JP5795159B2 - Cleaning method for goods - Google Patents

Description

  The present invention relates to a method for cleaning an article, and more particularly, to a method for simply and effectively cleaning an article to which dirt such as sebum adheres by contact with a human body.

Items worn directly by people such as wristwatches, accessories, glasses, etc., and articles used by humans are likely to become soiled with sweat and sebum, and mold may occur.
Such dirt is usually washed with a detergent or the like by wiping or rubbing with a sponge or brush.
However, those that have a finely knitted shape, such as a metal belt of a wristwatch, can not remove the dirt inside the gap by simply wiping the surface, immediately In addition, the generated mold may reach the surface and become black.

Conventionally, an ultrasonic cleaning method is known as a method for cleaning the dirt behind such a gap. However, in ultrasonic cleaning, fine vibrations are continuously generated and impact the product, so even if it is waterproofed, immerse the watch body, which is a precision instrument, in the tank of the ultrasonic cleaner. Exposure to ultrasonic shocks should be avoided. In addition, if the watch glass (windshield) or back cover is cracked or scratched, or if the rubber packing is deteriorated, water will enter from the fine vibration of the ultrasonic waves, and the watch will not be used. It may be possible.
Therefore, when ultrasonically cleaning a metal belt of a wristwatch, care should be taken such as preventing the watch body from being immersed in the water tank of the ultrasonic cleaner or washing the belt after removing the belt from the watch body.

  In relation to the present invention, Patent Document 1 discloses a human body or a cleaning composition comprising a microbubble cleaning composition containing a proteolytic enzyme and a lipolytic enzyme, and a cleaning liquid containing microbubbles. An animal microbubble washing method is described.

JP 2008-94726 A

  An object of this invention is to provide the method of wash | cleaning safely, simply and effectively the articles | goods to which dirt, such as sebum, adhered by contacting with a human body.

  In order to solve the above problems, the inventors of the present invention used a microbubble cleaning composition containing a proteolytic enzyme and a lipolytic enzyme, and a cleaning liquid containing microbubbles, and were finely knitted (mesh-like). ) When we tried to wash the metal belt of a watch that had a shape and darkened due to use, it was found that the darkening of the belt disappeared and it could be effectively cleaned up to the inside of the belt, and by generalizing the knowledge The present invention has been completed.

Thus, according to the present invention, there is provided a method for cleaning an article as described in (1) to (5) below.
(1) A method for cleaning an article comprising a microbubble cleaning composition containing a proteolytic enzyme and a lipolytic enzyme and not containing a surfactant, and a cleaning liquid containing microbubbles.
(2) The cleaning method according to (1), which is a method for cleaning an article to which dirt is attached by contact with a human body.

(3) A method for cleaning an article selected from the group consisting of accessories, glasses, wristwatch belts, fountain pens, nail clippers, bags, buttons, coins, medical instruments, lenses, tableware, toys, and laboratory instruments. The cleaning method according to (1) or (2).
(4) The compounding amount of the proteolytic enzyme is 0.01 to 0.5% by weight with respect to the whole composition, and the compounding amount of the lipolytic enzyme is 0.1 to 1.0 with respect to the whole composition. The washing | cleaning method in any one of (1)-(3) using the composition for microbubble washing | cleaning which is weight%.

(5) Microbubble cleaning further containing at least one alkali metal salt selected from the group consisting of alkali metal carbonates, alkali metal bicarbonates, alkali metal sulfates, alkali metal halides, and alkali metal salts of boron The cleaning method according to any one of (1) to (4), wherein the composition for use is used.
(6) The washing | cleaning method as described in (5) using the composition for microbubble washing | cleaning whose compounding quantity of an alkali metal salt is 80-99.5 weight% with respect to the whole composition.

  According to the present invention, articles that are contaminated with sebum and the like by contact with the human body, in particular, wristwatch metal belts having a finely knitted shape, can be washed safely, simply and effectively. be able to.

