Extrusion method and apparatus for producing a body from powder material
AssigneeCorning Incorporated
InventorsClarence E. Ford, Donald L. Guile, Lucretia R. Quatrini
Life of this patent
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Abstract
An improvement in a method and apparatus is provided in extruding a powder material to form an article, in which the material is passed through an extruder and then through a die, wherein the material is provided in the form of a mixture which includes a vehicle, the improvement comprising having one or more gear pumps in succession between the extruder and the die, so that the powder material passes through the gear pump(s) after it leaves the extruder and before it enters the die. The gear pump(s) can have one or more pair of gears which are arranged sequentially with respect to the flow of the material.
Claims20
In the method of extruding a powder material to form an article, which method includes the steps of passing said material through an extruder and then passing said material through a die, wherein said powder material is provided in the form of a mixture which includes a vehicle, the improvement which comprises the step of passing said material through one gear pump after said material leaves said extruder and before it enters said die, said one gear pump having one or more pair of gears, wherein when said one gear pump has more than one pair of gears, said gear pairs are arranged sequentially with respect to the flow of said material.
In an apparatus suitable for extruding a powder material to form an article, which apparatus includes an extruder and a die, wherein said powder material passes through said extruder and then through said die, and wherein said powder material is provided in the form of a mixture which includes a vehicle, the improvement which comprises having one more gear pumps between said extruder and said die, whereby said powder material passes through said one or more gear pumps after it leaves said extruder and before it enters said die, wherein when there is one gear pump, said one gear pump has more than one pair of gears.
Dependencies are inferred from the claim text.