Method for deodorizing room having animal odor

Abstract

To provide a method for deodorizing a room having animal odor, enabling achievement of a sufficiently high deodorizing effect without subsequent re-generation of odor, while also reducing working time required for the deodorization treatment.SOLUTION: A method for deodorizing a room having animal odor, comprising the following steps: (1) a waste removal step of removing waste that includes at least one of bodily fluids, feces, and urine; (2) a step of spraying an alkaline detergent and washing; (3) an ozone fumigation step of spraying ozone into the room after step (2); (4) a step of spraying a weakly acidic detergent and washing; (5) an ozone fumigation step of spraying ozone into the room after step (4); and (6) an odor-preventive sheet covering step of heat-bonding a multilayer odor-preventive sheet having an odor-preventive layer and a heat-seal layer to locations where odor substances remain after the ozone fumigation step (5).SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a deodorizing method for a room having an animal odor. [Background technology]

[0002] In recent years, an increasing number of people are living with pets such as dogs and cats indoors as members of their families. However, there has been an increase in cases where pets are abandoned when they become too numerous to care for or when owners are unable to care for their pets due to personal circumstances. Rooms where pets are abandoned become soiled and emit a strong animal odor due to the decay of pet corpses, body fluids, excrement, etc. Furthermore, when owners who have kept pets indoors move, the room where the pet was kept becomes soiled and emits a strong animal odor due to the pet's body fluids, excrement, etc.

[0003] As mentioned above, rooms where pets have been kept indoors tend to become soiled with pet bodily fluids, excrement, etc., and emit a strong animal odor. In such cases, it is necessary to clean the room and thoroughly deodorize it to restore it to its original state.

[0004] Known methods for deodorizing a room that has an animal odor include cleaning up the waste in the room where animals have been left, spraying a weak alkaline and / or weak acidic liquid into the room, and fumigating with ozone, followed by repeating the spraying of the liquid and the fumigation with ozone (Patent Document 1).

[0005] However, the method of Patent Document 1 has an insufficient deodorizing effect, and in order to achieve a sufficient deodorizing effect, the liquid spraying work and the ozone fumigation work must be repeated until the odor in the room is no longer noticeable, which has the problem of taking a long time to complete (see paragraphs

[0122] ,

[0133] , and [Figure 2] of Patent Document 1). In addition, in many cases after the deodorizing work, there is a major problem in that the odor reoccurs within a few days to a few weeks. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 7122027 Summary of the Invention [Problem to be solved by the invention]

[0007] The object of the present invention is to provide a method for deodorizing a room having an animal odor, which solves the problems of the above-mentioned prior art, provides a sufficiently high deodorizing effect, prevents reoccurrence of odor, and shortens the working time for deodorizing work. [Means for solving the problem]

[0008] As a result of intensive research conducted by the inventors in order to achieve the above-mentioned object, the inventors have discovered that by heat-pressing a specific deodorizing sheet onto areas where odorous substances remain after the dirt removal process, alkaline detergent spray cleaning process, ozone fumigation process, weak acid detergent spray cleaning process, and ozone fumigation process, it is possible to effectively block odors caused by the remaining odorous substances, preventing the odor from re-emerging after the deodorizing process, and since there is no need to repeat the alkaline detergent spray cleaning process, ozone fumigation process, weak acid detergent spray cleaning process, and ozone fumigation process, the deodorizing process time can be significantly reduced. As a result of further research, the inventors have completed the present invention.

[0009] The present invention provides the following deodorizing method for a room having an animal odor.

[0010] 1. Deodorizing method for rooms with animal odors, including the following steps: (1) a waste removal step of removing waste including at least one of body fluids, feces, and urine; (2) A process of spraying and cleaning with alkaline detergent; (3) Ozone fumigation process in which ozone is sprayed into the room after step (2); (4) A process of spraying and cleaning with a weak acid detergent; (5) an ozone fumigation step in which ozone is sprayed into the room after step (4); (6) After the ozone fumigation process (5), a deodorizing sheet covering process is performed in which a multilayer deodorizing sheet having a deodorizing layer and a heat seal layer is heat-pressed onto the areas where odorous substances remain.

[0011] 2. The deodorizing method according to item 1 above, wherein a deodorizing agent is sprayed during the ozone fumigation step (3).

[0012] 3. The deodorizing method according to item 1 above, wherein a deodorizing agent is sprayed during the ozone fumigation step (5).

[0013] 4. The deodorizing method according to item 1, wherein the ozone fumigation steps (3) and (5) are carried out by exposing the room to ozone at a temperature of 18 to 30°C, a humidity of 60 to 100%, and an ozone concentration of 1 to 30 ppm.

[0014] 5. The deodorizing method according to item 1, further comprising the step of dismantling the area infiltrated with filth after the ozone fumigation step (5).

[0015] 6. The deodorizing construction method described in item 1 above, wherein the deodorizing layer of the multilayer deodorizing sheet used in the deodorizing sheet covering process is a layer consisting of at least one layer selected from the group consisting of an oriented nylon resin layer, a nylon resin layer, an oriented polyethylene terephthalate resin layer, and a polyethylene terephthalate resin layer.

[0016] 7. The deodorizing construction method according to item 6 above, wherein at least one layer selected from the group consisting of an oriented nylon resin layer, a nylon resin layer, an oriented polyethylene terephthalate resin layer, and a polyethylene terephthalate resin layer is a layer whose surface has been subjected to aluminum vapor deposition, a layer whose silica vapor deposition has been applied, or a layer whose aluminum oxide vapor deposition has been applied.

[0017] 8. The deodorizing construction method according to item 6 above, wherein at least one layer selected from the group consisting of an oriented nylon resin layer, a nylon resin layer, an oriented polyethylene terephthalate resin layer, and a polyethylene terephthalate resin layer is a layer whose surface is coated with an ethylene-vinyl alcohol copolymer resin, a polyvinyl alcohol resin, or a polyvinylidene chloride resin.

