Drying section, way of drying web from fibre material and machine with drying section

FIELD: heating system.

SUBSTANCE: druing unit has, at least, one nozzle for supplying the drying fluid to the web in such a way that the drying fluid with the excited vibrations is directed to the web, at least, one outlet device for moist air obtained during the convection drying, and a conveying means for moving the web relative to the drying unit. The drying unit has, at least, one ultrasonic generator that is located in the region of the nozzle to create oscillations of the drying fluid so that ultrasound can help to reduce the moisture content over the entire width of the web.

EFFECT: reduction of the moisture content in the web by means of convection drying.

16 cl, 7 dwg

 



 

Same patents:

FIELD: textiles, paper.

SUBSTANCE: invention relates to a method and device designed for recovery of excess heat coming from high-temperature dome into the drying section of the paper-making machine. According to the invention, this heat is supplied through the heat exchanger from the steam system, respectively, in excess steam and condensate.

EFFECT: improved method of heat recovery which is easier to adjust, increased utilisation of energy contained in the air exhausted from the dome.

15 cl, 2 dwg

Drying cloth // 2461673

FIELD: textiles, paper.

SUBSTANCE: cloth has a system of transverse fibers oriented transverse to the movement of tissue in a machine containing transverse fibers. The system of longitudinal fibers, oriented in the machine direction, which in turn contains the first and second subsystems of longitudinal fibers. The said first subsystem contains jaws containing at least two longitudinal threads, which have essentially similar rates of dimensions. The longitudinal threads of the second subsystem have greater rates of dimensions than the longitudinal threads of the first subsystem. The said at least two threads of the first subsystem are stacked vertically on oriented in the machine direction of the single longitudinal thread of the second subsystem. And the longitudinal threads of the said first and second subsystems are intertwined with the said transverse fibers of the said system of transverse fibers in the weave rapport, and the seam loops are formed only from the longitudinal fibers of the first subsystem.

EFFECT: drying cloth provides ease of its installation on the machine, while simultaneous strength and the necessary smoothness.

45 cl, 16 dwg

FIELD: textile, paper.

SUBSTANCE: fabric contains multiple warp threads woven with multiple weft threads to form pattern on surface that faces paper with alternating first and second pockets. The first and second pockets are limited by raised warp and weft threads formed by long overlaps in weaving pattern. The first pockets are larger in area compared to the second ones. Inside the first pocket, warp fabric has smooth weaving pattern. And the second pocket inside may be separated into halves by raised weft thread.

EFFECT: invention provides for high bulking and air permeability of fabric, which makes it possible to avoid microopenings on paper made with the help of this fabric.

9 cl, 8 dwg

FIELD: textile; paper.

SUBSTANCE: treatment may include pressing, drying, calendaring, chalking, glueing, cooling or printing. Device includes tape (2) turning around guiding element (3), at least one counter element (5) situated outside the said tape in order to have contact with tape. Tape (2) and counter element (5) form area of fabric treatment between each other to allow treated fabric passing through. Length of treatment area is set by means of position/adjustment of tape guiding element (3) and/or counter element design (5). Contacting pressure applied to treatment area with regard to type of treatment may be adjusted within 0.01 MPa to 200 MPa. Temperature of thermal roll and/or tape may be within -70°C to 400°C. Tape is 0.1 - 3 mm thick and tension strain is within 10 MPa to 500 MPa. In addition, invention relates to paper or cardboard roll drying by its compression in device from both sides.

EFFECT: possibility for fast switching over between different types of paper; profiled contacting area; integration of advantages from popular treatment methods; improvement of thermal treatment and expansion of hardware selection options.

75 cl, 23 dwg

FIELD: textile; paper.

