CN1231007A - Method for drying surface-treated paper web or equivalent in after-dryer of paper machine and after-drying carrying out the method in paper machine - Google Patents
Method for drying surface-treated paper web or equivalent in after-dryer of paper machine and after-drying carrying out the method in paper machine Download PDFInfo
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- CN1231007A CN1231007A CN 97198086 CN97198086A CN1231007A CN 1231007 A CN1231007 A CN 1231007A CN 97198086 CN97198086 CN 97198086 CN 97198086 A CN97198086 A CN 97198086A CN 1231007 A CN1231007 A CN 1231007A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
- D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
- D21F5/044—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices using air hoods over the cylinders
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
- D21F5/048—Drying on cylinders on two or more drying cylinders in combination with other heating means
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/009—Apparatus for glaze-coating paper webs
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Abstract
The invention concerns a method for drying a surface-treated paper web or equivalent in an after-dryer of a paper machine, in which method the paper web (W) is first finished in a finishing section, in which finishing section the paper web (W) is surface-sized or coated by means of a finishing device (10), after which the paper web (W) is dried. In the after-dryer the paper web (W) is dried in at least one dryer group that makes use of single-wire draw, and that, at the same time, the paper web (W) is dried by means of an impingement-drying equipment (25) fitted in connection with at least one cylinder or roll (23, 24) in said dryer group. Further, the invention concerns an after-dryer for a paper machine for applying the method to the drying of a surface-treated paper web or equivalent, which after-dryer is placed after the finishing device (10), by means of which finishing device (10) the paper web (W) is surface-sized or coated. The after-dryer comprises at least one dryer group that applies single-wire draw, and an impingement-drying equipment (25) is fitted in connection with at least one cylinder or roll (23, 24) in said dryer group.
Description
The present invention relates to a kind of paper web drying surface-treated in the drying cylinder of the rear portion of paper machine or the method for analog, in the method, paper web at first in a finishing workshop section by ornamenting, in this finishing workshop section, paper web by an ornamenting device with its top sizing or coating, after this, paper web is dried.
The invention still further relates to a kind of rear portion drying cylinder of implementing the inventive method in order to the paper machine of drying surface-treated paper web or analog, this rear portion drying cylinder is arranged on after the ornamenting device, and paper web carries out top sizing or coating by this ornamenting device to it.
In the prior art, in the multi-cylinder baker of paper machine, adopt two net tractions and/or single net traction.In the traction of two nets, cylinder group has two nets, and one of them pushes paper web from the top, and another pushes paper web from the below, and it is pressed on the surface of cylinder of heating.Drying cylinder is normally horizontal, and between each row of drying cylinder, paper web is subjected to unsupported freely traction, makes paper web be easy to produce chatter, and then is easy to damage, and particularly works as paper web and remains wetter relatively, and is when intensity is relatively poor, easier to be like this.Why Here it is uses described single net traction in recent years more and more, in single net traction, each group drying cylinder only comprises an oven dry net, support paper web thereon by whole cylinder group, the oven dry net is being squeezed in paper web on the heating cylinder surfaces on the drying cylinder, and on reverse cylinder between the cylinder group or roller, keeps the camber line of paper web in its outside.Therefore, in single net traction, drying cylinder is arranged in the outside in net loop, and reverse cylinder or roller are arranged in the inboard in described net loop.
As can be known, in the standard group of so-called single net traction, the cylinder group of heating is arranged on row from prior art, and reverse cylinder is arranged on down row, and that these are arranged is normally horizontally disposed and parallel each other.On the other hand, in reverse group of single net traction, drying cylinder is arranged on down row usually, and oppositely cylinder is arranged on row.In the following description, when using term " standard (drying cylinder) group " and " oppositely (drying cylinder) group ", expression be single many cylinder group of drawing of netting of the above-mentioned type.
When paper is dried by the standard cylinder group of single net traction of its basal surface, if so asymmetric oven dry is extended drying forward on the whole length of workshop section, realize oven dry, so that at first the basal surface side of paper web is dried, when oven dry was proceeded, drying effect also extended to the top surface side of paper web.Under these situations, from above description as can be seen, normally curled, and become spill by the paper of being dried.
As can be known, the curling test of paper usually is to be associated with the formation of paper web from prior art, particularly in the formation stage of page, utilizes the different choice of the speed between weir plate nozzle and the net and utilizes other operational factor influenced.From prior art, also know,, utilize the unequal-side effect of the oven dry in the drying cylinder of rear portion, can adjust page, make it have suitable initial curling form, so that after the single or double manifolding, can optimize curling of paper for example for carbon paper.For carbon paper, curling respond is the degree that the per unit moisture content change curl to produce, and has wider variation for the paper of sandwich construction, and it produces with green end in paper web formation and is associated.
In high speed paper machine, particularly in the fine paper paper machine, immediate technology related to the present invention is based on drier workshop section, in this workshop section, single net traction is arranged in the major part of paper machine length, consider the control of paper curling test, also use one oppositely to organize in the practice so that oven dry can be carried out enough balancedly in the Z direction.