It is a figure which shows the structure of an example of the apparatus for enforcing the washing | cleaning method of this invention. 2 is a diagram illustrating a configuration of a main body 1. FIG. FIG. 3 is a photographic diagram showing a state where a wristwatch band is washed in the first embodiment. FIG. 3 is a photographic diagram showing a state in which the wristwatch is washed in the first embodiment. In Example 1, it is a photograph figure of the aqueous solution of the cleaning composition containing microbubbles before wash | cleaning the band of a wristwatch. In Example 1, it is a photograph figure of the aqueous solution of the cleaning composition containing microbubbles after wash | cleaning the wristband of a wristwatch.

  The method for cleaning an article of the present invention is characterized by using a microbubble cleaning composition containing a proteolytic enzyme and a lipolytic enzyme and not containing a surfactant, and a cleaning liquid containing microbubbles.

  The article to be cleaned (object to be cleaned) of the present invention is not particularly limited as long as it can be wetted with water, but it is an article to which dirt such as sebum adheres due to contact with the human body. Is preferred.

  Specific items include accessories such as rings, necklaces, bracelets, earrings, earrings, brooches, tie pins, cuffs, hair clasps, straps, etc .; Coins; medical devices such as tweezers; lenses; tableware; toys;

In the cleaning method of the present invention, since the effects of the present invention can be more exerted, among these, it has a finely intricate shape, and if dirt adheres to the back of the gap, it is difficult to remove it Such an article is preferred.
Examples of such articles include wristwatch metal bands (particularly metal bands having a finely knitted shape (mesh shape)), accessories having a complicated design, and the like.

According to the cleaning method of the present invention, it is possible to safely, easily and effectively remove the dirt that has penetrated to the back of the gap, which is difficult to be removed by a cloth or a brush or by a water flow.
In particular, as will be described later, the wristwatch metal band is particularly preferable because the wristwatch body can be washed together with the wristwatch without removing the wristwatch body from the band if the wristwatch body is subjected to daily waterproofing. .

<Composition for microbubble cleaning>
The composition for cleaning microbubbles used in the present invention (hereinafter sometimes referred to as “the composition of the present invention”) contains a proteolytic enzyme and a lipolytic enzyme, and does not contain a surfactant. .

Proteolytic enzyme (protease) is a general term for enzymes that catalyze the hydrolysis of peptide bonds.
Proteolytic enzymes have a specific pH optimum for action, and can be classified into acid proteinases, neutral proteinases, and alkaline proteinases. In the present invention, any of these proteolytic enzymes can be used without particular limitation.

The proteolytic enzyme is not particularly limited, and examples thereof include chymotrypsin, subtilisin, pepsin, cathepsin D, thermolysin, papain, caspase, apase, Examples include bromelain, actinidin, phytin, trypsin, pancreatin and the like.
These proteolytic enzymes can be used alone or in combination of two or more.

  Specific examples of proteolytic enzymes include trade names such as Protin AC10F (manufactured by Daiwa Kasei Co., Ltd.), sabinase, alcalase, esperase, durazyme (manufactured by Novo Industry Co., Ltd.), maxapem, maxatase (manufactured by Gist Brokers), bioprelase. (Manufactured by Nagase Seikagaku Corporation).

  Among these, in order to obtain an excellent cleaning effect, it is preferable to use at least pancreatin, and it is more preferable to use a combination of pancreatin and other proteolytic enzymes.

  The amount of the proteolytic enzyme is not particularly limited, but is preferably 0.01 to 0.5% by weight, more preferably 0.2 to 0.3% by weight, based on the entire composition.

  The lipolytic enzyme used in the composition of the present invention is an enzyme that hydrolyzes fat to decompose it into glycerin and fatty acid, and is also referred to as lipase.

