Patent ID: 6227007
Filing Date: 2001-05-08
Classification: C03B

Abstract:
A method of delivering molten thermoplastic material from one chamber to another through a refractory throat while inhibiting the corrosion of the refractory throat which comprises:flowing molten thermoplastic material from a first chamber into a first refractory metal standpipe at a level above the level of the floor of said first chamber,flowing the molten thermoplastic material from said first standpipe into an inlet end of a refractory metal conduit positioned at a level below the level of the floor of said first chamber and the floor of a second chamber,flowing the molten thermoplastic material from an outlet end of said conduit into a second refractory metal standpipe, andflowing the molten thermoplastic material outwardly from said second standpipe into said second chamber at a level above the level of the floor of said second chamber.