Methods of operating an extrusion apparatus
US9126360B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2009 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Aug 5, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2709/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods of operating an extrusion apparatus are provided for extruding ceramic or ceramic-forming material. The extrusion apparatus includes an extrusion die mounted with respect to a barrel. At least one screw is rotatably mounted within the barrel, and a feeder is configured to introduce a batch material to the screw. Example methods can adjust at least one of a rotational rate of the screw to an initial rotational rate or a feed rate of the feeder to an initial feed rate when based on a changed operating condition and/or when the batch material reaches the extrusion die. At least one of the rotational rate of the screw or the feed rate of the feeder can then be increased during a transient state until a steady state is reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.