In the prior art, at applied paper particularly the solution that proposes of the rear portion drying cylinder of fine paper or analog be in drying cylinder, drying cylinder and drying cylinder once to be set at first on one, use the single of standard to net after one group that draws at this, cylinder group adopts two nets to draw.In it was used, the problem that is occurred was, considered the curling test of paper, adjusted suitablely if will curl, and then the ratio of cylinder group is wrong up and down.As can be known, in the drying cylinder of rear portion, because adhesion and the sizing material on the drying cylinder and the paste of paper web, the necessary temperature of first cylinder group that keeps is lower from prior art.Here it is why according to the capacity needs that provided carry out on sizable part of paper machine length paper web or with single net traction or with the heating on the drying cylinder of two nets tractions.
An object of the present invention is to provide a kind of solution, this method can be controlled curling of paper web, becomes longer so that the rear portion drying cylinder is unlikely.
Be used for the paper applied cylinder group of the above-mentioned type of the ornamenting of fine paper has particularly been described in applicant's FI patent application No.950434.Therefore, the objective of the invention is to further develop the solution that in described application, proposes, so that in the drying cylinder of rear portion, more effectively control the curling test of paper.
FI patent application No.931263 (identical with U.S. Patent No. 5495678) for all right application reference people of prior art with european patent application No.0620313, described a kind of device of optimization in this patent application, this device is combined the cylinder group and the impingement drying of the single net traction of the application of prior art.
Another object of the present invention provides a kind of solution that is used for the rear portion drying cylinder, and this scheme is particularly suitable in the drying cylinder that can not or be not suitable for forwardly using in the drying cylinder workshop section of curling of control paper web.
A further object of the present invention provides a kind of rear portion drying cylinder that is used for paper machine, makes it have quite high-caliber flowability.
A further object of the invention provides a kind of rear portion drying cylinder with paper machine of highly effective drying capacity.
From prior art as can be known, after coating work station or top sizing device, can use electronics or gas infrared ray.And, also use so-called combination drying device in the prior art, wherein an infrared heat air enters a device that is known as the air cushion paper web dryers.A further object of the present invention provides a kind of rear portion drying cylinder that helps saving the paper machine of the energy.
A special purpose of the present invention is to set up the new ideas of the rear portion drying cylinder that is used for the good paper machine of good fluidity, efficient height and curl control performance.
Above-described and following in order to realize with the goal of the invention that occurs, the principal character of the inventive method is in the drying cylinder of rear portion, paper web is dried at least one cylinder group of utilizing single net of standard to draw, utilize an impingement device that paper web is carried out drying simultaneously, this impingement device links to each other with at least one cylinder or roller in the described cylinder group.
And, utilize the principal character of the rear portion drying cylinder of the inventive method to use the cylinder group of single net traction of a standard, and an impingement device is installed links to each other with at least one cylinder or roller in the described cylinder group for this rear portion drying cylinder comprises at least one.
According to one embodiment of present invention,, reverse a group of adopting single net traction is installed, on these suction rolls, is provided with and draws cylinder mould or analog, reverse rollers/cylinder and impact blast hood in the beginning part of rear portion drying cylinder.Such device has superiority, because single net traction has good flowability, does not need to adopt the lead-in wire of pull rope, and the impingement drying coated face of dry-web effectively.Utilize such device, the device one together with other can obtain the Fast Heating of paper web, and then the moisture that is contained in the paper surface is evaporated expeditiously.The impact air blast can not exert an influence to curling, and curling of paper web can two the net in the cylinder group of drawing of employing below be regulated by the steam pressure in the upper and lower drying cylinder is adjusted to suitable level.Apparatus of the present invention can make the structure of rear portion drying cylinder shorter, and utilize the device of electric energy more to save the energy than infrared ray drying cylinder etc., because can be used to the burning gases from liquefied petroleum gas in impingement drying, this is more favourable than electric energy.Compare with the air cushion paper web dryers, an important advantage of system of the present invention is a good fluidity.And in apparatus of the present invention, the operating efficiency of adjusting device, and impingement drying at an easy rate provides the possibility of croos profile.
According to a most preferred embodiment of the present invention, used impingement drying in this device and come dry coating, with the mode that combinations red outside line/the air cushion paper web dryers is identical, in impingement device, utilize air by the infrared ray heating.Can use the displaced air of hot-air as impingement device, but also can be directly as impacting the air blast air, the air of replacing otherwise must heating, perhaps it also can be used as the air that preheats of a burner, and described air blast air utilizes this burner to heat.Consider the problem of efficient, can utilize the infrared-gas drying cylinder to raise the efficiency.In such device, be associated with the rear portion drying cylinder, after coating or top sizing device, before cylinder dried and impingement device, provide a gas-drying apparatus or infrared-gas drier as predrying.This device has the good advantage of hauling ability of saving the energy and paper web.
Describe the present invention in more detail with reference to the figure that provides in the accompanying drawings below, but the present invention is not limited to following described particular content.
