A method of creping a web including supporting the web on a drum and rotating the drum to move a first length of the web proximate to a creping blade such that the creping blade removes the first length from the drum. The creping blade has first and second sections made of a base material. The base material has a first coefficient of friction at the first section and is processed to produce a second coefficient of friction at the second section greater than the first coefficient of friction. The method includes moving the first length along the first section, removing a second length of the web from the drum with the creping blade, moving the first length along the second section, forming the second length into at least one microfold as the first length contacts the second section, and forming the second length into at least one macrofold.

An apparatus and a method for applying a liquid active substance onto surfaces moving in a circulating manner, including a metering unit with a pipe system and an application unit. The active substance is conducted to the application unit by the metering unit, and the application unit has a pad with an open-pore mesh structure for receiving and storing the active substance and for applying the active substance onto a moving surface as a film as a function of the degree of saturation and the contact pressure of the pad on the moving surface. Brackets fix the pad in a working position when pushed together and are capable of being pulled apart to exchange the pad. Also, the use of the apparatus for keeping the moving surfaces free from deposits, accumulations or contaminants.

A planar element is disclosed for use in a papermaking system. The planar element is suitable for use as a doctor blade or a top plate and includes a three-dimensional composite structure including elongated elements extending in at least three orthogonal directions, and a resin in which the three-dimensional composite structure is embedded.

An apparatus and a method for applying a liquid active substance to surfaces moving in a circulating manner, such as of cylinders, rolls, fabrics or other moving webs, consisting of a metering unit and an application unit. The active substance is conducted to the application unit by the metering unit, and the application unit has a pad with an open-pore mesh structure for receiving and storing the active substance and for applying the active substance as a film as a function of the degree of saturation and the contact pressure of the pad on the moving surface. Also, the use of the apparatus for keeping moving surfaces free from deposits, accumulations or contaminants.

An apparatus and a method for applying a liquid active substance to surfaces moving in a circulating manner, such as of cylinders, rolls, fabrics or other moving webs, consisting of a metering unit and an application unit. The active substance is conducted to the application unit by the metering unit, and the application unit has a pad with an open-pore mesh structure for receiving and storing the active substance and for applying the active substance as a film as a function of the degree of saturation and the contact pressure of the pad on the moving surface. Also, the use of the apparatus for keeping moving surfaces free from deposits, accumulations or contaminants.

A fiber reinforced composite material containing a polymeric resin matrix reinforced by fabrics consisting of co-mingled glass/carbon yarns for a doctor blade.

A papermaking machine includes a Yankee dryer, a doctor, and a doctor blade loading control system. The doctor blade loading control system includes a first doctor loading cylinder coupled to the doctor and configured to selectively apply a loading force to the doctor, a second doctor loading cylinder coupled to the doctor and configured to selectively apply a loading force to the doctor, a first air line in communication with the first doctor loading cylinder, a second air line in communication with the second doctor loading cylinder, a first electronic pressure controller configured to control a loading pressure of the first doctor loading cylinder on the doctor based on a first loading pressure setpoint, and a second electronic pressure controller configured to control a loading pressure of the second doctor loading cylinder on the doctor based on a second loading pressure setpoint.

A doctor apparatus for a web forming machine to doctor a moving surface, and the doctor apparatus (10) includes a doctor blade (16) and blade holder (11), which blade holder (11) has a holder component (14) preferably made of aluminum, to which the doctor blade (16) is mounted by a front plate (15), and a frame component (12) preferably made of fiber-reinforced polymer material, to which the holder component (14) is mounted. The doctor apparatus (10) having a loading element (22) arranged between the frame component (12) and holder component (14) to load the blade holder (11) and further the doctor blade (16). The invention also relates to a corresponding blade holder and holder component.

A doctor apparatus for a web forming machine to doctor a moving surface, and the doctor apparatus (10) includes a doctor blade (16) and blade holder (11), which blade holder (11) has a holder component (14) preferably made of aluminum, to which the doctor blade (16) is mounted by a front plate (15), and a frame component (12) preferably made of fiber-reinforced polymer material, to which the holder component (14) is mounted. The doctor apparatus (10) having a loading element (22) arranged between the frame component (12) and holder component (14) to load the blade holder (11) and further the doctor blade (16). The invention also relates to a corresponding blade holder and holder component.

A sensor signal is generated from a plurality of sensors located on a sensing roll, wherein each signal is generated when each sensor enters a nip between the sensing roll and a mating roll during each rotation of the sensing roll. An oscillating component such as a doctor blade or cleaning shower affects a web of material upstream from the nip. Each sensor generates a sensor signal upon entering the nip. A periodically occurring starting reference is generated that is associated with each oscillation of the oscillating component and the signal generated by each sensor is received so that a particular one of the sensors which generated the signal is determined and one of a plurality of tracking segments associated with the oscillating component is identified. The signal is stored to associate the sensor signal with the identified one tracking segment.