JP2017071872A - Method for washing cloths - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for washing cloths capable of washing away harsh stains or yellow tint on cloths including natural fiber material by hand-wash or by an existing household washing machine, and achieving energy saving with low environmental load.SOLUTION: Cloths including natural fiber material immersed in a detergent solution are exposed to microwaves for 3 minutes or more. The detergent solution includes a detergent in an amount of 20 g or less per liter of water. The microwaves with an output in the range of 500 W to 3000 W at a frequency of 2.45 GHz are applied.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for cleaning cloth, and more particularly, to a method for cleaning cloth including a natural fiber material using a microwave oven.

  2. Description of the Related Art Home washing machines are widely used for cleaning clothes, cloths, cloths such as rags in the home. In addition to normal washing, rinsing, dehydration, and the like, such home washing machines have been proposed that have a function of soaking and washing when the dirt is severe.

  In recent years, a washing machine having a warm water soaking function for performing soaking and washing with warm water has also been proposed (for example, Patent Document 1). In a washing machine equipped with such a hot water soaking function, as a pre-stage of a normal washing process, for example, a cloth is immersed in warm water at 40 ° C. and kept warm for 6 hours. The yellowing and dirt that does not fall are easily removed during the washing process.

  However, in the case of fabrics containing natural fiber materials such as cotton, hemp, wool and silk, it has been difficult to sufficiently remove yellowing and dirt even with a washing machine having such a hot water soaking function. In addition, the function of soaking in hot water cannot be applied to an existing washing machine later, and it is necessary to maintain the water temperature for a long time. Therefore, it has become increasingly important as a social demand in recent years. It was difficult to realize the environmental load.

JP 2003-181190 A

  The present invention has been made in view of the above-mentioned conventional problems, and can remove severe dirt and yellowing adhering to cloth containing natural fiber material even in hand washing and existing household washing machines, and energy saving. Another object of the present invention is to provide a method for cleaning cloths that can realize a low environmental load.

  In order to solve the above-mentioned problems, a method for cleaning a cloth according to the present invention is characterized in that a cloth containing a natural fiber material is immersed in a detergent solution and irradiated with microwaves for 3 minutes or more.

  In such a cloth cleaning method of the present invention, severe dirt and yellowing can be removed simply by irradiating a cloth containing a natural fiber material immersed in a detergent solution with a microwave using a household microwave oven. be able to. In addition, it is not necessary to keep warm for a long time or to wash in the subsequent process, and the amount of water and electric power used can be reduced, so that energy saving and low environmental load can be realized.

  The present invention provides a cloth washing method that can remove severe dirt and yellowing adhered to cloth containing natural fiber material even in hand washing and existing home washing machines, and can realize energy saving and low environmental load. can do.

It is process drawing of 1st Embodiment containing the washing | cleaning method of the cloth concerning this invention. It is a graph which shows dirt removal evaluation with respect to various dirt sources by the external appearance check of Example 1 and Comparative Examples 1-3. It is the external appearance photograph which shows the stain | pollution | contamination before a process, and the external appearance photograph which compares Example 1, Comparative Example 1, 3 and Reference Example 1,2,4. It is process drawing of 2nd Embodiment including the washing | cleaning method of the cloth concerning this invention. It is a graph which shows dirt removal evaluation by the external appearance check of Example 2 and Comparative Examples 4-6.

(First embodiment)

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. In the cloth cleaning method of the present invention, a cloth containing a natural fiber material is immersed in a detergent solution stored in a container, and the container is placed in a microwave oven for household use and irradiated with microwaves. Wash with. Examples of the natural fiber material used for the fabric include cotton, hemp, wool, silk, and the like. The natural fiber material may be a fabric made only of these natural fiber materials, or a blend of natural fiber materials and synthetic fiber materials. The cloth which consists of materials may be sufficient. As will be described later, in natural fiber materials, dirt and yellowing are harder to remove than in synthetic fiber materials, but even if natural fiber materials are stained by irradiating microwaves while cloths are immersed in a detergent solution, It is possible to effectively wash yellowing.

  FIG. 1 is a process diagram including a cloth cleaning method in the present embodiment. Step S1 is a detergent solution preparation step, in which water is poured into a container to dissolve a predetermined amount of detergent to prepare a detergent solution. The detergent solution is preferably a solution obtained by dissolving 20 g or less of a commercially available laundry detergent per liter of water, and more preferably 15 g or less. By reducing the amount of detergent per liter of water, it is possible to reduce the amount of detergent necessary for washing fabrics and realize a cleaning method with a low environmental load. Various detergents such as commercially available powder detergents and liquid detergents can be used as detergents to be dissolved. In addition to surfactants, various cleaning aids (water softeners, alkali agents, pH adjusters, chelating agents, enzymes, etc.) Etc.), but even if it does not contain a bleaching agent, the cloth cleaning method according to the present invention can provide a sufficient cleaning effect.

