Electrical heater for heating substantially cylindrical objects
AssigneeGunther Heisskanaltechnik GmbH
InventorsHerbert Gunther, Siegrid Sommer, Frederic Zimmermann
Life of this patent
Estimating the term…
Abstract
The present invention relates to an electric heater (22) to heat substantially cylindrical objects (12), in particular hot runner nozzles (10) of hot runner systems, essentially being fitted with at least one cylindrical support and with at least one heating conductor track (28) deposited on the support (12). To reduce premature failure of the heater, the invention stipulates that each heating conductor track (28) runs substantially in the axial direction (A) of said support (12), the heating conductor tracks (28) being connected to each other by conductor tracks (30) of lower electrical resistance and each conductor track (30) running essentially in the tangential direction (T) of the support (12).
Claims22
Electric heater (22) to heat substantially cylindrical objects (12), in particular hot runner nozzles (10) of hot runner systems, comprising at least one cylindrical support and at least one heating conductor track (28) mounted on said support (12),
- characterized
- in that each heating conductor track (28) essentially runs in the axial direction (A) of the support 12, in that the heating conductor tracks (28) are electrically connected to each other by conductor tracks (30), each track (30) essentially running in the tangential direction (T) of the support (12), and in that the conductor tracks (30) present a lower electrical resistance than do the heating conductor tracks (28).
Dependencies are inferred from the claim text.