WO2017157654A1 - Procédé de lavage de tissus - Google Patents

Procédé de lavage de tissus Download PDF

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Publication number
WO2017157654A1
WO2017157654A1 PCT/EP2017/054655 EP2017054655W WO2017157654A1 WO 2017157654 A1 WO2017157654 A1 WO 2017157654A1 EP 2017054655 W EP2017054655 W EP 2017054655W WO 2017157654 A1 WO2017157654 A1 WO 2017157654A1
Authority
WO
WIPO (PCT)
Prior art keywords
washing
fabric
carbon dioxide
provides
treatment
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.)
Ceased
Application number
PCT/EP2017/054655
Other languages
English (en)
Inventor
Bruno Scortegagna
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lafer SpA
Original Assignee
Lafer SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lafer SpA filed Critical Lafer SpA
Priority to EP17709609.6A priority Critical patent/EP3430191B1/fr
Publication of WO2017157654A1 publication Critical patent/WO2017157654A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06G—MECHANICAL OR PRESSURE CLEANING OF CARPETS, RUGS, SACKS, HIDES, OR OTHER SKIN OR TEXTILE ARTICLES OR FABRICS; TURNING INSIDE-OUT FLEXIBLE TUBULAR OR OTHER HOLLOW ARTICLES
    • D06G1/00—Beating, brushing, or otherwise mechanically cleaning or pressure cleaning carpets, rugs, sacks, hides, or other skin or textile articles or fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • B08B3/123—Cleaning travelling work, e.g. webs, articles on a conveyor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/0021—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by liquid gases or supercritical fluids
    • 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
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • 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
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/14—Containers, e.g. vats
    • D06B23/16—Containers, e.g. vats with means for introducing or removing textile materials without modifying container pressure
    • 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
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D06B3/12—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics in zig-zag manner over series of guiding means
    • 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
    • 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
    • D06L1/18—Working under pressure in closed vessels
    • 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
    • D06B13/00—Treatment of textile materials with liquids, gases or vapours with aid of vibration
    • 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
    • D06B9/00—Solvent-treatment of textile materials
    • D06B9/06—Solvent-treatment of textile materials with recovery of the solvent
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
    • D06F43/007—Dry cleaning methods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Definitions

