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Injection nozzle with planar heater
| Details |
Inventors: Olaru, George;
Assignee: Mold-Masters Limited (Georgetown, CA)
Primary Examiner: Heitbrink; Tim
Assistant Examiner:
Attorney, Agent or Firm:
A system and method for making molded parts that include one or more planar heaters coupled, secured, or releaseably secured to one or more sides of each of the one or more nozzles. The releasably secure coupling allows heater device to be visually inspected, tested, removed, and/or replaced. The planar heater device can have a support device patterned with an electrical resistive path. The electrical resistive path can include any pitch or number of electrical resistance lines, such that a longitudinal uniform heat profile is generated along a melt flow channel of the one or more nozzles when the nozzles are in use. |
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DETAILED DESCRIPTION Embodiments of the present invention provide a system including one or more nozzles having at least one flat outer surface and a releaseably securable patterned planar heater (e.
g.
, rigid, flexible, film, etc.
) device coupled to the one or more flat nozzles.
The one or more flat nozzles can have at least one flat outer surface and one curved outer surface, a square cross-section, a rectangular cross-section, or a triangular cross-section.
The planar heater device can include an electrical resistive path patterned on a support device.
The patterned resistive path can be configured to generate a longitudinal uniform heat profile along a melt flow channel.
The planar heater device can be coupled to one or more sides and one or more sections of each of the one or more nozzles.
Other embodiments of the present invention provide a method of manufacturing including producing a sheet including one or more patterned planar heater devices, removing a portion of the sheet corresponding to a size of one or more flat nozzles, and releasably coupling the portion of the sheet to the one or more flat nozzles.
The method can also include patterning an electrical resistive path on each of the one or more patterned planar heater devices.
The method can also include using the electrical resistive path to generate a longitudinal uniform heat profile along a melt flow channel of the one or more flat nozzles.
Further embodiments, features, and advantages of the present inventions, as well as the structure and operation of the various embodiments of the present invention, are described in detail below with reference to the accompanying drawings.
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Nonmetallic Processes 