  Next, in the dipping process of step S2, the cloth to be cleaned is immersed in the detergent solution in the container. In the dipping process, it is only necessary to immerse the part of the cloth to be cleaned that is heavily soiled in the detergent solution, but when irradiated with microwaves, heating will not be uneven and the cloth will not be damaged. It is preferred that the entire fabric is immersed in the detergent solution.

  Next, in the microwave irradiation process of step S3, the container is placed in a household microwave oven and irradiated with microwaves for a predetermined time to be heated. In the cloth cleaning method of the present invention, the detergent solution is heated in this microwave irradiation step, and the cleaning effect of removing yellowing and dirt adhering to the cloth of the detergent component can be obtained. In this step, it is not necessary to agitate the detergent solution and the cloth, but if necessary, it may be agitated by some method to assist the supply of the detergent components and prevent reattachment of dirt.

  The microwave irradiation time is preferably 3 minutes or more, more preferably 4 minutes or more, and further preferably 5 minutes or more in order to sufficiently remove dirt and yellowing. An irradiation time of 2 minutes or less is not preferable because it is necessary to set the microwave output high in order to obtain a sufficient cleaning effect. Further, since the effect of cleaning is not improved even if the microwave is irradiated for a predetermined time or more, in order to reduce power consumption, it is 20 minutes or less, more preferably 15 minutes or less, and further preferably 10 minutes or less.

  In the case of using a home microwave oven, the frequency of the irradiated microwave is 2.45 GHz, but may be microwaves of other frequencies as long as the detergent solution can be heated. The microwave output is preferably in the range of 500 W to 3000 W, and more preferably in the range of 500 W to 1000 W in order to reduce power consumption.

  Next, in the rinsing process in step S4, the detergent components are washed away with tap water or the like. In this step, it is only necessary that the detergent solution adhering to the cloth can be washed away, and any method such as rinsing by hand washing or a usual rinsing step of a household washing machine may be used. Finally, it is dried in the drying step of step S5. Here, drying may be performed by various methods such as natural drying or using a household dryer.

As a soil source, soy sauce which is water-soluble soil (manufactured by Higashimaru Soy Sauce Co., Ltd.), meat sauce which is water-soluble and oil-soluble soil (Nisshin Foods Co., Ltd.), chocolate which is oil-soluble soil (manufactured by Meiji Co., Ltd.) ) 25% ethanol solution and red wine (Mershan Co., Ltd.), which is a poorly soluble soil, were prepared and adhered to a 100% cotton fabric and a 100% polyester fabric and subjected to a cleaning test.
[Example 1]

Prepare 100% cotton fabric and attach the various stain sources mentioned above. Next, 1 liter of water is put into a container that can be used in a microwave oven, and 15 g of commercially available powdered laundry detergent (“Bold (registered trademark)” manufactured by Procter & Gamble Japan Co., Ltd.) is added and stirred. To obtain a detergent solution. The prepared cloth is put in a container and the whole cloth is immersed in a detergent solution. Next, the entire container is placed in a home microwave oven (“EUPA (registered trademark)” manufactured by Sakai Nippon Electric Co., Ltd.) and irradiated with microwaves at an output of 700 W for 5 minutes. The cloth was taken out from the container, rinsed with tap water and then dried, and then the degree of soiling was visually confirmed.
[Comparative Example 1]

Prepare 100% cotton fabric and attach the various stain sources mentioned above. Next, 1 liter of water is put in a container, and 15 g of the same powdery laundry detergent used in Example 1 is added and stirred to dissolve sufficiently to obtain a detergent solution. The prepared cloth is put in a container, and the entire cloth is immersed in a detergent solution and kept at a water temperature of 50 ° C. for 5 minutes. Next, after removing the cloth from the container, rinsing with tap water and drying, the degree of soiling was visually confirmed.
[Comparative Example 2]

In the same manner as in Comparative Example 1 except that washing in the normal washing mode of the household washing machine was performed instead of rinsing with tap water, the degree of dirt removal was visually confirmed.
[Comparative Example 3]

Fabrics made of 100% cotton were prepared, the above-mentioned various stain sources were attached, washed and dried in a normal washing mode with a household washing machine, and the degree of stain removal was visually confirmed.
[Reference Examples 1 to 4]

Fabrics made of 100% polyester were prepared, and the same manner as in Example 1 and Comparative Examples 1 to 3 except that the various stain sources described above were adhered, and the degree of stain removal was visually confirmed.

  The processing methods of Example 1 and Comparative Examples 1 to 3 and Reference Examples 1 to 4 are shown in Table 1, and the visual stain removal evaluation for various types of soil sources in Example 1 and Comparative Examples 1 to 3 is shown in the graph of FIG. Show. Evaluation is based on a five-step evaluation (5: dirt is completely removed, 4: dirt is almost removed, 3: about half of the dirt is removed, 2: dirt is slightly removed, 1: dirt is not removed. ), And the average points when the number of samples is 3 are shown for each. Moreover, the external appearance photograph which shows the stain | pollution | contamination before a washing process in FIG. 3 and the external appearance photograph which compares Example 1, Comparative Example 1, 3 and Reference Example 1, 2, 4 are shown.

