ITBA20090035A1 - CLEANING OF POLYESTER, ACETATE FABRICS AND RELATED MIXTURES BY PLASMOCHEMICAL PROCESSES. - Google Patents
CLEANING OF POLYESTER, ACETATE FABRICS AND RELATED MIXTURES BY PLASMOCHEMICAL PROCESSES. Download PDFInfo
- Publication number
- ITBA20090035A1 ITBA20090035A1 IT000035A ITBA20090035A ITBA20090035A1 IT BA20090035 A1 ITBA20090035 A1 IT BA20090035A1 IT 000035 A IT000035 A IT 000035A IT BA20090035 A ITBA20090035 A IT BA20090035A IT BA20090035 A1 ITBA20090035 A1 IT BA20090035A1
- Authority
- IT
- Italy
- Prior art keywords
- point
- fabrics
- process described
- polyester
- fibers
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 28
- 239000004744 fabric Substances 0.000 title claims description 26
- 239000000203 mixture Substances 0.000 title claims description 9
- 229920000728 polyester Polymers 0.000 title claims description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 title 1
- 238000004140 cleaning Methods 0.000 title 1
- 239000007789 gas Substances 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 4
- 239000000975 dye Substances 0.000 claims 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims 2
- 229910052757 nitrogen Inorganic materials 0.000 claims 2
- 229920001707 polybutylene terephthalate Polymers 0.000 claims 2
- -1 polyethylene terephthalate Polymers 0.000 claims 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims 2
- 210000002268 wool Anatomy 0.000 claims 2
- 229920000742 Cotton Polymers 0.000 claims 1
- 229920000297 Rayon Polymers 0.000 claims 1
- 150000001242 acetic acid derivatives Chemical class 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 125000002091 cationic group Chemical group 0.000 claims 1
- 239000001307 helium Substances 0.000 claims 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 239000004745 nonwoven fabric Substances 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 238000009832 plasma treatment Methods 0.000 claims 1
- 230000005684 electric field Effects 0.000 description 6
- 238000005086 pumping Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 241001584775 Tunga penetrans Species 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
- D06P5/2011—Application of vibrations, pulses or waves for non-thermic purposes
Description
[03] DESCRIZIONE DELL’INVENZIONE [03] DESCRIPTION OF THE INVENTION
[0301] Per ridurre al massimo l’impatto ambientale, migliorando nell contempo l’economia di processo, è possibile effettuare la pulitura del PET in un reattore plasmo -chimico alimentato con varie miscele di gas in grado di generare, in fase plasma, specie attive che reagiscano con il colorante in eccesso presente all’esterno della fibra di poliestere dando come prodotti composti volatili e non, comunque non colorati. [0301] To minimize the environmental impact, while improving the economy of the process, it is possible to clean the PET in a plasma-chemical reactor fed with various gas mixtures capable of generating, in the plasma phase, especially active substances that react with the excess dye present on the outside of the polyester fiber giving as products volatile and non-colored compounds, in any case not colored.
[0302] Detto plasma è generato applicando opportunamente un campo elettrico ad alta frequenza (KHz-MHz) tra gli elettrodi del reattore, attraverso i quali siano fatto passare il tessuto e il gas di alimentazione del plasma ad un flusso e una pressione opportuni, eventualmente in miscela con gas inerte (baffer) per migliorare l’uniformità del processo. [0302] Said plasma is generated by suitably applying a high frequency electric field (KHz-MHz) between the reactor electrodes, through which the tissue and the plasma supply gas are made to pass at a suitable flow and pressure, possibly mixed with inert gas (baffer) to improve the uniformity of the process.
[0303] Nel caso della presente invenzione è stato usato un reattore roll-to-roll a piatti piani paralleli, schematizzato in Figura 1. [0303] In the case of the present invention a roll-to-roll reactor with parallel flat plates was used, schematized in Figure 1.
Figura 1. Schema semplificato di un reattore plasmo chimico per il trattamento di tessuti in bobina: A) camere di svolgimento/awolgimento del tessuto, B) camera di processo; C) rulli di svolgimento/avvolgimento; D) tessuto; E) elettrodi. Figure 1. Simplified diagram of a chemical plasma reactor for the treatment of fabrics in reels: A) fabric unwinding / winding chambers, B) processing chamber; C) unwinding / winding rollers; D) fabric; E) electrodes.
