Plastic soft composition and footing method

Abstract

To provide a novel plastic soft composition facilitating uniform footing even on a curved surface to be processed even with a simple structure without relying on a skill of a workman, and a footing method using the same.SOLUTION: A plastic soft composition 10 comprises: a soft base material 11 having plasticity; a particle polishing material 12 contained in the soft base material 11 and having an average particle size of 10 μm-1.5 mm; and a fiber support material 13 contained in the soft base material and having an average fiber diameter width of 10 μm-1.0 mm. The footing method uses the same.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a plastic flexible composition and a surface treatment method, and in particular to a plastic flexible composition suitable for forming a large number of irregularities on the surface of a treated surface as a pretreatment (surface treatment) for painting the painted surface of an article, and a surface treatment method using the same. [Background technology]

[0002] When painting the surface of an article (such as an automobile body or its components), a pretreatment (surface preparation) is generally performed in which the painted surface (the treatment surface) is uniformly sanded (roughened) before painting in order to improve the adhesion of the primer and paint to the painted surface.

[0003] Conventionally, this surface preparation process has often been carried out by dry or wet sanding using waterproof paper or abrasive cloth. More specifically, as shown in Figs. 4 and 5, a hard wooden holder block 50 or a soft or hard sponge pad 60 is used, and sanding of the entire surface to be treated is performed by attaching sandpaper 52 to a magic sheet 51, to the surface to be treated, before painting. The above process is similar even when the surface to be treated 100 is a curved surface. Figs. 4 and 5 are diagrams for explaining the above surface preparation process, and are side views so that the contact state can be seen.

[0004] In addition, a known example of a foot-attaching abrasive that can efficiently level out the unevenness of the treated surface and improve the appearance of the product is one that comprises a cloth base material, a plurality of three-dimensional elements containing abrasive grains and a binder, and an adhesive layer provided on one side of the cloth base material and bonding the cloth base material and the three-dimensional elements (see, for example, Patent Document 1).

[0005] In addition, although not for surface preparation, a plastic flexible composition is known in which abrasive particles are contained in a flexible substrate having the plasticity for polishing and coating the surface to be treated (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2018-108613 A [Patent Document 2] JP 2010-240751 A Summary of the Invention [Problem to be solved by the invention]

[0007] Furthermore, in recent years, mirror coating is often required on the treated surface 100, which has a complex curved surface. In such cases, high quality is required in the repair work, and the difficulty of the work is known in the sheet metal industry as time-consuming work.

[0008] However, with the above method, it is difficult to perform uniform stepping treatment when the treated surface 100 is a curved surface. That is, by using the hard wooden holder block 50, it is possible to effectively perform uniform stepping treatment on a flat treated surface, but for a curved treated surface, the contact points are limited to specific areas, making it difficult to perform uniform stepping treatment.

[0009] In addition, although the sponge pad 60 with the magic sheet 51 can be adapted to contact the curved surface 100 to be treated, palm pressure is likely to be applied to the fingertips, and the pressure is unevenly applied to the surface to be treated, so it is difficult to perform a uniform foot treatment. Furthermore, when the sponge pad is deformed to follow the curved surface, the pressure increases in the part where the sponge has shrunk, and the pressure is lower in the part where the sponge has not shrunk, so the pressure applied to the surface to be treated becomes uneven (for example, in FIG. 5, the pressure is high in the center of the sponge pad 60, and the pressure at the left and right ends is weaker than the center). Since the polishing force changes depending on the magnitude of the pressure applied to the surface to be treated, it is difficult to perform a uniform foot treatment with these methods.

[0010] The surface preparation process is an important task that determines the quality of the paint finish, and it is required to perform the surface preparation process uniformly, and in particular, when a mirror finish is to be applied, the utmost care must be taken. Therefore, as described above, when it is difficult to perform a uniform surface preparation process on a curved surface to be treated, the surface preparation process needs to be adjusted by a skilled craftsman, and it relies on the personal technique of the craftsman.

