Injection nozzle having a heated head portion
AssigneeMold-Masters Limited
InventorsCraig Renwick, Denis Babin
Life of this patent
Estimating the term…
Abstract
An injection nozzle for an injection molding apparatus is provided. The injection nozzle includes a head portion, a body portion and a heater. The head and body portions are connected to each other and together define a nozzle melt channel. The head portion has a head portion outer surface. The head portion is adapted to be in contact with a molding apparatus component that is at a lower temperature than the head portion. The body portion has a body portion outer surface. A groove is defined in the head portion outer surface and the body portion outer surface. The heater wire is positioned in the groove. The heater is adapted to heat melt in the nozzle melt channel.
Claims14
An injection nozzle for an injection molding apparatus, comprising:
- a head portion and a body portion, wherein said head and body portions are connected to each other, said head and body portions together define a nozzle melt channel, said head portion has a head portion outer surface, wherein in use said head portion is adapted to be in contact with a molding apparatus component that is at a lower temperature than said head portion, and wherein said body portion has a body portion outer surface, and wherein a groove is defined in said head portion outer surface and said body portion outer surface;
- and
- a heater positioned in said groove, wherein said heater is adapted to heat melt in said nozzle melt channel.
An injection molding apparatus, comprising:
- a manifold block, said manifold block defining at least one runner therethrough, said runner being adapted to be downstream from and in fluid communication with a melt source,
- at least one injection nozzle, said at least one injection nozzle including a head portion, a body portion and a heater,
- wherein said head and body portions are connected to each other, said head and body portions together define a nozzle melt channel, said head portion has a head portion outer surface, wherein in use said head portion is in contact with a molding apparatus component that is at a lower temperature than said head portion, and wherein said body portion has a body portion outer surface, and wherein a groove is defined in said head portion outer surface and said body portion outer surface,
- and wherein said heater is positioned in said groove and is adapted to heat melt in said nozzle melt channel.
Dependencies are inferred from the claim text.