Fig. 1 schematically shows an embodiment, wherein in the beginning part of rear portion drying cylinder, provides a cylinder group of using single net to draw, and reverse rollers/cylinder has an impingement device in this cylinder group, and is a cylinder group that adopts two nets to draw after this group.
Fig. 2 schematically shows a rear portion drying cylinder, and this rear portion drying cylinder is identical with shown in Fig. 1 basically, and first drying device is an air cushion paper web dryers in this drying cylinder.
Basic identical shown in embodiment shown in Fig. 3 and Fig. 1 and 2, but in this embodiment, paper web is turned to by a reverse air blast case after coating.
At Fig. 4 is the schematic diagram of an embodiment, after coating/top sizing, paper web is turned to by a reverse air blast case, enters a reverse cylinder group that adopts single net to draw, impingement device wherein being installed linking to each other with reverse rollers/cylinder, is a cylinder group that adopts two net tractions after this.
Fig. 5 schematically shows an embodiment, and this embodiment is identical with the cardinal principle shown in Fig. 4, but adopts the interior drying cylinder of reverse cylinder group of single net traction to be replaced by a reverse air blast case.
In the embodiment shown in fig. 6, first cylinder group is a cylinder group that adopts single net traction of standard, in this cylinder group, links to each other with reverse rollers impingement device has been installed, and is one and adopts two cylinder group of drawing of netting at it after.
In the embodiment shown in fig. 7, in the drying cylinder of rear portion first group is a standard cylinder group that adopts single net traction, is second a standard cylinder group that adopts single net to draw this group after, in this is organized, links to each other with some reverse rollers impingement device has been installed.
Embodiment shown in Figure 8 is identical with the cardinal principle shown in Fig. 7, but before the cylinder group that adopts single net traction, the first drying cylinder device in the drying cylinder of rear portion is an air cushion paper web dryers.
In the embodiment shown in fig. 9, be the cylinder group of the standard of the single net traction of an employing after the one air cushion paper web dryers device, after this group, be provided with a cylinder that diameter is very big, impingement device links to each other with this cylinder, and is the cylinder group of the standard of the single net traction of an employing after this cylinder.
In the embodiment shown in fig. 10, first cylinder group of rear portion drying cylinder has the very big reverse cylinder/roller of a diameter, and impingement device links to each other with this cylinder/roller, and is a cylinder group that adopts two nets to draw after this cylinder/roller.
In the embodiment shown in fig. 11, first group in the drying cylinder of rear portion is a cylinder group that adopts two nets to draw, and this group is afterwards a reverse cylinder group that adopts single net to draw, and is the cylinder group of the two net tractions of an employing afterwards.
Figure 12 A and 12B schematically show the nozzle face of an impingement device.
In the embodiment shown in fig. 13, in the beginning part of rear portion drying cylinder, linking to each other with first drying cylinder is provided with an infrared dryer, and its heat uses in impingement drying, and between infrared dryer and impingement drying device a reverse air blast device has been installed.
In the embodiment shown in fig. 14, utilize an infrared dryer or gas-drying apparatus to come dry-web after coating, its heat is utilized in impingement drying, and after infrared dryer, being provided with a reverse air blast case, is an impingement drying device group after it.
In Fig. 1, apparatus for coating represents with reference number 10, this apparatus for coating 10 be a kind of by the applicant with SYM-SIZER
TMThe apparatus for coating on market, sold of title, this device comprises two relative applicator rolls 11 and 12, the sizing material feed arrangement links to each other with each roller, so that the coating nip of paper web W between roller 11 and 12 is all applied from two faces.After this, paper web W enters the rear portion drying cylinder, arrival is arranged on down on the first interior drying cylinder 21 of row RA, through after this drying cylinder, paper web W enters its reverse cylinder group that adopts single net traction, arrival is arranged on the interior first reverse rollers/cylinder 23 of row RY, and paper web W utilizes oven dry net or suitable supports fabrics 26 arrival to be positioned on the drying cylinder 22 of arranging RA down thus, and then arrives on the reverse rollers/cylinder 24 that is positioned at row RY.Be positioned at the row's reverse rollers of RY or cylinder 23,24 and link to each other impact air-blast device 25 is installed, utilize this device towards paper web W jet drying gas/air.The guide roller of oven dry net 26 is represented with numeral 27, utilizes guide roller 27A to make the working line of oven dry net 26 produce skew, so that it is not contacted with the paper web W through drying cylinder 21 that will be dried.Paper web W is supported from reverse rollers/cylinder 24 by oven dry net 26 and enters the two cylinder group of netting traction of an employing with a totally enclosed traction, arrives on first drying cylinder 31 that is positioned at row RA under it.In the figure, the drying cylinder in the following row RA represents that with reference number 31,32 and 33 paper web W arrives on the drying cylinder 41,42 and 43 that is positioned at row RY alternately and circuitously through these cylinders respectively.The oven dry net 34 of arranging the cylinder 31,32,33 in the RA is down guided by guide roller 35, and the oven dry net 44 of the row of going up RY is guided by guide roller 45.Paper web W process guide roller/aligning roller 46 is to be further processed process.Can provide a scraper 28 to link to each other with drying cylinder.
