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:
Sep. 17, 1996
Filed:
Mar. 24, 1995
Valmet Corporation, Helsinki, FI;
Abstract
A method for contact drying a paper web, wherein the paper web is dried by heated smooth-faced drying cylinders by passing the web through successively arranged so-called normal groups with single-wire draw in which drying cylinders are situated in a first row and reversing suction cylinders or equivalent suction rolls are situated in a second row. Thereafter, the web is dried by passing it through a hybrid dryer group which hybrid dryer group consists of a normal portion with single-wire draw and a portion with twin-wire draw, one of the wires in the twin-wire portion constituting the wire of the portion with single-wire draw whereas the other wire in the twin-wire portion is a separate wire. The invention also relates to a dryer section of a paper machine wherein the initial part includes successively arranged so-called normal groups with single-wire draw after which one hybrid dryer group is provided, in which there is a portion with single-wire draw and a portion with twin-wire draw. In the hybrid group, one row includes drying cylinders over which the wire of the single-wire draw runs, and the other row includes reversing cylinders, suction rolls or equivalent, and drying cylinders. A separate wire runs over the drying cylinders in this row.