JP6757930B2 - How to regenerate interior materials - Google Patents

Description

The present invention relates to a method for regenerating an interior material.

The ceiling or wall of the building will be decorated with interior materials. As such an interior material, an interior cloth made of vinyl chloride, cloth woven fabric, or the like is widely used because of its excellent aesthetic appearance. However, the interior cloth gradually becomes dirty due to natural deterioration or the generation of cigarette smoke, oil smoke, soot or mold. Therefore, when the dirt becomes noticeable, the dirty interior cloth is usually peeled off and replaced with a new interior cloth.

However, when the interior cloth is replaced in this way, the replacement work takes a long time or the cost is very high. Therefore, a method for regenerating an interior material that regenerates an interior cloth by washing has been proposed. Alternatively, a method of painting an interior material has been proposed in which the interior cloth is painted to restore the aesthetic appearance.

According to Japanese Patent No. 3261499 (Patent Document 1), in a method for regenerating an interior material attached to a ceiling or a wall, a cleaning treatment liquid is sprayed on the surface of the interior material, and the cleaning treatment liquid is sprayed on the surface of the interior material. A technique is disclosed in which the surface of a material is physically cleaned and the surface of the physically cleaned interior material is rinsed with water.

According to Japanese Patent No. 5393720 (Patent Document 2), the interior material for the wall attached to the inner wall of the building or the interior material for the ceiling attached to the ceiling of the building is painted to restore the aesthetic appearance. In the method of coating a material, a technique of applying a water-based paint to the surface of an interior material for a wall or an interior material for a ceiling is disclosed.

Japanese Patent No. 3261499 Japanese Patent No. 5393720

For example, in the technique described in Patent Document 1, stains on the interior cloth made of vinyl chloride, cloth, or the like can be easily removed, and the interior cloth can be regenerated so as to exhibit a good appearance. ..

However, if the surface of the interior material (interior cloth) has a high degree of dirt, or if the interior material has a high degree of surface dirt and the interior material has a low degree of surface dirt. , Dirt adhering to the surface of the interior material cannot be easily removed, and the interior material cannot be regenerated so as to exhibit a good appearance.

An object of the present invention is that the surface of the interior material has a high degree of dirt, or even if a portion of the interior material having a high degree of surface contamination and a portion of the interior material having a low degree of surface contamination are mixed. It is to provide a technology that can reproduce interior materials so as to exhibit a good appearance.

A brief description of typical inventions disclosed in the present application is as follows.

The method for regenerating the interior material according to the embodiment of the present invention is a method for regenerating the interior material attached to the ceiling or the inner wall, wherein an alkaline cleaning treatment liquid is applied to the surface of the interior material (a). ) And after step (a), leave the interior material in a state where the cleaning treatment liquid is applied to the surface of the interior material (b) and after step (b), on the surface of the interior material, It has a step (c) of applying a first neutralizing treatment liquid for neutralizing the cleaning treatment liquid and performing a cleaning treatment on the surface of the interior material.

Further, the method for regenerating the interior material according to the embodiment of the present invention is a method for regenerating the interior material attached to the ceiling or the inner wall, wherein the degree of dirt on the surface of the first portion of the interior material is determined. The degree of stain on the surface of the second part of the interior material, which is different from that of the first part, is higher than that of the interior material. After that, the surface of the first part and the surface of the second part are coated with an alkaline cleaning treatment solution (b), and after the step (b), the surface of the first part and the second part. The surface is coated with a neutralizing solution for neutralizing the cleaning solution, and the surface of the first portion and the surface of the second portion are cleaned (c).

Among the inventions disclosed in the present application, the effects obtained by typical ones will be briefly described as follows.

According to a typical embodiment of the present invention, a portion of the interior material having a high degree of surface contamination, or a portion of the interior material having a high degree of surface contamination and a portion of the interior material having a low degree of surface contamination. Even if they are mixed, the interior material can be regenerated so as to exhibit a good aesthetic appearance.

It is a flow chart which shows an example of a part step of the method of regenerating the interior material of an embodiment. It is a figure which shows the room which performs the process of regenerating the interior material of embodiment. It is a perspective view which shows the coating tool used in the method of regenerating the interior material of embodiment. It is a flow chart which shows an example of a part step of the method of regenerating the interior material of an embodiment. It is a flow chart which shows an example of a part step of the method of regenerating the interior material of an embodiment. It is a figure which shows the locus of movement of the coating tool at the time of performing the process of regenerating the interior material of embodiment. It is a figure which shows the locus of movement of the coating tool at the time of performing the process of regenerating the interior material of embodiment. It is a flow figure which shows a part step of the method of regenerating the interior material of the 1st modification of embodiment. It is a flow figure which shows a part step of the method of regenerating the interior material of the 2nd modification of embodiment. It is a flow chart which shows a part step of the method of regenerating the interior material of the 3rd modification of embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in all the drawings for explaining the embodiment, in principle, the same reference numerals are given to the same parts, and the repeated description thereof will be omitted.

(Embodiment)
<How to regenerate interior materials>
Hereinafter, a method for regenerating the interior material (interior cloth) according to the embodiment of the present invention will be described. The method for regenerating the interior material of the present embodiment is, for example, a method for regenerating the interior material attached to the ceiling or the inner wall of a plurality of rooms of an apartment house having a plurality of dwelling units.

FIG. 1 is a flow chart showing an example of a part of steps of the method of regenerating the interior material of the embodiment. FIG. 2 is a diagram showing a room in which the interior material recycling process of the embodiment is performed. FIG. 3 is a perspective view showing a coating tool used in the method for regenerating the interior material of the embodiment. 4 and 5 are flow charts showing an example of a part of the steps of the method of regenerating the interior material of the embodiment. 6 and 7 are diagrams showing the locus of movement of the coating tool when the interior material recycling step of the embodiment is performed. 2, 6 and 7 are central projection views of a room in which the interior material recycling process of the embodiment is performed, as viewed from one wall side.

Hereinafter, an example shown in FIG. 1 will be described as an example as a method for regenerating the interior material of the present embodiment. Further, as shown in FIG. 2, the method of regenerating the interior material of the present embodiment illustrated in FIG. 1 is an interior material 4 attached to the ceiling 1 or the inner wall 2 of a room having a ceiling 1, an inner wall 2 and a floor 3. Is to be regenerated.

