METHOD AND APPARATUS FOR HOLLOW CORE EXTRUSION OF HIGH VISCOSITY MATERIALS
A method and apparatus for dispensing a foamable, pressurized solution of a gas and a high viscosity polymeric material in a manner which produces a foamed bead (100) having a hollow core. Initial foaming (57) occurs in a nozzle (12) through which the solution is dispensed to atmosphere, at the core...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
18.02.1992
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Subjects | |
Online Access | Get full text |
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