| 摘要 |
A sleeve (11;11a,11b) surrounds and guides the profile (17) in the water bath (5) and a gap between the profile and the sleeve on both sides is connected to the water bath. The sleeve set away from the end walls (6,6a;7) of the bath, is 100-400mm, preferably 250-320mm long and 5-10mm thick. An Independent claim is made for a system for cooling and calibrating extruded plastic profiles incorporating a dry calibrating unit (2), the claimed cooling and calibrating apparatus (3) and one or more baths containing calibrating diaphragms. Preferred Features: A guide is located where inner ribs connect with the outer part of the profile. The sleeve or sleeves are located in the upstream end of the bath (5) and is held in position by several diaphragms (12,13) forming chambers with interconnecting openings for coolant. The sleeve and/or diaphragms have limited movement transverse to the profile movement. |
