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US 12,246,510 B2Granted
Single facer with heating plates for producing corrugated board
AssigneeFosber S.p.A.
InventorMauro Adami
Life of this patent
Estimating the term…
Abstract
The single facer includes a first feed path for feeding a first paper web towards a corrugating nip defined between a first corrugating roller and a second corrugating roller. The single facer also includes a second feed path for feeding a second paper web towards a pressure nip defined between the first corrugating roller and a pressure member co-acting with the first corrugating roller. A respective heating system is provided along each feed path. Each heating system includes at least a pair of heating plates.
Claims25
A single facer comprising:
- a bearing structure;
- a first feed path for feeding a first paper web towards a corrugating nip formed between a first corrugating roller and a second corrugating roller;
- a first heating system provided along the first feed path and adapted to heat the first paper web upstream of the corrugating nip;
- a second feed path for feeding a second paper web towards a pressure nip formed between the first corrugating roller and a pressure member co-acting with the first corrugating roller;
- a second heating system provided along the second feed path and adapted to heat the second paper web upstream of the pressure nip;
- a glue dispenser co-acting with the first corrugating roller and adapted to apply glue to crests formed on the first web paper by the first corrugating roller and the second corrugating roller;
- wherein the first heating system comprises at least a first heating plate and a second heating plate, and the second heating system comprises at least a third heating plate and a fourth heating plate;
- and wherein each of said first heating plate, said second heating plate, said third heating plate and said fourth heating plate has an active surface adapted to be in contact with a respective paper web;
- and
- wherein each of said first heating plate, said second heating plate, said third heating plate and said fourth heating plate is hinged to the bearing structure, so as to rotate around a respective adjusting axis for adjusting an angular position of a respective heating plate of the first heating plate, the second heating plate, the third heating plate, and the fourth heating plate, and is associated with an actuation device for adjusting the angular position of the respective heating plate relative to the respective adjusting axis;
- and wherein a respective one of the first feed path and the second feed path where the respective heating plate is provided is so configured that a change in the angular position of the respective heating plate results in a change of an arc of contact between the active surface of the respective heating plate and the respective one of the first paper web and the second paper web.
8 more elements
A single facer comprising:
- a bearing structure;
- a first feed path for feeding a first paper web towards a corrugating nip formed between a first corrugating roller and a second corrugating roller;
- a first heating system provided along the first feed path and adapted to heat the first paper web upstream of the corrugating nip;
- a second feed path for feeding a second paper web towards a pressure nip formed between the first corrugating roller and a pressure member co-acting with the first corrugating roller;
- a second heating system provided along the second feed path and adapted to heat the second paper web upstream of the pressure nip;
- a glue dispenser co-acting with the first corrugating roller and adapted to apply glue to crests formed on the first web paper by the first corrugating roller and the second corrugating roller;
- wherein the first heating system comprises at least a first heating plate and a second heating plate, and the second heating system comprises at least a third heating plate and a fourth heating plate;
- and wherein each of said first heating plate, said second heating plate, said third heating plate and said fourth heating plate has an active surface adapted to be in contact with a respective paper web;
- and
- wherein the third heating plate and the fourth heating plate are hinged around a common axis and are provided with an angular movement around the common axis for modifying an arc of contact between the second paper web and the third heating plate and the fourth heating plate.
7 more elements
A single facer comprising:
- a bearing structure;
- a first feed path for feeding a first paper web towards a corrugating nip formed between a first corrugating roller and a second corrugating roller;
- a first heating system provided along the first feed path and adapted to heat the first paper web upstream of the corrugating nip;
- a second feed path for feeding a second paper web towards a pressure nip formed between the first corrugating roller and a pressure member co-acting with the first corrugating roller;
- a second heating system provided along the second feed path and adapted to heat the second paper web upstream of the pressure nip;
- a glue dispenser co-acting with the first corrugating roller and adapted to apply glue to crests formed on the first web paper by the first corrugating roller and the second corrugating roller;
- wherein the first heating system comprises at least a first heating plate and a second heating plate, and the second heating system comprises at least a third heating plate and a fourth heating plate;
- and wherein each of said first heating plate, said second heating plate, said third heating plate and said fourth heating plate has an active surface adapted to be in contact with a respective paper web;
- and
- wherein the active surface of each of said first heating plate, said second heating plate, said third heating plate, and said fourth heating plate has a convex cylindrical shape defined by a generatrix parallel to a respective adjusting axis of a circular cylindrical surface.
