High speed extrusion
Series-SHR-High-Speed-Mixer Spring-Loader
Process consists on steady state melt extruding unfoamed extrudate of molten thermoplastic polymer, the aforementioned melt extruding being carried out wherein a polymer has foam cell nucleating agent incorporated therein and is made up from laminar flow of said polymer, this melt extruding being conveying out at a shear rate which is at least 1.2 times the shear rate at which the onset of surface roughness for said extrudate takes place in the lack of mentioned foam cell nucleating agent and laminar flow, said extrudate being unacted on surface roughness, the amount of said foam cell nucleating agent being effective to afford the surface free of surface roughness, the foam cell nucleating agent being thermally stable during said extruding, and gained said unformed extrudate as a result of it, whereas the articles obtained from said unfoamed extrudate are unfoamed also .
Process consists on steady state melt extruding unfoamed extrudate of molten thermoplastic polymer, the aforementioned melt extruding being carried out wherein a polymer has foam cell nucleating agent incorporated therein and is made up from laminar flow of said polymer, this melt extruding being conveying out at a shear rate which is at least 1.2 times the shear rate at which the onset of surface roughness for said extrudate takes place in the lack of mentioned foam cell nucleating agent and laminar flow, said extrudate being unacted on surface roughness, the amount of said foam cell nucleating agent being effective to afford the surface free of surface roughness, the foam cell nucleating agent being thermally stable during said extruding, and gained said unformed extrudate as a result of it, whereas the articles obtained from said unfoamed extrudate are unfoamed also .
