Lightweight spun-bonded nonwoven fabric having special barrier properties

US7919420B2 · kind B2 · utility

Assignee

• Fiberweb Corovin GmbH · DE

Inventors

• Steffen Bornemann · Klein Ilsede, DE
• Markus Haberer · Berlin, DE

Key dates

• Filing date: Mar 20, 2009
• Grant date: Apr 5, 2011
• Expiry date: Mar 20, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/699
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a spun-bonded nonwoven fabric made of polyolefin filaments having a titer<1.6 dtex, the spun-bonded nonwoven fabric having a basis weight≦18 g/m2, a waterproofness of <15 cm measured as a water column, and an air permeability of at least 230 m3/(m2·min), wherein the product of the air permeability and the basis weight is ≦5000 g/(m·min).