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WO/1991/013206A1 |
A method is disclosed for forming a paper web having a low tensile ratio. The method includes the steps of ejecting stock (S) substantially horizontally from a headbox (12), and receiving the rejected stock (S) onto a substantially horiz...
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WO/1991/010775A1 |
The device has a supporting surface (24) and a facing screen guide track (11), which form a wedge-shaped gap for a top screen (4) and a bottom screen (2) between which a wet nonwoven web (3) is located. The screen guide track (11) itself...
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WO/1991/005109A1 |
The present invention relates to an arrangement and a method for producing a fiber web (2) from pulp. The arrangement includes a clipping unit (3, 6, 8) for clipping the pulp (1), a defibering unit (5, 7, 11) for mutually separating fibr...
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WO/1991/002842A1 |
Disclosed is a twin-wire former for the production of a paper web, in which two screens (11 and 12) together form a zone which is divided into three section (I, II and III). In the first section (I), the two screens (11, 12) run over a c...
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WO/1991/001408A1 |
An improved system in a paper making process of forming and dewatering fiber/aqueous dispersion (44) by submerged drainage in which air does not penetrate the fiber/aqueous dispersion (44) nor the paper web as it is being formed; the dew...
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WO/1991/000768A1 |
The present invention relates to a method and apparatus for treating pulp, which method and apparatus are especially suitable for treating fiber suspensions in wood processing industry. The method and apparatus are particularly designed ...
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WO/1990/015899A1 |
A process for drying wet nonwovens on a Fourdrinier machine improves both the drying and the quality of the finished paper. The nonwoven is fed over a first wire screen belt section to the drying unit, from where it is conveyed on anothe...
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WO/1990/015186A1 |
A paper making machine forming board is described wherein the rate of drainage of the stock through the forming fabric is curtailed and controlled by applying a low positive air pressure above ambient atmospheric to the machine side of t...
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WO/1990/015188A1 |
A method and apparatus are disclosed whereby the rate of drainage of the stock on a paper making machine can be controlled for the full length of an open surface forming section. A continuous sealed drainage box is used from adjacent the...
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WO/1990/015187A1 |
A process and apparatus for improving paper formation on an open surface paper making machine is described. By the use of both a path for the forming fabric which introduces a controlled level of agitation into the stock, and a low level...
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WO/1990/009481A1 |
A forming apparatus (10) is disclosed for forming a web (W) from stock (S) ejected through a slice lip (12) of a headbox (14). The apparatus (10) includes a first wire (16) which extends in an endless loop (18) past the slice lip (12) su...
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WO/1990/005689A1 |
The present invention relates to a device for achieving uniform distribution of airborne fibres, for instance cellulose-fibres, in the outlet of a conduit intended for the air-transport of fibres, the device being placed in the outlet (1...
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WO/1990/005210A1 |
A forming apparatus (10) is disclosed for forming a web (W) from stock (S). The apparatus (10) includes in a headbox (12) for ejecting a jet (J) of the stock (S). A first and a second moving wire (14, 16) cooperate together to define the...
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WO/1990/004676A1 |
A paper machine for manufacturing a soft crepe paper web, comprising a wet end (1) having a forming wire (4) for forming and carrying a paper web (7), and a drying section (2) provided with a drying cylinder (12), said paper machine havi...
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WO/1990/002225A1 |
A tail cutter apparatus is disclosed for cutting a tail from a web (WA) extending through a single tier dryer section (10A). The apparatus (32) includes a dryer (14A) of the drying section (10A) and a felt (F) extending contiguously with...
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WO/1990/001580A1 |
An apparatus is disclosed for cutting a tail from a web (WA) extending from a single tier dryer section (15A) to a further single tier dryer section (16A). The apparatus includes a last dryer (18) of the dryer section (15A) and a dryer f...
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WO/1989/012139A1 |
The invention relates to a method of producing dry formed fibre material. This production takes place in at least two steps, a first step comprising formation of a cohesive, handleable material web under compression and supply of a reduc...
