Patent ID: 6232436
Filing Date: 2001-05-15
Classification: B29B,B29K

Abstract:
A process for granulating a polyamide resin comprising:(a) providing an underwater granulating device having a heated multiple-bore die wherein the bores have an internal diameter ranging from 1.2 to 2.5 mm and a length of from 12 to 50 mm;(b) providing a polyamide resin melt having a viscosity, at 160.degree. C., of less than 3,000 mPas;(c) cooling the polyamide resin melt to form a cooled polyamide resin;(d) introducing the cooled polyamide resin into and through the heated multiple-bore die to form an extrudate;(e) providing a source of cooling water;(f) contacting the extrudate with the water to form a cooled extrudate; and(g) cutting the cooled extrudate into granules.