Blow needle for extrusion blow molding PET
AssigneeGraham Packaging Company, L.P.
InventorsJason E. Burns, Larry M. Taylor, Wayne Perring
Life of this patent
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Abstract
The present invention relates to a hollow blow needle for introducing a pressurized fluid into an extruded parison enclosed by two mold halves, the needle comprising: a body portion having an inner first diameter; a neck portion having an inner second diameter, wherein the inner second diameter is less than the inner first diameter; and a tip portion comprising a first angled portion, a second angled portion that is a different angle relative to the first angled portion, and an orifice.
Claims19
A hollow blow needle for introducing a pressurized fluid into an extruded parison enclosed by two mold halves, the needle comprising:
- a body portion having a first inner diameter;
- a neck portion having a second inner diameter, wherein the second inner diameter is less than the first inner diameter;
- and
- a double-tapered tip portion comprising a first angled portion, a second angled portion that is a different angle relative to the first angled portion, and an orifice.
A blow needle for introducing a pressurized fluid into an extruded parison enclosed by two mold halves, the needle comprising:
- a body portion having an inner diameter of from about 0.201 in. to about 0.211 in.;
- a neck portion having an inner diameter of from about 0.141 in. to about 0.158 in.;
- and
- a tip portion comprising a first angled portion having an angle of from about 78.7° to about 88.7°, a second angled portion having an angle of from about 5° to about 15°, and an orifice.
Dependencies are inferred from the claim text.