CN1282816A - Byeing method spinning material using 3-indoxyl indigo blue and equipment utilizing said method - Google Patents
Byeing method spinning material using 3-indoxyl indigo blue and equipment utilizing said method Download PDFInfo
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- CN1282816A CN1282816A CN00102601A CN00102601A CN1282816A CN 1282816 A CN1282816 A CN 1282816A CN 00102601 A CN00102601 A CN 00102601A CN 00102601 A CN00102601 A CN 00102601A CN 1282816 A CN1282816 A CN 1282816A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/04—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments
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Abstract
A method for dyeing textile material using indigo with the help of 3-indole-oxyl includes such steps as passing yarn through pre-washing unit, passing the yarn through 9 serially communicated tanks containing 3-indde-oxyl solution for dyeing, passing the yarn through the washing and pre-drying unit composed of a series of tanks, passing the yarn through sizing unit for sizing it with indigo dye, passing the yarn through dryer containing rollers, and winding yarn to obtain warp yarn.
Description
The invention relates to a method for dyeing textile materials by means of indigo with 3-indoxyl, and to a device for carrying out the method.
By means of the present method, indigo dyed textile yarns are produced, from which so-called denim fabrics can subsequently be made for the production of articles, such as blue jeans.
Indigo is one of the oldest known dyeings and has been used for hundreds of years to dye textiles such as cotton.
EP-B-0692042 describes a process for dyeing cellulose-containing textiles with indigo, in which process leuco (colourless) indigo prepared by catalytic hydrogenation is used, which, after its absorption into the textile, is converted into its pigmentary form by air oxidation.
US-A-4283198 describes A continuous process for dyeing cellulosic fibres with indigo, in which the fibres are passed through A series of impregnation tanks containing A dye liquor comprising: leuco indigo, sodium dithionite and sodium hydroxide.
US-A-3457022 describes A process for dyeing cotton fibres with indigo, in which process the indigo is applied to the yarn at A temperature of 65-85 ℃ and then at A temperature below 40 ℃.
Blue jeans dyed with indigo have the disadvantage of fading on washing. In recent years, there has been even a fashion of wearing faded blue jeans. To follow this fashion, the industry has developed corresponding methods and systems in which the fading of textiles is increased and promoted by promoting the fading of warp yarns. The method of use of such dyes will aid the fading and aging process. But all fashion is transient and lasts only for a certain time.
EP 9830005.1 describes a dyeing process using indigo in which a wear-and fade-resistant denim fabric is produced. By this process, the indigo will penetrate deeper into the yarn. In the processes prior to this patent application, the yarn contained a white central core, which was much finer in the process of EP 9830005.1, and indigo was dyed only on the outside.
The aim of the invention is to produce a technical cloth fabric that is resistant to abrasion and fading and to dye the resulting yarn to such an extent that there is virtually no white central core and even the white central core has disappeared.
By the method and apparatus of the present invention, complete penetration of the yarn by indigo is achieved by complete or substantial elimination of the internal white core and thus fabric aging due to fading from washing.
Until now, one of the reasons why indigo does not penetrate the yarn thoroughly is its large molecules:
however, it is known thatThe synthesis of indigo is obtained by oxidation of two 3-indoxyl groups according to the following reaction scheme:
it is conceivable that 3-indoxyl reacts according to its keto tautomerism.
By the process of the invention, the yarn to be dyed is impregnated with 3-indoxyl group, and then the 3-indoxyl group is oxidized in situ to give indigo.
Without wishing to be bound by any particular theory, it is hypothesized that the 3-indoxyl molecule (smaller than the indigo molecule) penetrates deeper into the yarn and, due to the in situ oxidation of the 3-indoxyl to indigo, the indigo will be anchored to the yarn throughout the thickness of the yarn and therefore will not have a white core.
The dyeing process for textiles according to the invention is described in claim 1.
An apparatus utilizing this dyeing method is described in claim 8.
The conventional practice of dyeing yarn with indigo is improved by the process of the present invention by including other operations. The improvement is not only in the tank stage, but also in the oxidation and pre-mercerization stages, thereby assisting the absorption and impregnation capabilities of the yarn.
In the oxidation process of the present invention, the first stage comprises: very rapid exposure in the initial dye bath at the beginning of the oxidation process, then gradually increasing the exposure time after each bath to aid penetration of the 3-indoxyl group into the yarn and achieve in situ oxidation.
The yarn is then steamed under specific conditions of temperature and pressure before washing and alkaline leaching again.