[0018] 9. The deodorizing construction method described in item 1 above, wherein the deodorizing layer of the multilayer deodorizing sheet used in the deodorizing sheet covering step is a layer formed by co-extrusion of nylon resin and ethylene-vinyl alcohol copolymer resin, or a layer formed by co-extrusion of nylon resin and metaxylylene adipamide resin.

[0019] 10. The deodorizing construction method described in item 1 above, wherein the heat seal layer of the multilayer deodorizing sheet used in the deodorizing sheet coating process is a linear low-density polyethylene resin layer, a low-density polyethylene resin layer, an ethylene-vinyl acetate copolymer resin layer, an ethylene-ethyl acrylate copolymer resin layer, an ethylene-acrylic acid copolymer resin layer, an ethylene-methyl methacrylate copolymer resin layer, an ethylene-methacrylic acid copolymer resin layer, or an ionomer resin layer.

[0020] 11. The deodorizing construction method according to item 1, wherein the multi-layer deodorizing sheet used in the deodorizing sheet covering step has a puncture strength of 10 N or more. [Effects of the Invention]

[0021] The deodorizing method of the present invention for a room having an animal odor has the following remarkable effects.

[0022] (1) After the soil removal process, alkaline detergent spray cleaning process, ozone fumigation process, weak acid detergent spray cleaning process, and ozone fumigation process are performed, a specific deodorizing sheet is heat-pressed onto the area where odorous substances remain. This very simple application process effectively blocks out odors caused by the remaining odorous substances, resulting in a sufficiently high deodorizing effect, and furthermore, odors do not reoccur after the deodorizing process.

[0023] (2) Due to the excellent deodorizing effect of (1) above, there is no need to repeat the alkaline detergent spray cleaning process, ozone fumigation process, weak acid detergent spray cleaning process, and ozone fumigation process, so the deodorizing work time can be significantly reduced.

[0024] (3) Therefore, according to the deodorizing method of the present invention, not only can the deodorizing effect of a room be excellent with a simple application procedure, but animal odors can be effectively eliminated with significantly reduced labor and cost, and in a short time, and the room can be suitably restored to its original state. Therefore, by being able to restore the room to its original state in this way, the utility value and asset value of the room can be easily maintained. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a cross-sectional view of an example of a multilayer deodorizing sheet used in the deodorizing construction method of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of another example of a multilayer deodorizing sheet used in the deodorizing construction method of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] Deodorizing method for rooms with animal odors The deodorizing method of the present invention for rooms with animal odors achieves a high deodorizing effect by sequentially carrying out a dirt removal process, an alkaline detergent spray cleaning process, an ozone fumigation process, a weak acid detergent spray cleaning process, an ozone fumigation process, and an odor-proof sheet covering process.

[0027] A room with an animal smell The type of room containing animal odors that is the target of deodorization using the deodorizing method of the present invention is not particularly limited, and includes various rooms such as homes, apartment buildings, stores, inns, restaurants, factories, warehouses, garages, etc. The material of the room to be deodorized is also not particularly limited, and it may be made of wood, concrete, etc. The size of the room to be deodorized is also not particularly limited, but the lower limit of the room area is, for example, 20 m 2 More than that, and another 50m 2 For example, the upper limit of the area of ​​a room is 300m 2 Below that, another 200m 2 The following rooms can be deodorized:

[0028] The types of animals include any animals kept as pets. Typical examples include, but are not limited to, dogs and cats. There are no particular limitations on the length of time the animals have been kept or abandoned. Whether the animals are alive or dead is not an issue. The period of time kept is usually one year or longer, and in many cases it is as long as ten years or longer.

[0029] The deodorizing method of the present invention will be explained below in the order of the steps of soil removal, alkaline detergent spray cleaning, ozone fumigation, weak acid detergent spray cleaning, ozone fumigation, and deodorizing sheet covering.

[0030] (1) Dirt removal process The waste removal process is a process for removing waste including one or more of animal body fluids such as saliva, blood, lymph, etc.; excrement such as feces and urine; hair, etc. By performing the waste removal process and removing the waste, it becomes possible to reliably deodorize rooms with animal odors in the subsequent weak alkaline liquid agent spraying process, ozone fumigation process, etc.

[0031] In the waste removal process, body fluids, excrement, hair, etc. adhering to floors, walls, fixtures, doors, windows, window frames, etc. are removed using tongs, scrapers, spatulas, etc. It is also desirable to remove all tatami mats, cushion flooring, wallpaper, etc. that have urine or other waste adhering to or soaked in them.

[0032] In the method of the present invention, a disinfectant spraying step can be carried out, if necessary, before the soil removal step. The disinfectant can be a liquid containing a disinfectant selected from stabilized chlorine dioxide, hypochlorous acid, and sodium hypochlorite, either singly or in combination. Spraying the disinfectant can effectively remove bacteria, viruses, and the like from the room, thereby preventing infectious diseases and contributing to deodorizing the room. Among the disinfectants, it is preferable to use a liquid containing sodium hypochlorite, as this is highly effective in removing bacteria, viruses, and the like from the room. In this case, the concentration of sodium hypochlorite is preferably 500 ppm or higher.

[0033] Furthermore, it is preferable to use a solution containing hydrogen peroxide, particularly a so-called accelerated hydrogen peroxide solution prepared by dissolving hydrogen peroxide, a surfactant, a solvent, an organic acid, phosphoric acid, etc. in water, as a disinfectant, since it can rapidly remove bacteria, viruses, etc. in a room. Accelerated hydrogen peroxide can remove bacteria and viruses by spraying or applying an undiluted solution containing about 0.5% by weight of hydrogen peroxide and leaving it for about 0.5 to 5 minutes. An example of an accelerated hydrogen peroxide solution is "Oxylite" (manufactured by C.B.S. Co., Ltd.).