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WO/1989/011000A1 |
A twin-wire former for making a continuous web of paper (9) comprises two endless travelling screens (11, 12) which travel over breast rolls (13, 14) and form a wedge-shaped feed gap of a twin-wire region. In said region, the two travell...
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WO/1989/004397A1 |
In a double-screen format for a paper making or cardboard making machine, a suspension derived from the moving sheet is fed between a lower screen (9) and an upper screen (10). Devices act on the screens against an opposing counter surfa...
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WO/1989/002499A1 |
The invention concerns a means for controlling wires in a twin-wire section in a paper or cardboard machine. A dewatering box is provided on one side of the wires and a number of strips disposed side by side are provided on the other sid...
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WO/1988/008051A1 |
In a papermaking machine, the wire section (10-12) is followed immediately by a first longitudinal-gap press (20) in which a flat press gap is formed between a press roller (22) and a flexible press tube (23). The press gap can be presse...
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WO/1988/004224A1 |
A device for continuously weighing a web (2) at the manufacture of fibre board. The device comprises a forming wire (1) and forming devices (3, 5) for applying fibre material on the wire (1) and adjusting the thickness of the web (2). A ...
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WO/1987/006637A1 |
A forming apparatus (10) for forming a web from stock. The apparatus (10) includes a frame (14) and a first and second plurality of guide rolls (16-26 and 30-34) rotatably connected to the frame (14). A first and second forming wire (28,...
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WO/1987/006505A1 |
A disk screen, and method wherein the material, such as wood chips for making paper pulp, is screened through a rotary disk screening bed (12) of differentially spaced progressive variance in the between disk slots (20). Such variance ma...
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WO/1987/003920A1 |
A cylinder-vat unit (1) which has a cylinder mould (2), a vat (4) and a headbox (12) for supply of stock to the vat (4). The vat is arranged upstream of the cylinder mould (2) in such a manner that a downwardly moving part of the envelop...
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WO/1986/005825A1 |
Modern Yankee machines for thin paper qualities give the possibilities at present to approach machine speed of 200 m/min with a specific weight of about 17 g/m2. The machine consists of a forming section (often called a twin wire former)...
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WO/1986/004368A1 |
Procedure in the forming of a paper web and in dewatering the paper pulp suspension. A pulp suspension jet (J) is supplied onto a lower wire (11), water is drained through the lower wire (11), the fibre pulp course (Wo) is conducted into...
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WO/1986/002961A1 |
A twin-wire former which eliminates difficulties in regard to yields of fine starting materials and bonding strength in the direction of thickness of the paper without deteriorating the texture, yet maintaining high-speed operation. A be...
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WO/1984/003112A1 |
A method of producing a nonwoven fibrous web (20), such as paper, from a dispersion (15), preferably acqueous, of fibers wherein the fiber consistency is greater than 6 % of the dispersion weight and/or the dispersion is permanently stab...
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WO/1983/003109A1 |
A web-forming section of a paper machine includes a lower wire (10) loop having a wire run which constitutes a lower wire (10) of the web-forming section and which forms a single-wire initial portion (10a) of a dewatering zone of the web...
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WO/1982/004450A1 |
A conductor roll (12) is enveloped on a portion of its periphery by a moving sieve band (11). In the bandage (15) of the roll there are provided holes wherein the filtration water (which enters through the band) is accumulated temporaril...
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WO/1982/003413A1 |
The head box with tuyeres (100) has a tuyere chamber (120), two converging outer walls (95, 96) and an outlet nozzle (121) of the tuyere. There is provided at least three separate supply systems for the chamber with different liquids and...
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WO/1982/002910A1 |
This device, preferably formed as a dual screen paper machine, has according to a preferred embodiment two endless screens, mainly a lower screen (21) and an upper screen (22). The lower screen (21), on which is formed a paper web, and t...
