KR100692144B1 - Manufacture method of sand paper - Google Patents

Abstract

A method for manufacturing a polishing material is provided to mount the polishing material without a support plate in a rotational tool by maintaining a strength enough to mount the polishing material in the rotational tool by forming thickness through the coating. In a method for manufacturing a polishing material, the polishing material includes a base material(11), a rosin layer, a cotton net(12), a glass fiber net(13), and a rosin layer. The base material is made of a mixture fiber of cotton of 80 percent and nylon of 20 percent. Rosin layers are formed on both surfaces of the base material. After the rosin layer coated on both the surfaces of the base material is dried, a rosin layer is coated on the dried rosin layer. The cotton net is bonded to the rosin layer. An epoxy layer is formed on the cotton net. The glass fiber net is bonded onto the epoxy. A rosin layer is formed on the glass fiber net. Polishing sands are sprayed to the rosin layer. The polishing material is mounted to a rotational tool to be used.

Description

MANUFACTURE METHOD OF SAND PAPER

1 is a cross-sectional view of the abrasive according to the present invention

Figure 2 is a production operation of the abrasive according to the present invention

3 is a utilization of the abrasive according to the present invention

4 is a conventional abrasive use

*** Description of the symbols for the main parts of the drawings ***

11: base material 12: cotton mesh

13: glass fiber net 14: rosin layer (a, b, c)

15; Epoxy layer 16: abrasive yarn

17: pressing roller (a, b, c) 18: injector (a, b, c, d)

19: abrasive 21: rotary tool

22: support plate 23: guide roller

24: base ash roll 25: rosin

26 chamber 27 face mesh roll

28: glass fiber roll 29: cutter

31: 1st paper 32: 2nd paper

33: liquid rosin 34: liquid epoxy

The present invention relates to a method for manufacturing an abrasive, and more particularly, when mounting abrasives for polishing metals, woods, and the like to a rotary tool and polishing operations, when the grinding efficiency decreases due to abrasive dust, the dust is attached to the rotary tool. It relates to a method for producing an abrasive which can easily remove the filled portion.

Conventional abrasives are made of paper or nylon cloth as a base material, and the abrasive yarn and liquid rosin are mixed and applied to one surface of the base to form an abrasive, and when used in a rotary tool, a support plate made of glass fiber is mounted on the rotary tool and then the abrasive In order to cover the flexibility, the conventional polishing method requires a support plate having the same outer diameter to cover the flexibility, and uses a combination of the abrasive and the support plate to cover the flexibility. Even if silver falls, the hardness is maintained, and when polishing, the polishing efficiency is reduced when the abrasive dust is filled to the polishing surface, so when the abrasive is blown to remove the part filled with dust, the abrasive attached to the base material is detached. The ashes remain and the support plate remains. So polished, so as part saga tally has beongeoreoum need to remove Pando support as part of the base material is removed, and the problems can not be expected to grinding and polishing Saga tally to continue to have the efficiency of polishing the base material portion.

SUMMARY OF THE INVENTION An object of the present invention is to provide an abrasive which can be mounted and used on a rotary tool with only abrasive.

The present invention comprises a base material of cotton fiber but before. The liquid rosin is coated on the back, and the liquid rosin is re-coated to the base material to attach the cotton net, and the base material and the cotton net are integrated by the pressing roller. The epoxy is applied to the cotton net and the epoxy flows down the epoxy. The purpose of this invention is to provide an abrasive which is sprayed with a powdered stone and adhered to a glass fiber net or plastic net using a squeeze roller. .

The rosin in the solid state has the property of being broken by impact and having little elasticity. Epoxy has high adhesive strength and elasticity in the solid state, and breaks into a split state when there is an impact out of elasticity. The stone powder is sprayed to the extent that the liquid epoxy does not flow down, and the high density of the epoxy does not need to spray the powder when the stone powder is not needed. Therefore, stone powder is not a requirement in the present invention.

The surface of the base material and the cotton net is easy to cut the impact, and the glass fiber or plastic has the property of being easily broken to the impact. The base material is composed of 60 mesh cotton fibers, but the thickness is not limited. Cotton mesh consists of 40 mesh but does not limit its thickness. Glass mesh is composed of 20 mesh size but not limited to thickness.

The base material is composed of 60 meshes to induce crushing to a size of 60 meshes. The use of 40 mesh meshes is intended to induce rosin and cotton mesh breakage in 40 mesh increments. The 20 mesh in the glass fiber or plastic mesh is to induce splitting of epoxy and glass fiber or plastic fiber in 20 mesh units.

