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WO/1998/007998A1 |
This invention concerns a roller (110) which can be heated which has a cylindrical roller body (10) which turns about its axis (2) and has a first hollow arrangement (H�1?) and a second hollow arangement (H�2?) in the form of several...
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WO/1998/005954A1 |
When an ultrasonic transducer for detecting flaws in metal plates or the wall of a metal cylinder is directed at a surface to be inspected at a particular angle, about ten percent of the signal will appear as Harris waves which propagate...
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WO/1998/004777A1 |
The invention concerns a method for drying a paper to be surface-treated, in particular fine paper, in an after-dryer in a paper machine. In the method the paper web (W) is first dried in the forward dryer section of the paper machine by...
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WO/1998/003728A1 |
The invention concerns a method for the disinfecting and dewatering of a web, strip or the like formed continuously from a suspension, for example, a fibrous material suspension, for producing paper, cardboard or the like, using mechanic...
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WO/1998/003729A1 |
The invention concerns a method of disinfecting paper or cardboard. During paper or cardboard manufacture, it is becoming increasingly important to destroy the microbiological-type germs remaining in particular in the lower layers of the...
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WO/1997/049863A1 |
The invention concerns a method in drying and/or cooling of a web. In the method the web (W) is passed over the circumference of a blow drum (10) or equivalent, and the web (W) is dried by means of a drying gas that is blown out of openi...
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WO/1997/048853A1 |
The invention concerns a method and a device in connection with impingement drying and/or through-drying of a paper web or equivalent. In the invention the paper web (W) is dried by blowing hot air or equivalent by means of an impingemen...
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WO/1997/045588A1 |
The dryer section in a papermaking machine has a single tier of all top felted dryer rolls (24) six to nine feet in diameter. Air caps (42) are employed over the dryer rolls (24) to simultaneously dry both sides of the web (28) to preven...
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WO/1997/043484A1 |
An uncreped tissue sheet having improved softness results from supplementally dewatering a wet web to a consistency of greater than about 30 percent using noncompressive dewatering techniques (30) prior to a differential speed transfer (...
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WO/1997/042032A1 |
A roller (1) as a control object and an apparatus (10) for supplying a heat transfer medium are connected through at least one valve-pipe assembly (11) comprising a tubular member (14) and a valve (15). On the basis of the control signal...
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WO/1997/039185A1 |
A method and an arrangement for utilizing energy of an apparatus for drying a fibre web. The drying apparatus comprises two endless bands (1, 2) that are impermeable to air and that have a good thermal conductivity. A fibre web (5) runs ...
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WO/1997/039186A1 |
A method and an arrangement for utilizing condensation water of an apparatus for drying a fibre web. The drying apparatus comprises two endless bands (1, 2) that are impermeable to air and that have a good thermal conductivity. A fibre w...
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WO/1997/039183A1 |
A method for drying a fibre web, said method comprising passing the fibre web with at least one paper machine fabric between two bands which move in parallel, said bands having a good thermal conductivity and being impermeable to air, in...
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WO/1997/039299A1 |
The invention concerns a method and a device for drying a moving web material (P). The device (10) is fitted to direct infrared radiation at the moving web material (P) to be dried. The device (10) comprises at least one first infrared r...
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WO/1997/039184A1 |
A siphon for removing condensation water from the surface of a planar band. The siphon comprises a slide shoe (18), and at least one loading element for pressing the slide shoe (18) so that it is substantially in contact with the surface...
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WO/1997/039187A1 |
A method and an arrangement for utilizing energy of an apparatus for drying a fibre web. The drying apparatus comprises two endless bands (1, 2) that are impermeable to air and that have a good thermal conductivity. A fibre web (5) runs ...
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WO/1997/037077A1 |
In order to avoid the use of heat transfer fluids flowing through peripheral heating channels of heated calender rollers, supporting tubes (4) made of a soft elastic plastic are provided inside the heating channels (3). A resistance-heat...
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WO/1997/036045A1 |
A Yankee hood comprises an integral air heating system combining the hood with circulating fans, air heaters and an air flow duct work distribution system into one assembly with the air system apparatus located inside the hood. Motors fo...
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WO/1997/032080A1 |
The invention concerns a dryer section of a paper machine which is provided with one or several nips (NK;NKP) of intermediate calendering and in which dryer section there are several successive wire groups (R). The dryer section is prima...
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WO/1997/031755A1 |
An apparatus for grinding surfaces comprising a frame (1, 2), machine tools (3, 4, 5, 6, 7) attached to the frame, and several bearing elements (11, 12, 13, 14, 15, 16) attached to the frame which include a bearing surface (20) leaning o...
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WO/1997/030214A1 |
The invention relates to a dryer apparatus for fiber webs (10), such as webs of natural fiber, synthetic fiber and the like. The apparatus comprises a rotating dryer cylinder (1), the interior of which is provided with elements (8) for i...
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WO/1997/023689A1 |
A device for introducing a high-temperature fluid into a rotating body, comprising a pipe (2) through which said fluid passes, and which is solidly connected to said rotating body. The pipe is rotatably coupled to a support (6) by means ...
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WO/1997/023690A1 |
The invention relates to a dry end for drying a material web, in particular a paper or cardboard web, having at least one drying group with a plurality of drying cylinders and web guiding rollers and at least one nozzle device for transp...
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WO/1997/022729A1 |
Method of improving the tribological and erosive wear resistance of yankee dryer drums including coating the drum with an iron alloy containing from about 20 to about 47 weight per cent chromium, about 2.5 to about 6.5 weight per cent bo...
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WO/1997/021969A1 |
A processing roll (102) having a cylindrical sidewall (104) defines an interior chamber for steam. The interior surface (110) of the roll (102) is formed with longitudinal grooves (130) which lead to a collecting location (148). There ar...