Reverse rollers/cylinder preferably adopts by the applicant with " VAC-ROLL "
TMThe absorption net verdant sold of trade mark, and wherein do not provide inner suction box, see applicant's FI patent No.83680 (identical United States Patent(USP) Nos. 5022163 and 5172491) for details about the concrete structure of described roller.Can also use by the applicant replaces Vac-Roll to draw cylinder mould with the roller of trade mark UNO sale or known cooling cylinder or hot cylinder.
Embodiment shown in Fig. 2 is identical with the cardinal principle shown in Fig. 1, and corresponding part is expressed with identical reference number.Different with the embodiment shown in Fig. 1, in Fig. 2, the paper web W that utilizes apparatus for coating 10 coatings is at first by an air cushion paper web dryers 15, and this drier 15 is arranged on before first drying cylinder 21 as a predrying device.
Embodiment shown in Figure 3 is identical with the cardinal principle shown in Fig. 1 and 2, and corresponding part is expressed with identical reference number.Different in this embodiment is after apparatus for coating 10, paper web W enters in the air cushion paper web dryers 15 as predrying device through a reverse air blast device 14, and directly arrives one from this air cushion paper web dryers 15 and adopt reverse group of single net traction arrange on first reverse rollers/cylinder 23 in the RY.
Embodiment shown in Figure 4 is identical substantially with the embodiment shown in Fig. 1 to 3, but in this embodiment, after apparatus for coating 10, paper web W directly arrives one through a reverse air blast device 14 and adopts on single first reverse rollers/cylinder 23 of netting in reverse group the row of the going up RY that draws.
Embodiment shown in Figure 5 is identical substantially with embodiment shown in Figure 4, but in this embodiment, the interior drying cylinder 22 of following row RA of the first reverse cylinder group of the single net traction of employing is replaced by a reverse air blast device 28.
In the embodiment shown in fig. 6, the paper web W that has been coated with arrives the arranging on first drying cylinder 51 in the RY of standard cylinder group of adopting single net traction from apparatus for coating 10 through drying cylinders 21.This cylinder group comprises two drying cylinders 51 being positioned at row RY and 52 and be positioned at two reverse rollers or the cylinder 53,54 of arranging RA down.Link to each other with reverse rollers/cylinder, be provided with an impingement device 55.The oven dry net is with reference number 56 expressions, and guide roller is with 57 expressions.After this cylinder group, paper web W is dried net 56 with a totally enclosed traction utilization and is arrived on the first drying cylinder 41A who adopts in couple row of the going up RY that nets the cylinder group of drawing.These cylinder group and two net tractions shown in the aforementioned figures of adopting two nets to draw are similar.
In the embodiment shown in fig. 7, be one adopt the cylinder group of single net traction of standard after the apparatus for coating 10, the paper web W that has been coated with enters this cylinder group through drying cylinder 61 and 62.The paper web W that will be dried that is supported on the oven dry net 66 arrives on the drying cylinder 64 with the drying cylinder 63 that is positioned at row RY through being positioned at reverse rollers/cylinder 65 of arranging RA down circuitously, paper web W enters the cylinder group of single net traction of next employing standard thus, arrive with a totally enclosed traction on described group the oven dry net 76, oven dry net 76 supports paper web W circuitously through reverse rollers/ cylinder 75,78 of being positioned at row RA down and be positioned at the drying cylinder 73 of arranging RY.Link to each other with middle part reverse rollers/cylinder 78 of arranging in the RA down, be provided with impingement device 79, dry paper web in order to the dry air blast of further utilization.Paper web W process drying cylinder 74 is to be further processed process.In the cylinder group that adopts single net traction, used bellows 68 or analog, for example, can improve its flowability by the device 68 of applicant with trade mark UNO-RUN-BLOW-BOX sale.Certainly, these devices also can be used among other the embodiment shown in the drawings.
Embodiment shown in Figure 8 is identical with the cardinal principle shown in Fig. 7, but in this embodiment, paper web W by the air cushion paper web dryers 15 as predrying device, enters the cylinder group that adopts normal single-wire draw from apparatus for coating 10 through drying cylinder 61,62.
Embodiment shown in Figure 9 is identical with cardinal principle shown in Figure 8, but in this embodiment, after apparatus for coating 10, the paper web W that has been coated with is by air cushion paper web dryers 15, enter the first standard cylinder group that adopts single net traction through cylinder 61,62, after this, paper web W walks around drying cylinder 81 around major diameter roller 80, provides an impingement device 85 to link to each other with this major diameter roller.The diameter of major diameter roller is bigger by 20 to 150% than the diameter of general drying cylinder, and preferably 25 to 90%.Thereafter is to be positioned at row's drying cylinder 82 down, and paper web W enters one through drying cylinder 91 and adopts single standard cylinder group of netting traction thus, and the reverse rollers/cylinder of this cylinder group is with reference number 95 expressions, and drying cylinder is with reference number 93 expressions.The oven dry net is with 96 representatives, and its guide roller is with numeral 97 expressions.