SUBSTANCE: treatment may include pressing, drying, calendaring, chalking, glueing, cooling or printing. Device includes tape (2) turning around guiding element (3), at least one counter element (5) situated outside the said tape in order to have contact with tape. Tape (2) and counter element (5) form area of fabric treatment between each other to allow treated fabric passing through. Length of treatment area is set by means of position/adjustment of tape guiding element (3) and/or counter element design (5). Contacting pressure applied to treatment area with regard to type of treatment may be adjusted within 0.01 MPa to 200 MPa. Temperature of thermal roll and/or tape may be within -70°C to 400°C. Tape is 0.1 - 3 mm thick and tension strain is within 10 MPa to 500 MPa. In addition, invention relates to paper or cardboard roll drying by its compression in device from both sides.

EFFECT: possibility for fast switching over between different types of paper; profiled contacting area; integration of advantages from popular treatment methods; improvement of thermal treatment and expansion of hardware selection options.

75 cl, 23 dwg

FIELD: textile, paper.

SUBSTANCE: fabric contains multiple warp threads woven with multiple weft threads to form pattern on surface that faces paper with alternating first and second pockets. The first and second pockets are limited by raised warp and weft threads formed by long overlaps in weaving pattern. The first pockets are larger in area compared to the second ones. Inside the first pocket, warp fabric has smooth weaving pattern. And the second pocket inside may be separated into halves by raised weft thread.

EFFECT: invention provides for high bulking and air permeability of fabric, which makes it possible to avoid microopenings on paper made with the help of this fabric.

9 cl, 8 dwg

Drying cloth // 2461673

FIELD: textiles, paper.

SUBSTANCE: cloth has a system of transverse fibers oriented transverse to the movement of tissue in a machine containing transverse fibers. The system of longitudinal fibers, oriented in the machine direction, which in turn contains the first and second subsystems of longitudinal fibers. The said first subsystem contains jaws containing at least two longitudinal threads, which have essentially similar rates of dimensions. The longitudinal threads of the second subsystem have greater rates of dimensions than the longitudinal threads of the first subsystem. The said at least two threads of the first subsystem are stacked vertically on oriented in the machine direction of the single longitudinal thread of the second subsystem. And the longitudinal threads of the said first and second subsystems are intertwined with the said transverse fibers of the said system of transverse fibers in the weave rapport, and the seam loops are formed only from the longitudinal fibers of the first subsystem.

EFFECT: drying cloth provides ease of its installation on the machine, while simultaneous strength and the necessary smoothness.

45 cl, 16 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to a method and device designed for recovery of excess heat coming from high-temperature dome into the drying section of the paper-making machine. According to the invention, this heat is supplied through the heat exchanger from the steam system, respectively, in excess steam and condensate.

EFFECT: improved method of heat recovery which is easier to adjust, increased utilisation of energy contained in the air exhausted from the dome.

15 cl, 2 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to chemical technology of cellulosic materials and relates to cellulosic nano-filaments and the method of their production. The nano-filaments are thin filaments with a width of micron interval, the length of 2 mm, and made from natural fibres of wood and other plants. The nano-filament surface may be modified so that it comprises anionic, cationic, polar, hydrophobic or other functional groups. Insertion of the nano-filaments in the batch to obtain paper improves significantly the strength of the wet cloth and strength of the dry sheet much better than the existing natural and synthetic polymers.

EFFECT: invention provides creation of the cellulosic nano-filaments which are excellent additives for reinforcing paper and cardboard products and composite materials, and may be used for obtaining superabsorbents.

18 cl, 10 dwg, 6 tbl, 11 ex

FIELD: heating system.

SUBSTANCE: druing unit has, at least, one nozzle for supplying the drying fluid to the web in such a way that the drying fluid with the excited vibrations is directed to the web, at least, one outlet device for moist air obtained during the convection drying, and a conveying means for moving the web relative to the drying unit. The drying unit has, at least, one ultrasonic generator that is located in the region of the nozzle to create oscillations of the drying fluid so that ultrasound can help to reduce the moisture content over the entire width of the web.

EFFECT: reduction of the moisture content in the web by means of convection drying.

16 cl, 7 dwg

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