TWI802967B - Polishing sponge - Google Patents

Abstract

The present disclosure provides a polishing sponge capable of polishing a polished surface with high precision. The polishing sponge (10) has a sponge body (11) having a polishing surface (11a) and an upper surface on the opposite side of the polishing surface (11a), a clay-like polishing composition (12) immersed in the polishing surface (11a), and a hand-held portion (13) disposed on the opposite side of the polishing surface (11a) and harder than the sponge body (11). On the polishing surface (11a) of the sponge body (11), a plurality of incisions (11c) is formed all over from either end (11d) of the polishing surface (11a) to the end (11e) on the opposite side to the end (11e), and the plurality of the incisions is toward the inside of the sponge body (11). The plurality of incisions may remove the tiny protrusions and paint mist attached to the surface of the vehicle body when the vehicle body is cleaned.

Description

Polishing Sponge Pad

This application relates to a polishing sponge pad for removing deposits adhering to painted surfaces and the like.

Various pollutants, such as paint mist and iron powder, adhere to the surfaces of the body of automobiles, etc., and machinery installed outdoors. Among such pollutants, tiny protrusions such as iron powder will bite into the painted surface, and eventually the metal material under the painted surface will be corroded. As an example of means for removing such fine protrusions without damaging the painted surface, Patent Document 1 describes a polishing towel in which a plastic soft grindstone of a clay-like composition is impregnated in a terry cloth.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2020-189035

The above-mentioned polishing towel impregnated with plastic soft grindstone can obtain high polishing power because the surface of the towel cloth is relatively hard, but it is difficult to polish the painted surface with high precision. In addition, it is also difficult to change the polishing force to increase or decrease. For example, in the cleaning of high-end cars, etc., there is a demand and desire to clean the painted surface of the car body without causing a slight damage. Therefore, it is necessary to develop a polishing method that can polish the painted surface with high precision.

The object of the present application is to provide a polishing sponge pad capable of polishing a surface to be polished with high precision.

The polishing sponge pad of the present application has: a sponge body having a first surface and a second surface opposite to the first surface; and a clay-like polishing composition impregnated on the first surface, from which Slits facing the inside of the sponge main body are formed extending from any end portion of one surface to the end portion opposite to the end portion.

According to the present application, the surface to be polished can be polished with high precision. Moreover, the polishing force of the polishing sponge pad can be adjusted to be enhanced or weakened.

Hereinafter, embodiments of the present application will be described in detail using the drawings.

The structure of the polishing sponge pad 10 of this embodiment will be described. As shown in FIGS. 1 to 4 , the polishing sponge pad 10 of the present embodiment has: a sponge body 11 having a polishing surface (first surface) 11 a as a lower surface and a polishing surface on the opposite side to the polishing surface 11 a. The upper surface (second surface) 11b; and the clay-like polishing composition 12 impregnated on the polishing surface 11a. In addition, the polished surface 11a is a surface for polishing a surface to be polished such as a painted surface, while the upper surface 11b shown in FIG. 4 is a surface located on the handle side.

Further, on the polishing surface 11a of the sponge body 11, notches 11c facing the inside of the sponge body 11 are formed extending from any end 11d of the polishing surface 11a to an end 11e opposite to the end. In addition, although the notch 11c is formed toward the inside of the sponge body 11 along the thickness direction T of the sponge body 11 , it does not reach the upper surface 11b but ends inside the sponge body 11 . The notch 11c is formed so that the edges at the end 11d and the end 11e of the polishing surface 11a are not connected, and the notch 11c is visible also on the side surface of the sponge main body 11 . In addition, it is preferable that a plurality of notches 11c are formed along the same direction with each other on the polishing surface 11a. Three cutouts 11c are formed in a manner.

Furthermore, in the polishing sponge pad 10, the sponge main body 11 is substantially rectangular parallelepiped. Therefore, the polishing surface 11a and the upper surface 11b are rectangular, and three notches 11c formed on the polishing surface 11a are formed along the longitudinal direction L of the rectangular polishing surface 11a.

Here, the sponge main body 11 is produced by foam-molding a synthetic resin such as polyurethane, for example. Furthermore, since the polishing surface 11 a is impregnated with the clay-like polishing composition 12 , the sponge main body 11 is an open-cell body through which liquid and gas can permeate. In addition, the immersion depth of the clay-like polishing composition 12 in the polishing surface 11 a of the sponge main body 11 is not limited, but is preferably, for example, 2 mm to 3 mm. When the immersion depth of the clay-like polishing composition 12 is less than 2 mm to 3 mm, the amount of adhesion of the clay-like polishing composition 12 to the surface to be polished during polishing also decreases, and during polishing, the sponge body 11 includes the polishing surface 11 a. The buffing force at the time of crimping the inner single sheet portion 11f (refer to FIG. 6 ) is insufficient.

