Unwind/Rewind Guide

End and Center Pivot Guides - Not a commonly used web guide in the industry

End and center pivot guides do not displace the web, they only have the angle of rotation to reposition the web. This makes them very slow in term of response, and therefore, are not an ideal choice in web guiding options.

Unwind and rewind web guide systems are used at the start and end of the converting lines. That is why they are referred to as terminal web guides. So, what is required to properly incorporate a terminal web guide in your converting line based on web guiding fundamentals?

Rewind Web Guide Structure

In a previous blog we discussed the unwind web guide structure. Typically, these are made up of a shifting stand, an actuator to move the shifting stand, a fixed sensor mounted on the fixed base of the machine between the last shifting idler roll and a fixed roll, a controller, and of course, the web. Today we look at the rewind web guide structure.

Within the group of terminal web guide systems, there are two basic types: Unwind web guide systems and rewind web guides systems.

Both systems have basically the same components, but they work differently. Let’s look at the unwind web guide structure.