The second stage of the method comprises: insulation is formed around the dyed yarn to make it wash durable and then ready for use. To achieve this effect, the yarn must first be neutralized by sequential operation of the acid baths.
The yarn is then allowed to dry thoroughly and the indigo will be permanently fixed and will possess the desired properties. As mentioned above, the yarn obtained by the processes known in the art consists of a central core, white, i.e. not dyed, and an outer portion impregnated with indigo dye. With the process of the invention, the central core is dyed thoroughly with indigo.
For a better understanding of the present invention, reference is made to the following drawings:
FIG. 1 shows a sketch of a pre-washing apparatus used in the method of the invention;
FIG. 2 shows a sketch of a 3-indoxyl dyeing apparatus used in the method of the present invention;
FIG. 3 shows a sketch of a washing and pre-drying apparatus used in the method of the invention;
FIG. 4 shows a sketch of a sizing apparatus used in the method of the invention;
figure 5 shows a sketch of a drying apparatus and warp forming apparatus according to the invention.
The method of the present invention will be described with sequential reference to fig. 1-5. According to the method of the invention, first of all, a pre-washing phase is carried out by feeding the yarn F forward from a delivery roller, where it will pass through a pre-washing device (1) comprising two or several tanks (2) containing a pre-washing liquid (10, 15). The yarn is introduced by means of rollers (3 and 4) into a first tank (2) containing a pre-washing liquid, then, when leaving the washing liquid, it passes between two squeezing rollers to remove the excess liquid, and then, guided by means of a roller (6), it is again immersed in the pre-washing liquid. On leaving the bath, the yarn passes between two squeeze rolls (7). The yarn is then immersed in a pre-washing liquid (15) contained in the second tank (2), guided by guide rollers (8) and (9). The yarn is fed through the second channel by sequential operations between two squeeze rollers (12), between a guide roller (11) and then between squeeze rollers (13), in the same process as through the first channel.
The pre-wash liquid contains an absorbent product such as FINBIL (manufactured by Bozzetto Co., Ltd.) (trade name) which is a derivative of fatty alcohol phosphoric acid ester. The concentration of the compound in the aqueous solution is 5-8 g/L. This pre-wash bath was used to impregnate the yarn in order to aid subsequent penetration of the 3-indoxyl group.
After this pre-washing stage, the yarn reaches the actual dyeing stage, which is carried out in the dyeing apparatus shown in fig. 2.
The dyeing apparatus (30) consists of 8 tanks (35) in series containing a 3-indoxyl solution. The yarn F advancing from the pre-washing apparatus is guided by the guide rolls (31) into the dye bath contained in the first vat (35), runs around the rolls (32) and leaves the dye bath, running between the first squeeze rolls (34) of the first vat (35), runs around the rolls (33) and returns to the dye bath in the first vat, runs around the second rolls (32) of the first vat so as to leave the dye bath, passing between the second set of squeeze rolls (34) of the first vat. The yarn then passes along a roller (36). During the path between the second set of squeeze rolls (34) and rolls (36), the impregnated yarn is oxidized and forms indigo that dyes the yarn. After running through the rolls (36), the yarn enters the dye bath contained in the second vat, in which the same procedure as in the first vat is followed by the rolls (31), (32) and (34) of the second vat. Upon exiting the second slot, the yarn no longer travels around one roller (36) as it did upon exiting the first slot, but around two rollers (36) and one roller (37), so that the stroke exposed to air upon exiting the second slot will be twice that upon exiting the first slot, and thus the oxidation will be more than twice. After running through the rollers (36) and (37), the yarn enters the third slot, etc., until it reaches the eighth slot, and on leaving each slot, the yarn runs around the roller (36). It should be noted that, as shown in fig. 2, there are three rollers (36) between the third and fourth grooves, four rollers (36) between the fourth and fifth grooves, and so on until leaving the eighth groove, there are 8 rollers (36) when leaving the eighth groove. Therefore, the exposure time will gradually increase in the course from the first trench to the eighth trench, and therefore, if the oxidation process between the first trench and the second trench is set to a value x, the result will be, in sequence:
oxidation number between first and second cell = x
Oxidation number between second and third cell =2 ×
Oxidation number between third and fourth cell =3 ×)
Oxidation number between the fourth and fifth cells =4 ×
Oxidation number between fifth and sixth grooves =5 ×
Oxidation number between sixth and seventh grooves =6 ×
Oxidation number between the seventh and eighth grooves =7 ×
After the eighth slot =8x
The dye bath comprises an aqueous solution of 3-indoxyl group, which comprises 6 to 8% by weight of pure 3-indoxyl group.
