The core area is the foundation upon which we will build the rest of the wound roll. The core area is also most important for core supported storage as well as unwinding at your customer. This area must withstand higher pressures and torques without fail. Fail might be to have too much or too little interlayer pressure. Fail might be to allow or even to cause layers to shear that could cause a Type 1 telescope or other problem. This places more demand on the TNT control systems in the first few seconds than at any other time during the winding.