The lipolytic enzyme is not particularly limited. For example, a lipase derived from Rhizopus arrizus, a lipase derived from Aspergillus niger, a lipase derived from fungi such as Rhizopus delmar; a lipase derived from yeast such as Candida cylindracae; Lipases; lipases present in the gastrointestinal tissues of ruminants such as pregastric lipase or oral lipase; porcine liver lipase;
These lipolytic enzymes can be used alone or in combination of two or more. In order to obtain a more excellent cleaning effect, it is preferable to use two or more lipolytic enzymes.

  Specific examples of lipolytic enzymes include trade names such as Sumiteam NLS (manufactured by Shin Nippon Chemical Industry Co., Ltd.), lipase M “Amano” 10, lipase M “Amano” 10, lipase G “Amano” 50, lipase F-AP15, Lipase AY “Amano” 30G, Lipase R “Amano” G, Lipase T “Amano”, Lipase MER “Amano” (Amano Enzyme), Picantase R8000, Picantase A (Above, Robin), Toyoteam LIP (Manufactured by Toyobo Co., Ltd.), lipase A-10FG, lipase AF-5 (manufactured by Nagase ChemteX Corp.), green a mill EXEL639 (manufactured by Danisco Carter Japan), clear lens lipo, lipolase, lipex, lipozyme, resinase, paratase, gree Zex, Lipopan, Novozyme 435, Les Cytase (manufactured by Novozymes), lipase MY, lipase OF, lipase PL, lipase QLM, lipase AL, phospholipase D (manufactured by Meito Sangyo Co., Ltd.), enchilon AKG (manufactured by Sakai Tosei Chemical Co., Ltd.), phospholipase A1 (Sankyo Lifetech Co., Ltd.) Manufactured), Lipomod 699L, Rhizomax PF (manufactured by Genencor Kyowa Co., Ltd.) and the like.

  The compounding amount of the lipolytic enzyme is usually 0.1 to 1.0% by weight, preferably 0.3 to 0.8% by weight, based on the entire composition.

The composition of the present invention does not contain a surfactant from the viewpoint of obtaining a better cleaning effect of microbubbles. If a surfactant is contained, excessive foaming may occur and the cleaning effect may be reduced.
On the other hand, in the cleaning method using ultrasonic waves, a surfactant is usually used to cancel the surface tension, so that a rinsing operation is essential.
In the cleaning method of the present invention, since no surfactant is used, there is no foaming and almost no rinsing is required. Therefore, the operation is simple and environmentally friendly.

The composition of the present invention preferably further contains an alkali metal salt in addition to the above-mentioned proteolytic enzyme and lipolytic enzyme.
The alkali metal salt enhances the cleaning effect, softens (softens) water (warm water), and also has a role as a bulking agent.

Although it does not restrict | limit especially as an alkali metal salt to be used, For example, alkali metal carbonates, such as sodium carbonate and potassium carbonate; Alkali metal hydrogen carbonates, such as sodium hydrogencarbonate and potassium hydrogencarbonate; Alkali metals, such as sodium sulfate and potassium sulfate Sulfates; alkali metal halides such as sodium chloride and potassium chloride; alkali metal salts of boron such as sodium tetraborate (borax) and sodium borate; alkali metal silicates such as sodium silicate; sodium sulfide and the like Alkali metal sulfides; alkali metal nitrates such as sodium nitrate; alkali metal phosphates such as sodium phosphate and sodium dihydrogen phosphate; alkali metal thiosulfates such as sodium thiosulfate;
These alkali metal salts can be used alone or in combination of two or more.

  Among these, the composition of the present invention contains at least one selected from the group consisting of alkali metal carbonates, alkali metal hydrogen carbonates, alkali metal sulfates, alkali metal halides, and alkali metal salts of boron. It is more preferable to contain at least one selected from the group consisting of sodium hydrogen carbonate, sodium sulfate and borax, and it is particularly preferable to contain sodium hydrogen carbonate, sodium sulfate and borax.