In the process of regenerating the interior material shown in FIG. 1, first, the dust on the surface of the interior material 4 (see FIG. 2), that is, the dust adhering to the surface of the interior material 4, is removed, and the degree of dirt on the surface of the interior material 4 is removed. (Step S1 in FIG. 1).

The specific method for removing dust in step S1 is not particularly limited, but for example, the surface of the interior material 4 can be brushed (physically cleaned).

Further, in this step S1, when removing dust, for example, the degree of dirt on the surface of the interior material 4 is visually evaluated. As a result, for example, the order of the ceiling or inner wall in which the cleaning treatment liquid is applied to the surface of the interior material attached to the ceiling or inner wall of a plurality of rooms of an apartment house having a plurality of dwelling units before the work is performed. Can be attached. By ranking the ceilings or inner walls to be worked on, even when a plurality of workers perform the work, the order of the ceilings or inner walls to be worked on is not mistaken among the plurality of workers. You can work efficiently.

If no dust is attached to the surface of the interior material 4, the work of removing the dust can be omitted in step S1 and only the work of evaluating the degree of the surface of the interior material 4 can be performed.

Further, in this step S1, for example, by attaching a curing tape to an outlet plate or the like, the area of the ceiling 1 (see FIG. 2) or the inner wall 2 (see FIG. 2) where the cleaning treatment liquid does not need to be applied is cured. You may.

In the step of regenerating the interior material shown in FIG. 1, next, a bleaching treatment liquid is applied to the surface of the interior material 4 (see FIG. 2) (step S2 in FIG. 1). In step S2, the surface of the interior material 4 is subjected to a so-called pre-bleaching treatment, in which a bleaching treatment liquid is applied and bleached in advance before the cleaning treatment liquid is applied.

As a result of evaluating the degree of dirt on the surface of the interior material 4 in step S1, as shown in FIG. 2, the degree of dirt on the surface of the partial PR1 of the interior material 4 is different from that of the partial PR1 of the interior material 4. Therefore, it is assumed that it is evaluated to be higher than the degree of dirt on the surface of the partial PR2 arranged below the partial PR1. That is, it is assumed that the degree of dirt on the surface of the upper portion PR1 of the interior material 4 is evaluated to be higher than the degree of dirt on the surface of the lower portion PR2 of the interior material 4. In such a case, in step S2, the bleaching treatment liquid is applied to the surface of the upper portion PR1 of the interior material 4, but the bleaching treatment liquid is not applied to the surface of the lower portion PR2 of the interior material 4.

When the entire surface of the interior material 4 is contaminated by stains that discolor the surface of the interior material 4, such as cigarette tar stains, the surface of the upper portion PR1 of the interior material 4 and the interior material 4 There may be a difference in the degree of discoloration with the surface of the lower portion PR2. In such a case, when the cleaning treatment liquid is applied to the surface of the interior material 4 as usual to perform the cleaning treatment, the surface of the upper portion PR1 of the interior material 4 and the lower portion PR2 of the interior material 4 are subjected to the cleaning treatment. There will be a difference in color between the surface and the surface after cleaning. This is because stains that discolor the surface of the interior material 4, such as cigarette tar stains, tend to adhere to the upper surface of the interior material 4, and the upper surface of the interior material 4 has stains. This is because it is harder to irradiate ultraviolet rays than the upper surface of the interior material 4. Further, when the surface of the interior material 4 is irradiated with ultraviolet rays, the pigment of the attached stains is decomposed on the surface of the interior material 4 irradiated with ultraviolet rays, so that the color of the stains becomes lighter and approaches white, so-called. Causes color loss. If the color is significantly lost, it may turn pale.

On the other hand, in the method for regenerating the interior material of the present embodiment, first, the bleaching treatment liquid is applied only to the surface of the upper portion PR1 of the interior material 4 to bleach only the dirt on the surface of the portion PR1. A so-called pre-bleaching treatment is performed between the upper portion PR1 of the interior material 4 and the lower portion PR2 of the interior material 4 so that the shades are brought close to each other. As a result, a large amount of the bleaching treatment liquid applied to the surface of the interior material 4 and a small amount of the bleaching treatment liquid applied to the surface of the interior material 4 can be applied, and a gradation is generated. To do. Therefore, even if it is evaluated in step S1 that there is a difference in the degree of discoloration between the surface of the upper portion PR1 of the interior material 4 and the surface of the lower portion PR2 of the interior material 4, the interior is decorated. Prevents or suppresses the occurrence of a difference in color after cleaning treatment between the surface of the upper portion PR1 of the material 4 and the surface of the lower portion PR2 of the interior material 4, and makes the color tone after the cleaning treatment uniform. Can be finished to.

The partial PR2 may be a portion different from the partial PR1, and the partial PR2 may not be arranged below the partial PR1. Further, in step S2, a small amount of the bleaching treatment liquid may be applied to the surface of the lower portion PR2 of the interior material 4. For example, the amount of bleaching liquid applied per unit area on the surface of the upper portion PR1 of the interior material 4 is larger than the amount of bleaching liquid applied per unit area on the surface of the lower portion PR2 of the interior material 4. As such, the bleaching treatment liquid may be applied to the surface of the upper portion PR1 of the interior material 4 and the surface of the lower portion PR2 of the interior material 4.

As the bleaching treatment liquid, a bleaching treatment liquid similar to the cleaning treatment liquid described in step S3 described later, that is, a bleaching treatment liquid in which an alkaline inorganic cleaning agent, a stain decomposing enzyme, and a first bleaching agent are dissolved in water is used. However, for example, it is preferable to use a bleaching solution containing the cleaning treatment solution described in step S3 described later and a bleaching agent different from the cleaning treatment solution. Further, for example, unlike the cleaning treatment liquid described in step S3 described later, a bleaching treatment liquid containing a bleaching agent can be used.

The specific method of applying the bleaching treatment liquid in step S2 is not particularly limited, but for example, whether the bleaching treatment liquid is sprayed on the surface of the interior material (interior cloth) 4 using a low-pressure sprayer or the like. , It can be applied with a mop with a stick or the like, or it can be applied with a mop with a stick or the like after spraying with a low-pressure sprayer or the like. At this time, the spraying amount, that is, the coating amount of the bleaching treatment liquid on the surface of the partial PR1 is preferably about 10 to 100 g / m ² .

