Abstract: An industrial textile has a double warp. Yarns (111, 112) of a first warp and yarns (131, 132, 133, 134) of a weft are bonded to each other according to a first predetermined pattern, and yarns (121, 122) of a second warp and the yarns (131, 132, 133, 134) of the weft are bonded to each other according to a second predetermined pattern. The first predetermined pattern and the second predetermined pattern form a textile structure, which includes the yarns (131, 132) of the weft on a first level (L1) and the yarns (133, 134) of the weft on a second level (L2). The yarns of the weft having smaller diameter are configured to alternate with yarns of the weft having a larger diameter on the first level (L1).

Abstract: A plurality of studs mount a doctor blade holder to a doctor back in a fiber web machine for slidable extraction of the doctor blade holder in the cross machine direction. Each stud (15) has a body (16) with a cylindrical center segment with a protruding nonround flange (17) formed as a single piece with the center segment. Opposed flats of the nonround flange of the body (16) may be engaged by the opposed parallel jaws of a conventional wrench allowing ready attachment of the studs to the doctor blade holder and subsequent installing within the channel of a rail which is mounted to the doctor back. A slide bar may be fixed to the doctor blade holder to extend out of the rail for engagement and extraction of the doctor blade holder.

Abstract: A press felt for use in paper, cardboard or tissue machines has at least one base fabric (110), and fiber layers (120, 121) attached to the base fabric (110). The press felt fiber layers (120, 121) include thermoplastic elastomer fibers of thermoplastic elastomer originating from bio-based raw material and/or carbon-dioxide based raw material.

Abstract: A pressure screen for use in a fiber web product process (10) has an inlet zone (12), a basket having an accept zone (14) and a reject zone (20). The pressure screen (10) has a housing (28) inside which a rotor (27) is located. The reject zone (20) of the pressure screen (10) has a cover (22) forming a rejects chamber (21) for the reject zone (20). The cover (22) of the rejects chamber (21) of the screen (10) is removable by a reopenable attachment means (25, 29) attached to the housing (28) of the screen (10).

Abstract: The refining of a fibrous pulp is monitored and controlled by capturing at least one image of a pulp sample, determining the amount of all fibers or non-fibrillated fibers in the at least one image, determining the amount of fibrillated fibers in the at least one image, determining the relation between fibrillated fibers and all fibers or non-fibrillated fibers in the pulp on the basis of the amount of fibrillated fibers and the amount of all fibers or non-fibrillated fibers in the at least one image, generating a control parameter on the basis of the determined relation between fibrillated fibers and all fibers or non-fibrillated fibers in the pulp, and controlling fiber refining by at least one pulp refining device on the basis of the control parameter.

Abstract: According to an example aspect of the present invention, there is provided a yarn (100) comprising: a plurality of monofilaments (101 102, 103, 104) twisted together, and a multifilament or a spun yarn (105) wound around the plurality of monofilaments (101, 102, 103, 104), wherein the multifilament or the spun yarn (105) comprises a bio-based material, a recycled bio-based material or a recycled synthetic material.

Abstract: 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.

Abstract: An industrial textile has two layers, a web-side layer and a wear-side layer. The web-side layer has machine direction yarns (1) and binding cross-machine direction yarns (5). The wear-side layer has machine direction yarns (3) and cross-machine direction yarns (4). The binding cross-machine direction yarns (5) extend from the web-side layer to the wear-side layer and bind a portion of the wear-side layer machine direction yarns (3) to bond the web-side layer and the wear-side layer together, and wherein the web-side layer is a non-plain weave.

Abstract: An industrial textile has a double warp. Yarns (111, 112) of a first warp and yarns (131, 132, 133, 134) of a weft are bonded to each other according to a first predetermined pattern, and yarns (121, 122) of a second warp and the yarns (131, 132, 133, 134) of the weft are bonded to each other according to a second predetermined pattern. The first predetermined pattern and the second predetermined pattern form a textile structure, which includes the yarns (131, 132) of the weft on a first level (L1) and the yarns (133, 134) of the weft on a second level (L2). The yarns of the weft having smaller diameter are configured to alternate with yarns of the weft having a larger diameter on the first level (L1).

Abstract: A press felt for use in paper, cardboard or tissue machines has at least one base fabric (110), and fiber layers (120, 121) attached to the base fabric (110). The press felt fiber layers (120, 121) include thermoplastic elastomer fibers of thermoplastic elastomer originating from bio-based raw material and/or carbon-dioxide based raw material.