[0034] Furthermore, following the disinfectant spraying step, ozone fumigation can be carried out as an odor suppression step, if necessary. Ozone fumigation is carried out by spraying ozone into the room using an ozone fumigation device. This ozone fumigation not only inactivates viruses but also temporarily suppresses odors, allowing workers to efficiently perform waste removal work, and also serves as a measure against neighboring areas. This ozone fumigation is preferably carried out after wiping off the disinfectant, which has strong oxidizing power. This ozone fumigation is preferably carried out by exposing the room to ozone at an ozone concentration of about 1 to 20 ppm for about 20 to 90 minutes.

[0035] In the present invention, a known ozone fumigation device can be used for ozone fumigation. Preferred ozone fumigation devices include ActivO-J (manufactured by Kai Corporation), Super Activo (manufactured by Kai Corporation), Panther-J (plasma ozone deodorizer, manufactured by Ecozone Co., Ltd.), and Ozone Cluster 1400 (ozone generator, manufactured by Earthwalker Trading Co., Ltd.).

[0036] (2) Alkaline detergent spray cleaning process The alkaline detergent spray cleaning process is a process in which an alkaline detergent is sprayed into the room after the soil removal process to clean it. The alkaline detergent may be in either liquid or powder form and is preferably diluted or dissolved in water before use. The alkaline detergent preferably has a pH in the range of approximately 8 to 12, and examples thereof include weak alkaline detergent solutions containing one or more of anionic surfactants, amphoteric surfactants, nonionic surfactants, sodium sesquicarbonate, and sodium bicarbonate. Cleaning can be performed by spraying the weak alkaline detergent and scrubbing with a deck brush, sponge, or the like to clean the room. For severe soiling, a strong alkaline detergent, such as a detergent containing sodium hydroxide with a pH of approximately 12 or higher, may be used in combination as needed. Furthermore, in areas of a room where a cat has been left unattended that have a strong odor, a detergent containing chlorine bleach can be used to clean and efficiently deodorize the area.

[0037] Furthermore, when spraying alkaline detergent for cleaning, the dirt can be efficiently cleaned by spraying high-pressure steam using a steam cleaner, such as a high-pressure steam device (manufactured by Karcher).

[0038] (3) Ozone fumigation process In the method of the present invention, an ozone fumigation step is carried out after (1) the dirt removal step and (2) the alkaline detergent spray cleaning step. The ozone fumigation step is a step in which ozone is sprayed into the room using an ozone fumigation device. By carrying out the ozone fumigation step after the dirt has been removed and the room has been cleaned, odorous components can be efficiently decomposed and removed.

[0039] In the method of the present invention, it is preferable to spray a deodorizer during the ozone fumigation step (3). This is because the combination of the deodorizer spray and the subsequent ozone fumigation can produce a synergistic deodorizing effect. Furthermore, it is preferable that the deodorizer is a liquid agent. Being a liquid agent allows the deodorizer to be efficiently sprayed or applied to floors, walls, etc.

[0040] The deodorizing agent is preferably sprayed as a weak alkaline solution such as an aqueous solution of sodium sesquicarbonate, baking soda, etc. onto the floor, walls, windows, ceiling, etc. of the room before the subsequent ozone fumigation. This neutralizes the acidic components contained in the feces and urine, effectively eliminating the odor.

[0041] Furthermore, the deodorizer may further comprise a liquid deodorizer containing at least one enzyme selected from protease, lipase, amylase, and cellulase. By spraying a deodorizer containing these enzymes followed by ozone fumigation, proteins, fats, starches, and fibers can be decomposed, resulting in efficient deodorization. Examples of deodorizers containing the enzymes include Granbioair (manufactured by Kai Corporation), Granbiopro (manufactured by Kai Corporation), and Sesquiplus (manufactured by Sekken Hyakka Co., Ltd.).

[0042] In this ozone fumigation step, it is preferable to spray ozone at a slightly higher temperature when the floor, wall, etc. are wet and humid due to cleaning during the alkaline detergent spray cleaning step or deodorizer spray, in order to improve deodorizing efficiency. Specifically, the humidity is preferably about 60 to 100%, more preferably about 70 to 100%. The temperature is preferably about 18 to 30°C, more preferably about 20 to 28°C. If temperature and humidity adjustment is required, an air conditioner, circulator, heater, humidifier, etc. can be used as appropriate.

[0043] The ozone fumigation step in this stage is preferably carried out by exposing to ozone at an ozone concentration of about 1 to 30 ppm. The ozone exposure time is usually preferably about 0.5 to 4 hours. The various ozone fumigation devices described above can be used for the ozone fumigation step.

[0044] (4) Weak acid detergent spray cleaning process The weak acid detergent spray cleaning process is a process of spraying a weak acid detergent into the room after the (3) ozone fumigation process to clean it. The weak acid detergent preferably has a pH in the range of about 1.5 to 4, and examples thereof include detergent solutions that are aqueous solutions containing acidic substances such as citric acid, surfactants such as anionic surfactants, amphoteric surfactants, and nonionic surfactants. The spraying of the weak acid detergent is preferably carried out by drying the room after the ozone fumigation process, spraying the weak acid detergent solution, and then cleaning using a steam cleaner or the like.

[0045] (5) Ozone fumigation process In the method of the present invention, an ozone fumigation step is further carried out after the (4) weak acid detergent spray cleaning step. The ozone fumigation step is a step in which ozone is sprayed into the room using an ozone fumigation device. By carrying out the ozone fumigation step at this stage, the odor can be efficiently decomposed and eliminated after the dirt has been removed and the room has been cleaned.

