Patent · US Active

Process for the production of a moulding composed of foamed polytetrafluoroethylene

US8013030B2 · kind B2 · utility

0Cited by

4References

4Claims

0Family size

Assignee

NEXANS · FR

Inventors

Susanne Brix · Eckental, DE
Friedrich Müller · Achern, DE
Christian Lankes · Feucht, DE
Alfred Gemmel · Kalchreuth, DE
Olivier Pinto · Val-de-Reuil, FR
Mikael Abeguile · Chaponost, FR
Jerome Alric · L'Isle-d'Abeau, FR
Thierry Auvray · Val-de-Reuil, FR
Paul Kroushl · Lancaster, US

Key dates

Filing date	Nov 26, 2008
Grant date	Sep 6, 2011
Priority date	—
Expiry date	Dec 17, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2327/12
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A process for the production of a moulding composed of foamed polytetrafluoroethylene by means of an extruder, includes introducing a foaming agent, which brings about foaming, into the polytetrafluoro-ethylene, where the extruder used includes a commercially available extruder, to which a thermoplastically processable, fusible polytetrafluoroethylene is fed, the polytetrafluoroethylene is fed to the extruder together with a foaming agent which has chemical action and which has a decomposition temperature of at least 320° C., and after its discharge from the extruder, the moulding is drawn off in the direction of production without any further measures relating to the foaming procedure.

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