abstract |
Apparatus is provided for cooling and sizing thermoplastic extrudates comprising a continuous hollow porous sleeve of eventual shape of the extrudate, said sleeve having a series of adjacent transverse sections, alternating sections thereof being connected to a first liquid coolant system with sufficient pressure to force cooling liquid inwardly and the remaining alternating sections being connected to a second liquid coolant system under sufficient reduced pressure to draw a portion of the cooling liquid outwardly. |