Hot-extraction paper

US11939725B2 · kind B2 · utility

Assignee

• MONDI AG · AT

Inventors

• Elisabeth SCHWAIGER · Sankt Stefan, AT
• Franz Joebstl · Sankt Stefan, AT
• Reinhard KAINZ · Wolfsberg, AT

Key dates

• Filing date: Dec 11, 2019
• Grant date: Mar 26, 2024
• Expiry date: Apr 3, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D85/8043
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A hot-extraction paper consisting substantially of cellulose and manufacturing assistants needed in cellulose and manufacturing assistants needs in cellulose production, such as pH modifiers based on acids and/or bases, the paper comprises exclusively cellulose having fibre lengths of at least 2.0 mm on length-weighted average, more particularly at least 2.5 mm on length-weighted average, and has isotropic extension properties which are substantially equal in machine and cross directions and amount to at least 7.5%, more particularly at least 8.5%.