On the other hand, when the impregnation depth of the clay-like polishing composition 12 is greater than 2 mm to 3 mm, the amount of the clay-like polishing composition 12 impregnated into the open cells of the sponge main body 11 is too much, and the open cells become hard, and the polishing process becomes difficult. It will cause damage to the polished surface. Therefore, the immersion depth of the clay-like polishing composition 12 is preferably 2 mm to 3 mm. In addition, the method of impregnating the clay-like polishing composition 12 into the sponge main body 11 is to dissolve the clay-like polishing composition 12 with a solvent, make it impregnated into the polishing surface 11a of the sponge main body 11, and then only Let the solvent evaporate.

Also, the depth (cut amount) of the cut 11c in the polishing surface 11a is preferably sufficiently greater than the immersion depth of the clay-like polishing composition 12 by 2 mm to 3 mm.

Furthermore, in the buffing sponge pad 10 , a plate-shaped handle 13 that is harder than the sponge main body 11 is fixed to the upper surface (second surface) 11 b of the sponge main body 11 . The handle 13 is also formed, for example, by foam molding a synthetic resin such as polyurethane. The hardness of the sponge can be changed by the degree of foaming. The hardness of the handle portion 13 is sufficiently higher than that of the sponge body 11 , which can improve the rigidity of the polishing sponge pad 10 and facilitate the operator to hold it during polishing.

Next, the clay-like polishing composition 12 impregnated in the sponge main body 11 will be described. The "clay" in the clay-like polishing composition 12 is "a plastic and viscous substance composed of fine weathering particles", or it can also be said to be "a deposit composed of fine particles". Furthermore, the clay-like polishing composition 12 of the present embodiment includes a plastic soft base material 12 a and polishing particles 12 b shown in FIG. 7 described later. As the plastic soft base material 12a, a clay-like substance made of a resin or the like can be used, for example, a resin such as polyolefin or polyolefin polyol can be used. Polyolefin polyols are polymers or copolymers of diene monomers having hydroxyl groups at molecular terminals or in molecular chains and their hydrogenated products. Moreover, as a polyolefin, polybutene, polyisobutylene, etc. can be illustrated, for example. Those having hydroxyl groups at molecular terminals or in molecular chains, such as polybutene and polyisobutylene, can also be used.

Furthermore, as the polishing particles 12b, a material with relatively high hardness is preferable, for example, calcium carbonate, quartz, silicon carbide (corundum), compound, ceramics, green silicon carbide, etc. can be used. Calcium carbonate is particularly preferably used. The average particle size of the polishing particles 12 b is preferably made, for example, 2 um to 50 um. The reason is that when the particle size is less than 2 μm, the polishing force is insufficient, and when the particle size is greater than 50 μm, the surface (painted surface) 14a of the vehicle body 14 shown in FIG. 5 may be scratched and fine damage may remain. possible. The polishing particles 12b are preferably added in 50 to 100 parts by weight, more preferably 70 to 80 parts by weight, relative to 100 parts by weight of the clay-like polishing composition.

In addition, the clay-like polishing composition 12 may contain other additives (fillers, pigments, fragrances, etc.). As the filler, for example, inorganic powders such as talc, clay, kaolin, silica, aluminum hydroxide, alumina, bentonite, diatomaceous earth, titanium oxide, glass, silica, or polyurethane, polypropylene, nylon, Organic powders, fibers, and mixtures of urea resins, phenolic resins, and polyurethane resins.

Next, a method of using the polishing sponge pad 10 of this embodiment will be described. The method of using the polishing sponge pad 10 is not limited, but as an example, it can be used for cleaning (polishing) the surface (painted surface) 14a of the body 14 of an automobile as shown in FIG. 5 . In the vehicle body 14, even after washing the car, there remain minute protrusions (1mm or less in height and 1mm or less in width) 15a shown in FIG. 7 that cannot be removed by detergent or the like. The fine protrusions 15a as described above are pollutants such as iron powder. For example, the fine protrusions 15 a are removed by gently wiping the surface 14 a of the vehicle body 14 with the polishing sponge pad 10 while spraying water on the surface (painted surface) 14 a of the vehicle body 14 . In addition, water drops 16 remain on the surface 14a of the vehicle body 14 sprayed with water.

