Ventilation insert

US10161080B2 · kind B2 · utility

Assignee

• Carl Freudenberg KG · DE

Inventors

• Gerald Jarre · Weinheim, DE
• Birger Lange · Darmstadt, DE
• Volker Braeunling · Heppenheim, DE
• Thomas Arnold · Winslow, US
• Iain Smith · Swindon, GB
• Nermina Zaplatilek · Birkenau, DE
• Stephanie Lambertz · Hirschberg, DE
• Ulrich Schneider · Darmstadt, DE
• Dominic Kramer · Frankfurt, DE

Key dates

• Filing date: Mar 4, 2014
• Grant date: Dec 25, 2018
• Expiry date: Aug 28, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/2926
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A ventilation insert for textiles, with at least one layer, covered at least partially by an absorption material and having ventilation openings, the openings being at least partially closeable via a liquid by swelling of the absorption material, obtainable by: a) treating a layer having ventilation openings with a mixture, containing a wetting agent, initiator, polymerizable monomer or oligomers, and a cross-linking agent, as a preliminary stage for the absorption material; and b) polymerizing the monomer or oligomer to form the absorption material while forming a bonded connection between the absorption material and the layer. The ventilation insert has a relatively low thickness, a low weight per unit area, and high flexibility permanently and independently of moisture after economical production, via one layer, self-sealingly closing ventilation openings, and containing the absorption material. The absorption material is connected to the layer by bonding, at least in some regions.