| 摘要 |
An extruding apparatus wherein a die-head containing dies for forming two or more layers of thermoplastic material, such as on a core passing through the head, is supplied with material by as many extruder barrels as there are layers. The barrels are connected to the die-head at different points, one of the barrels being fixed to the die-head and the other barrel or barrels being connected to the die-head by a connector which compensates for thermal expansion of the barrels and die-head. This connector has a telescoping component and a universal joint component to compensate for thermal expansion in any direction.
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