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JP3261661B2 |
PURPOSE: To improve bleaching of a craft pulp by treating an incompletely washed brownstock with a specified hemicellulase under specified conditions. CONSTITUTION: Delignification treatment of an incompletely washed brownstock is carrie...
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JP2002502921A |
The invention concerns a method for application of a layer of admixture in the web former unit of a board machine. The flow of fresh stock (11) is divided into at least two component stock flows (121 and 122), of which flows, to at least...
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JP2002013057A |
To provide a method for of forming an air laid fibrous web in an extremely high speed.This method comprises the following process: an airborne fiber stream is laid on a web-shaped forming member such as a wire net (20) and bonded togethe...
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JP3246919B2 |
An under felt inclined flat former for making multilayer or monolayer sheets of paper comprising a plurality of forming units arranged along a production line. Each of the forming units is supported on corresponding rigid supports and is...
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JP3243512B2 |
In a known method of rebuilding a conventional tissue machine having a conventional C-wrap type twin wire forming section to a TAD machine, a TAD section, which includes a looped TAD fabric (24) and at least one TAD cylinder (22) located...
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JP3244911B2 |
PURPOSE: To obtain a twin wire former having mild dehydration action to enable the symmetrical dehydration of a paper between the top and the back faces and providing a paper having excellent balance between the top and the back faces in...
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JP3244865B2 |
PURPOSE: To provide a dehydration blade of a twin wire dehydration apparatus of a paper machine capable of adjusting the degree of dehydration and varying the degree of fiber orientation. CONSTITUTION: Fin-shaped wire supports are attach...
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JP3241193B2 |
PURPOSE: To obtain the good paper quality, enable rapid exchange of sheet formation and reduce the amount of brokes in relation to a gap part controlling means for a twin-wire former of a paper machine. CONSTITUTION: This twin-wire forme...
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JP3194967B2 |
A multilayer headbox for a papermaking machine which comprises a slice chamber having an upstream inlet and a downstream outlet. A tube bank comprising a plurality of straight tubes is located upstream of the slice chamber. In the slice ...
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JP3188092B2 |
PURPOSE: To obtain a dehydration shoe blade capable of easily controlling the pulse pressure generated on the dehydration shoe blade in the case of switching the paper-making operation of a paper machine. CONSTITUTION: Each T-bar 2, 3 su...
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JP3181202B2 |
PURPOSE: To prevent lowering the yield of the fibers in a stock liquor conveyed in such a way as to be sandwiched between two sheets of wires due to the dehydrating blades mounted on the respective wires. CONSTITUTION: Two sheets of wire...
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JP3171419B2 |
PURPOSE: To improve the fiber orientation, yield, physical properties, etc., of a paper layer by easily changing the constitution of an endless wire according to the paper-making conditions such as the kind and freeness of various fiber ...
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JP3170288B2 |
A hood for a wire part and/or a press section in a paper/board machine including walls and a ceiling which form a closed hood around the wire part and/or press section, air-conditioning or another air-control system being arranged in con...
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JP2001115385A |
To provide a twin-wire former capable of depressing cost of manufacturing dehydrators, capable of reducing abrasion of the dehydrators and wires so as to prolong lifetime of the wires, and capable of decreasing power loss caused by conta...
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JP2001115386A |
To provide a method of dehydration used for papermaking, generating an appropriate inner pressure in paper stock in accordance with a concentration of the stock, improving dispersibility of fibers in the paper stock, and therefore capabl...
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JP3140614B2 |
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JP2000345490A |
To provide a paper machine and a paperboard machine having a shorter structure than that of a known structure for producing a paper and a paperboard of a grade thereof conventionally requiring the undercoating.A stock is fed from a headb...
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JP3105646B2 |
PURPOSE: To provide a wire loading device designed to apply a mechanical load to the wire of a paper machine across its entire width. CONSTITUTION: This loading device comprising loading devices 10a, 10b, 10c has a plate-shaped spring bl...
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JP2000256985A |
To simultaneously and economically dehydrate the wet paper web, the forming screen and the conveying screen by nipping the wet paper web from the head box between the forming screen and the conveying screen and allowing them to pass thro...
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JP3087224B2 |
In a twin wire former a headbox injects stock onto a forming wire with which a second forming wire is brought into gradual engagement. A forming shoe directs the two wires along a path of increasing curvature, above which water is draine...
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JP2000511241A |
In order to meet higher demands for the properties of paperboard products an improved method and machine for the manufacture of paperboard are proposed according to the present invention in which a core (3) of a paperboard web is formed ...
