A fabric is treated by applying a nanoparticle type coating to improve their resistance to contamination by foreign matter. The coating is applied during fabric manufacture and cured during heat setting. Alternatively, the coating applied or renewed by utilizing an existing shower or locating a spray boom or other suitable coating application device to apply the coating to the fabric in a controlled, uniform manner. Prior to application of the coating, the fabric is first thoroughly cleaned such as by showering or spraying, and then dried. Following controlled application of the coating, any excess material is removed by a suitable means, such as by vacuum, and the remaining coating on the fabric is then cured, either by utilizing the ambient heat of the equipment or by a portable bank of heaters. In this manner, the fabric does not have to be removed from the machine in order to apply or renew the contaminant resistant coating.

A lubricating device lubricates a circulating clothing of a machine for manufacturing a fibrous web. The device has a body with a feed chamber that has an inlet for supplying a pressurized liquid lubricant to the feed chamber and an outlet for discharging the lubricant therefrom. The body further has a nozzle chamber to which a nozzle for discharging the lubricant is connected. The nozzle has a flow-conducting connection to the feed chamber via the nozzle chamber and the outlet. Within the body, a diffuser is provided for diffusing the lubricant supplied through the outlet along the body, the diffuser being arranged between the outlet and the nozzle.

[TASK] Provided is a method of spraying a chemical solution, the method being capable of efficiently applying a chemical solution to a traveling canvas and sufficiently preventing the adhesion of paper powder and pitch to the canvas. [MEANS OF SOLVING THE PROBLEM] The present invention provides a method of spraying a chemical solution Y, the method comprising spraying the chemical solution Y continuously on a canvas K used in a dry part D of a paper machine by a spraying apparatus 10 while making the canvas K travel, wherein the canvas K is guided to an inside roll IR and an outside roll OR, and wherein the spraying apparatus 10 is disposed upstream from the outside roll OR and between the inside roll IR and the outside roll OR, and the chemical solution Y is sprayed toward the outside roll OR along a travel direction Y2 of the canvas K.

[TASK] Provided is a method of spraying a chemical solution, the method being capable of efficiently applying a chemical solution to a traveling canvas and sufficiently preventing the adhesion of paper powder and pitch to the canvas. [MEANS OF SOLVING THE PROBLEM] The present invention provides a method of spraying a chemical solution Y, the method comprising spraying the chemical solution Y continuously on a canvas K used in a dry part D of a paper machine by a spraying apparatus 10 while making the canvas K travel, wherein the canvas K is guided to an inside roll IR and an outside roll OR, and wherein the spraying apparatus 10 is disposed upstream from the outside roll OR and between the inside roll IR and the outside roll OR, and the chemical solution Y is sprayed toward the outside roll OR along a travel direction Y2 of the canvas K.

[Problem] To provide a method for spraying a chemical solution that makes it possible to uniformly apply a chemical solution onto a moving body and that exhibits excellent spraying efficiency. [Solution] The present invention is directed to a method for spraying a chemical solution in which, in a dry part D of a paper-making machine, a chemical solution is continuously sprayed onto a moving body that guides wet paper X, while a nozzle device S is reciprocating in directions orthogonal to a moving direction of the moving body with the moving body in motion, wherein: the moving body is a cylindrical dryer roller D1 or an endless canvas K1; and a travel distance H that the nozzle device S moves during a single rotation of the moving body and a width W of a sprayed area that is formed on the moving body by the nozzle device S satisfy the relationship represented by the following expression: 0.5H/W20.

[Problem] To provide a method for spraying a chemical solution that makes it possible to uniformly apply a chemical solution onto a moving body and that exhibits excellent spraying efficiency. [Solution] The present invention is directed to a method for spraying a chemical solution in which, in a dry part D of a paper-making machine, a chemical solution is continuously sprayed onto a moving body that guides wet paper X, while a nozzle device S is reciprocating in directions orthogonal to a moving direction of the moving body with the moving body in motion, wherein: the moving body is a cylindrical dryer roller D1 or an endless canvas K1; and a travel distance H that the nozzle device S moves during a single rotation of the moving body and a width W of a sprayed area that is formed on the moving body by the nozzle device S satisfy the relationship represented by the following expression: 0.5H/W20.

A method of controlling deposits on papermaking surfaces or fabrics on paper machines includes applying a deposition control solution to the papermaking surfaces or fabrics to inhibit deposition of organic contaminants therein. The deposition control solution comprises at least one cationic polymer, at least one at least one phthalate/glycol or polyethylene terephthalate/polyoxyethylene terephthalate (PET:POET) or polyalkylene terephthalate/polyoxyethylene terephthalate (PAT:POET) based copolymer, and at least one non-ionic surfactant in combination to provide improved deposition control.

A fabric is treated by applying a nanoparticle type coating to improve their resistance to contamination by foreign matter. The coating is applied during fabric manufacture and cured during heat setting. Alternatively, the coating applied or renewed by utilizing an existing shower or locating a spray boom or other suitable coating application device to apply the coating to the fabric in a controlled, uniform manner. Prior to application of the coating, the fabric is first thoroughly cleaned such as by showering or spraying, and then dried. Following controlled application of the coating, any excess material is removed by a suitable means, such as by vacuum, and the remaining coating on the fabric is then cured, either by utilizing the ambient heat of the equipment or by a portable bank of heaters. In this manner, the fabric does not have to be removed from the machine in order to apply or renew the contaminant resistant coating.

[TASK] Provided is a method of spraying a chemical solution, the method being capable of efficiently applying a chemical solution to a traveling canvas and sufficiently preventing the adhesion of paper powder and pitch to the canvas.

[MEANS OF SOLVING THE PROBLEM] The present invention provides a method of spraying a chemical solution Y, the method comprising spraying the chemical solution Y continuously on a canvas K used in a dry part D of a paper machine by a spraying apparatus 10 while making the canvas K travel, wherein the canvas K is guided to an inside roll IR and an outside roll OR, and wherein the spraying apparatus 10 is disposed upstream from the outside roll OR and between the inside roll IR and the outside roll OR, and the chemical solution Y is sprayed toward the outside roll OR along a travel direction Y2 of the canvas K.

A papermaking fabric is treated by applying a nanoparticle type coating to improve their resistance to contamination by foreign matter in the papermaking system. The coating is applied during fabric manufacture and cured during heat setting. Alternatively, the coating applied or renewed by utilizing an existing shower or locating a spray boom or other suitable coating application device in the dryer section to apply the coating to the fabric in a controlled, uniform manner. Prior to application of the coating, the fabric is first thoroughly cleaned such as by showering or spraying, and then dried. Following controlled application of the coating, any excess material is removed by a suitable means, such as by vacuum, and the remaining coating on the fabric is then cured, either by utilizing the ambient heat of the dryer section or by a portable bank of heaters. In this manner, the fabric does not have to be removed from the machine in order to apply or renew the contaminant resistant coating.