The present invention comprises a base material 11 composed of cotton, a cotton mesh 12 composed of cotton, a glass fiber mesh 13, a liquid rosin 34, a liquid epoxy, and stone powder.

Figure 1 shows the bonding state of the abrasive according to the present invention, Figure 2 shows a production method of the abrasive according to the present invention, Figure 3 shows the use state of the abrasive according to the present invention, Figure 4 Is a cross-sectional view showing a state of use of a conventional abrasive.

The base material 11 is unwound from the base material roll 24 and guided to the guide roller 23 to pass through the liquid rosin 33 of the rosin box 25 so that the rosin is coated on both sides of the base material 11. As the rosin layer 14a is formed and the rosin is uniformly coated on the base material 11 while passing through the pressing roller 17a, the excess rosin is discharged by pressing, so that the length of the base material 11 is dried. The loss of rosin can be prevented when entering the chamber 26 in which the guide rollers 23 are arranged in parallel.

The temperature of the chamber 26 for drying the rosin of the base material 11 is maintained at 80 ~ 100 ℃, the passing rate is 10 minutes and the drying rate is 70%.

The base material 11 dried while passing through the guide roller 23 in the chamber 26 passes through the injector 18a and is coated with a liquid rosin 33 to form the rosin layer 14b.

The higher the density of the rosin can be applied thicker and easier to dry.

The base material 11 which forms and moves the rosin layer 14 is laminated with the cotton net 12 unwound by the cotton net roll 27.

When the base material 11 and the cotton net 12 are laminated, the coated rosin on the cotton net 12 passes through the pressing roller 17b so as to be exposed to the cotton net 12.

The primary paper 32 which has passed through the pressing roller 17b is dried while passing through the guide roller 23 of the chamber 26.

At this time, the temperature of the chamber 26 is 80 ~ 100 ℃, the passing rate is 20 to 40 minutes and the drying rate is 70%. The liquid epoxy resin 34 is applied to the dried primary paper 32 to form the epoxy resin layer 15.

The higher the density of the epoxy resin can be applied thicker and easier to dry. Stone powder is sprayed so that the epoxy resin of the apply | coated epoxy resin layer 15 does not flow down. The amount of stone powder to be sprayed is not limited. In addition, in some cases, the powder may not be sprayed. Stone meal is not an essential component of the present invention.

The glass fiber net 13 released from the glass fiber net roll 28 is laminated on top of the liquid epoxy resin to form a secondary lamination.

Liquid rosin is applied on the secondary paper 33 to maintain a constant thickness while passing through the rosin layer 14b and the pressing roller 17c. The secondary paper 32 passed through the pressing roller 17c is dried while passing through the drying chamber 26, the temperature of the chamber 26 is 80 ~ 100 ℃ and the passing rate is 40 ~ 60 minutes, the drying rate is 70% to be.

The secondary paper 32 passing through the chamber 26 is coated with a liquid rosin to form a rosin layer 14c and the abrasive sand 16 is sprayed.

The secondary paper 32 sprayed with the abrasive yarn 16 on the rosin layer 14c is dried while passing horizontally through the chamber 26, and the temperature is 80 to 100 ° C., the passing rate is 40 to 60 minutes, and the drying rate. It is dried to 90%, cut to a predetermined size and stored in a horizontal state.

Since rosin and epoxy are thermoplastics, they are not dried in high heat but deformed, so the temperature of the chamber 26 is important.

The apparatus according to the method of the invention is controlled by a control box (not shown).

Example
In general, the abrasive 19 is configured by adhering the abrasive yarn 16 to fibers or paper, and is configured to obtain the effect of polishing by friction against the grinding target.

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When the abrasive 19 is used in the rotary tool 21, the polishing speed is high, and the abrasive dust is sandwiched between the abrasive yarns, thereby reducing the efficiency of polishing. In particular, when the surface of the iron plate is polished in a place such as a machine shop, in order to increase the effect of polishing, the edge of the abrasive 19 may be easily polished using the edge of the abrasive 19, so the center portion of the abrasive is used. There is a problem that the abrasive 19 must be frequently replaced in the non-state state, thereby causing a problem that the abrasive 19 is wasted.

As shown in FIG. 4, the support plate 22 supporting the abrasive 19 may be made of glass fiber in a method that can be used from the conventional abrasive 19 to the center portion of the abrasive 19. By removing the support plate 22 along the outer diameter as necessary, the outer diameter of the support plate 22 is reduced, and the polishing operation can be performed using the central portion of the abrasive 19.