[0304]I1 reattore è strutturalmente simile ad unjigger ad alta pressióne, macchina questa già ampiamente utilizzata per la tintura dei tessuti di poliestere. Le camere e B sono a tenuta, ossia non è possibile la diffusione di gas dall’esterno all’interno, cosi come dall’ interno all’esterno se non attraverso le tubazioni predisposte per lo scopo e opportunamente comandate da valvole. Le camere sono anche collegate ad un sistema di misura della pressione, che viene controllata prima, durante e dopo l’intero processo, e ad un sistema di pompaggio per mantenere la pressione ottimizzata, e per ridurre al minimo le contaminazioni prima, durante e dopo il processo. In un tipico processo l’intero sistema è evacuato fino alla pressione di base di pochi millitorr prima di immettere il gas di processo. [0304] The reactor is structurally similar to a high pressure unjigger, this machine already widely used for dyeing polyester fabrics. The chambers and B are sealed, that is, it is not possible to diffuse gas from the outside to the inside, as well as from the inside to the outside except through the pipes prepared for the purpose and suitably controlled by valves. The chambers are also connected to a pressure measuring system, which is checked before, during and after the entire process, and to a pumping system to maintain optimized pressure, and to minimize contamination before, during and after. the process. In a typical process, the entire system is evacuated to a base pressure of a few millitorrs before introducing the process gas.
[0305]La miscela gassosa viene immessa nel reattore attraverso opportuni diffusori dalle pareti delle camere e/o dagli elettrodi, composizione, flusso e pressione del gas sono controllati con valvole e flussimetri di regolazione, in maniera da garantire un afflusso costante e omogeneo di specie attive al substrato da trattare durante il processo. [0305] The gaseous mixture is introduced into the reactor through suitable diffusers from the walls of the chambers and / or from the electrodes, composition, flow and pressure of the gas are controlled with regulating valves and flowmeters, so as to ensure a constant and homogeneous flow of species active to the substrate to be treated during the process.
[0306]I1 controllo della velocità di scorrimento e della tensione del tessuto sui due rulli svolgitori/avvolgitori C è sostanzialmente identico a quello di : un tradizionale jigger, opportunamente adattato alla tipologia di tessuto da trattare. I motori per il controllo dei movimenti possono essere comandati da inverter o da motori del tipo “passo passo” per una precisa regolazione degli stessi, consentendo così la riduzione delle tensioni meccaniche trasmesse al tessuto. [0306] The control of the sliding speed and of the tension of the fabric on the two unwinding / winding rollers C is substantially identical to that of: a traditional jigger, suitably adapted to the type of fabric to be treated. The motors for the control of the movements can be controlled by inverters or by "step by step" motors for a precise regulation of the same, thus allowing the reduction of the mechanical tensions transmitted to the fabric.
[0307]Durante il processo il tessuto si svolge dal primo rullo, passa attraverso il plasma, e poi viene riavvolto sul secondo rullo, controllato da opportuni dispositivi. I processi possono essere effettuati passando più volte il tessuto nel plasma alternando il senso dì svolgimento/ del tessuto, fino a completa distruzione del colorante presente sulla superficie. Nel caso si tratti tessuti elasticizzati, ossia contenenti fibre elastomeriche, o tessuti a maglia aventi struttura di per sé facilmente deformabile, particolare attenzione deve essere posta alla movimentazione del tessuto all’interno della macchina, ed alle tensioni trasmesse al tessuto dai rulli C. A tal fine il dispositivo di controllo dello svolgimento deve essere costituito da cilindri ballerini, eventualmente integrati con celle di carico o altri dispositivi tali da assicurare in controllo costante degli sforzi trasmessi attraverso il tessuto. [0307] During the process the fabric unwinds from the first roller, passes through the plasma, and is then rewound onto the second roller, controlled by suitable devices. The processes can be carried out by passing the tissue several times in the plasma, alternating the direction of development / of the tissue, until the dye present on the surface is completely destroyed. In the case of stretch fabrics, i.e. containing elastomeric fibers, or knitted fabrics having an easily deformable structure, particular attention must be paid to the movement of the fabric inside the machine, and to the tensions transmitted to the fabric by the rollers C. A for this purpose, the unwinding control device must consist of dancing cylinders, possibly integrated with load cells or other devices such as to ensure constant control of the forces transmitted through the fabric.