The blending amount of the alkali metal salt is usually 80 to 99.5% by weight, preferably 95 to 99% by weight.
When the cleaning composition of the present invention contains sodium bicarbonate, sodium sulfate and borax, the amount of sodium bicarbonate is preferably 10 to 35% by weight, particularly preferably 20%, based on the entire composition. To 30 wt%, and the blending amount of sodium sulfate is preferably 30 to 70 wt%, particularly preferably 40 to 60 wt%, based on the entire composition, and the blending amount of borax is the entire composition The content is preferably 10 to 35% by weight, particularly preferably 20 to 30% by weight.

It is preferable that the composition of the present invention further contains a silica-based desiccant.
The desiccant serves to stabilize the titer of the proteolytic enzyme and the lipolytic enzyme. Examples of the silica desiccant include silicia (porous fine powder silica).
The compounding quantity of a silica type desiccant is 0.01 to 1 weight% normally, Preferably it is 0.1 to 0.2 weight%.

Other components can be further added to the composition of the present invention as necessary.
Examples of other components include inorganic salts other than the alkali metal salts, fragrances, colorants, preservatives, antibacterial agents, viscosity-imparting agents, medicinal ingredients, and other additives that are usually used for cleaning agents.

  Examples of inorganic salts other than alkali metal salts include magnesium salts such as magnesium carbonate and magnesium sulfate; calcium salts such as calcium carbonate, calcium nitrate, calcium thiosulfate, and calcium hydrogen phosphate; alum; The blending amount of these inorganic salts can be appropriately determined within the range where the effects exerted by the microbubble cleaning composition of the present invention are not impaired.

Examples of the fragrances include abies oil, angelica oil, anise oil, balsam copaiba, basil oil, bay oil, bergamot oil, birch oil, rose wood oil, kayabute oil, cassia oil, acacia oil, cedarwood oil and camomil oil. , Cinnamon oil, cinnamon oil, citronella oil, elemi oil, eucalyptus oil, geranium oil, lava oil, cypress oil, lavandin oil, lavender oil, lemon oil, mint oil, neroli oil, nutmeg oil, oak moss oil, okotia oil, patchouli Essential oils such as oil, palmarosa oil, polai oil, rose oil, rosemary oil, sandalwood oil, vetiver oil, ylang ylang oil; limonene, terpinolene, p-cymene, 9-decenol, mugol, milsenol, borneol, vetiverol, t-butylcyclohexanol, anisole, anethole, Synthetic musks such as flor, citral, citronellal, cinnamic aldehyde, anisaldehyde, cyclamenaldehyde, citral, acetophenone, benzophenone, acetonaphthone, neron, nitromusk, geranyl acetate, bornyl acetate, phenylethyl acetate, myrceneyl acetate, methyl benzoate, cinnamon And synthetic fragrances such as methyl acid, methyl anthranilate, synthetic oak moss and coumarin.
The compounding quantity of a fragrance | flavor is 0 to 0.5 weight% normally, Preferably it is 0.1 to 0.3 weight%.

As the colorant, any of dyes, natural pigments, inorganic pigments and the like can be used.
Examples of the dye include Red No. 2, Red No. 3, Red No. 102, Red No. 104 (1), Red No. 105 (1), Red No. 106, Red No. 213, Red No. 227 and Red No. 230. (1), Yellow No. 4, Yellow No. 5, Yellow No. 201, Yellow No. 201 (1), Yellow No. 203, Daigo No. 205, Green No. 3, Green No. 201, Green No. 204, Blue No. 1, Blue No. 2, Blue No. 205, Purple No. 201, Brown No. 201 and the like.

  Examples of natural pigments include chlorophylls, gardenia, flavonoids, carotenoids, quinones, and riboflavins.

