Patent · US Expired

Method of preparing filled, modified and fiber reinforced thermoplastics and twin screw extruder for putting the method into practice

US6419864B1 · kind B1 · utility

16Cited by

6References

3Claims

0Family size

Assignee

Krupp, Werner & Pfeiderer GmbH · US

Inventors

Bernhard Scheuring · Stuttgart, DE
Erwin Haring · Stuttgart, DE
Daniel Schwendemann · Gerlingen, DE

Key dates

Filing date	Oct 12, 1999
Grant date	Jul 16, 2002
Priority date	—
Expiry date	Oct 12, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29K2105/16
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method of preparing filled, modified and fiber reinforced thermoplastics is distinguished by the fact that polymer as matrix material together with blend polymer is fed to a twin screw extruder in a single manufacturing process, filler being supplied through a feeder device after the melting. Then fiber rovings are fed in and cut into long fiber sections in a fiber incorporation zone.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.