Washing method for odd-shaped object

Abstract

To provide a washing method for an odd-shaped object whereby, even when a plurality of helmets or the like are put into a washing tank, they can be highly efficiently washed without damaging each other and without requiring complicated treatment.SOLUTION: Silicone sheets 5, 6 as cushioning materials and a helmet 1 are placed into a net-like small bag 2, and a lid 4 is closed with a fastener 3. Thereafter, the small bag 2 is placed into a net-like large bag 12 together with silicone sheets 15, 16 as cushioning materials, and a lid 14 is closed with a fastener 13. Subsequently, the helmet in the double bag is put into a washing tank and washed with a stirring flow of a washing liquid.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a cleaning method for irregularly shaped objects, which can clean irregularly shaped objects such as helmets for firefighters, motorcycle drivers, factory workers, etc., firefighter facepieces, fire boots for firefighters, and fire hose attachment terminals with high cleanliness and high efficiency without causing damage such as scratches or deformation. [Background technology]

[0002] Firefighters are required to wear helmets while fighting fires, motorcycle drivers are required to wear helmets while driving, and anyone working in or entering a factory is required to wear a helmet for safety. These helmets are generally hemispherical in shape and have various protrusions and recesses, making them unsuitable for automatic washing in a washing machine, so they are usually washed by hand one by one.

[0003] Meanwhile, devices have also been proposed that mechanically clean helmets by loading them into a cleaning device. Patent Documents 1 to 3 disclose cleaning devices in which one helmet is attached to a chamber and a cleaning liquid is sprayed onto the helmet to individually clean the helmet. Patent Document 4 also discloses a cleaning device that simultaneously cleans multiple (four) helmets. In this cleaning device, the four helmets are attached to attachment sections installed at four fixed positions spaced at equal intervals within the chamber, and the helmets are cleaned with the cleaning liquid while being prevented from moving. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-57991 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-60984 [Patent Document 3] Utility Model Registration No. 3244271 [Patent Document 4] Japanese Patent Application Laid-Open No. 2002-254043 Summary of the Invention [Problem to be solved by the invention]

[0005] However, cleaning helmets manually requires the cleaner to perform tedious tasks, resulting in extremely low cleaning efficiency and a long time-consuming process. Particularly at fire stations, firefighters have to wash their own helmets, which means they have to spend time on additional tasks other than their primary firefighting activities.

[0006] Furthermore, even when helmets are mechanically cleaned using a cleaning device, the conventional devices described in Patent Documents 1 to 3 require each helmet to be placed in a predetermined position in a cleaning tank or cleaning chamber, and each helmet is individually cleaned, making the cleaning process cumbersome and inefficient. Furthermore, the cleaning device described in Patent Document 4 also requires four helmets to be placed in cleaning positions set at predetermined intervals, and the helmets are cleaned while held in that position, which limits the number of helmets that can be cleaned in one process, resulting in low cleaning efficiency and cumbersome cleaning work.

[0007] The present invention has been made in consideration of such problems, and aims to provide a method for cleaning irregularly shaped objects that can clean irregularly shaped helmets and the like with high efficiency and without complicated processing, without damaging each other even when multiple helmets and the like are placed in a cleaning tank. [Means for solving the problem]

[0008] The method for cleaning irregularly shaped objects according to the first aspect of the present invention comprises: A sponge-like cushioning material is placed in a net-shaped first bag having an opening, and the irregular-shaped object to be cleaned is placed in the first bag, and then another sponge-like cushioning material is placed on top of the irregular-shaped object, and the opening of the first bag is closed. a second bag having a net shape larger than the first bag and an opening, a sponge-like bottom cushioning material is placed at the bottom of the second bag, and side wall cushioning materials are placed around the bottom cushioning material; the first bag containing the irregularly shaped object is placed in the space surrounded by the bottom cushioning material and the side wall cushioning materials; and the opening of the second bag is closed; Then, multiple irregularly shaped objects stored in this second bag are placed in a cleaning tank, and buffer material is placed in the cleaning tank, and the irregularly shaped objects are washed by stirring them together with water and cleaning liquid in the cleaning tank.

[0009] In this method for cleaning irregularly shaped objects, for example, The irregularly shaped object is a firefighter's helmet or a firefighter's facepiece.