Examples of the inorganic pigment include titanium dioxide, talc, kaolin, mica, magnesium silicate, anhydrous silicic acid, calcium carbonate, and magnesium carbonate.
These colorants can be used alone or in combination of two or more.
The blending amount of the colorant is usually 0 to 0.5% by weight, preferably 0.1 to 0.2% by weight.

  Examples of the preservative include sodium benzoate, methyl paraoxybenzoate, ethyl paraoxybenzoate, propyl paraoxybenzoate, butyl paraoxybenzoate, isobutyl paraoxybenzoate, benzyl alcohol, and benzalkonium chloride.

  Examples of the viscosity-imparting agent include hydroxyethylcellulose, hydroxypropylmethylcellulose, methylcellulose, xanthan gum, polyethylene glycol distearate, polyethylene glycol monostearate and the like.

  The method for preparing the composition of the present invention is not particularly limited. For example, a mixture comprising the above-mentioned proteolytic enzyme, lipolytic enzyme, and other components as required is mixed with a known stirring device such as Barto mixer, Nauter mixer, universal mixing stirrer, ribbon mixer, V-shaped mixer, etc. It is possible to employ a method of preparing and preparing a powder body by uniformly mixing and stirring.

By using the composition of the present invention, it is possible to reliably remove sebum and proteins stuck to the article, mold generated therefrom, and the like in a short time.
Moreover, since the composition of the present invention has little irritation to humans, there is no problem even if it is touched, and it can be used with confidence.

  The usage-amount of the composition of this invention used for preparation of a washing | cleaning liquid is 1-10g normally with respect to 6-10 liters of water, Preferably it is 3-7g.

<Microbubble>
Microbubbles are fine bubbles having a diameter of 50 μm or less, and unlike normal bubbles, have a property of shrinking in water and disappearing (crushing). Microbubbles can be removed by a shock wave when crushing. Further, the microbubbles have negative ions, and are associated with dirt which is positive ions and disappearing in the water while floating, so that the dirt can rise to the water surface. When a cleaning liquid containing microbubbles is used for cleaning an article, since the microbubbles are fine, even if the article is in a complicated shape, it can reach the inside, and dirt and the like can be adsorbed and removed.

  In order to obtain a cleaning liquid containing microbubbles, a microbubble generator described later is usually used. Since water has a high surface tension, it is impossible to generate bubbles of 100 μm or less by ordinary bubbling.

  The microbubble generator is not particularly limited as long as it can generate microbubbles, and a known device can be used. For example, a device for generating microbubbles in a discharge port incorporating a venturi tube (a tube having a partially constricted structure) or an orifice plate (a donut-shaped plate having a hole in the center) (Japanese Patent Laid-Open No. 2006-116518) Gazette, Japanese Patent Application No. 2006-77553, etc.); an apparatus for generating a microbubble by discharging a liquid in which a gas is mixed into a main body pipe disposed in the liquid and causing it to collide with a collision wall disposed on the downstream side in the main body pipe (Japanese Patent Laid-Open No. 2005-334869); a device that generates microbubbles by blowing compressed air into water through a fine mesh member or a porous plate with a pneumatic source such as an air pump (Japanese Patent Laid-Open No. 2006-334869). No. 68631 etc.); an apparatus for generating microbubbles by creating a spiral water flow and shearing the air with this water flow (Japanese Patent Laid-Open No. 2003-126665) ); And the like. Among these, it is preferable to use the microbubble generator described in Japanese Patent Application No. 2006-77553.

<Washing method>
The cleaning method of the present invention is characterized by using a cleaning liquid containing the above-described composition of the present invention and microbubbles.
Specifically, an appropriate amount of the composition of the present invention is added to clean water (or warm water) to prepare a cleaning liquid, and the article is cleaned using a cleaning liquid containing microbubbles. .

