KR20070020738A - Sandpaper grinding wheel and a methode of making it - Google Patents

Abstract

The present invention relates to a sandpaper polishing wheel and a method of manufacturing the same, wherein the base of the disk, the release paper detachably attached to the back surface of the base by a release agent, and the base are overlapped in an annular manner so as to expose the polishing surface on the surface of the base. By providing sandpaper polishing wheels made of unit sand paper bonded to the paper, the computing power can be improved, and the workability can be greatly improved by delaying the replacement of the polishing wheels, and the waste of resources can be reduced when the sandpaper is defective. Has

Sandpaper, polishing wheel, release paper, adhesive,

Description

Sand paper grinding wheel and manufacturing method thereof {SANDPAPER GRINDING WHEEL AND A METHODE OF MAKING IT}

1 is a perspective view showing the configuration of a conventional sandpaper polishing wheel

Figure 2 is a perspective view showing the configuration of the sandpaper polishing wheel according to the present invention

Figure 3 is a cross-sectional view showing the configuration of the sandpaper polishing wheel according to the present invention

4a to 4d is a process chart showing a manufacturing process of the sandpaper polishing wheel according to the present invention

5 is a plan view of a completed form of the sandpaper polishing wheel according to the present invention

* Explanation of symbols for main parts of drawings *

10: base 20: release paper

30: sandpaper

The present invention relates to a sandpaper polishing wheel and a manufacturing method thereof, and more particularly, to a sandpaper polishing wheel and a method for manufacturing the same, which can reduce grinding force and manufacturing cost by constructing a polishing wheel using sand paper having a paper-based layer. will be.

Korean Patent Publication No. 2000-0000856 discloses "In a known method for manufacturing a large number of sandpaper pieces by adhering to a substrate, a sandpaper piece is formed on a jig in which a shaft hole is formed in the center and a support flange is protruded on the inner and outer circumferential surfaces, respectively. Bonding jig working process and the mesh cloth is placed on the upper surface of the sandpaper piece, the adhesive process is attached to the upper surface of the mesh cloth, and the bonding process of fixing the upper surface of the substrate with the pressing plate and the pressing bolt nut set, and the bonding process The first drying step of drying the finished product for 60 to 90 minutes at room temperature, and the second drying step of cooling the finished product of the first drying process to a temperature of 80 to 90 ℃ by heating products for 80 to 100 minutes and cooling Disclosed is a method for producing a sandpaper disc for polishing, characterized in that the process proceeds sequentially.

In addition, the Republic of Korea Utility Model Registration No. 0377060, "The sand paper assembly formed by stacking a plurality of pieces of sand paper pieces in the circumferential direction, and attached to the outer surface of the sand paper assembly, the groove is formed in the center portion, the center of the bottom surface of the groove portion In the sandpaper laminated abrasive disk for the grinder consisting of a disk-shaped support plate through which the shaft insertion hole into which the rotating shaft of the grinder is inserted, the support plate is made of a resilient bakelite material, the shaft insertion hole of the shaft insertion hole formed in the support plate made of the bakelite material Reinforcement rings are mounted on the edges to reinforce the strength of the edges, respectively, and shaft insert holes on which the reinforcement rings are seated are provided with eyelets in which flange portions for fixing the reinforcement rings are respectively installed on the upper and lower ends. That characterized A sand paper laminated abrasive disk for liner "is disclosed.

However, the conventional sandpaper abrasive disks listed above are cumbersome to use because they have fastening holes formed at the center thereof and are used by being fastened to a dedicated grinder tool and require a relatively high strength of the abrasive disk. Therefore, the substrate or the support plate for supporting the sandpaper abrasive disk as a whole is required to be firm, and thus there is a problem in that the manufacturing cost is increased.

Therefore, in order to solve this problem, as shown in FIG. 1, a sand paper (1) formed by cutting a paper sand paper made by applying an abrasive to a paper into a disk shape, and a polishing disk provided with a release paper (2) on its back side were developed. It is. This removes the release paper 2 and attaches the sandpaper 1 to a dedicated tool using an adhesive layer applied on the backside of the sandpaper.

However, this method has a problem that the grinding force is greatly reduced because the sand paper is composed of a relatively thin paper material and the abrasive is applied to the surface thereof. That is, since the sand paper having a relatively thin thickness is attached to the grinder as it is, the grinding surface of the sand paper comes into contact with the surface of the workpiece at about the same time, so that the wear of the abrasive proceeds relatively quickly, thereby reducing workability.

In particular, this problem is a cause of frequent replacement of the sandpaper, thereby reducing the workability.

In addition, in the case of using the sandpaper of the paper material as described above, when the failure of the sandpaper, the entire sandpaper can not be used was accompanied with a problem that the waste of resources intensified.

On the other hand, in addition to the method of using an adhesive in the method of bonding the sand paper has been developed to install a Velcro tape on the back of the sand paper and the wearing portion of the wear tool to facilitate the detachment, which is the same problem of the adhesive method described above. At the same time, there was a problem of rising manufacturing costs.

The present invention has been made to solve the above problems, the main object is to provide a sandpaper polishing wheel and its manufacturing method which can improve the grinding performance.

Another object of the present invention is to provide a sandpaper polishing wheel and a method of manufacturing the same, which can improve workability by extending the life of the product to increase the replacement cycle.

It is still another object of the present invention to provide a sandpaper polishing wheel and a method of manufacturing the same, which reduce waste of resources by reducing the amount of sandpaper that needs to be replaced or discarded.

The present invention for achieving the above object consists of a disk-shaped base, a release paper detachably attached to the back surface of the base by a release agent, and unit sand paper which is bonded and overlapped at the same time in an annular manner so that the polishing surface is exposed on the surface of the base. This can be achieved by providing a sandpaper polishing wheel.

