EP3219842B1 - Procédé de traitement par voie humide de linge - Google Patents

Procédé de traitement par voie humide de linge Download PDF

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Publication number
EP3219842B1
EP3219842B1 EP17000029.3A EP17000029A EP3219842B1 EP 3219842 B1 EP3219842 B1 EP 3219842B1 EP 17000029 A EP17000029 A EP 17000029A EP 3219842 B1 EP3219842 B1 EP 3219842B1
Authority
EP
European Patent Office
Prior art keywords
treatment
treatment additive
laundry
additive
added
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.)
Active
Application number
EP17000029.3A
Other languages
German (de)
English (en)
Other versions
EP3219842A1 (fr
Inventor
Wilhelm Bringewatt
Engelbert Heinz
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.)
Herbert Kannegiesser GmbH and Co
Original Assignee
Herbert Kannegiesser GmbH and Co
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 Herbert Kannegiesser GmbH and Co filed Critical Herbert Kannegiesser GmbH and Co
Publication of EP3219842A1 publication Critical patent/EP3219842A1/fr
Application granted granted Critical
Publication of EP3219842B1 publication Critical patent/EP3219842B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • D06F2103/22—Content of detergent or additives
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/42—Detergent or additive supply
    • 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
    • D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
    • D06F31/005—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies consisting of one or more rotating drums through which the laundry passes in a continuous flow
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents

Definitions

  • the invention relates to a method for the wet treatment of laundry in commercial washing machines according to the preamble of claim 1.
  • treatment additives are used, in particular detergent substances, washing auxiliaries, disinfectants, bleaches, finishing agents or the like.
  • the at least one treatment additive is added to the laundry in a specific dosage, that is to say an amount that is dependent on the weight of the laundry, in particular the item of laundry to be treated, the type of laundry and / or the method of treatment. For reasons of cost, efforts are made to keep the amount of the at least one treatment additive to be metered as low as possible. It has been shown that this type of dosage of the at least one treatment additive often does not meet the requirements. For example, particularly heavy soiling of the laundry and some types of soiling lead to the at least one treatment additive being eliminated quickly and the wet treatment then not being able to be carried out to a sufficient extent. This is especially true for the disinfection of laundry.
  • the at least one treatment additive is metered in with excess. This makes wet treatment more expensive and also has a negative impact on the environment, because especially when it is usually soiled Laundry the treatment liquid to be disposed of still contains a not inconsiderable proportion of the added treatment additive.
  • a washing method for commercial laundries is known in which detergent or bleaching agents are replenished by comparing the actual concentration with a predetermined target concentration.
  • the detergent or bleaching agent is overdosed in that residues are rinsed out.
  • detergents and bleaching agents are lost unused and the rinsing water is polluted by superfluous washing agents and bleaching agents.
  • a household washing machine is known in which different detergents can be reliably identified by a color-sensitive sensor device. By measuring the intensity of the colors during the washing process, detergent consumption can be determined and a corresponding additional dosage can be made.
  • the household washing machine known from this document cannot meet the requirements that are placed on commercial laundry machines.
  • Household washing machines are known in which the current content of detergents is determined and detergents are partly added in portions. These procedures involve overdosing the detergent. At least these known methods allow the detergent to be overdosed.
  • the invention is based on the object of creating a method for the wet treatment of laundry in commercial washing machines which is more economical with regard to the consumption of treatment additives and which ensures reliable disinfection.
  • a method for solving this problem has the measures of claim 1.
  • this method it is provided that initially only a minimum amount of the at least one treatment additive is added to the laundry.
  • a minimum amount of the at least one treatment additive is initially added to the laundry that is always required even in the case of lightly soiled laundry.
  • a certain time after the addition of the at least one treatment additive the current content of the same is measured at least once.
  • the measurement result is then used to determine how high the content of the at least one treatment additive that has not yet been consumed at the time of the measurement is.
  • Shortly after the addition of the minimum amount of the at least one treatment additive it is preferably determined how much of it has been consumed or consumed in a certain time or period of time since the addition.
  • the at least one treatment additive is replenished.
  • the at least one treatment additive is added in a targeted manner as required.
  • the at least one treatment additive can thereby be metered in in a targeted manner, adapted to the degree of soiling of the laundry to be treated.
  • sufficient quantities of the treatment additives can be added to heavily soiled laundry. If the laundry is only lightly soiled, only smaller amounts of treatment additives need to be added. A useless overdosing and an underdosing are thus effectively avoided.
  • Heavily soiled laundry is treated with a sufficient amount of the at least one treatment additive. For example, this ensures that there is adequate disinfection in the case of heavily contaminated laundry.
  • the at least one treatment additive has been added to the laundry, several measurements are carried out at specific, preferably regular, time intervals. During these measurements, the current content and / or the current concentration of the at least one treatment additive are measured. The measurements carried out at regular time intervals after the initial addition of the at least one treatment additive can be used to determine how quickly the added treatment additives are torn open. This is an indication of the degree of soiling of the laundry, so that if necessary, at least one treatment additive can be added in a targeted manner.
  • the method can be developed in such a way that immediately after the addition of the predetermined amount of the at least one treatment additive, the content of the same is measured and the time span or the time interval begins to run from the time of this measurement until the next measurement.
  • the next measurement represents a re-measurement, whereby by comparison with the first measurement it is possible to determine which amount of the at least one treatment additive has already been consumed by the soiled laundry in the time elapsed between the two measurements. Based on the consumption determined between the successive measurements, the actual consumption can then be extrapolated depending on the degree of soiling of the laundry to be treated, preferably each individual item of laundry, and the at least one treatment additive can be replenished accordingly.
  • the time course of the decrease in the at least one treatment additive can preferably be used to calculate how high the total amount of the at least one treatment additive must be in order to be able to carry out an adequate wet treatment of the laundry. In particular, it can be determined in this way what total amount of detergents, disinfectants or other washing auxiliaries is required. For example, this also ensures that the laundry is completely disinfected.
  • the amount of the initially added treatment additive is subtracted from the total amount of the at least one treatment additive determined in order to arrive at the amount of the at least one treatment additive that, after the last measurement, in particular the last remeasurement, and / or the determination of the temporal course of the decrease in the at least a treatment additive is required since it was added to the laundry. In this way, targeted subsequent dosing can take place without any appreciable excess amounts of at least one treatment additive.
  • the at least one treatment additive is added to a treatment liquid with the laundry to be treated.
  • the at least one treatment additive is preferably mixed with the treatment liquid and the laundry contained therein. If it is not a liquid treatment additive, it can also be dissolved in the treatment liquid when it is mixed.
  • the mixing and / or dissolving of the at least one treatment additive during and / or after the metering leads to a uniform concentration of the at least one treatment additive in the entire laundry item and the liquid bath containing the laundry item with the treatment liquid.
  • the at least one measurement can lead to a representative average value of the concentration and / or the content of the at least one treatment additive in the laundry and the treatment liquid.
  • a further advantageous embodiment of the method provides that the at least one treatment additive of a treatment zone is a rotating or pivoting or rocking drivable elongated drum of a conveyor washing machine is added.
  • the or each addition of the at least one treatment additive to the relevant treatment zone of the conveyor-type washing machine is preferably carried out during the rotating, pivoting and / or rocking movement of the drum. This promotes uniform mixing of the at least one treatment additive with the laundry and the treatment liquid in the relevant treatment zone of the drum of the conveyor-type washing machine.
  • the at least one treatment additive to a prewash zone and / or a main wash zone of the conveyor-type washing machine.
  • the laundry still contains a large part of the soiling or soiling that consumes the at least one treatment additive.
  • the single figure of the drawing shows a schematic side view of a commercial washing machine designed as a conveyor-type washing machine.
  • a conveyor-type washing machine 10 and a dewatering device designed as a dewatering press 11 are shown.
  • the dewatering press 11 is arranged behind the conveyor washing machine 10 as seen in the direction 12 of the laundry through the conveyor washing machine 10.
