FR2628451A2 - PROCESS FOR WASHING AND SOFTENING MACHINE LAUNDRY - Google Patents

Abstract

Application to washing and softening the laundry of the machine laundry treatment process, according to which a metering and diffuser device is filled with a quantity of particulate detergent corresponding substantially to a wash, said detergent containing at least one softener, is placed this device in the machine with the laundry to be washed and to be softened, and the washing is then carried out in the usual manner by carrying out a controlled predissolution of the detergent in said device, physically preventing the detergent from leaving the device in particulate form, with a massive and uncontrolled manner, while allowing the washing liquid to penetrate inside the device, so as to allow the gradual release of the pre-dissolved detergent within the medium containing the laundry being washed.

Description

i 2628451 The present invention relates to the subject of the application for

  main patent (FR 87 06413 of 6 May 1987 having the title "Process and device for washing the

machine washing).

  It will be recalled that this previous application relates to a method for washing laundry in the machine, according to which

  a metering and diffusing device is filled with a quantity

  amount of detergent corresponding substantially to a wash,

  this device is placed in the machine with the laundry

  worm and then washing is carried out in the usual manner, the-

  said process being characterized in that a particulate detergent is used and a controlled predissolution of the detergent is carried out in said device, preventing

  physically detergent coming out of the device under-

  particulate, in a massive and uncontrolled manner, while allowing the washing liquid to penetrate inside the

  device, so as to allow progressive release

  ve of the detergent pre-dissolved in the medium containing the

  laundry in the course of washing.

  dosing and diffusing device for implementing the process which has just been defined, characterized in that it comprises a body capable of being filled with the desired quantity of detergent, removable means for closing this body, the body or said means having holes or vents for the release of the detergent, said device

  being characterized in that it comprises separate means

  rant the part of the device comprising the holes or vents of the part comprising the particulate detergent, said means being designed to allow the washing water to pass freely and to practically prevent the massive and uncontrolled exit of the particulate detergent. In a preferred embodiment , such a device has the general appearance of a body of revolution which can be closed by a removable cap, which has holes allowing both the entry of water inside the device and

  also the diffusion of the detergent, the device being charac-

  terized in that it comprises at least one plate mounted inside the device for separating the cap and the part of the body containing the particulate detergent, said plate itself having at least one orifice, the

  surface is less than that of the holes or vents of the capu-

chon

  By continuing its work in the field of processing

  machine laundry using a special detergent

  ring, the Applicant has found that the use of a metering and diffusing device in accordance with the request

  FR 87 06413 and allowing to carry out a pro

  aggressive detergent solution, had a surprising beneficial effect on the softening of the laundry. Thus the present invention relates to a method for washing and softening machine laundry, which applies the technique described in the aforementioned French patent application Studies and comparative experiments have been undertaken to demonstrate the additional function

  softening provided by the invention.

  In all the tests reported below, we used

  read the metering and diffusing device of the type described and illustrated in FIGS. 1 to 3 of the patent application FR

87 06413.

  In a first series of tests, the operation was carried out with a powder detergent available on the market and corresponding to the approximate composition below, already described in the aforementioned patent application:

3 2628451

  CONSTITUENTS% by weight Sodium dodecylbenzene sulfonate 7.0 Di (tallow) aminomethane 2.50 Sodium perborate -monohydrate 2.0 -tetrahydrate 12.0 Calcium montmorillonite 6.0 Sodium tripolyphosphate 22.0 Carboxymethylcellulose 0.3 Ethylenediaminetetraacetate 0.2 Silicate (in solid form) 7.0 C14-trimethylammonium chloride 1.7 Hydrogenated fatty acid 0.2 Butyl hydroxy toluene 0.001 Copolymer of maleic acid and acrylic acid (PM; - 50,000) 2.0

