EP2097575B1 - Procede et appareil pour distribuer des compositions liquides de traitement de tissu dans des machines a laver - Google Patents

Procede et appareil pour distribuer des compositions liquides de traitement de tissu dans des machines a laver Download PDF

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Publication number
EP2097575B1
EP2097575B1 EP07869701A EP07869701A EP2097575B1 EP 2097575 B1 EP2097575 B1 EP 2097575B1 EP 07869701 A EP07869701 A EP 07869701A EP 07869701 A EP07869701 A EP 07869701A EP 2097575 B1 EP2097575 B1 EP 2097575B1
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EP
European Patent Office
Prior art keywords
clothing
cycle
liquid fabric
drum
fabric treating
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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.)
Not-in-force
Application number
EP07869701A
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German (de)
English (en)
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EP2097575A1 (fr
Inventor
Michael J. Ogden
Arthur V. Shannon, III
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Individual
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Individual
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    • 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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only

Definitions

  • This invention relates to a method and apparatus for delivering a liquid fabric treatment composition to clothing within a clothes washing machine.
  • top loading machines There are generally two types of clothes washing machines commercially available, namely, top loading machines and front loading machines. Although operation of such machines varies to some extent from manufacturer to manufacturer, typically water is introduced into the machine with the clothing and detergent is added either manually or automatically in advance of a washing cycle. After completion of the washing cycle, the wash water is drained and clean rinse water is added. The clothes are rinsed in a rinse cycle and then the rinse water is drained from the washer leaving the clothing saturated with water. A spin cycle is initiated to remove as much water as possible from the clothing, after which the damp clothing may be removed from the washing machine for drying.
  • Fabric treating compositions have been developed which are capable of imparting one or more of a variety of properties to articles of clothing, such as softness, fragrance, brightening, bodying, reduced static, anti-soiling, anti-creasing and others
  • Liquid fabric treating compositions such as liquid fabric softeners sold under the "Downy" brand owned by Proctor & Gamble of Cincinnati, Ohio, are conventionally introduced into both front loading and top loading clothes washing machines during the rinse cycle. Front loading washing machines use much less water than top loading machines in the rinse cycle, but with both types of machines a significant quantity of water is nevertheless introduced into the washing machine. Consequently, liquid fabric treating compositions added during the rinse cycle must be delivered in relatively high concentrations in order to transfer onto or into the fabric of the clothing.
  • US 4,489,455 describes an apparatus and a process for laundering textiles based upon utilizing quantities of an aqueous liquid wash liquor in the wash step ranging from, at least, just enough to be substantially evenly and completely distributed onto all portions of the textiles to, at most, about 5 times the dry weight of the textiles to be laundered.
  • US 5,191,669 discloses an improved wash process for a horizontal washer wherein a concentrated detergent solution is applied to a spinning wash load, the load is spun to effect a greater than one gravity force to maintain the clothes load against the basket wall, and the concentrated detergent solution is recirculated through the clothes lad for a first period of time. After the firs period of time, the detergent solution is diluted, although the concentration remains above a normal concentration of 0.06 to 0.28 %
  • This invention is directed to a method and apparatus for delivering and transferring a fabric treating composition to wet clothing within a clothes washing machine.
  • the washing machine is operated in the normal fashion through the rinse cycle, i.e. rinse water is introduced into the washing machine following the wash cycle and then drained leaving the clothing saturated with water.
  • a liquid fabric treating composition is introduced into the washing machine with the saturated clothing after completion of the rinse cycle but in advance of the spin cycle.
  • the liquid fabric treating composition and the saturated clothing are tumbled together for a period of time so that an effective amount of the liquid fabric treating composition may be transferred to the clothing as a result of contact of the liquid fabric treating composition with water contained in the clothing.
  • the spin cycle in then initiated, after which time the clothing may be removed from the washing machine for drying.
  • FIG. 1 is a schematic block diagram of the method of this invention
  • Fig. 2 is a cross sectional view, in partial elevation, of a front-loading washing machine with means for dispensing a fabric treatment composition onto clothing within the drum of the washer;
  • Fig. 3 is a perspective view of the reservoir of the washing machine depicted in Fig. 2 , with its drawer partially open.
