Slot die position adjustment control
US9579684B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2011 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Mar 12, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D1/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A system comprises a slot die including an applicator slot extending about a width of the slot die, wherein the applicator slot is in fluid communication with a fluid flow path through the slot die, and a plurality of actuators spaced about the width of the slot die, wherein each actuator in the plurality of actuators is operable to adjust a cross-directional thickness of the fluid flow path at its respective location to provide a local adjustment of fluid flow through the applicator slot. The system further comprises a controller configured to set the position of each actuator according to one of a plurality of discrete settings for operation of the slot die. The controller is further configured to, using fluid dynamics and a digital model of the die, predict a set of discrete settings from the plurality of discrete settings corresponding to a preselected cross-web profile for the extrudate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.