[0011] Moreover, the abrasive for footing described in Patent Document 1 aims to make it possible to uniformly distribute the load on the surface to be treated by adjusting the height, shape, arrangement, etc. of the three-dimensional elements that hold the abrasive grains according to the purpose, thereby making it possible to uniformly roughen the surface to be treated. However, it is necessary to prepare a cloth substrate having three-dimensional elements with a predetermined height, arrangement, and shape according to the shape of the surface to be treated, and when the surface to be treated is curved, it is still difficult to keep the pressure on the surface to be treated constant because the substrate is a cloth substrate.

[0012] Furthermore, the plastic flexible composition described in the above Patent Document 2 is intended to perform polishing and coating treatments without damaging the painted surface, and is not intended for surface preparation treatments.

[0013] Therefore, the present invention aims to provide a novel plastic flexible composition that does not rely on the craftsmanship described above, has a simple structure, and makes it easy to perform a uniform foot treatment even on a curved surface. [Means for solving the problem]

[0014] The plastic flexible composition for foot application of the present invention comprises a plastic flexible substrate, a particulate abrasive material contained in the flexible substrate and having an average particle size of 10 μm or more and 1.5 mm or less, and a fibrous support material contained in the flexible substrate and having an average fiber diameter of 10 μm or more and 1.0 mm or less.

[0015] The foot-attaching treatment method of the present invention comprises the steps of contacting a plastic flexible composition with a surface to be treated and applying pressure to plastically deform the composition so that the composition conforms to the shape of the surface to be treated, and rubbing the plastic flexible composition in contact with the surface to be treated along the surface to be treated, thereby foot-attaching the plastic flexible composition to the surface to be treated. The plastic flexible composition comprises a flexible substrate having plasticity, a particulate abrasive material contained in the flexible substrate and having an average particle size of 10 μm or more and 1.5 mm or less, and a fibrous support material contained in the flexible substrate and having an average fiber diameter of 10 μm or more and 1.0 mm or less. Effect of the Invention

[0016] According to the plastic flexible composition and footing treatment method of the present invention, it is possible to provide a novel plastic flexible composition and footing treatment using the same, which has a simple configuration but makes it easy to perform footing treatment uniformly, even if the surface to be treated is curved. [Brief description of the drawings]

[0017] [Figure 1] 1 is a diagram showing a schematic configuration of a plastic flexible composition according to one embodiment of the present invention. [Diagram 2] 1A to 1C are diagrams illustrating a method for performing a step treatment on a surface to be treated using a plastic softening composition according to one embodiment of the present invention. [Diagram 3] FIG. 1 is a diagram showing a schematic configuration of a plastic flexible composition according to one embodiment of the present invention when fixed to an abrasive device. [Figure 4] 1A and 1B are diagrams illustrating a conventional method for treating a surface to be treated using a wooden holder block. [Diagram 5] 1A and 1B are diagrams illustrating a conventional method for performing a foot treatment on a surface to be treated using a sponge pad. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] In the following embodiments, for convenience, when necessary, the embodiments will be divided into multiple sections or embodiments, but unless otherwise expressly stated, they are not unrelated to each other and one may be a partial or complete variation, detail, supplementary explanation, etc. of the other.

[0019] In addition, in the following embodiments, when referring to the number of elements (including the number, numerical values, quantities, ranges, etc.), unless specifically stated or clearly limited to a specific number in principle, the number is not limited to that specific number and may be more than or less than the specific number.

[0020] Furthermore, in the following embodiments, the components (including element steps, etc.) are not necessarily essential unless otherwise specified or considered to be obviously essential in principle, etc. Furthermore, when a component, etc. in the examples is described as "consisting of A" or "made of A," it goes without saying that other elements are not excluded, except when it is specifically specified that only that element is included, etc.

[0021] Similarly, in the following embodiments, when referring to the shapes, positional relationships, etc. of components, etc., it is intended to include those that are substantially similar or similar to those shapes, etc., unless otherwise specified or considered to be clearly different in principle. The same applies to the above numerical values ​​and ranges.

