CN102409495A - Pure cotton yarn-dyed cloth caustic soda mercerizing process and device - Google Patents
Pure cotton yarn-dyed cloth caustic soda mercerizing process and device Download PDFInfo
- Publication number
- CN102409495A CN102409495A CN2011102729224A CN201110272922A CN102409495A CN 102409495 A CN102409495 A CN 102409495A CN 2011102729224 A CN2011102729224 A CN 2011102729224A CN 201110272922 A CN201110272922 A CN 201110272922A CN 102409495 A CN102409495 A CN 102409495A
- Authority
- CN
- China
- Prior art keywords
- water
- shell
- heat exchanger
- alkali
- caustic soda
- 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.)
- Granted
Links
Images
Landscapes
- Coloring (AREA)
Abstract
The invention discloses a pure cotton yarn-dyed cloth caustic soda mercerizing process and device. The process is as follows: yarn-dyed cloth which is padded by using alkali liquor enters a spraying zone so as to be subjected to water spraying and caustic soda removal, the yarn-dyed cloth enters a stable zone so as to be subjected to water leaching and caustic soda removal, then the yarn-dyed cloth enters a rinsing zone so as to be subjected to rinsing and caustic soda removal, the hot water discharged from the rinsing zone passes through a shell-and-tube heat exchanger so as to be cooled to 55-60 DEG C and then is sent into the stable zone so as to be subjected to water leaching and caustic soda removal, the 50-55 DEG C hot water discharged from the stable zone enters the spraying zone to be used as the spray water, and the water added from the outside passes through the shell-and-tube heat exchanger so as to be heated and sent into the rinsing zone. The process has the following advantages: on the premise of nearly not affecting the caustic soda mercerizing alkali-removing effect of the pure cotton yarn-dyed cloth, the color stability and color fastness of the pure cotton yarn-dyed cloth can be increased, simultaneously the energy consumption in the machining process can be saved and the water treatment burden caused by dye detachment can be lowered.
Description
Technical field
The present invention relates to the textile dyeing and finishing technology, especially relate to alkali mercerized device of Cotton Colored Woven Fabric and technology.
Background technology
The textile dyeing and finishing industry is in the arrangement process of Cotton Colored Woven Fabric; In order to reduce of the negative effect of cotton fiber surface ruffle to fabric sheen; Give Cotton Colored Woven Fabric gloss bright color bright-coloured external appearance characteristic; Improve the adsorptivity and the washing shrinkage of Cotton Colored Woven Fabric simultaneously, common in the industry way is that Cotton Colored Woven Fabric is carried out alkali mercerized processing.
The alkali mercerized technology of Cotton Colored Woven Fabric that generally adopts at present is divided into five main steps:
1, alkali lye pads: Cotton Colored Woven Fabric is fully soaked in the high alkali liquid of 180-320g/l.
2, the stage of reaction: a series of chemistry and variation physics, the treatment effect that obtains designing take place in the cotton fiber behind the alkali immerging under the infiltration of alkali lye.
3, spray phase: water or light alkali spray Cotton Colored Woven Fabric, reduce the process of carrying however, residual base on the COTTON FABRIC fiber, COTTON FABRIC can carry out under the stretching of pin pincers usually in this stage, and the temperature of spray water or light alkali is usually more than 70 ℃.
4, the stabilization sub stage: the COTTON FABRIC after will reducing with alkali number embathes in the water of uniform temperature, further removes however, residual base, obtains the outward appearance of gloss, stable size simultaneously, the adsorptivity of improvement and washing shrinkage.This process embathe temperature usually more than 80 ℃.
5, water-washing step: in water washing chamber, remove the however, residual base of cloth cover up hill and dale, obtain the Cotton Colored Woven Fabric after alkali mercerized.In order to guarantee the thorough of lixiviating, the treatment temperature in this stage is generally more than 85 ℃.