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JP3074311B2 |
A method is disclosed for forming a paper web having a low tensile ratio. The method includes the steps of ejecting stock substantially horizontally from a headbox, and receiving the rejected stock onto a substantially horizontally dispo...
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JP3064134B2 |
The present invention is to manufacture paper layer with high grammage and good, formation even in lower speed by making direction of hydration of a fixed type dehydrator having a curvature at least partly downward so as not to reverse t...
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JP3040634B2 |
PURPOSE: To enable to produce high quality paper at a high speed by enabling the operation of a twin wire former in both the modes of a gap former and a hybrid former and preventing two wires from winding air in their proximity travel ro...
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JP3021223B2 |
PURPOSE: To attain high dispersing effect even in the case of a raw material having high concentration by opening a water-pouring hole near the tip end of a curved outer supporting member among the supporting members to support a pair of...
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JP2000064187A |
To provide a paper machine capable of preventing a bad condition such as spotting, etc., caused by air entrainment of free jet even in a high-speed paper making. The tip part of a vertical wall 22 constituting a current part of a head bo...
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JP2000034688A |
To provide a method and a device capable of removing waste trimmings from formed paper tissues without using nozzles or other device elements which are expensive for maintenance. This method for removing waste trimmings of a tissue made ...
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JP2000034660A |
To provide both a method for producing a wet nonwoven fabric by which the production line can be shortened so that a water jet can be applied to a fibrous web just after the formation of the fibrous web because the distance from a step f...
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JP2996747B2 |
At the section of the papermaking machine where the pulp turns into paper, the widths and positions of the bars in contact with the fourdriniers are set in relation to each other together with the gaps between them so that every other ga...
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JP2995227B2 |
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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JPH11350370A |
To obtain a belt that can be guaranteed the proper control of the dehydration state along the widthwise direction by permitting the dehydration toward both in the former that is closed on one side of the belt and opened on the contrary s...
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JPH11514710A |
PCT No. PCT/FI97/00487 Sec. 371 Date May 4, 1998 Sec. 102(e) Date May 4, 1998 PCT Filed Aug. 22, 1997 PCT Pub. No. WO98/10138 PCT Pub. Date Mar. 12, 1998The invention relates to a method for preventing rewetting of a web in a former. Wat...
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JP2986168B2 |
Method and apparatus for forming three dimensional shaped webs. The apparatus controls the flow of entraining air for an air laid web by restricting passage of the air through selected zones of a condensing surface. By limiting the open ...
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JP2977282B2 |
A tissue web (W), which has improved formation and improved tensile properties but no appreciable deterioration of retention and layer purity, if applicable, in comparison with tissue webs produced in conventional twin wire tissue former...
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JP2969003B2 |
A double screen former for the manufacture of a paper web has two continuous screens forming together a double screen zone. The one screen runs in the double screen zone across rigid laths that are arranged on the dewatering box at a mut...
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JPH11512791A |
A method and device for enhancing the run of a web in a paper machine in which water is removed from the web by pressing the web in at least one press nip and after pressing, the web is dried in at least one dryer group applying impingem...
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JP2955024B2 |
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JPH11508975A |
A paper machine for manufacturing a web of soft crepe paper comprises 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 cylinder...
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JP2909258B2 |
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JP2898752B2 |
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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JP2899414B2 |
The invention concerns a pressing arrangement for a moving web (6), comprising a press roll (1) which forms a press zone (7) with a moving elastic belt (5) which is endless and supported by a counter body (2, 9). The outside of the belt ...
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JPH11124786A |
To deal with the watermark formation, watermark pattern and filler clogging of various suction cylinders and suction rolls to be used for a wire part, a press part, etc., to readily change the constitution of each paper layer formation u...
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JPH11124761A |
To provide a device for air laying a material having a shape of a fiber or particles over a traveling band. This device for air laying a fibrous material or a particle material is provided by comprising at least a limited space 10 arrang...
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JP2885656B2 |
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JP2884765B2 |
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JPH11100789A |
To provide a method for producing a coated paper for rotary offset printing, excellent in smoothness, gloss and stiffness and having excellent running stability on a rotary offset press by using a base paper prepared by forming a sheet o...
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JPH11100788A |
To produce a coated paper for printing, good in formation and excellent in blister resistance under high-speed operating conditions by using a gap former. This coated paper for printing is produced by controlling the ratio (top wire/bott...
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JP2874973B2 |
Processes are described for making highly absorbent tissues and towels by wet-laying pulps comprising particular polycarboxylate polymer-modified fibrous pulps such as mildly hydrolyzed methyl acrylate-grafted softwood kraft pulps; these...
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JP2872350B2 |
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JP2850981B2 |
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