[0022] In addition, when referring to materials, etc., unless otherwise specified or in principle or circumstances, the identified materials are the main materials and do not exclude secondary elements, additives, additional elements, etc.

[0023] In addition, in all the drawings for explaining the present embodiment, components having the same functions are generally given the same reference numerals, and repeated explanations thereof will be omitted.

[0024] In addition, in the drawings used in the present embodiment, even plan views may be partially hatched to make the drawings easier to see.

[0025] Hereinafter, a plastic soft composition and a method for surface preparation treatment according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0026] [Plastic soft composition] Fig. 1 is a diagram for explaining the schematic structure of the plastic flexible composition of the present embodiment. As shown in Fig. 1, the plastic flexible composition 10 is composed of a plastic flexible substrate 11, a particulate abrasive 12 contained in the flexible substrate 11, and a fibrous support material 13. Each component constituting the plastic flexible composition 10 will be described in detail below.

[0027] <Flexible base material> The flexible substrate 11 used here is a flexible substrate having plasticity. The flexible substrate 11 is a material having plasticity at least when in use, and may be formed from a material having plasticity at all times, whether in use or not. In addition, since water is often sprayed on the surface to be treated during use, the flexible substrate 11 may be a material that exhibits plasticity when in contact with water. Examples of the material of the flexible substrate 11 include petroleum-based resins such as polyolefin polyol, polybutene, butyl rubber, and the like.

[0028] Since this flexible substrate 11 has plasticity, when it is brought into contact with the surface to be treated and pressure is applied to perform the padding treatment, this flexible substrate 11 undergoes plastic deformation to conform to the shape of the surface to be treated, thereby ensuring good contact with the surface to be treated.

[0029] In addition, since the plastic flexible composition 10 of the present embodiment has the flexible substrate 11 as a main component, it can be easily deformed into any shape. Although a rectangular parallelepiped shape is shown as an example in Fig. 1, the shape is not limited to this, and the user can deform the composition into any shape, just like handling clay.

[0030] <Particulate abrasive> The particulate abrasive 12 used here is an abrasive for carrying out the surface preparation process, and is mixed with the above-described flexible substrate 11 and dispersed in the flexible substrate 11. In this embodiment, the particulate abrasive 12 is an essential component of the abrasive, but other abrasives may also be contained.

[0031] This particulate abrasive 12 is used to perform a footing treatment on the treated surface, and must be blended so that part of the particulate abrasive 12 is exposed from the surface of the flexible substrate 11. If the particulate abrasive 12 is not exposed, the footing treatment cannot be performed sufficiently.

[0032] By exposing the particulate abrasive 12 from the surface in this way, the surface can be subjected to a step-finishing treatment by repeatedly pressing and rubbing the surface to be treated (rubbing). The type and amount of particulate abrasive 12 can be changed in various ways depending on the type of surface to be treated and the desired state of the step-finishing treatment.

[0033] The particulate abrasive 12 used here is a particulate abrasive for roughening the surface of the workpiece, and any particulate abrasive known in the art can be used as this type of abrasive without any particular limitations. The particulate abrasive 12 is preferably one having a relatively high hardness of 8 or more on the new Mohs hardness scale.

[0034] Examples of the particulate abrasive 12 include alumina particles such as blast abrasives (fused alumina), calcium carbonate, quartz, emery (silicon carbide), ceramics, green carborundum, glass beads, etc., and it is sufficient to include at least one type selected from these particles. In other words, these particulate abrasives may be used alone or in combination of two or more types.

[0035] Blasting abrasives are white fused alumina abrasives with a high alumina content, and are composed of aluminum oxide as a chemical component. Blasting abrasives are often used for sandblasting and as general abrasives (New Mohs hardness: 12, Knoop hardness: HK2050, True specific gravity: 3.97g / cm 3 , Bulk density: 1.60~1.80g / cm 3 ) Emery is a particle made of silicon carbide and is a well-known abrasive used as a polishing agent (Mohs hardness scale: 10).