Consult Fig. 1; Structural representation for alkali mercerized device in the prior art; Wherein, the spray water temperature in spray district 1 is 70 ± 5 ℃, and the water temperature of stable region 2 is 80 ± 5 ℃; Water wash zone 8 comprise water temperature at 85 ℃ primary water tank-washer 3, water temperature at 85 ℃ secondary water tank-washer 4, water temperature at three grades of water washing chambers 5 of 60 ℃ and water temperature final stage water washing chamber 6 at 70 ℃, on secondary water tank-washer 4, three grades of water washing chambers 5 and final stage water washing chamber 6, be respectively equipped with extraneous water pipe.The yarn-dyed fabric that padded high alkali liquid is accomplished lixiviatings through spray district 1, stable region 2, primary water tank-washer 3, secondary water tank-washer 4, three grades of water washing chambers 5 and final stage water washing chamber 6 backs in order, and the hot water that goes out from 3 overflows of primary water tank-washer is as the water of stable region 2.
In the alkali mercerized technology of prior art the spray with the stabilization sub stage adopted higher lixiviating temperature, wherein former because of:
1, known in the industry higher lixiviating temperature is more conducive to the removal of however, residual base; The fabric however, residual base that lixiviating is effective to be embodied in after handling under identical lixiviating time and the water consumption is less, and also can being embodied in the short time and the less water yield, to handle the remaining alkali number of fabric down suitable.
2, for saving the lixiviating water; Generally adopt adverse current water-washing method lixiviating in the industry; Be the stable region and the water of spray district usefulness is to be come by the water washing chamber adverse current of back, and the temperature in the water washing chamber is 85 ℃, adverse current still has more than 80 ℃ during to the stable region; Adverse current still has more than 70 ℃ when spray is distinguished, and need not other heating and can realize the high temperature lixiviating.In traditional processes well known, generally believe that this is optimum operational factor.
Because most of cotton fiber adopts reactive dyeing; And REACTIVE DYES easy hydrolytic reactions under high temperature and alkali condition; Breaking off dye molecule is connected with chemistry between the fiber; Cause change color and COLOR FASTNESS to reduce, and the degree that this variation takes place can at high temperature show more significantly.Contain the REACTIVE DYES kind of special construction for some behind the normal high temperature lixiviating, its water perspiration fastness does not reach national standard.Therefore, also need add and do washing step and improve COLOR FASTNESS, cause the rising of energy consumption this veriety.Cotton Colored Woven Fabric just in time is the condition that is in a kind of like this high temperature and alkalescence when alkali mercerized spray district of tradition and stable region lixiviating, so above-mentioned dyestuff hydrolysis phenomenon must take place, causes Cotton Colored Woven Fabric change color and color fastness decreased.This has become a universal phenomenon in the industry, how to improve this phenomenon also as an industry difficult problem long-term existence.
Summary of the invention
The purpose of this invention is to provide a kind of alkali mercerized technology of Cotton Colored Woven Fabric that can improve Cotton Colored Woven Fabric color and COLOR FASTNESS and minimizing energy consumption of unit product.
Another object of the present invention provides a kind of alkali mercerized device of Cotton Colored Woven Fabric that can effectively reduce the lixiviating coolant-temperature gage.
Technical solution of the present invention is: the alkali mercerized device of a kind of Cotton Colored Woven Fabric; Comprise spray district, stable region and water wash zone; It also is provided with shell-and-tube heat exchanger, the pipe side entrance of the delivery port tube connector shell heat exchanger of wherein said water wash zone, and the pipe side outlet of shell-and-tube heat exchanger connects the water inlet of said stable region; The shell-side inlet of shell-and-tube heat exchanger connects extraneous moisturizing, and the shell-side outlet connects the water supplement port of said water wash zone.
Behind the delivery port of water wash zone, shell-and-tube heat exchanger is set; Can absorb the heat of washing water, reduce stable and spray and use coolant-temperature gage, thus the hydrolysis of minimizing dyestuff in stable region and spray district; Thereby improve the COLOR FASTNESS of fabric, reduced the energy consumption of water wash zone simultaneously.
