Method for controlling drying of a web-formed material
Patent 6938359 Issued on September 6, 2005. Estimated Expiration Date: 
January 16, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 16, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3161482 Method and apparatus for drying wet particulate material to a predetermined uniform moisture content Arrangement in material drying systems Method and apparatus for drying coated webs Patent #: 5136790 InventorsAssigneeApplicationNo. 10467074 filed on 01/16/2002US Classes:34/445, With drying parameter control34/446, Temperature or moisture control of material treated or treating gas or vapor34/487, Gas or vapor flow directing or control34/491, Temperature or moisture content of treated material or chamber controls or directs gas or vapor34/492, Gas or vapor flow varied during treatment34/570, With flow control valve34/524With automatic controlExaminersPrimary: Lu, JipingAttorney, Agent or FirmForeign Patent References
International ClassF26B003/00AbstractA web-formed material (1), preferably a pulp web (1), is passed through a drying plant, comprising blow boxes arranged in a plurality of drying decks, floating above lower blow boxes, which at their upper sides blow out hot process air against the web-formed material (1). Water, in the form of steam, escaping from the web-formed material (1) is discharged by the process air, at least part of which is recirculated (43) whereas the non-recirculated process air is discharged as exhaust air (41) and is replaced by a corresponding portion of supply air (42) with a low water content. The temperature of the process air is controlled (4). If a deviation from the desired dry content of the dried web-formed material (1) is detected (6), the volume flow of the process air (40) is changed by increasing the volume flow of the process air (40) at too low a dry content in the web-formed material (1), and by decreasing the volume flow of the process air (40) at too high a dry content in the web-formed material, for the purpose of rapidly regaining the desired dry content of the dried web-formed material (1).Field of SearchWith drying parameter controlTemperature or moisture control of material treated or treating gas or vapor Gas or vapor flow directing or control Temperature or moisture content of treated material or chamber controls or directs gas or vapor Gas or vapor flow varied during treatment Temperature of treating gas or vapor controlled To prevent damage to material or system Temperature of gas or vapor regulated by other drying variables Multiple temperature levels of gas or vapor With automatic control Using specific moisture sensor structure With heater And blower | |
