀部しわを考慮した場合、より好ましい曲げ圧縮荷重としては、２００〜２５０ｇｆ／ｃｍ２である。パンツ縫製品を折り畳んでカバン等に１日放置した際の折れ畳みしわを想定した場合、より好ましい曲げ圧縮荷重としては、５０〜１００ｇｆ／ｃｍ２である。 In consideration of the wrinkles in the buttocks of the sewn pants product, a more preferable bending compression load is 200 to 250 gf/cm 2 . Assuming a folding wrinkle when the pants sewn product is folded and left in a bag for one day, a more preferable bending compression load is 50 to 100 gf/cm 2 .
生地の曲げ圧縮エネルギーは、測定生地にしわをつけない状態で２つ折りにして生地を固定し、その上部から曲げ圧縮荷重を付与する方法で測定する。そのためには折れ曲げループ形成長が１０〜１００ｍｍであることが、防しわ性評価の精度が高くなり、好ましい。１０ｍｍｍ未満であると、生地を準備している段階ですでにしわが付与されてしまい好ましくない。また１００ｍｍを超えると、折れ曲げループが大きくなり、圧縮荷重付加する場所にバラツキが生じやすくなり、正確な測定ができ難くなり、好ましくない。 The bending compression energy of the dough is measured by a method in which the measurement dough is folded in two without wrinkling, the dough is fixed, and a bending compression load is applied from the upper part. For that purpose, it is preferable that the bent loop formation length is 10 to 100 mm because the accuracy of wrinkle resistance evaluation becomes high. If it is less than 10 mm, wrinkles are already added at the stage of preparing the dough, which is not preferable. On the other hand, if it exceeds 100 mm, the bending loop becomes large and the location where the compressive load is applied tends to vary, which makes it difficult to perform accurate measurement, which is not preferable.
曲げ圧縮エネルギーを測定する測定機器としてはいずれの機器で測定しても問題ないが、カトーテック（株）製のＫＥＳ圧縮試験機が精度高く測定できる点で好ましい。 As a measuring device for measuring the bending compression energy, there is no problem even if it is measured by any device, but a KES compression tester manufactured by Kato Tech Co., Ltd. is preferable because it can measure with high accuracy.
本発明の防しわ性評価方法に使用する評価用繊維生地は、パンツ、スカート、ジャケット等の衣料品に用いる織編物などの生地のことである。その組成は、天然繊維、合成繊維、再生繊維などの各種繊維素材およびそれらの混合物など、特に限定するものではない。 The evaluation fiber material used in the wrinkle resistance evaluation method of the present invention is a material such as a woven or knitted material used for clothing such as pants, skirts and jackets. The composition is not particularly limited, and various fiber materials such as natural fiber, synthetic fiber, regenerated fiber, and mixtures thereof may be used.
以下、実施例により、本発明の防しわ性評価について詳細に説明するが、本発明はこれらの実施例により限定されるものではない。 Hereinafter, the wrinkle resistance evaluation of the present invention will be described in detail with reference to Examples, but the present invention is not limited to these Examples.
１．評価生地
パンツ縫製品に用いられる生地４種類を防しわ性評価生地とした。
生地（１）経糸及び緯糸にウール１／５０及び５６デシテックス１２フィラメントのＰＥＴ（ポリエチレンテレフタレート）／ＰＥＴバイメタル糸の精紡合撚糸を用い、経糸本数９５本／ｉｎｃｈ、緯糸本数７０本／ｉｎｃｈの平織物。
生地（２）経糸及び緯糸に１１０デシテックス２４フィラメントのＰＥＴ／ＰＥＴバイメタル糸（撚糸数１３００Ｔ／ｍ）を用い、経糸本数１３０本／ｉｎｃｈ、緯糸本数９０本／ｉｎｃｈの２／１ツイル織物。
生地（３）経糸及び緯糸に１６７デシテックス１４４フィラメントのＰＥＴ仮撚加工糸を用い、経糸本数１２５本／ｉｎｃｈ、緯糸本数８０本／ｉｎｃｈの平織物。
生地（４）経糸に綿４０ｓ、緯糸に４０ｓ＋７０デシテックスＰＵ（ポリウレタン）を用い、経糸本数１３０本／ｉｎｃｈ、緯糸本数８０本／ｉｎｃｈの２／１ツイル織物。
1. Evaluation Fabrics Four types of fabrics used for pants sewing products were used as wrinkle resistance evaluation fabrics.
