Method of making granules and the granulator
First Claim
1. A granulator comprising a perforate screen located within a housing, a roller having a curved convex outer surface and located within the housing wherein the roller is adapted to pivot relative to the perforate screen so that in operation, plastic material is able to be forced through the perforate screen by the roller surface as the roller pivots,wherein the thickness of the perforate screen is less than twice the diameter of a perforation therethrough.
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Accused Products
Abstract
A granulator comprising a perforate screen located within a housing, a roller having a curved convex outer surface wherein the roller is pivotable relative to the screen so that in operation plastic material is able to be forced through the perforate screen by the roller surface so the roller pivots. The granulator is useful for wet and dry granulation.
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Citations
18 Claims
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1. A granulator comprising a perforate screen located within a housing, a roller having a curved convex outer surface and located within the housing wherein the roller is adapted to pivot relative to the perforate screen so that in operation, plastic material is able to be forced through the perforate screen by the roller surface as the roller pivots,
wherein the thickness of the perforate screen is less than twice the diameter of a perforation therethrough.
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17. A method of extruding plastic material by forcing the material between a perforate screen located within a housing and a curved convex outer surface of a roller located within the housing by pivoting the roller relative to the perforate screen.
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18. A method of forming water dispersible granules by forming a wet mix of ingredients, extruding the wet mix into extrudates in a granulator having a roller with curved convex outer surface and a perforate screen by pivoting the roller relative to the screen thereby forcing the wet mix into extrudate, rolling the extrudate in a tumbling action to break down the extrudate into granules and optionally drying the granules.
Specification