| 摘要 |
<p>A semi-solid mixture of noncomestible material is brought into contact with a virbrating surface of a mold (113) including two vibrating tools (108, 110) each having a cavity (111) therein, whereby energy is transported across the surface into the mixture to form a molded cylindrical shape (112). The mixture is injected into the mold (113) from the side through a port defined by surfaces (115) after the two vibrating tools (108, 110) are brought together. The vibration is generally in the ultrasonic frequency range, and the energy injection is sufficient to cause local physical and chemical changes in mixtures susceptible to such changes, and generally to cause changes in the direction of increased tensile strength and resistance to flow. In general, a skin is formed on the mixture, and with greater processing efficiency then if such skin were formed by purely thermal means.</p> |