The speed of the yarn through the dye bath is 20-60 m/min, depending on the type and quality of the yarn.
Since 3-indoxyl readily reacts with oxygen in air, the stability of the 3-indoxyl bath in the tank (35) must be fixed before the 3-indoxyl solution is applied to the yarn. This was done by adding sodium dithionite (Na) to the bath2S2O4) And sodium hydroxide (NaOH). The reduction bath reacts with oxygen at the interface of the bath and atmosphere according to the following equation
The example shown in fig. 2 contains 8 slots, but it is obvious that this operation can be repeated two, three or more times by using two, three or more groups of 8 slots, thus achieving more 3-indoxyl penetration within the yarn.
By means of this dyeing process, the yarn is given a strong, deep indigo coloration.
After the yarn dyeing, washing and pre-drying are carried out by means of the apparatus (40) shown in fig. 3. The yarn is passed sequentially through the grooves (41) to (45) guided by the rollers (46), (47) and (48). Tank (41) contains water and 50% acetic acid (CH)3COOH) is introduced into the grooves (42), (43) and (44) in such a way that the groove (42) contains a proportion of 20 cc/l and the groove (43) contains 10 cc-l, and the tank (44) contains a ratio of 5 cc/l. The tank (45) again contains water, the final pH being between 6 and 7, preferably 6.7.
Upon leaving the slot (45), the yarn is pre-dried by running around a roller (50), as can be seen from figure 3.
After washing and pre-drying the yarn, the yarn is sized with indigo dye to increase the wash and rub fastness of fabrics subsequently made by passing the yarn through a sizing apparatus (60), as shown in fig. 4. The yarn passes through a trough (62) containing a blend of resins (63) and is guided through the trough by guide rolls (64) and squeeze rolls (61).
The composition of the resin blend was as follows:
10-50 g/l Polyalkylamine Quaternary ammonium salt
10-50 g/l fluorocarbon resin
10-200 g/l acrylic resin
1-20 g/l autocatalytic polysiloxane
10-200 g/l polyurethane resin
In the sizing operation described, a transparent film is formed on the yarn fibers, which fixes the indigo to the yarn, thereby increasing the wash fastness of the yarn.
After the sizing stage, the yarn is dried by running it around a roller (71) by means of a device (70) shown in figure (5). The drying is carried out at a temperature of between 150 ℃ and 180 ℃.
The warp yarn is then wound onto a roller (72).
The process according to the invention can be carried out with various yarns, such as cotton, cotton and nylon, cotton and polyester, etc.
The method and apparatus utilizing the process of the present invention are preferred embodiments. It should be noted that various modifications can also be made, and it is also to be understood that such modifications are within the scope of the following claims.
Claims (17)
1. A process for dyeing textiles with indigo, characterized in that it comprises the following stages:
a. -pre-washing the yarn F by passing it through a pre-washing apparatus (1), said apparatus (1) comprising two or several tanks (2) containing a pre-washing liquid (10, 15);
b. subsequent dyeing of the yarn by passing it through a dyeing apparatus (30) consisting of 8 series-connected tanks (35) containing a 3-indoxyl solution, each tank containing a 3-indoxyl solution, and in the passage from one tank (35) to the other, the oxidation of the yarn by exposure to air will take place, converting the 3-indoxyl group into indigo, which is then dyed by impregnation, the oxidation by exposure to air being carried out to such an extent that, in the passage in sequence from the first tank (35) to the eighth tank, if the oxidation between the first and second tanks is set to the value x, the following values will be obtained in succession:
oxidation number between first and second cell = x
Oxidation number between second and third cell =2 ×
Oxidation number between third and fourth cell =3 ×)
Oxidation number between the fourth and fifth cells =4 ×
Oxidation number between fifth and sixth grooves =5 ×
Oxidation number between sixth and seventh grooves =6 ×
Oxidation number between the seventh and eighth grooves =7 ×
After the eighth slot =8 x;
c. washing and pre-drying the yarn by passing it through a washing and pre-drying apparatus (40) comprising a series of tanks (41,42,43,44 and 45), the first tank (41) containing water, the tanks (42, 43 and 44) containing acetic acid and the tank (45) containing water, so that the pH in the last tank is between 6 and 7 and, on exiting the tank (45), the yarn is pre-dried by passing it between rollers (50);
d. sizing the yarn with indigo dye by passing the yarn through a sizing apparatus (60) comprising a tank (62) containing a resin blend to form a transparent film on the yarn fibers;
e. drying the yarn by passing it through a drying apparatus (70) comprising a roller (71);
f. the warp yarns are collected by winding them onto a drum (72).
