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:
Jan. 26, 2021
Filed:
Apr. 15, 2019
Valmet Aktiebolag, Sundsvall, SE;
Hans Ivarsson, Karlstad, SE;
Anders Ottosson, Karlstad, SE;
VALMET AKTIEBOLAG, Sundsvall, SE;
Abstract
The invention relates to a method of producing a structured fibrous web of paper suitable for tissue products. The method comprises forming a fibrous web and conveying the formed fibrous web on a water receiving felt () to a dewatering nip. An endless steel belt () with a smooth steel surface is passed through the nip together with the fibrous web and the water receiving felt () wherein the endless steel belt is heated by heaters (HE, HE). After the dewatering nip, the fibrous web is conveyed by the endless steel belt () to an endless textured fabric () which is permeable to air and to which the web is transferred from the endless steel belt () in a transfer nip. The textured fabric () runs at a lower speed than the endless belt (). After the transfer to the textured fabric (), the fibrous web is carried by the textured fabric () to a drying cylinder (). The transfer nip is formed by two rolls of which one is a suction roll within the loop of the textured fabric. The transfer nip has a length which is 5 mm-40 mm. The endless steel belt () has a width that exceeds the width of the textured fabric (). The invention also relates to a corresponding machine.