JP3232010B2 - Decoloring method for textile dyed materials - Google Patents
Decoloring method for textile dyed materialsInfo
- Publication number
- JP3232010B2 JP3232010B2 JP27003496A JP27003496A JP3232010B2 JP 3232010 B2 JP3232010 B2 JP 3232010B2 JP 27003496 A JP27003496 A JP 27003496A JP 27003496 A JP27003496 A JP 27003496A JP 3232010 B2 JP3232010 B2 JP 3232010B2
- Authority
- JP
- Japan
- Prior art keywords
- bleaching
- decolorizing
- bath
- dyeing
- dyed
- 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 - Fee Related
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- Coloring (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、デニムに代表され
るセルロース系繊維の織布あるいはその縫製品等の染色
物を使い古した外観を呈するように加工するための繊維
染色物の脱色方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for decolorizing a fiber dyed material for processing a dyed material such as a woven fabric of cellulosic fiber typified by denim or a sewn product thereof to give an old-fashioned appearance.
【０００２】[0002]
【従来の技術】従来、デニムの脱色には、活性塩素系漂
白剤、例えば次亜塩素酸塩、亜塩素酸塩、漂白粉、塩化
シアヌール酸系漂白剤などがある。その他に過マンガン
酸塩、過酸化水素水、過酸化ナトリウム、過硼酸ナトリ
ウム、過酸化バリウムなどの酸化漂白剤もある。また、
ハイドロサルファイトなどの還元漂白剤もある。2. Description of the Related Art Conventionally, for decolorization of denim, there are active chlorine bleaching agents such as hypochlorite, chlorite, bleaching powder, cyanuric chloride bleaching agent and the like. In addition, there are oxidizing bleaching agents such as permanganate, hydrogen peroxide solution, sodium peroxide, sodium perborate, and barium peroxide. Also,
There are also reducing bleaches such as hydrosulfite.
【０００３】一方、上記脱色剤を用いての脱色方法とし
ては、ストーンウォッシュ法、ケミカルウォッシュ法、
あるいはブリーチ法などがある。ストーンウォッシュ法
は、青色ジーンズと軽石あるいはそれに代えて研磨剤を
含有するボールとをウォッシャーなどの装置の中で撹拌
接触し、摩擦力で着色部分を脱落させて、部分脱色す
る。また、ケミカルウォッシュ法は、青色ジーンズと次
亜塩素酸ナトリウムなどの漂白剤液を含浸させた軽石と
をウォッシャーなどの装置の中で撹拌接触し、部分脱色
する。この部分脱色の機構は、漂白剤液を含んだ軽石が
青色ジーンズ生地と接触した際に、含浸漂白剤液の一部
が軽石からジーンズへ移行し、この部分の染料を分解脱
色することにある。これらストーンウォッシュ法、ケミ
カルウォッシュ法のいずれも、その脱色模様は軽石とよ
く接触した部分がよく脱色され、接触の少ない部分は脱
色が少ない、いわゆる撹拌接触脱色模様となる。On the other hand, the decolorizing method using the above decolorizing agent includes a stone wash method, a chemical wash method,
Alternatively, there is a bleaching method. In the stone wash method, a blue jeans and a pumice stone or a ball containing an abrasive are replaced by a stir contact in a device such as a washer, and a colored portion is dropped by a frictional force to partially decolorize. In the chemical wash method, blue jeans and pumice impregnated with a bleaching agent such as sodium hypochlorite are brought into contact with stirring in a device such as a washer to partially decolorize. The mechanism of this partial bleaching is that when the pumice containing the bleach solution comes into contact with the blue jeans fabric, a part of the impregnated bleach solution migrates from the pumice to the jeans and decomposes and decolorizes the dye in this portion. . In either of the stone wash method and the chemical wash method, the decolorized pattern is a part which is in good contact with the pumice, and is decolored well, and a part with little contact is less decolorized, that is, a so-called stirring contact decolorized pattern.