  • a laundry centrifuge can also be arranged behind the conveyor-type washing machine 10.
  • the conveyor-type washing machine 10 has an elongated drum 13 in which a plurality of identical or different chambers 14 are provided.
  • thirteen chambers 14 are provided in succession in the direction of flow 12.
  • the invention is also suitable for tunnel washing machines 10 with a smaller or larger number of consecutive chambers 14.
  • This rotating drive can on done different ways.
  • the drum 13 can be driven to rotate, but also only rocking or pivoting. Then the drum 13 is not driven to rotate with complete revolutions.
  • a prewash zone seen in the direction of passage 12
  • a subsequent main wash zone and, if appropriate, a rinsing zone and / or an aftertreatment zone behind it.
  • An inlet funnel 16 of the conveyor-type washing machine 10 opens into the first chamber 14 of the prewash zone. Laundry is loaded into the first chamber 14 of the conveyor-type washing machine 10 via this. This first chamber 14 is at the same time the first chamber of the prewash zone.
  • the dewatering press 11 Behind the last chamber 14 of the conveyor-type washing machine 10, seen in the flow direction 12, there is an unloading chute 17, via which the wet-treated, namely at least washed, but possibly also rinsed and / or post-treated laundry, reaches the dewatering press 11 or some other dewatering device.
  • the dewatering press 11 At least one dewatering of the washed laundry takes place in such a way that part of the bound liquor from the conveyor-type washing machine 10 is separated from the laundry.
  • the dewatering press 11 can, however, also serve to rinse the laundry coming from the conveyor washing machine 10.
  • the conveyor washing machine 10 then has no rinsing zone.
  • the laundry is washed batchwise.
  • the conveyor washing machine 10 the laundry is washed batchwise.
  • the laundry is washed batchwise.
  • the laundry is treated with treatment liquid in a bath in the conveyor washing machine 10, in particular washed and optionally rinsed and / or equipped.
  • At least one treatment additive is added to the laundry and the treatment liquid. These can be detergent substances, disinfectants and / or bleaches, but also other washing aids.
  • At least one treatment additive is added to the treatment liquid with the laundry located therein in the first chamber 14 of the prewash zone, that is to say the first chamber 14 of the conveyor-type washing machine 10.
  • At least one treatment additive can also be added to at least one other chamber 14 of the conveyor-type washing machine 10.
  • This can be, for example, the main wash zone, preferably the first chamber 14 of the same, the rinsing zone, if the conveyor-type washing machine 10 has one, and / or an aftertreatment zone present in the conveyor-type washing machine 10.
  • Different treatment additives can be added to the laundry in the individual zones, for example detergents in the prewash zone, neutralizing agents, finishing agents, bleaching agents and / or disinfectants in another zone.
  • the conveyor-type washing machine 10 has suitable measuring devices for measuring the amount, the content and / or the concentration of the at least one treatment additive in the laundry and the treatment liquid.
  • Corresponding measurement sensors are assigned to that chamber 14 or those chambers 14 of the conveyor-type washing machine 10 in which the treatment liquid and / or the laundry is to be measured with regard to their content or the concentration of the at least one treatment additive.
  • sampling lines from the relevant chamber 14 of the conveyor-type washing machine 10 to at least one filter, if necessary, and to assign the transducers to the relevant sampling line.
  • the concentration or the content of the at least one treatment additive in the treatment liquid detected by the at least one transducer is transmitted to an evaluation unit, not shown in the figure, which evaluates the measured values obtained and accordingly controls or regulates the amount of the at least one treatment additive to be dosed or re-dosed accordingly .
  • At least one measured value sensor can also be assigned to the dewatering press 11 if at least one treatment additive is also added to the washed laundry in the dewatering press. This is particularly true when the dewatering press 11 is also used to rinse the washed laundry.
  • the method according to the invention runs as follows with the conveyor washing machine 10 described above and the dewatering press 11 arranged downstream of it:
  • the laundry is washed in batches in the conveyor washing machine 10.
  • individual chambers 14 between successive items of laundry cannot be loaded with any items of laundry, for example at least one empty compartment 14 can be provided between items of laundry with laundry of different types.
  • the items of laundry are treated in the chambers 14 with treatment liquid.
  • At least one treatment additive is added to the treatment liquid in at least one treatment zone of the conveyor-type washing machine 10. In all or some of the treatment zones, different treatment additives can be added to the treatment liquid with the laundry contained therein. In the dewatering press 11, too, at least one treatment additive can be added to the laundry which still has the bound liquor of the treatment liquid.
  • the addition of the at least one treatment additive to the laundry with the treatment liquid is preferably carried out with the drum 13 of the conveyor washing machine 10 driven in rotation, with the drum 13 driven in rotation or with drums 13 driven in rotation in opposite directions via pitch circular movements Drum 13.
  • a treatment additive for example detergent
  • the added treatment additive is mixed at least with the treatment liquid in the relevant chamber 14, preferably also the laundry of the laundry item in the chamber 14.
  • the treatment additive is supplied to the first chamber with the item of laundry contained therein, including its treatment liquid.
  • This partial amount of the treatment additive corresponds to the minimum amount that experience has shown is necessary for treating the least soiled laundry.
  • the content or concentration of the treatment additive at the time of addition to the treatment liquid can be determined be closed with the laundry of the laundry item in question.
  • a measurement, preferably a further or repeated measurement, of the content of the treatment additive or its concentration in the liquid with the laundry is carried out in the first chamber 14.
  • This measurement represents a first final measurement.
  • At least on the basis of the result of the measurement carried out after the specified period of time, in particular a final measurement, in particular the amount of treatment additive consumed in the period of time is determined.
  • the time course of the consumption of the treatment additive can be determined.
  • the degree of soiling of the batch of laundry can be derived from this and the amount of treatment additive to be added, if necessary, can be determined. This amount, which corresponds to a remaining partial amount of the treatment additive that is still required, is then subsequently added to the treatment liquid with the batch of laundry in the first chamber 14 following the last measurement, in particular a final measurement, that is, it is replenished.
  • the method described above works in principle in exactly the same way if two or more different treatment additives are added and / or mixed in with the treatment liquid and the laundry item located therein in the same chamber 14. In this case, all treatment additives can be measured at the same time. Preferably, however, it is then provided to measure at least some treatment additives separately, so that each or at least some treatment additives can be metered separately in a targeted manner.
  • the method described above is also followed in order to carry out the required dosage of at least one treatment additive in at least one subsequent zone of the conveyor washing machine 10.
  • This can be the main wash zone of a rinsing zone that may be present in the conveyor-type washing machine 10 and / or an aftertreatment zone of the conveyor-type washing machine 10.
  • the invention is also suitable for other commercial washing machines, so it is not limited to the previously described exemplary embodiments with the conveyor washing machine 10.
  • the invention can therefore also be used in other washing machines used in commercial laundries, for example washer extractors.
  • the method according to the invention then proceeds in exactly the same way, except that metering is not carried out in at least one of the successive zones, but in at least one of the treatment phases of the washing machine that take place one after the other in the same, single chamber of the drum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (10)

