In industrial operations, especially when designing or constructing sensitive and high-performance items, speed and precision are very important. To achieve the two, most industries are turning to web controls. These are advanced forms of automation used in the conversion industry for positioning webs (flat materials for processing). It is mainly used before the critical stages of the conversion.The web controls use advanced sensors
for lateral monitoring. The system also use actuators that help put the webs back on course, if they are noted to have drifted away from the course. Most actuators are either hydraulic or pneumatic cylinders.In most operations, the web control systems operate at high speed and small adjustments are made regularly. As an automation system, the process is controlled remotely and followed on industrial computers or LCD monitors. Some of the common systems that use web control methods include laminating machines, printing presses, slitter rewinders, and slitting machines.