[0046] In the method of the present invention, it is preferable to spray a deodorizer during the ozone fumigation step (5). This is because the combination of the deodorizer spray and the subsequent ozone fumigation can produce a synergistic deodorizing effect. Furthermore, it is preferable that the deodorizer is a liquid agent. Being a liquid agent allows the deodorizer to be efficiently sprayed or applied to floors, walls, etc.

[0047] The deodorizing agent is preferably sprayed as a weak acidic solution containing an acidic substance such as citric acid onto the floor, walls, windows, ceiling, etc. of the room prior to the subsequent ozone fumigation, thereby neutralizing the alkaline components contained in the feces and urine and effectively deodorizing the room.

[0048] In this ozone fumigation step, it is preferable to spray ozone at a slightly higher temperature when the floor, wall, etc. are wet and humid due to cleaning during the weak acid detergent spray cleaning step or deodorizer spray, in order to improve deodorizing efficiency. Specifically, the humidity is preferably about 60 to 100%, more preferably about 70 to 100%. The temperature is preferably about 18 to 30°C, more preferably about 20 to 28°C. If temperature and humidity adjustment is required, an air conditioner, circulator, heater, humidifier, etc. can be used as appropriate.

[0049] The ozone fumigation step in this stage is preferably carried out by exposing to ozone at an ozone concentration of about 1 to 30 ppm. The ozone exposure time is usually preferably about 0.5 to 4 hours. The various ozone fumigation devices described above can be used for the ozone fumigation step.

[0050] In the method of the present invention, a dismantling process may be performed, if necessary, after the (5) ozone fumigation process. For example, if an animal repeatedly excretes urine or feces in the same place, such as a corner of a room or in a closet, due to its habit, the excrement, especially urine, may slip between the wall and the floor and penetrate into the concrete foundation, or if a large amount of urine penetrates the same place, such as gypsum board or plywood in a closet. The dismantling process is a process for dismantling the area where urine or other waste has penetrated. Specifically, the dismantling process involves removing wallpaper, baseboards, cushioned flooring, tatami mats, etc., followed by removal of floorboards, flooring, gypsum board, etc., to expose the surface of the room's pillars, beams, foundation, framework, etc. Furthermore, it is preferable to repeat the (2) alkaline detergent spray cleaning process, (3) ozone fumigation process, (4) weak acid detergent spray cleaning process, and (5) ozone fumigation process on the exposed area.

[0051] (6) Deodorizing sheet covering process (5) After the ozone fumigation step, or after the ozone fumigation step and the dismantling step, this is a step of covering areas where odorous substances remain by thermocompression bonding a multilayer odor-preventing sheet having an odor-preventing layer and a heat-sealing layer. By thermocompression bonding the multilayer odor-preventing sheet to areas where odorous substances remain, it is possible to reliably block odors caused by odorous substances originating from filth. Areas where odorous substances remain include areas where odorous substances remain or are likely to remain due to filth penetration into the floor, walls, pillars, foundations, etc. of a room.

[0052] Here, the materials of the building materials such as the floor, walls, pillars, beams, foundations, and framework of a room, which are the surfaces to which the multilayer deodorizing sheet is heat-pressed, are not particularly limited, and examples include concrete, wood, gypsum board, plastic, etc.

[0053] In the method of the present invention, it is important to apply a multilayer deodorizing sheet having a deodorizing layer and a heat-sealing layer to areas where odorous substances remain after the ozone fumigation step. That is, by performing the deodorizing sheet covering step, odors are reliably blocked, a sufficiently high deodorizing effect is obtained, and an excellent deodorizing effect is exhibited, in that odors do not reoccur after deodorizing work. Furthermore, because it is only necessary to apply the deodorizing sheet to specific areas by heat and pressure, the work time can be significantly reduced, and the work is simple and easy to perform.

[0054] The deodorizing sheet used in the method of the present invention is a multilayer deodorizing sheet having a film configuration with at least two layers: an deodorizing layer that suppresses odors by using a material with high fragrance retention and odor-resistant properties so that odors that have permeated into the adherend, such as a building material, are not released, and a heat-sealable layer that can be adhered to the adherend by heating and pressing, even if the surface of the building material, etc. is uneven. Such deodorizing sheets can be produced by known methods, such as dry lamination, which involves lamination using an adhesive, extrusion lamination, which involves lamination using a melted resin, or a processing method that combines these.

[0055] Figure 1 shows a cross-sectional view of an example of a multilayer deodorizing sheet used in the deodorizing application method of the present invention, with 1 indicating the deodorizing sheet, 2 indicating the deodorizing layer, and 3 indicating the heat-sealing layer. Figure 2 shows a cross-sectional view of another example of a multilayer deodorizing sheet used in the deodorizing application method of the present invention, with the deodorizing layer consisting of two layers: 1 indicating the deodorizing sheet, 2a indicating deodorizing layer I, 2b indicating deodorizing layer II, 2 indicating the deodorizing layer consisting of 2a and 2b, and 3 indicating the heat-sealing layer. In the multilayer deodorizing sheet used in the method of the present invention, the thickness of the deodorizing layer is typically about 10 to 100 μm, and the thickness of the heat-sealing layer is typically preferably about 20 to 150 μm.

[0056] The odor-preventing layer of the multilayer odor-preventing sheet used in the present invention also functions as a base layer, and is made of a resin layer with high odor-preventing properties and odor-resistant properties. For example, polyethylene terephthalate resin, nylon resin (polyamide resin), etc., whose molecular structure makes the resin component itself odor-resistant, can be used. The aroma-preventing properties of these resins can be enhanced by stretching them. Furthermore, the aroma-preventing properties (deodorizing effect) can be further enhanced by applying aluminum vapor deposition, silica vapor deposition, or aluminum oxide vapor deposition to the surface of these resin films.