【０００４】[0004]
【発明が解決しようとする課題】ブリーチ法は、ジーン
ズと次亜塩素酸ナトリウムなどの漂白剤の多量液とをウ
ォッシャー等の装置の中で撹拌し脱色する方法であり、
脱色剤は処理時にいずれも多量の液状で使用されるた
め、その廃液処理及び、大気汚染が問題となっている。
また、永年にわたって市販されたため、新鮮さの欠く商
品となりつつあり、加えて次亜塩素酸ナトリウムによる
ケミカルウォッシュ法では生地の脆化も問題となる。本
発明はこれらを解決して製品自体も人に優しい感じを与
えると共に、環境に対しても優しい技術を提供しようと
するものである。The bleaching method is a method in which jeans and a large amount of a bleaching agent such as sodium hypochlorite are stirred and decolorized in a device such as a washer.
Since the bleaching agent is used in a large amount in a liquid state at the time of treatment, waste liquid treatment and air pollution are problems.
Moreover, since it has been marketed for many years, it is becoming a product lacking in freshness. In addition, the chemical wash method using sodium hypochlorite also causes a problem of embrittlement of the dough. The present invention is intended to solve these problems and to provide a product that is friendly to humans and also provides technology that is friendly to the environment.
【０００５】[0005]
【課題を解決するための手段】本発明は、セルロース系
繊維織布あるいはその縫製品等の染色物をアルカリ性浴
中で還元性を有する糖により還元脱色することを特徴と
するセルロース系繊維染色物の脱色方法である。ここに
いう還元性を有する糖とは、糖類の総称であって、アル
デヒド基又はケトン基を持ち、還元性を有する、例え
ば、三炭糖ではグリセリンアルデヒド，ジオキシアセト
ン、四炭糖ではＤ-エリトロース、五炭糖ではＤ-リボー
ス，β-Ｄ-リボフラノース，Ｄ-リプロース、六炭糖で
はＤ-マンノース，Ｄ-フラクトース(果糖)，Ｄ-グルコ
ース(ブドウ糖;本発明ではグルコースと略記)等であ
る。実用的には価格面からグルコースが好ましい。SUMMARY OF THE INVENTION The present invention relates to a method of fabricating a dyed product such as a cellulosic fiber woven fabric or its sewn product with an alkaline bath.
A method for decolorizing a cellulosic fiber dyed material, wherein the decolorization is performed by reducing and decoloring with a sugar having a reducing property. The term "reducing saccharide" as used herein is a generic term for saccharides having an aldehyde group or a ketone group and having a reducing property. For example, glyceraldehyde and dioxyacetone for tricarbon sugar and D-carbon for tetracarbon sugar. For erythrose and pentose, D-ribose, β-D-ribofuranose and D-riprose, for hexose, D-mannose, D-fructose (fructose), D-glucose (glucose; abbreviated as glucose in the present invention) and the like. It is. Practically, glucose is preferable in terms of price.
【０００６】また、セルロース系繊維織布あるいはその
縫製品の染色後、アルカリ性浴中で、糊抜き・減量加工
剤と共に糖を加えて一浴で糊抜き・減量と還元脱色を行
なうことを特徴とするセルロース系繊維染色物の脱色方
法と、セルロース系繊維の織布あるいはその縫製品の染
色後、セルロースの硫酸を用いた加水分解処理によって
生じた糖類により還元脱色を行なうことを特徴とするセ
ルロース系繊維染色物の脱色方法を同時に開発した。[0006] After dyeing a woven cellulose fiber fabric or its sewn product, sugar is added together with a desizing / reducing agent in an alkaline bath, and desizing / reducing and reduction decolorization are performed in one bath. characterized by performing the method of decolorizing cellulosic fibers dyed product, wherein, after dyeing of the fabric or the garment of cellulosic fibers, a reduction decolored with sugars produced by hydrolysis using sulfuric acid of the cellulose that A method for decolorizing a cellulosic fiber dyed product was developed at the same time.