It is preferable that the unit sandpaper is formed in a rectangular shape so that a part of the edge is adhered to the base surface.

The base is composed of any one of paper, synthetic resin, and fabric paper. It is preferably composed of paper.

The unit sandpaper is composed of paper sandpaper. That is, it is preferable to use sand paper formed by applying an abrasive to paper.

The object according to the method of the present invention is the step of cutting the base into a disc, the step of attaching a release paper simultaneously with the release agent on the back surface of the base, cutting the sandpaper into the unit sand paper, unit sand paper on the surface of the base At the same time the overlapping is made in the annular phase and the step of bonding.

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

2 is a perspective view showing the configuration of the sandpaper polishing wheel according to the present invention, Figure 3 is a cross-sectional view cut across the center.

Accordingly, the present invention is largely composed of a base 10, a release paper 20, the unit sand paper (30).

The base 10 is configured to be cut into discs and configured to an appropriate size as necessary. Base 10 is made of any one of paper, woven paper, synthetic resin, preferably paper. An adhesive layer is applied to the back surface of the base 10.

The release paper 20 is detachably attached to the back surface of the base 10, that is, the surface to which the adhesive layer is applied, and this is a conventional technology, and thus detailed description thereof will be omitted.

On the other hand, the unit sand paper 30 is to be cut to the required size from a large size sandpaper, preferably cut into a rectangular shape, more preferably cut into a rectangular shape. Each unit sandpaper 30 is bonded to the surface of the base 10 so as to overlap each other. The unit sand paper 30 is disposed in an annular shape to correspond to the outer portion of the surface of the base 10, and is bonded to expose the polishing surface. The adhesive portion of the unit sand paper becomes a portion adjacent to one side of two sides arranged in the radial direction from the center of the base 10. The overlapping area between adjacent unit sandpapers is about 80%. In other words, the area of the adhesive portion is preferably about 20% of the non-overlapping portion.

4A to 4D illustrate the manufacturing process of the sandpaper polishing wheel of the present invention. According to this, a step of cutting the base 10 into a disc is shown in FIG. 4A. The base 10 is cut to an appropriate size from paper stock. In this case, the paper preferably has a predetermined strength.

4B discloses attaching the adhesive layer and the release paper 20 to the back surface of the base 10. The release paper 20 may be configured to be gripped by protruding out of a portion of the base to provide ease in subsequent peeling.

In FIG. 4C, a step of superposing an annular arrangement of unit sandpaper 30 cut into a substantially rectangular shape on the surface of the base is disclosed. Preferably, the unit sand paper 30 is applied in an annular coating on the base 10, and it is preferable to sequentially stack each unit sand paper 30 thereon. According to the present invention, the unit sandpaper 30 is made of paper, so that it is easy to cut into a required shape, and the volume after lamination is not too thick.

The unit sand paper 30 is cut in the same shape from a paper of a relatively large area. According to the present invention, if there is a partial defect in the original paper of the sand paper, only the portion corresponding to the size of the unit sand paper 30 can be removed and used, thereby reducing waste of resources.

When the unit sand paper 30 is overlapped as described above, the sandpaper polishing wheel is completed as shown in FIG. 4D. According to the needs of the present invention, a drying step for curing the adhesive may be further performed. However, if the binder is spontaneously cured, no drying process is required. The polishing wheel of the completed form is clearly shown in plan view in FIG. 5. As shown here, the unit sandpapers 30 are annularly arranged at the edge of the base 10.

In the sandpaper polishing wheel according to the present invention, as shown in FIG. 3, the release paper 20 is peeled off from the base 10 to attach the adhesive to a dedicated tool.

In use, since each unit sand paper 30 has a predetermined step with a neighboring unit sand paper, the grinding force is greatly increased. In addition, since the overall overlapped shape slows down the wear process, it is possible to delay the replacement time of the product.

As described above, the present invention has been described with reference to the embodiments illustrated in the drawings, but this is merely exemplary and will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. will be. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

For example, even if the base according to the present invention is configured in an annular shape rather than a disc shape, it does not have a great advantage in use and action. In other words, when the annular shape is reduced, the adhesion area to the tool may be reduced, but the adhesive force may be somewhat deteriorated. However, the present invention is not limited to the shape of the base because the grinding force and the service life are the same.

The sandpaper polishing wheel and the manufacturing method according to the present invention as described above provides a release paper on the back of the base, and by arranging the unit sand paper on the surface of the annular superposition to improve the computing power, workability by delaying the replacement time of the polishing wheel In addition to being able to greatly improve the has the effect of reducing the waste of resources when the sandpaper failure.

Claims (5)

The base which an adhesive is applied to the back surface, A release paper detachably attached to the back surface of the base by a release agent, Sandpaper polishing wheel, characterized in that consisting of a plurality of unit sand paper is bonded at the same time and overlapped in an annular manner so that the polishing surface is exposed on the surface of the base. The sandpaper polishing wheel according to claim 1, wherein the unit sandpaper has a rectangular shape and a portion of the edges are bonded to the base surface. The sandpaper grinding wheel according to claim 1 or 2, wherein the base is any one of paper, synthetic resin and woven paper. The sandpaper polishing wheel according to claim 1 or 2, wherein the unit sandpaper is paper sandpaper. Cutting the base into discs, Attaching a release paper at the same time as applying a pressure-sensitive adhesive on the back of the base, Cutting the sandpaper into approximately square unit sandpaper, A method of manufacturing a sandpaper polishing wheel, comprising the steps of placing unit sand paper on the surface of a base in an annular manner and bonding them together.

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