Plastic and nonmetallic article shaping or treating: processes – Vacuum treatment of work – To degas or prevent gas entrapment
Patent
1994-06-07
1996-08-27
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Vacuum treatment of work
To degas or prevent gas entrapment
264148, 264150, 264152, 26417711, 264211, 26421111, 264241, 264333, B28B 100, B28B 2152, B29C 4700, B29C 6500
Patent
active
055498590
ABSTRACT:
Hydraulically settable mixtures and methods for extruding such mixtures into a variety of objects which are form-stable in the green state. High green strength is achieved by increasing the yield stress of the mixture while maintaining adequate extrudability. Optimizing the particle packing density while including a deficiency of water yields a hydraulically settable mixture which will flow under pressures typically associated with the extrusion of clay or plastic. In addition, a rheology-modifying agent can be added to increase the yield stress of the mixture while not significantly increasing the viscosity. The desired strength properties and other performance criteria of the final hardened extruded product are controlled by adding aggregates, fibers, a hydraulically settable binder, water, and other admixtures.
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Knudsen, Mode
Andersen Per J.
Hodson Simon K.
Aftergut Karen
E. Khashoggi Industries
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