Method for improving the stiffness of extrudates

Details Method for improving the stiffness of extrudates Method for improving the stiffness of extrudates

1997-06-04

1999-03-16

Jenkins, Daniel J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making porous product

419 41, 419 67, 264 129, 264433, 264464, B22F 320, B29C 4700

Patent

active

058841385

ABSTRACT:
An improvement in a method of extruding a plasticized inorganic powder mixture having a plasticizing organic binder carried in an aqueous vehicle, by passing the mixture through an extruder and then through a die to produce an extrudate. The improvement involves homogeneously blending in the extruder as part of the mixture, carbon dioxide in the supercritical and/or liquid form, to lower the viscosity of the mixture and produce an extrudate that is stiffer in a shorter time than it would be, absent the carbon dioxide, without increasing the extrusion pressure.

REFERENCES:
patent: 3885977 (1975-05-01), Lachman et al.
patent: 4740352 (1988-04-01), Takahashi
patent: 4758272 (1988-07-01), Pierotti
patent: 4769212 (1988-09-01), Nakamura et al.
patent: 4913737 (1990-04-01), Nakamura et al.
patent: 4965039 (1990-10-01), Schuetz
patent: 4992233 (1991-02-01), Swaroop et al.
patent: 5120559 (1992-06-01), Rizvi et al.
patent: 5427601 (1995-06-01), Harada et al.
patent: 5678165 (1997-10-01), Wu
Temperature -Enropy Diagram, Form 6244 .COPYRGT. 1974 Liquid Carbonic.

Affiliated with

Also associated with

Rating

Method for improving the stiffness of extrudates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for improving the stiffness of extrudates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for improving the stiffness of extrudates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-826321