[0057] Furthermore, the aroma retention (deodorizing effect) can be further enhanced by coating the surface of a layer such as an oriented nylon resin layer, an oriented polyethylene terephthalate resin layer, a nylon resin layer, or a polyethylene terephthalate resin layer with a resin having high aroma retention properties such as an ethylene vinyl alcohol copolymer resin, a polyvinyl alcohol resin, or a polyvinylidene chloride resin.

[0058] Furthermore, the deodorizing layer of the multilayer deodorizing sheet may be, for example, a layer formed by co-extrusion of nylon resin and ethylene vinyl alcohol copolymer resin, or a layer formed by co-extrusion of nylon resin and metaxylylene adipamide resin, which can also further enhance the fragrance retention (deodorizing effect).

[0059] Specific preferred examples of the odor-proof layer include a stretched nylon resin layer, a silica-deposited stretched nylon resin layer, an aluminum oxide-deposited stretched nylon resin layer, a polyvinylidene chloride-coated stretched nylon resin layer, a stretched polyethylene terephthalate resin layer, a silica-deposited stretched polyethylene terephthalate resin layer, an aluminum oxide-deposited stretched polyethylene terephthalate resin layer, and a polyvinylidene chloride-coated polyethylene terephthalate resin layer. The film may also be a laminated resin layer consisting of two or more resin layers selected from these resin layers. Examples of laminated resin layers consisting of two or more resin layers include a two-layer film consisting of a stretched polyethylene terephthalate resin layer and a stretched nylon resin layer, a two-layer film consisting of a silica or aluminum oxide vapor-deposited stretched polyethylene terephthalate resin layer and a stretched nylon resin layer, a three-layer film consisting of a polyvinylidene chloride-coated polyethylene terephthalate resin layer (two layers) and a stretched nylon resin layer, a co-extruded three-layer film in which an ethylene-vinyl alcohol copolymer resin is sandwiched between nylon resins, and a co-extruded three-layer film in which a metaxylylene adipamide resin is sandwiched between nylon resins.

[0060] The heat-seal layer of the multilayer deodorizing sheet used in the present invention is designed to conform to the uneven surface of the adherend, such as a building material, by melting the surface of the heat-seal layer where the deodorizing sheet contacts the adherend during heat-pressure bonding, applying pressure so that the heat-softened resin flows into the gaps in the uneven surface of the adherend, and as the resin temperature drops, it hardens and adheres to the adherend surface. Therefore, it is necessary to select a resin that has high fluidity when melted for the heat-seal layer. Examples of such heat-seal layers include linear low-density polyethylene resin layers; low-density polyethylene resin layers; ethylene-vinyl acetate copolymer resin layers, ethylene-ethyl acrylate copolymer resin layers, ethylene-acrylic acid copolymer resin layers, ethylene-methyl methacrylate copolymer resin layers, ethylene-methacrylic acid copolymer resin layers, and ionomer resin layers, among other ethylene copolymer resin layers. The ionomer resins are prepared by reacting metal ions, such as sodium ions, with ethylene-methacrylic acid copolymer resins to partially crosslink them via ionic bonds.

[0061] Furthermore, since the adherend surface is uneven during the heat-pressure bonding process, it is desirable for the multilayer deodorizing sheet to have high puncture strength so that the film does not tear during pressure bonding. Specifically, the puncture strength of the multilayer deodorizing sheet used in the deodorizing sheet covering process is usually preferably about 10 N or more.

[0062] Furthermore, the multilayer deodorizing sheet used in the deodorizing sheet covering process exhibits excellent adhesion to the surface of the adherend because the resin of the heat-seal layer flows into the gaps in the uneven surface of the adherend and hardens to adhere, so it usually does not peel off after deodorizing treatment, causing odors to re-emit. The adhesion strength of the multilayer deodorizing sheet used in the deodorizing sheet covering process is not particularly limited and will vary depending on the material and surface condition of the adherend, but for example, when the adherend is made of wood and is flat, it is usually preferable that it be about 3 N / 15 mm or more.

[0063] When a multilayer deodorizing sheet is heat-pressed to an adherend, it is preferable to clean the adherend surface to enhance adhesion of the deodorizing sheet. For example, if cushion flooring (CF) has been removed, it is preferable to remove the adhesive portion of the CF from the adherend surface and then polish the surface. Furthermore, if the adherend is concrete, it is preferable to heat the adherend surface using a heat gun. Next, the deodorizing sheet is placed on the adherend surface so that it is in close contact with the adherend surface and prevents air from entering, and then heat-pressed using an iron or the like at a temperature of typically about 140°C to 240°C so that the heat-seal layer melts and adheres to the adherend surface.

[0064] Thus, the deodorizing method of the present invention for a room having an animal odor can be carried out with simple application work in a short time, and can provide an excellent deodorizing effect. [Example]

[0065] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples in any way.

[0066] The deodorizing application environment and the multilayer deodorizing sheets used in each example are as follows:

[0067] Deodorizing environment for rooms with animal odors and odor monitoring method Using the indoor environment IoT sensor pod "POD2" (manufactured by AnalyticSense, Inc.), the temperature, humidity, ozone (O3) concentration, hydrogen sulfide (H2S) concentration, and ammonia (NH3) concentration of the room where deodorization was being performed were monitored from the start to the end of the treatment. Of these, hydrogen sulfide (H2S) concentration and ammonia (NH3) concentration were used as indicators of room odor. With "POD2," each of the above items can be constantly monitored using a smartphone app in a Wi-Fi environment.

