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US 5,125,752 AGranted
Mixer
AssigneeNDSU Research Foundation
InventorsHans J. Goettler, Victoria D. Kuntz
Life of this patent
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AssigneeNDSU Research Foundation
InventorsHans J. Goettler, Victoria D. Kuntz
Estimating the term…
This shear mixer for polymeric material has two mateable bodies that, when pressed in mating condition together, form a reverse flow path for the movement of the material being mixed. The mixer has two mixing gaps, each defined by a primary wall surface on one body and an opposing wall surface on the other. Contractive movement of the two bodies together effectively causes the linear length of each mixing gap to increase and also causes one wall of each mixing gap to move in a direction opposite to the flow of material through the mixing gap. The mixing method involves not only increasing the length of a mixing gap as material is pushed through it for mixing, but also causing flow of material through one mixing gap to be in a direction opposite but parallel to the flow of material through the other mixing gap.
A mixer for polymeric materials, comprising a first body having a primary wall surface for a mixing gap, and a second body having an opposing wall surface for said mixing gap, said first and second bodies being linearly slideable with respect to each other, said second body being oriented to said first body so that said opposing wall surface is in parallel spaced relationship to said primary wall surface, whereby contractive movement of said first and second bodies together in a linear direction parallel with said primary and opposing wall surfaces effectively lengthens the linear length of said mixing gap.
A mixer for polymeric materials, comprising two mateable bodies that, when pressed in mating condition together, form a reverse flow path for the movement of the material being mixed, said mixer having a premix space in one of said bodies and an intermediate space in the other of said bodies, and a first gap defined by spaced wall surfaces through which material in said premix space exits said premix space in a first direction into said intermediate space and a second gap defined by spaced wall surfaces through which material in said intermediate space exits said intermediate space in a second directing as said bodies are pressed in mating condition together, said second direction being opposite and essentially parallel to said first direction.
A mixer for polymeric materials, comprising first and second mateable bodies:
A method of mixing a polymeric mass, comprising pushing the polymeric mass through a mixing gap defined by spaced apart wall surfaces while simultaneously increasing the length of the gap as the mass is pushed therethrough.
A mixer for polymeric materials, comprising a first body having a primary wall surface for a mixing gap, and a second body having an opposing wall surface for said mixing gap, said first body including a premix space and said second body including a plunger for pushing material from said premix space through said mixing gap, said second body being oriented to said first body so that said opposing wall surface is in parallel spaced relationship to said primary wall surface, whereby contractive movement of said first and second bodies together in a linear direction parallel with said primary and opposing wall surfaces effectively lengthens the linear length of said mixing gap.
Dependencies are inferred from the claim text.