【０００７】[0007]
実施例１〜５ 図１にフローシートを示すが、インジゴ染されたデニム
を縫製して得られたジーンズパンツ30本(24Kg)を前処理
として回転ドラム型ウォッシャー内に軽石(100Kg)と水
１ｍ3を入れて、60℃で10分間回転させた後、常法に従
って酵素アミラーゼによる糊抜き加工と酵素セルラーゼ
による減量加工を施し、次いでソーダ灰による酵素失活
を行なった。Examples 1 to 5 FIG. 1 shows a flow sheet. Pumice (100 kg) and 1 m of water are placed in a rotating drum type washer as a pretreatment using 30 jeans pants (24 kg) obtained by sewing indigo-dyed denim. After adding 3 and rotating at 60 ° C. for 10 minutes, desizing with an enzyme amylase and weight reduction with an enzyme cellulase were performed according to a conventional method, and then the enzyme was deactivated with soda ash.
【０００８】次に、ウォッシャー内へ表１に示すよう
に、グルコース(ブドウ糖)又はフラクトース(果糖)と助
剤のキャッチャー剤(除去染料の液中への分散の役目を
する)及び凝集剤を加えて30℃,３分間処理し、次にカセ
イソーダを加えて90℃,20分間処理し、以後常法に従っ
て、水洗、ソーピング、湯洗、水洗、及び仕上げ剤によ
る仕上げを行なって乾燥した。Next, as shown in Table 1, glucose (fructose) or fructose (fructose), a catcher of an auxiliary agent (which serves to disperse the removal dye in the liquid) and a coagulant are added to the washer as shown in Table 1. Then, the mixture was treated at 30 ° C. for 3 minutes, then treated with caustic soda and treated at 90 ° C. for 20 minutes, followed by washing with water, soaping, hot water, washing with water, and finishing with a finishing agent, followed by drying.
【０００９】[0009]
【表１】 [Table 1]
【００１０】表１中に脱色評価を示したが、グルコー
ス，フラクトースいずれの場合もインジゴ脱色に成功し
ている。特に従来の次亜塩素酸系漂白剤に比べて脱色が
柔らかい風合いと、色相の変化が無い自然な色落ちが可
能となっている。その他の物性も良好であって、特に引
裂き強度が比較例に比べて大となっている。[0010] Table 1 shows the evaluation of decolorization. In all cases of glucose and fructose, indigo decolorization was successful. In particular, it is possible to achieve a soft texture and a natural color fading without a change in hue as compared with a conventional hypochlorous acid bleaching agent. Other physical properties are also good, and particularly, the tear strength is higher than that of the comparative example.
【００１１】実施例６ 図２にフローシートを示したが、インジゴ染されたデニ
ム織布(30Kg)を前処理として回転ドラム型ウォッシャー
内に軽石(100Kg)と水１ｍ3を入れて、60℃で10分間回転
させた後、まず、Ａ)酵素のアミラーゼによる糊抜き加
工と酵素のセルラーゼによる減量加工を50℃で実施し
た。Example 6 A flow sheet is shown in FIG. 2. Pumice stone (100 kg) and 1 m 3 of water were put in a rotating drum type washer with indigo dyed denim woven fabric (30 kg) as a pretreatment, and the temperature was raised to 60 ° C. , And firstly, A) desizing with an enzyme amylase and weight reduction with an enzyme cellulase were carried out at 50 ° C.
【００１２】次に、Ｂ)同一ウォッシャー内へ表１に示
すように、グルコースと助剤のキャッチャー剤及び凝集
剤及びカセイソーダを加えて90℃,20分間一浴で処理
し、以後常法に従って、水洗、ソーピング、湯洗、水
洗、及び仕上げ剤による仕上げを行なって乾燥した。Next, B) As shown in Table 1, glucose, an auxiliary catcher agent, a coagulant, and caustic soda were added into the same washer, and the mixture was treated in a single bath at 90 ° C. for 20 minutes. Washing, soaping, hot water washing, water washing, finishing with a finishing agent, and drying were performed.
【００１３】表１中に脱色評価を示したが、一浴の場合
もインジゴ脱色に成功している。特に従来の次亜塩素酸
系漂白剤に比べて、この例でも色相の変化が無い自然な
色落ちが可能となっている。その他の物性も良好であっ
た。Table 1 shows the evaluation of decolorization. In the case of one bath, indigo decolorization was successful. In particular, even in this example, natural color fading without a change in hue is possible as compared with a conventional hypochlorous acid bleaching agent. Other physical properties were also good.
