In a wide range of applications, materials are wound or unwound using automated systems. In order to create tight, compact and uniform rolls or to unroll materials such as film or paper at a constant and precision tension, it is essential to have a controller in place that is able to maintain the system at the correct levels.
Choosing the right tension controller for the job will be an important part of setting up a new packaging or production line or in replacing equipment on an existing system. When replacing failed equipment or when upgrading, it will be essential to match the controller to the equipment so that it will integrate and operate effectively.
Quality Vs. Price
With any type of tension controller, including a closed loop or an open loop system, there will be a range of possible prices. Component prices are typically closely aligned with both complexities as well as quality.
The open loop system will require manual control. This includes both for setting the range as well as correcting the system should the tension fall to either side of the pre-selected range. With the closed loop system, the adjustment to the brake to maintain the tension. The system automatically takes data from several aspects of the process, including the speed, roll diameter and the actual tension on the film or paper.
The closed loop system is more advanced than the open, which means it is the more costly of the two. However, the automated adjustment and precision control will be essential in minimizing waste and defects in paper or film if the tension is too loose or too tight.
Quality manufacturers of tension controller models will be competitively priced in the market. Avoid the very cheap types of system as they are typically not designed for long life cycles and may not provide the level of control even on initial installation.
