CN103225226B - Paper making equipment and papermaking process - Google Patents
Paper making equipment and papermaking process Download PDFInfo
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- CN103225226B CN103225226B CN201310129063.2A CN201310129063A CN103225226B CN 103225226 B CN103225226 B CN 103225226B CN 201310129063 A CN201310129063 A CN 201310129063A CN 103225226 B CN103225226 B CN 103225226B
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- transferring member
- coating
- paper web
- drying cylinder
- spray equipment
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Abstract
A kind of paper making equipment, comprise drying cylinder, pressure roller, transferring member and be arranged on the spray equipment of drying cylinder upstream, transferring member is for transmitting the paper web to be dried come from upstream, Platen support transferring member also makes transferring member and dryer surface support, drying is carried out for the paper web in transferring member is transferred to dryer surface, this dryer surface is provided with coating, the width of coating is greater than the width of paper web, the width of transferring member is more than or equal to the width of coating, and spray equipment is on ejecting liquid to transferring member and by transferring member, the liquid rotating of spray is moved to the coating of drying cylinder.The invention still further relates to a kind of papermaking process.Compared with prior art, paper making equipment provided by the invention arranges spray equipment in the upstream of drying cylinder, the liquid that spray equipment is sprayed is transferred to dryer surface by transferring member and easily produces in the coating on yellow limit, not only while avoiding producing yellow limit, also do not affect the operations such as the drying of the paper web on dryer surface.
Description
Technical field
The present invention relates to a kind of paper making equipment and papermaking process, particularly a kind of have the paper making equipment of drying cylinder and utilize drying cylinder to carry out dry papermaking process to paper web.
Background technology
In paper-making process, drying cylinder is a kind of equipment of conventional dry-web, and the heat provided by dryer surface carries out drying to wet web.Usual drying cylinder creping doctor of also arranging in pairs or groups carries out wrinkling operation to the paper web of dryer surface.Dryer surface is coated with coating, acting as of coating prevents drying cylinder and creping doctor from directly touching, reduce the wearing and tearing of dryer surface, and the wet web that upstream can be made to pass over by the chemical composition (being generally sticker cylinder agent and remover) of adjustment coating is better and drying cylinder is fitted, and paper also can be made better to peel off from dryer surface.
The width of usual wet web is less than the width of drying cylinder and coating.Wet web is through dryer surface, and when being also coating surface, because in wet web, moisture evaporation needs to absorb heat, the temperature at the position that coating is contacted by wet web can reduce.And in the coating that drying cylinder two ends do not contact with wet web, being in the hot environment of dryer surface always, the coating temperature of this part is after higher than a certain critical-temperature, and coating will produce crosslinking curing, shows as the sclerosis of drying cylinder coating.The coating at drying cylinder two ends has the coating of wet web process than the phenomenon being easier to harden relative to centre, is namely commonly called as " yellow limit " phenomenon into drying cylinder coating in paper industry.
The appearance of " yellow limit " phenomenon, can make coating layer thickness uneven, unstable when causing scraper to work, and paper web can produce shake trace, or easily cause the phenomenon of disconnected paper, bring very large puzzlement, affect production efficiency to production.
Industry has some improvement projects for " yellow limit " phenomenon.Such as, there is top or the side direction at the position on " yellow limit " at drying cylinder two ends, spray equipment is installed, adopt the principle of cooling or removal to improve the problem of its crosslinking curing.But drying cylinder mainly utilizes high temperature to carry out drying, and this cooling method sprays at dryer surface, can affect the mass dryness fraction of paper web undoubtedly.If water spray, also easily make coating be wiped off by scraper, thus reduce the lubricity between drying cylinder and scraper, greatly increase wearing and tearing, also easily cause the phenomenon of disconnected paper.
Summary of the invention
In view of this, be necessary to provide one effectively can reduce " yellow limit " and do not affect in paper-making process related process operation paper making equipment and papermaking process.
