JP2007144585A - Abrasive material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an abrasive material able to be folded up flatly with low bulk to ensure convenience for accommodation and carrying around and capable of performing the operation while one grasps sensuously the situation of polishing with the sense of finger tip. <P>SOLUTION: A cylindrical core 2 is formed into a cylindrical shape, square etc., from a thick paper or corrugated cardboard, and an abrasive material layer 3 using a sand paper 3a is provided on the periphery of the core 2 so as to produce the abrasive material 1, which is arranged able to be folded up in a flat condition. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an abrasive that is formed by providing a sandpaper abrasive layer on the outer periphery of a cylindrical core material made of paper, and is used for polishing and grinding the surfaces of various members.

  Conventionally, sandpaper is generally used to grind and grind the surface of members made of various materials. The sandpaper is directly held by hand and the surface to be polished is rubbed or the sandpaper is made of an appropriate core. The surface to be polished is rubbed in a state of being wound around the material.

  By the way, when holding the sandpaper directly by hand and rubbing the surface to be polished, it is difficult to evenly use the entire abrasive surface of the sandpaper, and it is discarded in the state where the abrasive material is left over. Real and uneconomical.

  In addition, the method of wrapping around the core material has the inconvenience that the core material must be prepared separately, and the sandpaper and the core material are easy to move with each other and holding them at the same time reduces workability. I will let you.

In order to eliminate such inconvenience in using sandpaper, a cylindrical polishing roll has been proposed in which a sandpaper abrasive layer is provided on the outer peripheral surface of a hard core and attached to the rotary shaft of a rotary tool. (For example, refer to Patent Document 1).
Utility Model Registration No. 3082411

  The cylindrical polishing roll as described above has the entire outer diameter surface as an abrasive surface, and can be used by attaching the entire abrasive surface evenly because it is attached to a rotary tool. Holding this by hand and using it for manual work has the advantage that it is easy to use because the holding during polishing is stable, but the core is hard, so the cylindrical shape does not change and it is bulky There is a problem that it is inconvenient to store and carry.

  Also, in sandpaper polishing work, the ratio of manual work in which the worker holds the sandpaper by hand and polishes it is much higher than the polishing performed mechanically by rotating the polishing roll. The roll lacks versatility.For example, an operator who performs grinding for occupational work performs the work while grasping the grinding situation sensuously with the sense of the fingertip during the grinding work. There is also a problem that it cannot respond to.

  Therefore, the problem of the present invention is that it can be folded flat, is low in volume and is convenient for storage and carrying, and can be operated while grasping the polishing situation sensuously with the sense of a fingertip. It is to provide an abrasive.

  In order to solve the above-described problems, the present invention provides an abrasive in which an abrasive layer is provided on the outer periphery of a cylindrical core material, wherein the cylindrical core material is formed into a paper square tube shape, The configuration is such that the core material can be folded into a flat state.

  The cylindrical core material is formed into a rectangular tube shape having a size capable of inserting a person's finger inside using cardboard or cardboard, and the cylindrical core material uses the bent portions of the four corners, It can be folded into a two-layer flat state, and a structure in which an abrasive layer provided on the outer periphery of the cylindrical core material is formed of sandpaper can be obtained.

  Here, the cylindrical core material is formed by bending a piece of cardboard or corrugated paper into a rectangular tube shape and bonding both ends, and by attaching sandpaper to the outer surface of this cylindrical core material, an abrasive material A layer is formed.

  The size of the cross-sectional shape of the cylindrical core material is not particularly limited, but for example, it is suitable for polishing work to form a rectangular cross-sectional size that allows insertion of three fingers side by side.

  According to the present invention, the cylindrical core material provided with the abrasive material layer on the outer periphery is formed into a paper square tube shape, and the cylindrical core material can be folded into a flat state. Folding into a flat state reduces the bulk and does not bulk, so it is particularly convenient when storing or carrying a plurality.

  In addition, the cylindrical core material is large enough to allow fingers to be inserted side-by-side, so the fingers can be inserted into the cylindrical core material for polishing work, and the polishing work is more stable than holding with a finger. And it is possible to apply force to the polishing surface efficiently and to be able to grasp the situation of polishing sensibly with the sense of fingertips through the paper thickness of the cylindrical core material, and to perform accurate polishing become.

  In addition, since the cylindrical core material is in the shape of a square tube, the entire sandpaper used as the abrasive layer can be used for polishing, and there is no waste and a wide flat abrasive surface can be secured. The efficiency of polishing work can be improved.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in the figure, the abrasive 1 has a structure in which an abrasive layer 3 is provided on the outer periphery of a cylindrical core material 2, and the cylindrical core material 2 is formed in a paper square tube shape. The core material 2 can be folded into a flat state.

  The cylindrical core material 2 uses a cardboard 2a as shown in FIG. 1 (c) or a cardboard 2b as shown in FIG. 1 (d), and a sheet of cardboard 2a or cardboard 2b is bent into a rectangular tube and stacked. The abrasive layer 3 is formed by adhering the sandpaper 3a to the outer surface of the cylindrical core member 2 with an adhesive.

  The length and size of the cylindrical core material 2 are not particularly limited, but for example, it is suitable for polishing work to form a rectangular cross-sectional shape that is large enough to insert three fingers side by side. ing.

  The cylindrical core member 2 can be folded into a flat state of two layers as shown in FIG. 1B by using the bent portions at the four corners.

  The abrasive 1 of the present invention is configured as described above, and when used, the cylindrical core material 2 is formed into a rectangular tube shape as shown in FIG. 2, and a fingertip is inserted into the cylindrical core material 2 for polishing. The material 1 may be held and the abrasive layer 3 may be pressed against the surface to be polished to be polished, and since it has a rectangular tube shape, it can be stably attached to the hand and can be easily polished, and the wide flat abrasive layer 3 In addition, since the abrasive 1 is in the shape of a square tube, the entire four surfaces of the abrasive layer 3 can be used effectively, and there is no waste of the sandpaper 3a.

  Further, when the abrasive 1 is a rectangular tube, the polishing operation can be stably and efficiently applied to the polishing surface, and the polishing can be performed with the fingertip sense through the paper thickness of the cylindrical core 2. The situation can be grasped sensuously and accurate polishing can be performed.

  Furthermore, since the polishing material 1 can be folded into a flat state, folding the polishing material 1 into a flat state of two stacked sheets reduces the bulk, and even if a plurality of layers are stacked, it is not bulky. This is convenient when you want to carry or carry.

(A) is a perspective view of a state used for polishing work of an abrasive, (b) is a perspective view showing a state in which the abrasive is folded flat, and (c) is an abrasive using cardboard as a cylindrical core material. (D) is an enlarged sectional view of an abrasive using corrugated paper as a cylindrical core material. The perspective view which shows the state which is grind | polishing using an abrasive

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Abrasive material 2 Cylindrical core material 2a Thick paper 2b Corrugated paper 3 Abrasive material layer 3a Sand paper

Claims (2)

  In the abrasive having an abrasive layer provided on the outer periphery of the cylindrical core material, the cylindrical core material is formed in a paper square tube shape, and the cylindrical core material can be folded into a flat state. Abrasive material characterized by   The cylindrical core material is formed into a rectangular tube shape having a size capable of inserting a person's finger inside using cardboard or cardboard, and the cylindrical core material uses the bent portions of the four corners, 2. The abrasive according to claim 1, wherein the abrasive can be folded into a two-ply flat state, and the abrasive layer provided on the outer periphery of the cylindrical core member is formed of sandpaper.

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