Abrasive and method for manufacturing the same
AssigneesTokyo Shibaura Denki Kabushiki Kaisha, Mitsui Toatsu Chemicals, Inc.
InventorsTakashi Miyatani, Junji Nakata, Kisuke Seki, Takafumi Kageyama
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Abstract
An abrasive for removing flashes of a molded product, which comprises synthetic resin particles, each particle having a plurality of cutting edges and of cracks capable of easily forming cleavages upon collision against a workpiece. A method for manufacturing such synthetic resin abrasive particles which comprises a step of intentionally forming a number of cracks in the resin particles.
Claims30
An abrasive comprising synthetic resin particles, each said resin particle having (a) a plurality of cutting edges and (b) a plurality of cracks capable of easily forming cleavages upon collision against a workpiece.
A method for manufacturing a synthetic resin abrasive by steps of molding a synthetic resin mass and grinding the molded synthetic resin mass, and wherein at least one of said steps of molding and grinding is practiced by the step of forming cracks which can easily form cleavages upon collision against a workpiece.
A synthetic resin particle for abrading a workpiece, said particle including plural cutting edges and plural cracks, wherein said cracks form cleavages in said particle upon collision of said particle with a workpiece.
A synthetic resin particle for abrading a workpiece, said particle comprising (a) cutting edge means defining plural cutting edges, and (b) means defining plural cracks, said crack-defining means for forming cleavages in said particle in response to collision of said particle against the workpiece.
A method for manufacturing a synthetic resin abrasive comprising the steps of:
- (a) forming a discrete plurality of resin particles, each particle having a plurality of cutting edges;
- and
- (b) forming a plurality of cracks in each said particle such that said cracks are capable of forming cleavages upon collision of said particles with a workpiece.
Dependencies are inferred from the claim text.