Various embodiments of the disclosure relate to a spreading unit, having a shaper, for spreading viscous material, in particular sealing material, on a component, wherein the shaper has a shaping contour for the forming of the viscous material in the course of the spreading. It is proposed that the shaping contour of the shaper for the forming of the viscous material is adjustable by actuator-based means.

A blade for creping a paper web from a dryer cylinder surface. The blade has a leading side and a front bevel surface to be impacted by the paper web. The leading side and the front bevel surface meet at a contact edge to contact the dryer cylinder. The front bevel surface has a 3D areal roughness, measured according to ISO 25178, of Sa>0.7 m and/or Sz>18 m and/or Sq>1.0 m.

A method for creping paper includes applying an adhesive composition to an outer surface of a creping cylinder (Yankee cylinder) to form an adhesive coating, contacting paper with the adhesive coating, removing the paper and adhesive coating from the creping cylinder, and determining a quality of the adhesive coating. Determining the quality of the adhesive coating may include measuring a degree of cross-linking of the adhesive polymer, a concentration of the adhesive polymer in the adhesive coating, a water content of the adhesive coating, an ash content of the adhesive coating, or combinations thereof. Determining the quality of the adhesive coating may also include determining a thickness of the adhesive coating by measuring light absorbed by the coating and calculating the thickness using Beer's Law. Systems and apparatuses for determining the quality of the adhesive coating and for creping paper are also disclosed.

A method for creping paper includes applying an adhesive composition to an outer surface of a creping cylinder (Yankee cylinder) to form an adhesive coating, contacting paper with the adhesive coating, removing the paper and adhesive coating from the creping cylinder, and determining a quality of the adhesive coating. Determining the quality of the adhesive coating may include measuring a degree of cross-linking of the adhesive polymer, a concentration of the adhesive polymer in the adhesive coating, a water content of the adhesive coating, an ash content of the adhesive coating, or combinations thereof. Determining the quality of the adhesive coating may also include determining a thickness of the adhesive coating by measuring light absorbed by the coating and calculating the thickness using Beer's Law. Systems and apparatuses for determining the quality of the adhesive coating and for creping paper are also disclosed.

A creping blade having a first side face, a second side face, and a shelf extending from the first side face to the second side face, with a scraping edge at the intersection of the first side face and the shelf. The shelf has a first section having a first coefficient of friction and a second section have a second coefficient of friction and the second coefficient of friction is greater than the first coefficient of friction.

The invention relates to a creping blade for the detachment of a travelling paper web from a dryer cylinder, said blade having a working edge to be placed against the cylinder, wherein the creping blade has a tensile strength of 1800-2500 N/mm.sup.2 and a hardness of 57-66 HRC in the hardened and tempered condition and wherein the blade is made from a steel, which comprises the following main components (in wt. %): C: 1.2-1.5; Si: 0.1-0.8; Mn: 0.1-0.7; Cr: 4.2-5.2; Mo: 3.0-4.0; V: 3.2-4.2; N: 0.01-0.15; balance Fe and impurities.

The invention below relates to a doctor blade device with an elongated doctor blade intended to operate continuously against a roll surface (2) and/or a cylinder surface (20) during scraping or wiping off material (IB) on the surface (20), which doctor blade device (5) comprises a carrier beam (10) adapted to the length of the roll surface or cylinder surface, which carrier beam has a clamping arrangement (4) for the positioning of a carrier part (3), arranged, in a groove in the longitudinal direction, to slidably carry the doctor blade (6), wherein the carrier part (3) comprises a carrier blade (30), a lip means (14) arranged at the carrier blade (30) and a spacer element (12) arranged between the lip means (14) and the carrier blade, wherein the carrier blade (30), the lip means (14), and the spacer element (12) are arranged, along a first long side edge of the carrier blade (30) between them, to form said groove (15) for slidable positioning in the longitudinal direction of the doctor blade (6) by support of the carrier blade (30), the lip (14), and the spacer element (12).

The invention below relates to a doctor blade device with an elongated doctor blade intended to operate continuously against a roll surface (2) and/or a cylinder surface (20) during scraping or wiping off material (IB) on the surface (20), which doctor blade device (5) comprises a carrier beam (10) adapted to the length of the roll surface or cylinder surface, which carrier beam has a clamping arrangement (4) for the positioning of a carrier part (3), arranged, in a groove in the longitudinal direction, to slidably carry the doctor blade (6), wherein the carrier part (3) comprises a carrier blade (30), a lip means (14) arranged at the carrier blade (30) and a spacer element (12) arranged between the lip means (14) and the carrier blade, wherein the carrier blade (30), the lip means (14), and the spacer element (12) are arranged, along a first long side edge of the carrier blade (30) between them, to form said groove (15) for slidable positioning in the longitudinal direction of the doctor blade (6) by support of the carrier blade (30), the lip (14), and the spacer element (12).

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.

The invention relates to a creping blade (1) with a blade-like main part (8) made of metal, in particular steel or stainless steel, said main part having a working edge (2) which can be placed against a drying cylinder (3) and which adjoins an end face (4) with a counter-edge (5). Grooves (6) are worked into the end face (4) and are arranged at a distance to one another, and a wear protection layer (7) is provided on the wall of the main part (9) between the working edge (2) and the main part (8), wherein the grooves (6) are worked at least into the wear protection layer (7).