[0036] As described above, the particulate abrasive 12 is used for performing the step-finishing treatment, and is mixed and dispersed in the plastic flexible composition, with a part of the particulate abrasive 12 being exposed on the surface of the plastic flexible composition. By exposing the particulate abrasive 12 in this manner, the plastic flexible composition can be brought into contact with the surface to be treated and rubbed to perform step-finishing on the surface to be treated.

[0037] In order to exert the above-mentioned effect, the particulate abrasive 12 has an average particle size of 10 μm or more and 1.5 mm or less, and preferably has an average particle size of 30 μm or more and 1.5 mm or less. Furthermore, the average particle size is preferably 10 μm or more and 500 μm or less, and more preferably 20 μm or more and 300 μm or less. If the average particle size is smaller than 10 μm, there is a risk that sufficient footing cannot be performed, and if the average particle size is larger than 1.5 mm, there is a risk that footing becomes too deep or the dispersibility of the particulate abrasive becomes insufficient. Here, the average particle size is a value measured by a laser diffraction / scattering method.

[0038] <Fibrous support material> The fibrous support material 13 used here is a material that supports the particulate abrasive 12 described above, and is mixed with the flexible substrate 11 described above and is dispersed within the flexible substrate 11.

[0039] The fibrous support material 13 used here is not particularly limited as long as it has the above-mentioned function. Also, conventionally known fibrous abrasives can be used as the fibrous support material 13. When a fibrous abrasive is used, it is preferable that the fibrous abrasive can support the particulate abrasive 12 and also perform a step treatment on the surface to be treated. As the fibrous abrasive, for example, a metallic fibrous abrasive such as steel wool, stainless wool, or curlcate is preferable.

[0040] Steel wool is known as an iron abrasive used in polishing and finishing of industrial products, and there are various types such as No. 0000 extra fine, No. 000 extra fine, medium fine, fine, coarse, medium coarse, extra coarse, No. 5 extra extra coarse, etc. Curlcate is an abrasive made of copper, and stainless steel wool is an abrasive made of stainless steel.

[0041] As described above, the fibrous support 13 has the function of supporting the particulate abrasive 12 with the fibers of the fibrous support 13. This makes it possible to adjust the time during which the particulate abrasive 12 falls off from the plastic flexible composition 10 to the outside and is exposed from the inside of the plastic flexible composition 10 to the outer surface when the foot-dipping treatment is continued with the plastic flexible composition 10.

[0042] For example, in a cross-sectional view perpendicular to the length direction (fiber length direction) of the fibrous support material 13, if the width perpendicular to the thickness (about 3 μm) of the fibrous support material 13 is called the "fiber diameter width", in order for this fibrous support material 13 to exert the above-mentioned effect, the average fiber diameter width is 10 μm or more and 1.0 mm or less. Furthermore, the average fiber diameter width is preferably 10 μm or more and 500 μm or less, and more preferably 20 μm or more and 300 μm or less. If the average fiber diameter width is smaller than 10 μm, it may be easily deformed and the supporting effect of the particulate abrasive 12 may be insufficient, and if the average fiber diameter width is larger than 1.0 mm, it may be difficult to deform, and the effect of the plastic flexible composition 10 to follow the curved surface shape of the treated surface may be hindered.

[0043] The average fiber length of the fibrous support material 13 is preferably 5 mm or more and 30 mm or less, and more preferably 10 mm or more and 20 mm or less.

[0044] <Mixing ratio> As described above, the plastic flexible composition of this embodiment is prepared by mixing particulate abrasive 12 and fibrous support material 13 in a flexible substrate 11, and dispersing and containing these components in the flexible substrate.

