Roll-type sandpaper with cutting lines and apparatus for manufacturing cutting lines

Abstract

Disclosed is a roll-type sandpaper, including a base sheet formed of paper or fabric and an abrasive coated to a front surface of the base sheet. Further, the roll-type sandpaper is wound many times, and has a plurality of cutting lines formed in parallel with predetermined intervals and barcodes between the cutting lines on a back surface of the base sheet. Thus, the roll-type sandpaper is advantageous in terms of a small storage volume, and easy cutting by the cutting line even without an additional cutting tool. Moreover, the sandpaper can be purchased in quantities required for abrasion by the barcode, thereby increasing work efficiencies and generating economic benefits. In addition, an apparatus for forming the cutting lines of the sandpaper is provided.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a sandpaper, which comprises a base sheet made of paper or fabric and an abrasive coated to a surface of the base sheet, and a manufacturing apparatus thereof. More specifically, the present invention is directed to a roll-type sandpaper, which is wound many times, having a plurality of cutting lines, each of which is formed in parallel by a predetermined interval and has a plurality of slits; and an apparatus for forming the cutting lines of the sandpaper. [0003] 2. Description of the Related Art [0004] In general, a sandpaper is a type of an abrading means having an abrasive coated to a surface of a base sheet that is made of paper or fabric, and is utilized to abrade recesses and circular portions, as well as bulging portions caused by air bubbles upon coloring woods, lacquer wares, furniture, automobiles, etc., or a molding process, or to remove rust from metals. [0005] The abras...

AI Technical Summary

Benefits of technology

[0008] Therefore, it is an object of the present invention to alleviate the problems encountered in the related art and to provide a roll-type sandpaper having cutting lines, which is advantageous in terms of a small storage volume, easy cutting by the cutting line even without an additional cutting tool, and purchase in quantities required for abrasion by a barcode provided between the cutting lines, thus improving work efficiencies and generating economic benefits.

Problems solved by technology

However, such a sandpaper is disadvantageous in that it is prepared in only the thin quadrangular shape, thus requiring a large storage volume.

Further, the conventional sandpaper is inconvenient to cut by use of an additional cutting tool, such as scissors or a blade, depending on end uses or using ranges thereof.

In such cases, the cutting tool in use may be damaged, due to the rough grit and high hardness of the sandpaper.

Moreover, since the conventional sandpaper is sold by thin quadrangular shapes, it should be purchased in a costly large quantity, thus negating economic benefits.

Furthermore, it is expensive to buy the sandpaper as a fixed price.

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