Locate problematic machine elements using Tapio MD Analysis

Diagram showing a web passing through rolls with quality variations and geometry errors, illustrating how machine direction frequency stays at 1 Hz even as velocity and wavelength change.

Locate problematic machine elements using Tapio MD Analysis In paper, board, and other continuous production processes where the product is formed by rolling or pressing, every rotation of any mechanical element affecting the web — such as a roll, felt, wire, or pump — leaves a repeating pattern related to quality variation on the final […]

Hidden defects in rolls: a closer look with Tapio RQP Live

A person in a high-visibility vest measuring the hardness of a large paper roll using the Tapio RQP Live handheld device.

Hidden defects in rolls: a closer look with Tapio RQP Live A paper, board or plastic roll may appear perfectly fine on the outside. The surface layers may seem to be uniform, smooth, and free of any obvious defects. However, beneath the outer layers, hidden issues can exist that compromise the performance and quality of […]

Hidden roll defects are costing you more than you think

A visual comparison showing a plastic roll that appears uniform, a wrinkled sheet when unrolled, and a hardness profile graph revealing defects along the CD position.

Every mill knows the frustration of a “bad” roll — unscheduled downtime, customer complaints, wasted materials, and production delays. But what if you could detect roll defects before they cause expensive problems? The good news: you can. And it starts with understanding roll hardness profiles.