In the above work, since the working area of the first abrasive 19 is moved to the center part, the edge remains intact, and the outer diameter of the removed support plate 22 is not uniformly removed. There is a problem that can be expected to lower the uniform polishing operation.

Example-1

In this embodiment of the present invention, a fiberglass net is used.
The cotton net 12 uses a size of 40 mesh but does not limit the size. As shown in FIG. 1, the fiberglass net 13 uses a 16 mesh size but does not limit the size. The 40 mesh mesh is used to break the rosin into 40 mesh units when the rosin is broken. The 16 meshes in the glass fiber net 13 are to be broken into 16 mesh units when the epoxy resin is broken. Base material 11 is composed of 80% cotton 20% nylon mixed fibers and the thickness is about 80 mesh, but not limited to the thickness.

Cotton is easy to break, and nylon is heat-sensitive.

Rosin uses a liquid phase and the concentration of the liquid rosin 33 is controlled in the control box is set in the control box (not shown) to adjust according to the amount of alcohol added.

As shown in FIG. 1, the base material 11, which is a mixed yarn, is unwound from the base material roll 24, passes through the guide roll 23, and passes through the rosin bin 25 that receives the rosin 33 in a liquid state. Pass through the pressing roller 17a on the box (25).

Both sides of the base material 11 passed through the pressing roller 17a are coated with rosin to form the rosin layer 14a.

The compression roller 17a is located above the rosin box 25 so that the rosin liquid discharged from the compression may fall into the box. The base material 11 which has passed through the pressing roller 17a passes through the drying chamber 26. The chamber 26 has a structure in which hot air is introduced and discharged.

The rosin-coated base material 11 is dried at a drying rate of 70% while passing through the chamber 26 maintained at a temperature of 80 to 100 ° C. for 10 to 20 minutes. The drying rate may be adjusted by adjusting the number of guide rolls 23 in the chamber 26.

In Embodiment-1, the constant value and the operating means are controlled by the control of a control box (not shown). Example: The guide roller 23 of the chamber 26 is upper. If the lower five, the primary paper 31 is upper. The guide rolls are listed five times and the guide roll 23 is upward. If the lower ten, the primary paper 31 is upper. Since it is guided over 10 times, if the number of guide rolls 23 is 10, the speed of passing through the chamber 26 more than twice than the guide rolls 23 is lowered.

Example-2

As shown in FIG. 1, the liquid rosin 33 is sprayed through the injector 18a on the surface of the base material 11 dried in the chamber 26 to the rosin layer 14a on the base material 11. Another rosin layer 14b forms a thickness of about 0.5 mm.
The formation of the rosin layer 14b again on the dried rosin layer 14a is intended to thicken the rosin layer twice over since the rosin layer cannot be thickened once.

The base material 11 on which the rosin layer 14a is formed is laminated with the cotton net 12 to form the primary paper 31, and after passing through the pressing roller 17b, passing through the chamber 26 and drying rate 70 Dry to% and the temperature of the chamber 26 is 80-100 degreeC, and the passage speed of the primary paper 31 is 20-40 minutes. In Example-2, certain values and operations are controlled by the control of a control box (not shown).

Example-3

As shown in FIG. 1, the primary paper 31 dried at a drying rate of 70% in the chamber 26 passes through an injector 18b through which the liquid epoxy 34 is injected, and the epoxy has a predetermined thickness (0.5 mm). Control in a control box (not shown) to be applied to achieve a degree.

After the epoxy is applied, the powder is sprayed, but the liquid epoxy 34 is sprayed to the extent that it does not flow, which is controlled by a control box (not shown).

The dust powder spreading amount is sprayed to such an extent that the liquid epoxy 34 does not flow down, so that a precise amount of grain spraying is not required.

When the liquid epoxy 34 is applied to the primary paper 31, the glass fiber net 13 is released from the glass fiber roll or plastic roll 28, and the secondary paper 32 is laminated with the primary paper 31. Configure.

The secondary paper 32 is pressed to the extent that the liquid epoxy 34 is exposed out of the glass fiber net or the plastic net 13 while passing through the pressing roller 17c. The secondary paper 32 which has passed through the pressing roller 17c passes through the drying chamber 26. The temperature of the drying chamber 26 is 80-100 degreeC, the passage speed is 20-40 minutes, and a drying rate is 70%. In Example-2, certain values and operations are controlled by the control of a control box (not shown).