  • the present invention concerns a process for washing fabrics usable in the industrial field of the production of textile products, whether they are made by textile fibers of the animal, vegetable, artificial or synthetic type, or mixed.
  • the invention concerns a washing process that uses carbon dioxide as its main washing fluid.
  • washing processes normally use solvents or hydrocarbons and/or water solutions containing particular soap substances, detergents, wetting agents or suchlike.
  • chloride and fluoride solvents are generally used, such as perchloroethylene (C 2 C1 4 ), which are currently recognized as particularly harmful for users and for the environment, and therefore the residual sludges containing oils, fats and traces of perc must be disposed of as dangerous waste.
  • the fabrics obtained by washing processes that use solvents and detergents can also be harmful and noxious for those who suffer from allergies or asthma, due to the traces of solvents or detergents that can remain in the fabrics themselves.
  • Liquid carbon dioxide has a considerable solvent power in particular for non- polar substances that allow it to pass through the limit layer of the surfaces of the fibers to be treated.
  • Carbon dioxide is a substance that can easily be found on the market and is inexpensive, because it is a residue of other production processes from which it can be suitably worked and re-used.
  • CO 2 In its liquid state CO 2 has quite limited values of surface tension and viscosity, which make liquid CO 2 an optimum wetting agent, able to remove even very viscous liquids from in depth, such as mineral oils with a complex composition, fluid oils of a hydrocarbon nature or paraffins.
  • Carbon dioxide has solvent potentiality in each of its physical states.
  • Washing processes with CO 2 used in the state of the art generally provide to treat textile garments and/or articles by immersing them in a bath of liquid carbon dioxide, inside a pressurized treatment chamber, with a pressure of more than 5.2 bar. Washing processes of a known type generally operate at pressures of around 50 bar.
  • the articles/garments are inserted in an apparatus provided with a rack that rotates inside a drum, as in traditional washing machines.
  • Washing processes that use a rotating rack consume a lot of energy to make the rack rotate, due to the weight and inertia of the rack itself and also of the textile material immersed in the bath inside it.
  • Another disadvantage is that, in known washing processes, the washing treatment is not carried out continuously on the fabric.
  • Another disadvantage is that the carbon dioxide used during the washing process is filtered and regenerated discontinuously.
  • one purpose of the present invention is to provide a process for washing fabrics with carbon dioxide which allows to wash the fabrics uniformly, removing from them oils, fats and/or organic and inorganic contaminants.
  • Another purpose of the present invention is to perfect a washing process that allows to carry out the washing of the fabrics semi-continuously.
  • Another purpose is to provide a washing process that allows to continuously recirculate and regenerate the carbon dioxide used for washing.
  • Another purpose is to provide a washing process that allows to eliminate any type of additive.
  • Another purpose is to obtain the resultant residual sludges containing oils, fats, etc., without contaminating substances like solvents, detergents, surfactants etc., so that they can be disposed of as non-toxic and non-noxious waste.
  • Another purpose is to provide a washing process that has a low environmental impact and is not polluting, but at the same time is efficient and allows to obtain great cleanliness of the fabrics.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • a process for washing fabrics according to the present invention comprises the following main steps:
  • the washing process also comprises:
  • fabrics here and hereafter in the description we mean fabrics generally consisting of textile fibers of the animal, vegetable, artificial or synthetic type, and/or mixed.
  • the fabrics can also be open fabrics, tubular fabrics, or fabrics folded over on themselves longitudinally and sewn.
  • the treatment chamber is pressurized to pressures of more than 5.2 bar.
  • the process provides to wash the fabric while it is unwound from and wound onto respective winding/unwinding rolls disposed inside the pressurized treatment chamber.
  • the process provides to insert the fabric to be washed on at least a first winding/un winding roll, to unwind the fabric from said roll, to carry out the washing treatment while the fabric is being unwound, and to wind the washed fabric onto a second winding/unwinding roll.
  • the washing treatment is carried out continuously during the unwinding/winding of the fabric.
  • the washing process provides to deliver carbon dioxide in a super-cooled liquid form, or alternatively in a two-phase mixture (liquid-steam), onto the fabric during the winding/unwinding thereof by means of suitable delivery means disposed at least along the travel of the fabric between the first unwinding roll and the second winding roll.
  • the washing process also provides to immerse the fabric in a bath of liquid carbon dioxide during its transit from the first unwinding roll to the second winding roll.
  • the process can provide at least one second washing pass with the fabric unwound from the second roll and re-wound onto the first roll.
  • This process which uses liquid carbon dioxide, is particularly effective for removing oils and fats present in depth and on the surface of the fabric, in particular in a treatment condition inside a pressurized chamber.
  • liquid carbon dioxide has limited values of surface tension and viscosity, which give it a high solvent power especially for low-polar or non- polar pollutant substances or compounds, like oils and fatty substances.
  • Low surface tension and low viscosity allow the liquid carbon dioxide to remove even very viscous liquids in depth, such as mineral oils with complex composition, fluid oils of a hydrocarbon nature and/or paraffins.
  • the washing process provides to deliver carbon dioxide in a gaseous form onto the fabric immersed in the liquid carbon dioxide, for example by means of cavitating delivery nozzles or other delivery means.
  • the carbon dioxide in a gaseous form can be delivered in the form of saturated steam which, introduced into the super-cooled liquid carbon dioxide, causes the phenomenon of cavitation.
  • the bubbles of saturated steam cool quickly and collapse violently, generating impact waves at high temperature and pressure which impact against the fabric to be washed, thus facilitating the removal of dirt.
  • the washing process in order to generate a similar effect to that of cavitation, provides to use ultrasounds to increase the washing efficacy of the fabric immersed in the bath of liquid carbon dioxide.
  • the washing process provides to heat the fabric before it is wound onto one of the winding/unwinding rolls at the end of a washing treatment to render gaseous the carbon dioxide retained in the fabric and to remove it therefrom.
  • the washing process also provides to recirculate and regenerate the gaseous and/or liquid carbon dioxide used during the washing treatment, to allow subsequent use and limit consumption thereof.
  • - fig. 1 is a schematic representation of a washing apparatus in which a washing process according to embodiments described here can be carried out;
  • - fig. 2 is a block diagram of a process for washing fabrics according to embodiments described here;
  • FIG. 3 is a block diagram of a process for washing fabrics according to embodiments described here. To facilitate comprehension, the same reference numbers have been used, where possible, to identify identical common elements in the drawings. It is understood that elements and characteristics of one embodiment can conveniently be incorporated into other embodiments without further clarifications.
  • the process for washing fabrics according to the present invention can be carried out, by way of non-restrictive example, in a washing apparatus 10 according to embodiments described using fig. 1.
