Melt rheometer for the measurement of flow properties of foamable plastics and polymer compositions

摘要: An apparatus and method for the determination of flow properties thermoplastic materials in admixture with volatile liquids or other additives comprising an extruder which is employed to melt polymer admix therewith blowing agents additives. Subsequently molten mixture injected into extrusion plastometer rheometer extruding mixture, while still form, through a capillary orifice plastometer. When liquid are admixed extruder, adjustable linkage provided interconnecting whereby pumping rate agent can be variably adjusted positively within by reciprocal motion piston means