[0010] A method for cleaning irregularly shaped objects according to a second aspect of the present invention comprises: In a method for cleaning fire-resistant boots as irregular objects, The fire boots are placed in a mesh bag having an opening, Then, a plurality of fire boots stored in the bag are placed in a cleaning tank, and cushioning material is placed in the cleaning tank, which is then stirred with water and cleaning liquid in the cleaning tank to clean the fire boots.

[0011] A method for cleaning irregularly shaped objects according to the third aspect of the present invention comprises: In a method for cleaning a fire hose as an irregular object, A mesh bag is provided with a plurality of partitions, and a plurality of bag sections are arranged in one direction. A buffer material is placed into each bag section through the opening of the mesh bag. The mesh bag containing the buffer material is then wound around a metal fitting of a fire hose. The mesh bag is then fixed to the metal fitting with a string. The method is characterized in that a plurality of fire hoses with mesh bags wrapped around the metal fittings are loaded into a cleaning tank, and buffer material is also loaded into the cleaning tank, and the fire hoses are agitated together with water and cleaning liquid in the cleaning tank to clean the fire hoses. [Effects of the Invention]

[0012] In the first invention of the present application, a double-bag structure is used, consisting of a first bag containing an irregularly shaped object such as a helmet or facepiece, and a second bag larger than the first bag that contains the helmet. Shock absorbent material is placed in both the first and second bags, and multiple bags containing the helmet are placed in a cleaning tank together with the shock absorbent material, which are then agitated by the water flow in the cleaning tank. During this process, the helmets, etc., are agitated by the water flow and move chaotically within the cleaning tank, colliding with the inner wall of the cleaning tank and other helmets. However, because the shock absorbent material is placed in the first bag, and there is also shock absorbent material between the second and first bags, and there is also shock absorbent material within the cleaning tank, the helmets, etc., are not damaged even when they collide chaotically. Furthermore, according to the method of the present invention, multiple helmets, etc., can be placed in a cleaning tank and washed in a manner similar to that of a home washing machine or coin laundry, allowing for simple and efficient washing of multiple helmets. In addition, in this invention, an irregular-shaped object such as a helmet is placed in a first bag together with cushioning material, and the first bag containing the irregular-shaped object is then placed in a second bag together with cushioning material, and the irregular-shaped object is placed in the cleaning tank surrounded by two bags. This reliably prevents scratches caused by collisions when the irregular-shaped object moves around roughly in the cleaning tank. The scratch prevention effect of this double bag is superior to that of using a large amount of cushioning material in a single bag.

[0013] In the second invention, fire boots are placed in a mesh bag and washed in a cleaning tank. In the third invention, a mesh bag containing cushioning material is wrapped around the metal fittings of a fire hose, and the metal fittings and hose are washed in the cleaning tank. This prevents damage to the metal fittings even if they move chaotically in the cleaning tank and collide with each other. In both the second and third inventions, irregularly shaped objects can be washed efficiently with the same ease as a home washing machine or coin laundry. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 10 is a diagram showing a firefighter's helmet as an irregularly shaped object. [Figure 2]1A and 1B are diagrams showing a step of placing a silicone sheet 5 in a pouch 2 in an embodiment of the present invention. [Figure 3] 10 is a diagram showing a process of placing the helmet 1 on the silicon sheet 5. FIG. [Figure 4] 10A and 10B are diagrams showing a process of placing another silicon sheet 6 on the helmet 1. FIG. [Figure 5] FIG. 2 is a diagram showing the state in which the zipper 3 of the pouch 2 is closed. [Figure 6] 10 is a diagram showing a process of spreading a silicone sheet 15 inside a large bag 12. FIG. [Figure 7] FIG. 1 shows a large bag 12 and a small bag 2 containing a helmet 1. [Figure 8] FIG. 10 is a diagram showing a state in which small pouch 2 is placed inside large pouch 12 and zipper 13 is closed. [Figure 9] 10 is a diagram showing a process in which a large bag 12 is placed in a cleaning tank 20 together with a silicone sheet 21 and then stirred and cleaned. [Figure 10] FIG. 1 is a diagram showing a firefighter's facepiece 30 as an irregularly shaped object. [Figure 11] 10 is a diagram showing a process of placing a silicone sheet 5 inside a small bag 2 and placing a face piece 30 on top of the silicone sheet 5. FIG. [Figure 12] FIG. 10 is a diagram showing a fireproof shoe 40 as an irregular object. [Figure 13] 10A and 10B are diagrams showing a process of inserting the fire boots 40 into the mesh bag 41. FIG. [Figure 14] 1 is a diagram showing a fire hose 50 as an irregular object, a discharge end 52, and a water intake end 51. FIG. [Figure 15] FIG. 10 is a view showing a protective member 60 for a mesh bag. [Figure 16] FIG. 1 shows a mesh bag 60 and a silicone sheet 61 inserted therein. [Figure 17] 1 shows a discharge end 52 and a water intake end 51 of a fire hose 50. FIG. [Figure 18] 10 is a diagram showing a process of wrapping the discharge end portion 52 and the water intake end portion 51 with a protective member 60. FIG. [Figure 19]10 is a diagram showing a state in which the discharge end portion 52 and the water intake end portion 51 are wrapped with a protective member 60. FIG. [Figure 20] 10 is a diagram showing a state in which the protective member 60 wound around the discharge end portion 52 and the water intake end portion 51 is tied with strings 65 and 66. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 shows a firefighter's helmet 1, which is an irregular-shaped object to be cleaned in this embodiment. This helmet 1 is not simply a hemispherical shell, but has a complex shape with various protrusions and recesses.