The alkali mercerized technology of a kind of Cotton Colored Woven Fabric; May further comprise the steps: the yarn-dyed fabric after padding through alkali lye is behind spray district shower water lixiviating; Get into stable region water logging eccysis alkali; Get into washing lixiviating in the water wash zone again; Send into the stable region water logging after the hot water of from water wash zone, discharging is cooled to 55-60 ℃ through shell-and-tube heat exchanger and wash yarn-dyed fabric except that alkali, 50-55 ℃ the hot water of discharging from the stable region gets into the spray district as the shower water use, and extraneous moisturizing is sent into water wash zone after heating up through the shell-and-tube heat exchanger heat exchange.Adopt this technology; Can the shower water temperature in spray district be reduced to 50-55 ℃ from existing 70 ℃; The temperature of embathing of stable region is reduced to 55-60 ℃ from 80 ℃; Can effectively reduce the hydrolysis degree of Cotton Colored Woven Fabric fiber surface dyestuff, reduce of the negative effect of lixiviating process, improve the COLOR FASTNESS of fabric simultaneously the cloth cover color.
Advantage of the present invention is: under the prerequisite that influences the alkali mercerized lixiviating effect of textile yarn-dyed fabric hardly; The colour stability and the COLOR FASTNESS of textile yarn-dyed fabric are improved; Simultaneously can also save the energy consumption consumption in the process, alleviate the water treatment burden that causes because of the dyestuff disengaging.
Description of drawings
Accompanying drawing 1 is the structural representation of alkali mercerized device in the prior art;
Accompanying drawing 2 is the structural representation of alkali mercerized device in the embodiment of the invention;
1, spray district, 2, the stable region, 3, the primary water tank-washer, 4, the secondary water tank-washer, 5, three grades of water washing chambers, 6, the final stage water washing chamber, 7, shell-and-tube heat exchanger, 8, water wash zone.
The specific embodiment
Embodiment:
Consult Fig. 2, the alkali mercerized device of a kind of Cotton Colored Woven Fabric comprises spray district 1, stable region 2 and water wash zone 8, and wherein water wash zone 8 comprises primary water tank-washer 3, secondary water tank-washer 4, three grades of water washing chambers 5 and final stage water washing chambers 6.It also is provided with shell-and-tube heat exchanger 7; The pipe side entrance of the delivery port tube connector shell heat exchanger 7 of primary water tank-washer 3 wherein; The pipe side outlet of shell-and-tube heat exchanger 7 connects the water inlet of stable region 2; The delivery port of stable region 2 connects the water inlet in spray district 1, and the shell-side inlet of shell-and-tube heat exchanger 7 connects extraneous moisturizing, and the shell-side outlet connects the water supplement port of final stage water washing chamber 6.
The alkali mercerized technology of a kind of Cotton Colored Woven Fabric; May further comprise the steps: behind the shower water lixiviating that the yarn-dyed fabric after padding through alkali lye is 1 usefulness 50-55 ℃ in the spray district; Get into stable region 2 usefulness 55-60 ℃ water logging eccysis alkali; Get in the water wash zone 8 water temperature successively again and be 90 ℃ primary water tank-washer 3, secondary water tank-washer 4, water temperature that water temperature is 90 ℃ and be in final stage water washing chamber 6 washings that 60 ℃ three grades of water washing chambers 5 and water temperature be 70 ℃ and lixiviating; Send into stable region 2 water loggings after the hot water of from primary water tank-washer 4, discharging is cooled to 55-60 ℃ through shell-and-tube heat exchanger 7 and wash yarn-dyed fabric except that alkali; 2 50-55 ℃ the hot water of discharging get into spray district 1 and use as shower water from the stable region; Extraneous moisturizing is sent into final stage water washing chamber 6 after heating up through shell-and-tube heat exchanger 7 heat exchange, and the water outlet of final stage water washing chamber 6 gets into secondary water tank-washer 4, and the water outlet of secondary water tank-washer 4 gets into primary water tank-washer 3.Three grades of water washing chambers 5 are directly from extraneous moisturizing, and water outlet is directly discharged.