  • FIG. 1 the present method of transferring a liquid fabric treating composition to clothing in a washing machine during the course of a laundering operation is schematically depicted in a block diagram.
  • Boxes 10, 12, 14 and 16 are intended to collectively represent a washing cycle performed in conventional top loading or front loading washing machines.
  • the steps denoted by boxes 10, 12 and 14 may be performed in any sequence, i.e. the water could be introduced into the washing machine first and then clothing followed by the detergent, or the water and detergent could be introduced together followed by the clothing etc.
  • the clothing is washed in a washing machine by the combination of water and detergent during a washing cycle, depicted by box 16.
  • the term "clothing" is intended to be broadly construed as applying to essentially any item which is commonly laundered in a washing machine, including, without limitation, articles of clothing, sheets, towels, rugs and other items made of fabric.
  • wash water is drained from the washer as depicted by box 18. It is contemplated that draining of the wash water may be accomplished in any suitable fashion, such as by spinning the drum of the washer or the like.
  • a rinse cycle is then performed as schematically represented by boxes 20, 22 and 24 in Fig. 1 . Generally, rinse water is added to the washer, as in box 20, the clothing is rinsed as represented by box 22 and the rinse water is thereafter drained. See box 24. Variations of such rinse cycle are common. For example, depending on the particular model of washing machine the rinse cycle may comprise several cycles of adding water to the drum of the washer, agitating the clothing with the added water and then spinning the drum to remove water from the washer and from the clothing.
  • liquid fabric treatment compositions such as fabric softeners are typically introduced into the drum of the washer near the end of the rinse cycle after the drum has been filled or partially filled with a quantity of rinse water but before the rinse water is drained.
  • the fabric treatment composition mixes with the rinse water and is transferred to the clothing as it is agitated within the drum.
  • the introduction of fabric treating compositions such as fabric softeners into the rinse water during the rinse cycle requires such compositions to be relatively concentrated and adversely affects the efficiency with which the compositions may be transferred to the clothing.
  • the method and apparatus of this invention allows the rinse cycle to proceed to completion without the addition of a liquid fabric treating composition.
  • the method an apparatus of this invention includes two activities conducted between the end of the rinse cycle and before the initiation of the spin cycle.
  • liquid fabric treating composition is directed into contact with the saturated clothing within the washing machine. See box 26. As discussed below, this may be accomplished by spraying the composition from a nozzle located within the interior of the drum or other means.
  • the saturated clothing and liquid fabric treating composition are tumbled for a period of time sufficient to transfer an effective amount of the liquid fabric treating composition to the clothing as a result of contact of such composition with water contained within the clothing. See box 28.
  • the spin cycle 30 may then be initiated, and the clothing removed from the washing machine when the spin cycle is completed. See box 32.
  • the active ingredient(s) within the liquid fabric treating composition is transferred to the clothes within the washing machine as a result of contact of the composition with the water held within the saturated clothing in the washer.
  • the fabric treating composition need not make contact with the water contained in each individual article of clothing, but that it need only contact at least some of the articles to transfer the composition thereon. Once some articles of clothing receive the fabric treating composition, they transfer it to other articles by contact with the water in such other articles.
  • an effective amount of the liquid fabric treating composition has been transferred into or onto the fibers of the clothing to impart a desired property to the clothing, as discussed below.
  • active ingredients may be employed in the liquid fabric treating composition depending upon the particular property or properties to be imparted to the clothing.
  • active ingredients may include, without limitation, anti-creasing agents, anti-soil agents, bacteriostatic agents, brightening agents, bodying agents, softening agents, dyes, fiber emollients, finishing agents, fragrances, insect repellants, germicides, lubricants, mildew-proofing agents, moth-proofing agents, shrinkage controllers and sizing agents.
  • Additives and auxiliaries may also be included in the composition, such as preservatives, anti-static agents, fragrances and others.
  • the liquid fabric treating composition may comprise a carrier and one or more active ingredients each capable of imparting a particular property or characteristic to an article of clothing.
  • active ingredients may include, without limitation, anti-creasing agents, anti-soil agents, anti-static agents, bacteriostatic agents, brightening agents, bodying agents, softening agents, dyes, fiber emollients, finishing agents, fragrances, insect repellants, germicides, lubricants, mildew-proofing agents, moth-proofing agents, shrinkage controllers and sizing agents.
