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.

Blowing equipment (10) for doctor equipment of a fiber web machine (10) includes a distribution channel (11), the length of which corresponds essentially to the length of the doctor equipment (40). The blowing equipment (10) also includes nozzle devices (12) for directing blowing in the doctor equipment (40). The nozzle devices (12) are arranged to be adapted to a blade holder (13) that belongs to the doctor equipment (40) for establishing doctor blowing. The distribution channel (11) is adapted to be fastened to the blade holder (13). The invention also relates to doctor equipment of a fiber web machine, where the doctor equipment is equipped with blowing equipment.

A blade for creping a paper web from a Yankee cylinder surface is made of a steel substrate having a thickness of 0.7 mm-2 mm. The steel substrate is covered by a cermet coating that forms a working edge adapted for contact with the surface and a web impact area upon which the web impacts during creping. The cermet coating includes chromium carbides and tungsten carbides in a nickel based metal matrix. The cermet coating has a porosity of <2 volume % and a hardness of >1100 HV.sub.0.3.

Tissue paper containing a softener and having a dry tensile strength of 250 cN/25 mm or greater and 400 cN/25 mm or less in a longitudinal direction, a tensile elasticity of 7 N/mm.sup.2 or higher and 15 N/mm.sup.2 or lower, and a hand-feel value HF of 80 or higher, where the hand-feel value is measured using a softness analyzer (TSA), is provided.

Tissue paper containing a softener and having a dry tensile strength of 250 cN/25 mm or greater and 400 cN/25 mm or less in a longitudinal direction, a tensile elasticity of 7 N/mm.sup.2 or higher and 15 N/mm.sup.2 or lower, and a hand-feel value HF of 80 or higher, where the hand-feel value is measured using a softness analyzer (TSA), is provided.

A self-compensating tube assembly is disclosed for use in a doctor blade holder. The self-compensating tube assembly includes a tube including a membrane that encloses a liquid with a substantially invariable bulk modulus of elasticity, density and viscosity; and chatter responsive for providing any of monitoring means of blade chatter through pressure, damping of blade chatter, and minimizing blade chatter.

A self-compensating tube assembly is disclosed for use in a doctor blade holder. The self-compensating tube assembly includes a tube including a membrane that encloses a liquid with a substantially invariable bulk modulus of elasticity, density and viscosity; and chatter responsive for providing any of monitoring means of blade chatter through pressure, damping of blade chatter, and minimizing blade chatter.

The disclosure is directed to techniques for tracking data associated with a creping process. The techniques include measuring process data, wherein the process data includes vibration data, and wherein measuring process data includes measuring vibration data of a creping blade using one or more vibration sensors. The techniques further include assigning a score for the process data, including assigning a vibration score for the vibration data. The techniques also include generating an index score based on the score for the process data and the vibration score for the vibration data.

Blowing equipment (10) for doctor equipment of a fiber web machine (10) includes a distribution channel (11), the length of which corresponds essentially to the length of the doctor equipment (40). The blowing equipment (10) also includes nozzle devices (12) for directing blowing in the doctor equipment (40). The nozzle devices (12) are arranged to be adapted to a blade holder (13) that belongs to the doctor equipment (40) for establishing doctor blowing. The distribution channel (11) is adapted to be fastened to the blade holder (13). The invention also relates to doctor equipment of a fiber web machine, where the doctor equipment is equipped with blowing equipment.

A self-compensating tube assembly is disclosed for use in a doctor blade holder. The self-compensating tube assembly includes a tube including a membrane that encloses a liquid with a substantially invariable bulk modulus of elasticity, density and viscosity; and chatter responsive for providing any of monitoring means of blade chatter through pressure, damping of blade chatter, and minimizing blade chatter.