In order to further specify beneficial effect of the present invention, use multiple Cotton Colored Woven Fabric in the prior art, respectively according to after existing technology and the processes of the present invention, detect COLOR FASTNESS, the result is as shown in the table:
| Trade name | The COLOR FASTNESS of existing technology | The COLOR FASTNESS of technology of the present invention | COLOR FASTNESS improves |
| The blue look poplin cloth of |
4 | 4.5 | 0.5 |
| The red blue bar jacquard weave of 40X80/2 | 3.5 | 4.5 | 1 |
| The emerald green blue jacquard weave of 40X80/2 | 4.5 | 4.5 | 0 |
| The emerald green blue jacquard weave of 60S | 3.5 | 4.5 | 1 |
| The shallow blue jacquard weave of |
4 | 4.5 | 0.5 |
| The purple informal voucher jacquard weave of |
4 | 4.5 | 0.5 |
| The blue look satin of 40X80/2 | 4 | 4 | 0 |
| The blue white square poplin cloth of 120S/2 | 4 | 4.5 | 0.5 |
| The deep blue poplin cloth of |
4 | 4.5 | 0.5 |
| 40S black and white |
4 | 4 | 0 |
| The red Lange poplin cloth of 40S | 3.5 | 4.5 | 1 |
| The blue white square poplin cloth of |
4 | 4 | 0 |
| The red white orchid three look grid poplin cloth of |
4 | 4.5 | 0.5 |
| 40S white orchid green card four look |
4 | 4.5 | 0.5 |
| The blue three look grid poplin cloth of 40S black and white | 4 | 4.5 | 0.5 |
| 50S lilac poplin cloth | 4.5 | 4.5 | 0 |
| The emerald green blue poplin cloth of |
3 | 3.5 | 0.5 |
| Variegated poplin cloth of 40X60 | 3.5 | 4.5 | 1 |
| 50X80/2 black poplin cloth | 4.5 | 4.5 | 0 |
| The variegated grid poplin cloth of 80S/2X40 | 4 | 4.5 | 0.5 |
| The variegated grid poplin cloth of 80S/2X50 | 4 | 4.5 | 0.5 |
| 80S/2 avy blue satin | 3.5 | 4.5 | 1 |
| The green three look grid poplin cloth of 80S/2 white orchid | 3.5 | 4 | 0.5 |
| The sub-poplin cloth of the blue white square of 80S/2 | 3.5 | 4.5 | 1 |
| 80S/2 avy blue poplin cloth | 3.5 | 4 | 0.5 |
| The blue vitta poplin cloth of 80S/2 | 4 | 4.5 | 0.54 |
| The blue informal voucher FIGURED CLOTH of |
4 | 4.5 | 0.5 |
| 40S avy blue FIGURED |
4 | 4.5 | 0.5 |
| White red the FIGURED CLOTH of |
4 | 4.5 | 0.5 |
| Variegated FIGURED CLOTH of |
4 | 4.5 | 0.5 |
| The blue informal voucher FIGURED CLOTH of |
4 | 4.5 | 0.5 |
| 80/2X60 peony FIGURED CLOTH | 3.5 | 4.5 | 1 |
| The blue informal voucher FIGURED CLOTH of 80/2X60 | 4.5 | 4.5 | 0 |
| The sub-FIGURED CLOTH of the blue white square of 80/2X60 | 4.5 | 4.5 | 0 |
| 100/2 blue informal voucher drillipg | 4.5 | 4.5 | 0 |
| 32S avy blue twill | 2.5 | 2.5 | 0 |
| 32S avy |
2 | 2.5 | 0.5 |
| The blue white green three look grid poplin cloth of |
4 | 4.5 | 0.5 |
| The emerald green blue poplin cloth of 40S | 3.5 | 4 | 0.5 |
| The variegated grid poplin cloth of 40S | 3.5 | 4.5 | 1 |
| The yellowish-white blue three look grid poplin cloth of |
4 | 4.5 | 0.5 |
| The green three look grid poplin cloth of 60S white orchid | 4.5 | 4.5 | 0 |
| 80S/2X40 sky- |
4 | 4.5 | 0.5 |
| 80S/2 sky- |
4 | 4.5 | 0.5 |
Can find out the existing Cotton Colored Woven Fabric of same kind, the COLOR FASTNESS after using processes of the present invention from last table; Compare the COLOR FASTNESS after the existing processes, part has clear improvement, and part is improved a little and improved; Part does not change; But the case that any COLOR FASTNESS reduces do not occur, so can find out from the overall statistic data, technology of the present invention has the good effect of improving to COLOR FASTNESS.Each row (each check sample) in the subordinate list data all is the COLOR FASTNESS contrast after fabric of the same race adopts different lixiviating technologies; Since be fabric of the same race; Just eliminated the technique effect that the fabric self character brings, and embodiment should all be the beneficial effect of new technology.
