Patent · US Active

Method of making a spunbond

US7981357B2 · kind B2 · utility

1Cited by

2References

12Claims

0Family size

Assignees

REIFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE
Fleissner GmbH · DE

Inventors

Sebastian Sommer · Troisdorf, DE
Willi Liebscher · Könnern, DE

Key dates

Filing date	Mar 6, 2008
Grant date	Jul 19, 2011
Priority date	—
Expiry date	Jul 12, 2029

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD04H3/11
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A spunbond web is made by extruding a multiplicity of hot thermoplastic filaments, passing the filaments along an upstream stretch of a path, cooling and stretching the filaments as they move along the upstream stretch of the path, and depositing the cooled and stretched filaments at a downstream end of the upstream stretch on a foraminous belt such that the filaments form a mat thereon. The belt is continuously displaced the belt so as to move the mat downstream along a downstream leg of the path. The mat on the belt, then consolidated with a high-pressure water-jet treatment, and further processed.

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