  1. Procédé de traitement de linge par voie humide et par lot dans des machines à laver du commerce, une quantité prédéterminée d'au moins un additif de traitement étant ajoutée au linge au début du traitement par voie humide et la teneur actuelle de l'au moins un additif de traitement étant mesurée au moins une fois, caractérisé en ce que seule une quantité minimale de l'au moins un additif de traitement est d'abord ajoutée au linge, laquelle est toujours nécessaire même si le linge est peu sale, la teneur actuelle de l'au moins un additif de traitement est mesurée au moins une fois au bout d'un intervalle de temps déterminé peu après l'ajout de la quantité minimale de l'au moins un additif de traitement, la consommation de l'au moins un additif de traitement est déterminée à partir de ladite teneur jusqu'à la mesure du fait que la variation dans le temps de la consommation de l'au moins un additif de traitement est déterminée sur la base de la durée de l'ajout de l'au moins un additif de traitement jusqu'à la mesure effectuée peu de temps après, et le degré de salissure du lot de linge est déduit de ladite mesure, et la quantité de l'au moins un additif de traitement, qui doit encore éventuellement être ajouté de manière dosée compte tenu du degré de salissure déterminé du lot de linge, est déterminée sur la base de la consommation d'au moins un additif de traitement et éventuellement à nouveau dosée.
  2. Procédé selon la revendication 1, caractérisé en ce que, après l'ajout de l'au moins un additif de traitement, plusieurs mesures de la teneur actuelle de l'au moins un additif de traitement sont effectuées à des intervalles de temps déterminés, de préférence réguliers.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la teneur de l'au moins un additif de traitement est mesurée immédiatement après l'ajout initial d'une quantité partielle prédéterminée de celui-ci, et la durée jusqu'à la prochaine mesure commence à partir de l'instant de cette mesure.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'au moins une autre mesure est effectuée après un intervalle de temps déterminé après la première mesure de la consommation d'au moins un additif de traitement.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que la différence de l'au moins un additif de traitement entre des mesures successives, de préférence des mesures ultérieures successives, est déterminée.
  6. Procédé selon la revendication 5, caractérisé en ce qu'une variation dans le temps de la diminution de la teneur et/ou de la concentration de l'au moins un additif de traitement est déterminée à partir de la différence entre la teneur déterminée sur la base d'au moins une mesure et/ou mesure ultérieure et la teneur initiale ou préalablement mesurée d'au moins un additif de traitement.
  7. Procédé selon la revendication 6, caractérisé en ce que, en fonction de la variation dans le temps de la diminution de la concentration et/ou de la teneur de l'au moins un additif de traitement, on détermine si un dosage ultérieur est nécessaire et, si nécessaire, un dosage ultérieur ciblé de l'au moins un additif de traitement est effectué.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'au moins un additif de traitement est ajouté dans un liquide de traitement dans lequel se trouve le linge, de préférence l'au moins un additif de traitement est mélangé au liquide de traitement lors de et/ou pendant l'ajout au liquide de traitement et est éventuellement dissous dans le liquide de traitement.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'au moins un additif de traitement est ajouté à une zone de traitement concernée d'un tambour allongé (13) entraîné en rotation d'une machine à laver en continu (10), de préférence pendant l'entraînement de rotation et/ou de pivotement du tambour (13) .
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'au moins un additif de traitement est ajouté éventuellement à une zone de rinçage et/ou de post-traitement de la machine à laver en continu (10) dans la zone de prélavage et/ou dans la zone de lavage clair de la machine à laver en continu (10).
EP17000029.3A 2016-03-17 2017-01-09 Procédé de traitement par voie humide de linge Active EP3219842B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016003200.6A DE102016003200A1 (de) 2016-03-17 2016-03-17 Verfahren zur Nassbehandlung von Wäsche

