CN102242519B - Craft paper papermaking machine and papermaking method thereof - Google Patents
Craft paper papermaking machine and papermaking method thereof Download PDFInfo
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- CN102242519B CN102242519B CN201110151687.5A CN201110151687A CN102242519B CN 102242519 B CN102242519 B CN 102242519B CN 201110151687 A CN201110151687 A CN 201110151687A CN 102242519 B CN102242519 B CN 102242519B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 16
- 239000002344 surface layer Substances 0.000 claims description 54
- 125000006850 spacer group Chemical group 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000007639 printing Methods 0.000 abstract description 7
- 239000000123 paper Substances 0.000 description 110
- 239000010410 layer Substances 0.000 description 13
- 240000000486 Lepidium draba Species 0.000 description 10
- 235000000391 Lepidium draba Nutrition 0.000 description 10
- 239000002655 kraft paper Substances 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 4
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001815 facial effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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Abstract
The invention relates to a craft paper papermaking machine and a papermaking method thereof. Craft paper at least comprises a surface course, a bottom course and a lining course positioned between the surface course and the bottom course. The papermaking machine comprises a forming part, a squeezing part and a drying part which are arranged sequentially along the horizontal direction, wherein the forming part comprises a headbox and a fourdrinier part; and the fourdrinier part comprises a surface net for forming the surface course of the craft paper, a bottom net for forming the bottom course of the craft paper and a core net for forming the lining course of the craft paper. The squeezing part is provided with at least one rubber coated smooth roll; the bottom net and the core net are positioned above the papermaking machine side by side; and the surface net is positioned below the bottom net and the core net. In the craft paper papermaking machine, the design of the net part is novel, the smoothness, flatness and printing adaptability of the paper surface course are improved substantially, and the technical problem of low smoothness of the craft paper is solved; and the paper surface course adhered to a drying cylinder surface on the drying part is smooth, so the drying efficiency is improved, and energy is saved greatly.
Description
Technical field
The invention belongs to pulp technology for making paper, be specifically related to the forming section of a kind of paper machine, particularly paper machine.The invention still further relates to a kind of method of using this paper machine papermaking.
Background technology
Craft paper, claims again pick up paper, coated craft paper, vermicelli craft paper, brown paper.White-top kraft liner board is a kind of white board, is also a kind of manila board, and there is the capacity of 1,000,000 tons in domestic market at present.White-top kraft liner board has two kinds, and a kind of is the craft paper of bleached wood pulp vermicelli, and a kind of is the craft paper of surface-coated, mainly does packed in cases and uses.White-top kraft liner board intensity is high, one side whiteness is high, is a kind of broad-spectrum packaging material.White-top kraft liner board generally includes a surface layer, a lining and a bottom, and owing to having adopted layer structure, surface layer, lining, bottom can adopt different fibre stufves, and for example surface layer can adopt wood pulp one time, and remaining layer can adopt secondary stock slurry.This white-top kraft liner board production cost is low, and paper pulp pollutional load is little, but surface smoothness is low, and absorption of inks is excessive, and print gloss is poor, cannot meet high-quality printing demand.
In prior art, white-top kraft liner board mainly utilizes paper machine (board machine) to manufacture.Although according to the different requirements of concrete papermaking process, the version of paper machine has various, generally include at least one forming section, a press section, a drying section and curling and drive disk assembly and accessory system.Wherein, forming section comprises head box and forming net.For the paper machine of manufacturing white-top kraft liner board, forming net comprises the net of three forms with closed loop around multiple guide reel operations, one in three nets is positioned at top, for veil, another two be placed side by side veil below be respectively core net and spacer screen, wherein, veil, core net and spacer screen corresponding surface layer, lining and the bottom that is used to form white-top kraft liner board respectively.While manufacturing, first prepare the slurry of surface layer, the slurry of lining and the slurry of bottom, then by the slurry of surface layer, the slurry of lining and the slurry of bottom are sprayed onto on corresponding veil, core net and spacer screen by head box respectively, through compound manufacturing paper with pulp, make surface layer up, bottom below paper web, this paper web obtains white-top kraft liner board successively after press section press and oven dry portion are dry.Press section is that the wet paper web after being shaped is further dewatered in the mode of pressurization, and it is hard and soft two rods by roll surface, as the one group of squeezing of composition that matches of stone roll and rubber roll.Press section is exactly to be comprised of same form or multi-form squeezing group, is wherein also comprising traditionally vacuum suction moving device.During squeezing, with the felt support paper web of suitable specification, it is moulding pressure take away part and be squeezed the moisture squeezing out at the uniform velocity, and can increase the pressure of pressurization, improves press dewatering ability.Conventionally, press section is designed to four roller three nips, and four rollers are respectively squeezing bottom roller (fluted roller), vacuum furnace, breast roll (encapsulate smooth roll), boots roller.From forming section surface layer out paper web upward, continue to enter with surface layer the second nip and the 3rd nip of press section upward, in nip, the surface layer of paper web directly contacts with the felt in nip, because felt itself is more coarse, caused the coarse of surface layer, this is very unfavorable to the smoothness of paper.After press section, paper web enters oven dry portion, to be generally first three groups or four groups be single extension in the design of known oven dry portion again, latter six groups is double cylinder, the paper web that enters oven dry portion enters after oven dry portion upward with surface layer, its surface layer and oven dry portion are pasting dry net rather than are pasting drying cylinder, and this is also very unfavorable for the smoothness that improves paper layer.
