EP0683829A1 - Process for desizing sized textile materials. - Google Patents
Process for desizing sized textile materials.Info
- Publication number
- EP0683829A1 EP0683829A1 EP94906178A EP94906178A EP0683829A1 EP 0683829 A1 EP0683829 A1 EP 0683829A1 EP 94906178 A EP94906178 A EP 94906178A EP 94906178 A EP94906178 A EP 94906178A EP 0683829 A1 EP0683829 A1 EP 0683829A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- raw fabric
- water
- size
- fabric
- heated
- 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
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
- D06L1/14—De-sizing
Definitions
- the present invention relates to a process for desizing textile goods loaded with size, in which the size is washed out with water, the resulting size solution is separated from the fabric and then used again as completely as possible for size.
- Sizes are more or less easily water-soluble polymers that are applied to textile threads in order to make them more durable and slippery for a processing process, especially weaving. After the processing, they usually have to be removed (desizing). According to the state of the art, desizing is carried out by allowing the textile material (raw fabric), which is dry from the processing (weaving) and loaded with size, to run through a water bath and then squeezed (e.g. wide-angle washing machine, jigger, reel runner, strand washing machine). Depending on the water solubility of the size, it may be advisable to use higher temperatures and / or surfactants and / or enzymes. For reasons of economy and environmental protection, efforts are made to reuse as high a proportion as possible of the size washed off the fabric.
- DE-C-2 937 002 describes a process for desizing web-like fabric, in which the size is continuously washed out with water, the resulting size solution is separated from the fabric and then, if possible, completely re-sized is used, which is characterized in that the still dry, loaded with size is first wetted with the size solution separated after washing, so that the fabric and the size adhering to it by swelling and / or solvation from the subsequently separated and again Take up water with the sizing agent used and thereby increase its concentration and only then the fabric is subjected to the actual washing out process.
- the process described is therefore based on first allowing the dry textile material (raw fabric) loaded with size to pass through a size solution obtained from a previous washing process and then squeezing it off.
- a disadvantage of the described method is the fact that the dry fabric must be loaded with essentially the same size as the size solution used, from which water is to be removed by treating the dry fabric. Furthermore, only those sizing agents are considered suitable which have the lowest possible viscosity and which also have a high swelling rate at room temperature. In this context, especially acrylic-based sizing agents are considered suitable.
- DE-A-37 03 049 deals with a method for bleaching and an apparatus for carrying out the method.
- an oxidative bleaching agent is applied to the yarn or fabric and the yarn or fabric impregnated therewith is heated with the release of oxidizing constituents from the bleaching agent.
- the yarn or sheet is heated by irradiation with microwaves of a wavelength between approximately 1 m and 10 "2 m.
- the heating device has an insertion opening and discharge opening for the yarn or sheet to be bleached. Inside the heating device there is at least one magnetron for production of microwaves, at least one coupling element and at least one waveguide arranged, which extends transversely to the endless web.
- the object of the present invention is to provide a process for desizing of textile material (raw fabric) loaded with size, which also enables the use of sizes with higher viscosity and lower swelling rate.
- the process is said to lead to an improved consumption of size from the textile material loaded with size.
- the invention relates to a process for desizing textile material (raw fabric) loaded with size, in which the raw fabric is treated with water and the size solution adhering to the raw fabric is separated, characterized in that the raw fabric is heated after treatment with water and then the size solution adhering to the raw fabric is separated.
- the method according to the invention is described in more detail below.
- the textile fabrics known from the prior art such as woven goods made of polyester, linen and / or cotton, which are loaded with water-soluble size, are used as the raw fabric.
- Usual water-soluble sizing agents are synthetic and / or (mostly modified) natural high polymers, such as glue-like proteins, acrylate-based polymers, carboxymethyl cellulose, alginates, polyvinyl alcohol and water-soluble starch products.
- Preferred sizing agents are polyvinyl alcohol and / or carboxymethyl cellulose.
- the sizing pad on the textile is described in the following three work steps replaced:
- the raw fabric When the raw fabric is treated with water in accordance with work step No. 1, the raw fabric is usually wetted with pure water at a temperature in the range from 60 to 100.degree.
- textile auxiliaries such as surfactants and / or sequestering agents, is possible, but is generally not desired.
- washing units of the roller skid type are particularly suitable for water impregnation with intimate contact, the vertical fabric guidance and partitioning being particularly advantageous. It is not necessary for the washing unit to be fully flooded, but the lower units must
- Babcock, GB Babcock, GB
- the water absorption of the raw fabric is generally between 60 and 150% by weight.
- the extent of water absorption depends on various factors, such as the type of raw fabric, the water temperature, the application process and / or the contact between the raw fabric and water.