In the embodiment shown in fig. 10, after apparatus for coating 10, paper web W arrives on the surface of major diameter roller 100 through drying cylinder 101, and it is coupled to be provided with an impingement device 105.After the major diameter roller 100 is a drying cylinder 102 and one reverse rollers/cylinder 103, and after this, paper web W enters cylinder group that adopt two net tractions, and this is basically with above-mentioned for example identical with reference to accompanying drawing 1 described content.Link to each other with major diameter roller 100, the oven dry net 106 of himself is provided, its guide roller is expressed with numeral 107.Utilize guide roller 107A, make the running route of oven dry net produce skew, so that it is not contacted with the paper web W that will be dried that walks around drying cylinder 101.
In the embodiment shown in fig. 11, the paper web W that was coated with in apparatus for coating 10 at first enters a cylinder group that adopts two nets to draw through drying cylinder 111, in this cylinder group, the operation of upper wire 114 is guided by guide roller 115 and walks around drying cylinder 112 and 113, and lower wire 122 is walked around guide roller 123 and drying cylinder 121.Paper web W flows to another row RY circuitously from a row RA, and between RA and RY, paper web W does not have supporting traction freely.Paper web W enters next cylinder group from the cylinder group that adopts two net tractions, arrives on the drying cylinder 131 of row under being positioned at, and paper web W moves in the support of oven dry net 136 herein.After this, paper web runs on the interior reverse rollers/cylinder 132 of row, and is coupled, is provided with an impingement device 135.Row under paper web turns back to thereafter, and then arrive on the drying cylinder 141,142 that is positioned at row, and rear portion in this group, be provided with a common cylinder group that adopts two nets to draw, identical as the net of lower wire 136 within it with net by impingement drying device group, and the drying cylinder 141,142 in the row of going up has himself an oven dry net circulation 146 with guide roller 147.Paper web W enters presumable further processing procedure through guide roller 143.
Figure 12 A and 12B have schematically illustrated the structure of the nozzle surface of impingement device, and wherein the air blast hole is with N
2Expression, and the emptying tracheae is with N
1Expression.Emptying tracheae N
1Diameter be approximately 50 to 100mm, 75mm preferably, and the diameter in air blast hole is approximately 3 to 8mm, normally 5mm.Paper web W is approximately 10 to 150mm from the distance of the surface operation of nozzle plate, and the nozzle box of preferably 25mm, and hood expresses with alphabetical N.Express with C on the surface of drying cylinder.The open area in the air blast hole in the nozzle plate is approximately 1 to 5% on the area of paper web W, and normally 1.5%.The speed of the air in the air blast hole is approximately 40 to 150m/s, preferably 100m/s.The air capacity that air blast goes out is approximately 0.5 to 2.5m
3/ sm
2, these are suitable for obtaining the effective area of hood.Usually use 1 to 1.5m
3/ sm
2Air capacity.The aperture area of emptying tracheae is approximately 5 to 15%, and normally 10%.Except the nozzle surface shown in this accompanying drawing, also can use known slot type nozzle arrangements, the fluid tip structure, the aerofoil profile nozzle arrangements, or a direct-firing nozzle arrangements and an infrared dryer for example, and in above-mentioned those any, alternately paper machine transversely as so-called combination drying cylinder.
The impingement device of using in the embodiment shown in Fig. 1 to 11 can be a kind of in the device of number of different types, and is known to those skilled in the art, and in this device, the oven dry air flow blows towards the paper web that will be dried.Impingement device can on the traffic direction S of paper web or with the perpendicular direction of traffic direction on be provided with completely, in this case, can regulate separately this device of every suit if desired.
In the embodiment shown in fig. 13, after apparatus for coating 10, paper web W runs on the drying cylinder 151, the coupled infrared dryer 152 of having installed.After this, the paper web that be dried through reverse air blast case 153 to drying cylinder 154 and and then arrive on a reverse rollers or a drying cylinder or the analog 155.Be provided with an impingement device 156 and link to each other with cylinder/roller 154, this device can be opened so that clean on arrow S156 indicated direction.Described in accompanying drawing description in front, the traction of net is single net traction of standard.Utilize apparatus for coating 10, implement coating, promptly as shown in the figure, be coated on the bottom surface of paper surface W in the side of net.The hot-air of the discharge of infrared dryer 152, is used for using in impingement device 156 by an air blast 158 along passage 157.This Infrared Heating air can directly be used as impact air blast air and replace otherwise the needs air of heating, or as the preheated air in the burner, the described air blast air that is used for impingement device in this burner is heated, or as the displaced air that is used for impingement device.Can utilize pivotal parts 171, open impingement device 156 towards its bottom.