A kind of paper making equipment, comprise drying cylinder, pressure roller, transferring member and be arranged on the spray equipment of drying cylinder upstream, transferring member is for transmitting the paper web to be dried come from upstream, Platen support transferring member also makes transferring member and dryer surface support, drying is carried out for the paper web in transferring member is transferred to dryer surface, this dryer surface is provided with coating, the width of coating is greater than the width of paper web, the width of transferring member is more than or equal to the width of coating, and spray equipment is on ejecting liquid to transferring member and by transferring member, the liquid rotating of spray is moved to the coating of drying cylinder.
A kind of papermaking process, comprising:
Transferring member transmit upstream manufacture paper with pulp formed paper web to be dried;
Spray equipment ejecting liquid is set in transferring member;
Arrange drying cylinder for carrying out drying to paper web, this dryer surface is provided with coating, and the width of coating is greater than the width of paper web, and the width of transferring member is more than or equal to the width of coating;
Arrange pressure roller for supporting transferring member and making transferring member and dryer surface support, the paper web in transferring member is transferred to dryer surface by this pressure roller, is moved in the coating of dryer surface by spray equipment spray to the liquid rotating in transferring member simultaneously.
Compared with prior art, paper making equipment provided by the invention arranges spray equipment in the upstream of drying cylinder, instead of arranges spray equipment on drying cylinder, therefore can avoid, as sprayed in prior art on dried paper web, dried paper web being affected.In addition, the liquid that the present invention makes spray equipment spray can be transferred to dryer surface by transferring member and easily produce in the coating on yellow limit, the partial coating that the liquid of this spray can not cover the paper web being transferred to dryer surface from transferring member cools, prevent the coating of this part be in the hot environment of drying cylinder always and produce sclerosis, the coating of drying cylinder therefore can be avoided to produce yellow limit phenomenon.
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.
Accompanying drawing explanation
Fig. 1 is the schematic front view of the paper making equipment of one embodiment of the invention.
Fig. 2 is the schematic side view of paper making equipment shown in Fig. 1.
Fig. 3 is the schematic front view of the paper making equipment of another embodiment of the present invention.
Fig. 4 is the schematic side view of paper making equipment shown in Fig. 3.
Main element symbol description
| Cylinder drying portion | 100 |
| Drying cylinder | 10 |
| Coating | 11 |
| Paper web | 20 |
| Spray equipment | 30、43 |
| Shower | 31、41 |
| Nozzle | 32、42 |
| Web-forming section | 400 |
| Transferring member | 40 |
| Pressure roller | 50 |
| Deflector roll | 51 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Refer to Fig. 1 and Fig. 2, the paper making equipment of the present invention one better embodiment comprises the Web-forming section 400 being positioned at upstream and the cylinder drying portion 100 being positioned at downstream.
Web-forming section 400 comprises pressure roller 50, deflector roll 51 and is supported by pressure roller 50, deflector roll 51 and form the transferring member 40 of loop.
This Web-forming section 400 also comprises the structures such as not shown head box, and this transferring member 40 carries out drying for transmitting paper web 20 to the cylinder drying portion 100 to be dried formed of manufacturing paper with pulp through upstream.Certainly, generally the relevant parts such as aspirator etc. that dries also can be set at Web-forming section 400, preliminary removal moisture is carried out to paper web 20.
This transferring member 40 can be the object that the industry such as woollen blanket, net blanket for transmitting paper web 20 is commonly used.
This cylinder drying portion 100 comprises drying cylinder 10, this cylinder drying portion 100 also can comprise not shown established drying cylinder 10 for cover and reclaims the cover body of the gas of heating, and is equipped with drying cylinder 10 and carries out the wrinkling paper web 20 that makes to paper web 20 and depart from the structures such as the scraper on drying cylinder 10 surface.
The pressure roller 50 of this Web-forming section 400 supports transferring member 40, transferring member 40 and drying cylinder 10 surface is supported, and carries out drying for the paper web 20 in transferring member 40 is transferred to drying cylinder 10 surface.
