| 摘要 |
In a molding process and apparatus for making plastics parts utilizing a radio frequency heating field and means for applying constant pressure, two metallic mold halves (10, 12) are joined clamping therebetween an imprinted diaphragm (18) having the plastics on one side thereof between the diaphragm and one of the mold halves and a liquid conductor, such as mercury (22), or a sodium or graphite solution fills a space on the other side of the diaphragm. Each of the mold halves is provided with means for cooling (30, 36). After the plastics material, which may be in liquid, powder or sheet form, is in place and the mold is closed, the field is applied, and the mercury is pressurised. In another embodiment the material is compressed between one electrode platen and a resilient pad on a second electrode platen. <IMAGE> |
