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US 12,000,088 B2Granted
Papermaking machine with press section
AssigneeStructured I, LLC
InventorsJames E. Sealey, II, Byrd Tyler Miller, IV, Marc Paul Begin, Theodore D. Kennedy
Life of this patent
Estimating the term…
Abstract
A machine or apparatus for producing structured tissue or towel using a press section.
Claims27
A papermaking machine comprising:
- (A) a dewatering fabric;
- (B) a press section for pressing a partially dewatered paper web, the press section comprising:
- (i) a first press element with an inside surface of the dewatering fabric in contact with the first press element;
- (ii) a structuring belt with an inside surface of the structuring belt in contact with a suction element;
- and
- (iii) a first nip, formed between the dewatering fabric in contact with the first press element and the structuring belt in contact with the suction element, in which the partially dewatered paper web is pressed and transferred to the structuring belt;
- and
- (B) a drying section for drying the partially dewatered paper web to form a dried web, the drying section comprising:
- (i) a second press element with the inside surface of the structuring fabric in contact with the second press element;
- (ii) a steam heated cylinder;
- and
- (iii) a second nip, formed between the structuring fabric in contact with the second press element and the steam heated cylinder, in which the partially dewatered paper web is pressed and transferred to the steam heated cylinder,
- wherein the dried web is creped off the steam heated cylinder.
10 more elements
The papermaking machine of 1, wherein the first press element is an extended nip press.
A method for making paper comprising:
- (A) forming a partially dewatered paper web by passing a nascent paper web through a first dewatering section of a papermaking machine comprising a suction roll and a first steam box;
- (B) pressing the partially dewatered paper web at a press section of the papermaking machine, the press section comprising:
- (i) a first press element with an inside surface of a dewatering fabric in contact with the first press element;
- (ii) a structuring belt with an inside surface of the structuring belt in contact with a suction element;
- and
- (iii) a first nip, formed between the dewatering fabric in contact with the first press element and the structuring belt in contact with the suction element, in which the partially dewatered paper web is pressed and transferred to the structuring belt;
- (C) drying the partially dewatered paper web at a drying section of the papermaking machine to form a dried web, the drying section comprising:
- (i) a second press element with the inside surface of the structuring fabric in contact with the second press element;
- (ii) a steam heated cylinder;
- and
- (iii) a second nip, formed between the structuring fabric in contact with the second press element and the steam heated cylinder, in which the partially dewatered paper web is pressed and transferred to the steam heated cylinder, wherein the structuring fabric at the second nip is compressed resulting in a top plane of a first element of the structuring fabric being in substantially the same plane as a top plane of a second element of the structuring fabric;
- and
- (D) creping the dried web off the steam heated cylinder.
10 more elements
Dependencies are inferred from the claim text.