WOUND ROLL AS WELL AS CONTROL OF A MACHINE FED FROM SUCH A ROLL
摘要
<p>A roll (12) includes a core (40) to which a metal shim (42) is attached. When material is being unwound from the core the metal shim (42) induces a signal in an inductive device (52) within a roll holder tube (50). The induced signal allows the machine to continue to operate. If the induced signal is not detected operation of the machine ceases.</p>
