Spunbond laminate and method of making same

US12343975B2 · kind B2 · utility

Assignee

• REIFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE

Inventors

• Tobias Wagner · Cologne, DE
• Sebastian Sommer · Troisdorf, DE
• Patrick Bohl · Petershohn, DE
• Andreas Roesner · Bonn, DE
• Hans-Georg Geus · Niederkassel, DE
• Gerold Linke · Petershohn, DE
• Bernd Kunze · Hennef (Sieg), DE

Key dates

• Filing date: Oct 24, 2023
• Grant date: Jul 1, 2025
• Expiry date: Oct 24, 2043

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D10B2331/04
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A spunbond nonwoven laminate has a first spunbond nonwoven layer having crimped filaments formed by a first component on an outer surface of the filaments of the first layer consisting or substantially consisting of a polyolefin and a second component consisting or substantially consisting of a plastic having a higher melting point than the polyolefin of the first component of the filaments of the first layer. A second outermost spunbond nonwoven layer on the first layer having filaments as a cover layer and formed by a first component on an outer surface of the filaments of the second layer consisting or substantially consisting of a polyolefin, and a second component consisting or substantially consisting of a plastic having a higher melting point than the polyolefin of the first component of the filaments of the second layer.