JPH04316665A - Cleaning - Google Patents

Abstract

PURPOSE:To wash cloth into the same cloth as new one without damaging cloth, to omit a process for rubbing off stains with a bamboo whisk and to extremely improve workability by combining dry cleaning with water washing. CONSTITUTION:Washing is dry-cleaned with a petroleum-based solvent mixed with 0.2-4.0vol.% liquid detergent, the washing is squeezed into such a state as to be wetted with the petroleum-based solvent, then a detergent is immediately added to the washing, which is washed with water, then cleaned and dried.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cleaning laundry that has dirt, grime, oil stains, etc. on it without damaging the fabric.

0002

2. Description of the Related Art In laundry shops, laundry items made of cotton or chemical fibers that can be washed with water are washed with detergent. In particular, children's jumpers, which have been worn all winter and become dirty, are brought in in large quantities in early spring, and these are generally cleaned by washing them with water.

[0003] The conventional washing method is to wash the laundry by putting it in water containing detergent, then squeezing it in a dehydrator.
While wet with water, I used a bamboo sasara (brush) and a detergent dissolved in water to scrub away the stains on my elbows and other areas. This method of scrubbing with a bamboo sasara requires scrubbing the entire stain, not just the stained area, or it will become uneven, so even if the laundry has a stain in some areas, it was necessary to scrub the entire stain. As a result, it took about 20 minutes to scrub each dirty jacket with a bamboo sasara, and about 8 minutes for pants. In this way, the stains were rubbed off with bamboo sasara, then rinsed, dried, and finished with an iron.

[0004] However, even with water washing in this way, there are many cases where stains containing oil, such as food juices and sauces, cannot be removed. In this case, wash it again with water or
Alternatively, the items are dry cleaned and then rewashed, but even after such rewashing, many stains were not removed sufficiently.

[0005] Furthermore, the conventional method of scrubbing away stains with a bamboo sasara is time-consuming, especially when a large number of children's jumpers are brought in in early spring.
It took a long time and the workability was extremely poor. In addition, since the bamboo strips are scrubbed vigorously, the fabric becomes fluffy and thin streaks are formed, causing the fabric to lose its luster and become damaged after several cleanings.

[0006]

[Problems to be Solved by the Invention] The present invention eliminates the above-mentioned drawbacks, combines dry cleaning and washing with water, makes it possible to wash the fabric as new without damaging it, and also has a process for scrubbing away stains with bamboo sasara. The purpose of the present invention is to provide a cleaning method that can greatly improve workability by omitting the above steps.

[0007]

[Means for Solving the Problems] The present invention provides zero liquid detergent.
．． After washing and dry cleaning the laundry with a petroleum-based solvent containing 2 to 4.0% by volume, wring the laundry to a wet state with the petroleum-based solvent, and then immediately applying detergent to the laundry. It is characterized in that it is added, washed with water, then rinsed, and then dried.

[0008]

[Operation] The operation of the present invention will be explained according to the steps. First, as the first step, ``dry cleaning of laundry with a petroleum solvent to which 0.2 to 4.0% by volume of liquid detergent has been added'' is carried out. In general, the solvents used for dry cleaning include petroleum-based solvents, which have little pollution problems, and solvents such as perchloroethylene, fluorine, and ethane, which have pollution regulations. When using a solvent such as perchloroethylene, which has pollution regulations, the dry washer must be constructed in an airtight manner, and the solvent must be completely removed and the laundry is kept dry to avoid pollution problems. Although petroleum-based solvents cannot be taken out of the dry washer, they pose fewer pollution problems and can be taken out of the dry washer while the laundry is still wet.Moreover, the structure of the washer is simple and inexpensive, and the solvents used are also inexpensive. In the present invention, dry cleaning is performed using a petroleum solvent.

Further, the petroleum solvent is not used alone, but is used with the addition of 0.2 to 4.0% by volume of liquid detergent. In this case, a little water may be added to the liquid detergent. When laundry is dry-cleaned using a petroleum-based solvent containing liquid detergent, the liquid detergent separates the dirt adhering to the fibers of the laundry, envelops and emulsifies the separated dirt, and disperses it in the petroleum-based solvent. You can remove dirt by letting it dry.

