Abstract: The invention concerns a doctor blade of a fiber web machine, where the doctor blade is of a composite structure comprising a fiber material as reinforcement, and a binder. The reinforcement in the composite structure is essentially composed of a fiber material which is free from carbon fiber and the composite structure comprises particulate carbon in order to improve the thermal conductivity of the doctor blade.

Abstract: A doctor unit in a paper machine includes a blade carrier having a blade holder fitted to the blade carrier. A doctor blade is mountable in the blade holder to doctor a roll or similar moving surface. The blade holder and/or doctor blade include one or more sensors installed inside the construction or on its surface. The sensors are arranged to measure the wear of and/or stress in the blade holder and/or doctor blade.

Abstract: Doctor blades are stored and used in a paper/board mill in which the quantity of the doctor blades used is monitored, and information is transmitted by data transfer means (20) to a data management system (23, 24) of the manufacturer/supplier of the doctor blades to manage the doctor blade situation. In the method, the information about the doctor blades is received by data collection means (22) connected to the data management system. The information is processed in the data management system (23, 24). When needed, a doctor blade/doctor blades is/are delivered to the paper/board mill to keep the quantity of doctor blades as desired. The system has data transfer means (20) for transmitting the quantity of the doctor blades to a data management system (23, 24) of a supplier/manufacturer. A means may be provided for giving the alarm to deliver, when needed, new doctor blades to the paper/board mill.

Abstract: The invention relates to an apparatus comprising a holder (2) for a doctor blade and a blade (1) to be fitted in the holder for use in a paper or board machine. The holder (2) and/or the blade (1) comprises a composite material of whose surface or on a part of whose surface a ceramic coating (6) has been made.

Abstract: A reeling device (10), has a support base (1), a support arm (2), and a shaft (9′) mounted on the support arm (2). One shaft end has a boss (9) and the other end has a revolving frame (7). Mounted to the device is a transit case (20), within which the used doctor blades (12) of a paper/cardboard machine are reeled on a roll. Raw material is supplied to a blade production plant, where the blades are produced, then transported to a paper/cardboard plant and stored in the plant prior to being mounted in connection with paper/cardboard machine rolls, where their condition is monitored during use. Used doctor blades are removed from the machine, packed in storable form with the reeling device, and are stored in the paper/cardboard plant. The packed used blades are transported away from the paper/cardboard plant and delivered into recycling, reuse or end use.

Abstract: The invention relates to band-like doctor blade assembly, a doctor blade and a method in the use of the doctor blade. The doctor blade assembly includes continuous and substantially infinite doctor blade that is placed in a reel, the doctor blade is then fed into a blade holder. The blade holder includes locking devices in its connection for locking the doctor blade in the blade holder. The continuous and substantially infinite doctor blade has a plurality of edge notches formed along an edge thereof and the doctor blade is fed over a length substantially equal to the distance between the edge notches, while the notches are placed, during the operation of the doctor blade, at both ends of the blade holder and permit bending of the continuous band-like doctor blade.

Abstract: A beam structure (10) made of a composite for a pulp machine/paper machine/board machine or for a paper/board finishing device. The beam (10, 10a1, 10a2) is formed of a first curved part (12) and of a second straight part (13) joined thereto, to which second straight part (13) a doctoring, coating or measurement apparatus (110) is attached.

Abstract: Arrangement and method for handling doctor blades of a paper/board machine which are placed against a face of a roll in the paper/board machine to keep the face clean and to service the face. A doctor blade blank is formed from a doctor blade roll, i.e., from a reel of doctor blade material, by unwinding the roll of doctor blade material and cutting the doctor blade material at a determined cut-off point to thereby obtain a doctor blade blank having a desired pullout or blade length and which will be modified to form a doctor blade.