Surface treatment device and surface treatment method
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United States of America Patent
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Jun 2, 2020
Grant Date -
Oct 18, 2018
app pub date -
Nov 9, 2015
filing date -
Nov 9, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A surface treatment device includes a vacuum blast head, an air curtain-forming unit and an auxiliary air injection unit. The vacuum blast head includes an injection nozzle and a suction hole. The injection nozzle injects a polishing agent used for blast treatment on a surface of a material to be treated. The suction hole sucks up the injected polishing agent with suction air. The air curtain-forming unit injects air toward the surface of the material to be treated to form an air curtain that surrounds the injected polishing agent. The auxiliary air injection unit injects auxiliary air between the air curtain and the suction air toward the material to be treated at a lower pressure than the air that forms the air curtain.
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