JP2002045595A - Dry-cleaning method that can effectively remove water- soluble soil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dry-cleaning method wherein not only water-soluble soil attached to clothes being an object to be cleaned can be removed but also the clothes can be prevented from shrinking, and moreover the soiled clothe can be prevented from being soiled again. SOLUTION: Cloths impregnated with water are put into a washing tank of a washing machine together with clothes being objects to be cleaned to perform dry cleaning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry cleaning method for effectively removing water-soluble stains, and more particularly, to a method for effectively removing water-soluble stains on clothes to be treated and for removing the clothes. Can prevent shrinkage,
And a dry cleaning method capable of minimizing recontamination.

[0002]

2. Description of the Related Art As is well known, in dry cleaning for washing clothes with an organic solvent such as petroleum or perchlorethylene, water-soluble dirt (sweat) attached to the clothes is known. , Spills, etc.) were difficult to remove.

In order to remove water-soluble stains attached to clothing, water is directly added to a solvent (Japanese Patent Laid-Open No.
324279), and a method of using a detergent containing water has been proposed.

[0004] Although it is possible to effectively remove water-soluble stains by such a method, on the other hand, there have been problems such as shrinkage of clothing and a high recontamination rate.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and its object is to remove not only water-soluble dirt adhering to clothing to be processed, but also to the clothing. It is an object of the present invention to provide a dry cleaning method which can prevent shrinkage and suppress the recontamination rate.

[0006]

According to a first aspect of the present invention, there is provided a dry cleaning method, wherein a water-absorbent fabric containing water is put into a washing tub of a washing machine together with clothes to be processed. This is a method characterized by performing dry cleaning.

According to a second aspect of the present invention, in the dry cleaning method according to the first aspect, the content of water contained in the water-absorbent fabric is the clothing 1k which is the object to be treated.
The method is characterized in that the amount is 4 to 30 ml per g.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Water-absorbent fabric The water-absorbent fabric used in the present invention is not particularly limited as long as it can contain water. In particular,
Fabrics (knitted fabrics) made of cotton (cotton), silk, rayon or hemp, or a mixture (blend) thereof, and the like are used, but the use of cotton fabrics is preferred because they are excellent in strength, inexpensive, and easily available. Is preferred.

The size of the cloth is not particularly limited, and may be any size as long as it does not hinder the washing of the clothes to be processed. Specifically, it cannot be said unconditionally because it depends on the size of the washing tub, but approximately 20 cm x 2
It is 0 cm to 30 cm x 80 cm. In addition, you may use one sheet of cloth, and may use multiple sheets.

The proportion of water contained in the water-absorbing fabric is not particularly limited, but is 4 to 30 m per 1 kg of clothing to be treated.
It is preferably 1. In the case of less than 4 ml, there is a possibility that a problem of a decrease in detergency of water-soluble dirt may occur,
If it exceeds 30 ml, problems such as increased shrinkage and recontamination of clothing may occur.

Other conditions such as the type and input amount (concentration) of the organic solvent, the type and input amount (concentration) of the detergent, the type of washing machine, and the cleaning process of dry cleaning, etc., follow known methods. I just need.

The method of the present invention will be briefly described as follows. That is, a water-absorbent cloth containing a predetermined amount of water, for example, a cotton cloth, is put into a washing machine at the same time as the clothes to be washed, and dry cleaning may be performed in a normal washing step.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below, but the present invention is not limited thereto.

Example 1 and Comparative Examples 1 and 2 Dry cleaning was performed under the following conditions.

Washing machine: 35 kg machine Solvent: petroleum hydrocarbon (a mixture of naphthene and paraffin), use amount 200 liter Detergent concentration: manufactured by Genbu, "Power Soap", 0.4
% Washing process: washing (15 minutes, overflow), dehydration (5
Min), unraveling (1 min) The conditions for water are as follows (Test Nos. 1-3). Test No. 1: (corresponding to Comparative Example 1) Water was directly charged into the washing machine. Test No. 2: (corresponding to Example 1) A cotton fabric impregnated with water (impregnated) was introduced (water content ratio: 30 ml)
/ Clothing 1kg). Test No. 3: No water added (corresponding to Comparative Example 2).

Test cloth (object to be treated): Soaked in soy sauce, squeezed, and air-dried.

Dry cleaning was performed under the above conditions, and the items (1) cleaning efficiency, (2) re-contamination rate, and (3) shrinkage of clothing were measured for the test cloth after cleaning. The measurement conditions and evaluation method are as follows. In the following, “white cloth” refers to a new cloth or original cloth.

(Washing efficiency): [(Whiteness of sample cloth after washing−
(Whiteness of the sample cloth before washing) / (whiteness of the white cloth−whiteness of the sample cloth before washing)] × 100 (* the higher the numerical value, the higher the washability.) (Recontamination rate): [(white cloth Whiteness-whiteness of the sample cloth after washing)
/ Whiteness of white cloth] × 100 (* The lower the numerical value, the lower the re-contamination rate.) (Whiteness): Reflectance measurement value (using a micro color analyzer TC-1500SX manufactured by Tokyo Denshoku Technical Center) And measured.)

(Clothing shrinkage ratio): 2 pieces of wool knitted fabric
It was cut into 5 cm × 25 cm, and the shrinkage was calculated by examining the change in length after washing. The results are shown in Table 1 below.

[0020]

[Table 1]

Examples 2 to 7 and Comparative Example 3 The same experiment as described above was carried out with the amount of water contained changed (however, a 10 kg petroleum dry machine was used).

The results are shown in the following [Table 2] and [Table 3].

[0023]

[Table 2]

[Table 3]

[0024]

According to the present invention, a dry cleaning method capable of not only removing water-soluble dirt adhering to clothing to be treated, but also preventing shrinkage of the clothing and suppressing recontamination rate. Can be provided.

Claims (2)

[Claims] 1. A dry cleaning method comprising: introducing a water-absorbent cloth impregnated with water into a washing tub of a washing machine together with clothes to be processed to perform dry cleaning. 2. The content of water contained in the water-absorbent cloth is 4 to 30 ml per 1 kg of the clothes to be treated.
The dry cleaning method according to claim 1, wherein: