JP3209306B2 - How to wash clothing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning clothes .
More particularly, the present invention relates to a method for cleaning clothes , which has an excellent cleaning effect and can easily treat waste liquid after cleaning.

[0002]

2. Description of the Related Art Conventionally, fluorine-based solvents, especially 1,1,2-trichloro-1,2,2-trifluoroethane (hereinafter referred to as chlorofluorocarbon 1) have been used as cleaning solvents for mechanical parts, electronic parts, clothes and the like.
13) is widely used as having excellent properties such as mild solubility, quick drying at low temperature, harmlessness to fabric, and insolubility to adhesives, buttons and the like.

[0003]

Problems to be Solved by the Invention
No. 3 is extremely excellent as a cleaning agent for dissolving and removing organic substances such as grinding oil, machine oil, and fats and oils adhering to various articles, but is particularly problematic in recent years such as environmental pollution, particularly ozone layer destruction. Use has been banned.

Various organic solvents have been proposed as solvents in place of the chlorofluorocarbon 113, but all have problems such as flammability, solvent recovery, cost, and separability from water at the last washing with water. It is not a sufficient substitute for Freon 113, and if the article is washed with such an organic washing solvent other than Freon 113, a further sufficient post-treatment such as washing with water is required for the washed article. However, there is a problem that the contaminants remaining on the surface of the cleaning article cannot be sufficiently removed.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a cleaning method capable of satisfactorily washing clothes and easily treating waste liquid after washing.

[0006]

The above object is achieved by the present invention described below. That is, in the present invention, water is usually adjusted to pH 1
Electrolyzed into alkaline ionized water of 0 to 12 and acidic ionized water of pH 4 to 5
Wash the washed clothes and remove the washed alkaline ionized water
A method for washing articles characterized by neutralizing with on-water .

[0007]

The present inventor has found that among alkaline ionized waters, which have recently been talked about as healthy drinking water, alkaline ionized water adjusted to an appropriate pH range has a remarkable cleaning effect on soiling of clothes. Was. Further, acidic ionic water is produced at the same time as alkaline ionic water is prepared, but after washing clothes with the above alkaline ionic water, rinsing with acidic ionic water, or mixing both after washing, the pH of the wastewater is increased. Was found to be almost neutral, and no special pH adjustment was required during wastewater treatment .

[0008]

Next, the present invention will be described more specifically with reference to examples. Example 1 Tap water (pH 6.80) was electrolyzed using a Shinnool liquid manufacturing machine type B manufactured by Shinnool Electric Co., Ltd. The pH and the contained components of the obtained alkaline ionized water and acidic ionized water and the used raw water are as shown in Table 1 below.

[0009]

[Table 1]

[0010]

[0011]

Example 2 A cleaning solution having the composition shown in Table 2 below was prepared using the above alkaline ionized water. 400 ml of each of these washing solutions was added to 500
in a glass bottle with 2 ml of indoor dust (2
40 mg, 0.8 g of beef oil and 4 ml of liquid paraffin are dispersed and dissolved.
Two pieces of each of the four types of test cloths whose reflectance was measured (total of eight pieces)
And sealed and shaken for 15 minutes. Thereafter, the test cloth was taken out, the adhered solvent was removed with a centrifuge, and then dried at room temperature. The reflectance of the front and back of each test cloth was measured at the same place as above.

The reverse contamination rate of the front and back of each test cloth was calculated based on the following formula, and the average value was calculated. The results are shown in Table 2 below. Reverse contamination rate = (AB) / A × 100 (%) A: Reflectance of test cloth before contamination B: Reflectivity of test cloth after contamination The test cloth used is JIS L 0803 “for dyeing fastness test. Of the "attached white cloth", cotton, acrylic, wool and polyester are cut into 5cm x 5cm each.
The reflectance was measured using a photovolta meter manufactured by Tokyo Denshoku.

[0014]

[Table 2] Then a new variety of fabric in the washing liquid air dried after 1 hour immersion and shaking containing the pollutants, shows the result of washing the contaminated fabric at each new washing liquid in Table 3.

[0015]

[Table 3] A: Indistinguishable from original white cloth.

[0016]

According to the present invention as described above, among the alkaline ionized waters that have recently been talked about as health drinking water, the alkaline ionized water adjusted to an appropriate pH range has a remarkable cleaning effect on clothes stains. Have. Further, acidic ionic water is produced at the same time as alkaline ionic water is prepared, but after washing clothes with the above alkaline ionic water, rinsing with acidic ionic water, or mixing both after washing, the pH of the wastewater is increased. Becomes almost neutral, so that no special pH adjustment is required when treating wastewater .

Continuation of the front page (56) References JP-A-61-14232 (JP, A) JP-A-7-113100 (JP, A) JP-A-7-284744 (JP, A) JP-A-4-27472 (JP) , A) JP-A-3-86277 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C11D 7/50, 7/04

Claims (1)

(57) [Claims] 1. An ordinary method of electrolyzing water into alkaline ionized water having a pH of 10 to 12 and acidic ionized water having a pH of 4 to 5, and washing the contaminated clothing with the obtained alkaline ionized water.
A method for cleaning clothes , comprising neutralizing the subsequent alkaline ionized water with acidic ionized water .