When a bleaching treatment solution similar to the cleaning treatment liquid described in step S3 described later is used as the bleaching treatment liquid, a bleaching treatment liquid having a pH of 10 or more (alkaline) and capable of removing a wide range of stains can be used. For example, a bleaching solution containing an alkaline cleaning agent, a stain-degrading enzyme, and a first bleaching agent may be used, or an alkaline cleaning agent, a stain-degrading enzyme (neutral agent), and a first bleaching agent may be used. Each may be sprayed or applied independently.

As the alkaline cleaning agent, for example, an aqueous cleaning agent containing an alkaline substance such as a sodium hydroxide-based or potassium-based alkali metal salt, a silicate, or an ammonia compound, such as one containing sodium hydroxide and sodium carbonate, is used. be able to. Further, as the alkaline cleaning agent, an aqueous cleaning agent containing an alkaline substance such as aminoethanol, anionic surfactant, inorganic alkali, 2-butoxyethanol, sodium metasilicate, and sodium hypochlorite can be used.

The stain-degrading enzyme is used to uniformly clean and finish the entire interior material (interior cloth). As the stain-degrading enzyme, one containing propylene glycol, papain, polyethylene or the like can be used.

The first bleach is used to finish the interior material (interior cloth) with high brightness. The first bleaching agent is preferably an oxidizing bleaching agent having a large effect on the alkaline side. Specifically, for example, a 1 to 35% aqueous solution of hydrogen peroxide, a 1 to 20% aqueous solution of sodium peroxide, or the like may be used. it can. Further, a chlorine bleach, for example, a 1 to 12% aqueous solution of sodium hypochlorite effective chlorine is also effective.

In step S2, the bleaching treatment liquid can be applied using the coating tool 11 shown in FIG. As shown in FIG. 3, the applicator 11 is attached to the elongated rod-shaped handle 12 (rod member), the base 14 connected to the handle 12 via the universal joint 13 (connector), and the base 14. It has a coating portion 15 and a coating portion 15. The base 14 has a plate-like or semi-cylindrical shape. The base portion 14 has a surface portion 14a arranged on the side opposite to the side connected to the handle portion 12. The surface portion 14a has a rectangular shape in a plan view and has a flat surface. A coating portion 15 is attached to the surface portion 14a so as to cover substantially the entire surface of the surface portion 14a. The coating portion 15 includes, for example, a base sheet having a rectangular shape and a moquette attached to the base sheet, and the bleaching treatment liquid is supplied to the coating portion 15.

When the coating tool 11 shown in FIG. 3 is used, in step S2, the bleaching treatment liquid is applied to the surface of the partial PR1 by the coating tool 11 including the coating portion 15 to which the bleaching treatment liquid is supplied.

When the partial PR2 is adjacent to the partial PR1, preferably, in step S2, the coating portion 15 is pressed against the surface of the interior material 4, and the coating tool 11 is moved from the position of the surface of the partial PR1 to the position of the surface of the partial PR2. The bleaching solution is stretched from the surface of the partial PR1 to the surface of the partial PR2. That is, at the boundary between the portion of the interior material 4 that is subjected to the pre-bleaching treatment and the portion that is not subjected to the pre-bleaching treatment, the bleaching treatment liquid is applied from the portion that is subjected to the pre-bleaching treatment to the portion that is not subjected to the pre-bleaching treatment. Pay to shed.

In such a case, the bleaching treatment applied to the surface of the interior material 4 from the region where the amount of the bleaching treatment liquid applied to the surface is large to the region where the amount of the bleaching treatment liquid applied to the surface is small. The amount of liquid applied gradually decreases, and a so-called gradation is formed. Therefore, it is possible to further prevent or suppress the occurrence of a color difference after the cleaning treatment between the surface of the upper portion PR1 of the interior material 4 and the surface of the lower portion PR2 of the interior material 4, and after the cleaning treatment. It is possible to finish the color tone more uniformly.

Further, when the partial PR2 is arranged below the partial PR1 and the partial PR2 is adjacent to the partial PR1, the bleaching treatment liquid is spread from the upper side to the lower side when the bleaching treatment liquid is stretched from the surface of the partial PR1 to the surface of the partial PR2. The bleaching solution does not return in the direction opposite to the direction in which the bleaching solution is stretched. Therefore, in the interior material 4, the bleaching treatment liquid applied to the surface is applied from the region where the amount of the bleaching treatment liquid applied to the surface is large to the region where the amount of the bleaching treatment liquid applied to the surface is low. The amount can be more reliably and gradually reduced.

In the step of regenerating the interior material shown in FIG. 1, next, a cleaning treatment liquid is prepared according to the degree of dirt on the surface of the interior material 4 (see FIG. 2) (step S3 in FIG. 1). In this step S3, a cleaning agent or the like is mixed according to the degree of dirt on the surface of the interior material 4 evaluated in step S1, and then a cleaning treatment liquid to be applied to the surface of the interior material is prepared in step S4 described later. ..

As the cleaning treatment liquid, one having a pH of 10 or more (alkaline) and capable of removing a wide range of stains can be used. For example, a cleaning treatment solution containing an alkaline cleaning agent, a stain-degrading enzyme, and a first bleaching agent may be used, or an alkaline cleaning agent, a stain-degrading enzyme (neutral agent), and a first bleaching agent may be used. Each may be sprayed or applied independently.

As described above, the alkaline cleaning agent contains, for example, an alkaline metal salt such as sodium hydroxide or potassium, a silicate, or an alkaline substance such as an ammonia compound, such as those containing sodium hydroxide and sodium carbonate. An aqueous cleaning agent can be used. Further, as the alkaline cleaning agent, an aqueous cleaning agent containing an alkaline substance such as aminoethanol, anionic surfactant, inorganic alkali, 2-butoxyethanol, sodium metasilicate, and sodium hypochlorite can be used.

As described above, the stain-decomposing enzyme is used to uniformly clean and finish the entire interior material (interior cloth). As the stain-degrading enzyme, one containing propylene glycol, papain, polyethylene or the like can be used.

As described above, the first bleaching agent is used to finish the interior material (interior cloth) with high brightness. The first bleaching agent is preferably an oxidizing bleaching agent having a large effect on the alkaline side. Specifically, for example, a 1 to 35% aqueous solution of hydrogen peroxide, a 1 to 20% aqueous solution of sodium peroxide, or the like may be used. it can. Further, a chlorine bleach, for example, a 1 to 12% aqueous solution of sodium hypochlorite effective chlorine is also effective.

