EP0526592A1 - Machine a papier pour la fabrication de papier crepe tendre a haut indice de bouffant. - Google Patents

Machine a papier pour la fabrication de papier crepe tendre a haut indice de bouffant.

Info

Publication number
EP0526592A1
EP0526592A1 EP91919037A EP91919037A EP0526592A1 EP 0526592 A1 EP0526592 A1 EP 0526592A1 EP 91919037 A EP91919037 A EP 91919037A EP 91919037 A EP91919037 A EP 91919037A EP 0526592 A1 EP0526592 A1 EP 0526592A1
Authority
EP
European Patent Office
Prior art keywords
web
paper
fabric
paper machine
conveying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91919037A
Other languages
German (de)
English (en)
Other versions
EP0526592B1 (fr
Inventor
Jan Anders Erikson
Anders Tommy Linden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Paper Karlstad AB
Original Assignee
Valmet Karlstad AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valmet Karlstad AB filed Critical Valmet Karlstad AB
Publication of EP0526592A1 publication Critical patent/EP0526592A1/fr
Application granted granted Critical
Publication of EP0526592B1 publication Critical patent/EP0526592B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/006—Making patterned paper

Definitions

  • the present invention relates to a paper machine for the manufacture of soft crepe paper and including a wire section, which has at least one forming fabric loop for forming a paper web, and a drying section in ⁇ cluding a Yankee dryer, in which drying section the paper web is dried, said paper machine having a first operative design for the manufacture of soft crepe paper having certain measurements of bulk and softness, in which first operative design a press section located between the wire section and the drying section has a felt movable in an endless loop and arranged to run from a pick-up device located at a transition be ⁇ tween the wire section and the press section to a press roll forming a nip with the Yankee dryer while carrying the paper web on its under side, the carrying forming fabric being arranged to run up to said pick-up device in the press section for the transfer of the formed paper web to said felt.
  • the known conventional soft crepe paper machines of twin wire, fourdrinier, or breast roll former type are designed in such a way that they can not readily be converted into different operative designs for making it possible to manufacture soft crepe paper grades of consider ⁇ ably different requirements for bulk and softness.
  • One object of the present invention is to eliminate the above problem and provide a soft crepe paper machine, which in a simple manner can be converted in order to be adapted to varying situations on the market, such as actual competitive situation and wishes from the consumers.
  • the paper machine is designed to be simp ⁇ le to rebuild between said first operative design and a second operative design for the manufacture of soft crepe paper having higher measurements of bulk and softness in relation to the first operative design, in which second operative design a conveying and imprinting fabric loop is substi ⁇ tuted for the felt of the press section, air current generating means being provided along at least one of said fabrics for the removal of water from the paper web by flow of air of ambient temperature through the paper web carried by the fabric in question, cleaning means being provided along the conveying and imprinting fabric for the cleaning thereof so as to continuously maintain its permeability to water and air, and means being provided for depleting the conveying and imprinting fabric of water before the arrival thereof at said pick-up device.
  • Another object of the invention is to eliminate the above problem and provide a paper machine for the manufacture of a soft crepe paper grade, which in respect of bulk and softness is comparable to the one manufac ⁇ tured on a machine made for through-air drying by hot air.
  • a drying section including a Yankee dryer for drying the web
  • a press section located between the wire section and the drying sec- tion and including a conveying and imprinting fabric for conveying the web from the forming fabric to the Yankee dryer and a press roll for pressing the web on to the Yankee dryer while imprinting the web;
  • a pick-up device for picking up the web from the forming fabric and transferring the web to the conveying and imprinting fabric without any appreciable compaction of the web;
  • Fig. 1 schematically shows a preferred embodiment of a paper machine according to the invention for the manufacture of soft crepe paper.
  • Fig.2 schematically shows a section of the paper machine according to Fig.l equipped with a single-felted press co-operating with a press roll located at the Yankee dryer.
  • Fig.3 is a diagram illustrating the interrelation between density and basis weight of soft crepe paper manufactured in machines of two differ ⁇ ent operative designs.
  • FIG 1 With reference to figure 1 there is schematically shown parts of a con ⁇ ventional paper machine suited for the manufacture of soft crepe paper, such as tissue and other sanitary paper products.
  • the shown paper ma ⁇ chine is a twin-wire machine including a wire section 1, a press sec ⁇ tion 3 and a drying section 5.
  • Wire section 1 has a headbox 7, an end ⁇ less carrying or inner forming fabric loop 9, an endless covering or outer forming fabric loop 11, and a forming roll 13 that may have a per- forated surface and be equipped with internal suction apparatus or, al ⁇ ternatively, have a plain surface.
  • Headbox 7 discharges a single layer or a multi-layer stock jet into a gap between the two moving forming fabrics 9, 11 for the forming of a paper web 15 by the drainage of water from the stock.
  • the two forming fabrics run together over the forming roll 13 and then in individual loops over a plurality of rolls, which are arranged to guide, align and tension the carrying or inner forming fabric 9 and the covering or outer forming fabric, respectively.
  • the rolls for the covering forming fabric 11 include a breast roll 17 and a guide roll 19, which is located a short distance downstream of the form ⁇ ing roll 13 and may be called a turning roll.
  • the covering forming fab ⁇ ric 11 may leave the carrying forming fabric 9 and the paper web 15 ei ⁇ ther immediately before fabric 9 and paper web 15 run off from forming roll 13 or alternatively, when required or preferred, at a transfer suc ⁇ tion box 21 or some other transferring device, which preferably operates by air flow, located between forming roll 13 and turning roll 19.
  • the carrying forming fabric 9 runs up to press section 3, where the paper web 15 is transferred to press section 3 by means of a pick-up device 23 included in the press section.
  • Press section 3 has an endless looped movable fabric 25, which in a first operative design of the paper machine is a felt, that is a fabric provided with a fine fiber surface ("nap") of a natural or synthetic material.
  • the felt is arranged to convey paper web 15 from pick-up de ⁇ vice 23 to a nip formed between a press roll 27 and a Yankee dryer 29 incorporated in the press section 5.
  • Press roll 27 presses paper web 15 on to the jacket surface of Yankee dryer 29 simultaneously as felt 25 and press roll 27, which in this operative design of the machine prefer- ably is a roll having a perforated surface, remove moisture from the paper web.
  • nip felt 25 extends around a guide roll 31 and up to and through a second nip formed between a second press roll 33 and Yankee dryer 29, where felt 25 once more is pressed against paper web 15 to effect removal of any pattern caused by the perforated surface of the first press roll 27.
  • second press roll 33 Downstream of second press roll 33 there are means for cleaning and conditioning felt 25, which after the conditioning thereof should have a moisture content suited for the picking up of paper web 15 from carrying forming fabric 9.
  • Yankee dryer 29 is covered by a hood, not shown, in which hot air of high velocity is ejected against paper web 15.
  • the paper web is creped off from Yankee dryer 29 by means of a creping doctor, not shown, in order to obtain a desired creping degree, whereupon the finished creped paper web is wound in a reel-up (not shown).
  • the second operative design of the paper machine is intended for the - manufacture of a soft crepe paper having higher values of bulk and soft ⁇ ness than what is obtainable in the paper machine according to the first operative design.
  • a conveying and imprint ⁇ ing fabric for felt 25.
  • the conveying and imprinting fabric 25 can either run over the same rolls as the felt ran over, or guide roll 31 may be bypassed, so that
  • the conveying and imprinting fabric runs from the first press roll 27, which in the second operative design preferably is roll having a plain surface, along the jacket surface of Yankee dryer 29 directly to the second press roll 33. In both cases it is suitable that the second press roll 33 be taken out of pressing engagement with Yankee dryer 29, so
  • the first imprinting operation is effected where the first press roll 27 presses paper web 15 on to Yankee dryer 29, and the pressing on is carried out with a force that preferably is at least 50 kN/m web width. If, however, in the second operative design the first press roll
  • 35 27 is a roll having a perforated surface, e.g. a suction roll, it is suitable to expose the paper web 15 to a second imprinting operation by means of the second press roll 33 in order to remove the pattern that may be caused by the perforations of the first press roll 27.
  • a perforated surface e.g. a suction roll
  • the paper machine in the second operative design to operate in the intended manner and produce a marketable soft crepe paper grade it is of utmost importance to maintain conveying and imprinting fabric 25 clean and, in addition, depleted of water upon its arrival at pick-up device 23.
  • the cleaning equipment 41, 43, 45 is more extensive than what is required for cleaning and conditioning a felt in a conven ⁇ tional soft crepe paper machine and comprises a plurality of oscillating needle jet shower pipes 41, a plurality of fish-tail jet shower pipes 43 and a plurality of suction boxes 45. After installation of these shower pipes and suction boxes, they may, of course, be used also for the clean ⁇ ing and conditioning of a felt, but then you do not normally use all of the shower pipes and the suction boxes.
  • Two of the fish-tail jet shower pipes 43 are shown located and directed so as to produce a flooded nip where fabric 25 starts wrapping a guide roll.
  • a flooded nip is particu- larly suitable for the cleaning and conditioning of a felt but is useful also for the cleaning of conveying and imprinting fabric 25.
  • a conditioned felt shall contain such an amount of water that the pick ⁇ ing up of paper web 15 from forming fabric 9 is facilitated.
  • the conveying and imprinting fabric 25 is to be depleted of water by a water depleting means 47 upstream of the pick-up location.
  • the wa ⁇ ter depleting means 47 suitably operates by means of an air flow passing through the conveying and imprinting fabric, and in the shown embodiment it is a suction box 47 but it would, of course, be possible to use alter- natively a blow nozzle solely or in combination with the suction box.
  • Suction box 47 and at least one of suction boxes 43 may suitably be moun ⁇ ted so as to make them easily movable between an active position, in which they engage fabric 25, and an inactive position, in which they do not, since they do not have to be active when fabric 25 is a felt.
  • a plurality of shower water save-alls 49 are provided for collecting the shower water passing through fabric 25 without being sucked into the cleansing suction boxes 45.
  • the pick-up device may be a roll or shoe having a plain surface.
  • the pick ⁇ up device preferably should operate with air flow through forming fabric 9, paper web 15 and conveying and imprinting fabric 25 and it may com- prise a suction device, e.g. a suction roll or, as shown in the preferred embodiment, a suction shoe 51.
  • a suction device e.g. a suction roll or, as shown in the preferred embodiment, a suction shoe 51.
  • a still more improved effect is obtained if a blow nozzle 53 is provided inside the loop of the carrying forming fabric 9 and aligned with the suction zone of the shoe 51 or roll.
  • the pick-up device 23 operating with air flow will work excellently also in the first operative design where fabric 25 is a felt. Then, blow nozzle 53 is not required for securing the picking up of paper web 15 from form ⁇ ing fabric 9.
  • air current generating means are provided for effecting a flow of air of ambient temperature through paper web 15.
  • the air current generating means comprise two suction boxes 35, 37 located inside the loop of the carrying forming fabric 9 between transfer suction box 21 and pick-up device 23, and a suction box 39 located inside the loop of conveying and imprinting fabric 25 between pick-up device 23 and first press roll 27.
  • suction boxes 35, 37 and 39 and the location thereof be ⁇ tween transfer suction box 21 and first press roll 27 may be varied with ⁇ in the scope of the present invention. However, it is necessary to pay attention to the moist and comparatively fragile soft crepe paper web not adhering to strongly to carrying forming fabric 9 or conveying and imprinting fabric 25.
  • Means 55 may be provided, if desired, for applying a suitable release agent to conveying and imprinting fabric 25 for the purpose of reducing the adherence of web 15 to the fabric.
  • Such means illustratively is a spraying device 55 located on the web facing side of fabric 25 immediately downstream of suction box 47.
  • a natural coating substantially consists of hemicellulose and fiber fragments, but to improve control of the adhesive properties of the coating an adhesive agent and/or a release agent may be added.
  • the amount of hemicellulose is controlled by controlling the pH of the stock, while the chemicals may be added to the stock or applied to the formed paper web or, preferably, directly onto the jacket surface of the yankee dryer.
  • the adhesion of the web to the coating affects all properties of the paper web, and the coating also affects the wear of the yankee dryer surface and of the doctor blade.
  • a steam box 61 for heating paper web 15 by means of direct steam may be provided immediately upstream of suction box 35 and on the web carrying side of forming fabric 9.
  • the heating reduces the viscosity of the water, so that it will be easier to suck it out.
  • the dewatering rate will be increased by the sucking through of air.
  • roof element 63 In order to shield paper web 15 from condensate drippings and possible splashes of water when carried hanging on the underside of conveying and imprinting fabric 25, a web- covering heatable roof or shield element 63 is placed above the lower run or flight of the conveying and imprinting fabric. Roof element 63 may be provided with conduits, not shown, for conducting hot water or steam therethrough but may also be heated in some other way, e.g. by electricity.
  • the paper web should have a dry solids content of at least about 25 % when the first press roll 27 presses web 15 on to Yankee dryer 29.
  • the number of paper web dewatering suction boxes 35, 37 and 39, the flow of air through web 15, and the possible heating by direct steam are adjusted so as to achieve the aforesaid dry solids content.
  • heating by infrared (IR) radiation may be used, e.g. from one or more hood-type IR heaters, not shown, or other equipment able to emit IR radiation.
  • Hood-type IR heaters may also be used for facilitating the drying of paper web 15 on Yankee dryer 29, and in figure 1 there is shown one such IR hood 65 placed somewhat downstream of second press roll 33.
  • a compact standard hood having a single row of IR elements can emit about 125 kW/m web width.
  • paper web 15 reaches a dry solids content of about 25-30% al ⁇ ready on forming fabric 9, and the dry solids content is increased by one or several more percent along conveying and imprinting fabric 25. If it is desired to raise the dry solids content of web 15 still more be- fore the web is pressed on to Yankee dryer 29, it is possible to supple ⁇ ment the paper machine with a conventional ' single-felted press, as shown schematically in figure 2.
  • the conveying and imprinting fabric 25 which on its under side carries paper web 15, runs from the bottom side of first press roll 27 up to and around a turning roll 67, from where it runs to the press nip formed between first press roll 27 and Yankee dryer 29.
  • Press roll 27 constitutes a counter roll of a conventional single-felted press, generally indicated by 69, having a press roll 71 and an endless felt 73 running over a plurality of rolls 75.
  • a suction box 77 is provided in ⁇ side the loop of conveying and imprinting fabric 25 upstream of turning roll 67 for securing that paper web 15 will not be transferred to press felt 73 but will remain adhered to conveying and imprinting fabric 25.
  • Such a conventional single-felted press will raise the dry solids con- tent of paper web 15 by up to an additional five percent.
  • the lower press roll 71 is moved from its illustrated 6 o'clock position in relation to press roll 27 to a 7 o'clock position. This makes it possi- ble to leave out turning roll 67 and suction box 77.
  • the conveying and imprinting fabric 25, carrying the paper web 15 will then follow the surface of press roll 27 up to the nip formed by roll 27 with yankee dryer 29.
  • the press felt 73 will be run to the 6 o'clock position, and then will pass tangen- tially and horizontally from roll 27. Consequently, paper web 15 will not be transferred to the press felt 73, but will instead remain adhered to the bottom side of conveying and imprinting fabric 25 when the latter passes upwardly on press roll 27.
  • Figure 3 is a diagram showing density as a function of basis weight for soft crepe paper manufactured on one hand in a conventional paper ma ⁇ chine according to the first operative design and on the other hand in the same machine after a rebuilding thereof to the second operative de- sign.
  • a single-felted press in accordance with the variant shown in fig ⁇ ure 2 was not used.
  • the upper line 79 relates to a soft crepe paper manufactured in the conventional manner
  • the lower line 81 relates to soft crepe paper manufactured in the rebuilt machine, where the conveying and imprinting fabric was substituted for the pick- up felt, and where water was removed from the paper web by passing air of ambient temperature through the web in an amount sufficient for rais ⁇ ing the dry solids content of the paper web to at least about 25% before the paper web arrived at the Yankee dryer.
  • the latter soft crepe paper 81 has a density, which at low basis weights is about half the density of the conventional soft crepe paper, and the percentage difference increases with increasing basis,weight.
  • 3 3 corresponds to a bulk of 5 dm /kg, and a density of 80 kg/m corresponds
  • the soft crepe paper in accordance with line 81 has at low basis weights twice as high a bulk as conventional soft crepe paper and the percentage difference in bulk increases with in ⁇ creasing basis weight.
  • the density of soft crepe paper manufactured in a conventional through- air drying machine using hot air is essentially of the same order as that indicated by the lower line 81.
  • the bulk of a soft crepe paper grade in accordance with the lower line 81 consequently is fully comparable to the one manufactured in a through-air drying machine utilizing hot air. While the softness has not been measured, it is well known that the soft- ness increases with increasing bulk of the soft crepe paper. The in ⁇ creased softness is appreciated by consumers but in some cases can result in adaptation problems during conversion of the soft crepe paper web to the desired end products.
  • the first press roll has a perforated surface
  • substitute for said roll a roll having a plain surface.
  • the time required for the rebuilding will as a conse ⁇ quence, be short.
  • the rebuilding should be finished in only a slightly longer time (about 12 hours or less) as is needed for changing the pick ⁇ up felt in a conventional soft crepe paper machine.
  • the cost of converting an existing old soft crepe paper machine into paper machine according to the present invention is estimated to be 10-20% of the price of a new through-air drying machine.
  • a soft crepe paper manufacturer can produce a soft crepe paper grade, which with regard to bulk and softness is fully comparable to the one manufactured in a machine using through- air drying by hot air.
  • twin-wire formers of C-wrap type but, of course, it can be applied also in other formers, e.g. twin-wire formers of S-wrap type, fourdrinier formers and suction breast roll formers.

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  • Paper (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Golf Clubs (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Toys (AREA)

Abstract

Machine à papier destinée à la fabrication d'un papier crêpé tendre qui, sur le plan de la douceur et du bouffant, peut tout à fait se comparer à celui qui est fabriqué dans une machine à papier comportant un système de séchage à l'air chaud; le principe en est celui d'une machine à papier crêpé tendre traditionnelle, dans laquelle une étoffe d'impression et de transport (25) remplace le feutre leveur. Un dispositif leveur (23) fonctionnant par flux d'air, retire la bande (15) de l'étoffe de façonnage (9) et la transmet à l'étoffe d'impression (25) sans la comprimer excessivement. Des dispositifs de nettoyage (41, 43, 45) ainsi qu'un dispositif (47) servant à drainer l'eau de la structure d'impression (25) avant qu'elle n'atteigne le dispositif leveur (23), maintiennent celle-ci en condition propre et sèche. De plus, des dispositifs générant un courant d'air (35, 37, 39) sont conçus pour enlever l'eau du rouleau de papier (15) en faisant circuler de l'air à température ambiante au travers de celui-ci. Ces dispositifs possèdent une capacité suffisante pour élever la teneur du rouleau en solides secs à au moins 25 % avant que celui-ci n'atteigne le sécheur frictionneur (29). Si on le souhaite, on peut transformer la machine à papier en machine traditionnelle de fabrication de papier crêpé, facilement et rapidement, en remplaçant l'étoffe d'impression (25) par un feutre leveur.
EP91919037A 1990-04-24 1991-04-18 Machine a papier pour la fabrication de papier crepe tendre a haut indice de bouffant Expired - Lifetime EP0526592B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9001468 1990-04-24
SE9001468A SE466063B (sv) 1990-04-24 1990-04-24 Pappersmaskin foer framstaellning av mjukpapper med hoeg bulk
PCT/SE1991/000275 WO1991016493A1 (fr) 1990-04-24 1991-04-18 Machine a papier pour la fabrication de papier crepe tendre a haut indice de bouffant

Publications (2)

Publication Number Publication Date
EP0526592A1 true EP0526592A1 (fr) 1993-02-10
EP0526592B1 EP0526592B1 (fr) 1995-04-05

Family

ID=20379274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91919037A Expired - Lifetime EP0526592B1 (fr) 1990-04-24 1991-04-18 Machine a papier pour la fabrication de papier crepe tendre a haut indice de bouffant

Country Status (8)

Country Link
EP (1) EP0526592B1 (fr)
JP (2) JP3698718B2 (fr)
AT (1) ATE120818T1 (fr)
CA (1) CA2078877C (fr)
DE (1) DE69108720T2 (fr)
FI (1) FI113286B (fr)
SE (1) SE466063B (fr)
WO (1) WO1991016493A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6398916B1 (en) 1999-12-16 2002-06-04 Valmet Karlstad Ab Simplified through-air drying paper making machine having a twin wire forming section
US6423186B1 (en) 1993-12-20 2002-07-23 The Procter & Gamble Company Apparatus and process for making structured paper and structured paper produced thereby
US6451171B1 (en) 2000-12-13 2002-09-17 Metso Paper Karlstad Ab Fabric dewatering device and method
US6540880B1 (en) 1998-03-17 2003-04-01 The Procter & Gamble Company Apparatus and process for making structured paper and structured paper produced thereby
KR20100092959A (ko) 2007-11-20 2010-08-23 알바니 인터내셔널 코포레이션 하이 벌크 주름화장지 웹을 제조하기 위한 조직화 벨트, 프레스 구간, 화장지 제지기 및 그 제조방법

Families Citing this family (14)

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Publication number Priority date Publication date Assignee Title
SE470134B (sv) * 1992-04-23 1993-11-15 Valmet Karlstad Ab Sätt att bygga om en konventionell tissuemaskin till en TAD- maskin, samt en därvid lämplig dubbelviraformare av "C-wrap"- typ
FI88630C (fi) * 1992-06-08 1993-06-10 Valmet Paper Machinery Inc Foerfarande och anordning foer att effektivera funktionen av ett yankeepressparti i en mjukpappersmaskin
US6547924B2 (en) 1998-03-20 2003-04-15 Metso Paper Karlstad Ab Paper machine for and method of manufacturing textured soft paper
SE511736C2 (sv) 1998-03-20 1999-11-15 Nordiskafilt Ab Albany Präglingsband för en pappersmaskin
US6287426B1 (en) 1998-09-09 2001-09-11 Valmet-Karlstad Ab Paper machine for manufacturing structured soft paper
SE512808C2 (sv) * 1998-09-09 2000-05-15 Valmet Karlstad Ab Pappersmaskin och sätt för framställning av strukturerat mjukpapper
DE10020666A1 (de) * 2000-04-27 2001-10-31 Voith Paper Patent Gmbh Doppelsiebformer
US7056572B1 (en) † 2000-10-05 2006-06-06 Kimberly-Clark Worldwide, Inc. Thin, soft bath tissue having a bulky feel
US6808600B2 (en) 2002-11-08 2004-10-26 Kimberly-Clark Worldwide, Inc. Method for enhancing the softness of paper-based products
JP4733569B2 (ja) * 2006-05-31 2011-07-27 大王製紙株式会社 連続洗浄装置及びこれを用いた連続洗浄方法
JP2008001998A (ja) * 2006-06-20 2008-01-10 Ichikawa Co Ltd 抄紙用フェルトの洗浄剤及び洗浄方法
JP5015539B2 (ja) * 2006-09-28 2012-08-29 株式会社メンテック 抄紙機の汚染防止方法
SE543948C2 (en) * 2020-09-04 2021-10-05 Valmet Oy Crescent former for producing tissue paper
CN116876250B (zh) * 2023-07-07 2024-05-17 浙江金龙再生资源科技股份有限公司 一种提高松厚度的无露底灰纸板生产装置及其工艺

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI770610A (fi) * 1977-02-24 1978-08-25 Valmet Oy Tissuepappersmaskin

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9116493A1 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6423186B1 (en) 1993-12-20 2002-07-23 The Procter & Gamble Company Apparatus and process for making structured paper and structured paper produced thereby
US6540880B1 (en) 1998-03-17 2003-04-01 The Procter & Gamble Company Apparatus and process for making structured paper and structured paper produced thereby
US6398916B1 (en) 1999-12-16 2002-06-04 Valmet Karlstad Ab Simplified through-air drying paper making machine having a twin wire forming section
US6451171B1 (en) 2000-12-13 2002-09-17 Metso Paper Karlstad Ab Fabric dewatering device and method
KR20100092959A (ko) 2007-11-20 2010-08-23 알바니 인터내셔널 코포레이션 하이 벌크 주름화장지 웹을 제조하기 위한 조직화 벨트, 프레스 구간, 화장지 제지기 및 그 제조방법

Also Published As

Publication number Publication date
CA2078877C (fr) 2000-06-06
SE9001468L (sv) 1991-10-25
JP2005273132A (ja) 2005-10-06
EP0526592B1 (fr) 1995-04-05
DE69108720T2 (de) 1995-10-26
JPH05507129A (ja) 1993-10-14
FI924290A0 (fi) 1992-09-24
DE69108720D1 (de) 1995-05-11
FI924290A (fi) 1992-09-24
JP3725896B2 (ja) 2005-12-14
JP3698718B2 (ja) 2005-09-21
FI113286B (fi) 2004-03-31
ATE120818T1 (de) 1995-04-15
WO1991016493A1 (fr) 1991-10-31
CA2078877A1 (fr) 1991-10-25
SE466063B (sv) 1991-12-09
SE9001468D0 (sv) 1990-04-24

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