Method of making a spunbond

Details Method of making a spunbond Method of making a spunbond

2011-07-19

2011-07-19

Tentoni, Leo B (Department: 1742)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

C028S104000, 26, 26, 26, 26, 26

Reexamination Certificate

active

07981357

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.

REFERENCES:
patent: 3562771 (1971-02-01), Fridrichsen
patent: 7455800 (2008-11-01), Ferencz et al.
patent: 2002/0033562 (2002-03-01), Kauschke et al.
patent: 2003/0178742 (2003-09-01), Geus
patent: 2006/0014464 (2006-01-01), Noelle
patent: 1340843 (2003-09-01), None

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