  • the carrier may be water.
  • the active ingredients noted above may include different classes of compounds, as is well known to those of ordinary skill in the art, but each compound selected for the liquid fabric treating composition of this invention may be added to the carrier to form a solution, dispersion or emulsion at ambient temperatures, without the addition of heat.
  • One particular type of active ingredient may comprise a single material or a mixture of materials which are known to provide benefits to the skin.
  • Clothing which receives a skin-treating active ingredient from the liquid fabric treating composition in accordance with the method of this invention subsequently transfers it to the skin when the clothing is worn by an individual.
  • the skin-treating active ingredient can comprise essentially any known component for treating human skin, such as insect repellants, UV absorbers, skin moisturizers, tanning agents, wrinkle removers, deodorants, cellulite reducers, vitamins, anti-oxidants, minerals, lipid layer enhancers, hair growth suppressants, emollients, botanical actives and the like.
  • the skin treating active ingredient can be derived from a broad range of classes of materials such as emollients, lubricants, super-fatting agents, natural extracts which provide benefits to the skin depending upon the nature of the natural extracts, the lees from wine-making, DNA derivatives, hydrolyzed proteins both of animal and vegetable origin, derivatives of the hydrolyzed proteins, plant extracts, the skin-active portions of plant extracts and the like.
  • One particular skin-treating active ingredient suitable for use in the liquid fabric treating composition is commercially available under the trademark PLANTATEXTM HCC owned by Cognis Deutchland GmbH & Co.
  • This ingredient is a wax dispersion with glyceryl esters, an emulsifier and water. It contains skin treating components such as glycerol oleate, which is a lipid layer enhancer.
  • the liquid fabric treating composition may further include one or more additives and auxiliaries to provide known benefits to the treated articles of clothing such as anti-static properties, a pleasing aroma, improved shelf life and the like.
  • preservatives such as formaldehyde, parabens, pentanediol, sorbic acid and other classes of compounds may be added, as is well known in the art.
  • a number of different fragrances can be employed in the composition to create the desired smell of the clothing, including, without limitation, rose oil, lavender, lilac, jasmine, vanilla, wisteria, lemon, apple blossom or compound bouquets such as citrus, spice, aldehydic, woods, oriental, baby powder and others.
  • the washing machine 34 comprises a housing 36 defining a hollow interior 38 with an opening 40 on one side.
  • a door 42 is mounted at the opening and movable between and open and closed position.
  • a tub 44 is located within the hollow interior 38 and it receives a rotating drum 46 coupled to a drive mechanism 48.
  • the drum 46 may have holes 50 to allow water and other liquids introduced therein, as discussed below, to pass through to the tub 44. These liquids may be drained from the tub 44 via a drain line 52 within which a valve 54 and drainage motor 56 may be mounted.
  • a reservoir 58 is mounted within the hollow interior 38 of the housing 36, and it is coupled to a cold water line 60 having a valve 62 and a hot water line 64 having a valve 66.
  • One end of an outlet line 68 may be connected to the base of the reservoir 58, and its opposite end mounts to a dispenser such as a nozzle 70 coupled to the rotating drum 46.
  • the reservoir 58 may be provided with a drawer 72 having compartments 74, 76 and 78 for receiving laundering additives such as detergent, bleach and one of the liquid fabric treating compositions discussed above, respectively.
  • the operation of the washing machine 34 is governed by a controller 80, as diagrammatically illustrated in Fig. 2 , to perform a laundering operation.
  • the controller 80 is coupled to the drive mechanism 48, to the reservoir 58 and to the valve 54 and drainage motor 56 of the drain line 52.
  • the controller 80 operates the washing machine in a conventional manner during the washing cycle represented by boxes 10-18 in Fig. 1 , and the rinse cycle depicted as boxes 20-24.
  • the controller 80 is operative to activate one or both of the water lines 60, 62 and direct a flow of water into the compartment 78 of reservoir 58 where a liquid fabric treating composition is located.
  • the nozzle 70 is effective to spray the combination of liquid fabric treating composition and water onto clothing 82 located along the bottom of the rotating drum 46, as depicted by dotted lines 84 in Fig. 2 .
  • the controller 80 rotates the drum 46 for a selected period of time. Rotation of the drum 46 tumbles the clothing 82 and the liquid fabric treating composition together, as represented by box 28 in Fig. 1 .
  • liquid fabric treating composition onto the clothing 82 within the drum 46 is described above as being accomplished by the flow of water through a compartment 78 in reservoir 58, through outlet line 68 and out of the nozzle 70.
  • the liquid fabric treating composition may be directed into contact with the clothing 82 within the drum 46 by other means such as a manually operated spray device, or alternative automatic means.