[0016] FIG. 2 shows a net-like pouch 2 used in this embodiment. This pouch 2 is made of a cushioning material, such as nylon or polyester. Nylon has an official water absorption rate of 4.5%, while polyester has an official water absorption rate of 0.4%. This mesh pouch 2 allows a cleaning solution (water with a detergent added) to pass through, while maintaining flexibility for a helmet or other item stored inside. One end of a wire fastener 3 is attached along the edge of the top opening of this mesh pouch 2, and the other end of the wire fastener 3 is attached to the edge of a lid 4 at the top of the pouch 2. By engaging these fasteners 3, the lid 4 closes the top of the pouch 2, allowing the contents to be stored inside the pouch 2.

[0017] In this embodiment, this small pouch 2 is used, and a silicone sheet 5 is placed on the bottom of the small pouch 2, as shown in Figure 2. This silicone sheet 5 is a sheet made of sponge molded into a plate shape and impregnated with silicone, and is a sheet designed for cushioning. The sponge is impregnated with silicone to increase its strength and durability when agitated by the water flow in the washing machine. The sponge is a porous, soft material with countless tiny holes inside.

[0018] Next, as shown in FIG. 3, the helmet 1 is placed upside down on the silicone sheet 5 in the pouch 2.

[0019] Then, as shown in FIG. 4, another silicone sheet 6 is placed on top of the helmet 1 to cover the upper end of the helmet 1 with the silicone sheet 6.

[0020] Next, as shown in FIG. 5, when the zipper 3 is engaged and the opening of the pouch 2 is closed with the lid 4, the helmet 1 is stored inside the pouch 2.

[0021] Next, as shown in Figure 6, a large bag 12 larger than small bag 2 is prepared. Like small bag 2, large bag 12 is made of a mesh-like elastic material and allows cleaning water, made by dissolving cleaning fluid in water, to pass through but not objects inside. Large bag 12 also has an opening at its top end, and the interior of large bag 12 is closed with lid 14 by engaging zipper 13 attached to the edge of this opening with zipper 13 attached to the edge of lid 14 that closes the opening.

[0022] Then, silicone sheets 15 are placed inside this large bag 12. These silicone sheets 15 are made up of five sheets, with one rectangular sheet laid on the bottom of the large bag 12 and four other sheets standing along the four stitches of the rectangular sheet so as to surround the bottom sheet. This forms a space made up of the five silicone sheets 15.

[0023] Next, as shown in Figures 7 and 8, the helmet 1 stored in the small pouch 2 shown in Figure 5 is placed into this large bag 12. This small pouch 2 is placed in a space formed by five silicone sheets 15, and a sixth silicone sheet 16 is placed so as to cover the upper part of the space. In this way, the small pouch 2 is surrounded by the six silicone sheets 15, 16. Then, the fastener 13 provided on the edge of the upper opening of the large bag 12 is fastened, and the lid 14 is closed, sealing the helmet 1 stored in the small pouch 2 within the large bag 12.