In the step of regenerating the interior material shown in FIG. 1, the cleaning treatment liquid is then applied to the surface of the interior material 4 (see FIG. 2) (step S4 in FIG. 1). In this step S4, the alkaline cleaning treatment solution prepared in step S3 is applied to the surface of the partial PR1 (see FIG. 2) and the surface of the partial PR2 (see FIG. 2), that is, to the surface of the interior material 4. Apply.

The specific method of applying the cleaning treatment liquid in step S4 is not particularly limited, but for example, cleaning is performed on the surface of the partial PR1 and the surface of the partial PR2, that is, on the surface of the interior material (interior cloth) 4. The treatment liquid can be sprayed using a low-pressure sprayer or the like, applied with a mop with a stick or the like, or sprayed with a low-pressure sprayer or the like and then applied with a mop with a stick or the like. At this time, the spraying amount, that is, the coating amount of the cleaning treatment liquid on the surface of the partial PR1 and the surface of the partial PR2 is preferably about 10 to 100 g / m ² .

In step S4, as in step S2, the cleaning treatment liquid can be applied using the coating tool 11 shown in FIG. At this time, the cleaning treatment liquid is supplied to the coating portion 15. When the coating tool 11 shown in FIG. 3 is used, in step S4, the coating tool including the coating portion 15 to which the cleaning treatment liquid is supplied is supplied to the surface of the partial PR1 and the surface of the partial PR2, that is, the surface of the interior material 4. The cleaning treatment liquid is applied according to No. 11.

In the step of regenerating the interior material shown in FIG. 1, next, the interior material 4 is left in a state where the cleaning treatment liquid is applied to the surface of the interior material 4 (see FIG. 2) (step S5 in FIG. 1). In step S5, the surface of the interior material 4 is cleaned by soaking the surface of the interior material 4 with a cleaning liquid until the dirt is decomposed, that is, a so-called so-called so-called so-called so-called cleaning treatment is performed.

As a result, the state in which the cleaning treatment liquid is applied to the surface of the interior material 4 can be maintained until the dirt adhering to the surface of the interior material 4 is decomposed, so that the dirt adhering to the surface of the interior material 4 can be removed. Can be easily removed.

That is, in the step of regenerating the interior material of the present embodiment, the pre-bleaching treatment and the soaking cleaning treatment are performed. As a result, even if the surface of the interior material 4 has a high degree of dirt, or the interior material 4 has a high degree of surface dirt and the interior material 4 has a low degree of surface dirt. Dirt adhering to the surface of the interior material 4 can be easily removed, and the interior material 4 can be regenerated so as to exhibit a good appearance.

Preferably, in this step S5, the interior material 4 is left for 1 to 24 hours with the cleaning treatment liquid applied to the surface of the interior material 4. When the leaving time is 1 hour or more, the time for holding the cleaning treatment liquid applied to the surface of the interior material 4 can be extended to some extent as compared with the case where the leaving time is less than 1 hour. It is possible to easily remove the dirt adhering to the surface of the. Further, when the leaving time is 24 hours or less, compared to the case where the leaving time exceeds 24 hours, the time required for the process of regenerating the interior material is increased while ensuring the effect of removing the dirt adhering to the surface of the interior material 4 to some extent. It can be shortened.

Further, it is preferable to change the leaving time according to the degree of dirt. For example, when the degree of dirtiness is low, it is preferable to shorten the leaving time, and when the degree of dirtiness is high, it is preferable to lengthen the leaving time. As a result, in the portion of the interior material 4 having a high degree of surface contamination, the effect of removing the stain adhering to the surface of the interior material 4 is secured to some extent, and in the portion of the interior material 4 having a low degree of surface contamination. The time required for the recycling process of the interior material 4 can be shortened.

Further, in step S5, the cleaning treatment liquid is applied in order from the portion of the interior material 4 having a high degree of surface contamination so that the portion of the interior material 4 having a high degree of surface contamination has a longer standing time. It is preferable to do so.

For example, the sodium hydroxide aqueous solution and the sodium carbonate aqueous solution are both colorless and transparent. Propylene glycol is colorless and transparent, and papain and polyethylene are both white. The hydrogen peroxide solution is colorless, sodium peroxide is yellowish white, and sodium hypochlorite is pale yellow. Therefore, since the cleaning treatment liquid is also colorless, white, or yellowish white, it is necessary to identify whether or not the cleaning treatment liquid is applied to the surface of the interior material 4 after applying the cleaning treatment liquid to the surface of the interior material 4. It is difficult.

On the other hand, in step S4, by applying the cleaning treatment liquid in order from the portion of the interior material 4 having the highest degree of stain on the surface, it is possible to easily grasp to what portion of the interior material 4 has been applied to the surface during work. be able to. Further, by applying the cleaning treatment liquid in order from the portion of the interior material 4 having the highest degree of dirt on the surface, even when a plurality of workers perform the work, the surface of the interior material 4 among the plurality of workers can be used. Since the order of the parts to which the cleaning treatment liquid is applied is not mistaken, the work can be performed efficiently.

In the process of regenerating the interior material shown in FIG. 1, next, a neutralizing treatment liquid that neutralizes the cleaning treatment liquid is applied to the surface of the interior material 4 (see FIG. 2), and the surface of the interior material 4 is cleaned. (Step S6 in FIG. 1). In this step S6, the neutralization treatment liquid was applied to the surface of the partial PR1 (see FIG. 2) and the surface of the partial PR2 (see FIG. 2), that is, the surface of the interior material 4, and the cleaning treatment liquid was applied. This is a step of removing stains on the surface of the partial PR1 and the surface of the partial PR2 to which the cleaning treatment liquid is applied, that is, the surface of the interior material 4 to which the cleaning treatment liquid is applied, that is, removing the stains. As a result, the alkaline cleaning treatment liquid applied to the surface of the interior material 4 can be neutralized by the neutralization treatment liquid, and the alkaline cleaning treatment liquid can be removed from the surface of the interior material 4 together with dirt. it can.

In the cleaning treatment step of step S6, first, a neutralizing treatment liquid that neutralizes the alkaline cleaning treatment liquid is applied to the surface of the interior material 4 (see FIG. 2) (step S7 of FIG. 1). That is, the cleaning treatment step of step S6 includes a neutralization treatment step of applying a neutralizing treatment liquid to the surface of the interior material 4 to neutralize the alkaline cleaning treatment liquid.

