Injection head for injecting molten plastic into mold, contains core with central melt channel of beryllium or beryllium alloy, protective cap made from corrosion-resistant material being mounted between rear end of core and casing

摘要

an injection head contains a core (15) with a central melt channel (K) of beryllium or a beryllium alloy. A heater (17) is mounted around this and a nozzle (20) is mounted at the front end of the melt channel. A protective cap (29) made from corrosion-resistant material is mounted between the rear end of the core and the casing of the injection head.