[0068] Multi-layer deodorizing sheet In Example 1, a two-layer deodorizing sheet A was used as the multi-layer deodorizing sheet, in which the deodorizing layer 2 was a 50 μm thick stretched polyethylene terephthalate resin layer and the heat-sealable layer 1 was a 50 μm thick ethylene-vinyl acetate copolymer resin layer, as shown in Figure 1. The puncture strength of this two-layer deodorizing sheet A was 22.8 N.

[0069] In Example 2, a three-layer deodorizing sheet B was used as the multilayer deodorizing sheet, in which the deodorizing layer 2a was a 12 μm thick stretched polyethylene terephthalate resin layer, the deodorizing layer 2b was a 15 μm thick stretched nylon resin layer, and the heat-sealable layer 1 was an 80 μm thick linear low-density polyethylene resin layer, as shown in Figure 2. The puncture strength of this three-layer deodorizing sheet B was 15.5 N.

[0070] Example 1 Case 1 (Deodorizing treatment in a room where a dog was kept) The room (house) targeted for deodorization was a 35m2 room where an elderly woman had been keeping two toy poodles for six years. 2The tenant was unable to live independently in a 1DK rental apartment and had left the house to live in a facility. After the dog was rescued, the tenant's son, who was the guarantor, requested deodorization. Due to the tenant's advanced age, the dog had not been well cared for, and the dog had left the entire room, resulting in a very strong smell of urine and feces, which had seeped into the wallpaper and other surfaces, creating a terrible condition. The layout consisted of a Western-style room, kitchen, bathroom, and toilet.

[0071] Condition at the start of deodorization work The moment I opened the room, I was hit with a strong smell of urine and feces. The Western-style room, kitchen, dressing room, and toilet were all furnished with cushioned flooring, but there were urine stains in every room, and in some places feces were still there. Before the deodorizing treatment, the odors measured in every position in the Western-style room and kitchen were 1.5-2.5 ppm for hydrogen sulfide and 2.1-2.7 ppm for ammonia, making it impossible to breathe normally.

[0072] (1) Disinfection process, odor suppression process, and waste removal process The disinfectant solution was "Oxylite" (manufactured by C.B.S. Co., Ltd.), and 1.5 liters of the undiluted solution (0.5% accelerated hydrogen peroxide) was sprayed mainly on the floor of the room, left for 5 minutes, and then wiped up. The disinfection process was then carried out by spraying 7500 mg / hr of ozone for approximately 60 minutes using an ozone fumigation device, Panther-J (manufactured by Kai Corporation), to break down the odor and make the work easier. The odor suppression process was carried out by spraying 7500 mg / hr of ozone for approximately 60 minutes. The ozone concentration was 4-6 ppm.

[0073] Next, tongs and a scraper were used to remove the dirt, such as body fluids, excrement, and hair, that had adhered to the floor and walls, and then all of the cushioned flooring that had been soaked with urine was peeled off and removed, completing the dirt removal process.

[0074] (2) Alkaline detergent spray cleaning process An alkaline detergent solution was sprayed onto the floor (the foundation beneath the cushioned flooring was plywood), baseboards, walls, etc., and then a deck brush and sponge were used to clean away any adhering dirt or soaked urine. Areas with a strong odor were further cleaned using a steam cleaner after spraying with the detergent solution. The alkaline detergent solution used was the kitchen detergent "Joy" (manufactured by P&G Japan LLC) (a weak alkaline solution containing sodium alkyl ether sulfate, alkylamine oxide, etc.), diluted five times with water. The amount sprayed was around 3 liters.

[0075] (3) Ozone fumigation process After cleaning with alkaline detergent, a weak alkaline deodorizer (aqueous solution of sodium sesquicarbonate) was sprayed over the entire room (floor, walls, ceiling, etc.) to neutralize the acidic components contained in the feces and urine. After spraying the deodorizer, the floor, walls, etc. were left damp, and a humidifier was installed and one circulator was operated in each room to maintain a temperature of 26-28°C and a humidity of 70% or higher. An ozone fumigation device, Panther-J (manufactured by Kai Corporation), was used to spray 7500 mg / hr of ozone for approximately 90 minutes, maintaining the ozone concentration at 6-8 ppm.

[0076] (4) Weak acid detergent spray cleaning process After the ozone fumigation process, the room was dried, and a weakly acidic detergent solution was sprayed onto the floor, walls, etc., followed by cleaning using a steam cleaner. The acidic detergent solution used was bathroom cleaner "Scale Cut P" (manufactured by Yokohama Oil & Fat Industries Co., Ltd.) (a weakly acidic solution containing citric acid, anionic surfactants, nonionic surfactants, etc.), diluted 10 times with water. The spray volume was 2 liters.

[0077] (5) Ozone fumigation process After the weak acid detergent spray cleaning process, a weak acid deodorizer (citric acid aqueous solution) was sprayed over the entire room (floor, walls, ceiling, etc.) to neutralize the alkaline components contained in the feces and urine. After spraying the deodorizer, while the floor and walls were still damp, a humidifier was installed, and one circulator was operated in each room to maintain a temperature of 26-28°C and a humidity of 70% or higher. An ozone fumigation device, Panther-J (manufactured by Kai Corporation), was used to spray 7500 mg / hr of ozone for approximately 90 minutes, maintaining the ozone concentration at 6-8 ppm, for ozone fumigation.

[0078] (6) Deodorizing sheet covering process After ventilating for about 20 minutes, we closed the entrance and all windows, then all the doors to the rooms to prevent the smell from spreading in the wind.We then checked in each room to see if any smells were coming from the foundation (plywood) below where the cushioned flooring had been removed, or from the plasterboard areas where the plywood and wall (plasterboard) met vertically, and applied anti-odor sheets to any areas where a smell remained.