[0045] Here, the blending amount of the particulate abrasive 12 is 5 parts by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the flexible substrate. Furthermore, the blending amount of the particulate abrasive 12 is preferably 10 parts by mass or more and 40 parts by mass or less, more preferably 20 parts by mass or more and 30 parts by mass or less, with respect to 100 parts by mass of the flexible substrate. By mixing the particulate abrasive 12 into the flexible substrate 11 at such a blending ratio, a part of the particulate abrasive 12 is exposed on the surface of the flexible substrate 11, and a configuration preferable for polishing applications can be obtained.

[0046] Here, the blending amount of the fibrous support material 13 is 2 parts by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the flexible substrate. Furthermore, the blending amount of the fibrous support material 13 is preferably 2 parts by mass or more and 5 parts by mass or less, and more preferably 3 parts by mass or more and 4 parts by mass or less, with respect to 100 parts by mass of the flexible substrate. By mixing the fibrous support material 13 into the flexible substrate 11 at such a blending ratio, the particulate abrasive 12 can be supported by the fibers in the flexible substrate 11.

[0047] Furthermore, the blend ratio of the particulate abrasive 12 to the fibrous support material 13 is preferably in the range of 10:2 to 10:4 by mass ratio, and more preferably in the range of 10:2.5 to 10:3. By setting the blend ratio within the above range, a good balance between the abrasive action and the abrasive support action can be achieved.

[0048] [How to process the footing] Next, a method for performing a footing treatment on a surface to be treated using the above-described plastic soft composition will be described with reference to Fig. 2. Fig. 2 is a diagram for explaining this footing treatment method, and is a side view so that the contact state can be seen.

[0049] As shown in FIG. 2, the foot treatment method of this embodiment involves first contacting the above-mentioned plastic flexible composition 10 with the surface 100 of the article to be treated, and then applying pressure to plastically deform the composition so that it conforms to the shape of the surface to be treated (plastic deformation process).

[0050] At this time, the flexible substrate 11 undergoes plastic deformation in accordance with the shape of the surface 100 to be treated. Therefore, even if the surface 100 to be treated has a curved surface, the flexible substrate 11 can easily deform into a shape in accordance with the curved shape, thereby ensuring a uniform contact state with the surface 100 to be treated.

[0051] In addition, in order to facilitate the plastically flexible composition 10 deforming to conform to the shape of the treated surface 100, the plastically flexible composition 10 can be heated during this plastic deformation process.

[0052] After the above-mentioned plastic deformation, the plastic flexible composition 10 is rubbed along the surface 100 to be treated, thereby performing a step of forming projections and recesses on the surface 100 to be treated (step of step of forming projections and recesses).

[0053] In addition, in this surface preparation process, each of the above steps is carried out after spraying water or the like on the surface 100 to be treated. In this way, by having water on the surface of the surface 100 to be treated, chips (shavings) generated during the surface preparation process can be washed away together with the water, and the surface preparation process can be carried out efficiently.

[0054] At this time, as described above, the particulate abrasive 12 contained in the plastic flexible composition 10 is exposed from the surface of the flexible substrate 11. Therefore, by rubbing the plastic flexible composition 10 in contact with the surface 100 to be treated, the particulate abrasive 12 exposed on the surface of the plastic flexible composition 10 forms unevenness on the surface 100 to be treated, thereby performing a foot treatment.

[0055] At this time, the particulate abrasive 12 is contained and held in the flexible substrate 11, and unlike the conventional method, the particulate abrasive 12 is not fixed, and can be polished while rolling. In addition, at this time, some of the chips are taken into the flexible substrate 11, but most of them are discharged and removed from between the treated surface 100 and the plastic flexible composition 10 together with the water on the treated surface 100.

[0056] In addition, at this time, the fibrous support material 13 acts to support the particulate abrasive 12 within the flexible substrate 11, thereby preventing the particulate abrasive 12 from falling off to the outside of the plastic flexible composition 10 while moving within the flexible substrate 11, and also enables the attachment effect of the plastic flexible composition 10 to be maintained for a long period of time.