[0024] The helmet 1 thus stored in the double mesh bags of large bag 12 and small bag 2 together with the silicone sheets 5, 6 and silicone sheets 15, 16 is placed in a cleaning tank 20 as shown in Figure 9. At this time, a plurality of silicone sheets 21 are also placed in the cleaning tank 20. The opening lid of the cleaning tank 20 is then closed, and a cleaning solution in which a detergent is dissolved in water is introduced into the cleaning tank 20, and the cleaning solution is stirred to clean the helmet 1. The helmet 1 is then removed from the large bag 12 and small bag 2, and a rack is placed in a static drying chamber that dries at an appropriate temperature, and the helmet 1 is hung on the rack to dry.

[0025] Next, the operation of the cleaning method of this embodiment, configured as described above, will be described. Helmets, particularly firefighter helmets, have various protrusions on their shells for purposes such as increasing their shell strength. Therefore, if such helmets were placed in a cleaning tank as is and washed with the agitated water flow of cleaning solution, the helmets would collide with each other or with the inner surface of the cleaning tank 20, resulting in scratches on the helmet shell, particularly on the outer surface. In this embodiment, the helmets are stored between two silicone sheets 5 and 6 in a small mesh bag 2, and the small bag 2 is further stored within a large mesh bag 12, surrounded by six silicone sheets 15 and 16. These silicone sheets function as cushioning, preventing scratches or deformation even when the helmets 1 collide with each other or with the wall of the cleaning tank. Meanwhile, because the small bag 2 and the large bag 12 are made of a mesh material, the cleaning solution penetrates the bags, and the agitated flow of the cleaning solution causes the helmets 1 to move randomly through the cleaning solution, bringing them into contact with the cleaning solution, thereby thoroughly cleaning the helmets 1 stored in the bags.

[0026] In this embodiment, a silicone sheet 21 is further inserted into the cleaning tank 20, which further reduces the impact on the helmets 1 stored in the small bag 2 and the large bag 12 when they are randomly moved by the agitating flow of the cleaning liquid.

[0027] These silicone sheets 5, 6, 15, 16, and 21 are made of sponge impregnated with silicone, so they are strong and unlikely to wear out even with long-term use. Furthermore, the helmet 1 is merely sandwiched between the silicone sheets 5 and 6 within the small pouch 2, and is not fixed to the small pouch 2. Furthermore, the small pouch 2 containing the helmet 1 is merely surrounded by the silicone sheets 15 and 16 within the large pouch 12, and is not fixed to the large pouch 12. However, the sizes of the small pouch 2 and the large pouch 12 are set so that there are no gaps between the helmet 1, the small pouch 2, and the large pouch 12, and therefore the helmet 1 does not move freely within the small pouch 2 or the large pouch 12. On the other hand, if the spacing between the helmet 1, the small pouch 2, and the large pouch 12 is relatively loose, the helmet 1 will swing freely within the mesh pouch 2 while being protected by the silicone sheets 5 and 6, and the entire small pouch 2 will swing freely within the large pouch 12 while being protected by the silicone sheets 15 and 16. In this case, the silicone sheets 5, 6, 15, and 16 are particularly effective in preventing scratches on the helmet 1 while allowing the helmet 1 to swing. In any case, the sizes of the small bag 2, the large bag 12, and the silicone sheets can be determined taking into account the cleaning effect and the scratch prevention effect. In this way, according to this embodiment, irregularly shaped helmets can be washed in the same easy manner as in a home washing machine or coin laundry, so many helmets can be washed efficiently and easily with simple operations. Note that the washing program is specially designed for washing helmets and the like, unlike washing machines for home or coin laundry.

[0028] Next, another embodiment of the present invention will be described. This embodiment is a cleaning method for cleaning a facepiece 30 instead of a helmet 1. As shown in Fig. 10, the facepiece 30 is a face guard or face shield that a firefighter wears on his face during firefighting activities to ensure breathing at the fire scene and to protect his face from fire or obstacles. Unlike welding facepieces, firefighter facepieces have extremely complex shapes due to the needs of their intended use.

[0029] Firefighter facepiece 30, which is a respiratory protective device having such a complex shape, can also be washed in the same manner as the above-mentioned helmet 1. First, as shown in Figure 11, a silicone sheet 5 is placed at the bottom of small bag 2, and facepiece 30 is placed on this silicone sheet 5.

