DEVICE FOR MANUFACTURING A DOUBLE-WALLED THERMOPLASTIC PIPE WITH A CONNECTING SLEEVE

摘要

The invention relates to a device for manufacturing a doubledouble-walled thermoplastic pipe with a connecting sleeve. When thepipe is manufactured by using this device, there forms anapproximately annular space (A), which is defined by an extrusionhead (1), a first flexible tube (2), which is extruded into amolding tunnel (4), and a second flexible tube (5), which isextruded into the first flexible tube (2). The inventionenvisages connecting the space (A) to a compressed-gas reservoir(24), so that pressure changes in the space (A) are attenuatedby the compressed-gas vessel (Fig. 1).