In the embodiment shown in fig. 14, utilize apparatus for coating 10 on the top surface of paper web W, to implement coating, then paper web W is at first by infrared/gas drier 161 dryings, thereafter, utilize a reverse air blast case 162 that paper web W is turned to and paper web W enters a cylinder group that adopts oppositely single net traction, in this group, provide impingement device 167 to link to each other with reverse rollers/cylinder 163,165.Be used as the dry air of impingement drying from the infrared/discharge air of gas drier 161, discharge gas by passage 168 and the air system that enters impingement drying by air blast 169.
Below only described the present invention, but the present invention is in no way limited to the detailed structure of described embodiment with reference to some most preferred embodiments.In by the appended scope of the present invention that claim limited, can carry out the modifications and variations of various ways to the present invention.
Claims (27)
1. the paper web drying surface-treated in the drying cylinder of the rear portion of paper machine or the method for analog, in the method, paper web (W) at first in a finishing workshop section by ornamenting, in this finishing workshop section, paper web (W) by an ornamenting device (10) with its top sizing or coating, after this, paper web (W) is dried, and it is characterized in that in the drying cylinder of rear portion, and paper web (W) is dried at least one cylinder group of utilizing single net to draw, simultaneously, utilize an impingement device (25; 55; 79; 85; 105; 135; 156; 167) come dry-web (W), at least one cylinder in the installation of this impingement device and the described cylinder group or roller (23,24; 53,54; 78; 80; 100; 132; 154; 163,165) link to each other.
2. the method for claim 1, it is characterized in that afterwards through ornamenting device (10), paper web (W) enters a cylinder group that adopts oppositely single net to draw through a drying cylinder (21), in described cylinder group, utilize an impingement device (25) and be positioned at the drying cylinder (22) of arranging (RA) down paper web (W) is dried, wherein this impingement device (25) be positioned at row's (RY) a reverse cylinder or a roller (23,24) link to each other, after this, paper web (W) enters a cylinder group that adopts two nets to draw.
3. method as claimed in claim 1 or 2 is characterized in that in the method, at ornamenting device (10) afterwards, utilizes an air cushion paper web dryers (15) to carry out predrying to paper web (W).
4. method as claimed in claim 3 is characterized in that at ornamenting device (10) afterwards paper web (W) carries out predrying through a reverse air blast device (14) in an air cushion paper web dryers (15).
5. method as claimed in claim 3, it is characterized in that afterwards at ornamenting device (10), paper web (W) enters a cylinder group that adopts oppositely single net to draw through a reverse air blast device (14), in this cylinder group, utilize an impingement device (25) that links to each other with the reverse cylinder/roller (23,24) that is positioned at row (RY) and be positioned at the drying cylinder (22) of arranging (RA) down paper web (W) is carried out drying.
6. the method for claim 1, it is characterized in that afterwards at ornamenting device (10), paper web (W) enters a cylinder group that adopts oppositely single net to draw through a reverse air blast device (14), in this cylinder group, utilize and the reverse cylinder/roller (23 that is positioned at row (RY), 24) impingement device (25) of Xiang Lianing is carried out drying to paper web (W), and paper web (W) turns to by means of a reverse air blast device (28) in following row (RA).
7. the method for claim 1, it is characterized in that in the method, at ornamenting device (10) afterwards, paper web (W) enters the cylinder group of an employing normal single-wire draw through a drying cylinder (21), in this cylinder group, paper web (W) utilizes drying cylinder (51 in last row (RY), 52) it is carried out drying, and utilizing an impingement device (55) to carry out drying in the row (RA) down, wherein this impingement device (55) and reverse rollers/cylinder (53,54) link to each other, after this, paper web (W) enters a cylinder group that adopts two nets to draw.
8. the method for claim 1, it is characterized in that afterwards at ornamenting device (10), paper web (W) is through two drying cylinders (61,62) enter a cylinder group that adopts normal single-wire draw, in this cylinder group, the drying cylinder (63) that utilization is arranged in the row (RY) carries out drying to paper web (W), then paper web (W) enters second cylinder group of an employing normal single-wire draw through a drying cylinder (64), and in this adopts second cylinder group of single net traction, paper web (W) utilize in the row of being arranged on (RY) drying cylinder (73) with one be positioned under arrange the impingement device (79) that at least some reverse rollers/cylinders (78) of (RA) link to each other it carried out drying.
9. as claim 1 or 8 described methods, it is characterized in that in the method that at ornamenting device (10) afterwards, paper web (W) enters an air cushion paper web dryers (15) it is carried out prebake.
10. the method for claim 1, it is characterized in that in the method, at ornamenting device (10) afterwards, paper web (W) is through two drying cylinders (61,62) enter a cylinder group that adopts normal single-wire draw, then, paper web (W) enters second cylinder group that adopts single net to draw, in this cylinder group, the major diameter drying cylinder (80) that utilization is arranged in the row (RY) carries out drying with an impingement device (85) that links to each other with described drying cylinder (80) to paper web (W), after this, paper web (W) carries out drying in the 3rd cylinder group of an employing normal single-wire draw.
11. method as claimed in claim 10 is characterized in that utilizing an air cushion paper web dryers that paper web (W) is carried out prebake.
