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
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/38—Products with no well-defined composition, e.g. natural products
  • C11D3/382—Vegetable products, e.g. soya meal, wood flour, sawdust
• • 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
• • 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

Definitions

• the present invention relates to the field of dry cleaning of textiles and leather goods.
• Dry cleaning makes it possible to maintain textiles (clothing and furnishing fabrics) which cannot withstand washing with water. This is the case with leather, thick, fluffy or easily wrinkled fabrics such as coats, pants, suits; certain skins; woolly textiles that can felt; certain categories of clothing and furnishings, with fragile seams and moving fuses, according to the care label. This activity is carried out by professionals, under very precise regulatory technical conditions and complying with a certain number of obligations towards the consumer.
• Dry cleaning professionals have efficient machines in which a cleaning solvent circulates in a closed circuit.
• Known dry cleaning machines include an enclosure in which operates in alternating or continuous rotation, a drum containing the textile articles to be cleaned, into which said solvent is introduced.
• perchlorethylene The most widely used solvent worldwide is perchlorethylene, which has the advantage of being very effective in dissolving stains and dirt (grease) on clothing.
• perchlorethylene poses multiple problems, linked to the environment (destruction of the ozone layer, pollution of groundwater), human health (presence of carcinogens) and user safety.
• Document US 6136778 describes an aqueous detergent composition comprising one or more detergents selected from the group comprising essential oils and constituents of essential oils having been isolated from these oils or synthesized, a surfactant and an enzyme.
• the detergent composition described is intended exclusively for household use and not for dry cleaning on an industrial scale.
• the aim of the present invention is to provide an aqueous composition for dry cleaning and / or degreasing of textiles and leather goods which is natural and biodegradable, while retaining excellent cleaning properties.
• the invention relates to a dry cleaning machine which implements said method.
• the invention relates to a dry cleaning and / or degreasing process for textiles and leather goods which implements said composition.
• the object of the invention is perfectly achieved by means of the aqueous dry cleaning and / or degreasing composition of textiles and leather goods, preferably prepared from a concentrate, comprising in particular an essential oil and a surfactant, composition characterized in that it is etherisable and micronisable below 50 ⁇ m and in that the ingredients of this composition are exclusively of plant origin.
• micronizable is meant, in the context of the present invention, the property of a liquid product of being reduced to fine particles by spraying, in particular pneumatic atomization.
• pneumatic atomization is meant the spraying of a liquid by means of devices called automatic pneumatic atomizers, which mix the air and the liquid to be sprayed, to give a completely atomized jet.
• etherisable is meant, in the context of the present invention, the quality of a compound to be highly volatile. Therefore, the composition of the invention - when it is micronized - has a very high capacity for penetration into textiles and dispersion, close to that of a solvent, thus providing dry cleaning.
• composition of the invention has the following characteristics: micronizable below 50 ⁇ m (microns), high cleaning, detergent, degreasing, softening, antiseptic, regenerating and perfuming properties, adaptable to variations in temperature and pressure.
• Said composition includes extracts from plants (leaves, flowers, fruits, seeds, roots), trees (bark), legumes, cereals and marine plants.
• the composition of the invention is therefore 100% natural (no toxic effects on human health), 100% biodegradable (no harmful effects on the environment) and non-flammable (no risks for the safety of users) .
• the aqueous cleaning and / or degreasing composition of the invention comprises at least one essential oil and at least one surfactant washing agent capable of dissolving the essential oils in water.
• said essential oil is selected from the group comprising essential oils of: Cymbopogon, Mentha piperata, Eucalyptus citriodora, Eugoua, Citrus limonum.
• Said surfactant is preferably selected from the group comprising: extracts of wheat, soya, palm, coconut, copra, olive, fucus.
• said concentrate in an alternative embodiment, comprises:
