초록 ▼

The plastic flexible grinding stone according to the present invention comprises a plastic flexible material having mixed therewith a powder synthetic detergent and an abrasive such as silica sand and calcium carbonate composed of grains from 3 to 50 .mu.m in diameter, and is capable of removing sim

The plastic flexible grinding stone according to the present invention comprises a plastic flexible material having mixed therewith a powder synthetic detergent and an abrasive such as silica sand and calcium carbonate composed of grains from 3 to 50 .mu.m in diameter, and is capable of removing simultaneously minute protrusions and stain from coated surfaces such as of rolling stocks.

대표청구항 ▼

[ What is claimed is:] [43.] A method of polishing a protrusion or stain from a coated surface, comprising:applying a plastic flexible tool to the coated surface, the plastic flexible tool comprising a plastic flexible material having mixed therewith an abrasive comprising grains from about 3 to 50

[ What is claimed is:] [43.] A method of polishing a protrusion or stain from a coated surface, comprising:applying a plastic flexible tool to the coated surface, the plastic flexible tool comprising a plastic flexible material having mixed therewith an abrasive comprising grains from about 3 to 50 .mu.m in diameter;pressing the plastic flexible tool against the coated surface to form a substantially planer surface on the plastic flexible tool; andreciprocating the substantially planar surface of the plastic flexible tool with polishing force on the coated surface for less than about 30 seconds, thereby applying a polishing force per area to the coated surface and to the protrusion or stain on the coated surface, the polishing force per area applied to the coated surface being less than the polishing force per area applied to the protrusion or stain.