12. the method for claim 1, it is characterized in that in the method, at ornamenting device (10) afterwards, paper web (W) enters into one through a drying cylinder (101) that is positioned at following row (RA) and is positioned on major diameter reverse rollers/cylinder (100) of row (RY), paper web (W) utilizes an impingement device (105) that links to each other with this roller/cylinder that it is carried out drying, after this, paper web (W) passes to one and is positioned on the drying cylinder (102) of arranging (RA) down, and adopts two cylinder group of netting traction after a reverse rollers or cylinder (103) enter one.
13. the method for claim 1, it is characterized in that afterwards at ornamenting device (10), paper web (W) enters a cylinder group that adopts two nets to draw through a drying cylinder (111), then, paper web (W) enters a cylinder group that adopts single net to draw, in this cylinder group, utilization is positioned at row's (RA) drying cylinder (131 down, 132) with an impingement device (135) that links to each other with the one reverse rollers/cylinder (132) that is positioned at row (RY) paper web (W) is carried out drying, after this, paper web (W) enters a cylinder group that adopts two nets to draw.
14. the method for claim 1 is characterized in that at ornamenting device (10) afterwards, paper web (W) utilizes an infrared dryer (152; 161) it is carried out prebake, then paper web (W) enters a cylinder group that adopts single net to draw, and in this cylinder group, utilizes one and one roller or cylinder (154; 163,165) impingement device (156 of Xiang Lianing; 167) paper web (W) is carried out drying, and in the method, from infrared dryer (152; 161) discharge air is used in impingement device (156; 167) use in.
15. the described method of each claim is characterized in that in the method as the aforementioned, paper web (W) enters into another cylinder group with a totally enclosed traction from a cylinder group.
16. each described method that is used for implementing claim 1 to 15 is with the rear portion drying cylinder of the paper machine of drying a surface-treated paper web or analog, this rear portion drying cylinder is arranged on ornamenting device (10) afterwards, carry out top sizing or coating by this ornamenting device (10) paper web (W), it is characterized in that this rear portion drying cylinder comprises the cylinder group that at least one adopts single net traction, and install one with described cylinder group at least one cylinder or roller (23,24; 53,54; 78; 80; 100; 132; 154; 163,165) impingement device (25 of Xiang Lianing; 55; 79; 85; 105; 135; 156; 167).
17. rear portion as claimed in claim 16 drying cylinder, it is characterized in that described rear portion drying cylinder comprises afterwards that at ornamenting device (10) one adopts the cylinder group of oppositely single net traction, in this cylinder group, one impingement device (25) and a reverse cylinder or a roller (23 that is positioned at row (RY) are arranged, 24) link to each other, and this rear portion drying cylinder comprises that also one adopts the cylinder group of two net tractions, and this cylinder group is arranged on after the cylinder group of the single net traction of described employing.
18., it is characterized in that the predrying device in the drying cylinder of described rear portion is an air cushion paper web dryers (15) as claim 16 or 17 described rear portion drying cylinders.
19. rear portion as claimed in claim 18 drying cylinder is characterized in that being provided with a reverse air blast device (14) afterwards at ornamenting device (10).
20. rear portion as claimed in claim 16 drying cylinder is characterized in that a reverse air blast device (28) is arranged in the following row (RA) of the cylinder group that adopts single net traction.
21. rear portion as claimed in claim 16 drying cylinder, it is characterized in that afterwards at ornamenting device (10), be provided with the cylinder group of an employing normal single-wire draw, one impingement device (55) and the interior reverse rollers/cylinder (53 of the following row (RA) of described cylinder group have been installed, 54) link to each other, and be the cylinder group of the two net tractions of an employing after the described cylinder group.
22. rear portion as claimed in claim 16 drying cylinder, it is characterized in that described rear portion drying cylinder comprises that two are adopted of single net traction to be arranged on cylinder group after another, at least some interior reverse rollers/cylinders of an impingement device (79) and one following row (RA) in described single net traction cylinder group have been installed have been linked to each other.
23. rear portion as claimed in claim 22 drying cylinder is characterized in that described rear portion drying cylinder comprises an air cushion paper web dryers (15).
24. rear portion as claimed in claim 16 drying cylinder is characterized in that described rear portion drying cylinder comprises a cylinder group, has a major diameter cylinder or roller (80 in this group; 100) and an impingement device (85), this impingement device (85) links to each other with described cylinder or roller.
25. rear portion as claimed in claim 16 drying cylinder, it is characterized in that described rear portion drying cylinder comprises that one adopts first cylinder group of two net tractions and next cylinder group of the single net traction of an employing, in the cylinder group of back, an impingement device (135) has been installed has linked to each other with the one reverse rollers/cylinder (132) that is positioned at row (RY).
26. rear portion as claimed in claim 16 drying cylinder is characterized in that described rear portion drying cylinder comprises an infrared dryer (152; 161) a, impingement device (156; 167) a, passage (157; 168) and an air blast (158,169), be used for from the discharge air of infrared dryer in impingement device (156; 167) use in.