【００１４】実施例７ 図３にフローシートを示したが、実施例６同様にインジ
ゴ染されたデニム織布(30Kg)を前処理として回転ドラム
型ウォッシャー内に軽石(100Kg)と水１ｍ3を入れて、60
℃で10分間回転させた。これをまず、Ａ)酵素のアミラ
ーゼによる糊抜き加工を60℃で20分間行なった後、酵素
のセルラーゼによる減量加工を60℃で60分間実施した。Example 7 FIG. 3 shows a flow sheet. As in Example 6, a denim woven fabric (30 kg) dyed indigo was used as a pretreatment, and pumice (100 kg) and 1 m 3 of water were placed in a rotary drum type washer. Put, 60
Spin at 10 ° C. for 10 minutes. First, A) desizing with an enzyme amylase was performed at 60 ° C. for 20 minutes, and then weight reduction with an enzyme cellulase was performed at 60 ° C. for 60 minutes.
【００１５】次に、Ｂ)ウォッシャー内を硫酸酸性浴(７
％)とし、70℃で50分間加水分解して液中のセルロース
をグルコース主体に変化させた。これを40℃まで冷却
後、更に、Ｃ)カセイソーダを加えて90℃,30分間アルカ
リ性浴で還元脱色を行なった。以上のＡ)〜Ｃ)までを一
浴で処理し、以後常法に従って、水洗、ソーピング、湯
洗、水洗、及び柔軟仕上げ剤による仕上げを行なって乾
燥した。Next, B) a sulfuric acid acid bath (7
%), And hydrolyzed at 70 ° C. for 50 minutes to change the cellulose in the liquid mainly to glucose. After cooling to 40 ° C., C) caustic soda was further added, and reductive decolorization was performed in an alkaline bath at 90 ° C. for 30 minutes. Each of the above A) to C) was treated in one bath, and thereafter washed with water, soaped, washed with hot water, washed with water, and finished with a softening agent according to a conventional method, and dried.
【００１６】表１中に脱色評価を示したが、セルロース
の分解によって生じた糖類により還元脱色を行なうこの
例でも良好な脱色が行なわれた。従来の次亜塩素酸系漂
白剤に比べてこの場合でも、色相の変化が無い自然な色
落ちが可能となっている。その他の物性も良好であっ
た。The evaluation of decolorization is shown in Table 1. In this example, in which reductive decolorization was carried out using saccharides generated by the decomposition of cellulose, good decolorization was performed. Even in this case, natural discoloration without a change in hue is possible as compared with a conventional hypochlorous acid bleaching agent. Other physical properties were also good.
【００１７】[0017]
【発明の効果】本発明によって繊維染色物製品自体が人
に優しい感じを与えると共に、次亜塩素酸系漂白剤等を
使用しないので、水質や大気汚染のない環境に優しい脱
色技術を提供することが可能となった。また、緯糸が硫
化染料で経糸にインジゴ染と異色の硫化染料染で交織さ
れた縞模様あるいは格子模様を形成している場合などで
は、従来の次亜塩素酸系漂白剤による脱色では硫化染料
の脱色が著しかったが、本発明によると硫化染料の脱色
が少ない自然な色落ちなので、その模様を残した状態で
の脱色が可能となった。更に、次亜塩素酸系漂白剤によ
ると生地がレーヨンの場合、脱色時に脆化が著しいが、
本発明では脆化も少ない。洗濯堅牢度も改善されて良好
となった。According to the present invention, there is provided an environment-friendly decoloring technique free from water quality and air pollution, since the textile dyed product itself gives a gentle feeling to humans and does not use a hypochlorous acid-based bleaching agent. Became possible. In the case where the weft is a sulfur dye and the warp has a stripe pattern or a lattice pattern interwoven with the indigo dye and a different color of the sulfur dye, the decolorization with the conventional hypochlorous acid bleach removes the sulfur dye. Although bleaching was remarkable, according to the present invention, bleaching of the sulfur dye was natural with little bleaching, and the bleaching was possible with the pattern remaining. Furthermore, according to hypochlorous acid bleach, when the fabric is rayon, embrittlement is remarkable at the time of bleaching,
In the present invention, embrittlement is also small. The washing fastness was also improved and improved.