In the polishing sponge pad 10, by forming the notch 11a on the polishing surface 11a of the sponge main body 11, during cleaning (polishing), as shown in FIG. Simultaneously with the edge (distortion) P, the polishing particles 12b move, and the polishing force increases. However, in the polishing sponge pad 10 of this embodiment, since the soft sponge main body 11 is impregnated with the clay-like polishing composition 12, smooth polishing can be performed without causing damage to the surface (painted surface) 14a. In the case of damage, the microprotrusion 15a is removed. In addition, the polishing force can also be changed by increasing or decreasing the depth of the cutouts 11c formed in the sponge main body 11 and the number of the cutouts 11c.

Here, the curling (twisting) phenomenon of the individual pieces 11 f of the sponge main body 11 in the polishing sponge pad 10 will be described. As shown in FIG. 6, when the polishing sponge pad 10 is moved along the moving direction Q, curling (twisting) occurs in the individual pieces 11f of the sponge unitized due to the existence of the cutout 11c (see FIG. 2). ) P. By this curling (twist) P, each individual piece part 11f becomes the state which inclines and the edge part 11g stands up. Then, as the polishing sponge pad 10 is moved in the moving direction Q, the individual piece portions 11f in a state where the edge portion 11g becomes inclined and the edge portion 11g stands up sequentially appear. Thereby, the polishing force of the polishing sponge pad 10 can be increased compared to the case where the entire surface is used for polishing. In addition, since the sponge is much softer than a towel, smooth polishing can be performed without damaging the surface 14 a of the vehicle body 14 .

Also, the polishing particles 12b move while curling (twisting) P occurs. As shown in FIGS. 7( a ) and 7 ( b ), as the clay-like polishing composition 12 moves in the moving direction Q, the polishing particles 12 b also move, and the polishing force increases. Thereby, the fine protrusion 15a can be removed from the surface (painted surface) 14a of the vehicle body 14 as shown in FIG.7(b). At this time, in the polishing sponge pad 10 of this embodiment, since the clay-like polishing composition 12 is impregnated on the polishing surface 11a of the soft sponge main body 11 as described above, smooth polishing can be performed, and it is possible to perform polishing without any damage to the vehicle. When the surface 14a of the body 14 is damaged, the microprotrusion 15a is removed. In addition, paint mist 15b can also be removed.

Thus, according to the polishing sponge pad 10 of the present embodiment, by forming the notch 11c on the polishing surface 11a of the sponge main body 11, curling (twist) P occurs on the single piece portion 11f of the sponge main body 11 during polishing, Therefore, polishing can be performed smoothly, and the fine protrusions 15a can be removed without damaging the surface (painted surface) 14a. In other words, the surface (painted surface) 14a can be polished with high precision. As a result, the surface 14a of the vehicle body 14 can be cleaned without any slight damage, and the requirements and expectations of high-end car users can be met.

In addition, the minute protrusions 15a cannot be easily removed in a normal car washing process. The tiny protrusions 15a are formed by various reasons such as PM2.5 or yellow sand in addition to the above-mentioned iron powder. In particular, recent brake shoes are made of hardened steel wool, and the vehicle body 14 is likely to be contaminated with iron powder. Thus, since the microprotrusions 15 are formed due to various reasons, it is difficult to perform chemical removal such as dissolution in accordance with the composition of the microprotrusions 15a.

On the other hand, according to the polishing sponge pad 10 of this embodiment, the fine protrusions 15a can be removed by the curling (torsion) phenomenon of the polishing surface 11a of the sponge main body 11 regardless of the physical properties of the substance forming the fine protrusions. In any case, the surface 14 a of the vehicle body 14 can be ground with high precision without damaging the surface 14 a of the vehicle body 14 . Furthermore, the paint mist 15b adhering to the surface 14a can also be removed. That is, the surface 14a of the vehicle body 14 can be cleaned (polished) with high precision.

Moreover, since the polishing force can be changed by increasing or decreasing the depth of the cutout 11c formed on the sponge main body 11 and the number of the cutouts 11c, the polishing force of the polishing sponge pad 10 can be adjusted to be enhanced or weakened. .

Moreover, since the sponge main body 11 is a substantially rectangular parallelepiped, the polishing sponge pad 10 is also substantially rectangular parallelepiped and has a relatively elongated shape. Therefore, the operator can firmly grasp the polishing sponge pad 10 and can easily clean it. The wiping action of the polishing sponge pad 10 at the time.

Furthermore, since the handle portion 13 harder than the sponge body 11 is fixed to the sponge body 11 , the rigidity of the polishing sponge pad 10 can be increased, and it is easy for the operator to grasp during polishing. As a result, high-precision polishing can be continued without weakening the polishing force even if continuous wiping operations are performed.