Fabric (1) Wool 1/50 and 56 decitex 12 filament PET (polyethylene terephthalate)/PET bimetal yarn finely spun twisted yarns are used for the warp and weft, and the flatness is 95 warp/inch, 70 weft/inch fabric.
Fabric (2) 2/1 twill fabric with 130 detents/inch and 90 wefts/inch, using PET/PET bimetal yarn of 110 decitex 24 filaments (twisting number 1300 T/m) for warp and weft.
Dough (3) Plain warp and weft, using PET false twisted yarn of 167 decitex 144 filaments, plain weave with 125 warp yarns/inch and 80 weft yarns/inch.
Fabric (4) 2/1 twill woven fabric with 40s of cotton for warp and 40s+70 decitex PU (polyurethane) for weft, 130 warps/inch, 80 wefts/inch.
２．実着用評価（一対比較法）
上記４種類の生地で各５着作成したパンツ縫製品を５人の被験者に７時間着用（座り作業４時間、立ち作業３時間）させ、着用直後の膝裏及び臀部の写真を撮影する。同様の作業を４日間行い、４種類の生地の着用後のしわ写真を取得する。
2. Actual wear evaluation (paired comparison method)
Five pants sewn products, each made of five pieces of the above-mentioned four kinds of cloth, are worn by five test subjects for 7 hours (sitting work for 4 hours, standing work for 3 hours), and photographs of the back of the knees and buttocks are taken immediately after the wearing. The same operation is performed for 4 days, and wrinkle photographs of four kinds of fabrics after wearing are obtained.
これらの着用しわの写真を用いて、サーストンの一対比較を５０人の被験者で行い、しわの目視判定尺度を得る。目視判定尺度は値が大きい方が防しわ性が良いという評価である。 Using these photographs of worn wrinkles, a pairwise comparison of Thurston is performed on 50 subjects to obtain a visual judgment scale for wrinkles. The visual judgment scale is an evaluation that the larger the value, the better the wrinkle resistance.
実施例１
生地準備として、まず、２０℃６５％ＲＨ条件で２４時間生地を放置し、調湿を行う。
経方向のしわを測定する場合には経８０ｍｍ×緯４０ｍｍにサンプルをカットする。緯方向のしわを測定する場合には経４０ｍｍ×緯８０ｍｍにサンプルをカットする。
Example 1
As the dough preparation, first, the dough is allowed to stand for 24 hours under the condition of 20° C. and 65% RH to control the humidity.
When measuring wrinkles in the warp direction, the sample is cut into a length of 80 mm and a weft of 40 mm. When measuring wrinkles in the weft direction, the sample is cut into a length of 40 mm and a width of 80 mm.
以下、図１を用いて、経方向のしわを測定する場合で説明する。 Hereinafter, a case of measuring wrinkles in the longitudinal direction will be described with reference to FIG.
測定生地カット後、生地１の経方向を上下方向として置き、生地１の裏側中心部２から上方に１．５ｃｍを下端として両面テープ３を貼る。その後、直径８ｍｍのステンレス棒を中心軸にして、経方向に二つ折りにして、先程の両面テープ３を貼った位置で２つ折りにした生地１を貼りあわせ固定する。後、ステンレス棒を抜き、折れ曲げループ４を形成した測定生地とする。このような測定生地を経方向に５枚、緯方向に５枚準備する。 After the measurement dough is cut, the dough 1 is placed with the warp direction as the up-down direction, and the double-sided tape 3 is applied upward from the back side central portion 2 of the dough 1 with 1.5 cm as the lower end. After that, a stainless rod having a diameter of 8 mm is used as a central axis and is folded in two in the longitudinal direction, and at the position where the double-sided tape 3 is pasted, the dough 1 that is folded in two is pasted and fixed. After that, the stainless steel rod is pulled out, and the measurement fabric having the bent loop 4 is formed. Five such measurement fabrics are prepared in the warp direction and five in the weft direction.
測定生地サンプル貼り合せ後、カトーテック（株）製のＫＥＳ圧縮試験機へ生地を１枚づつセットする。圧縮子６は４ｃｍ２を用い、圧縮子６の中心線で生地の折れ曲げループ４を圧縮できるように測定生地をセットし、セロハンテープ５で固定する。 After laminating the measurement dough samples, the doughs are set one by one in a KES compression tester manufactured by Kato Tech Co., Ltd. The compressing element 6 is 4 cm 2 , and the measurement material is set so that the bending loop 4 of the material can be compressed at the center line of the compressing element 6, and fixed with cellophane tape 5.
そして、圧縮速度０．１ｍｍ／秒、圧縮荷重２５０ｇｆ／ｃｍ２で生地を曲げ圧縮し、その曲げ圧縮荷重／変位曲線から得られた曲げ圧縮エネルギー（ＷＣ１）を測定する。除荷重後、さらに１分間生地を放置させた後、２回目の曲げ圧縮エネルギー（ＷＣ２）を１回目と同条件で測定する。 Then, the material is bent and compressed at a compression speed of 0.1 mm/sec and a compression load of 250 gf/cm 2 , and the bending compression energy (WC1) obtained from the bending compression load/displacement curve is measured. After unloading, the dough is allowed to stand for another minute, and then the second bending compression energy (WC2) is measured under the same conditions as the first time.
その後、下記計算式で曲げ圧縮エネルギーロス率（％）を計算する。
曲げ圧縮エネルギーロス率（％）＝（１回目の曲げ圧縮エネルギー（ＷＣ１）−２回目の曲げ圧縮エネルギー（ＷＣ２））／１回目の曲げ圧縮エネルギー（ＷＣ１）
図２に曲げ圧縮荷重／変位曲線曲げ圧縮エネルギー曲線を示す。横軸を曲げ圧縮変位（ＢＣＤ）（ｍｍ）、縦軸を曲げ圧縮荷重（ＢＣＬ）（ｇｆ／ｃｍ２）とする。実線に囲まれた部分（符号７）が、１回目の曲げ圧縮エネルギー（ＷＣ１）であり、破線に囲まれた部分（符号８）が、２回目の曲げ圧縮エネルギー（ＷＣ２）である。
Then, the bending compression energy loss rate (%) is calculated by the following calculation formula.
Bending compression energy loss rate (%) = (first bending compression energy (WC1)-second bending compression energy (WC2))/first bending compression energy (WC1)
FIG. 2 shows a bending compression load/displacement curve bending compression energy curve. The horizontal axis represents bending compression displacement (BCD) (mm), and the vertical axis represents bending compression load (BCL) (gf/cm 2 ). The portion surrounded by the solid line (reference numeral 7) is the first bending compression energy (WC1), and the portion enclosed by the broken line (reference numeral 8) is the second bending compression energy (WC2).
この作業を経方向に５枚、緯方向に５枚繰り返し、それぞれの平均値を各方向の曲げ圧縮エネルギーロス率（％）とするが、パンツ縫製品との着用評価との相関性を比較するにあたっては、経方向の曲げ圧縮エネルギーロス率（％）を各生地の曲げ圧縮エネルギーロス率（％）とした。 This work is repeated 5 times in the warp direction and 5 pieces in the weft direction, and the average value of each is taken as the bending compression energy loss rate (%) in each direction, but the correlation with the wearing evaluation with the pants sewn product is compared. At that time, the bending compression energy loss rate (%) in the warp direction was defined as the bending compression energy loss rate (%) of each fabric.