The specific method for applying the neutralizing treatment liquid in step S7 is not particularly limited, but for example, the surface of the partial PR1 (see FIG. 2) and the surface of the partial PR2 (see FIG. 2), that is, the interior material. (Interior cloth) 4 is sprayed with a neutralizing solution using a low-pressure sprayer or the like, applied with a mop with a stick or the like, or sprayed with a low-pressure sprayer or the like and then with a stick. It can be applied with a mop or the like. At this time, the amount of the neutralizing treatment liquid sprayed, that is, the coating amount on the surface of the partial PR1 and the surface of the partial PR2 is preferably about 10 to 100 g / m ² .

As the neutralization treatment liquid, for example, a 1-35% aqueous solution of hydrogen peroxide or the like can be used. In such a case, the alkaline cleaning treatment liquid can be efficiently neutralized.

As shown in FIG. 4, preferably, the neutralization treatment step of step S7 includes a first neutralization treatment step of step S9 and a second neutralization treatment step of step S10.

In the first neutralization treatment step of this step S9, the first neutralization treatment liquid is applied to the surface of the partial PR1 and the surface of the partial PR2, that is, the surface of the interior material 4. Further, in the second neutralization treatment step of step S10, after the first neutralization treatment step of step S9, the surface of the interior material 4 coated with the neutralization treatment liquid is neutralized to neutralize the cleaning treatment liquid. Apply the treatment liquid. That is, in the second neutralization treatment step of this step S10, the second neutralization treatment liquid is applied to the surface of the partial PR1 and the surface of the partial PR2, that is, the surface of the interior material 4. In other words, in the neutralization treatment step of step S7, the neutralization treatment step of applying the neutralization treatment liquid to the surface of the interior material 4 to neutralize the alkaline cleaning treatment liquid is repeated twice.

By repeating the neutralization treatment step twice in this way, the alkaline cleaning treatment liquid applied to the surface of the interior material 4 is surely neutralized as compared with the case where the neutralization treatment step is performed only once. be able to.

In step S9 and step S10, the neutralizing treatment liquid can be applied by using the coating tool 11 shown in FIG. 3, as in step S2. At this time, the neutralizing treatment liquid is supplied to the coating portion 15. When the coating tool 11 shown in FIG. 3 is used, in steps S9 and S10, the coating portion 15 to which the neutralizing treatment liquid is supplied to the surface of the partial PR1 and the surface of the partial PR2, that is, the surface of the interior material 4. The bleaching treatment liquid is applied by the coating tool 11 containing the above.

When the coating tool 11 shown in FIG. 3 is used, as shown in FIG. 5, preferably, the first neutralization treatment step of step S9 includes the first stretching treatment step of step S11 and the second stretching treatment of step S12. Including the process. In the following, an example in which the first neutralization treatment step of step S9 includes the first stretching treatment step of step S11 and the second stretching treatment step of step S12 will be described by way of example. The second neutralization treatment step may include the first stretching treatment step of step S11 and the second stretching treatment step of step S12.

In such a case, in the first stretching treatment step of step S11, the coating portion 15 is pressed against the surface of the interior material 4 at a certain position in the vertical direction so as to show the locus of the coating portion 15 by the locus AR1 of FIG. , The coating tool 11 (see FIG. 3) is slid in the left-right direction, and the stretching process of stretching the neutralizing treatment liquid in the left-right direction on the surface of the interior material 4 is repeated while changing the position in the vertical direction. Apply a neutralizing solution to the surface.

Further, preferably, in the second stretching treatment step of step S12, the coating portion 15 is pressed against the surface of the interior material 4 at a certain position in the horizontal direction so as to show the trajectory of the coating portion 15 by the locus AR2 of FIG. Then, the applicator 11 (see FIG. 3) is slid in the vertical direction, and the stretching process of stretching the neutralizing treatment liquid in the vertical direction on the surface of the interior material 4 is repeated while changing the position in the horizontal direction. Apply the neutralizing solution to the surface of.

That is, by performing steps S11 and S12, the coating tool 11 can be slid in a vertical and horizontal lattice pattern, and when the coating tool 11 slides, the region where the neutralizing treatment liquid is applied and the neutralizing treatment liquid The boundary between the area and the uncoated area can be prevented from being identified. Therefore, the color tone of the surface of the interior material 4 after the cleaning treatment can be finished more uniformly.

In the cleaning treatment step of this step S6, after performing the neutralization treatment by performing step S7, the surface of the interior material 4 is physically cleaned (step S8 in FIG. 1).

The specific method for performing the physical cleaning treatment in step S8 is not particularly limited, but for example, brushing (physical cleaning) can be performed on the surface of the interior material 4 to which the cleaning treatment liquid is sprayed. This brushing is preferably performed after a few minutes to several hours after the cleaning treatment liquid is sprayed. At this time, it is preferable to spread a cloth or the like that absorbs water well on the entire floor in advance so that water does not leak under the floor.

Alternatively, as a specific method in step S8, instead of brushing, physical cleaning is performed by wiping with a cloth, for example, by sprinkling a cloth such as a towel on a mop with a stick having a flat contact surface to wipe off dirt and detergent. May be good. In particular, in Japanese-style rooms and the like, as the interior material 4, a decorative board whose surface is made of paper is often used instead of the interior cloth, but in such a case, brushing is not preferable, so the contact surface is flat. It is preferable to wipe off dirt and detergent using a mop with a stick and a towel. In such a case, step S6 includes step S8 for wiping off the moisture on the surface of the interior material 4 after step S7.

In the cleaning treatment step of step S6, the surface of the brushed interior material may be further rinsed with water. As a result, the cleaning treatment liquid adhering to the surface of the interior material (interior cloth) 4 is removed.

In the cleaning treatment step of step S6, a stain removing liquid containing a water-soluble solvent and a second bleaching agent may be further applied (sprayed) on the surface of the interior material that has been rinsed with water. Specifically, a stain remover containing a water-soluble solvent and a second bleaching agent may be used, or the water-soluble solvent and the second bleaching agent may be individually applied (sprayed).

As a water-soluble solvent, a type of water-soluble solvent that does not damage the interior cloth, such as methyl ether, ethyl ether, and butyl ether, because it penetrates into the interior cloth (especially in the case of vinyl chloride cloth) and causes dirt to emerge. Methylene glycol, ethylene glycol, butylene glycol and the like can be used. Further, when removing local stains, an aromatic organic solvent such as xylene is effective.