Example-4

As shown in FIG. 1, the secondary paper 32 dried at a drying rate of 70% in the chamber 26 passes through the injector 18c through which the liquid rosin 33 is injected, and thus the liquid rosin 33 is formed in a predetermined manner. It is applied to a thickness (0.5 mm) and the masseur 16 is sprayed through the injector 18d. The spraying of the masseur 16 is configured to be sprayed differently depending on the thickness of the masseur 16. The secondary paper 32 to which the liquid rosin 33 is sprayed and the masseur 16 is sprayed is dried while passing through the chamber 26 and dried while moving horizontally.

The temperature of the chamber 26 through which the secondary paper 32 passes is 100-120 ° C, the passage time of the chamber 26 is 10-20 minutes, and the drying rate is 90%.

When the abrasive 19 is completed through the above process, rosin layers 14a are formed on both sides of the base material 11, and rosin layers 14b are formed on the rosin layers 14a again. 14b) a cotton net 12 is formed, an epoxy layer 15 is formed on the cotton net, a glass fiber net 13 is formed on the epoxy layer 15, and on the glass fiber net 13 The rosin layer 14c is formed, and the rotatable yarn 16 layer is formed on the rosin layer 14c.

The massage material 19 which has passed through the chamber 26 is processed according to the shape or cut to a predetermined size and stored and managed in a book shape.

The abrasive according to the present invention can be used without a support plate in the rotary tool because the thickness of the coating is continuously formed in each process to maintain the strength enough to work on the rotating tool, rosin at high pressure It has a property of being broken and epoxy has a property of breaking at high pressure, and cotton and glass fiber nets are easily broken at high impact. Therefore, when the abrasive according to the present invention is used by using a rotary tool, Therefore, the wear can be facilitated. That is, when a predetermined impact is applied to the edge of the abrasive, the impacted portion breaks down to the splitting size of the epoxy.

If the part used during the use of the abrasive according to the present invention as described above is broken by a small impact on the edge it can be used continuously to use the unused portion of the abrasive can extend the use time of the abrasive Thereby, waste of abrasive can be prevented.

Claims (3)

The base material 11, which is composed of 80% cotton and 20% nylon mixed fibers, and the rosin layer 14a is formed on both sides, and the rosin layer 14a applied to both sides is dried, and then the dried rosin layer ( 14a), a rosin layer 14b applied over the rosin layer 14b, a surface mesh 12 adhered to the rosin layer 14b, and an epoxy layer 15 formed on the surface mesh 12 and adhered to the epoxy layer 15. The glass fiber net 13, the rosin layer 14c formed on the glass fiber net 13, and the abrasive yarn 16 is sprayed and hardened on the rosin layer 14c so as to be mounted on a rotating tool. Method for producing an abrasive, characterized in that configured. 2. The base material (11) according to claim 1, wherein the base material (11) is unrolled from the roll (24) and passed through the rosin box (25) containing the liquid rosin (33), which is coated with rosin and passes through the pressing roller (17a). The base material 11 which has received the rosin which flows down in the rosin box 25 and passed through the pressing roller 17a passes through the chamber 26 which maintains 80-100 degreeC for 10 to 20 minutes, and has 70% of The rosin is dried at a drying rate, and the rosin is coated on the rosin layer 14a on which the rosin is dried to form a rosin layer 14b by adhering the rosin layer 14b. By forming the paper 31, the primary paper 31 is formed to have a uniform thickness while passing through the pressing roller 17b, and 70% while passing through the chamber 26 at 80 to 100 ° C. at a rate of 20 to 40 minutes. It is dried at a drying rate of, the liquid epoxy 34 is applied while passing through the injector 18b on the dried primary paper 31 and the glass fiber net 13 is adhered on the liquid epoxy 34. The secondary paper 32 is formed to a uniform thickness while passing through the pressing roller (17c) at a passage speed of 20 to 40 minutes in the chamber 26 of 80 ~ 100 ℃ While passing through and dried at a drying rate of 70%, the dried secondary paper 32 is coated with rosin in the injector 18c to form a rosin layer 14c, and is formed by the injector 18d on the rosin layer 14c. A method for producing an abrasive, characterized in that the abrasive sand 16 is sprayed and dried at a drying rate of 90% while horizontally moving at a rate of 10 to 20 minutes in the chamber 26 at 100 to 120 ° C. A base material 11 composed of 80% cotton and 20% nylon mixed fibers and having a rosin layer 14a formed on both sides, and a rosin applied on the rosin layer 14a applied and dried on the base material 11. A layer 14b, a surface mesh 12 adhered to the rosin layer 14b, and a plastic mesh adhered to the epoxy layer 15 formed on the surface mesh 12 and a rosin layer 14c on the plastic mesh. Is formed and the abrasive yarn (16) is sprayed on the rosin layer (14c).

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