Patent · US Expired

Support web for roofing membranes

US5130178A · kind A · utility

20Cited by

0References

11Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Karl-Christian Zerfass · Bobingen, DE
Franz Kaulich · Bobingen, DE
Michael Schops · Großaitingen, DE
Hans Wagner · Rockenberg, DE
Bertrand Weiter · Bobingen, DE

Key dates

Filing date	Mar 12, 1991
Grant date	Jul 14, 1992
Priority date	—
Expiry date	Mar 12, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/681
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

There is described a support web for roofing membranes which comprises a spunbonded made of polyester filaments. The spunbonded has a basis weight of from 50 to 100 g/m.sup.2 coupled with a filament denier of from 1 to 8 dtex and has been consolidated with a fusible binder. This produces a high tear propagation resistance and nail pullout strength and also good dimensional stability at high temperatures. The spunbonded support web is therefore particularly suitable for bitumenized roofing membranes.

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