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US 12,703,944 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.
Claims25
A papermaking machine comprising:
- (A) a wet section for forming a nascent paper web, the wet section comprising a gap former into which is deposited a paper slurry from a headbox to form the nascent paper web, the gap former comprising:
- (i) a forming wire;
- and
- (ii) a dewatering fabric, the dewatering fabric running in an endless loop about a forming roll, a suction roll and a first press element;
- (B) a first dewatering section comprising the suction roll and a first steam box through which passes the nascent paper web to form a partially dewatered paper web;
- (C) a press section for pressing the partially dewatered paper web, the press section comprising:
- (i) the 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;
- (D) a second dewatering section comprising a hot air hood and a through air drying (TAD) drum, through which passes the partially dewatered paper web travelling on the structuring belt;
- and
- (E) 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.
15 more elements
The papermaking machine of 1, wherein the first press element is an extended nip press.
A papermaking machine comprising:
- (A) a wet section for forming a nascent paper web, the wet section comprising a gap former into which is deposited a paper slurry from a headbox to form the nascent paper web, the gap former comprising:
- (i) a forming wire;
- and
- (ii) a dewatering fabric, the dewatering fabric running in an endless loop about a forming roll and a first press element;
- (B) a press section for pressing a partially dewatered paper web formed from the nascent web, the press section comprising:
- (i) the 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;
- (C) a dewatering section comprising a hot air hood and a through air drying (TAD) drum, through which passes the partially dewatered paper web travelling on the structuring belt;
- and
- (D) 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.
14 more elements
A method for making paper comprising:
- (A) forming a nascent paper web by depositing a paper slurry from a headbox into a gap former of a wet section of a papermaking machine, the gap former comprising:
- (i) a forming wire;
- and
- (ii) a dewatering fabric, the dewatering fabric running in an endless loop about a forming roll, a suction roll and a first press element;
- (B) forming a partially dewatered paper web by passing the nascent paper web through a first dewatering section of the papermaking machine comprising the suction roll and a first steam box;
- (C) pressing the partially dewatered paper web at a press section of the papermaking machine, the press section comprising:
- (i) the 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;
- (D) passing the partially dewatered paper web travelling on the structuring belt through a second dewatering section of the papermaking machine comprising a hot air hood and a through air drying (TAD) drum;
- (E) 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
- (F) creping the dried web off the steam heated cylinder.
15 more elements
A papermaking machine comprising:
- (A) a wet section for forming a nascent paper web, the wet section comprising a gap former into which is deposited a paper slurry from a headbox to form the nascent paper web, the gap former comprising:
- (i) a forming wire;
- and
- (ii) a dewatering fabric, the dewatering fabric running in an endless loop about a forming roll, a suction roll and a first press element;
- (B) a first dewatering section comprising the suction roll and a first steam box through which passes the nascent paper web to form a partially dewatered paper web;
- (C) a press section for pressing the partially dewatered paper web, the press section comprising:
- (i) the 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
- (D) a second dewatering section comprising a hot air hood and a through air drying (TAD) drum, through which passes the partially dewatered paper web travelling on the structuring belt.
9 more elements
A papermaking machine comprising:
- (A) a wet section for forming a nascent paper web, the wet section comprising a gap former into which is deposited a paper slurry from a headbox to form the nascent paper web, the gap former comprising:
- (i) a forming wire;
- and
- (ii) a dewatering fabric, the dewatering fabric running in an endless loop about a forming roll and a first press element;
- (B) a press section for pressing a partially dewatered paper web formed from the nascent web, the press section comprising:
- (i) the 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
- (C) a dewatering section comprising a hot air hood and a through air drying (TAD) drum, through which passes the partially dewatered paper web travelling on the structuring belt.
8 more elements
A method for making paper comprising:
- (A) forming a nascent paper web by depositing a paper slurry from a headbox into a gap former of a wet section of a papermaking machine, the gap former comprising:
- (i) a forming wire;
- and
- (ii) a dewatering fabric, the dewatering fabric running in an endless loop about a forming roll, a suction roll and a first press element;
- (B) forming a partially dewatered paper web by passing the nascent paper web through a first dewatering section of the papermaking machine comprising the suction roll and a first steam box;
- (C) pressing the partially dewatered paper web at a press section of the papermaking machine, the press section comprising:
- (i) the 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
- (D) passing the partially dewatered paper web travelling on the structuring belt through a second dewatering section of the papermaking machine comprising a hot air hood and a through air drying (TAD) drum.
9 more elements
Dependencies are inferred from the claim text.