[0010] In normal cleaning, heavily soiled laundry that can be washed with water is generally not dry-cleaned because the solvent will stain it, but is first washed with detergent and water, but in the present invention, it is The first point is to dry clean using a solvent. Note that if the amount of detergent added to the petroleum solvent is less than 0.2% by volume, a sufficient cleaning effect cannot be obtained;
If the amount is added in excess of % by volume, the laundry will tend to discolor, so the above range is desirable.

[0011] After this, as a second step, the step of ``wringing the laundry to the extent that it is wet with a petroleum solvent'' is performed. After dry cleaning, the laundry is wrung out in a dehydrator for about 5 to 10 minutes until it is moistened with a petroleum solvent. In normal dry cleaning, the solvent is completely evaporated and the laundry is dried before being taken out from the dry washer, but in this invention, the laundry is left in a damp state without being dried. It is important to take it out.

Next, as a third step, ``a detergent is added to the laundry that is slightly dampened with a petroleum solvent, and the laundry is washed with water.'' In the present invention, the second point is to immediately put the laundry soaked in petroleum solvent into a washing machine and wash it with detergent. In this case, the detergent may be powder or liquid;
The amount added is approximately 2 to 2.5 times greater than that for normal washing. For example, in the case of powder detergent, it is 100 to 400 g per 10 kg of laundry, and in the case of liquid detergent, it is 350 to 50 g per 10 kg of laundry.
A range of 0cc is good. In this case, there is a problem that if the amount of detergent is small, the cleaning effect will be low, and if a large amount is added, the amount of foam will increase and the cleaning effect will be reduced.

[0013] In this washing process, the fibers are in a wet state with the petroleum solvent, so the oil film of dirt still attached to the fibers is softened, and the fibers are washed with detergent in this state. The oil film still attached to the fibers is released from the fibers, wrapped in detergent, emulsified, and dispersed in water, making it possible to completely remove stains. In conventional dry cleaning, the solvent is removed and the laundry is completely dried, so the oil film of dirt that is still attached to the fibers is reformed and remains as a stain. Even if you wash the stain with detergent and water after it has reformed, the stain cannot be completely removed.

Next, in the fourth step, a step of ``rinsing and then drying to finish'' is performed. Washed laundry can be rinsed with water twice, dried, and finally ironed to give it a shiny finish.

[0015]

[Examples] Examples of the present invention will be described below. 9 liters (1.5% by volume) of liquid detergent was added to 600 liters of petroleum solvent, and 10 kg of the soiled jumper was placed in a dry washer and dry cleaned for 28 minutes. After this, the laundry that has been dehydrated for 7 minutes and dampened with petroleum solvent is immediately placed in the washing machine and washed with powdered detergent.
Add 250g (2.5% of laundry weight) and wash with water for 12 minutes. After that, I rinsed it twice with water for 3 minutes each time, dried it in the dryer, and finally finished it by ironing it.

[0016] The stains are completely removed from the jumper cleaned in this way, and it becomes shiny and like new, and the work time is greatly shortened because the conventional work of scrubbing the stain with a sasara can be completely omitted. We were able to.

[0017]

Effects of the Invention As explained above, according to the cleaning method of the present invention, by first performing dry cleaning and then washing with detergent, it is possible to completely remove stains and make the product look like new. can. Moreover, since the work of scraping the surface of the fabric with the bamboo sasara can be omitted, the work efficiency can be greatly improved, and since it does not damage the fabric, it can give a glossy shine, which is especially effective for fuzzy clothes. By using the method of the present invention, the product can be kept in the same condition as new no matter how many times it is washed. Furthermore, since the laundry is not dried after dry cleaning, the cost of fuel for the boiler can be reduced, among other benefits.

[Brief explanation of drawings]

FIG. 1 is a process diagram showing the method of the present invention step by step.

Claims (1)

[Claims] Claim 1: After washing laundry with a petroleum-based solvent containing 0.2 to 4.0% by volume of liquid detergent and performing dry cleaning, the laundry is wrung out to a wet state with the petroleum-based solvent. A cleaning method characterized by immediately adding a detergent to the laundry, washing it with water, rinsing it, and then drying it.