Claims (9)

  1. Procédé pour transférer une composition liquide de traitement de tissu à un vêtement (82) dans une machine à laver (34) pendant le déroulement d'une opération de blanchissage, ladite opération de blanchissage comprenant les étapes d'introduction du vêtement dans la machine à laver (10), d'exécution d'un cycle de lavage (12, 14, 16, 18), d'exécution d'un cycle de rinçage (20, 22, 24) à la suite cycle de lavage (12, 14, 16, 18), dans lequel le vêtement (82) contient au moins une certaine quantité d'eau à la fin du cycle de rinçage (20, 22, 24), et, d'exécution d'un cycle d'essorage (30) après le cycle de rinçage (20, 22, 24), caractérisé par :
    l'exécution d'un cycle de transfert (26, 28) après l'achèvement du cycle de rinçage (20, 22, 24) lorsque l'eau de rinçage a été évacuée de la machine à laver mais avant le déclenchement du cycle d'essorage (30), ledit cycle de transfert comprenant les étapes consistant à :
    (a) mettre le vêtement en contact avec une composition liquide de traitement de tissu (26) ; et
    (b) faire tourner le vêtement avec la composition liquide de traitement de tissu afin qu'une quantité efficace de composition liquide de traitement de tissu soit transférée au vêtement par suite du contact de la composition liquide de traitement du tissu avec l'eau contenue dans le vêtement (28).
  2. Procédé de la revendication 1, dans lequel les étapes (a) et (b) sont exécutées sensiblement simultanément
  3. Procédé de la revendication 1, dans lequel l'étape (a) est d'abord exécutée et l'étape (b) est ensuite exécutée.
  4. Procédé de la revendication 1, dans lequel l'étape (b) consiste à faire tourner un tambour (46) dans lequel le vêtement (82) est placé à une vitesse qui permet au vêtement (82) de tourner sensiblement perdre l'eau qui est présente dans le vêtement (82) après l'exécution du cycle de rinçage (20, 22, 24).
  5. Machine à laver (34) pour laver un vêtement (82) dans une opération de blanchissage qui comprend un cycle de lavage (12, 14, 16, 18), un cycle de rinçage (20, 22, 24) exécuté à la suite du cycle de lavage (12, 14, 16, 18), et un cycle d'essorage (30) exécuté après le cycle de rinçage (20, 22, 24), ladite machine à laver (34) comprenant un châssis (36), une cuve (44) placée dans ledit châssis (36), un tambour (46) placé dans la cuve (44) et qui reçoit le vêtement (82) à laver, un mécanisme d'entraînement (48) couplé audit tambour (46) et qui fait tourner ledit tambour (46) dans ladite cuve (44), et, un réservoir (58) contenant un détergent et une composition liquide de traitement de tissu, ledit réservoir étant couplé à un distributeur (70) qui communique avec ledit tambour (46), caractérisé par :
    une unité de commande (80) couplée audit mécanisme d'entraînement (48) et audit réservoir (58), ladite unité de commande (80) actionnant ledit réservoir (58) après l'achèvement dudit cycle de rinçage (20, 22, 24), lorsque l'eau est évacuée dudit tambour (46) afin que la composition liquide de traitement de tissu soit émise hors dudit distributeur (70) et mise en contact avec le vêtement (82) placé dans ledit tambour (46), ladite unité de commande (80) provoquant la rotation dudit tambour (46) avec la composition liquide de traitement de tissu en contact avec le vêtement (82), mais avant le déclenchement dudit cycle d'essorage (30), afin qu'une quantité efficace, de composition liquide de traitement de tissu soit transférée au vêtement (82) par suite du contact de la composition liquide de traitement du tissu avec l'eau qui est présente dans le vêtement après l'achèvement du cycle de rinçage (20, 22, 24).