- the contact times between water and raw fabric during water impregnation are mainly based on the time required to completely and evenly wet the fabric and so there is sufficient water available for the size coat to be removed ensure.
- the raw fabric loaded with water is heated (work step no. 2), heating to temperatures between 60 to 140 ° C., preferably between 90 and 130 ° C., being sufficient.
- the heating is usually carried out by irradiation with microwaves or by treatment with steam.
- this is preferably irradiated with microwaves of a wavelength between approximately 1 m and 10 "2 m. Due to the relatively simple possibilities of controlling the microwaves, which is done, for example, by varying the wavelength or by the energy per unit area , the raw tissue thus irradiated can be heated in a particularly simple manner. Nor does the irradiated raw tissue heat up so strongly that fiber damage cannot occur.
- the respectively used wavelength or frequency and the energy of the irradiation of the The impregnated raw fabric used depends on the impregnated raw fabric to be irradiated, ie the type of fiber, the weight and the integration, the size used and the irradiation time.
- the impregnated raw fabric with microwaves of one wave is preferred irradiated between about 3J 0 "1 m and about 5J 0 " 2 m.
- heating it should be noted that at the relatively long wavelengths mentioned above, ie those in the meter or centimeter range, there is a relatively rapid heating to temperatures between 60 and 140 ° C., preferably 80 to 100 ° C., during at shorter wavelengths, ie those in the millimeter range and smaller, the impregnated raw material is not heated as much.
- the device required for heating generally comprises a heating device which is closed on all sides and into which the impregnated raw fabric is introduced via an insertion device provided on the heating device. Furthermore, the heating device is provided with an execution device, which is usually arranged opposite to the insertion opening and serves for the execution of the impregnated and irradiated raw fabric from the heating device. A unit for generating the microwaves is located within the heating device. Such a heating device is described in detail in DE-A-37 03 049.
- the impregnated raw fabric can also be heated by treatment with steam, the temperature usually being between 60 and 140 ° C.
- the water vapor used can be saturated (absolute air humidity 100%) or unsaturated and can be used at normal pressure or overpressure up to 6 bar.
- the temperature of the steam is 60 to about 100 ° C, preferably 80 to 100 ° C, and when heated under positive pressure, the temperature is 100 to 140 ° C.
- the textile material After heating, the textile material is freed as much as possible of adhering sizing agent solution (work step no. 3).
- the sizing agent solution is usually detached using known units such as a squeeze mechanism, suction drum or suction slit.
- the residual moisture of the textile goods after separation is approximately 30 to 60% by weight based on the weight of the goods.
- the size solution obtained after separation has a content of up to 60% size based on the amount of size used.
- the amount of size removed is in only a little water, namely in about 20 to 50% water extract, based on the weight of the textile.
- this sizing solution can be sent to the sizing shop, where new sizing material can be added, so that the weaving mill can be reused.
- the previously common concentration of the sizing agent solution e.g. by evaporation or by ultrafiltration is not necessary.
- the desized textile material is fed to the usual further processing.
- An advantage over the methods customary in the prior art in this method is that the sizing agent solution obtained after the desizing process can be used completely and without losses in the sizing department for the preparation of new sizing liquor. After desizing, a sizing agent solution with up to 60% of the sizing agent originally on the raw fabric is obtained and this is completely recycled in the sizing shop.
- 1000 kg of a fabric with a plain weave consists of 560 kg of warp thread material and 440 kg of weft thread material.
- sizing agent 62 kg
- Vinarol UF modified polyvinyl alcohol
- the raw fabric is impregnated with water so that the Water absorption of the fabric is 100% by weight, based on the weight of the raw goods.
- the fabric is then heated in a commercially available steamer with saturated steam at a temperature of 102 ° C. over a period of 3 minutes.
- the woven fabric After leaving the heating device, the woven fabric is passed through a high-performance squeezing unit and the attached sizing agent solution is squeezed out.
- This sizing concentrate is fed to the sizing shop and presented there in the sizing trough.
- About 120 liters of condensate are produced for heating and tempering the size liquor by means of steam, so that 620 liters of size liquor are available from the size shop.
- 34 kg of fresh sizing agent are dissolved in this sizing liquor so that the sizing agent concentration is again 62 g / l.
- the size recovery rate is therefore 45%.
- This size fleet is used to finish 560 kg of new warp thread material, which results in 1000 kg of woven goods.
- the webware is again fed to the desizing process described above.
