Patent · US Expired

Process and apparatus for the production of plastic strands

US4446089A · kind A · utility

3Cited by

6References

7Claims

0Family size

Assignee

BASF SE

Inventors

Hugo Strehler · Bischofswerda, DE
Guenter Valentin · Ludwigshafen, DE
Werner Hoerauf · Ludwigshafen, DE

Key dates

Filing date	Jan 28, 1983
Grant date	May 1, 1984
Priority date	—
Expiry date	Jan 28, 2003

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01D13/00
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A melt of synthetic material is forced through orifices of a die plate, and the resulting strands of melt are led into a trough, where they travel in counter-current to a stream of cooling water. At the end of the trough, the strands are discharged, for further processing. The bottom of the trough merges into a vertical pipe and the melt strands are led into this pipe and out again, in a variable loop, in order to obtain the desired length of cooling path.

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