Patent · US Expired

Laminates including two or more layers of organic synthetic filament non-wovens and glass fiber webs and scrims

US7351673B1 · kind B1 · utility

10Cited by

7References

25Claims

0Family size

Assignee

Johns Manville · US

Inventors

Werner Groh · Lich, DE
Michael Schops · Großaitingen, DE
Willi Seiβ · Wertheim, DE
Rolf Schwarz · Wertheim, DE
Monika Nagl · Augsburg, DE
Wofgang Greiser · Neuss, DE
Michael Zeiner · Wertheim, DE
Jürgen Umminger · Lauda-Königshofen, DE

Key dates

Filing date	Jul 19, 2000
Grant date	Apr 1, 2008
Priority date	—
Expiry date	Dec 31, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/682
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

In accordance with the invention, a laminate of two or more layers and the method of making it is provided. The laminate includes at least one organic synthetic filament non-woven layer, and at least one woven web or scrim of glass fibers pre-consolidated by a binding agent. The polyester non-wovens and the woven webs or scrims are bound by needling such that a part of the (e.g., polyester) filaments penetrate through the laminate and emerge at the lower surface of the laminate and lie adjacent thereto The formed laminate is subjected to a final consolidation by an acrylate or a styrene binder.

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