As a method for cleaning an article using a cleaning liquid containing the composition of the present invention and microbubbles, for example,
(I) A cleaning liquid obtained by adding an appropriate amount of the composition of the present invention to clean water (or hot water) is placed in a container such as a tank. The cleaning liquid is introduced into the microbubble generator by an appropriate method, and the microbubble is contained in the cleaning liquid in the apparatus, and the cleaning liquid containing the microbubble is discharged from the shower nozzle toward the article to clean the article. Method,
(Ii) Put clean water (or warm water) into the washing tank and add an appropriate amount of the composition of the present invention to make a washing solution. Next, water containing microbubbles (or hot water) is sent into the cleaning liquid from a nozzle connected to the microbubble generator to prepare a cleaning liquid containing microbubbles, and the article is immersed in the cleaning liquid for cleaning. how to,
(Iii) In the method of (i), when the article is washed with the washing liquid containing the microbubbles discharged from the shower nozzle, the article is washed in or on the washing tank, and the washing liquid after washing is stored in a tank or the like. A method of cleaning the article so that it returns to the container (cleaning tank) (so that the cleaning liquid circulates),
Etc.

  In the case of adopting the method (iii), it is preferable that the cleaning liquid is circulated while passing through a filter while removing contaminants and the like from the viewpoint of efficient use of the cleaning liquid.

  Further, in the method (i), since it is not particularly necessary to install a washing tank, the washing of the article can be performed simply by discharging the washing liquid containing microbubbles from the shower nozzle toward the article in a sink or the like. It can be carried out.

More specifically, a method for cleaning an article using the apparatus shown in FIG. 1 will be described.
The cleaning apparatus shown in FIG. 1 includes a cleaning tank 20 for storing articles to be cleaned and a microbubble generator.

  An enlarged view of the microbubble generator is shown in FIG. A microbubble generator 10 shown in FIG. 2 includes a main body 1, a suction pipe 4 that transports cleaning liquid from the cleaning tank 20 into the main body 1, a filter unit 5 that removes dust and the like in the cleaning liquid, and a screw pump that sucks cleaning liquid and air. 12, an air filter 14 connected to the inlet 12a of the screw pump 12 via a check valve 13, a gas-liquid separator 15 for mainly discharging excess air to the outside, and transporting the cleaning liquid from the main body 1 to the cleaning tank 20. The discharge pipe 2 includes a nozzle unit 7 having an orifice plate for generating microbubbles, and a discharge port 8 that is disposed at the tip of the discharge pipe 2 and discharges a cleaning liquid containing microbubbles.

  First, water (or warm water) is put into the washing tank 20. Here, 5 to 6 g of the composition of the present invention is introduced into 5 to 10 liters of water in a washing tank and lightly stirred.

  Specifically, the cleaning composition used here is: Japanese borax: 25% by weight, sodium bicarbonate: 25% by weight, sodium sulfate: 50% by weight, pancreatin: 0.1% by weight, protin AC: Each component of 0.15% by weight, lipase: 0.5% by weight, cylicia: 0.15% by weight, fragrance: 0.2% by weight, and pigment: 0.12% by weight is stirred and mixed with a known stirring device. Prepared.

  Next, the tip of the suction tube 4 is installed at the bottom of the cleaning tank 20. By operating the screw pump 12, the cleaning liquid in the cleaning tank 20 is introduced from the suction pipe 4 through the filter unit 5 into the screw pump 12. At the same time, an appropriate amount of air is sucked into the screw pump 12 through the air filter 14.

  In the screw pump 12 into which the cleaning liquid and air are introduced, the bubbles are sheared and refined by the impeller rotating inside, whereby the air is dissolved in the cleaning liquid. The cleaning solution in which air is dissolved is discharged from the outlet 12 b of the screw pump 12 together with undissolved bubbles and sent to the gas-liquid separator 15. In the gas-liquid separator 15, dissolution of air into the cleaning liquid is further promoted, and undissolved air is discharged into the atmosphere from a relief valve 15 a installed at the upper part of the gas-liquid separator 15.