  • the washing process according to the present invention provides to insert a fabric 12 to be washed in a treatment chamber 14, inside which a desired pressure is created, and to perform a washing treatment on the fabric 12 using carbon dioxide as washing fluid.
  • the pressure inside the treatment chamber 14 can vary between about 10 bar and about 60 bar.
  • the process provides to insert the fabric 12 on at least two winding/unwinding rolls 16 before the start of the washing treatment.
  • the fabric 12 to be washed is mounted on a first unwinding roll 16 and drawn in on a second winding roll 16.
  • the washing treatment provides to carry out at least one washing cycle, defined by the complete winding/unwinding of the fabric 12 from one winding/unwinding roll 16 to the other.
  • the number of washing cycles, or number of times in which a fabric 12 is unwound/wound on the respective winding/un winding rolls 16, can be chosen as a function of the type of fabric 12 and/or the type of pollutants that are to be removed.
  • the process can provide to keep the fabric 12 taut between one winding/unwinding roll 16 and the other by means of one or more return rolls 18 configured to define a path for the fabric 12 inside the treatment chamber 14.
  • the washing process provides to deliver carbon dioxide in liquid form by means of first delivery nozzles 20 onto the fabric 12 during its winding/unwinding.
  • the delivery nozzles 20 can deliver super- cooled liquid carbon dioxide, or alternatively in the form of a two-phase mixture of liquid and steam, or under saturation conditions.
  • the washing process can also provide to beat the fabric 12 in the segment of travel between the two winding/unwinding rolls 16, creating a mechanical beating action by suitable beating rolls, not shown, or other suitable means to increase the movement of the fabric 12 and hence to further promote the removal of the pollutant substances.
  • the washing process provides to make the fabric 12 transit in a bath of liquid carbon dioxide 22 during its passage from one winding/unwinding roll 16 to the other.
  • the washing process provides to deliver carbon dioxide in gaseous form by means of second delivery nozzles 24 onto the segment of fabric 12 immersed in the bath of liquid carbon dioxide 22.
  • the bubbles of vapor of carbon dioxide introduced under the free surface of a bath of super-cooled liquid carbon dioxide 22 quickly cool and collapse. These conditions determine the phenomenon of cavitation and part of the energy generated by the collapse of the bubbles is transformed into impact waves which, impacting against the fabric 12, create a beating effect on it which promotes the removal of the dirt and fatty substances.
  • the washing process can provide to make the fabric 12 transit in the bath of liquid carbon dioxide 22 two or more times in succession, to promote the removal of the fatty substances present on the fabric 12 that bond with the molecules of liquid carbon dioxide.
  • the fabric 12 can be made to transit inside and outside the bath of liquid carbon dioxide 22 using one or more return rolls 18 suitably positioned.
  • the washing process can provide to squeeze and/or wring the fabric 12 at exit from the bath of liquid carbon dioxide 22 before immersing it into the bath again.
  • the process can provide to squeeze and/or wring the fabric 12 by means of squeezer rolls 26 that cooperate with one or more return rolls 18.
  • one step of the process can provide to squeeze, with a squeezer roll 26, the fabric 12 in transit against a respective return roll 18.
  • the process for washing fabrics can provide to heat the fabric 12 before winding it onto one of the winding/unwinding rolls 16 at the end of the washing treatment to make the carbon dioxide retained in the fabric 12 gaseous and remove it therefrom.
  • the fabric 12 can be heated by making it transit in contact with a heated roll 28.
  • the washing process can be carried out at washing temperatures comprised between about -40°C and about 25°C.
  • carbon dioxide has optimal anti-bacterial properties, so that it guarantees a deep cleaning and bactericide action even at low temperatures, making the fabrics 12 particularly suitable for those suffering from allergies or asthma.
  • the process for washing fabrics also provides to continuously recirculate and regenerate the gaseous and/or liquid carbon dioxide used in the treatment chamber 14 during each washing cycle by means of a recirculation circuit 30.
  • the liquid carbon dioxide can be continuously super-cooled and/or kept at the specific temperature at which the process is to be carried out, for example using super-cooling and/or heating devices, not shown.
  • the super-cooling device for example, can cool the carbon dioxide to a temperature of about -40°C, so as to keep it at a state of super-cooled liquid.
  • the liquid carbon dioxide used in the treatment chamber 14 can be filtered continuously during the washing cycle to eliminate impurities and pollutant substances collected in it.
  • the liquid carbon dioxide can be extracted from the treatment chamber 14 to be cleaned of the non-polar substances removed during the washing cycle, such as for example oils, fatty substances and paraffins.
  • the liquid carbon dioxide can be cleaned and regenerated by ultra-filtering.
  • the liquid carbon dioxide can be cleaned and regenerated, in combination with or alternatively to ultra-filtering, using other membrane technologies such as for example micro-filtering, nano-filtering or inverse osmosis.
  • the regenerated liquid carbon dioxide can be fed again inside the treatment chamber 14, in the bath of liquid carbon dioxide 22, or delivered by the first delivery nozzles 20, while the liquid carbon dioxide still bonded with the pollutant substances can be cleaned and regenerated by distillation.
  • the carbon dioxide is made gaseous so as to separate from it the pollutant substances, which can then be eliminated by a suitable removal circuit.
  • the gaseous carbon dioxide can then be recondensed by a condenser 32 and stored in a suitable accumulation tank 34.
  • the liquid carbon dioxide containing the pollutant substances can be distilled without using ultra-filtering.
  • the gaseous carbon dioxide can be removed from the treatment chamber 14 by a compressor device, not shown.
  • the gaseous carbon dioxide can be subsequently sent to a condenser 32 and then stored in the accumulation tank 34.
  • the process can provide to aspirate the gaseous carbon dioxide until the treatment chamber 14 has reached a low enough pressure, near values lower than -0.9 bar.
  • the process provides to restore the atmospheric pressure inside the treatment chamber 14, and then to open the treatment chamber 14 to remove the treated fabric 12 and reinsert a new fabric to be treated.
  • two or more treatment chambers 14 can be provided, operating alternately or simultaneously, at least for part of the process, so as to increase productivity and reduce to a minimum the downtimes between one washing treatment and the next.
  • the two or more treatment chambers 14 can share the feed circuit and/or the recirculation circuit 30 of the carbon dioxide.
  • At least partly different treatments can also be provided between the two or more different treatment chambers 14, according to the washing cycle provided and the operating parameters of the treatment.
  • the plant can provide another second treatment chamber 14 which can wash a fabric in concomitance with the unloading and subsequent reloading of the fabric 12 on the first treatment chamber 14, using the same recovery and recirculation circuit 30 of the carbon dioxide.
  • a fabric 12 to be washed can be wound on a first group of rolls 16, 18, 20 outside the first treatment chamber 14 while in the second treatment chamber 14 the washing treatment is carried out on a fabric 12 wound on a second group of rolls 16, 18, 20.
  • the washed fabric 12 can be removed from the second treatment chamber 14 and replaced, and washing can proceed in the first treatment chamber 14 preloaded during the washing in the second treatment chamber 14 that uses the second group of rolls 16, 18, 20, allowing to carry out a substantially continuous washing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

