logo

For the Inventor, By the Inventor

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.

Patent No.:

US 11885072 B1

PDFFull Text
Date of Patent:
Jan. 30, 2024

Filed:

Nov. 16, 2022

Water-dispersible composite structure and method of producing the same

Applicant:

Paptic Oy, Espoo, FI;

Inventors:

Karita Kinnunen-Raudaskoski, Espoo, FI;

Martin Häggblom, Espoo, FI;

Assignee:

Paptic Oy, Espoo, FI;

Attorney:

Laine IP Oy

Primary Examiner:

Mark Halpern

Int. Cl.
CPC ...
D21H 11/04 (2006.01); D21H 27/00 (2006.01); D21H 11/12 (2006.01); D21H 11/14 (2006.01); D21H 13/14 (2006.01); D21H 13/24 (2006.01); D21H 13/28 (2006.01); D21H 17/35 (2006.01); D21H 17/36 (2006.01); D21H 17/37 (2006.01); D21H 17/57 (2006.01); D21H 21/16 (2006.01); D21H 23/28 (2006.01); D21H 23/34 (2006.01); D21H 23/56 (2006.01);
U.S. Cl.
CPC ...
D21H 27/002 (2013.01); D21H 11/04 (2013.01); D21H 11/12 (2013.01); D21H 11/14 (2013.01); D21H 13/14 (2013.01); D21H 13/24 (2013.01); D21H 13/28 (2013.01); D21H 17/35 (2013.01); D21H 17/36 (2013.01); D21H 17/37 (2013.01); D21H 17/57 (2013.01); D21H 21/16 (2013.01); D21H 23/28 (2013.01); D21H 23/34 (2013.01); D21H 23/56 (2013.01);
Abstract

A water-dispersible composite structure, which comprises one or more layers, and a method of producing the same. At least a part of the layers is formed by a fibrous web or sheet containing 50-90 parts by weight of wood fibers and 10-90 parts by weight of annual or perennial plant fibers and/or 10-50 parts by weight of synthetic short-cut fibers, and 0.1-20% by weight of a binder, calculated from the weight of the fibers, and at least a part of the binder being a water-soluble polymer and another part a water dispersible binder, and the fibrous sheet or web being produced by wet forming. By means of the invention, the fibers of the composite structure can be recovered and recycled by equipment conventionally used in the paper and paperboard industry.

Find Patent Forward Citations

Loading…