Vacuum osmosis and solidification forming machine

Details Vacuum osmosis and solidification forming machine Vacuum osmosis and solidification forming machine

1999-09-02

2001-05-22

Pyon, Harold (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to feed measured charge of fluent...

C452S086000, C452S086000

Reexamination Certificate

active

06234780

ABSTRACT:

BACKGROUND OF THE INVENTION
1. As ball clay, pottery clay, or china clay, etc cannot coagulate itself to form articles as hard as those made through firing, hence, sintering process of the green-cast article and some related machinery, such as screw mixer, kneading mill, and forming machine, etc, have been used for quite a long time. However, at the time the concept of environment protection is greatly enhanced, the sintering process is supposed to lead itself approaching a dead end owing to its released toxic gases.
2. A sintering free hydration process may take its place to cake and harden cement, lime, and the like, which will commence coagulation within 40 minutes after meeting moisture (without sintering), and become harder and harder with time. And, it is understood that coagulating and hardening principle is quite different between sintering and hydrating, the implements used in the former is no longer applicable to the latter.
If the machines applied in point 1 are employed for producing the materials in point 2, it is possible that some remainder will stay at corners in blind angle after a working cycle to interfere the new coming material. And, from time to time, the remainder becomes bigger and bigger, harder and harder by accumulation to finally clog operation of the implements.
In view of the above, this invention discards the conventional process that mixes dry and wet materials together, also the auger extrusion forming machine and blade mixing method. Instead, this invention separates the dry and the wet material for uniformly pre-mixing respectively to change the fabrication process and implementation thoroughly in order to realize a smooth mass production with higher quality for materials that can become coagulated and hardened by moisture.
SUMMARY OF THE INVENTION
This invention relates a vacuum osmosis and solidification forming machine, particularly to a forming machine that evacuates air from a forming chamber with a vacuum pump to enable the pre-dosed uniform dry powder of a solidifying or a pending solidification material put in the forming chamber thereafter to avail itself of the principle of liquid extraction by vacuum osmosis to contact entirely with a dosed liquid stabilizer sprayed into the chamber, and to be compressed to a minimum volume for achieving solidifying condition of saturated moisture.


REFERENCES:
patent: 2404559 (1946-07-01), Asbaugh
patent: 4153404 (1979-05-01), Ottman
patent: 4534721 (1985-08-01), Iwasaki et al.
patent: 5176777 (1993-01-01), Guilhem

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