  6. Machine à laver (34) de la revendication 5, dans laquelle ladite unité de commande (80) provoque simultanément l'émission de ladite composition liquide de traitement du tissu à partir dudit distributeur (70) et sa mise en contact avec le vêtement (82), et provoque la rotation dudit tambour (46) pour faire tourner le vêtement (82).
  7. Machine à laver (34) de la revendication 5, dans laquelle ladite unité de commande (80) provoque l'émission de la composition liquide de traitement du tissu à partir dudit distributeur (70) et sa mise en contact avec le vêtement (82), puis provoque la rotation dudit tambour (46) pour faire tourner le vêtement (82).
  8. Machine à laver (34) de la revendication 5, dans laquelle ladite unité de commande (80) provoque initialement la rotation dudit tambour (46) pour faire tourner le vêtement (82), puis provoque l'émission de la composition liquide de traitement du tissu à partir dudit distributeur (70) et sa mise en contact avec le vêtement (82).
  9. Machine à laver (34) de la revendication 5, dans laquelle ladite unité de commande (80) provoque la rotation dudit tambour (46) à une vitesse telle que le vêtement (82) tourne sensiblement sans perdre l'eau qui est présente dans le vêtement (82) après l'achèvement du cycle de rinçage (20, 22, 24) mais avant le déclenchement du cycle d'essorage (30).
EP07869701A 2006-12-29 2007-12-21 Procede et appareil pour distribuer des compositions liquides de traitement de tissu dans des machines a laver Not-in-force EP2097575B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US88268506P 2006-12-29 2006-12-29
US11/958,781 US20080155756A1 (en) 2006-12-29 2007-12-18 Method and apparatus for delivering liquid fabric treatment compositions in washing machines
PCT/US2007/088481 WO2008083051A1 (fr) 2006-12-29 2007-12-21 Procédé et appareil pour distribuer des compositions liquides de traitement de tissu dans des machines à laver

Publications (2)

Publication Number Publication Date
EP2097575A1 EP2097575A1 (fr) 2009-09-09
EP2097575B1 true EP2097575B1 (fr) 2011-09-14

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Application Number Title Priority Date Filing Date
EP07869701A Not-in-force EP2097575B1 (fr) 2006-12-29 2007-12-21 Procede et appareil pour distribuer des compositions liquides de traitement de tissu dans des machines a laver

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Country Link
US (1) US20080155756A1 (fr)
EP (1) EP2097575B1 (fr)
JP (1) JP2010514510A (fr)
CN (1) CN101631906A (fr)
AT (1) ATE524592T1 (fr)
WO (1) WO2008083051A1 (fr)

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Also Published As

Publication number Publication date
CN101631906A (zh) 2010-01-20
ATE524592T1 (de) 2011-09-15
US20080155756A1 (en) 2008-07-03
WO2008083051A1 (fr) 2008-07-10
JP2010514510A (ja) 2010-05-06
EP2097575A1 (fr) 2009-09-09

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