| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for detecting magnetic foreign matter in viscous liquids and capable of highly and sensitively detecting magnetic foreign matter in viscous liquids in a manufacturing line of products in which the viscous liquids are contained in nonmagnetic containers. SOLUTION: In the method for electromagnetically detecting magnetic foreign matter in viscous liquids while products (b) in which the viscous liquids are contained in the nonmagnetic containers are being transferred, a magnetic sensor (s) is arranged at a mid point in a transfer path in such a way as to face an external surface of the bottom of a container. A forceful moving means (c) for forcefully moving foreign matter to the side of the bottom surfaces of the container is provided for the upstream side of the magnetic sensor (s). With the magnetic foreign matter forcefully moved to the side of the bottom surface of the container, the magnetic foreign matter is detected by the magnetic sensor (s). COPYRIGHT: (C)2008,JPO&INPIT
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