Next, a polishing sponge pad 10 according to a modified example of the present embodiment will be described. The polishing sponge pad 10 of the modified example shown in FIG. 8 has a structure in which the polishing surface (first surface) 11a is rectangular, and a plurality of notches 11c are formed along the longitudinal direction L and the short direction M of the rectangle.

Thereby, since many individual pieces 11f are formed by the polishing surface 11a (see FIG. 6 ), the polishing force can be increased, and the surface (painted surface) 14a of the vehicle body 14 can be polished with higher precision.

This application is not limited to the said embodiment, Various changes are possible in the range which does not deviate from the summary of this application.

For example, in the above embodiment, the case where the plurality of notches 11c are formed on the polishing surface 11a of the sponge main body 11 has been described, but at least one notch 11c may be formed on the polishing surface 11a.

Moreover, the shape of the sponge main body 11 is not limited to a rectangular parallelepiped, and may be, for example, a disc shape in which the polishing surface 11a is circular.

Moreover, in the above-mentioned embodiment, the cleaning (polishing) of the surface (painted surface) 14a of the vehicle body 14 has been described as an example. Cleaning (polishing) of parts other than 14 (such as windshield, tire wheels, etc.). Furthermore, it can also be applied to cleaning (polishing) of various items such as vehicles other than automobiles (for example, railway vehicles), machinery installed outdoors, and window glass of buildings.

Furthermore, in the above-mentioned embodiment ( FIG. 7 ), the cross section of the polishing grain 12 b is shown as a triangular shape, but the shape of the polishing grain 12 b is not limited, and for example, spherical, columnar, and other shapes may be used.

10:Polishing sponge pad 11:Sponge body 11a: Polished surface (1st surface) 11b: Upper surface (side 2) 11c: Incision 11d, 11e: end 11f: single slice 11g: Edge 11h, 11i: end 12: Clay-like polishing composition 12a: Plastic soft substrate 12b: Particles for polishing 13:Handheld part 14: car body 14a: Surface (painted surface) 15a: tiny protrusions 15b: Paint mist 16: Drops of water L: Long side direction M: short side direction P: Curling Q: Direction of movement T: Thickness direction

FIG. 1 is a perspective view showing the structure of the handle surface side of the polishing sponge pad according to the embodiment of the present application. FIG. 2 is a perspective view showing the structure of the polishing surface side of the polishing sponge pad shown in FIG. 1 . Fig. 3 is a rear view showing the structure of the polishing surface shown in Fig. 2 . Fig. 4 is a front view showing the structure of the polishing sponge pad shown in Fig. 1 . Fig. 5 is a partial perspective view showing how to use the polishing sponge pad shown in Fig. 1 . FIG. 6 is a schematic diagram showing curling in the polishing sponge pad shown in FIG. 1 . 7( a ) and FIG. 7( b ) are partially enlarged views schematically showing an aspect in which minute protrusions are removed. 8 is a perspective view showing the structure of a polishing sponge pad according to a modified example of the present application.

10:Polishing sponge pad

11:Sponge body

11a: Polished surface (1st surface)

11c: 1 cut

11d, 11e: end

12: Clay-like polishing composition

13:Handheld part

L: Long side direction

M: short side direction

T: Thickness direction

Claims (7)

A polishing sponge pad, wherein the polishing sponge pad has: a sponge body, the sponge body has a first surface and a second surface on the opposite side of the first surface; and a clay-like polishing composition, which Immersed in the first surface, from any end of the first surface to the end opposite to the end, there is a slit towards the inside of the sponge body; wherein the slit is formed in a grid On the first surface, the sponge body has a plurality of pieces, the plurality of pieces are formed by the cutout, and an edge portion of the plurality of pieces is in a standing state during polishing. The polishing sponge pad as claimed in claim 1, wherein a plurality of the cuts are formed along the same direction. The polishing sponge pad according to claim 2, wherein the first surface is rectangular, and the cutouts are formed in plural along the long side direction of the first rectangular first surface. The polishing sponge pad according to claim 1, wherein the first surface is rectangular, and the cutouts are formed in plural along the long and short sides of the first rectangular first surface. The polishing sponge pad as claimed in claim 3, wherein the clay-like polishing composition comprises a plastic soft substrate and a polishing particle. The polishing sponge pad according to claim 5, wherein the plastic soft substrate contains polyolefin or polyolefin polyol. The polishing sponge pad according to claim 6, wherein a handle part harder than the sponge main body is fixed on the second surface.

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