2. Method according to claim 1, characterized in that during stage a) a pre-wash liquor is used comprising a fatty alcohol phosphate derivative, such as finbailas.
3. A method according to claim 1, characterized in that the dye liquor in the vat (35) consists of an aqueous solution of 6-8% by weight of pure 3-indoxyl group.
4. The process according to claim 1, characterized in that in stage c) the acetic acid solution in tank (42) is obtained by adding 20 cc/l 50% acetic acid to tank (42), the acetic acid solution in tank (43) is obtained by adding 10 cc/l 50% acetic acid to tank (43), and the acetic acid solution in tank (44) is obtained by adding 5 cc/l 50% acetic acid to tank (44).
5. The process according to claim 1, characterized in that the resin blend during stage d) comprises a mixture of:
10-50 g/l Polyalkylamine Quaternary ammonium salt
10-50 g/l fluorocarbon resin
10-200 g/l acrylic resin
1-20 g/l autocatalytic polysiloxane
10-200 g/l polyurethane resin.
6. A method according to claim 1, characterized in that stage b) can be repeated several times by using 16, 24 dye tanks (35) instead of 8 dye tanks.
7. A method according to claim 1, characterized in that the yarn is passed through the dye liquor at a speed of 20-60 m/min.
8. An apparatus for using the dyeing method according to claims 1 to 5, characterized in that it comprises:
a) -a pre-washing device (1);
b) a dyeing apparatus (30);
c) a washing and pre-drying device (40);
d) a sizing device (60);
e) a drying device (70).
9. The apparatus of claim 8, wherein the pre-washing apparatus comprises:
two or several tanks (2) containing a prewashing liquid (10, 15), a guide roll (3) for introducing the yarn into the prewashing liquid (10), a guide roll (4) for guiding the yarn between two squeeze rolls (5) which guide the yarn to the guide roll (6), two squeeze rolls (7) for extracting excess liquid, a guide roll (8) for introducing the yarn into the prewashing liquid (15) in the second tank (2), a guide roll (9) for guiding the yarn to the two squeeze rolls (12), a guide roll (11) for the yarn to re-enter the prewashing liquid (15) and two squeeze rolls (13) for drying the yarn as it exits the second tank (2).
10. The apparatus according to claim 8, characterized in that the dyeing apparatus (30) comprises: 8 series of tanks (35) containing a bath of 3-indoxyl, a series of rollers (31, 32, 33, 34, 36 and 37) related to each tank, rollers (36) arranged between the tanks in such a way that there is one roller (36) between the first and second tank (35), two rollers (36) between the second and third tank, three rollers (36) between the third and fourth tank, and so on, until the eighth tank (35), eight rollers (36) following the tank, the rollers (36) arranged in such a way as to progressively increase the period of exposure of the yarn to air, so that the oxidation proceeds in such a way that, if the oxidation between the first tank (35) and the second tank is set to the value x, the following values are obtained in sequence:
oxidation number between first and second cell = x
Oxidation number between second and third cell =2 ×
Oxidation number between third and fourth cell =3 ×)
Oxidation number between the fourth and fifth cells =4 ×
Oxidation number between fifth and sixth grooves =5 ×
Oxidation number between sixth and seventh grooves =6 ×
Oxidation number between the seventh and eighth grooves =7 ×
After the eighth slot =8 x.
11. The apparatus according to claim 8, characterized in that the washing and pre-drying apparatus (40) comprises: a series of tanks (41,42,43,44 and 45) and associated rolls (46, 47 and 48) associated with each tank, wherein the first tank (41) contains water, the tanks (42, 43 and 44) contain acetic acid and the tank (45) contains water, such that the pH in the last tank is between 6 and 7 and, upon exiting thetank (45), there is a series of rolls (50) that dry the yarn.
12. The apparatus according to claim 8, characterized in that the sizing apparatus (60) comprises: a tank (62) containing the resin blend.
13. The apparatus according to claim 8, characterized in that in stage a) the prewashing liquid used comprises a fatty alcohol phosphate derivative, such AS FINBIL AS.
14. The apparatus according to claim 8, characterized in that the dye liquor in the vat (35) comprises: an aqueous solution of 3-indoxyl containing 6 to 8% by weight of pure 3-indoxyl.
15. The apparatus according to claim 8, characterized in that in stage c) the acetic acid solution in tank (42) is obtained by adding 20 cc/l 50% acetic acid to tank (42), the acetic acid solution in tank (43) is obtained by adding 10 cc/l 50% acetic acid to tank (43), and the acetic acid solution in tank (44) is obtained by adding 5 cc/l 50% acetic acid to tank (44).