As shown in Figure 2, this drying cylinder 10 surface arranges coating 11.Coating 11 generally comprises sticker cylinder agent and remover, and the wet web 20 that its role is to upstream is passed over is better and drying cylinder 10 is surperficial fits, and paper web 20 also can be made better to peel off from drying cylinder 10 surface simultaneously.On the drying cylinder 10 being equipped with scraper, the width of coating 11 arranges generally large than the length of scraper, makes scraper can when scratching with drying cylinder 10 surface, have coating 11 reduce between drying cylinder 10 and scraper both wearing and tearing.
Paper web 20 drying cylinder 10 on the surface time, the width of this coating 11 is greater than the width of paper web 20, and therefore coating 11 has the part exposed outside paper web 20 two ends.Because the coating 11 exposed outside paper web 20 two ends is easily subject to the impact of drying cylinder 10 surface high-temp, cause crosslinking curing occurs, also namely there is " yellow limit " phenomenon, the invention provides a spray equipment 30 for slowing down or avoiding this paper making equipment to occur this type of " yellow limit " phenomenon in process of production.
This spray equipment 30 is arranged on the upstream of drying cylinder 10, for the liquid rotating of spray is moved to the coating 11 of drying cylinder 10 by ejecting liquid to transferring member 40 by transferring member 40.In order to thoroughly avoid the sclerosis of coating 11, the width of transferring member 40 should be made to be more than or equal to the width of coating 11.Therefore, the liquid be transferred in coating 11 from transferring member 40 can prolong and completely to the two ends of coating 11.
The liquid of this spray is transferred to the surface of drying cylinder 10 together with the paper web 20 in transferring member 40, coating 11 on drying cylinder 10 in the middle part of it because the moisture evaporation of paper web 20 can reduce temperature, it exposes end outside paper web 20 two ends then because the liquid of spray also obtains the compensation of temperature, therefore can slow down this partial coating 11 being arranged in end because being placed in the hot environment of drying cylinder 10 for a long time and the crosslinking curing produced, also namely the liquid of this spray can slow down or avoid the generation of " yellow limit " phenomenon on drying cylinder 10.
Meanwhile, the liquid of this spray is in the upstream of drying cylinder 10, is also namely transferred to the surface of drying cylinder 10 together with paper web 20 to be dried, and therefore the operation of this kind of spray can not have influence on dried on drying cylinder 10 paper web 20.
In addition, while spray, be also the process of a cleaning transferring member 40, prevent the fiber etc. in transferring member 40 to be transferred in the coating 11 of drying cylinder 10, avoid coating 11 hardenability to increase.
The liquid of this spray equipment 30 spray can be can to lower the temperature the suitable fluid preventing it from hardening to coating 11.Such as, this liquid can comprise remover, softener or oiliness chemical drug.These liquid are transferred to after in coating 11, the same with the part coating 11 that paper web 20 covers, and also can be removed by scraper part, and have the effect of lubrication scraper, not easy damaged scraper.Because liquid spray relates generally to the scope of the partial coating 11 that can not cover to paper web 20, do not need to be covered in sticker cylinder agent on drying cylinder 10 containing being convenient to paper web 20, and containing sticker cylinder agent in original coating 11, if again containing sticker cylinder agent in the liquid of spray, negative effect is played by the interaction on scraper and drying cylinder 10 surface, therefore when being provided with scraper for paper web 20 on creping cylinder 10, preferably not containing sticker cylinder agent in the liquid of spray.
This spray equipment 30 is arranged on the upstream of pressure roller 50.The optimum position that spray equipment 30 is arranged, should near the position of pressure roller 50, and namely the leading portion that extruded by pressure roller 50 of transferring member 40, makes the liquid of spray be driven rapidly and be transferred to drying cylinder 10 surface.In structure shown in Fig. 1, this spray equipment 30 is arranged on the position one of them deflector roll 51 close that are parallel to ground, can ensure that spray effectively transfers to drying cylinder 10 surface at the liquid of transferring member 40 both sides.