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WO/1997/019223A1 |
An apparatus for drying a fibre web, the apparatus comprising two endless bands that conduct heat well and are impermeable to air, which bands are arranged to run part of the way parallel with each other, the first band (1) being heated ...
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WO/1997/016594A1 |
A blow box (2) for use in a plant for drying a material web (1), comprises an essentially horizontal upper box wall (3) having formed therein circular orifices (5) and so-called eyelid perforations (6), each one of which consists of a sl...
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WO/1997/015720A1 |
The invention overcomes the problem of paper edge overdrying during the paper drying process on paper machine drying cylinders. It comprises applying a thin ceramic coating onto the circumferential exterior surface of the cylinder near t...
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WO/1997/013031A1 |
The invention concerns a method in a paper machine or equivalent, in which method water is removed out of the paper web (W) or equivalent by pressing, in which pressing stage the paper web or equivalent is pressed in at least one press n...
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WO/1997/003247A1 |
A paper machine for manufacturing a web of soft crepe paper, comprising a wet end (1) having at least one forming wire (4) for forming and supporting a web (7), and a drying section (2) with a through drying machine (13), a drying cylind...
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WO/1996/041053A1 |
A limiting orifice through-air-drying apparatus for papermaking or other absorbent embryonic webs. The apparatus has a first zone (41) and a second zone (42). The first (41) zone is maintained at a differential pressure less than the bre...
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WO/1996/039604A1 |
Cylinder (20) for heat-treating rotates about a horizontal axis and is heated by a complement of internal stationary infrared burners (38) that extend all along the length of the cylinder, but only partway around the cylinder, forming ga...
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WO/1996/034145A1 |
The invention concerns a hood for a wire part and/or for a press section in a paper/board machine, comprising walls and a ceiling (10, 20), which form a closed hood around the wire part and/or the press section, air-conditioning being ar...
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WO/1996/032534A1 |
The invention concerns a dryer-section concept of a paper/board machine and a method in the drying of a paper/board web (W). The dryer section comprises a number of drying cylinder groups (RI...RN), which comprise a single-wire draw, on ...
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WO/1996/032535A1 |
The invention concerns a device in the dryer section of a paper machine, by means of which device a blowing is fitted to be produced to support the paper web or equivalent, which device comprises an air space (15), into which the air to ...
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WO/1996/029467A1 |
A method for drying a sheet of cellulose material, particularly a sheet of wet paper having a dry grammage of 10-80 g/m2 and a starting dryness level of 8-30 %, wherein said sheet is supported on a permeable web and hot air is caused to ...
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WO/1996/023103A1 |
A paper drying section utilizes two reversing rolls (26, 28) between each dryer roll (22, 24) to extend the available time for vapor to flash from the web. A vacuum box is disposed between the two reversing rolls to support and dry the f...
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WO/1996/023102A1 |
The dryer of this invention employs a vacuum chamber interposed below and between first and second heated dryer rolls (26, 28). The vacuum chamber has two sides and a top which overlies two grooved reversing rolls (110, 114). The vacuum ...
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WO/1996/022419A1 |
This invention relates to a method of drying a pulp web, an apparatus being utilized having a great number of jet boxes, which are arranged in piles parallel with each other, and which are provided with openings through which heated air,...
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WO/1996/021769A1 |
A smooth, high density tissue. The tissue has a relatively low caliper, yet maintains visually discernible machine direction micropeaks at a suitable micropeak frequency.
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WO/1996/021768A1 |
A smooth, high density tissue. The tissue has a relatively low caliper, as well as high smoothness and high density. The tissue is calendered from a multidensity, through air dried web.
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WO/1996/016305A1 |
Disclosed is a method for reducing the moisture content of a paper web in a papermaking process from in the range of 10 % to 32 % dry to the range of 33 % to 50 % dry wherein the embryonic web (14) is supported on a knuckled through drie...
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WO/1996/011300A1 |
An apparatus for drying and smoothing a fibre web (5) between two tight bands (1, 2) that move in parallel and turn around turning rolls (6a, 6b, 7a, 7b), the first band (1) being heated with hot steam and the second band (2) being coole...
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WO/1996/006218A2 |
A processing roll adapted to engage paper or the like to heat and/or shape the same. The roll has a cylindrical side wall and defines an interior condensing chamber for steam. The interior surface of the roll is formed with longitudinal ...
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WO/1996/005371A1 |
A paper changing operation control apparatus provided in a paper machine, which has web drying simulation function for drier parts, so as to improve the reliability of a paper changing control operation in a paper machine and reduce the ...
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WO/1996/001341A1 |
A device is arranged in the drying section of a papermaking machine for reducing the effects of the tendency of a paper web (4) to adhere to a drying cylinder (1) as it passes from the drying cylinder to a subsequent guide roll (2). In t...
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WO/1995/031601A2 |
The drier section has a plurality of drier groups (2, 4), each of which has a plurality of heatable drying cylinders (14, 11) and an endless pressure belt (9, 9') which pushes the running web (8) to be dried to the drying cylinders. In a...
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WO/1995/030795A1 |
The proposed paper coating device comprises a device for applying a liquid coating medium to a moving paper sheet, and a drying device with at least one sheet deflector device which guides the sheet with the aid of an air cushion and wit...
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WO/1995/027877A1 |
A paper web (12) in a paper machine including a yankee dryer (10) is dried and the moisture profile thereof controlled by arraying a plurality of gas burners (30) in a cross-machine direction within the hood (16) of the yankee dryer to d...
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WO/1995/027879A1 |
Apparatus for drying a wet paper web during manufacture of the paper web. The apparatus allows the moisture profile of the web to be carefully controlled and adjusted. The apparatus includes a rotatable dryer drum (10) and a hood (14) pa...
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