| 摘要 |
PCT No. PCT/JP90/01582 Sec. 371 Date Jul. 9, 1991 Sec. 102(e) Date Jul. 9, 1991 PCT Filed Dec. 5, 1990 PCT Pub. No. WO91/08888 PCT Pub. Date Jun. 27, 1991.A compression molding apparatus equipped with a rotary support member on which are mounted a plurality of molds. The molds are successively conveyed passing through a plastic material feed zone, a compression molding zone and a discharge zone by the rotation of said rotary support member. A plastic material feed device is disposed in said plastic material feed zone to feed a softened and molten plastic material to each of the molds. The plastic material feed device includes an extruder, an extruding block in which a plastic material flow path is formed, and a plastic material flow control device disposed between the extruder and the extruding block. The plastic material flow control device includes a main body that has an inlet path communicating with the extruder, a feed path communicating with the extruding block, and a discard path. The main body includes a control valve which is selectively located at a feed position at which the inlet path is shut off from the discard path and is communicated with the feed path, and at a discard position at which the inlet path is shut off from the feed path and is communicated with the discard path. |
