Device for reducing the gas flow in the pulling channel around the bulb used in the production of precision tubes comprises a nozzle and a screen in the pulling channel

摘要

Device for reducing the gas flow in the pulling channel around the bulb comprises a nozzle (2) and a screen (5) in the pulling channel. The nozzle is arranged on the end of the pulling channel or within the pulling channel segment and forms a gas curtain through the gas flow. An Independent claim is also included for a process for reducing the gas flow in the pulling channel around the bulb. Preferred Features: The nozzle and the screen are arranged on the end of the pulling channel. The nozzle is formed as a flat nozzle.