Above-listed detailed description is to the specifying of one of the present invention possible embodiments, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (2)
1. alkali mercerized device of Cotton Colored Woven Fabric; Comprise spray district, stable region and water wash zone; It is characterized in that: it also is provided with shell-and-tube heat exchanger, the pipe side entrance of the delivery port tube connector shell heat exchanger of wherein said water wash zone, and the pipe side outlet of shell-and-tube heat exchanger connects the water inlet of said stable region; The shell-side inlet of shell-and-tube heat exchanger connects extraneous moisturizing, and the shell-side outlet connects the water supplement port of said water wash zone.
2. alkali mercerized technology of Cotton Colored Woven Fabric; May further comprise the steps: the yarn-dyed fabric after padding through alkali lye is behind spray district shower water lixiviating; Get into stable region water logging eccysis alkali; Get into washing lixiviating in the water wash zone again; It is characterized in that: send into the stable region water logging after the hot water of from water wash zone, discharging is cooled to 55-60 ℃ through shell-and-tube heat exchanger and wash yarn-dyed fabric except that alkali, 50-55 ℃ the hot water of discharging from the stable region gets into the spray district as the shower water use, and extraneous moisturizing is sent into water wash zone after heating up through the shell-and-tube heat exchanger heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110272922 CN102409495B (en) | 2011-09-15 | 2011-09-15 | Pure cotton yarn-dyed cloth caustic soda mercerizing process and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110272922 CN102409495B (en) | 2011-09-15 | 2011-09-15 | Pure cotton yarn-dyed cloth caustic soda mercerizing process and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102409495A true CN102409495A (en) | 2012-04-11 |
| CN102409495B CN102409495B (en) | 2013-08-14 |
Family
ID=45911823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110272922 Active CN102409495B (en) | 2011-09-15 | 2011-09-15 | Pure cotton yarn-dyed cloth caustic soda mercerizing process and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102409495B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014071677A1 (en) * | 2012-11-12 | 2014-05-15 | 无锡市天然绿色纤维科技有限公司 | Continuous mercerizing machine for braids and processing method thereof |
| CN110685086A (en) * | 2019-09-29 | 2020-01-14 | 海宁和兴源纺织有限公司 | Method for cleaning cotton fabric |
| CN111172644A (en) * | 2019-11-28 | 2020-05-19 | 江苏悦达家纺有限公司 | Production method of colorful ink jacquard fabric |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2678483A (en) * | 1952-05-28 | 1954-05-18 | Springs Cotton Mills | Tenter frame washing system for mercerizing ranges |
| US4074969A (en) * | 1974-07-19 | 1978-02-21 | Cluett, Peabody & Co., Inc. | Process for recovery and reuse of ammonia in a liquid ammonia fabric treating system |
| US4372135A (en) * | 1979-05-11 | 1983-02-08 | Greenville Steel Textile Machinery Corporation | Horizontal washer apparatus |
| CN1350084A (en) * | 2001-11-05 | 2002-05-22 | 浙江金达创业股份有限公司 | High temperature silk refining machine |
| CN201268783Y (en) * | 2008-08-06 | 2009-07-08 | 上海和晓印花有限公司 | Tubular knit mercerizer with gas expansion fabric expansion apparatus |
-
2011
- 2011-09-15 CN CN 201110272922 patent/CN102409495B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2678483A (en) * | 1952-05-28 | 1954-05-18 | Springs Cotton Mills | Tenter frame washing system for mercerizing ranges |
