Patent · US Expired

Laminate

US5017426A · kind A · utility

23Cited by

1References

6Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Wolfgang Greiser · Neusäß, DE
Kurt Plotz · Idstein, DE
Hans Wagner · Rockenberg, DE
Karl-Christian Zerfass · Bobingen, DE

Key dates

Filing date	Feb 20, 1990
Grant date	May 21, 1991
Priority date	—
Expiry date	Feb 20, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/685
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A laminate which, when used as a carrier web for roofing and sealing sheets, shows good flammability properties combined with improved mechanical properties and which comprises a layer of synthetic fibers and a layer of mineral fibers is obtained by needling two preconsolidated fiber webs, of which one comprises synthetic fibers and the other mineral fibers. The needling produces a strong positive join of the two webs, as a result of which the tendency for the two layers to delaminate under extreme thermomechanical conditions is avoided.

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