Pressure-assisted formation of shaped articles
AssigneeSural Tech
InventorsNavtej S. Saluja, Alfredo Riviere V.
Life of this patent
Estimating the term…
Abstract
An apparatus and method for the forming of a shaped article includes a means for plasticizing a feed material; a die chamber; a means for delivering a plasticized feed material from the plasticizing means and into the die chamber, the delivery means in flow communication with the plasticizing means and the die chamber; and means for applying a pressure to a material in the die chamber. In operation, a feed material is introduced into a plasticizing source; the plasticized feed material is delivered to a die chamber connectable in flow communication with the plasticizing source; and supplemental pressure is applied to the plasticized feed material within the die chamber.
Claims20
An apparatus for the forming of a shaped article, comprising
- means for plasticizing a feed material;
- a die chamber;
- means for delivering a plasticized feed material from the plasticizing means and into the die chamber, the delivery means in flow communication with the plasticizing means and the die chamber;
- and
- means for applying a pressure to a material in the die chamber, the means for applying pressure comprising a member capable of movement from a first position spaced apart from the die chamber to a second position in abutment with a material in the die chamber.
A method for production of shaped articles, comprising:
- introducing a feed material into a frictions/extrusion source;
- receiving extruded feed material from the extrusion source in a metering chamber, the metering chamber in flow communication with the frictional extrusion source;
- applying an additional pressure to the extruded materials within the metering chamber;
- directing extruded feed material from the metering chamber under pressure into a die chamber contactable in flow communication with an outlet conduit of the metering chamber
- monitoring extrusion of extruded feed material from the metering chamber;
- and
- selectively controlling sealing means disposed in the outlet conduit, the sealing means responsive to monitoring flow of extruded material therethrough.
Dependencies are inferred from the claim text.