- Polyvinyl alcohol / carboxymethyl cellulose 50% by weight of the woven goods consist of warp material. The goods are impregnated with water and 55 seconds one
- Microwave unit with 800 watts / 100 cm "2 heating power exposed. Then the goods are squeezed out and the size concentration in the regenerate by means of Refractometer determined.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4303920 | 1993-02-10 | ||
DE4303920A DE4303920C2 (en) | 1993-02-10 | 1993-02-10 | Process for desizing textile goods loaded with water-soluble size |
PCT/EP1994/000265 WO1994018374A1 (en) | 1993-02-10 | 1994-01-31 | Process for desizing sized textile materials |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0683829A1 true EP0683829A1 (en) | 1995-11-29 |
EP0683829B1 EP0683829B1 (en) | 1997-08-06 |
Family
ID=6480100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94906178A Expired - Lifetime EP0683829B1 (en) | 1993-02-10 | 1994-01-31 | Process for desizing sized textile materials |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0683829B1 (en) |
AT (1) | ATE156535T1 (en) |
AU (1) | AU683042B2 (en) |
DE (2) | DE4303920C2 (en) |
WO (1) | WO1994018374A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19536355C2 (en) * | 1995-09-29 | 1998-09-10 | Kleinewefers Ramisch Gmbh | Method and device for the continuous treatment of a textile material web |
US5980582A (en) * | 1997-11-14 | 1999-11-09 | Kleinewefers Textilmaschinen Gmbh | Method and apparatus for continuously treating a web of fabric |
GB0116122D0 (en) * | 2001-07-02 | 2001-08-22 | Milner Alan J | Production of solutions of biosolid useful for agricultural recycling from textile efflucent |
DE10303328B4 (en) * | 2003-01-28 | 2007-04-26 | A. Monforts Textilmaschinen Gmbh & Co.Kg | Process for continuous enzymatic desizing |
CN117265807A (en) * | 2022-10-28 | 2023-12-22 | 江苏晟宏生态纺织科技有限公司 | Circulated textile size desizing processor |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1635101B2 (en) * | 1966-10-18 | 1976-06-10 | Vepa Ag, Riehen Bei Basel (Schweiz) | DEVICE FOR CONTINUOUS BLEACHING, COLORING OR DESIZING OF TEXTILE GOODS |
DE1760577A1 (en) * | 1968-06-06 | 1971-12-16 | Kleinewefers Soehne J | Process for chemical finishing of textile fibers by means of high frequency heat |
DE2543815C3 (en) * | 1975-10-01 | 1980-08-21 | Basf Ag, 6700 Ludwigshafen | Process for desizing fabrics |
DE2808920A1 (en) * | 1978-03-02 | 1979-09-13 | Hoechst Ag | Water-soluble sizing removal - uses measured volume of water on fabric to improve size recovery rate |
DE2937002C2 (en) * | 1979-09-13 | 1982-04-01 | Basf Ag, 6700 Ludwigshafen | Process for desizing web-shaped fabric |
JPS5953940B2 (en) * | 1980-04-01 | 1984-12-27 | 株式会社山東鉄工所 | Continuous cleaning method for textiles |
US4426203A (en) * | 1981-01-06 | 1984-01-17 | Ciba-Geigy Corporation | Stable anhydrous textile assistant |
DE3703049A1 (en) * | 1987-02-03 | 1988-08-11 | Wfk Testgewebe Gmbh | Method of bleaching as well as device for implementing the method |
EP0295205A1 (en) * | 1987-06-05 | 1988-12-14 | Ciba-Geigy Ag | Process for pad dyeing or finishing with continuous fixation of textile materials |
DE4021479A1 (en) * | 1990-07-05 | 1992-01-16 | Babcock Textilmasch | METHOD AND DEVICE FOR IMPREGNATING RUNNING TEXTILE RAILS OR THE LIKE |
DE4128256C1 (en) * | 1991-08-27 | 1993-04-15 | H. Krantz Gmbh & Co, 5100 Aachen, De |
-
1993
- 1993-02-10 DE DE4303920A patent/DE4303920C2/en not_active Expired - Lifetime
-
1994
- 1994-01-31 EP EP94906178A patent/EP0683829B1/en not_active Expired - Lifetime
- 1994-01-31 AT AT94906178T patent/ATE156535T1/en not_active IP Right Cessation
- 1994-01-31 WO PCT/EP1994/000265 patent/WO1994018374A1/en active IP Right Grant
- 1994-01-31 DE DE59403656T patent/DE59403656D1/en not_active Expired - Fee Related
- 1994-01-31 AU AU60001/94A patent/AU683042B2/en not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO9418374A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0683829B1 (en) | 1997-08-06 |
AU6000194A (en) | 1994-08-29 |
DE4303920A1 (en) | 1994-11-10 |
AU683042B2 (en) | 1997-10-30 |
ATE156535T1 (en) | 1997-08-15 |
DE4303920C2 (en) | 1998-04-30 |
WO1994018374A1 (en) | 1994-08-18 |
DE59403656D1 (en) | 1997-09-11 |
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