7 more elements
A single facer comprising:
- a bearing structure;
- a first feed path for feeding a first paper web towards a corrugating nip formed between a first corrugating roller and a second corrugating roller;
- a first heating system provided along the first feed path and adapted to heat the first paper web upstream of the corrugating nip;
- a second feed path for feeding a second paper web towards a pressure nip formed between the first corrugating roller and a pressure member co-acting with the first corrugating roller;
- a second heating system provided along the second feed path and adapted to heat the second paper web upstream of the pressure nip;
- a glue dispenser co-acting with the first corrugating roller and adapted to apply glue to crests formed on the first web paper by the first corrugating roller and the second corrugating roller;
- wherein the first heating system comprises at least a first heating plate and a second heating plate, and the second heating system comprises at least a third heating plate and a fourth heating plate;
- and wherein each of said first heating plate, said second heating plate, said third heating plate and said fourth heating plate has an active surface adapted to be in contact with a respective paper web;
- and
- wherein each of said first heating plate, said second heating plate, said third heating plate, and said fourth heating plate comprises at least an inner chamber for circulation of steam, and is arranged so as to collect condensate generated by steam cooling in a condensate accumulation area that is arranged so that the condensate collected does not reduce heat exchange through a respective active surface;
- wherein the concentrate accumulation area is adjacent to one end of the first heating plate, the second heating plate, the third heating plate, and/or the fourth heating plate.
8 more elements
A single facer comprising:
- a bearing structure;
- a first feed path for feeding a first paper web towards a corrugating nip formed between a first corrugating roller and a second corrugating roller;
- a first heating system provided along the first feed path and adapted to heat the first paper web upstream of the corrugating nip;
- a second feed path for feeding a second paper web towards a pressure nip formed between the first corrugating roller and a pressure member co-acting with the first corrugating roller;
- a second heating system provided along the second feed path and adapted to heat the second paper web upstream of the pressure nip;
- a glue dispenser co-acting with the first corrugating roller and adapted to apply glue to crests formed on the first web paper by the first corrugating roller and the second corrugating roller;
- wherein the first heating system comprises at least a first heating plate and a second heating plate, and the second heating system comprises at least a third heating plate and a fourth heating plate;
- and wherein each of said first heating plate, said second heating plate, said third heating plate and said fourth heating plate has an active surface adapted to be in contact with a respective paper web;
- and
- wherein along the first feed path a first liquid applying device is positioned, upstream of at least one of said first heating plate and said second heating plate;
- the liquid applying device being adapted to apply a liquid to a surface of the first paper web.
8 more elements
A single facer comprising:
- a bearing structure;
- a first feed path for feeding a first paper web towards a corrugating nip formed between a first corrugating roller and a second corrugating roller;
- a first heating system provided along the first feed path and adapted to heat the first paper web upstream of the corrugating nip;
- a second feed path for feeding a second paper web towards a pressure nip formed between the first corrugating roller and a pressure member co-acting with the first corrugating roller;
- a second heating system provided along the second feed path and adapted to heat the second paper web upstream of the pressure nip;
- a glue dispenser co-acting with the first corrugating roller and adapted to apply glue to crests formed on the first web paper by the first corrugating roller and the second corrugating roller;
- wherein the first heating system comprises at least a first heating plate and a second heating plate, and the second heating system comprises at least a third heating plate and a fourth heating plate;
- and wherein each of said first heating plate, said second heating plate, said third heating plate and said fourth heating plate has an active surface adapted to be in contact with a respective paper web;
- and
- wherein along the second feed path a second liquid applying device is provided, adapted to apply a liquid to a surface of the second paper web.
7 more elements
Dependencies are inferred from the claim text.