Non-woven laminate composite

US7199065B1 · kind B1 · utility

Assignee

• Johns Manville · US

Inventors

• Werner Groh · Lich, DE
• Michael Schops · Großaitingen, DE
• Jörg Lehnert · Birkenfeld, DE

Key dates

• Filing date: Jul 19, 2000
• Grant date: Apr 3, 2007
• Expiry date: Nov 25, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/682
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The present invention provides non-woven laminate that is not subjected to final consolidation by a binder and the production thereof. The laminate includes at least one non-woven mat containing glass staple fibers pre-consolidated with a resin, and at least one non-woven layer of synthetic fibers. The synthetic non-woven layers and the pre-consolidated non-woven mat of glass fibers are bounded together by needling such that a portion of the fibers of the upper synthetic non-woven layer passes through the non-woven mat of glass fibers possibly through the underlying synthetic non-woven layer. The synthetic fibers are heat shrunken and the laminate is binder free.