Drop-in Hot Runner System Features Easy Nozzle Connections

Available in both hot-tip or valve-gate configurations, Ewikon’s L2X drop-in hot runner system is pre-assembled and pre-wired, with nozzles directly attached to the manifold using a screw mechanism that consists of a connecting collar.

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Available in both hot-tip or valve-gate configurations, Ewikon’s L2X drop-in hot runner system is pre-assembled and pre-wired, with nozzles directly attached to the manifold using a screw mechanism that consists of a connecting collar. This design screws the nozzles to the manifold, but enables them to freely rotate during the installation in order to precisely align the connection cables with the cutouts in the mold. The nozzle position is then fixed by tightening the connecting collar, eliminating the possibility of plastic leakage between the manifold and nozzle. This system enables quick and easy disassembly of the nozzles for maintenance work, and then allows them to be easily be returned to the same positions.

The nozzles use an integrated heater design whereby the heater is pressed into a channel that is milled directly into the melt-carrying pressure tube. This is said to offer a theoretical advantage over conventional heating with heater bands or heater elements, because it provides direct heating of the pressure tube. According to the company, this design provides stable heating with minimal heat lost, resulting in an even temperature profile along the whole length of the nozzle and enabling the system to be used in processing of a range of materials, including engineering plastics and reinforced materials.

The L2X system comes with two fully balanced manifold versions, nozzles in lengths ranging to 350 mm and flow channel diameters from 6 mm to 12 mm. Customers can choose between open gating and valve gating, depending on application needs.