Patent · US Expired

Support web for roof foundation webs

US4987027A · kind A · utility

5Cited by

1References

7Claims

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	Sep 12, 1989
Grant date	Jan 22, 1991
Priority date	—
Expiry date	Sep 12, 2009

Classification

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

Abstract

A support web is described for roof foundation webs which comprises a spunbonded web of polyester filaments. The spunbonded web has a basis weight of 50 to 100 g/m.sup.2 and a filament denier of 1 to 8 dtex. It has been thermomechanically preconsolidated by means of a smooth calender and end-consolidated by means of a binder. This produces a high tear propagation resistance and nail removal resistance and good dimensional stability at high temperatures. The spunbonded web is therefore particularly suitable for use as a support web for bituminized roof foundation webs.

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