[0030] Thereafter, the facepiece is washed with cleaning liquid in the same steps as those in Figures 4 to 9. In the case of this facepiece 30, as in the case of helmet 1, the cleaning liquid passes through small bag 2 and large bag 12, which are mesh nets, and comes into direct contact with facepiece 30 in cleaning tank 20, cleaning facepiece 30 with the water flow of cleaning liquid, and even if facepiece 30 moves violently in cleaning tank 20 and collides with other facepieces or the wall of the cleaning tank, facepiece 30 is not damaged.

[0031] Next, another embodiment of the present invention will be described. This embodiment relates to a method for cleaning fire-resistant shoes 40 as shown in Fig. 12. As shown in Fig. 13, the fire-resistant shoes 40 are placed in a mesh bag 41, which is made by shaping a mesh net material into a pentagonal bag. The mesh bag 41 has an opening on its longest side, and a line fastener 42 for opening and closing the opening is attached to the edge of the opening. After the fire-resistant shoes 40 are placed in the mesh bag 41, the fastener 42 is closed to seal the fire-resistant shoes 40 inside the mesh bag 41.

[0032] In this state, the fire-resistant shoes 40 are placed in the cleaning tank 30 shown in Figure 9, and are cleaned by the agitated flow of cleaning liquid. In this embodiment, the cleaning liquid passes through the mesh bag 41, which is a mesh net, in the cleaning tank 20 and comes into direct contact with the fire-resistant shoes 40, cleaning the fire-resistant shoes 40 with the water flow of the cleaning liquid, and even if the fire-resistant shoes 40 move violently in the cleaning tank 20 and collide with other fire-resistant shoes 40 or the wall of the cleaning tank, the fire-resistant shoes 40 will not be damaged.

[0033] Next, another embodiment of the present invention will be described. This embodiment relates to a method for cleaning a fire hose. As shown in FIG. 14 , a fire hose 50 is composed of a long hose portion made of a rollable material, a fire water discharge end 52 provided at each end of the hose portion, and a fire water intake end 51 provided at each end of the hose portion. The discharge end 52 is an end for discharging pressurized water to extinguish a fire, and the intake end 51 is an end for connecting to a fire hydrant and drawing high-pressure water from the hydrant. Both the discharge end 52 and the intake end 51 are cylindrical metal components that must be strong enough to maintain their shape so as not to be deformed by high-pressure water or come off after being attached to the hydrant. Therefore, because the discharge end 52 and the intake end 51 are rigid and heavy, they are prone to collisions with each other or with the cleaning wall in the cleaning tank and are therefore susceptible to damage.

[0034] For this reason, as shown in Figures 15 and 16, protective members 60 are used at the discharge end 52 and the intake end 51 of the fire hose 50 to clean it with the agitated flow of cleaning liquid in the cleaning tank 20. Like the small bag 2 and the large bag 12, the protective member 60 is made of a cushioning material. It allows the cleaning liquid (water with added cleaning agent) to pass through, while maintaining the flexibility of the contents stored inside. The protective member 60 is bag-shaped with one open edge, and a vertical partition 62 is formed at the open end to divide the open end into three parts. The partitions 62 form three bag sections. Silicone sheets 61, made of porous sponges impregnated with silicone, are stored within the bag sections. A string 65 is attached to the protective member 60 near its center, and a string 66 is attached to the protective member 60 near its opening.

[0035] Then, as shown in Fig. 17, the discharge end 52 and the intake end 51 of the fire hose 50 are aligned, and after connecting the discharge end 52 and the intake end 51 as shown in Fig. 18, a protective member 60 is wrapped around the discharge end 52 and the intake end 51. At this time, the protective member 60 is positioned so that the partition 62 of the protective member 60 is parallel to the longitudinal direction of the discharge end 52 and the intake end 51, and the protective member 60 is wrapped around the metal parts so that the protective member 60 surrounds the periphery of the metallic discharge end 52 and the intake end 51. Then, as shown in Fig. 19, the center of the width of the wrapped protective member 60 is tied with string 65, and further, the opening of the protective member 60 is tied with string 66.