As the second bleaching agent, an oxidizing bleaching agent, for example, a 1 to 35% aqueous solution of hydrogen peroxide, a 1 to 20% aqueous solution of sodium peroxide, a 1 to 12% aqueous solution of sodium hypochlorite, or the like is effective. Among them, chlorine bleach, which has a strong bleaching power, produces a bleaching effect in a short time, so that workability is good in terms of time. When removing stubborn stains due to static electricity, heat traces, traces of things, etc., it is preferable to repeatedly remove stains with chlorine bleach. In order to shorten the working time, it is preferable to decolorize the chlorine bleach under the conditions of use acidified with an inorganic or organic acidic substance. In addition, in order to avoid rapid decomposition of chlorine bleach during work, it is desirable to add an organic acidic substance.

In the cleaning treatment step of step S6, the surface of the interior material 4 to which the stain removing liquid is sprayed may be further brushed. Then, the surface of the brushed interior material 4 may be rinsed with water. In such a case, the surface of the interior material 4 coated with the stain removing liquid is rinsed with water. As a result, the stain removing liquid adhering to the surface of the interior material (interior cloth) 4 is removed.

When the degree of dirt on the surface of the interior material 4 is low, step S5 (placement cleaning treatment) may not be performed, and step S7 (neutralization treatment) of step S6 may not be performed. In such a case, the cleaning treatment liquid is applied to the entire surface of the interior material 4 in step S4, and the dirt is raised on the surface in step S6 and wiped off with a wiping towel.

If dirt remains, an additional cleaning agent or the like may be mixed with the cleaning treatment solution used in step S4 to perform a partial cleaning treatment, depending on the degree of dirt remaining. After the partial cleaning treatment, water is poured into the spray bottle, water is sprayed on the partially cleaned part to wash away the dirt and detergent adhering to the surface of the interior material, and then wiped off with a towel.

In this way, stains on the interior material (interior cloth) 4 made of vinyl chloride, cloth or the like can be easily removed, and the interior material 4 can be regenerated so as to exhibit a good aesthetic appearance. Moreover, since it is not necessary to replace the interior material 4, no waste is generated. According to such a method of regenerating the interior material, the dirt that has soaked into the interior material 4 can be completely removed. Further, the cleaning of the interior material 4 has a uniform finish.

The stains on the interior material 4 include oil stains, cigarette smoke stains, soot stains, mold stains, hand stains, static electricity and heat stains, furniture trace stains, and stains with splashes of drinks and ink. In addition, there are various types such as those whose cause is not clear. These stains are various, such as those that are easy to clean and those that are difficult to clean, but according to the method for regenerating the interior material of the present embodiment, such stains can be easily removed, and the interior material can be used. It can be easily regenerated to give a good aesthetic appearance.

The brushing in step S8 is preferably performed before the cleaning treatment liquid applied to the surface of the interior material dries, whereby the cleaning treatment liquid and dirt can be reliably wiped off. Further, the brushing in step S8 is preferably performed before the stain removing liquid applied to the surface of the interior material dries, whereby the stain removing liquid and dirt can be reliably wiped off.

<First modification of the method of regenerating interior materials>
Next, a method of regenerating the interior material of the first modification of the embodiment will be described. FIG. 8 is a flow chart showing a part of steps of the method of regenerating the interior material of the first modification of the embodiment.

In this first modification, after the cleaning treatment in step S6, stains, discoloration, scratches, etc. remaining on the surface of the interior material 4 (see FIG. 2) are repaired by partial cleaning or a repair agent. (Step S21 in FIG. 8).

In step S21, for example, in a part of the inner wall 2 (see FIG. 2) where the surface of the interior material 4 has been cleaned, the interior material 4 is removed to expose the inner wall 2 (FIG. 8). Step S22), after that, a repair material for repairing the interior material 4 can be attached to the exposed inner wall 2 (step S23 in FIG. 8). Such a method is called patchwork and repairs small scratches on the interior material 4 or peeling of the interior material 4.

In a part of the inner wall 2, the interior material 4 may be in a defective state such as peeling off. In such a case, by performing steps S22 and S23 of FIG. 8, even if the interior material 4 is missing in a part of the inner wall 2, the inner wall is wider than the region where the interior material 4 is missing. Since a repair material can be newly attached to the interior material 4 instead of the interior material 4, an excellent finish can be obtained so as to exhibit a better aesthetic appearance.

Further, in step S21, for example, after performing step S23, the surface of the interior material 4 that has been cleaned can be painted (step S24 in FIG. 8).

In step S24, a water-based paint having a color such as white or ivory is applied. Such a method is referred to as make-up or touch-up.

As the water-based paint, a water-based paint including a flex emulsion paint can be used. The flex emulsion paint is a synthetic resin emulsion paint (for example, acrylic type) having improved adhesion to the interior material 4 such as interior cloth (for example, vinyl cloth), wallpaper, gypsum board, and Gyptone (registered trademark), and is used for interior decoration. Even when it is applied very thinly to the surface of the material 4, the coating film does not form a broken portion on the surface of the interior material 4.

When the surface of the interior material 4 is strongly soiled, the stain may not be easily removed in a part of the surface of the interior material 4 even if the cleaning treatment of step S6 is performed.

On the other hand, in the first modification, the cleaning process of step S6 is performed, and then step S21 is performed. As a result, even if dirt cannot be removed in a part of the surface of the interior material 4 even after the cleaning treatment in step S6, the surface of the interior material 4 is painted in the area where the dirt remains. It is possible to obtain an excellent finish so that the interior material can be colored with stains to give a better appearance. That is, a small range of stains or discoloration can be concealed with a touch-up coat to improve the aesthetic appearance.

Note that FIG. 8 illustrates an example in which step S24 is performed after performing steps S22 and S23, but step S24 is performed after step S6 and before performing steps S22 and S23. May be good.

In step S24, when painting the surface of the interior material 4 in the area where dirt remains, it is preferable to repeat painting and drying alternately in several times. As a result, the color of the region where the stain remains can be gradually brought closer to the color of the region where the stain does not remain, so that the interior material 4 can be regenerated so as to exhibit a good aesthetic appearance.