Further, this spray equipment 30 ejecting liquid to region in transferring member 40 can have a larger scope, such as, can be at the two ends do not covered by paper web 20 of transferring member 40 and to prolong and to the part covered by paper web 20.But spray can increase the humidity of paper web 20 to paper web 20, causes paper web 20 to need to evaporate more moisture on drying cylinder 10.Therefore preferably, this spray equipment 30 ejecting liquid to region in transferring member 40 is not by the two ends that paper web 20 covers in transferring member 40, after being also namely transferred to drying cylinder 10 surface, corresponds to two end portion that drying cylinder 10 surface easily produces " yellow limit ".
Further, the width due to transferring member 40 is more than or equal to the width of coating 11, and the peak width of this spray equipment 30 ejecting liquid in transferring member 40 is more than or equal to the width exposing the coating 11 outside paper web 20 two ends after paper web 20 is transferred to drying cylinder 10 surface.Also namely, as shown in Figure 2, outside the often end of paper web 20 transverse direction in transferring member 40, the peak width of ejecting liquid should be more than or equal to d, and wherein d is the width exposing coating 11 outside paper web 20 two ends wherein one end arbitrarily.
In one particularly embodiment, the nozzle 32 that this spray equipment 30 comprises support (not shown), is connected to the shower 31 on support and is arranged on shower 31, not by two ends that paper web 20 covers in the corresponding transferring member 40 of nozzle 32.This support can be used for spray equipment 30 to be fixed in the frame (not shown) of paper making equipment.The spray angles scope of spray equipment 30 is 5 °-90 °, and optimum chooses 90 ° of sprays, also namely as shown in FIG., and the plane orthogonal at spray direction and transferring member 40 place.Nozzle 32 is sustainable or off and on to transferring member 40 transverse ends ejecting liquid, make transferring member 40 after extruding through pressure roller 50, spray is moved on at the liquid rotating on surface the region that drying cylinder 10 easily produces " yellow limit ", slows down the problem of drying cylinder 10 two ends coating 11 crosslinking curing.
Understandable, shower 31 can be arranged according to actual demand with the quantity of nozzle 32.
Please refer to Fig. 3 and Fig. 4, the paper making equipment that another embodiment of the present invention provides also comprises another spray equipment 43, and the corresponding drying cylinder 10 of this another spray equipment 43 is arranged, and is arranged between position that pressure roller 50 and paper web 20 depart from drying cylinder 10 surface.This another spray equipment 43 is for directly to drying cylinder 10 coating 11 ejecting liquid.
Similar, the position that this another spray equipment 43 also easily produces " yellow limit " to the coating 11 on drying cylinder 10 surface sprays, and the liquid of spray can comprise composition same or analogous with coating 11.The nozzle 42 that this another spray equipment 43 also comprises support (not shown), is connected to the shower 41 on support and is arranged on shower 41, the coating 11 on the corresponding drying cylinder 10 of nozzle 42 is not by two ends that paper web 20 covers.
Because this another spray equipment 43 is arranged between the position that pressure roller 50 and paper web 20 depart from drying cylinder 10 surface, these positions do not relate to the run location of paper web 20, and the liquid of spray can not affect the drying of paper web 20 equally.Optimum, this another spray equipment 30 is arranged on position as shown in Figure 3, to be positioned at immediately below drying cylinder 10 and vertical with drying cylinder 10, can ensure so only can spray in the coating 11 of drying cylinder 10, and can not spray the region at paper web 20 place.
