Spinning device for spinning molten polymers and method for heating the spinning device

US6736624B1 · kind B1 · utility

Assignee

• Zimmer, Inc. · US

Inventors

• Rainer Tietze · Nauheim, DE
• Heinz-Dieter Beeck · Frankfurt am Main, DE
• Thomas Gries · Solon, US
• Werner Mrose · Maintal, DE
• Richard Prehler · Oberstdorf, DE

Key dates

• Filing date: Nov 20, 2001
• Grant date: May 18, 2004
• Expiry date: Nov 20, 2021

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01D1/09
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a spinning device in which liquid polymer is guided through a polymer line with a first heating jacket to a spinning pump with a second heating jacket. From said spinning pump, the polymer is transported through several lines to spinning packets and extruded through spinnerts to form filaments. The lines that are connected downstream of the spinning pump, the spinning packets and the spinnerets are located in at least one spinning housing through which heating fluid flows. There is a distance of 5 mm between the spinning housing through which the heating fluid flows and the first and second heating jackets and the spinning pump, to obtain thermal decoupling. According to a method for heating the spinning device, vaporous heating fluid is guided out of a first reservoir into the spinning housing, and heating fluid is guided out of a second reservoir into the first and/or second heating jacket. The temperature of the heating fluid that is supplied to the spinning housing is 10 to 40° C. higher than the temperature of the heating fluid that is supplied to the first and/or second heating jacket.