Device for detecting defects of web
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 22, 1994
Grant Date -
N/A
app pub date -
Sep 4, 1992
filing date -
Jan 10, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plurality of probes 3 or 10 are arranged in a conveying path of a web 1 or 9 comprising a slit sheet or a nonwoven fabric for contact with the web 1 or 9. The probes 3 or 10 are rotatably supported and arranged so that if a defect portion exists in the web 1 or 9, the probes 3 or 10 rotate to the defect portion of the web and protrude under the web, and when the probes 3 or 10 protrude under the web, a detecting means 6b outputs a defect detection signal.
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