27. rear portion as claimed in claim 16 drying cylinder is characterized in that having formed a totally enclosed traction of paper web (W) between each cylinder group of described rear portion drying cylinder.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI963,735 | 1996-09-20 | ||
| FI963735A FI106270B (en) | 1996-09-20 | 1996-09-20 | A method for drying a surface-treated paper web or the like in a post-drying section of a papermaking machine and a papermaking post-drying part of a papermaking machine |
| FI963735 | 1996-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1231007A true CN1231007A (en) | 1999-10-06 |
| CN1077637C CN1077637C (en) | 2002-01-09 |
Family
ID=8546715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97198086A Expired - Fee Related CN1077637C (en) | 1996-09-20 | 1997-09-09 | Method for drying surface-treated paper web or equivalent in after-dryer of paper machine and after-drying carrying out the method in paper machine |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1015690A1 (en) |
| JP (1) | JP2001500580A (en) |
| CN (1) | CN1077637C (en) |
| AU (1) | AU4302897A (en) |
| CA (1) | CA2267287A1 (en) |
| FI (1) | FI106270B (en) |
| WO (1) | WO1998012380A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802468B (en) * | 2003-05-08 | 2010-07-28 | 美卓造纸机械公司 | Method for control of the curl of paper in the treatment of surface-sized paper, and finishing section of a paper machine |
| CN105926340A (en) * | 2016-06-20 | 2016-09-07 | 山东天阳纸业有限公司 | Drying equipment and drying process applied to thermal dye sublimation body paper |
| CN110998022A (en) * | 2017-08-10 | 2020-04-10 | 福伊特专利有限公司 | Machine and method for producing a fibrous web |
| CN114622434A (en) * | 2022-04-18 | 2022-06-14 | 广东理文造纸有限公司 | Hot cylinder temperature control coating device and temperature control method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6001421A (en) * | 1996-12-03 | 1999-12-14 | Valmet Corporation | Method for drying paper and a dry end of a paper machine |
| FI119564B (en) * | 2001-03-09 | 2008-12-31 | Metso Paper Inc | Procedure and arrangement for the production of printing paper |
| SE535634C2 (en) * | 2010-11-16 | 2012-10-23 | Andritz Tech & Asset Man Gmbh | Cellulose dryer having lower blow boxes and method of drying a web of cellulose pulp |
| EP2708645A1 (en) * | 2012-09-17 | 2014-03-19 | Metso Paper Inc. | An arrangement and a method for producing coated board |
| DE102018002073A1 (en) * | 2018-03-15 | 2019-09-19 | Grenzebach Bsh Gmbh | Nozzle box for a drying device for drying plasterboard |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI100013B (en) * | 1993-03-22 | 1997-08-15 | Valmet Paper Machinery Inc | Drying procedure and drying module and drying portions where applied, especially for a fast-moving paper machine |
| FI98387C (en) * | 1995-02-01 | 1997-06-10 | Valmet Corp | Method for the production of surface-treated paper, in particular fine paper, and the dry end of a paper machine |
-
1996
- 1996-09-20 FI FI963735A patent/FI106270B/en active
-
1997
- 1997-09-09 CA CA002267287A patent/CA2267287A1/en not_active Abandoned
- 1997-09-09 EP EP97919060A patent/EP1015690A1/en not_active Withdrawn
- 1997-09-09 JP JP10514319A patent/JP2001500580A/en active Pending
- 1997-09-09 WO PCT/FI1997/000532 patent/WO1998012380A1/en not_active Application Discontinuation
- 1997-09-09 CN CN97198086A patent/CN1077637C/en not_active Expired - Fee Related
- 1997-09-09 AU AU43028/97A patent/AU4302897A/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802468B (en) * | 2003-05-08 | 2010-07-28 | 美卓造纸机械公司 | Method for control of the curl of paper in the treatment of surface-sized paper, and finishing section of a paper machine |
| CN105926340A (en) * | 2016-06-20 | 2016-09-07 | 山东天阳纸业有限公司 | Drying equipment and drying process applied to thermal dye sublimation body paper |
| CN110998022A (en) * | 2017-08-10 | 2020-04-10 | 福伊特专利有限公司 | Machine and method for producing a fibrous web |
| CN110998022B (en) * | 2017-08-10 | 2022-07-29 | 福伊特专利有限公司 | Machine and method for producing a fibrous web |
| CN114622434A (en) * | 2022-04-18 | 2022-06-14 | 广东理文造纸有限公司 | Hot cylinder temperature control coating device and temperature control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| FI963735A0 (en) | 1996-09-20 |
| FI106270B (en) | 2000-12-29 |
| WO1998012380A1 (en) | 1998-03-26 |
| AU4302897A (en) | 1998-04-14 |
| EP1015690A1 (en) | 2000-07-05 |
| FI963735A (en) | 1998-03-21 |
| CA2267287A1 (en) | 1998-03-26 |
| CN1077637C (en) | 2002-01-09 |
| JP2001500580A (en) | 2001-01-16 |
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