| US4074969A (en) * | 1974-07-19 | 1978-02-21 | Cluett, Peabody & Co., Inc. | Process for recovery and reuse of ammonia in a liquid ammonia fabric treating system |
| US4372135A (en) * | 1979-05-11 | 1983-02-08 | Greenville Steel Textile Machinery Corporation | Horizontal washer apparatus |
| CN1350084A (en) * | 2001-11-05 | 2002-05-22 | 浙江金达创业股份有限公司 | High temperature silk refining machine |
| CN201268783Y (en) * | 2008-08-06 | 2009-07-08 | 上海和晓印花有限公司 | Tubular knit mercerizer with gas expansion fabric expansion apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014071677A1 (en) * | 2012-11-12 | 2014-05-15 | 无锡市天然绿色纤维科技有限公司 | Continuous mercerizing machine for braids and processing method thereof |
| CN110685086A (en) * | 2019-09-29 | 2020-01-14 | 海宁和兴源纺织有限公司 | Method for cleaning cotton fabric |
| CN111172644A (en) * | 2019-11-28 | 2020-05-19 | 江苏悦达家纺有限公司 | Production method of colorful ink jacquard fabric |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102409495B (en) | 2013-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105421105B (en) | A kind of polyester-cotton blend disperse dyes and reactive dye One Bath Dyeing Process | |
| CN102409565A (en) | One-bath one-step process for dispersing/reactive dye of cotton-polyester blended fabric | |
| CN103790041A (en) | Method for dyeing short-process environment-friendly coating padding jean fabric | |
| CN102140766B (en) | Fabric process for pigment dyeing, roll-drying and topping | |
| CN103243590A (en) | Cotton/viscose glue and acetate fiber mixed fabric dyeing and finishing process | |
| CN103726217B (en) | A kind of staple in bulk wets short steaming colouring method and system | |
| CN102852013A (en) | Dispersing/reducing printing process for polyester/cotton blended fabric | |
| CN102936859A (en) | One-bath one-step dyeing method for cotton and nitrile blended fabric | |
| CN109403098A (en) | Polyester knitted fabric high color fastness lacks watermark dyeing technique | |
| CN102936849B (en) | A kind of enzymatic scouring-efficient cryogenic is scouringed and bleaching treatment process | |
| CN102409495B (en) | Pure cotton yarn-dyed cloth caustic soda mercerizing process and device | |
| CN104499308B (en) | The cheese with reduced dye colouring method of polyester fiber | |
| CN110512437A (en) | A kind of tencel, fiber crops, cotton intertexture weft elastic fabric dyeing and finishing technology | |
| CN104894898A (en) | Cold pad-batch bleaching and dyeing method for cotton knitted fabrics | |
| CN102926236B (en) | Dyeing and finishing technology of Lyocell and cotton and spun silk blended fabric | |
| CN102767103B (en) | Fixation alkali for rolling-drying-steaming dyeing of reactive dye | |
| CN109440497A (en) | A kind of dyeing and finishing method of polyamide fibre and viscose blended fabric | |
| CN106638053A (en) | One-bath dyeing technology for polyester-cotton blended fabric by natural vegetable dye | |
| CN104278550A (en) | Scouring-bleaching and active dye dyeing one-bath process technology for cotton woven fabric | |
| CN109322178A (en) | It is a kind of to wash the/dyeing and finishing processing method of cellulose fibre intertexture jacquard fabric | |
| CN108103805A (en) | A kind of looped fabric gas-liquid environmental protection bleaching and dyeing method | |
| CN101929084B (en) | Method for dyeing slubby yarn cotton fabrics into raindrop or silk rain style | |
| CN106638025A (en) | Dyeing and finishing process for Chinese velvet | |
| CN103669046A (en) | Synchronous dehairing and dyeing technology for polyester cotton mixed fabric | |
| CN108642852A (en) | A kind of production technology of two acetic acid fabric |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |