CN101429738A - Device for producing material web - Google Patents
Device for producing material web Download PDFInfo
- Publication number
- CN101429738A CN101429738A CNA2008101744210A CN200810174421A CN101429738A CN 101429738 A CN101429738 A CN 101429738A CN A2008101744210 A CNA2008101744210 A CN A2008101744210A CN 200810174421 A CN200810174421 A CN 200810174421A CN 101429738 A CN101429738 A CN 101429738A
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- Prior art keywords
- width
- cloth material
- press
- drying
- calender
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- 239000000463 material Substances 0.000 title claims abstract description 185
- 238000001035 drying Methods 0.000 claims abstract description 109
- 238000000576 coating method Methods 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 21
- 239000004744 fabric Substances 0.000 claims description 107
- 210000000481 breast Anatomy 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 22
- 239000000725 suspension Substances 0.000 claims description 19
- 230000010349 pulsation Effects 0.000 claims description 18
- 238000005098 hot rolling Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000005498 polishing Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 230000006855 networking Effects 0.000 claims description 6
- 238000005507 spraying Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000835 fiber Substances 0.000 description 9
- 230000008093 supporting effect Effects 0.000 description 9
- 241001417494 Sciaenidae Species 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000005247 gettering Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
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Images
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
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/001—Wire-changing arrangements
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
- D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
- D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender
Landscapes
- Treatment Of Fiber Materials (AREA)
- Paper (AREA)
Abstract
The device for producing a material web comprises a headbox, a hybrid former, a press section comprising at least an extended nip, a dry part comprising at least one drying cylinder, an on-line coating portion, to which a non-coated web is guided and is coated through a contactless spray coating, an afterdrying portion, in which the coated web is dried by contactless dryers, an on-line ribbon calender, in which the web is polished in the nip calender between a metal band and a heated thermal roller, and an on-line winder, in which the web is rolled.
Description
Technical field
The present invention relates to a kind of device for producing material web, and a kind of method of using device for producing material web to produce width of cloth material.
Background technology
Device for producing material web relates to paper machine, board machine, toilet paper machine and Paper pulp machine.In this application, " single press (Einzelpresse) " of the press section of device for producing material web is interpreted as single nip in this application, and relative press element only forms a press. nips in described single nip.The press. nips of single press can be roll nip or wide nip.Be provided with the breast roll press on the contrary with single press, wherein breast roll constitutes press. nips respectively with at least two other rollers.The press. nips of breast roll press can be roll nip and/or wide nip.
In this application, " coated webs material " be interpreted as with any means and obtain certain coating on width of cloth material surface, for example surface cement, pigment or the coat of self.
At United States Patent (USP) 7,067, a kind of flow box has been described in 040, it is applicable to device for producing material web of the present invention.Flow box comprises material distribution system and nozzle pipe (Lippenkanal) (nozzle chambers), and it is online that fibrous suspension is reached shape by exporting to of described nozzle pipe, and wherein material flow enters outlet by distribution system.Flow box also has turbulent flow generator, and described turbulent flow generator extends in the space between distribution system and outlet.Turbulent flow generator comprises a plurality of first pipes, described first pipe all has first diameter and ends in the fluidization components respectively, described fluidization components is made up of annular wall, described annular wall extends to the inner surface of second pipe with circular cross-section always, and wherein this second pipe is aimed at coaxially with first pipe.The diameter of second pipe has the outlet side end greater than first pipe and second pipe, and nozzle pipe is led in described end.This nozzle pipe has thin slice (Lamelle), and the entrance side end of described thin slice is fixed on the outlet end of second pipe of turbulent flow generator.Vertically highly the most about 2mm that runner between turbulent flow generator and outlet has.
A kind of inverform (Hybridformer) that has short vertical wet end and connected pair of wet end in its Fig. 7 has been shown in patent documentation WO 2004/018768.Have the catchment of at least two adjacent settings in the beginning portion of two wet ends, described catchment is made of the water discharge member that is arranged on online loop inside.First catchment by non-pulsation (nichtpulsierend), slight bending, have opening the draining cover (
) constitute.Opening constitutes by the hole or along the groove that machine direction is extended, and it loads vacuum and width of cloth material is not had shock effect.Second catchment is made of the diaphragm seal lid (Leistendeckel) of loading vacuum lateral alignment, pulsation.
The press section that links to each other with drying section has been described in patent documentation WO 2005/068713.In its Fig. 3 a a kind of scheme has been shown, it is by the press section with single nip and have the horizontal baffling drier and the drying section of thereafter vertical baffling drier constitutes.Drum dried portion with networking guide member is positioned at after the vertical baffling drier.
A kind of method and apparatus that is used for coated paper web material or board web material has been described in patent documentation EP 856084.Realize coating with contactless injection coater unit, wherein do not have air ground coating pigment is injected on the width of cloth material surface with high pressure nozzle.Only, promptly do not use air for the atomizing of coating pigment by the interior compacting atomizing of coating pigment now of coating pigment.
A kind of method and apparatus that is used for the coating of dry paper has been described in patent documentation US 5,771,602.This equipment comprises first drying device, and described first drying device is arranged on first of paper web and goes up and hot blast blows on first of paper web; And second drying device, described second drying device is arranged on opposed to each other mutually with first drying device at least in part that second of paper web goes up and hot blast blows on second of paper web.This equipment also comprises the arrangement for deflecting that is arranged on first of the width of cloth material, described arrangement for deflecting along bending section vertically towards the first top blast hot blast of width of cloth material, make that the lip-deep width of cloth material at bending section need not to move contiguously with arrangement for deflecting.This equipment also comprises shared housing, so-called first drying device and arrangement for deflecting and described housing and environment are set under described housing isolates, also comprise the discharger that is connected setting with first drying device and arrangement for deflecting jointly, near the air first drying device and the arrangement for deflecting is discharged by described discharger.
A kind of belt calender has been described in patent documentation WO 03/064761.Metal tape by the guiding of guiding roller is advanced around pair roller (Gegenwalze) with great cornerite.Pair roller can be made up of non-warm-up mill or hot-rolling.Can be formed with the nip of special width between metal tape and pair roller, width of cloth material is advanced in described nip.Can adjust nip width and nip pressure by changing guiding roller position.The metal tape of calender is warming up to required temperature by heater.Nip width can be 30-3000mm in this kind calender, and nip pressure can be 50-400 degree centigrade for 0.01-200MPa and temperature.
In patent documentation US 5,251,835, a kind of coiling machine and method for coiling have been described.Described coiling machine comprises backing roll, and (be tambour, device Tambour) makes backing roll and machine rolls constitute nip, advances on machine rolls by described nip paper web also to be included in the position backing roll bar (Rollstange) that batches with respect to backing roll.Described coiling machine also comprise first the supporting and conveyer, by described first the supporting and conveyer batch the position support first tambour and with first tambour be transferred to the replacing platform (Wechselstation); And second supporting and conveyer, when first tambour is in when changing the position, described second supporting and ccontaining second tambour of conveyer also are transferred to second tambour and batch platform.First supporting and conveyer and second supporting and conveyer have a pair of skewer (Gabelpaar) respectively.Skewer in the every pair of skewer is bearing in and transmits on the rail, makes the skewer that is positioned at the machine rolls same side to cross one another, and promptly the strong point of skewer is with the axis direction setting of total each other spacing along the roller bar.
Described a kind of paper machine or board machine in patent application FI 20065577, it has inverform, is provided with the single press of wide nip, horizontal baffling drier, vertically baffling drier and drum dried portion.The vertical wet end of inverform has web plate, and described web plate has vacuum and two different drip chambers that communicate with each other of lid structure.The lid of first drip chamber has the hole, and described hole is arranged to can not produce pressure fluctuation, but allows the discharge pressure substantially constant.The lid of second drip chamber is configured with the drainpipe that relative machine direction is horizontal expansion, and described drainpipe produces pressure fluctuation that alternately changes along its direction and the water of removing the net bottom face.Two wet ends of inverform have discharge casing, and described discharge casing has three tactic each other suction chamber, and each suction chamber can apply the vacuum of desirable strength.First suction chamber is used for non-pulsating draining, and second suction chamber and the 3rd suction chamber are used for the pulsating draining.At on the March 21st, 2008 of disclosed patent application FI 20065577 just after the applyings date in the application, so it does not have the obstruction of novelty for the application.
Problem according to the device for producing material web of prior art is that it always is only applicable to the paper of particular types.Must construct suitable machine for every kind of paper, this causes the research and development expense very high.Because can't regain identical research and development and operating cost, constantly the stationery real price that descends makes the renewal of machine resources (Maschinenbestand) become difficult.
Summary of the invention
The objective of the invention is to, a kind of device for producing material web is provided, it is applicable to produces more kinds of dissimilar paper.
A kind of device for producing material web has been realized purpose of the present invention astoundingly, and it is made up of known parts and comprises:
Flow box, it is used for fibrous suspension is injected in page page or leaf of opening formation portion (Blattbildung) formation net (Blattbildungssieb) is forming net (Formiersieb);
Inverform, it has vertical wet end and the two wet ends adjacent with described vertical wet end, and described pair of wet end has at least one non-pulsation catchment and is positioned at pulsation catchment afterwards, described at least one non-pulsation catchment with at least one;
Press section, it has at least one wide nip, and uses closed width of cloth material guide member in described press section;
Drying section, it has at least one drying group, and described drying group has the networking guide member;
Online coating part (On-line-Streichpartie), the paper web that is not coated with are guided through described online coating part place, and width of cloth material to be coated is coated with by contactless injection in described online coating part;
Back drying section, the width of cloth material that has been coated with in the drying section of described back carries out drying by contactless suspension drying at least;
Online belt calender in described online belt calender, is carried out smooth in the calender nip of width of cloth material between metal tape and pair roller; And
Online coiling machine carries out batching of width of cloth material in described online coiling machine.
The present invention also provides a kind of method of using in device for producing material web, wherein: fibrous suspension is injected in page or leaf by flow box and opens and to form on the forming net of portion; In inverform, form width of cloth material by fibrous suspension, wherein inverform comprises vertical wet end and is positioned at described vertical wet end two wet ends afterwards, and described pair of wet end has at least one non-pulsation catchment and be positioned at pulsation catchment afterwards, described at least one non-pulsation catchment with at least one; Width of cloth material is squeezed and is used closed width of cloth material guide member in described press section at least one wide nip in press section; Width of cloth material is dried in the drying group that the networking guide member is worked at least one in drying section; Width of cloth material carries out press polish in the calender nip that is formed by metal tape and pair roller in online belt calender; And in online coiling machine, width of cloth material is batched.
By this device for producing material web, can be astoundingly with paper of the following at least kind of cheap material manufacturing and composition thereof:
Newsprint, i.e. journalism printing only comprises wood pulp or the material that replaced by fiber pulp of the wood pulp of 0-15% wherein usually.Paper weight is 35-50g/m
2In fact nearly all newsprint is all made by recyclable fiber.
SC, promptly the supercalendering uncoated paper comprises the wood pulp of 50-70%, the cellulose of 10-15% and the filler of 15-30% usually.Paper weight is 40-80g/m
2
LWC, promptly featherweight coated paper comprises the wood pulp of 40-60%, the cellulose of 25-40% and the filler of 20-35% usually.Paper weight is 40-80g/m
2
For weak material (schwache Stoffe), be interpreted as herein: comprise high-load or only comprise the material of one or more recyclable fibers, the material of making by the wood kind of the ultrashort fiber outside the Europe and the material of making by bamboo or grass, promptly so-called non-wood material.The fiber quality of recyclable material than former green material (
) poor.The fiber frangibility of recyclable material, and the recyclable material fiber that comprises per ton is less.Therefore the intensity property of the width of cloth material of being made by material a little less than this is poorer than what made by former green material.
Make and the investment cost lower to make paper web according to the solution of the present invention,, expenditure of construction and production cost are minimized because can form batch process (Serienproduktion) according to paper production line of the present invention than prior art.
Can when making the paper of all mentioned kinds, use the raw material more weak according to the solution of the present invention is also feasible than prior art.Can remain on acceptable level according to the operation stability of paper machine of the present invention and efficient when the weak raw material of processing.
According to the flow box that uses in the device for producing material web of the present invention needs special nature not.For example the flow box of describing in above-mentioned patent US 7,067,040 extremely is suitable for according to device for producing material web of the present invention.
Inverform has very big operation window and the different types of paper of very suitable thus manufacturing.Be arranged in the feasible multiple thickness that does not need extra width of cloth material conversion just to can be implemented in two barriers in non-pulsation catchment that two wet ends begin portion.The material that is applicable to different types of paper has widely different filtering feature.The material that is difficult to filter can not discharged a lot of water on vertical wet end; Accordingly, must on two wet ends, carry out forced-ventilated water.The former of describing in above-mentioned patent documentation WO 2004/018768 extremely is suitable for according to device for producing material web of the present invention.
Press section can be based on breast roll press or single press, and both all have closed width of cloth material guide member.In paper weight not simultaneously and weak material is being added man-hour, closed width of cloth material guide member is guaranteed excellent operation stability, because the tensile load (Zugbeanspruchung) that acts on the width of cloth material is less relatively when closure guiding width of cloth material.When using single nip list press, can produce width of cloth material coarse, porous, but this defective can overcome by being included in according to the metal belt calender in the device for producing material web of the present invention.In use can produce the problem of the two-sided difference of the width of cloth material outward appearance during heart roll squeezer, but this can eliminate by being included in according to the metal belt calender in the device for producing material web of the present invention.The press section of describing in above-mentioned patent documentation WO 2005/068713 based on single press extremely is suitable for according to device for producing material web of the present invention.
Drying section can be only based on cylinder drying or based on the combination of cylinder drying and baffling drying.The baffling drying can realize excellent operation stability and economy when special capacity and porous, this is particular importance when the weak material of processing.In addition, vertical baffling drier has been saved the space along machine direction.The drying section of describing in above-mentioned patent documentation WO 2005/068713 based on the baffling drier extremely is suitable for according to device for producing material web of the present invention.
When being coated with, also can realize excellent operation stability for the processing of weak material, because width of cloth material can not be subjected to haling the effect of stretching load with contactless injection coating process.When spraying coating, can regulate coating weight soon corresponding to different demands.Do not need for example roller of the member that rotates for this kind coating, make coating apparatus can be arranged on the top of machine and can realize less production line factory length.If coating apparatus is arranged on top, almost can save coating apparatus for the stationery that is not coated with.Based on the coating apparatus of injection method also than gently a lot of based on the coating apparatus of rotation roller.The injection coating process of describing in above-mentioned patent documentation EP 856084 extremely is suitable for according to device for producing material web of the present invention, and wherein spraying coating is not to be realized by no air nozzle.
The dry drying that also can be used for extra uncoated paper class (for example newsprint) in contactless back, thus and be used for over-drying SC-B paper and reduce gauffer.Contactless back drying also can be used for regulating batches, but and contactless quick adjustment air-dry can quick adjustment when changing classification to new regulated value.The contactless back drying device of describing in above-mentioned patent documentation US 5,771,602 extremely is suitable for according to device for producing material web of the present invention.
Belt calender is applicable to all kinds, because can regulate the time of staying and nip pressure by belt calender easily.By belt calender, can realize economy for the paper of all kinds when the specified vol, because when nip pressure is low and with the long time of staying, carry out press polish by the metal tape that heated.Belt calender as soft press-polishing machine is specially adapted to the smooth width of cloth material that comprises weak material, because the intensity of the fiber of weak material is very poor.In the belt calender that is configured with heating metal strip and hot-rolling, width of cloth material is applied heat effect, described heat effect is corresponding to the thermal efficiency of about four dryings, makes the drying of also carrying out width of cloth material in belt calender.The weight of belt calender is much smaller than traditional supercalender (Superkalander).Belt calender can be used as precalender (Vorkalander) or terminal calender (Endkalander) in the present invention.If belt calender is as precalender and production coating class product, soft press-polishing machine just be enough to be used in terminal smooth (
) width of cloth material that has been coated with.The belt calender of describing in above-mentioned patent documentation WO 03/064761 extremely is suitable for according to device for producing material web of the present invention.
The coiling machine that uses in device for producing material web according to the present invention not needs has special nature.For example, the coiling machine of describing in above-mentioned patent documentation US 5,251,835 extremely is suitable for according to device for producing material web of the present invention.
Device for producing material web according to the present invention is significantly shorter than and is lighter than the device for producing material web in the conventional art.Because paper machine is short and pedestal is lighter, has significantly reduced cost of investment.
Following with reference to the various embodiments of the invention of describing in the accompanying drawing, describe the present invention in detail, but the present invention in no case is subjected to the restriction of its details.
Description of drawings
Fig. 1 shows and is applicable to the schematic diagram of opening formation portion according to the page or leaf of device for producing material web of the present invention;
Fig. 2 shows and is applicable to according to the schematic diagram of the press section of device for producing material web of the present invention and based on the schematic diagram that is positioned at the leading section after the press section of the drying section of cylinder drying;
Fig. 3 shows the schematic diagram of the modification of scheme shown in Figure 2, and wherein drying section begins with the baffling drier herein, and the drying group is connected to the baffling drier;
Fig. 4 shows the schematic diagram that is applicable to according to the another kind of press section of device for producing material web of the present invention, and the drying section among Fig. 2 is connected to press section;
Fig. 5 shows and is applicable to according to the coating part of device for producing material web of the present invention and the schematic diagram of back drying section;
Fig. 6 shows and is applicable to according to the calender of device for producing material web of the present invention and the schematic diagram of coiling machine;
Fig. 7 shows the schematic diagram of optional embodiment of the present invention, and wherein belt calender is arranged on before the coating part; And
Fig. 8 shows the terminal calender that is positioned at after the coating part shown in Figure 7 and the schematic diagram of coiling machine.
The specific embodiment
Fig. 1 shows and is applicable to the schematic diagram of opening formation portion according to the page or leaf of device for producing material web of the present invention.Page or leaf is opened formation portion 100 and is comprised flow box 101; Off line (Untersieb) 110, described off line 110 by breast roll (Brustwalze) 111, vacuum furnace (Saugwalze) 112, deflection roll 113 and the guiding of guiding roller and formation closed circuit (Endlosschlaufe); And surf the Net 120, described online 120 is by first roller 121, second roller 122 and the guiding of guiding roller and constitute second closed circuit.Off line 110 and online 120 constitute two wet ends together, by the off line 110 vertical wet ends that constitute before described pair of wet end.Fibrous suspension is injected on off line 110 from flow box 101, by water discharge member 115,116 water is discharged downwards by off line 110 on the vertical wet end of suspension.Be provided with in the online loop in the beginning portion of two wet ends and have drainage arrangement 130 crooked lid, vacuum action, described drainage arrangement 130 is towards the surface guiding online 120 that is positioned at the fibre suspension layers on off line 110.
In the back of drainage arrangement 130, in off line 110, be provided with and transmit gettering container 116, guarantee that by described transmission gettering container 116 width of cloth material W follows off line 110 in online arbitrarily 120 with off line 110 stages of separating.Back at two wet ends also is provided with vertical wet end, on described vertical wet end width of cloth material W by water discharge member 116 by off line 110 downward drainings.End at vertical wet end is provided with vacuum furnace 112, and the direction deflection by described vacuum furnace 112 width of cloth material W are tilted to lower edge deflection roll 113 begins revolution at described deflection roll 113 places off line 110.
Fig. 2 shows and is applicable to according to the schematic diagram of the press section of device for producing material web of the present invention and based on the schematic diagram that is positioned at the leading section after the press section of the drying section of cylinder drying.Press section is based on the breast roll press, and in described breast roll press, first conveyer belt 240 is advanced around breast roll 214.To be take-off location P at receiving position transitted to by forming net 110 and pick up blanket 210 by picking up vacuum furnace 211 width of cloth material W.Back at take-off location P, width of cloth material W at first is crushed on the bottom surface of picking up blanket 210 that is absorbed with water and is directed among the precompressed nip NO that is formed in the breast roll press in straight mode of advancing in the basic plane in level picking up blanket 210 and be absorbed with between the precompressed lower felt 220 of water subsequently, and described precompressed nip NO is made up of two blanket roll nip.The top roll of precompressed nip NO is made of suction press roll 213, and lower roll is made of the pony press 212 of moulding.In the back of precompressed nip NO, width of cloth material W remains on the outer surface that picks up blanket 210 by the vacuum in the vacuum zone effect of suction press roll 213 and is directed among the first nip N1 of breast roll press, and the described first nip N1 is made of single blanket roll nip.The lower roll of the first nip N1 is by the suction press roll 213 as top roll constitutes at precompressed nip NO place, and breast roll 214 is as top roll.In the back of the first nip N1 of breast roll press, be positioned at the second nip NP1 that constitutes by the wide nip of single blanket that width of cloth material W on the outer surface of first conveyer belt 240 of advancing around breast roll 214 arrives the breast roll press.Breast roll 214 is as the lower roll of the second nip NP1 of breast roll press, the first wide nip roll (Breitnipwalze) 215 that is made of pliable and tough pipe box (Schlauchmantel) is used as top roll, can be arranged on described pipe box inside by the press shoe (Pressschuh) of hydraulic medium load, by described press shoe be provided at first glazing felt 230 and the outside of first conveyer belt 240 of advancing around breast roll 214 between the width of cloth material W that advances go up essential pressure.The second nip NP1 of breast roll constitutes the first wide nip of press section thus.
In the back of the second nip NP1 of breast roll, the width of cloth material W on the outer surface of first conveyer belt 240 that will advance around breast roll 214 is directed to the outer surface and the first first crossover position S1 that transmits between the vacuum furnace 330 at first conveyer belt 240.First dry net (Trockensieb) 310 transmits vacuum furnace 330 around first and advances.At the first first crossover position S1 place that transmits in the vacuum zone of vacuum furnace 330, width of cloth material W is crushed on supporting on the outer surface of first dry net 310 and by first dry net 310 and is transferred to the first dry R1 of group.Comprise in company with the first dry group R1 of networking guide member work and to be arranged on above-listed drying 311,312,313 and to be arranged on following vacuum deflection roll 321,322.Width of cloth material W is transitted on second dry net 320 by last drying 313 of the first dry group R1.The number of the drying group of drying section is 1 to N, and wherein N is a positive integer.
Fig. 3 shows the schematic diagram of the modification of scheme shown in Figure 2, and wherein drying section begins with the baffling drier herein, and the drying group is connected to the baffling drier.Press section based on the breast roll press shown in Figure 3, this press section is fully corresponding to press section shown in Figure 2.In the back of the second nip NP1 of breast roll press, width of cloth material W is transferred to the first crossover position S1 by first conveyer belt 240 of advancing around breast roll 214.At the first crossover position S1 place, transmit width of cloth material W in the vacuum zone of vacuum furnace 251 first and be crushed on first and shift on the outer surface of net 250 and shift net by first and supporting and be transferred to the second crossover position S2.At the second crossover position S2 place, the width of cloth material W in shifting the vacuum zone of vacuum furnace 341 is crushed on the outer surface of dry net 340 of the first drying unit D1 and is being supported by this dry net 340 subsequently and passing the first drying unit D1.In the first drying unit D1, width of cloth material W is dry in the baffling drier 345 of basic horizontal.In this drier 345, because vacuum component 343 (for example gettering container 343) and guiding roller 344 (preferably constituting), cause width of cloth material straight or advance agley by vacuum furnace or by so-called rolling roller (Scheibenwalze) with deep trouth.
In the back of the first drying unit D1, width of cloth material W enters the dry net 90 of the second drying unit D2 at the 3rd crossover position S3.The 3rd crossover position S3 is between the dry net 350 of the guiding roller 342 of the dry net 340 of the first drying unit D1 and the second drying unit D2.In the second drying unit D2, in vertical substantially baffling drier 355,356, finish the drying of width of cloth material W.In the dry net loop 350 of the second drying unit D2, be provided with vacuum component (for example gettering container 353) and guiding roller (preferably constitute and make the width of cloth material W straight or advance agley) by vacuum furnace or by so-called rolling roller with deep trouth.
In the back of the second drying unit D2, width of cloth material W is led on the surface of first drying 361 by the dry net 350 of the second drying unit D2.Width of cloth material arrives on the dry net 360 of the first drying group from this first drying 361.The number of the drying group of drying section is 1 to N, and wherein N is a positive integer.
Fig. 4 shows the schematic diagram that is applicable to according to another press section of device for producing material web of the present invention, and the drying section among Fig. 2 is connected to this press section.Press section 200 comprises single press herein.To be take-off location P at receiving position pick up blanket 210 by picking up vacuum furnace 211 by what forming net 110 transitted to press section to width of cloth material W.Back at take-off location P, width of cloth material W at first is crushed on the bottom surface of picking up blanket 210 that is absorbed with water and is directed among the nip NP1 in straight mode of advancing in the basic plane in level picking up blanket 210 and be absorbed with between the squeezing lower felt 220 of water subsequently, and described nip NP1 is made up of the wide nip of two blankets.In the back of wide nip NP1, be led to the first crossover position S1 at the width of cloth material W that picks up between blanket 210 and the lower felt 220, this is in first width of cloth material W that transmits in the vacuum zone of vacuum furnace 218 and is crushed on the lower felt 220.After this, width of cloth material W by lower felt 220 supportings is transferred into the second crossover position S2, this is in second and transmits width of cloth material W in the vacuum zone of vacuum furnace 251 and be led to first and shift on the net 250, and width of cloth material W shifts net 250 by described first and is transferred to the 3rd crossover position S3.Drying section that connects with described crossover position S3 and scheme shown in Figure 3 are corresponding.
Fig. 5 shows and is applicable to according to the coating part of device for producing material web of the present invention and the schematic diagram of back drying section.Coating part 400 comprises the injection coater unit 410 that is arranged on machine top, in described injection coater unit 410, is coated with by the one or both sides of contactless injection coating to width of cloth material.Back drying section 500 is positioned at after the coating part 400, and in the drying section 500 of described back, width of cloth material carries out drying by cylinder drying part 520 in suspension drier 510, and wherein width of cloth material W is pressed on the surface of drying 521 by dry net 522.Process velocity is higher when producing the product of non-coating class, makes back drying section 500 also can be used for the width of cloth material W of dry non-coating as required.When producing non-coating class product, width of cloth material W is only by back drying section 500, and need not to carry out the dry run of very important (nennenswert).
Fig. 6 shows and is applicable to according to the calender of device for producing material web of the present invention and the schematic diagram of coiling machine.Calender 600 is made of belt calender, is wherein advanced on pair roller 611 with very big wrap angle sigma by the metal tape 610 of guiding roller 612,613,614 guidings.Metal tape 610 is by heater 620 heating, and pair roller 611 is made of hot-rolling.Width of cloth material W advances in calender nip Nk, and described calender nip Nk is made of the surface of metal tape 610 that heated and level and smooth hot-rolling 611, and is adjusted in the nip pressure that acts among the calender nip Nk by the guiding roller of regulating below two 612,613.Can also increase or reduce the tension force of metal tape 610 by regulating top guiding roller 614, wherein the pressure that acts in calender nip Nk also can change.The controllability of representing to guide roller 612,613,614 by four-headed arrow.In coiling machine 800, width of cloth material is advanced by being arrived on the machine rolls 812 of generation with the coiling gap Nr that the machine rolls 812 that produces constitutes by backing roll 811.
Fig. 7 shows the schematic diagram of optional embodiment of the present invention, and wherein belt calender is arranged on before the coating part.Wherein, the width of cloth material W that is fabricated to the coating class product carries out precompressed light before coating.For non-coating class product, belt calender is as the terminal calender.After drying section width of cloth material W is guided among the belt precalender 600a, described belt precalender 600a conforms to as the belt calender 600 shown in the terminal calender in all fields with in Fig. 6.The metal tape 610a of belt precalender 600a guides around pair roller 611a with very big wrap angle sigma via the deflection of guiding roller 612a, 613a, 614a.Metal tape 610a is by heater 620a heating, and pair roller 611a is made of hot-rolling.Width of cloth material W advances in calender nip Nk, and described calender nip Nk is made of the surface of metal tape 610a that heated and level and smooth hot-rolling 611a.Be provided with contactless injection coating part shown in Figure 5 400 and back drying section 500 after belt precalender 600a, back drying section 500 comprises suspension drier 510 and cylinder drying portion 520.
Fig. 8 shows the terminal calender that is positioned at after coating part shown in Figure 7 and the connected back drying section and the schematic diagram of coiling machine.The soft press-polishing machine that has two nip N1, N2 herein is as terminal calender 700.The first calender nip N1 is formed between the first following hot-rolling 711 and the top first soft roller 712, and the second calender nip N2 forms between superincumbent second hot-rolling 721 and the following second soft roller 722.In this way, the two sides of width of cloth material W is flattened on hot-rolling.Be provided with coiling machine 800 after soft press-polishing machine 700, described coiling machine 800 conforms to coiling machine shown in Figure 6.
In the content shown in Fig. 6, belt calender 600 is single calenders of device for producing material web, and is applicable to the paper of making above-mentioned all kinds, i.e. newsprint, SC and LWC.
In the content shown in Fig. 7 and Fig. 8, belt calender 600a is as precalender, and soft press-polishing machine 700 is used as the terminal calender, and it is equally applicable to make the paper of above-mentioned all kinds, i.e. newsprint, SC and LWC.When making non-coating class product, can save as the soft press-polishing machine 700 of terminal calender or use opening nip N1, N2.
Various details of the present invention can change in the scope of the spirit of the present invention that claims limited, and is different from the above-mentioned embodiment of example that only is.
Claims (25)
1. device for producing material web comprises:
Flow box (101), it is used for fibrous suspension is injected in the forming net (110) that page or leaf is opened formation portion;
Inverform (100), it has vertical wet end and the two wet ends adjacent with described vertical wet end, the described pair of wet end has at least one non-pulsation catchment (131) and at least one is positioned at pulsation catchment (132,133) afterwards, described at least one non-pulsation catchment (131);
Press section (200), it has at least one wide nip (NP1), and in described press section (200) width of cloth material (W) is used closed guide member;
Drying section (300), it has at least one drying group (R1), and described drying group (R1) has the networking guide member;
Online coating part (400), the width of cloth material (W) that is not coated with is guided through described online coating part (400), and width of cloth material (W) to be coated is coated with by contactless injection in described online coating part (400);
Back drying section (500), the width of cloth material (W) that has been coated with in described back drying section (500) carries out drying by contactless suspension drier (510) at least;
Online belt calender (600,600a), described online belt calender (600,600a) in, width of cloth material (W) metal tape (610,610a) with pair roller (611,611a) carry out in the calender nip (Nk) between smooth; And
Online coiling machine (800) carries out batching of width of cloth material (W) in described online coiling machine (800).
2. device for producing material web as claimed in claim 1 is characterized in that, described online belt calender (600,600a) have heater (620,620a), by described heater (620,620a) to described calender (600, metal tape 600a) (610,610a) heat.
3. device for producing material web as claimed in claim 1 or 2 is characterized in that, described online belt calender (600, and pair roller 600a) (611,611a) be the hot-rolling that heated.
4. as each described device for producing material web in the claim 1 to 3, it is characterized in that described online belt calender (600) is used as the terminal calender and is positioned between described back drying section (500) and the described online coiling machine (800).
5. as each described device for producing material web in the claim 1 to 3, it is characterized in that, described online belt calender (600a) as precalender and be positioned at described drying section (300) and described coating part (400) between.
6. device for producing material web as claimed in claim 5, it is characterized in that, described device for producing material web also is included in the soft press-polishing machine (700) between described back drying section (500) and the described online coiling machine (800), described soft press-polishing machine (700) has two nips, and (N1 is N2) and as the on-line terminal calender.
7. as each described device for producing material web in the claim 1 to 6, it is characterized in that the front portion of described drying section (300) has: horizontal baffling drier (D1), width of cloth material (W) is straight or advance agley in described horizontal baffling drier (D1); The vertical baffling drier (D2) that is connected with described horizontal baffling drier (D1), width of cloth material (W) is straight or advance agley in described vertical baffling drier (D2); And at least one is positioned at described vertical baffling drier (D2) drying group (R1) afterwards.
8. as each described device for producing material web in the claim 1 to 6, it is characterized in that described drying section (300) only is made of drying group (R1).
9. as each described device for producing material web in the claim 1 to 8, it is characterized in that described back drying section (500) has drying group (520) afterwards at described contactless suspension drier (510).
10. as each described device for producing material web in the claim 1 to 9, it is characterized in that, described press section (200) comprises the breast roll press, in described breast roll press, breast roll (214) forms first single blanket (210) nip (N1) with suction press roll (213), and described breast roll (214) forms the second wide nip of single blanket (230) (NP1) with wide nip roll (215), and conveyer belt loop (240) is advanced around the breast roll (214) of described breast roll press, described width of cloth material (W) is sent to first crossover position (S1) by described conveyer belt loop (240) by described breast roll (214), and the mode with closed draw is guided into described drying section (300) via transfer net (250) or direct earth mat with described width of cloth material (W) from here.
11. as each described device for producing material web in the claim 1 to 9, it is characterized in that described press section comprises single press, in described single press, between two pressure roller (216,217), form two wide nips of blanket (210,220) (NP1).
12. as each described device for producing material web in the claim 1 to 11, it is characterized in that, described coating part (400) comprises jet foundation applicator (410), use airfree high pressure nozzle in described jet foundation applicator (410), what make that single-nozzle only covers described width of cloth material (W) is the width of horizontal part with respect to machine direction.
13. a method of using device for producing material web to produce width of cloth material, wherein:
Fibrous suspension is injected in page or leaf by flow box (101) and opens and to form on the forming net (110) of portion;
In inverform (100), form width of cloth material (W) by fibrous suspension, wherein said inverform (100) comprises vertical wet end and is positioned at described vertical wet end two wet ends afterwards, the described pair of wet end has at least one non-pulsation catchment (131) and at least one is positioned at pulsation catchment (132,133) afterwards, described at least one non-pulsation catchment (131);
In at least one wide nip (NP1), squeezed and in described press section (200), used closed width of cloth material guide member at width of cloth material (W) described in the press section (200);
Be dried in the drying group (R1) that at least one is worked with the networking guide member at width of cloth material (W) described in the drying section (300);
Online belt calender (600,600a) described in width of cloth material (W) by metal tape (610,610a) and pair roller (611,611a) carry out press polish in the calender nip of Xing Chenging; And
In online coiling machine, described width of cloth material (W) is batched.
14. method as claimed in claim 13 is characterized in that, described online belt calender (600, described metal tape 600a) (610,610a) heater (620, heat in 620a).
15., it is characterized in that the hot-rolling that heated is as pair roller (711) as claim 13 or 14 described methods in described online belt calender (700).
16. method as claimed in claim 15 is characterized in that, described belt calender (600) is as the terminal calender that is arranged between back drying section (500) and the described online coiling machine (800).
17. method as claimed in claim 15 is characterized in that, described belt calender (600) is as the precalender that is arranged between described drying section (300) and the coating part (400).
18. method as claimed in claim 17 is characterized in that, described width of cloth material (W) is in that (N1 carries out press polish in the on-line terminal calender (700) that N2) soft press-polishing machine constitutes by having two nips.
19. as each described method in the claim 13 to 18, it is characterized in that, described width of cloth material (W) carries out drying in the front portion of described drying section (300) in horizontal baffling drier (D1) and vertical baffling drier (D2), described width of cloth material (W) is straight or advance agley in described horizontal baffling drier (D1) and vertical baffling drier (D2), and described width of cloth material (W) also is arranged in described vertical baffling drier (D2) drying group (R1) afterwards at least one and carries out drying.
20., it is characterized in that described width of cloth material (W) carries out drying as each described method in the claim 13 to 18 in the drying section (300) that only is made of drying group (R1).
21. as each described method in the claim 13 to 20, it is characterized in that, described width of cloth material (W) squeezes in the press section (200) based on the breast roll press, the described width of cloth material of guiding (W) is by first single blanket (210) nip (N1) that is formed by breast roll (214) and suction press roll (213) and the second wide nip of single blanket (230) (NP1) that is formed by described breast roll (214) and wide nip roll (215) in described press section (200), breast roll (214) around described breast roll press forms conveyer belt loop (240), described thus width of cloth material (W) is sent to first crossover position (S1) by described breast roll (214), from here with the width of cloth material guide mode of closure via shifting net (250) or directly described width of cloth material (W) being guided into described drying section (300).
22. as each described method in the claim 13 to 20, it is characterized in that, described width of cloth material (W) squeezes in the press section (200) based on single press, the described width of cloth material of guiding (W) passes through at two pressure roller (216 in described press section (200), 217) the wide nips of two blankets (210,220) (NP1) that form between.
23. as each described method in the claim 13 to 22, it is characterized in that, in described coating part (400), be coated with by at least one side of contactless online injection coating to described width of cloth material (W).
24. method as claimed in claim 23, it is characterized in that, by jet foundation applicator (410) described width of cloth material (W) is coated with, in described jet foundation applicator (410), use airfree high pressure nozzle, make single-nozzle only cover the width along the part of machine direction of described width of cloth material (W).
25., it is characterized in that described width of cloth material (W) carries out the back drying by contactless suspension drier (510) and cylinder drying part (520) as claim 23 or 24 described methods in described back drying section (500).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20075783 | 2007-11-05 | ||
| FI20075783A FI20075783L (en) | 2007-11-05 | 2007-11-05 | Track forming machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101429738A true CN101429738A (en) | 2009-05-13 |
| CN101429738B CN101429738B (en) | 2012-05-23 |
Family
ID=38786714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101744210A Expired - Fee Related CN101429738B (en) | 2007-11-05 | 2008-11-05 | Device for producing material web |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101429738B (en) |
| DE (1) | DE102008052162A1 (en) |
| FI (1) | FI20075783L (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102182105A (en) * | 2011-05-07 | 2011-09-14 | 山东世纪阳光纸业集团有限公司 | Four-stacked net forming equipment and method for producing coating kraft liner board |
| CN102182106A (en) * | 2011-05-07 | 2011-09-14 | 昌乐新迈纸业有限公司 | Equipment and method for producing coating surface bleached kraft liner board |
| CN102182103A (en) * | 2011-05-07 | 2011-09-14 | 昌乐新迈纸业有限公司 | Triple net forming equipment for producing coated white kraft and production method |
| CN102182107A (en) * | 2011-05-07 | 2011-09-14 | 山东世纪阳光纸业集团有限公司 | Overlapped four-net forming equipment and method for producing coated craft paper |
| CN102182108A (en) * | 2011-05-07 | 2011-09-14 | 昌乐新迈纸业有限公司 | Three-stacked net forming equipment and method for producing coating surface bleached kraft liner board |
| CN102182102A (en) * | 2011-05-07 | 2011-09-14 | 山东世纪阳光纸业集团有限公司 | Overlapped three-net forming equipment and method for producing coated craft paper |
| CN102312389A (en) * | 2010-06-30 | 2012-01-11 | 美卓造纸机械公司 | Administer the curling method of fiber web and the drying section of fiber web machine |
| CN107460764A (en) * | 2017-09-13 | 2017-12-12 | 长兴恒大电子材料有限公司 | A kind of high-quality paper web paper technology |
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| JP4901395B2 (en) * | 2006-09-26 | 2012-03-21 | 富士フイルム株式会社 | Drying method of coating film |
| DE202008016078U1 (en) | 2008-12-04 | 2009-04-02 | Metso Paper, Inc. | Device for producing a material web, in particular a paper or board web |
| DE102012213026A1 (en) * | 2012-07-25 | 2014-01-30 | Voith Patent Gmbh | Device for treating moving paper, cardboard or other fibrous web, comprises applicator unit for applying application medium comprising e.g. glue and starch, coating unit for single-sided or double-sided coating, and pair of press rolls |
| CN110612370B (en) * | 2017-05-10 | 2022-01-28 | 福伊特专利有限公司 | Production device and method for producing a fibrous web |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI91383C (en) | 1990-10-26 | 1997-01-22 | Valmet Paper Machinery Inc | Method of winding |
| FI108061B (en) | 1995-10-05 | 2001-11-15 | Metso Paper Inc | Method for coating a paper or cardboard web |
| FI98944C (en) | 1995-10-25 | 1997-09-10 | Valmet Corp | Method and apparatus for drying the coating of a paper web or equivalent |
| FI117292B (en) | 2000-06-13 | 2006-08-31 | Metso Paper Inc | Headbox of a paper machine or similar |
| CN100371529C (en) | 2002-01-29 | 2008-02-27 | 梅特索纸业有限公司 | Processing device and method of operating the device for processing a coated or uncoated fibrous web |
| US7364643B2 (en) | 2002-08-23 | 2008-04-29 | Metso Paper, Inc. | Forming of a paper or board web in a twin-wire former or in a twin-wire section of a former |
| FI124698B (en) | 2004-01-15 | 2014-12-15 | Valmet Technologies Inc | Arrangement in a paper machine |
| FI120747B (en) | 2006-09-21 | 2010-02-15 | Metso Paper Inc | Paper or cardboard machine |
-
2007
- 2007-11-05 FI FI20075783A patent/FI20075783L/en not_active Application Discontinuation
-
2008
- 2008-10-31 DE DE102008052162A patent/DE102008052162A1/en not_active Withdrawn
- 2008-11-05 CN CN2008101744210A patent/CN101429738B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102312389A (en) * | 2010-06-30 | 2012-01-11 | 美卓造纸机械公司 | Administer the curling method of fiber web and the drying section of fiber web machine |
| CN102312389B (en) * | 2010-06-30 | 2014-09-03 | 维美德技术有限公司 | Method for treating curling of fiber web and drying part for fiber web machine |
| CN102182105A (en) * | 2011-05-07 | 2011-09-14 | 山东世纪阳光纸业集团有限公司 | Four-stacked net forming equipment and method for producing coating kraft liner board |
| CN102182106A (en) * | 2011-05-07 | 2011-09-14 | 昌乐新迈纸业有限公司 | Equipment and method for producing coating surface bleached kraft liner board |
| CN102182103A (en) * | 2011-05-07 | 2011-09-14 | 昌乐新迈纸业有限公司 | Triple net forming equipment for producing coated white kraft and production method |
| CN102182107A (en) * | 2011-05-07 | 2011-09-14 | 山东世纪阳光纸业集团有限公司 | Overlapped four-net forming equipment and method for producing coated craft paper |
| CN102182108A (en) * | 2011-05-07 | 2011-09-14 | 昌乐新迈纸业有限公司 | Three-stacked net forming equipment and method for producing coating surface bleached kraft liner board |
| CN102182102A (en) * | 2011-05-07 | 2011-09-14 | 山东世纪阳光纸业集团有限公司 | Overlapped three-net forming equipment and method for producing coated craft paper |
| CN107460764A (en) * | 2017-09-13 | 2017-12-12 | 长兴恒大电子材料有限公司 | A kind of high-quality paper web paper technology |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008052162A1 (en) | 2009-05-07 |
| FI20075783L (en) | 2009-05-06 |
| FI20075783A0 (en) | 2007-11-05 |
| CN101429738B (en) | 2012-05-23 |
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