  The cleaning liquid in which a large amount of air is dissolved passes through the discharge pipe 2 from the gas-liquid separator 15 and is discharged from the discharge port 8 attached to the tip of the discharge pipe 2 sunk in the bottom of the side surface of the cleaning tank 20. Returned. The discharge port 8 may be connected via an introduction portion provided in advance on the side surface or bottom of the cleaning tank 20.

  A nozzle unit 7 is attached to the discharge port 8. A plurality of orifice plates are built in the nozzle unit 7 in series, and each time the cleaning liquid passes through the orifice plate, the cleaning liquid is compressed and expanded, and the air dissolved in the cleaning liquid in the process becomes microbubbles. Which occurs in the cleaning solution. Then, the cleaning liquid containing the microbubbles is discharged from the discharge port 8 into the cleaning tank.

  The cleaning tank from which the cleaning liquid containing microbubbles is discharged is filled with minute bubbles and appears to be clouded. Since microbubbles have low buoyancy, they do not immediately rise to the surface of the water but float in the water for a long time, so the effect lasts.

  When the cleaning liquid in the cleaning tank 20 is filled with microbubbles, the operation of the screw pump 12 may be stopped or the operation may be continued. The article is immersed in the cleaning tank 20.

  The time required for the cleaning is usually about 1 minute to several tens of minutes, preferably 5 to 10 minutes, although it depends on the type of the microbubble cleaning composition and the shape and size of the article.

  Although the temperature to wash | clean is not specifically limited, 20-40 degreeC is preferable from a viewpoint with which it is gentle to articles | goods and the outstanding cleaning effect is acquired. It is economical because it can exhibit sufficient detergency even at room temperature.

  In addition, you may provide a heater unit in the main body 1 of the microbubble generation | occurrence | production part 10, or the suitable place of the washing tank 20. FIG. The cleaning liquid is heated by the heater unit, and the temperature of the cleaning liquid in the cleaning tank 20 and the temperature of the cleaning liquid discharged from the discharge port 8 can be controlled to be a set appropriate temperature.

When the cleaning liquid containing microbubbles comes into contact with the article, first, the proteolytic enzyme and lipolytic enzyme in the cleaning composition of the present invention charged into the cleaning tank work effectively, sebum stuck to the surface of the article, etc. Is decomposed and removed. In addition, the microbubbles contained in the cleaning liquid bounce on the surface of the article and generate a pulse impact, and the attached dirt and the like can be effectively removed by this ultrafine vibration.
Furthermore, even in an article having a finely intricate shape, the microbubbles can easily enter the back of the gap, and the backside dirt can be effectively removed.

  According to the cleaning method of the present invention, there is no need to apply force with a brush, sponge, etc., so that the article is not damaged, and dirt in the back of the gap can be safely, securely and simply in a short time. Can be removed.

  Further, unlike the ultrasonic cleaning method, fine vibrations are not continuously generated and do not impact the article. Therefore, even if the watch band is washed, be careful not to remove the watch body from the band or immerse the watch body in the water tank if the watch is waterproofed daily. It is possible to immerse the entire wristwatch in a cleaning solution or to apply a cleaning solution containing microbubbles from a shower nozzle.

  Furthermore, when the glasses are cleaned by the ultrasonic cleaning method, the screw may be loosened due to fine vibrations. Since the screws of the glasses are small, they are easily lost when they are detached, but there is no such concern in the cleaning method of the present invention.

After washing, if necessary, gently wash the washing solution with water and dry it. In the cleaning method of the present invention, since no surfactant is used, there is almost no need to perform rinsing.
There are no particular restrictions on the drying method, and depending on the article, methods such as hot air drying, natural drying, and wiping off moisture with a cloth may be used.

  The fact that cleaning has been performed can be confirmed by observing the article with a microscope or the like by removing dirt and mold.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to the following Example.

