Italy's Thermoplay has developed a new hot runner manifold that makes the latest innovations in hot half design available to the injection blow moulding sector.
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Thermoplay
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Thermoplay
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Thermoplay
In the most common applications the injection system is made up of an unbalanced manifold with the nozzles threaded onto it. The nozzles are often free flow and they are heated by the heat transferred by conduction from the manifold.
The new Thermoplay design - which forms part of Thermoplay's Fakuma exhibit - is made up of a manifold with balanced flow channels with nozzles that are assembled to it only by mechanical compression (seated nozzles). This technology allows the nozzles to be always centered within the cavity, reducing the wear in the coupling zone. The nozzle plate is conditioned to have the same temperature as the mould (30°C).
An outer body is screwed externally on each nozzle to allow ease of removal, which couples with the forming cavity. All Thermoplay nozzles are provided with plastic sealing zones in order to avoid any plastics leakage and to guarantee a high quality injection point on the preform.
Material is uniformly distributed on the product, facilitating even wall thickness, while there are no strands at the injection point, and no colour streaks or discolouring.
Other benefits of Thermoplay's new hot runner technology include:
- Tighter tolerances on the bottleneck
- Temperature detection close to the injection point
- Uniform heat distribution on the whole nozzle length
- Nozzle bushing replaceable with nozzle drive and tightness
- Complete self-standing hot half, ready for installation and suitable to any press machine
- Direct injection systems with shut off option.
Hall B3 | Stand 3118