When utilizing paper making equipment provided by the invention to produce, as shown in FIG., the transferring member 40 on pressure roller 50 with counter clockwise direction transmission, thus transmit upstream manufacture paper with pulp formed paper web 20 to be dried; Spray equipment 30 ejecting liquid are in transferring member 40; Paper web 20 in transferring member 40, also counterclockwise to rotate, is transferred to drying cylinder 10 surface by pressure roller 50, is sprayed by spray equipment 30 to the liquid rotating in transferring member 40 simultaneously and moves in the coating 11 on drying cylinder 10 surface.Drying cylinder 10 is in the process rotated clockwise, and for carrying out drying to paper web 20, and on drying cylinder 10 surface dried to a certain degree rear (usual mass dryness fraction is more than 90%), paper web 20 departs from from drying cylinder 10 surface.Coating 11 width that this drying cylinder 10 surface is arranged is greater than the width of paper web 20, spray to the liquid in transferring member 40 is then transferred to the position of coating 11 correspondence exposed at paper web 20 two ends, make the coating 11 at this position slow down crosslinking curing, thus slow down or avoid the generation of " yellow limit " phenomenon.
Arrange in the embodiment of another spray equipment 43 drying cylinder 10 is corresponding on the surface, this another spray equipment 43 also simultaneously or alternately can carry out work with spray equipment 30, easily producing the coating 11 position ejecting liquid on " yellow limit ", avoid coating 11 crosslinking curing at this position.
Claims (10)
1. a paper making equipment, comprise drying cylinder, pressure roller and transferring member, transferring member is for transmitting the paper web to be dried come from upstream, Platen support transferring member also makes transferring member and dryer surface support, drying is carried out for the paper web in transferring member is transferred to dryer surface, this dryer surface is provided with coating, the width of coating is greater than the width of paper web, the width of transferring member is more than or equal to the width of coating, it is characterized in that, this paper making equipment also comprises the spray equipment being arranged on drying cylinder upstream, spray equipment is on ejecting liquid to transferring member and by transferring member, the liquid rotating of spray is moved to the coating of drying cylinder, this spray equipment ejecting liquid to the region in transferring member is not by two ends that paper web covers in transferring member.
2. paper making equipment as claimed in claim 1, is characterized in that: this spray equipment is arranged on the upstream of pressure roller.
3. paper making equipment as claimed in claim 1, is characterized in that: this liquid comprises remover, softener or oiliness chemical drug.
4. as the paper making equipment in claim 1-3 item as described in any one, it is characterized in that: the nozzle that this spray equipment comprises support, is connected to the shower on support and is arranged on shower, not by two ends that paper web covers in the corresponding transferring member of nozzle.
5. paper making equipment as claimed in claim 4, is characterized in that: also comprise another spray equipment, and the corresponding drying cylinder of this another spray equipment is arranged, and is arranged on pressure roller and paper web between the position that dryer surface departs from, for drying cylinder coating ejecting liquid.
6. a papermaking process, comprising:
Transferring member transmit upstream manufacture paper with pulp formed paper web to be dried;
Spray equipment ejecting liquid is set in transferring member;
Arrange drying cylinder for carrying out drying to paper web, this dryer surface is provided with coating, and the width of coating is greater than the width of paper web, and the width of transferring member is more than or equal to the width of coating;
Arrange pressure roller for supporting transferring member and making transferring member and dryer surface support, the paper web in transferring member is transferred to dryer surface by this pressure roller, moves in the coating of dryer surface by spray equipment spray to the liquid rotating in transferring member simultaneously; This spray equipment ejecting liquid to the region in transferring member is not by two ends that paper web covers in transferring member.
7. papermaking process as claimed in claim 6, is characterized in that: this spray equipment is arranged on the upstream of pressure roller.
8. papermaking process as claimed in claim 6, is characterized in that: this liquid comprises remover, softener or oiliness chemical drug.
9. as the papermaking process in claim 6-8 item as described in any one, it is characterized in that: the nozzle that this spray equipment comprises support, is connected to the shower on support and is arranged on shower, the two ends that the corresponding transferring member of nozzle is not covered by paper web and by liquid spray in transferring member not by two ends that paper web covers.
10. papermaking process as claimed in claim 9, it is characterized in that: also comprise and another spray equipment is set, this another corresponding drying cylinder of spray equipment is arranged, and is arranged on pressure roller and paper web between the position that dryer surface departs from, and this another spray equipment is to drying cylinder coating ejecting liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129063.2A CN103225226B (en) | 2013-04-15 | 2013-04-15 | Paper making equipment and papermaking process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129063.2A CN103225226B (en) | 2013-04-15 | 2013-04-15 | Paper making equipment and papermaking process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103225226A CN103225226A (en) | 2013-07-31 |
| CN103225226B true CN103225226B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310129063.2A Active CN103225226B (en) | 2013-04-15 | 2013-04-15 | Paper making equipment and papermaking process |
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| Country | Link |
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| CN (1) | CN103225226B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562826B (en) * | 2014-12-02 | 2017-07-28 | 山东太阳生活用纸有限公司 | A kind of method for controlling paper to produce yellow side during drying cylinder |
Citations (5)
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|---|---|---|---|---|
| US3926716A (en) * | 1974-03-19 | 1975-12-16 | Procter & Gamble | Transfer and adherence of relatively dry paper web to a rotating cylindrical surface |
| CA2345289A1 (en) * | 1998-09-25 | 2000-04-06 | Maintech Co., Ltd. | Pollution prevention method for cylindrical dryer used in paper machine |
| CN1623019A (en) * | 2002-01-11 | 2005-06-01 | 曼泰克株式会社 | Anti-staining agent for paper machine, and method for preventing stains using the same |
| WO2012094443A2 (en) * | 2011-01-05 | 2012-07-12 | Georgia-Pacific Consumer Products Lp | Creping adhesive compositions and methods of using those compositions |
| CN103003490A (en) * | 2011-07-04 | 2013-03-27 | 曼泰克株式会社 | Contamination inhibitor composition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040060675A1 (en) * | 2002-09-30 | 2004-04-01 | Archer Sammy L. | Method for targeted application of performance enhancing materials to a creping cylinder |
| JP4097583B2 (en) * | 2003-09-18 | 2008-06-11 | 花王株式会社 | Manufacturing method of water-disintegrating paper |
-
2013
- 2013-04-15 CN CN201310129063.2A patent/CN103225226B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3926716A (en) * | 1974-03-19 | 1975-12-16 | Procter & Gamble | Transfer and adherence of relatively dry paper web to a rotating cylindrical surface |
| CA2345289A1 (en) * | 1998-09-25 | 2000-04-06 | Maintech Co., Ltd. | Pollution prevention method for cylindrical dryer used in paper machine |
| CN1328609A (en) * | 1998-09-25 | 2001-12-26 | 曼泰克株式会社 | Pollution prevention method for cylindrical dryer used in paper machine |
| CN1623019A (en) * | 2002-01-11 | 2005-06-01 | 曼泰克株式会社 | Anti-staining agent for paper machine, and method for preventing stains using the same |
| WO2012094443A2 (en) * | 2011-01-05 | 2012-07-12 | Georgia-Pacific Consumer Products Lp | Creping adhesive compositions and methods of using those compositions |
| CN103003490A (en) * | 2011-07-04 | 2013-03-27 | 曼泰克株式会社 | Contamination inhibitor composition |
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| CN103225226A (en) | 2013-07-31 |
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Effective date of registration: 20201202 Address after: No.468 Xiaowu Avenue, Xiaonan Economic Development Zone, Xiaogan City, Hubei Province Patentee after: Golden leaf paper (Hubei) Co., Ltd Patentee after: GOLD HONG YE PAPER Co.,Ltd. Address before: Suzhou City, Jiangsu province 215126 Suzhou Industrial Park, Kim Seung Road No. 1 Patentee before: GOLD HONG YE PAPER Co.,Ltd. |
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Effective date of registration: 20210930 Address after: 468 Xiaowu Avenue, Xiaonan Economic Development Zone, Xiaogan City, Hubei Province 432100 Patentee after: Golden leaf paper (Hubei) Co., Ltd Address before: 468 Xiaowu Avenue, Xiaonan Economic Development Zone, Xiaogan City, Hubei Province 432100 Patentee before: Golden leaf paper (Hubei) Co., Ltd Patentee before: GOLD HONGYE PAPER Group Co.,Ltd. |
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