Example 1
Using the apparatus shown in FIG. 1, an aqueous solution of a cleaning composition containing microbubbles was prepared, this aqueous solution was placed in a cup, and a metal watch band was immersed in the aqueous solution.

  The composition having the following composition was used as a microbubble cleaning composition containing a proteolytic enzyme and a lipolytic enzyme. The amount of the composition used was 5 to 6 g per 5 to 10 liters of hot water. The washing time was 5 minutes and the hot water temperature was 30 ° C.

<Cleaning composition>
Pharmacopeia borax: ca. 25% by weight, sodium bicarbonate: ca. 25% by weight, sodium sulfate: ca. 50 wt%, pancreatin: 0.1 wt%, protin AC: 0.15 wt%, lipase: 0.5 wt%, cylicia: 0.15 wt%, yellow colorant: trace amount

  FIG. 3 shows a photograph of the wristband being washed. Also, photographs of the aqueous solution of the cleaning composition containing microbubbles before and after washing the wristwatch shown in FIG. 3 are shown in FIGS. 5 and 6, respectively (color photographs of FIGS. 3, 5, and 6 are separately shown). hand in.). From the photograph in FIG. 6, it can be seen that the black dirt stuck to the back of the gap of the band after washing is removed by washing.

(Example 2)
Using the apparatus shown in FIG. 1, an aqueous solution of a cleaning composition containing microbubbles was prepared, and this aqueous solution was discharged from a shower nozzle to wash the wristwatch for about 5 minutes. A photograph of the state to be washed is shown in FIG. After washing, the black dirt stuck to the back of the gap between the bands was washed away (submit the color photograph in Fig. 4 separately).

DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Discharge pipe 4 ... Suction pipe 5 ... Filter unit 7 ... Nozzle unit 8 ... Discharge port 10 ... Micro bubble generation part 12 ... Screw pump 12a ... Screw pump inlet 12b ... Screw pump outlet 13 ... Check valve 14 ... Air filter 15 ... Gas-liquid separator 15a ... Relief valve 20 ... Washing tank

Claims (6)

Proteolytic enzyme, lipolytic enzyme, and at least one alkali metal salt selected from the group consisting of alkali metal carbonates, alkali metal hydrogen carbonates, alkali metal sulfates, alkali metal halides, and boron alkali metal salts A cleaning method for an article using a cleaning liquid containing a microbubble cleaning composition containing microbubbles, the microbubble cleaning composition containing a surfactant,
A cleaning liquid obtained by adding 1 to 10 g of the cleaning composition to 6 to 10 liters of water in clean water is introduced into a microbubble generator, and microbubbles are contained in the microbubble generator. The cleaning liquid containing bubbles is directed to the article and discharged from the shower nozzle to clean the article,
Into the clean water obtained by adding 1 to 10 g of the cleaning composition to 6 to 10 liters of water, water containing microbubbles is fed from a nozzle connected to a microbubble generator. A method for cleaning an article comprising preparing a cleaning liquid containing microbubbles and immersing the article in the cleaning liquid for cleaning.

  The cleaning method according to claim 1, wherein the cleaning method is for an article to which dirt is attached by contact with a human body.   2. A method for cleaning an article selected from the group consisting of accessories, glasses, wrist watch belts, fountain pens, nail clippers, bags, buttons, coins, medical instruments, lenses, tableware, toys and laboratory instruments. Or the cleaning method of 2.   The amount of proteolytic enzyme is 0.01 to 0.5% by weight with respect to the whole composition, and the amount of lipolytic enzyme is 0.1 to 1.0% by weight with respect to the whole composition. The cleaning method according to claim 1, wherein a certain microbubble cleaning composition is used. The washing | cleaning method in any one of Claims 1-4 which uses the composition for microbubble washing | cleaning whose compounding quantity of an alkali metal salt is 80 to 99.5 weight% with respect to the whole composition.   The washing | cleaning method in any one of Claims 1-5 whose temperature to wash | clean is 20-40 degreeC.

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