  Ethylene diamine tetramethylene acid-

  phosphonic 0.1 C12_14-dimethylamine oxide 0.4 SAVINASE enzyme (4.0 KNPU) 0.4 Tallow alcohol with 11 ethylene oxide (OEll) units 1.0 Silicone-based foam regulator 0, 6 Polyethylene glycol (MW = 600) 0.01 Sodium carbonate 10.0 Tetra-acetyl ethylene diamine 1.0 Sodium sulfate 16.0 Minority constituents including: brightness, fragrance, color, zinc phthalocyanine sulfonate, 100% additional moisture A Miele W 723 washing machine was used and, as representative samples of linen, terry towels. Operating temperatures were 60

- 90oC.

TEST A

  16Og of the detergent composition was introduced in

  powder defined above in the metering device and

  aforementioned fuser, having an internal volume of approximately 600 ml.

  The holes in the outer cap corresponded to an over-

  total passage face of the order of 2400 mm 2. The diffusing plate housed in the body of the device had a total passage surface of approximately 1900 mm 2.

TEST B

  In this comparative test, the washing was carried out in the traditional way, by introducing 176 g of the same powdered detergent composition (ie 10% more than in

  the metering and diffusing device of test A) in the

  part (bin) provided on the machine for distribution

washing powder.

  The results obtained show that, in the same

  treatment conditions and with sponge towels sa-

  identically related, the cleaning / whitening ratio

  ge is the same in test A and test B, but that test A provides a marked improvement in softening

treated terry towels.

  Without this explanation being able in any way to limit the scope of the present invention, it is believed that this surprising softening effect is due to the presence of the metering and diffusing device at the heart of the laundry being processed. The active softening ingredients (in particular montmorillonite clay) disperse in the washing bath from the inside of the drum and diffuse through the linen towards the outside of the drum, which increases the deposition effect on linen and therefore softening, despite the

  lower amount of detergent composition used

vre.

TEST C

  We obtained results similar to those of the

  know A and B above. using the composition composition

gente powder below:

2628451

  % by weight Sodium dodecylbenzene sulfonate 6.8 C14 trimethylammonium chloride 1.6 C12_14-dimethylamine oxide 0.4 Sodium tripolyphosphate 22.1 Copolymer of maleic acid and acrylic acid (PM 50,000) 1.9 Di (tallow) -aminomethane 2.5 Hydrogenated fatty acid 0.2 Calcium montmorillonite 8.0 Polyethylene oxide (PM + 300,000) 0.2 Glycerol 0.3 Tetra-acetyl ethylene diamine 1.0 Zinc phthalocyanine sulfonate (ppm) 3 , 1 Sodium perborate monohydrate 2.5 Sodium perborate tetrahydrate 11.8 Enzyme (Savinase) 0.4 Sodium silicate 7.2 Sodium carbonate 9.9

  Ethylene diamine tetramethylene acid-

  phosphonic 0.1 Carboxymethylcellulose 0.3 Minority constituents comprising: shine, perfume, color, humidity: 100% supplement In the above composition, the di (tallow) -aminomethane can be replaced by an equivalent amount of

  di (tallow) -benzamide and similar results are obtained.

  The present invention is applicable to any

  what type of particulate detergent, especially in

  dre, containing at least one softener which sees its activity

  greatly improved speed thanks to the use of the metering and diffusing device according to the request FR

87 06413.

Claims (1)

CLAIM   Application to the washing and softening of linen of the machine linen treatment process, according to which   a metering and diffusing device is filled with a quantity   tity of particulate detergent corresponding substantially to a washing, said detergent containing at least one softener, this device is placed in the machine with the washing and softening linen, and the washing is then carried out in the usual manner by carrying out a controlled predissolution   detergent in said device, physically preventing-   the detergent to come out of the device in particular form   circular, in a massive and uncontrolled manner, while allowing the washing liquid to penetrate inside the   device, so as to allow progressive release   ve of the detergent pre-dissolved in the medium containing the laundry being washed.