[0079] Specifically, before applying the deodorizing sheet, the odorous area was heated with a heat gun (at 300°C) for approximately three minutes to remove moisture after cleaning and to improve the adhesiveness of the deodorizing sheet. Next, the heat-sealed surface of the two-layer deodorizing sheet A (45cm x 45cm) was pressed tightly against the area where the odor remained, preventing air from getting in, and the sheet was then heated and pressed with an iron (at 220°C) for approximately two minutes per sheet, while pressing the entire surface. In this example, seven deodorizing sheets were used in three areas of the Western-style room, and eight sheets were used in four areas of the kitchen. Adjacent areas of the deodorizing sheets were partially overlapped and heated and pressed together. This deodorizing sheet coverage completely prevented odors from rising.

[0080] Odor status after deodorization work was completed After the deodorization work was completed, the odors were 0 ppm for hydrogen sulfide and 0 ppm for ammonia. In addition, there was no animal odor whatsoever.

[0081] Odor status one month after deodorization work was completed One month after the deodorizing treatment, the odor levels were 0 ppm for hydrogen sulfide and 0 ppm for ammonia. In addition, no animal odor was detected at all.

[0082] Example 2 Case 2 (Deodorizing treatment for a room where a cat was kept) The room (house) targeted for deodorization was a 90m2 room where a couple lived. 2 Four cats had been kept for eight years in a 3LDK condominium. The cats were kept in one Western-style room, but they were abandoned and no one took care of their excrement, causing the room to become dirty. The couple decided to move out of the apartment, and the four cats were taken away by the health center. In order to sell the apartment, it was deemed too poor to be appraised without the removal of feces and deodorization work, so we were asked to carry out deodorization work.

[0083] Condition at the start of deodorization work When I entered the house, I could clearly smell cat urine. When I entered the room where the cat was kept, immediately to the left after entering the entrance, I was hit by a strong smell of cat urine that made it difficult to breathe. There was also feces, but the distinctive smell of cat urine was strong. There was no leftover property, but there were several urine stains on the walls, and urine remained in some areas of the flooring like puddles. Before the deodorizing treatment, the odors measured from any position in the room were 1.5-2.5 ppm for hydrogen sulfide and 2.0-3.0 ppm for ammonia.

[0084] (1) Dirt removal process The smell was so strong that I put on a face mask and protective clothing. I wiped up the urine that had accumulated on the floor, and removed the feces and dried urine residue using tongs and a spatula, then used a wet / dry vacuum cleaner. Then, because the smell was so strong, I removed all the wallpaper from the room, and marked any traces of urine that had soaked into the plasterboard with a permanent marker so that they could be seen even after cleaning. I was able to remove the source of the smell to the point that it was no longer visible to the naked eye.

[0085] (2) Alkaline detergent spray cleaning process An alkaline detergent solution made by diluting kitchen detergent "Joy" (manufactured by P&G Japan LLC) (containing sodium alkyl ether sulfate, alkylamine oxide, etc., and is weakly alkaline) five times with water was sprayed onto floors, walls, etc., and then a deck brush and sponge were used to clean away any adhering dirt or soaked urine. The amount sprayed was 2 liters.

[0086] Furthermore, urine that had soaked into the gypsum board was removed by spraying an alkaline detergent solution of "Kitchen Bleach" (manufactured by Kaneyo Soap Co., Ltd.) (alkaline, containing sodium hypochlorite, alkylamine oxide, and sodium hydroxide) diluted twice with water, allowing it to soak in, and then cleaning it using a steam cleaner. This was repeated until the urine odor disappeared from the steam. The amount sprayed was 3 liters.

[0087] (3) Ozone fumigation process After cleaning with alkaline detergent, a weak alkaline deodorizer (aqueous solution of sodium sesquicarbonate) was sprayed over the entire room (floor, walls, ceiling, etc.) to neutralize the acidic components contained in feces and urine. After spraying the deodorizer, the floor, walls, etc. were left damp, and an ozone fumigation device, Ozone Cluster 1400 (manufactured by Earthwalker Trading Co., Ltd.), was installed. The temperature was kept at 24-26°C, a humidifier was installed, and one circulator was operated to maintain humidity at 70% or higher. Ozone fumigation was performed by spraying 1400 mg / hr of ozone for approximately 90 minutes, maintaining the ozone concentration at 5-7 ppm.

[0088] (4) Weak acid detergent spray cleaning process After the ozone fumigation process, the room was dried, and a weakly acidic detergent solution was sprayed onto the floor and walls, followed by cleaning using a steam cleaner. The acidic detergent solution used was bathroom cleaner "Scale Cut P" (manufactured by Yokohama Oil & Fat Industries Co., Ltd.) (a weakly acidic solution containing citric acid, anionic surfactants, nonionic surfactants, etc.), diluted 10 times with water. This was repeated several times until the odor disappeared from the steam from the steam cleaner. The spray volume was 3 liters.

[0089] (5) Ozone fumigation process After the weak acid detergent spray cleaning process, a weak acid deodorizer (citric acid solution) was sprayed over the entire room (floor, walls, ceiling, etc.) to neutralize the alkaline components contained in the feces and urine. After spraying the deodorizer, the floor, walls, etc. were left damp. A humidifier was installed and one circulator was operated to maintain a temperature of 24-26°C and humidity of 70% or higher. An ozone fumigation device, Ozone Cluster 1400 (manufactured by Earthwalker Trading Co., Ltd.), was used to spray 1400 mg / hr of ozone for approximately 150 minutes, maintaining the ozone concentration at 7-9 ppm, for ozone fumigation.