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WO/1982/000484A1 |
A method is provided for producing a machine-glazed, cellulosic sheet (11) which includes the steps of wet-creping a cellulosic web (1), and compressing and drying the creped, wet web (6) against the smooth, heated surface of a thermal-d...
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WO/1981/002903A1 |
In a paper machine, a headbox with at least two paper stock flow passages, comprising turbulence generators. The distribution header of the headbox is of segmental design, consisting of two or more pulp suspension supplying segments (21,...
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WO/1981/002753A1 |
A procedure for dewatering and detaching a paper web (W) from the second former wire (13). The composite of first and second wire (12, 13) and interposed web (W) is contacted with a first cover part (33; 331) of a special suction box (30...
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WO/1981/002031A1 |
For distributing loose fibres on a moving forming web (2) in dry forming of paper an air fluidized fibre material is fed to and recirculated in a pipe circuit comprising two parallel, straight screen pipes (12) extending over the forming...
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WO/1980/002575A1 |
A method and a device for forming a paper web in a fourdrinier paper making machine. The stock is ejected onto the wire (3) through a slice (1). In order to dampen the hydrodynamic disturbances, the paper web is formed in a space (8) bet...
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JP2023184186A |
To provide a paper-making device that allows for efficient dewatering.A paper-making device 1 in an embodiment comprises: a tank 10 for storing slurry; a cylindrical circular mesh 20 rotatably placed in a position where a portion of the ...
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JP2023546644A |
The present invention has rolls (1, 10) having a roll bearing part (3), a bearing housing (4), and a motor (6), and the bearing housing (4) of the roll bearing part (3) is attached to the frame. Alternatively, the present invention relat...
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JP7357822B2 |
The present invention relates to a crescent former for producing tissue paper, the former comprising a forming section (A), a press section (B) and a drying section (C), wherein the crescent former further comprises a felt fabric (41) fo...
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JP2023064174A |
To provide a data processor, a data processing method, and a production system capable of obtaining an optimum set value of a final control element upon brand change.A data processor 20 includes: a collection part 21 which collects set v...
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JP7250918B2 |
A tissue machine (1) has a Yankee (3) and a shoe roll (4) that forms a nip with the Yankee (3). The nip has a maximum extension from an entry point (7) to an exit point (8). A flexible belt (9) forms an outer circumference of the roll (4...
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JP7219749B2 |
A method of making a fibrous sheet, the method comprising: (a) forming a nascent web from an aqueous solution of papermaking fibers; (b) applying the nascent web to an outer surface of a steam filled drum and dewatering the nascent web b...
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JP2022553437A |
The invention relates to tissue paper making machines designed for possible reconfiguration from one concept to another. The machine comprises a forming section (2) and a Yankee drying cylinder (3) rotatably mounted about a first axis of...
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JP2022185166A |
To provide a paper body that can reduce the manufacturing burden, a friction plate equipped with the paper body, a multiplate clutch device equipped with the friction plate, a paper body manufacturing apparatus and a method for manufactu...
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JP2022130258A |
To provide a paper and pulp manufacturing cost reduction method.A paper and pulp manufacturing process requires huge energy in a cooking process, and uses power of photovoltaic power generation in the required energy. By using the photov...
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JP7082781B2 |
To provide a paper making system capable of remotely monitoring the operation status of the papermaking machine, in which the operation of the papermaking machine can be resumed promptly because the papermaking machine manager can quickl...
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JP2021143450A |
To provide a formation detection system for monitoring formation of a paper sheet in a papermaking machine.A formation detection system of this invention comprises: (a) one or more sensors 24; and (b) one or more lights 22 illuminating a...
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JP6920682B2 |
To provide a papermaking apparatus and a method for dewatering a wet web which can efficiently dewater the wet web formed on a papermaking wire.A papermaking apparatus comprises a dewatering roller 45 which holds and dewaters a wet web W...
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