L'invention concerne un procédé de lavage de tissus comprenant les étapes consistant à : introduire un tissu (12) à laver dans une chambre de traitement (14), créer une pression souhaitée à l'intérieur de la chambre de traitement (14), effectuer un traitement de lavage sur le tissu (12) en utilisant du dioxyde de carbone (CO2) comme fluide de lavage, et restaurer la pression atmosphérique dans la chambre de traitement (14).
PCT/EP2017/054655 2016-03-15 2017-02-28 Procédé de lavage de tissus Ceased WO2017157654A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17709609.6A EP3430191B1 (fr) 2016-03-15 2017-02-28 Procédé de lavage de tissus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUA2016A001694A ITUA20161694A1 (it) 2016-03-15 2016-03-15 Processo di lavaggio tessuti
IT102016000027145 2016-03-15

Publications (1)

Publication Number Publication Date
WO2017157654A1 true WO2017157654A1 (fr) 2017-09-21

Family

ID=56203728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/054655 Ceased WO2017157654A1 (fr) 2016-03-15 2017-02-28 Procédé de lavage de tissus

Country Status (2)

Country Link
IT (1) ITUA20161694A1 (fr)
WO (1) WO2017157654A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904514A1 (de) * 1989-02-15 1990-08-23 Oeffentliche Pruefstelle Und T Verfahren zum reinigen bzw. waschen von bekleidungsteilen o. dgl.
US6270844B2 (en) * 1997-05-30 2001-08-07 Micell Technologies, Inc. Method of impregnating a porous polymer substrate
JP2010180385A (ja) * 2009-02-09 2010-08-19 Kobe Steel Ltd 連続高圧処理方法および連続高圧処理装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904514A1 (de) * 1989-02-15 1990-08-23 Oeffentliche Pruefstelle Und T Verfahren zum reinigen bzw. waschen von bekleidungsteilen o. dgl.
US6270844B2 (en) * 1997-05-30 2001-08-07 Micell Technologies, Inc. Method of impregnating a porous polymer substrate
JP2010180385A (ja) * 2009-02-09 2010-08-19 Kobe Steel Ltd 連続高圧処理方法および連続高圧処理装置

Also Published As

Publication number Publication date
ITUA20161694A1 (it) 2017-09-15

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