[0090] (6) Dismantling process and deodorizing sheet covering process After ozone fumigation, the room was ventilated and the odor was checked, but the smell of urine still lingered. When the odor was measured, it was found to be 0.3 ppm for hydrogen sulfide and 0.8 ppm for ammonia, indicating that the smell of cat urine had not yet permeated the flooring. As there was a possibility that urine was leaking into the foundation below through the gap between the wall and flooring, the flooring was dismantled and removed using an electric saw. This revealed that the urine had seeped into the concrete below the floor. Furthermore, the joists and beams had also soaked in urine, so these were dismantled and removed using an electric saw. The urine stain that had soaked into the exposed concrete was approximately 2m long. 2 Therefore, the exposed concrete surface was subjected to the following steps once again: (2) alkaline detergent spray cleaning process, (3) ozone fumigation process, (4) weak acid detergent spray cleaning process, and (5) ozone fumigation process. Then, the demolition process was carried out.

[0091] After the ozone fumigation process, the room was ventilated for about 20 minutes, and then the entrance and windows were closed, followed by all the doors to the rooms to prevent the smell from spreading due to the wind.Then, an odor check was carried out by holding the nose close to the concrete that had been soaked with urine.A slight odor remained, so it was decided to apply an odor-proofing sheet to the area where the odor remained.

[0092] Specifically, before applying the deodorizing sheet, the surface was heated with a heat gun (at 300°C) for about three minutes to remove moisture after cleaning and to improve the adhesiveness of the deodorizing sheet. Next, the heat-sealed surface of the three-layer deodorizing sheet B (45cm x 45cm) was pressed tightly against the surface, taking care not to let air in, to thoroughly cover the area where the odor remained, and then heated and pressed with an iron (at 220°C) for about two minutes per sheet, while pressing the entire surface. In this example, 12 deodorizing sheets were used on the concrete surface. In areas where deodorizing sheets were adjacent, the sheets were partially overlapped and heated and pressed together. This deodorizing sheet coverage completely prevented odors from rising.

[0093] Odor status after deodorization work was completed After the deodorization treatment, the odors were 0 ppm for hydrogen sulfide and 0 ppm for ammonia. In addition, there was no animal odor at all.

[0094] Odor status one month after deodorization work was completed One month after the deodorizing treatment, the odor levels were 0 ppm for hydrogen sulfide and 0 ppm for ammonia. In addition, no animal odor was detected at all. [Industrial Applicability]

[0095] The deodorizing method of the present invention is highly effective in deodorizing rooms that have animal odors and can favorably restore the room to its original state, so it is suitable for use in deodorizing rooms that have animal odors.

Claims

1. Deodorizing method for rooms with animal odors, including the following steps: (1) a waste removal step of removing waste containing at least one of body fluids, feces, and urine; (2) a step of spraying and cleaning with an alkaline detergent; (3) an ozone fumigation step of spraying ozone into the room after step (2); (4) A step of spraying and cleaning with a weak acid detergent; (5) an ozone fumigation step of spraying ozone into the room after step (4); (6) After the ozone fumigation step (5), an odor-preventing sheet covering step is performed in which a multilayer odor-preventing sheet having an odor-preventing layer and a heat-sealing layer is heat-pressed onto the areas where odorous substances remain.

2. 2. The deodorizing method according to claim 1, wherein a deodorizing agent is sprayed during the ozone fumigation step (3).

3. 2. The deodorizing method according to claim 1, wherein a deodorizing agent is sprayed during the ozone fumigation step (5).

4. 2. The deodorizing method according to claim 1, wherein the ozone fumigation steps (3) and (5) are carried out by exposing the room to ozone at a temperature of 18 to 30°C, a humidity of 60 to 100%, and an ozone concentration of 1 to 30 ppm.

5. 2. The deodorizing method according to claim 1, further comprising the step of dismantling the area in which the filth has penetrated after the ozone fumigation step (5).

6. 2. The deodorizing construction method according to claim 1, wherein the deodorizing layer of the multilayer deodorizing sheet used in the deodorizing sheet covering process is a layer consisting of at least one layer selected from the group consisting of an oriented nylon resin layer, a nylon resin layer, an oriented polyethylene terephthalate resin layer, and a polyethylene terephthalate resin layer.

7. 7. The deodorizing construction method according to claim 6, wherein at least one layer selected from the group consisting of an oriented nylon resin layer, a nylon resin layer, an oriented polyethylene terephthalate resin layer, and a polyethylene terephthalate resin layer is a layer whose surface has been subjected to aluminum vapor deposition, silica vapor deposition, or aluminum oxide vapor deposition.

8. 7. The deodorizing construction method according to claim 6, wherein at least one layer selected from the group consisting of an oriented nylon resin layer, a nylon resin layer, an oriented polyethylene terephthalate resin layer, and a polyethylene terephthalate resin layer is a layer whose surface is coated with an ethylene-vinyl alcohol copolymer resin, a polyvinyl alcohol resin, or a polyvinylidene chloride resin.

9. 2. The deodorizing construction method according to claim 1, wherein the deodorizing layer of the multilayer deodorizing sheet used in the deodorizing sheet coating process is a layer formed by co-extrusion of nylon resin and ethylene vinyl alcohol copolymer resin, or a layer formed by co-extrusion of nylon resin and metaxylylene adipamide resin.

10. 2. The deodorizing construction method according to claim 1, wherein the heat seal layer of the multilayer deodorizing sheet used in the deodorizing sheet coating process is a linear low-density polyethylene resin layer, a low-density polyethylene resin layer, an ethylene-vinyl acetate copolymer resin layer, an ethylene-ethyl acrylate copolymer resin layer, an ethylene-acrylic acid copolymer resin layer, an ethylene-methyl methacrylate copolymer resin layer, an ethylene-methacrylic acid copolymer resin layer, or an ionomer resin layer.

11. 2. The deodorizing method according to claim 1, wherein the multilayer deodorizing sheet used in the deodorizing sheet covering step has a puncture strength of 10 N or more.

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