[0057] The surface of the article is not particularly limited, and may be made of various materials such as metal, wood, resin, stone, etc. In this specification, the term "footprinting" includes footprinting as a pretreatment for a painting process, as well as a treatment for simply scratching the surface of an article without painting. A typical example of this footprinting method is footprinting performed as a pretreatment for the surface to be painted, such as the body of an automobile or its components.

[0058] (Variation 1) The plastic soft composition 10 may further contain an active agent having a cleaning effect in the flexible substrate 11. By incorporating an active agent having a cleaning effect in this manner, the surface to be treated can be simultaneously cleaned with the active agent during the surface treatment.

[0059] By carrying out the foot treatment while washing in this way, the treated surface can be kept clean immediately after being treated with the plastic flexible composition 10, so that the next painting process can be carried out immediately. For example, if oil stains are attached to the treated surface 100, the oil stains themselves cannot be removed by the foot treatment, but by including the above-mentioned activator, the oil stains can be effectively removed.

[0060] When this surfactant having a cleaning effect is blended, the blending amount is preferably 0.2 parts by mass or more and 0.5 parts by mass or less, and more preferably 0.2 parts by mass or more and 0.3 parts by mass or less, per 100 parts by mass of the flexible substrate in order to effectively exert the cleaning effect.

[0061] (Variation 2) The plastic flexible composition 10 may further contain a water-soluble softening component as a part of the flexible substrate 11. Examples of the softening component include natural clay.

[0062] By blending a water-soluble softening component in this manner, when the softening component is exposed on the surface of the flexible substrate 11 during the continuous surface preparation work, the softening component dissolves in the water sprayed on the surface 100 to expose new particulate abrasive 12 on the surface of the plastic flexible composition 10. It is preferable that this softening component has plasticity.

[0063] In this way, the newly exposed particulate abrasive 12 can contribute to the subsequent footing treatment. That is, by adopting the above-mentioned configuration, even after long-term use, the particulate abrasive 12 can be sufficiently exposed to the surface of the plastic flexible composition 10, and footing performance can be maintained.

[0064] When this softening component is blended, the blending amount is preferably 0.2 parts by mass or more and 1.5 parts by mass or less, and more preferably 0.3 parts by mass or more and 0.8 parts by mass or less, per 100 parts by mass of the flexible substrate in order to effectively exert the above-mentioned effect.

[0065] (Variation 3) The plastic flexible composition 10 may be fixed to an abrasive. The plastic flexible composition 10 is composed of a flexible substrate 11 and a particulate abrasive 12 uniformly dispersed therein, so that a part of the particulate abrasive 12 is exposed from the surface of the flexible substrate 11 not only on the surface that contacts the surface to be treated but also on other surfaces.

[0066] Therefore, if the plastic flexible composition 10 is directly held in the hand and the foot treatment is performed as it is, there is a risk of injuring the palm or fingers. Therefore, in order to be able to use it more safely, it is preferable that the plastic flexible composition 10 is fixed to a polishing machine so that the foot treatment can be performed. Figure 3 shows a schematic configuration of the plastic flexible composition according to the present embodiment when it is fixed to a polishing machine.

[0067] The polishing equipment used here may be any polishing equipment capable of performing footing processing by rotational motion, reciprocating motion, vibration, etc. For example, an example of a polishing equipment capable of performing footing processing by rotational motion is a polishing equipment 20 having a main body 21, a rotary drive shaft 22 extending from the main body 21, and a fixing part 23 attached to the rotary drive shaft 22, as shown in FIG.

[0068] By fixing the plastic flexible composition 10 to the fixing portion 23 of this polishing equipment 20, the plastic flexible composition 10 can be subjected to a foot-attaching treatment on the desired treated surface without having to directly grasp the plastic flexible composition 10 with the hands during foot-attaching.

[0069] The fixing means to the fixing portion 23 can be, for example, fixing by an adhesive layer, or other known fixing methods can be used. EXAMPLES

[0070] Next, the present invention will be described in more detail with reference to examples.