16. The apparatus according to claim 8, characterized in that the resin blend during stage d) comprises a mixture of:
10-50 g/l Polyalkylamine Quaternary ammonium salt
10-50 g/l fluorocarbon resin
10-200 g/l acrylic resin
1-20 g/l autocatalytic polysiloxane
10-200 g/l polyurethane resin.
17. The apparatus according to claim 8, characterized in that stage b) can be repeated several times by using 16, 24 dye tanks (35) instead of 8 dye tanks.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001026011A CN1330824C (en) | 2000-02-23 | 2000-02-23 | Byeing method spinning material using 3-indoxyl indigo blue and equipment utilizing said method |
| HK01101953A HK1032085A1 (en) | 2000-02-23 | 2001-03-19 | Process for dyeing a textile material with indigo using indoxyl, and system for exploiting the process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001026011A CN1330824C (en) | 2000-02-23 | 2000-02-23 | Byeing method spinning material using 3-indoxyl indigo blue and equipment utilizing said method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1282816A true CN1282816A (en) | 2001-02-07 |
| CN1330824C CN1330824C (en) | 2007-08-08 |
Family
ID=4576496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001026011A Expired - Fee Related CN1330824C (en) | 2000-02-23 | 2000-02-23 | Byeing method spinning material using 3-indoxyl indigo blue and equipment utilizing said method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1330824C (en) |
| HK (1) | HK1032085A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389135A (en) * | 2014-12-01 | 2015-03-04 | 太仓市高泰机械有限公司 | Textile yarn washing machine |
| CN106120202A (en) * | 2016-08-09 | 2016-11-16 | 浙江富润纺织有限公司 | Device is cleaned in the slub dyeing of a kind of high-grade wool worsted fabric |
| CN109137175A (en) * | 2018-10-09 | 2019-01-04 | 永安市日发纺织有限公司 | A kind of twisting machine |
| CN109137155A (en) * | 2018-10-09 | 2019-01-04 | 永安市日发纺织有限公司 | A kind of doubling is twisted thread dyeing and finishing all-in-one machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2066706B (en) * | 1979-12-21 | 1984-05-23 | Godau E | Continuous vat dyeing of warp threads as a sheet |
| US4283198A (en) * | 1980-01-11 | 1981-08-11 | Fletcher John M | Inert atmosphere indigo dyeing |
| US4313235A (en) * | 1980-05-27 | 1982-02-02 | Gotovtseva Ljubov A | Method of treating cotton cloth of twisted yarn in loom state |
| FR2597125B1 (en) * | 1986-04-10 | 1988-08-19 | Faucheur Ste Nle Ets | PROCESS FOR TREATING TEXTILE MATERIALS AND DIFFUSING STATION FOR DYE MATERIAL IN TEXTILE MATERIAL |
| DE9002793U1 (en) * | 1989-03-13 | 1990-09-06 | Benz, Gottlieb, Flums | Equipment for wet and/or dry treatment of web, yarn, strand or thread-shaped textile goods |
| DE4223556C2 (en) * | 1992-07-19 | 1996-05-02 | Sucker & Franz Mueller Gmbh | Process for the oxidation of indigo dye and oxidation path |
| TW251325B (en) * | 1993-03-30 | 1995-07-11 | Basf Ag |
-
2000
- 2000-02-23 CN CNB001026011A patent/CN1330824C/en not_active Expired - Fee Related
-
2001
- 2001-03-19 HK HK01101953A patent/HK1032085A1/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389135A (en) * | 2014-12-01 | 2015-03-04 | 太仓市高泰机械有限公司 | Textile yarn washing machine |
| CN106120202A (en) * | 2016-08-09 | 2016-11-16 | 浙江富润纺织有限公司 | Device is cleaned in the slub dyeing of a kind of high-grade wool worsted fabric |
| CN109137175A (en) * | 2018-10-09 | 2019-01-04 | 永安市日发纺织有限公司 | A kind of twisting machine |
| CN109137155A (en) * | 2018-10-09 | 2019-01-04 | 永安市日发纺织有限公司 | A kind of doubling is twisted thread dyeing and finishing all-in-one machine |
| CN109137175B (en) * | 2018-10-09 | 2024-02-06 | 永安市日发纺织有限公司 | Twisting machine |
| CN109137155B (en) * | 2018-10-09 | 2024-03-26 | 永安市日发纺织有限公司 | Doubling, twisting, dyeing and finishing all-in-one machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1330824C (en) | 2007-08-08 |
| HK1032085A1 (en) | 2001-07-06 |
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