  As shown in FIG. 2, in 100% cotton, which is a natural fiber material and difficult to remove dirt, Example 1 in which washing by washing with a detergent solution and washing with microwaves was performed is a comparative example for all dirt sources. The cleaning effect was higher than any of 1-3. In 100% of the polyesters of Reference Examples 1 to 4, there was no difference in soiling due to the cleaning method, and the cleaning effect was comparable in any method.

In the present embodiment, by irradiating the microwaves in a state where the cloth is immersed in the detergent solution, it is possible to effectively clean dirt and yellowing even with a natural fiber material. In addition, since a cleaning effect can be obtained simply by using a detergent solution that immerses the cloth, the bath ratio represented by the ratio of the weight of the cloth (kg) to the amount of the detergent solution (liter) is 1: 2 A sufficient cleaning ability can be exhibited even at about 1: 5. Therefore, there is no need for a washing process using a large amount of water as in the case of washing using a household washing machine, and the amount of water used for washing fabrics can be greatly reduced to save water, resulting in a low environmental impact. A simple cleaning method. Furthermore, it is possible to realize cleaning more effectively than cleaning by soaking in warm water against dirt and yellowing of fabrics containing natural fiber materials.
(Second embodiment)

  Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 4 is a process diagram including a cloth cleaning method according to the present embodiment. The present embodiment is the same as the first embodiment except that a washing step is provided between the microwave irradiation step and the rinsing step. Step S11 is a detergent solution preparation process, step S12 is an immersion process, step S13 is a microwave irradiation process, step S14 is a washing process, step S15 is a rinsing process, and step S16 is a drying process.

In the washing step in step S14, the cloth is taken out from the home microwave oven and is subjected to normal washing. Washing in this step may be hand washing or a household washing machine may be used.
[Example 2]

  Prepare cloths made of a blend of 65% polyester and 35% cotton and with clothing stains attached. Next, 1 liter of water is put into a container that can be used in a microwave oven, a detergent solution is prepared in the same manner as in Example 1, and microwaves are irradiated by a predetermined method. The cloth was taken out from the container, washed and dried in a normal washing mode of a household washing machine (product name “AQUA (registered trademark)” manufactured by Sanyo Electric Co., Ltd.), and the degree of dirt was visually confirmed.

In Example 2, it was visually confirmed that the cloths were almost completely cleaned. Although washing is performed in the normal washing mode, the cloth has almost been cleaned immediately after the microwave irradiation process, so it is considered that the washing of the cloth has been completed only by the microwave irradiation process. .
[Comparative Example 4]

Fabrics made of a blended material of 65% polyester and 35% cotton, with clothing stains on them, were prepared, washed and dried in the normal washing mode of a household washing machine, and the degree of stain removal was visually confirmed. As a result, the soiling of the cloth was not sufficiently removed.
[Comparative Example 5]

Except for soaking in room temperature water for 6 hours before usual washing, the procedure was the same as in Comparative Example 4 and the degree of soiling was visually confirmed. The water temperature at the start of soaking was 20 ° C., and the water temperature at the end of soaking was also 20 ° C. As a result, the dirt was removed from Comparative Example 4, but the dirt was not sufficiently removed from Example 2.
[Comparative Example 6]

  Except that it was soaked in warm water for 6 hours before usual washing, it was carried out in the same manner as in Comparative Example 4, and the degree of dirt was visually confirmed. The water temperature at the start of soaking was 50 ° C., and the water temperature at the end of soaking was 30 ° C. As a result, the dirt was removed more than Comparative Examples 4 and 5, but the dirt was removed more insufficiently than Example 2.

  The processing methods of Example 2 and Comparative Examples 4 to 6 and the visual stain removal results are shown in Table 2, and the visual stain removal evaluation after washing and drying is shown in the graph of FIG.

  As described above, in the cleaning method in which the cloth containing the natural fiber material is immersed in the detergent solution and irradiated with microwaves for a predetermined time or more, it is more remarkable than Comparative Examples 5 and 6 of the conventional method in which washing is performed after soaking in warm water. It was confirmed that the cleaning power was high.

  In this embodiment, dirt and yellowing can be effectively washed even with a natural fiber material by irradiating microwaves in a state where the cloth is immersed in a detergent solution. In addition, it is not necessary to keep warm for a long time using the hot water soaking function of a household washing machine, and low power consumption can be achieved. Furthermore, it is possible to realize cleaning that is more effective than the cleaning by soaking in warm water for a long time against stains and yellowing of fabrics containing natural fiber materials.

Claims (2)

 A method for cleaning a fabric, comprising immersing a fabric containing a natural fiber material in a detergent solution and irradiating with a microwave for 3 minutes or more.   The method for cleaning cloth according to claim 1, wherein the natural fiber material is one of cotton, hemp, wool, and silk.