【図１】二浴法の本発明の繊維染色物の脱色方法を示す
フローシートである。FIG. 1 is a flow sheet showing a two-bath method for decolorizing a fiber dyed product of the present invention.
【図２】一浴法の本発明の繊維染色物の脱色方法を示す
フローシートである。FIG. 2 is a flow sheet showing a one-bath method for decolorizing a fiber dyed material of the present invention.
【図３】一浴法の他の例の本発明の繊維染色物の脱色方
法を示すフローシートである。FIG. 3 is a flow sheet showing another example of the one-bath method for decolorizing a fiber dyed material of the present invention.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) D06P 5/00 D06P 3/00 D06M 16/00 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) D06P 5/00 D06P 3/00 D06M 16/00
Claims (3)
品の染色物をアルカリ性浴中で還元性を有する糖により
還元脱色することを特徴とするセルロース系繊維染色物
の脱色方法。1. A Ri by the cellulosic fibrous web or dyeing of the sewn product to a sugar having a reducing property in an alkaline bath
Bleaching a cellulose fiber dyeing, which comprises - reducing bleaching.
品の染色後、アルカリ性浴中で、糊抜き・減量加工剤と
共に糖を加えて一浴で糊抜き・減量と還元脱色を行なう
ことを特徴とするセルロース系繊維染色物の脱色方法。2. The method according to claim 2, wherein after the cellulosic fiber woven fabric or its sewn product is dyed , sugar is added together with a desizing / weight-reducing agent in an alkaline bath, and desizing / weight -reduction and reduction decolorization are performed in one bath. Method for decolorizing dyed cellulosic fiber.
製品の染色後、セルロースの硫酸を用いた加水分解処理
によって生じた糖類により還元脱色を行なうことを特徴
とするセルロース系繊維染色物の脱色方法。3. A method for decolorizing a cellulosic fiber dyeing material, comprising the steps of: after dyeing a woven fabric of cellulosic fiber or a sewn product thereof , reduce and decolorize with a saccharide produced by a hydrolysis treatment of cellulose with sulfuric acid. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27003496A JP3232010B2 (en) | 1996-10-11 | 1996-10-11 | Decoloring method for textile dyed materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27003496A JP3232010B2 (en) | 1996-10-11 | 1996-10-11 | Decoloring method for textile dyed materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10121387A JPH10121387A (en) | 1998-05-12 |
| JP3232010B2 true JP3232010B2 (en) | 2001-11-26 |
Family
ID=17480617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27003496A Expired - Fee Related JP3232010B2 (en) | 1996-10-11 | 1996-10-11 | Decoloring method for textile dyed materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3232010B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3699355A1 (en) | 2019-02-22 | 2020-08-26 | The Hong Kong Research Institute of Textiles and Apparel Limited | Methods and systems for decolorizing textile materials |
| US11802370B2 (en) | 2021-02-24 | 2023-10-31 | The Hong Kong Research Institute Of Textiles And Apparel Limited | Method for decolorizing textiles |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19940068A1 (en) | 1999-08-24 | 2001-03-01 | Basf Ag | Process for lightening colored textile material |
| JP2008274489A (en) * | 2007-04-27 | 2008-11-13 | National Institute Of Advanced Industrial & Technology | Method for bleaching indigo-dyed fabric |
-
1996
- 1996-10-11 JP JP27003496A patent/JP3232010B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3699355A1 (en) | 2019-02-22 | 2020-08-26 | The Hong Kong Research Institute of Textiles and Apparel Limited | Methods and systems for decolorizing textile materials |
| US11085148B2 (en) | 2019-02-22 | 2021-08-10 | Nano And Advanced Materials Institute Limited | Methods and systems for decolorizing textile materials |
| US11802370B2 (en) | 2021-02-24 | 2023-10-31 | The Hong Kong Research Institute Of Textiles And Apparel Limited | Method for decolorizing textiles |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10121387A (en) | 1998-05-12 |
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