Abstract: A method is disclosed for reducing feed rate variations when unwinding a web material to transport the web material away from the parent roll at a web takeoff point where the feed rate variations are induced by parent roll geometry variations. The method utilizes calculated and measured data and selected adjustment percentages to make suitable improvements in the driving speed for an out-of-round parent roll to get closer to a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: A method is disclosed for reducing feed rate variations when unwinding a web material to transport the web material away from the parent roll at a web takeoff point where the feed rate variations are induced by parent roll geometry variations. The method utilizes calculated and/or measured data to make suitable adjustments in the driving speed for an out-of-round parent roll to get closer to a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: A method is disclosed for reducing feed rate variations when unwinding a web material to transport the web material away from the parent roll at a web takeoff point where the feed rate variations are induced by parent roll geometry variations. The method utilizes calculated and measured data and selected adjustment percentages to make suitable improvements in the driving speed for an out-of-round parent roll to get closer to a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: A method is disclosed for reducing feed rate variations when unwinding a web material to transport the web material away from the parent roll at a web takeoff point where the feed rate variations are induced by parent roll geometry variations. The method utilizes calculated and/or measured data to make suitable adjustments in the driving speed for an out-of-round parent roll to get closer to a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: A method is disclosed for reducing feed rate variations when unwinding a web material to transport the web material away from the parent roll at a web takeoff point where the feed rate variations are induced by parent roll geometry variations. The method utilizes both calculated and measured data to make suitable adjustments in the driving speed for an out-of-round parent roll to maintain a relative constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: A method is disclosed for reducing feed rate variations when unwinding a web material to transport the web material away from the parent roll at a web takeoff point where the feed rate variations are induced by parent roll geometry variations. The method utilizes both calculated and measured data to make suitable adjustments in the driving speed for an out-of-round parent roll to maintain a relative constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: An apparatus is disclosed for reducing feed rate variations when unwinding a web material. The apparatus includes a rotational position and speed determining device for determining the rotational position and speed of the parent roll, a drive system for imparting rotational movement to the parent roll, a device for measuring the radius of the parent roll, and a logic device. The logic device generates an ideal speed reference signal and utilizes calculated and measured data to establish a corrected speed reference signal to make adjustments in the driving speed based upon the corrected speed reference signal to maintain a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: An apparatus is disclosed for reducing feed rate variations when unwinding a web material. The apparatus includes a rotational position and speed determining device for determining the rotational position and speed of the parent roll, a drive system for imparting rotational movement to the parent roll, a device for measuring the radius of the parent roll, and a logic device. The logic device generates an ideal speed reference signal and utilizes calculated and measured data to establish a corrected speed reference signal to make adjustments in the driving speed based upon the corrected speed reference signal to maintain a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: An apparatus is disclosed for reducing feed rate variations when unwinding a web material. The apparatus includes a rotational position and speed determining device for determining the rotational position and speed of the parent roll, a drive system for imparting rotational movement to the parent roll, a device for measuring the radius of the parent roll, and a logic device. The logic device generates an ideal speed reference signal and utilizes calculated and measured data to establish a corrected speed reference signal to make adjustments in the driving speed based upon the corrected speed reference signal to maintain a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: An apparatus is disclosed for reducing feed rate variations when unwinding a web material. The apparatus includes a rotational position and speed determining device for determining the rotational position and speed of the parent roll, a drive system for imparting rotational movement to the parent roll, a device for measuring the radius of the parent roll, and a logic device. The logic device generates an ideal speed reference signal and utilizes calculated and measured data to establish a corrected speed reference signal to make adjustments in the driving speed based upon the corrected speed reference signal to maintain a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: An apparatus is disclosed for reducing feed rate variations when unwinding a web material. The apparatus includes a rotational position and speed determining device for determining the rotational position and speed of the parent roll, a drive system for imparting rotational movement to the parent roll, a device for measuring the radius of the parent roll, and a logic device. The logic device generates an ideal speed reference signal and utilizes calculated and measured data to establish a corrected speed reference signal to make adjustments in the driving speed based upon the corrected speed reference signal to maintain a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: An apparatus is disclosed for reducing feed rate variations when unwinding a web material. The apparatus includes a rotational position and speed determining device for determining the rotational position and speed of the parent roll, a drive system for imparting rotational movement to the parent roll, a device for measuring the radius of the parent roll, and a logic device. The logic device generates an ideal speed reference signal and utilizes calculated and measured data to establish a corrected speed reference signal to make adjustments in the driving speed based upon the corrected speed reference signal to maintain a relatively constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: A method is disclosed for reducing feed rate variations when unwinding a web material to transport the web material away from the parent roll at a web takeoff point where the feed rate variations are induced by parent roll geometry variations. The method utilizes both calculated and measured data to make suitable adjustments in the driving speed for an out-of-round parent roll to maintain a relative constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.

Abstract: A method is disclosed for reducing feed rate variations when unwinding a web material to transport the web material away from the parent roll at a web takeoff point where the feed rate variations are induced by parent roll geometry variations. The method utilizes both calculated and measured data to make suitable adjustments in the driving speed for an out-of-round parent roll to maintain a relative constant feed rate. By dividing the parent roll into 1, 2, . . . n sectors, the data can be refined to a relatively high degree taking into account high speed data processing capabilities as well as operating system response times to make appropriate driving speed adjustments.