• At least one detergent and emulsifier surfactant exclusively of vegetable origin, with high skin tolerance, representing 5 to 20% by weight.
• it further comprises:
• At least one additive having one or more of the following properties: humectant, antistatic, antioxidant, antibacterial, sanitizer, fluidifier, softener, swelling and preservative, representing 0.1 to 10% by weight;
• the cleaning and / or degreasing qualities of the aqueous composition are due in particular to the presence of essential oils and surfactants, the latter being capable of dissolving the essential oils in water.
• Essential oils are capable of rapidly dissolving grease and liquid or solid polymers.
• Their cleaning capacity is increased in the presence of enzymes: the emulsifying action of essential oils facilitates contact between enzymes and liquefied fats, and, by therefore, the degrading action of enzymes.
• the pH thereof In order to ensure optimal cleaning activity for the enzymes present in the cleaning composition of the invention, the pH thereof must be maintained between 6 and 8.
• the concentrate described does not contain:
• the invention relates to a dry cleaning machine for textiles and leather goods implementing said method.
• the dry cleaning machine comprises: a drum mounted in an enclosure closed by a door in a sealed manner; heating means; suction means; filtration means and control means.
• it comprises pneumatic atomization means capable of producing inside the enclosure a spraying of droplets of at most 50 ⁇ m of the aqueous composition described, for a limited period of time, at a lower temperature. or equal to 45 ° C, up to a reduced weight gain of the garment, of the order of 5 to 70%.
• the invention relates to a dry cleaning and / or degreasing process for textiles and / or leather goods using the aqueous composition described.
• this process comprises a succession of phases for brewing textiles and / or skins in an enclosure, among which one phase consists in impregnating textiles and / or skins with a reduced amount of a composition.
• aqueous by means of a pneumatic atomization of not more than 50 ⁇ m, for a limited time, at a temperature less than or equal to 45 ° C, until reduced weight gain, preferably of the order of 5 to 70%.
• the weight gain of the clothes is between 5 and 40%.
• the cleaning process of the invention falls under the category of dry cleaning, since:
• the washing composition used is an etherizable and micronizable solution with a high conductivity, close to that of a solvent;
• the weight gain of clothes during washing is limited to 70%, while in water cleaning processes, the weight of clothes increases by at least 100% during washing.
• FIG. 1 shows schematically, a cross-sectional view of the dry cleaning machine, for the implementation of said method
• FIG. 2 shows the diagram of a longitudinal section and a cross section (Figure 2a) of the door of the dry cleaning machine ( Figure 2b) equipped with an atomization nozzle;
• FIG. 3 illustrates the supply circuit of the pneumatic atomization nozzle installed on the door of the machine
• FIG. 5 shows the main steps of the dry cleaning process of the invention, in schematic form.
• the dry cleaning machine 1 for textiles and leather goods - hereinafter referred to as articles - according to the invention comprises a drum 2 made of stainless steel and without axis, with 50% complete drilling.
• the drum 2 mounted on rollers with alternating rotation in a enclosure 3 completely sealed, is provided with several beaters 4, preferably four, for lifting the effects of alternating rotation.
• the dry cleaning machine 1 also includes the following:
• the beaters are arranged longitudinally and radially inside the drum. In the example illustrated, these are plates in the shape of a rectangular trapezium, the upper face of which has a downward inclination from the door towards the opposite bottom of the enclosure. This arrangement promotes the penetration of the washing composition and ensures uniform mixing of the articles which move in front of the nozzle.
• the articles are caused to move in two types of movement: in a circular direction - around the axis of rotation of the drum - and in a longitudinal direction.
• the door 11 is constructed in the form of a truncated cone, being characterized by:
• annular rim 13 of internal diameter b and external diameter c, intended to be applied in leaktight fashion around the outline of the opening for closing the enclosure,
• the nozzle 12 is mounted centrally in the bottom 14, corresponding to the lower part of the truncated cone. It is therefore located at a distance d from the enclosure 3 which is determined so as to obtain spraying throughout the section of the drum as soon as it enters the level of the rim 13.
• these parameters have the following values:
