Apparatus and process for the manufacture of fibrils

Details Apparatus and process for the manufacture of fibrils Apparatus and process for the manufacture of fibrils

D - Textiles, Paper

01

D

18/500

D01D 5/26 (2006.01) D01D 5/18 (2006.01)

Patent

CA 1101163

APPARATUS AND PROCESS FOR THE MANUFACTURE OF FIBRILS ABSTRACT OF THE DISCLOSURE Centrifugal spinning apparatus is provided for the manufacture of fibrils from hot viscous hydrocarbon solutions of olefin polymers having an intrinsic viscosity of at least 3.5. The apparatus consists of an impeller which rotates at high speed in a cylindrical cavity having a discharge port. The impeller has a plurality of blades whose narrow dimensions lie substantially in the plane of the impeller's rotation and whose tips come in close proximity to the inner peripheral surface of the cylindrical cavity. The blades are arranged in at least two substantially-identical sets. Within each set, the blades are offset substantially equidistant from one another, both in the rotational plane of the impeller and in the plane transverse thereto. Two iulet ports are provided in the peripheral surface of the cylindrical cavity to feed liquids to the cylindrical cavity, each of which port is narrow in a plane transverse to the plane of the impeller's rotation and extends over substantially the entire peripheral surface. The inlet ports are positioned near the discharge port of the cylindrical cavity and upstream thereof viewed with respect to the impeller's rotation, so that the bulk of the liquids entering the cavity from the inlet ports are swept away from the discharge port by the impeller's rotation.

305837

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