Manufacture of thermoplastics fibrids

US4210615A · kind A · utility

Assignee

• BASF SE

Inventors

• Peter Engler · River Falls, US
• Otto Nagel
• Leo Unterstenhofer, deceased · Schifferstadt, DE
• Hans Frielingsdorf · Bad Dürkheim, DE
• Heinz Berbner · Prüm, DE
• Heinz Mueller-Tamm
• Dieter Stoehr · Mutterstadt, DE

Key dates

• Filing date: Dec 31, 1975
• Grant date: Jul 1, 1980
• Expiry date: Dec 31, 1995

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F6/04
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A process for the manufacture of thermoplastics fibrids, in which a solution of the thermoplastics material is fed to an impulse exchange chamber, where it is cooled so as to cause precipitation of the thermoplastics material, while it is subjected to a field of turbulent shear forces caused by the introduction of a gaseous or liquid medium into the said impulse exchange chamber.