| 主权项 |
1. An apparatus for providing non-contact application of fluids onto web materials and articles, the apparatus comprising:
a. a gravure roll comprising:
i. a hollow rotating shell having a plurality of cavities disposed within the outer surface thereof;ii. a stationary cylindrical core having a central bore and a channel disposed therein, said central bore being disposed about an axis of said stationary cylindrical core, said channel being in fluid communication with said central bore and in fluid communication with a surface of said stationary cylindrical core, said channel having a single entry point and a single exit point and extending from said central bore to said surface of said stationary cylindrical core, said channel being capable of fluidly communicating a positive pressure from said central bore to said surface of said stationary cylindrical core;iii. wherein said hollow rotating shell is disposed about, and rotatable about, said stationary cylindrical core;iv. wherein each of said plurality of cavities disposed within said outer surface of said hollow rotating shell are rotated about said stationary cylindrical core and said axis so that a portion of each of said cavities are positioned in contacting and fluid engagement with said channel at said surface of said stationary cylindrical core and said positive pressure is fluidly communicateable from said central bore through said channel and into said cavity from said surface of said stationary cylindrical core; and, b. wherein a fluid disposed within a respective cavity of said plurality of cavities disposed within said outer surface of said hollow rotating shell is removed from said respective cavity by said positive pressure when said positive pressure is fluidly communicated from said central bore through said channel and into said cavity from said surface of said stationary cylindrical core. |
