The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 30, 2026

Filed:

Dec. 16, 2020
Applicant:

Mondi Ag, Vienna, AT;

Inventors:

Elisabeth Schwaiger, St. Stefan, AT;

Paulus Goess, Klagenfurt, AT;

Assignee:

Mondi AG, Vienna, AT;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 27/08 (2006.01); B01D 39/18 (2006.01);
U.S. Cl.
CPC ...
D21H 27/08 (2013.01); B01D 39/18 (2013.01); B01D 2239/1258 (2013.01); B01D 2239/1291 (2013.01);
Abstract

A water vapour-permeable and hot water-resistant paper made substantially of cellulose and of manufacturing additives required for cellulose production, such as pH-value adjusting agents based on acids and/or bases, the paper exclusively contains cellulose with fibre lengths of at least 2.0 mm as a length-weighted mean, in particular of at least 2.5 mm as a length-weighted mean, wherein the cellulose forming the paper is a cellulose ground to a consistency of 30-35% by high-consistency grinding and possibly to a consistency of 4-6% by low-consistency grinding, a proportion of fines in the paper is set at values smaller than 6.5% and the pH value is set in the pseudo-neutral range, in particular at values under 7.5, preferably at values between 6.6 and 7.4, and an elongation of the paper in the machine direction is ≤3%.


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