Publications (2)

Publication Number Publication Date
EP3219842A1 EP3219842A1 (fr) 2017-09-20
EP3219842B1 true EP3219842B1 (fr) 2021-11-10

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EP17000029.3A Active EP3219842B1 (fr) 2016-03-17 2017-01-09 Procédé de traitement par voie humide de linge

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EP (1) EP3219842B1 (fr)
DE (1) DE102016003200A1 (fr)
DK (1) DK3219842T3 (fr)
ES (1) ES2905358T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020002312A1 (de) * 2020-04-16 2021-10-21 Herbert Kannegiesser Gmbh Verfahren zur Nassbehandlung von Wäsche
FI130565B (en) * 2021-04-16 2023-11-21 Oy Christeyns Nordic Ab Method and system for machine washing textiles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI80729C (fi) * 1988-04-07 1990-07-10 Vesa Hakulinen Foerfarande och anordning foer dosering av tvaettmedel.
DE4204806A1 (de) * 1992-02-18 1993-08-19 Henkel Kgaa Waschverfahren fuer gewerbliche waeschereien
DE19529787B4 (de) * 1995-08-12 2011-05-19 E.G.O. Elektro-Gerätebau GmbH Verfahren und Einrichtung zur füllstandsunabhängigen Messung der Oberflächenspannung flüssiger Substanzen
DE102007011119A1 (de) * 2007-03-07 2008-09-11 BSH Bosch und Siemens Hausgeräte GmbH Waschmaschine mit automatischer Regelung des Waschprozesses
EP1997948B1 (fr) * 2007-05-29 2018-08-15 Herbert Kannegiesser GmbH Procédé de traitement humide de pièces de linge
US10017893B2 (en) * 2013-03-15 2018-07-10 Whirlpool Corporation Methods and compositions for treating laundry items

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Publication number Publication date
DK3219842T3 (da) 2022-01-17
DE102016003200A1 (de) 2017-09-21
ES2905358T3 (es) 2022-04-08
EP3219842A1 (fr) 2017-09-20

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