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.:
Date of Patent:
Dec. 02, 1997
Filed:
Feb. 03, 1995
Helmer Gustafsson, Valkeakoski, FI;
Stephan Favre, Risskov, DK;
Yhtyneet Paperitehtaat Oy, Valkeakoski, FI;
Abstract
The invention relates to a method for manufacturing an absorbent fibre layer (15), and an absorbent fibre layer. In the method, at least one material layer (16) consisting of a mixture of natural fibres, such as wood fibres, and plastic fibres is formed by a dry-forming technique, and at least one other material layer (17) consisting of natural fibres, or a mixture of natural fibres and plastic fibres, and superabsorbent material (18) is formed on said material layer. The fibre layer (15) is bonded with heat. The invention is characterized in that the superabsorbent material (18) is added to the second material layer (17) to be formed in connection with its dry-forming stage, after which the upper surface of the fibre layer is compacted and its lower surface is moistened and compressed by hot calendering in order to compress the material layer (16) comprising no superabsorbent material into a liquid-spreading layer.