[0036] Thereafter, the fire hose 50 prepared as shown in Figure 20 and the discharge end 52 and the water intake end 51 around which the protective member 60 is wound are placed in the cleaning tank 20 together with the silicone sheet 21 as a cushioning material, and the fire hose 50, the discharge end 52 and the water intake end 51 are cleaned by the agitated flow of cleaning liquid.

[0037] In this embodiment, the fire hose 50 is cleaned while exposed to the cleaning liquid in the cleaning tank 20, and the discharge end 52 and the water intake end 51 are cleaned while surrounded by a silicone sheet 61 and a protective member 60 (a mesh net bag). At this time, the cleaning liquid permeates the mesh bag (protective member 60) and the silicone sheet 61 and reaches the outer surfaces of the discharge end 52 and the water intake end 51. Therefore, even though the discharge end 52 and the water intake end 51 are surrounded by the protective member 60 and the silicone sheet 61, they are sufficiently cleaned by the cleaning liquid. Furthermore, because the discharge end 52 and the water intake end 51 are surrounded by the protective member 60 which contains the silicone sheet 61 as a buffer material, the heavy and rigid discharge end 52 and the water intake end 51 will not be damaged even if they collide with each other or with the wall of the cleaning tank when exposed to the agitating flow in the cleaning tank 20. [Industrial Applicability]

[0038] According to the present invention, irregularly shaped objects such as firefighter helmets and facepieces, which have complex shapes and are at risk of being scratched or deformed due to collisions when washed in a cleaning tank, can be washed without scratching or deformation by using cushioning materials such as mesh nets and silicone sheets.Furthermore, multiple irregularly shaped objects can be washed simply and quickly by simply placing them in the cleaning tank in a simple manner similar to washing clothes in a home washing machine or at a laundromat, etc., which can significantly reduce the incidental work of firefighters in, for example, a fire station.The same applies to cleaning fire boots and fire hoses, and is extremely useful in reducing work that firefighters do not otherwise have to do. [Explanation of symbols]

[0039] 1: Helmet 2: Small bag (mesh net) 3, 13, 42: (Line) Zipper 4, 14: Lid 5,6,15,16,21: Silicone sheet 12: Large bag (mesh net) 20: Cleaning tank 30: Face 40: Fire protection shoes 41: Mesh bag 50: Fire hose 51: Water intake end 52: Discharge end 60: Protective material 61: Silicone sheet 62: Partition 65,66: String

Claims

1. A method for cleaning irregularly shaped objects, comprising: A sponge-like cushioning material is placed in a net-shaped first bag having an opening, and the irregular-shaped object to be cleaned is placed in the first bag, and then another sponge-like cushioning material is placed on top of the irregular-shaped object, and the opening of the first bag is closed. a second bag having a net shape larger than the first bag and an opening, a sponge-like bottom cushioning material is placed at the bottom of the second bag, and side wall cushioning materials are placed around the bottom cushioning material; the first bag containing the irregularly shaped object is placed in the space surrounded by the bottom cushioning material and the side wall cushioning materials; and the opening of the second bag is closed; Then, a plurality of irregularly shaped objects stored in the second bag are loaded into a cleaning tank, buffer material is loaded into the cleaning tank, and the irregularly shaped objects are agitated together with water and cleaning liquid in the cleaning tank to clean the irregularly shaped objects.

2. 2. The method for cleaning irregularly shaped objects according to claim 1, wherein the irregularly shaped object is a firefighter's helmet or a firefighter's facepiece.

3. In a method for cleaning fire-resistant boots as irregular objects, The fire boots are placed in a mesh bag having an opening, Then, a plurality of fire boots stored in the bag are placed in a cleaning tank, and cushioning material is placed in the cleaning tank, and the fire boots are agitated together with water and cleaning liquid in the cleaning tank to clean the fire boots.

4. In a method for cleaning a fire hose as an irregular object, A mesh bag is provided with a plurality of partitions, and a plurality of bag sections are arranged in one direction. A buffer material is placed into each bag section through the opening of the mesh bag. The mesh bag containing the buffer material is then wound around a metal fitting of a fire hose. The mesh bag is then fixed to the metal fitting with a string. A method for cleaning irregularly shaped objects, comprising: loading a plurality of fire hoses, each having a mesh bag wrapped around the metal fitting, into a cleaning tank; loading a buffer material into the cleaning tank; and stirring the hoses together with water and cleaning liquid in the cleaning tank.

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