[Q3Q8]I1 plasma è innescato tra gli elettrodi E, posizionati tra di loro; e rispetto al tessuto alla distanza ottimizzata in funzione degli altri parametri di processo (pressione, flusso e composizione del gas, frequenza e potenza del campo elettrico applicato, ecc.). La distanza tra gli elettrodi può essere variata tra alcuni centimetri e pochi millimetri. Uno o entrambi gli elettrodi sono opportunamente collegati ad un generatore di campo elettrico ad alta frequenza (KHz-MHz); uno o entrambi gli elettrodi possono essere rivestiti di materiale dielettrico. Durante il processo il campo elettrico è innescato a potenza costante o modulata secondo una periodicità ottimizzata. Tutto il processo può essere condotto in modo automatizzato, controllato da computer. [Q3Q8] The plasma is triggered between the electrodes E, positioned between them; and with respect to the tissue at the distance optimized as a function of the other process parameters (pressure, flow and composition of the gas, frequency and power of the applied electric field, etc.). The distance between the electrodes can be varied between a few centimeters and a few millimeters. One or both electrodes are suitably connected to a high frequency (KHz-MHz) electric field generator; one or both electrodes may be coated with dielectric material. During the process the electric field is triggered at constant or modulated power according to an optimized periodicity. The whole process can be carried out in an automated, computer-controlled way.
[0309] All’ uscita del sistema di pompaggio il gas proveniente dal processo, che può contenere composti organici volatili derivanti dalla trasformazione dei composti presenti sulla superficie della fibra, può essere filtrato su carboni attivi o su altro dispositivo in grado di rimuovere detti composti organici. [0309] At the outlet of the pumping system, the gas coming from the process, which may contain volatile organic compounds deriving from the transformation of the compounds present on the surface of the fiber, can be filtered on activated carbon or other device capable of removing said organic compounds .
[0310]Un tipico processo di rimozione del colorante in eccesso su tessuto tinto avverrà secondo le seguenti modalità: [0310] A typical process of removing excess dye on dyed fabric will take place in the following ways:
- caricamento del tessuto - fabric loading
La bobina di tessuto viene caricata sul rullo di svolgimento attraverso apposita apertura , il tessuto viene svolto e fatto passare nella camera di processo, di qui nella carniera di svolgimento, e qui ancorata al rullo di riavvolgimento. Si 1 provvede alla chiusura della macchina e, in automatico previo consenso, la camera viene portata al vuoto richiesto prima del processo. The reel of fabric is loaded onto the unwinding roller through a special opening, the fabric is unwound and passed into the processing chamber, from here into the unwinding game bag, and here anchored to the rewinding roller. Si 1 closes the machine and, automatically with consent, the chamber is brought to the required vacuum before the process.
- trattamento plasmochimico - plasmochemical treatment
Raggiunto il vuoto richiesto, nella camera di processo viene immessa la miscela di alimentazione ai valori di composizione, flusso, e pressione richiesti. Raggiunti questi valori ottimali viene acceso il plasma tra i due elettrodi del reattore alla potenza ottimizzata, e si avvia la movimentazione del tessuto alla velocità di svolgimento ottimizzata. Once the required vacuum is reached, the feed mixture is introduced into the process chamber at the required composition, flow and pressure values. Once these optimal values have been reached, the plasma between the two reactor electrodes is ignited at the optimized power, and the tissue movement is started at the optimized unwinding speed.
- “ventina” e rimozione del tessuto trattato - "twenty" and removal of the treated tissue
Al termine del processo si spegne il plasma e si lascia acceso il sistema di pompaggio in maniera da aspirare i gas/vapori residui del processo dalla fibra. In seguito viene immessa aria (ventmg) nel sistema, per riportare le camere a pressione atmosferica, ed estrarre la bobina trattata dalla camera di riavvolgimento. At the end of the process the plasma is switched off and the pumping system is left on in order to suck the residual gases / vapors of the process from the fiber. Then air (ventmg) is introduced into the system, to bring the chambers back to atmospheric pressure, and extract the treated reel from the rewinding chamber.
[0311 ] Avvenendo i processi via plasma a secco, senza solventi, al termine del processo non è necessario alcun asciugamento, azzerando quindi il rischio di far diffondere altro colorante sulla superficie della fibra e i costi energetici connessi all’operazione di asciugatura. [0311] As the processes take place via dry plasma, without solvents, at the end of the process no drying is necessary, thus eliminating the risk of spreading more dye on the surface of the fiber and the energy costs associated with the drying operation.