• FIG. 3 which illustrates the circuit 15 supplying the atomizing nozzle 12
• the air enters the circuit by an air inlet 16, then passes through a filter 17. Its pressure is adjusted to the by means of regulator 18.
• the air passage in the circuit is controlled by the shut-off valve 19.
• FIG. 3a provision is made for an arrival 20 of the liquid to be sprayed (washing composition), under control of the valve 21. After passing through the filter 22, said liquid arrives at the nozzle 12 under pressure, of which the value is maintained between 0.7 and 4 bars thanks to the regulator 23. The air and said liquid can be mixed either internally or externally to give a completely atomized jet.
• the liquid to be sprayed (washing composition) is brought to the nozzle 12 by siphoning (siphoning height e) or by gravity. The liquid is sucked into the supply line 24 then mixed with the air and then atomized.
• the cleaning machine is also equipped with the following equipment ( Figure 4): a water recovery tank, a condenser, a filtering space (not shown), a compressor 25 with a 30-liter tank, with a minimum power of 6 bars, to feed the nozzle 12, a water softener 26, a dosing pump 27 and a reservoir for the concentrate of cleaning 28 (Figure 4), as well as a cooling unit and hot water tanks (coil) from 30 ° to 80 ° C and prepared products (not shown).
• equipment Figure 4
• Filtration is constant from the start to the end of the cleaning cycle, as well as during the drying phase.
• the described dry cleaning machine requires just a water inlet 29 and a power outlet.
• the machine controls are located on the front. All the elements of the machine in contact with the washing composition are made of stainless steel, the seals being made of Teflon.
• the dry cleaning and / or degreasing process of the textile articles and / or leather goods of the invention comprises the following main phases (cycles), as shown in FIG. 5:
• brewing phase o the articles are placed in the drum 2 of the machine; o ventilation and stirring of articles by rotational movements
• pneumatic atomization phase o closing of the ventilation circuit 5; o stop ventilation and heating; o maintenance of mixing; o maintaining the temperature at around 40 ° C; o pneumatic atomization, of not more than 50 ⁇ m, of the washing composition in the drum 2 according to the requested adjusted humidity level; o duration between 5 and 15 min.
• - cycle III cleaning phase: o stopping the pneumatic atomization; o ventilation; o keeping ventilation circuit 5 closed; o duration ranging from 10 to 20 min; o maintaining the temperature at around 40 ° C;
• - cycle IV drying phase: o opening of the ventilation circuit 5; o ventilation; o duration ranging from 10 to 20 min; o temperature maintained between 30 and 45 ° C;
• the cleaning method of the invention also includes a pre-spotting step.
• the use of a pre-stain remover can be achieved: by machine; on a stain removal table; on a mannequin.
• phase IV and the end of phase V are triggered by a humidity detector.
• Example 1 The process according to the invention comprises the following steps: i) filling the machine (5 to 90 kg) with the articles - textiles and / or skins - through door 9, then closing door 9; choice of program; start of program (blocking of closure); start-up, ii) placement of articles and ventilation thereof by rotations (alternating-inverted); this mixing, corresponding to cycle I, causes the opening of textiles and / or leather goods as well as their dusting, the coarsest particles being eliminated; duration between 5 to 10 min, ventilation function on (progressive heating); circuit 5 open.
• the pneumatic atomization of the product leads to an increase in the weight of the garments of the order of 5 to 70%.
• the weight gain of the clothing is between 5 and 40%.
• the dry cleaning machine operates in a closed circuit by condensation.
• the humidity detector triggers the end of the heated drying and the end of the overall process cycle.
• Residue condition dry, clean fibers, no particular odor

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Detergent Compositions (AREA)
• Treatment Of Fiber Materials (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2003
  • 2003-04-04 FR FR0304249A patent/FR2853325B1/fr not_active Expired - Fee Related
• 2004
  • 2004-04-01 CA CA002524788A patent/CA2524788A1/fr not_active Abandoned
  • 2004-04-01 WO PCT/FR2004/000826 patent/WO2004090219A2/fr active Application Filing
  • 2004-04-01 EP EP04742424A patent/EP1611276A2/de not_active Withdrawn
  • 2004-04-01 CN CNB2004800112529A patent/CN100343441C/zh not_active Expired - Fee Related
  • 2004-04-01 US US10/551,762 patent/US20060179582A1/en not_active Abandoned

Non-Patent Citations (1)

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