| 摘要 |
PURPOSE:To obtain a stable heat shrinkage without influence of environmental temp. by providing a forced const. temp. air cooling apparatus continued from an extruder and blowing a const. temp. air to a shaped wire passing through the const. temp. box and keeping the temp. of the const. temp. box at the same temp. as that of the const. temp. air when the shaped wire is produced by coating a wire with a molten resin. CONSTITUTION:A wire 10 like a steel wire material such as a single wire and a twisted wire is let pass through a shaped die 9 through a crosshead 4 and is coated with a molten resin. Immediately after that, it is cooled in a forced-const. temp. air cooling apparatus 5 with a const. temp. box and after heat shrinkage is stabilized, it is cooled with water and taken off by a winder 8. The const. temp. box has an air blowing hole and e.g. a compressed air made in a compressed air manufacturing apparatus is cooled by means or a refrigerator and heated to a const. temp. and is sent to the air blowing hole and the shaped wire 11 is cooled by blowing the air. On the other hand, after the air from a blower is cooled in an air cooler wherein water cooled by means of a refrigerator is circulated, it is heated to a const. temp. and is sent to the const. temp. box to keep the inner temp. at the same temp. as that of the air blown to the shaped wire 11. |