[0071] A plastic flexible composition was produced by mixing 100 g of a flexible base material with polyolefin polyol, 25 g of emery sand having an average particle size of 300 μm as a particulate abrasive, 5 g of steel wool having an average fiber diameter width of 20 μm as a fibrous support material, and 10 g of alumina sand as an additional component.

[0072] After water was sprayed onto the surface of a plate-shaped member of a vehicle coating surface having a curved surface with a curvature of 300R as the treatment surface, the obtained plastic flexible composition was pressed onto the surface by hand to plastically deform it into the shape of the treatment surface. When it was sufficiently adapted to the surface shape, the plastic flexible composition was rubbed and moved along the surface, and this action was repeated about 3 to 5 times to perform a foot treatment.

[0073] A rubber squeegee was used to remove the water from the surface, the treated surface was dried, and the surface after the surface treatment was visually inspected, confirming that the surface treatment had been almost uniform.Furthermore, when the surface roughness was measured using a Mitutoyo surface roughness tester, the average roughness before the measurement was 3μm, but after the treatment it was 3~8μm.

[0074] The present invention is not limited to the above-described embodiments, and the components can be modified without departing from the spirit of the present invention. Various modifications are possible, such as by appropriately combining the multiple components disclosed in the embodiments or adding other known devices. [Explanation of symbols]

[0075] 10 Plastic flexible composition 11 Flexible base material 12 Particulate abrasives 13 Fibrous support material 50 Holder Block 51 Magic Sheet 52 Sandpaper 60 Sponge Pad 100 Treated surface

Claims

1. A flexible substrate having plasticity; A particulate abrasive having an average particle size of 10 μm or more and 1.5 mm or less contained in the flexible substrate; A fibrous support material contained in the flexible substrate and having an average fiber diameter of 10 μm or more and 1.0 mm or less; A plastic flexible composition having the following properties:

2. 2. The plastic flexible composition of claim 1, The flexible substrate is made of a resin material containing at least one member selected from the group consisting of polyolefin polyol, polybutene, and butyl rubber.

3. 2. The plastic flexible composition of claim 1, The particulate abrasive material comprises at least one selected from alumina-based particles, emery, and glass beads.

4. 2. The plastic flexible composition of claim 1, The plastic flexible composition, wherein the fibrous support material comprises at least one material selected from steel wool, curlcate and stainless wool.

5. 2. The plastic flexible composition of claim 1, A plastic flexible composition comprising 5 parts by mass or more and 50 parts by mass or less of the particulate abrasive when the flexible substrate is taken as 100 parts by mass.

6. 6. The plastic flexible composition of claim 5, A plastic flexible composition comprising the fibrous support material in an amount of 2 parts by mass or more and 50 parts by mass or less, based on 100 parts by mass of the flexible substrate.

7. 2. The plastic flexible composition of claim 1, The flexible substrate further comprises an active agent having a cleaning action.

8. 2. The plastic flexible composition of claim 1, The plastically flexible composition is fixed to an abrasive member capable of at least one motion selected from rotation, reciprocation, and vibration.

9. A step of contacting a plastic flexible composition with a surface to be treated and applying pressure to the plastic flexible composition to cause the plastic flexible composition to plastically deform so as to conform to the shape of the surface to be treated; A step of rubbing the plastic soft composition in contact with the treated surface along the treated surface to give a surface to the treated surface, comprising: The plastic flexible composition is a foot treatment method comprising: a flexible substrate having plasticity; a particulate abrasive material contained in the flexible substrate and having an average particle size of 10 μm or more and 1.5 mm or less; and a fibrous support material contained in the flexible substrate and having an average fiber diameter width of 10 μm or more and 1.0 mm or less.

10. 10. The method of claim 9, further comprising the steps of: A surface treatment method, wherein the surface to be treated is the surface of an article made of metal, wood, resin or stone.

11. 10. The method of claim 9, further comprising the steps of: The surface to be treated is a surface to be painted.

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