Further, in step S24, a paint mixed with a repair agent may be applied. Penet (registered trademark) or the like can be used as the repair agent. As a result, even if there are scratches or the like in a part of the surface of the interior material 4, the surface of the interior material is painted in the scratched areas to make the scratches inconspicuous and further improve the interior material. An excellent finish can be obtained so as to exhibit a good aesthetic appearance.

Further, in step S24, the discolored region of the surface of the interior material 4 may be repaired with a make-up coat that is liquid at the time of application but becomes powder at the time of drying. In such a case, a liquid make-up coat is applied with a pad to the discolored area of the surface of the interior material 4. Even when the make-up coat is applied to the non-discolored area of the surface of the interior material 4, the surface of the interior material 4 is unlikely to change, so the repaired part and the repaired part are not applied. The boundary between the parts is difficult to see. Therefore, only a part of the surface of the interior material 4 can be easily repaired.

As described above, in step S21, after the entire surface of the interior material 4 is cleaned, dirt, stains, scratches, etc. remaining on a part of the surface of the interior material 4 are repaired. Therefore, in step S21, in addition to the coating of step S24 described above, partial stains can be cleaned by performing special partial cleaning.

As a partial cleaning, stains that can be decomposed can be decomposed with an oxygen-based bleach or the like. At this time, for example, an oxygen-based bleaching agent is applied to a part of the surface of the interior material 4, and the area of the surface of the interior material 4 to which the oxygen-based bleaching agent is applied is heated with a dryer. It can activate oxygen-based bleach and decompose stains or stains. Further, for example, a chlorine-based bleach is applied to a part of the surface of the interior material 4, and then an oxygen-based bleach is applied to a region of the surface of the interior material 4 to which the chlorine-based bleach is applied. The agent can be reapplied. This neutralizes the bleach and activates the bleach. Alternatively, stains that cannot be decomposed can be removed by floating them with an alkali and a surfactant and sprinkling water on them to wash them off.

<Second modification of the method of regenerating interior materials>
Next, a method of regenerating the interior material of the second modification of the embodiment will be described. FIG. 9 is a flow chart showing a part of steps of the method of regenerating the interior material of the second modification of the embodiment.

The method for regenerating the interior material of the second modification is different from the method for regenerating the interior material of the embodiment in that the pre-bleaching treatment is not performed. Other than that, it is the same as the method for regenerating the interior material of the embodiment. In addition, the method of regenerating the interior material of this 2nd modification and the 1st modification of embodiment may be combined.

In the interior material recycling step of the second modification, first, the same steps as in step S1 of FIG. 1 (step S1 of FIG. 9) are performed in the same manner as in the interior material recycling step of the embodiment. The dust on the surface of the material 4 (see FIG. 2), that is, the dust adhering to the surface of the interior material 4, is removed, and the degree of dirt on the surface of the interior material 4 is evaluated.

On the other hand, in the interior material regeneration step of the second modification, unlike the interior material regeneration step of the embodiment, after performing step S1 in FIG. 9, a bleaching treatment liquid is applied to the surface of the interior material 4. The step, that is, the step corresponding to step S2 in FIG. 1 is not performed. Then, in the interior material recycling step of the second modification, unlike the interior material recycling step of the embodiment, after performing step S1 of FIG. 9, the same steps as step S3 of FIG. 1 (FIG. 9). Step S3) is performed to prepare a cleaning treatment liquid according to the degree of dirt on the surface of the interior material 4, and then the same steps as in step S4 of FIG. 1 (step S4 of FIG. 9) are performed to prepare the interior material. A cleaning treatment liquid is applied to the surface of No. 4.

After that, in the interior material regeneration step of the second modification, the same steps as in step S5 and step S6 of FIG. 1 (steps S5 and step S6 of FIG. 9) are similar to the interior material regeneration step of the embodiment. ), And with the cleaning treatment liquid applied to the surface of the interior material 4, the interior material is left to stand for cleaning treatment, and the surface of the interior material 4 is neutralized with the cleaning treatment liquid. Is applied and the surface of the interior material is cleaned.

In the method of regenerating the interior material of the second modification, since the pre-bleaching treatment is not performed, a portion of the interior material 4 having a high degree of surface contamination and a portion of the interior material 4 having a low degree of surface contamination are mixed. Even so, the effect of regenerating the interior material so as to exhibit a good appearance is slightly smaller than that of the method of regenerating the interior material of the embodiment.

However, in the method of regenerating the interior material of the second modification, the cleaning treatment liquid is applied to the surface of the interior material 4 until the dirt adhering to the surface of the interior material 4 is decomposed by performing the soaking cleaning treatment. Since the state of the interior material 4 can be maintained, the stains adhering to the surface of the interior material 4 can be easily removed even when the surface of the interior material 4 is highly soiled, so that the interior material has a good appearance. 4 can be reproduced. In addition, dirt adhering to the surface of the interior material 4 can be easily removed, and the alkaline cleaning treatment liquid applied to the surface of the interior material 4 can be neutralized by the neutralization treatment liquid, and the surface of the interior material 4 can be neutralized. Therefore, the alkaline cleaning treatment liquid can be easily removed together with the dirt.

<Third variant of the interior material regeneration method>
Next, a method of regenerating the interior material of the third modification of the embodiment will be described. FIG. 10 is a flow chart showing a part of steps of a method of regenerating the interior material of the third modification of the embodiment.

The method of regenerating the interior material of the third modification is different from the method of regenerating the interior material of the embodiment in that it is not subjected to the soaking and cleaning treatment. Other than that, it is the same as the method for regenerating the interior material of the embodiment. In addition, the method of regenerating the interior material of the 3rd modification and the 1st modification of the embodiment may be combined.

In the interior material recycling step of the third modification, first, the same steps as in steps S1 and S2 of FIG. 1 (steps S1 and S2 of FIG. 10) are the same as in the interior material recycling step of the embodiment. ) Is performed to remove dust on the surface of the interior material 4 (see FIG. 2), that is, dust adhering to the surface of the interior material 4, the degree of dirt on the surface of the interior material 4 is evaluated, and partial PR1 (FIG. 2) is performed. The bleaching treatment liquid is applied to the surface of the interior material 4, that is, the surface of the interior material 4. In the interior material recycling step of the third modification, the same steps as in the interior material recycling step of the embodiment, followed by steps S3 and S4 of FIG. 1 (steps S3 and step of FIG. 10). Perform S4) to prepare a cleaning treatment liquid according to the degree of dirt on the surface of the interior material 4, and apply the cleaning treatment liquid to the surface of the partial PR1 and the surface of the partial PR2, that is, the surface of the interior material 4. ..