[0312]I1 controllo dell’awenuta rimozione del colorante in eccesso può essere effettuato effettuando su ritagli di tessuto la prova per la valutazione della solidità della tinta al lavaggio a 40°C, all’acqua e/o al sudore. [0312] The control of the removal of excess dye can be carried out by carrying out the test on scraps of fabric to evaluate the solidity of the dye to washing at 40 ° C, to water and / or sweat.
[0313]La rimozione plasmocimica del colorante in eccesso su PET può essere effettuata con i seguenti parametri sperimentali: [0313] Plasma removal of excess dye on PET can be performed with the following experimental parameters:
Substrato: PET stampato di vari colori Substrate: PET printed in various colors
Velocità di svolgimento del tessuto: 0 - 20 m/min Fabric unwinding speed: 0 - 20 m / min
Pressione di base: < 10 mtorr Base pressure: <10 mtorr
Pressione di lavoro: tra 10 mtorr e 50 torr (bassa pressione), tra 50 torr e 5 atm (alta pressione) Gas di alimentazione: H2, H20 vapore, H202vapore, aria, 02, N20, N2, da soli o in miscela. Working pressure: between 10 mtorr and 50 torr (low pressure), between 50 torr and 5 atm (high pressure) Supply gas: H2, H20 steam, H202 steam, air, 02, N20, N2, alone or in mixture.
Gas buffer (eventualmente da aggiungere al gas di alimentazione). N2, Ar,He, e altn gas nobili Frequenza del campo elettrico: 10 KHz - 900 MHz (a bassa pressione); .1-150 KHz (ad alta pressione) Gas buffer (possibly to be added to the supply gas). N2, Ar, He, and other noble gases Electric field frequency: 10 KHz - 900 MHz (low pressure); .1-150KHz (high pressure)
Potenza del campo elettrico: 0.01 - 20 W/cm<2>, Electric field power: 0.01 - 20 W / cm <2>,
Flusso totale gas: 0.1-1000 sml/min (bassa pressione); 0.5-20 sl/min (alta pressione) Total gas flow: 0.1-1000 sml / min (low pressure); 0.5-20 sl / min (high pressure)
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000035A ITBA20090035A1 (en) | 2009-09-03 | 2009-09-03 | CLEANING OF POLYESTER, ACETATE FABRICS AND RELATED MIXTURES BY PLASMOCHEMICAL PROCESSES. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000035A ITBA20090035A1 (en) | 2009-09-03 | 2009-09-03 | CLEANING OF POLYESTER, ACETATE FABRICS AND RELATED MIXTURES BY PLASMOCHEMICAL PROCESSES. |
Publications (1)
Publication Number | Publication Date |
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ITBA20090035A1 true ITBA20090035A1 (en) | 2011-03-04 |
Family
ID=42101606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT000035A ITBA20090035A1 (en) | 2009-09-03 | 2009-09-03 | CLEANING OF POLYESTER, ACETATE FABRICS AND RELATED MIXTURES BY PLASMOCHEMICAL PROCESSES. |
Country Status (1)
Country | Link |
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IT (1) | ITBA20090035A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58115187A (en) * | 1981-12-28 | 1983-07-08 | ユニチカ株式会社 | Enhancing of dye fastness of polyester fiber product |
JPH05295679A (en) * | 1992-04-13 | 1993-11-09 | Toray Ind Inc | Method for improving fastness of coated fabric |
KR100789291B1 (en) * | 2006-11-08 | 2007-12-28 | 배백현 | Method for removal of dye and impurities on cloth by plasma source ion implantation |
-
2009
- 2009-09-03 IT IT000035A patent/ITBA20090035A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58115187A (en) * | 1981-12-28 | 1983-07-08 | ユニチカ株式会社 | Enhancing of dye fastness of polyester fiber product |
JPH05295679A (en) * | 1992-04-13 | 1993-11-09 | Toray Ind Inc | Method for improving fastness of coated fabric |
KR100789291B1 (en) * | 2006-11-08 | 2007-12-28 | 배백현 | Method for removal of dye and impurities on cloth by plasma source ion implantation |
Non-Patent Citations (1)
Title |
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DATABASE WPI Week 198333, Derwent World Patents Index; AN 1983-738063, XP002578480 * |
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