その結果を表１に示す。各生地の曲げ圧縮エネルギーロス率（％）と実着用防しわ性評価結果目視判定尺度の順位付けは一致しており、高い相関性が得られていることを確認した。 The results are shown in Table 1. It was confirmed that the bending compression energy loss rate (%) of each fabric and the ranking of the actual wear wrinkle resistance evaluation result visual evaluation scale were in agreement, and a high correlation was obtained.
実施例２
圧縮荷重を１００ｇｆ／ｃｍ２に変更した以外は実施例１と同様の方法で曲げ圧縮エネルギーロス率（％）を測定した。その結果を表１に示す。各生地の曲げ圧縮エネルギーロス率（％）と実着用防しわ性評価結果目視判定尺度の順位付けは一致しており、高い相関性が得られていることを確認した。
Example 2
The bending compression energy loss rate (%) was measured by the same method as in Example 1 except that the compression load was changed to 100 gf/cm 2 . The results are shown in Table 1. It was confirmed that the bending compression energy loss rate (%) of each fabric and the ranking of the actual wear wrinkle resistance evaluation result visual judgment scale were in agreement, and a high correlation was obtained.
比較例１
ＪＩＳＬ１０５９−１法（モンサント法）で測定を行い、実着用防しわ性評価結果目視判定尺度と比べた結果、生地（１）と生地（２）で防しわ優位性が入れ替わる結果となり、実着用評価とは異なる結果となった。
Comparative Example 1
Measured by JISL1059-1 method (Monsanto method) and compared with actual wear wrinkle resistance evaluation result visual judgment scale. As a result, the wrinkle superiority of the fabric (1) and the fabric (2) are interchanged, and the actual wear evaluation Results different from.
比較例２
ＪＩＳＬ１０５９−２法（リンクル法）で測定を行い、実着用防しわ性評価結果目視判定尺度と比べた結果、リンクル方では生地（１）と生地（２）で同級評価、生地（３）と生地（４）で同級評価となり、実着用評価とは異なる結果となった。
Comparative example 2
Measured by JISL1059-2 method (wrinkle method) and compared with the actual wear wrinkle resistance evaluation result visual judgment scale. As a result, in the wrinkle method, the cloth (1) and the cloth (2) were evaluated in the same grade, the cloth (3) and the cloth. In (4), it was evaluated in the same class, which was different from the actual wearing evaluation.
本発明によれば、様々な繊維製品における実着用しわ状態と相関性の高い防しわ性評価方法を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the wrinkle prevention evaluation method with high correlation with the actual wearing wrinkle state in various textiles can be provided.
ａ：測定生地カット後
ｂ：測定生地サンプル貼り合せ後
ｃ：測定生地サンプル貼り合せ後側面
１：生地
２：裏側中心部
３：両面テープ
４：折れ曲げループ
５：セロハンテープ
６：圧縮子
７：１回目の曲げ圧縮エネルギー（ＷＣ１）
８：２回目の曲げ圧縮エネルギー（ＷＣ２）
a: After cutting the measurement fabric b: After bonding the measurement fabric sample c: After bonding the measurement fabric sample Side 1: Fabric 2: Back side center part 3: Double-sided tape 4: Bending loop 5: Cellophane tape 6: Compressor 7: First bending compression energy (WC1)
8: Second bending compression energy (WC2)
Claims (1)
曲げ圧縮エネルギーロス率（％）＝（１回目の曲げ圧縮エネルギー（ＷＣ１）−２回目の曲げ圧縮エネルギー（ＷＣ２））／１回目の曲げ圧縮エネルギー（ＷＣ１）
Bending compression is applied twice to the woven or knitted fabric, the first bending compression energy (WC1) and the second bending compression energy (WC2) are measured, and the bending compression energy loss rate (%) defined by the following formula is calculated. A method for evaluating wrinkle resistance, which is used as an index of wrinkle resistance of a woven or knitted material.
Bending compression energy loss rate (%) = (first bending compression energy (WC1)-second bending compression energy (WC2))/first bending compression energy (WC1)
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