Electrically heated manifold system in an injection moulding str

Details Electrically heated manifold system in an injection moulding str Electrically heated manifold system in an injection moulding str

1995-08-18

1997-06-17

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

2643288, 26432814, 26432815, 425549, 425570, 425572, B29C 4572

Patent

active

056394896

ABSTRACT:
Electrically heated manifold system in an injection moulding structure, the system comprising a manifold element, the manifold element being adapted to direct molten plastics material from the extruding device to the mould-cavity, and bearing an inlet-gate at one side for connection to the outlet nozzle of a plastics extruding device, an elongate bore system leading from the said inlet-gate to at least one outlet-gate at the other side of the manifold-element to connect with at least one opening in a cavity-plate having a mould-cavity, the bore system branching into as many respective outlet-gates as there are openings in the corresponding cavity-plate, the manifold-element further having at least one elongated electrical heating body provided in heating relationship with the bore system and preferably distinct there from, the electrical heating body having opposite free in- and output ends projecting from the manifold-element, the ends connected by separate electrically isolated lead-elements to the respective in- and output of an electrical power supply, wherein the ends of the electrical heating body are each connected to the lead-elements by individual connector bodies having an outer surface of heat resistant, electrically isolating, preferably anorganic, material of e.g. ceramics, and an internal metal or equivalent electrically conductive body of heat resistant material and carrying fastening means to fix both the said ends and the lead-elements in an electrically conductive manner to the said internal electrically conductive body.

REFERENCES:
patent: 5227179 (1993-07-01), Benenati
patent: 5235737 (1993-08-01), Gellert
patent: 5266023 (1993-11-01), Renwick
patent: 5429491 (1995-07-01), Gellert
patent: 5507635 (1996-04-01), Gellert
patent: 5507636 (1996-04-01), Gellert

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