A system and method of cleaning an imprinting fabric used to make bath tissue, paper towel, or facial tissue, in which the imprinting fabric is washed with water from high pressure impact showers and flooding showers, and water remaining on the imprinting fabric after the step of washing is removed with a vacuum roll on a sheet side of the imprinting fabric. The system and method does not involve removing water from the fabric with a uhle box on the sheet side of the imprinting fabric.

A chemical solution spraying method for spraying a chemical solution onto canvas K1 has a loop shape in a side view while reciprocating nozzle device S along rail L extending in a width direction of canvas K1 with respect to canvas K1, in which time period Tc during which canvas K1 is in contact with wet paper X is 0.03 seconds or more, time period Tn required for nozzle device S to one-way move is 0.2 to 20 minutes, traveling speed Vp of canvas K1 is 500 m/min or more, length K of canvas K1 is 20 to 80 m, a number of times of contact N of any point on a surface of canvas K1 with wet paper X during time period Tn, time period Tn, traveling speed Vp, and length K satisfy a relationship of N=(Tn.Math.Vp)/K, under predetermined conditions.

A chemical solution spraying method for spraying a chemical solution onto canvas K1 has a loop shape in a side view while reciprocating nozzle device S along rail L extending in a width direction of canvas K1 with respect to canvas K1, in which time period Tc during which canvas K1 is in contact with wet paper X is 0.03 seconds or more, time period Tn required for nozzle device S to one-way move is 0.2 to 20 minutes, traveling speed Vp of canvas K1 is 500 m/min or more, length K of canvas K1 is 20 to 80 m, a number of times of contact N of any point on a surface of canvas K1 with wet paper X during time period Tn, time period Tn, traveling speed Vp, and length K satisfy a relationship of N=(Tn.Math.Vp)/K, under predetermined conditions.

A chemical solution spraying method for spraying a chemical solution onto a canvas K1 has a loop shape in a side view while reciprocating two nozzle devices S at the same speed along rail L extending in a width direction of canvas K1 with respect to canvas K1, in which time period Tc during which canvas K1 is in contact with wet paper X is 0.03 seconds or more, time period Tn required for nozzle devices S to each one-way move is 0.5 to 10 minutes, traveling speed Vp of canvas K1 is 500 m/min or more, length K of canvas K1 is 20 to 80 m, a number of times of contact N of any point on a surface of canvas K1 with wet paper X during time period Tn, time period Tn, traveling speed Vp, and length K satisfy a relationship of N=(Tn.Math.Vp)/K, under predetermined conditions.

A method of cleaning or conditioning a paper-making press felt or other substrate is described. The method includes treating the paper-making press felt or other substrate with a formulation that contains at least solketal.

Compositions for cleaning equipment, preferably paper or carpet making equipment, and methods of cleaning equipment, preferably paper or carpet making equipment using the said composition. The cleaning composition comprises of one or more fatty acid methyl esters, preferably vegetable oil methyl ester, more preferably soybean oil methyl ester, one or more alkene carbonate, preferably propylene carbonate; one of more surfactants, preferably nonionic surfactants; and one or more glycol ether and/or dibasic ester containing solvents.

Compositions for cleaning equipment, preferably paper or carpet making equipment, and methods of cleaning equipment, preferably paper or carpet making equipment using the said composition. The cleaning composition comprises of one or more fatty acid methyl esters, preferably vegetable oil methyl ester, more preferably soybean oil methyl ester, one or more alkene carbonate, preferably propylene carbonate; one of more surfactants, preferably nonionic surfactants; and one or more glycol ether and/or dibasic ester containing solvents.

A cleaning apparatus includes a cleaning roller configured to rotate about a first rotation axis to clean a component to which paper dust is attached, the cleaning roller having a first area and a second area that is adjacent to the first area in a direction along the first rotation axis and to which more paper dust is attached than to the first area, and a remover configured to rotate about a second rotation axis extending in a direction different from the first rotation axis and configured to come in contact with at least a portion of the second area to remove the paper dust from the second area.

A cleaning apparatus includes a cleaning roller configured to rotate about a first rotation axis to clean a component to which paper dust is attached, the cleaning roller having a first area and a second area that is adjacent to the first area in a direction along the first rotation axis and to which more paper dust is attached than to the first area, and a remover configured to rotate about a second rotation axis extending in a direction different from the first rotation axis and configured to come in contact with at least a portion of the second area to remove the paper dust from the second area.

A machine for dewatering and drying a paper, cardboard or other fibrous web, to which machine a fibrous stock suspension is fed which is formed at least partially from waste paper. The machine includes at least two press nips which are formed in each case by two press rolls, wherein a fibrous web runs through first press nip with a water absorbing dewatering belt on both sides. The fibrous web then runs through a second press nip with at least one other dewatering belt and a smooth impermeable transfer belt on both sides. A transfer belt transfers the fibrous web after second press nip to a belt in a downstream machine unit, e.g. dryer group. The dryer group allows the fibrous web to be guided in a serpentine manner alternatively over heated dryer cylinders and vacuum equipped guide rolls.