Master/slave guiding is a technique used to align two layers of web material, one on top of the other. This process involves measuring the position of the unguided master web, which serves as the base substrate. The position measurement is then relayed to a slave web guiding system. The slave web guide utilizes this information, known as the guidepoint offset, to accurately guide the web material. As the master web moves, the guide point of the slave web is adjusted accordingly, ensuring that the web is guided to a new location that maintains proper lamination between the two webs.
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