Patent · US Expired

Spinning pack with sand filter

US5795595A · kind A · utility

5Cited by

8References

9Claims

0Family size

Assignee

Zimmer, Inc. · US

Inventors

Heinz-Dieter Beeck · Frankfurt am Main, DE
Bernd Kretschmann · Kronberg, DE
Wilhelm Sprick · Bockenem, DE

Key dates

Filing date	Sep 9, 1996
Grant date	Aug 18, 1998
Priority date	—
Expiry date	Sep 9, 2016

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01D1/106
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A spinning pack with a sand filter for the melt spinning of thermoplastics, whereby at least one perforated plate with evenly distributed D-shaped holes with slanting openings that taper conically in the direction of flow is placed in the direction of flow in front of and/or behind the sand filter. Spinning packs according to the invention surprisingly give highly uniform distribution and flow of thermoplastic melt through the sand filter.

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