Abstract: A monofilament yarn (10) has a polygon cross-section having a width and a height, which width is greater than the height, and four corners (11, 12, 13, 14) of which the first two opposite corners (11, 13) have angles of over 90 degrees, and the second two opposite corners (12, 14) have angles under 90 degrees, said width being 0.1 to 3 mm. The rounded first two opposite corners have a radius of 0.1 to 0.15 mm, and the rounded second two opposite corners have a radius of 0.075 to 0.1 mm. The yarn may be used to fabricate an industrial textile, which may be a papermaking fabric such as a dryer fabric or a forming fabric, or a filter fabric, such as a disc filter, a horizontal vacuum belt filter, a belt filter press, a twin wire press, a drum filter, a pan filter, a gravity table or a filter press.

Abstract: At least one infrared element arrangement having at least one infrared element (3) comprising a plurality of infrared radiators (4) is mounted on a frame moveable with respect to a synthetic filter fabric mounted to a filtering surface. The frame may have wheels or the like such that the infrared radiators may be moved along the length of the filtering surface to heat the synthetic filter fabric (6) to a temperature of 100 to 160° C. for shrinking the fabric (6) on the filtering surface (5).

Abstract: A method for forming a multi-ply fiber web in which least part of the sizing of the multi-ply fiber web is provided by applying sizing agent in the form of foam by a curtain type application device (C10, C20) in between at least two layers of the multi-ply fiber web in the forming section. The invention also relates to a forming section for a multi-ply fiber web having at least one twin-wire forming part formed between a wire (10) for the bottom layer and a wire (20) for the top layer of the multi-ply fiber web, where the layers are joined, and the treated layers combined. The forming section has a curtain type application device (C10, C20) for applying sizing agent in the form of foam in between two layers of the multi-ply fiber web in the forming section of a multi-ply fiber web production line.

Abstract: 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.

Abstract: A blade segment (4, 8, 8a, 8b) for a refiner comprises an inner end edge (20) and an outer end edge (21) and a first side edge (22) and a second side edge (23) opposite to the first side edge (22), the first side edge (22) and the second side edge (23) extending between the inner end edge (20) and the outer end edge (21), and a refining surface (29) comprising blade bars (27) and blade grooves (28) therebetween on a front surface (25) of the blade segment (4, 8, 8a, 8b). At least one side edge (22, 23) of the blade segment (4, 8, 8a, 8b) comprises at least one opening (14a, 14b, 14c, 14d, 14e, 14f, 14g) that extends from the side edge (22, 23) toward the opposite side edge (22, 23).

Abstract: A disc chipper has thick double-edged chipper blades clamped in rectangular pockets between a knife segment and a knife clamp which are connected to a chipper disc. The blades are precisely positioned for cutting by knife stops selected from a set of knife stops of incremental modular widths. A different width knife stop is used to position the chipper knife blades each time it is sharpened. After each sharpening the knife blade has a selected width which is smaller by a constant incremental value, and it is assembled with a mating knife stop from the set so that the blade edge position remains unchanged.

Abstract: To minimize the cost of a fiber web due to the web, particularly a board web, being manufactured overly thick to compensate for loss of caliper in the reel-up, the web is made thicker just for the inner layers of what will become a parent roll. The caliper of the web is measured as or after it is unwound. A caliper curve of the parent roll as a function of the diameter of the parent roll is calculated as a function of the diameter of the parent roll and/or the customer roll. The fiber web is adjusted by changing running parameters of the production line: web speed i.e. production speed, headbox-flow, head-box consistency, coating weight of the coating paste or calender nip load.

Abstract: A blade element (1) for a refiner for refining fibrous material comprises a refining surface (3) provided with blade bars (8, 10) and blade grooves (9, 11) there-between. The blade bars (8, 10) have side walls (8?, 8??) facing away from one another. The side walls (8?, 8??) of the at least one blade bar (8) comprise on both of its side walls (8?, 8??) steps (14?, 14??) which extend at least partly in the transversal direction relative to the side walls (8?, 8??) of the blade bar (8) and away from one another.

Abstract: The present invention relates to a roll for use in a manufacture of a fibrous web comprising cellulosic fibers. The roll comprises a roll body with a cylindrical surface, and a roll cover, which is arranged to cover the cylindrical surface of the roll body. The cover comprises a functional layer, which comprises a polymer matrix and filler particles embedded in the polymer matrix. The filler particles comprise hollow spherical particles of aluminium oxide, titanium oxide, zirconium oxide and/or silicon carbide, which hollow particles have a particle size of ?200 ?m.

Abstract: A disc chipper has thick double-edged chipper blades clamped in rectangular pockets between a knife segment and a knife clamp which are connected to a chipper disc. The blades are precisely positioned for cutting by knife stops selected from a set of knife stops of incremental modular widths. A different width knife stop is used to position the chipper knife blades each time it is sharpened. After each sharpening the knife blade has a selected width which is smaller by a constant incremental value, and it is assembled with a mating knife stop from the set so that the blade edge position remains unchanged.