Apparatus and method for controlled pelletization processing

B - Operations – Transporting – 29 – C

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B29C 47/12 (2006.01)

Patent

CA 2631160

An apparatus and process maintain control of the temperature of low-melting compounds, high melt flow polymers, and thermally sensitive materials for the pelletization of such materials. The addition of a cooling extruder, and a second melt cooler if desired, in advance of the die plate provides for regulation of the thermal, shear, and rheological characteristics of narrow melting-range materials and polymeric mixtures, formulations, dispersions or solutions. The apparatus and process can then be highly regulated to produce consistent, uniform pellets of low moisture content for these otherwise difficult materials to pelletize.

La présente invention concerne un appareil et un procédé maintenant un contrôle de la température de composés à bas point de fusion, de polymères à indice de fluage élevé, et de matériaux thermosensibles destinés à la pelletisation de tels matériaux. L~ajout d~une extrudeuse à refroidisseur, et d~un second refroidisseur de fusion si nécessaire, en amont de la plaque de la filière est destiné à une régulation des caractéristiques thermiques, rhéologiques et de cisaillement de matériaux à intervalle de fusion étroit et de mélanges polymères, de compositions, de dispersions ou de solutions. L~appareil et le procédé peuvent être hautement régulés en vue de produire des pastilles uniformes et cohérentes présentant une faible teneur en humidité pour ces matériaux qui, sans cela, sont difficiles à pelletiser.

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