On the other hand, in the interior material regeneration step of the third modification, unlike the interior material regeneration step of the embodiment, after performing step S4 in FIG. 10, a cleaning treatment liquid is applied to the surface of the interior material 4. In this state, the step of performing the soaking cleaning process in which the interior material 4 is left unattended, that is, the step corresponding to step S5 of FIG. 1 is not performed. Then, in the interior material regeneration step of the third modification, unlike the interior material regeneration step of the embodiment, immediately after the step S4 of FIG. 10 is performed, the same step as the step S6 of FIG. 1 (FIG. Step S6) of step 10 is performed to apply a neutralizing treatment liquid for neutralizing the cleaning treatment liquid to the surface of the partial PR1 and the surface of the partial PR2, that is, the surface of the interior material 4, and the surface of the interior material 4 is coated. Perform cleaning treatment.

In the method of regenerating the interior material of the third modification, the interior material is not subjected to the soaking and cleaning treatment, so that the interior material can be regenerated so as to exhibit a good appearance even when the entire surface of the interior material 4 is highly soiled. The effect that can be achieved is slightly smaller than that of the step of regenerating the interior material of the embodiment.

However, even in the method of regenerating the interior material of the third modification, the pre-bleaching treatment is performed in the same manner as the method of regenerating the interior material of the embodiment, so that the portion of the interior material 4 having a high degree of surface contamination and the interior material Even if a portion of 4 having a low degree of dirt on the surface is mixed, the dirt adhering to the surface of the interior material can be easily removed, and the interior material can be regenerated so as to exhibit a good appearance. ..

Although the invention made by the present inventor has been specifically described above based on the embodiment, the present invention is not limited to the embodiment and can be variously modified without departing from the gist thereof. Needless to say.

Further, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. For example, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. .. In addition, other configurations may be added, deleted, or replaced with respect to a part of the configurations of each embodiment.

1 ... Ceiling, 2 ... Inner wall, 3 ... Floor, 4 ... Interior material, 11 ... Coating tool, 12 ... Handle, 13 ... Universal joint, 14 ... Base, 14a ... Surface, 15 ... Coating, AR1, AR2 ... Trajectory, PR1, PR2 ... part.

Claims (10)

Regenerating interior materials attached to the ceiling or inner wall In the method of regenerating interior materials,
(A) A step of applying an alkaline cleaning treatment liquid to the surface of the interior material.
(B) After the step (a), the step of leaving the interior material in a state where the cleaning treatment liquid is applied to the surface of the interior material.
(C) After the step (b), a step of applying a first neutralizing treatment liquid for neutralizing the cleaning treatment liquid to the surface of the interior material and performing the cleaning treatment on the surface of the interior material.
(E) After the step (c), a step of painting the surface of the interior material that has been subjected to the cleaning treatment.
Have,
In step (e), a paint mixed with a repair agent is applied.
How to regenerate interior materials. In the method for regenerating an interior material according to claim 1,
In step (b), a method for regenerating an interior material, in which the cleaning treatment liquid is applied to the surface of the interior material and the interior material is left to stand for 1 to 24 hours. In the method for regenerating an interior material according to claim 1 or 2.
The degree of dirt on the surface of the first part of the interior material is higher than the degree of dirt on the surface of the second part of the interior material, which is different from the first part.
The method of regenerating the interior material is
(D) A step of applying a bleaching treatment liquid to the surface of the first portion before the step (a).
Have,
In the step (a), the cleaning treatment liquid is applied to the surface of the first portion and the surface of the second portion.
In the step (c), the first neutralizing solution is applied to the surface of the first portion and the surface of the second portion, and the surface of the first portion and the surface of the second portion are coated. How to regenerate interior materials by cleaning. In the method for regenerating an interior material according to claim 3,
The second part is adjacent to the first part and
In step (d), a method for regenerating an interior material, in which the bleaching treatment liquid is stretched from the surface of the first portion to the surface of the second portion. In the method for regenerating an interior material according to claim 3 or 4.
The first part and the second part are attached to the inner wall.
The second part is a method for regenerating an interior material, which is arranged below the first part. In the method for regenerating an interior material according to claim 1 or 2.
The step (c) is
(C1) After the step (b), the step of applying the first neutralization treatment liquid to the surface of the interior material.
(C2) After the step (c1), a step of applying a second neutralization treatment liquid for neutralizing the cleaning treatment liquid to the surface of the interior material to which the first neutralization treatment liquid is applied.
(C3) After the step (c2), the step of wiping off the moisture on the surface of the interior material,
How to regenerate interior materials, including. In the method for regenerating an interior material according to claim 1 or 2.
The step (c) is
(C4) A step of repeating the first stretching process of stretching the first neutralizing solution in the left-right direction on the surface of the interior material and applying the first neutralizing solution to the surface of the interior material.
(C5) A step of repeating the second stretching process of stretching the first neutralizing solution in the vertical direction on the surface of the interior material and applying the first neutralizing solution to the surface of the interior material.
How to regenerate interior materials, including. Regenerating interior materials attached to the ceiling or inner wall In the method of regenerating interior materials,
The degree of dirt on the surface of the first part of the interior material is higher than the degree of dirt on the surface of the second part of the interior material, which is different from the first part.
The method of regenerating the interior material is
(A) A step of applying a bleaching treatment liquid to the surface of the first portion,
(B) After the step (a), a step of applying an alkaline cleaning treatment liquid to the surface of the first portion and the surface of the second portion.
(C) After the step (b), a neutralizing solution for neutralizing the cleaning solution is applied to the surface of the first portion and the surface of the second portion, and the surface of the first portion is coated. , And the step of cleaning the surface of the second part,
(E) After the step (c), a step of painting the surface of the interior material that has been subjected to the cleaning treatment.
Have,
In step (e), the step of applying a paint mixed with a repair agent,
How to recycle interior materials. In the method for regenerating an interior material according to claim 8,
The second part is adjacent to the first part and
In step (a), a method for regenerating an interior material, in which the bleaching treatment liquid is stretched from the surface of the first portion to the surface of the second portion. In the method for regenerating an interior material according to claim 8 or 9.
The first part and the second part are attached to the inner wall.
The second part is a method for regenerating an interior material, which is arranged below the first part.