To sum up, take existing forming net design, cause paper web when through press section and oven dry portion, all produced the impact that is unfavorable for paper layer smoothness.In practice, take the smoothness of surface layer of the white-top kraft liner board that the paper machine of this design manufactures all lower, need calender to load very large line pressure, sometimes even need two and above calender just can reach the requirement of use.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of improved craft paper paper machine is provided, and improves smoothness, flatness and the printing adaptability of the paper layer of its manufacturing.
The present invention also will provide a kind of forming section of craft paper paper machine simultaneously, takes the smoothness of surface layer of the paper of the paper machine manufacturing of this forming section high, and printing adaptability is good.
The present invention also will provide a kind of and use above-mentioned craft paper paper machine to carry out the method for papermaking, and it has improved smoothness and the printing adaptability of craft paper surface layer simply and effectively.
For solving above technical problem, a kind of technical scheme that the present invention takes is: a kind of craft paper paper machine, described craft paper at least comprises surface layer, bottom and the lining between surface layer and bottom, described paper machine comprises the forming section that along continuous straight runs sets gradually, press section and oven dry portion, described forming section comprises head box and wet end, described wet end comprises the veil of the surface layer that is used to form craft paper, be used to form craft paper bottom spacer screen and be used to form the core net of the lining of craft paper, described press section has at least one encapsulate smooth roll, wherein: described spacer screen and core net are positioned at the top of described paper machine side by side, veil is positioned at the below of spacer screen and core net.
According to further embodiment of the present invention, described veil, core net and spacer screen move around multiple guide reels with the form of closed loop respectively.Described press section is designed to four roller three nips, and four rollers are respectively above-mentioned an encapsulate smooth roll, squeezing bottom roller, vacuum furnace and boots roller.Described oven dry portion is that first three groups list is hung, rear six groups of double drying cylinders.
The another technical scheme that the present invention takes is: a kind of method that above-mentioned craft paper paper machine carries out papermaking, wherein, prepare slurry, the slurry of lining and the slurry of bottom of surface layer first respectively, then they are sprayed onto on described veil, described core net and described spacer screen by head box correspondence respectively, through manufacturing paper with pulp, make surface layer down, bottom paper web upward; Then paper web surface layer is carried successively down through press section and the oven dry portion of paper machine and obtained described craft paper, wherein, when the described press section of paper web process, the surface layer of paper web and the breast roll of press section are affixed, when the described oven dry of paper web process portion, the oven dry surface of the surface layer of paper web and oven dry portion is affixed.
Owing to adopting the enforcement of above technical scheme, the present invention compared with prior art tool has the following advantages:
Paper machine of the present invention adopts novel wet end design, with existing veil upper, core net and spacer screen under to stack pattern different, wet end three-layer forming of the present invention is designed to veil in bottom, core net and spacer screen in the above, three layers of compound rear formation surface layer down, bottom paper web upward.So, from wet end paper web out, enter press section, the surface layer of paper web is all pasting encapsulate smooth roll, encapsulate smooth roll is compared with other roller of press section, very smooth, roughness is in 1.6, and the line pressure in the nip of press section is very high, conventionally more than 1100kn/m, this smoothness to raising paper web surface layer is highly beneficial, from press section, enter oven dry portion out, paper web is also wetter at single extension run duration, at single run duration of hanging, the oven dry surface that the surface layer of paper web touch oven dry portion is drying cylinder face, drying cylinder face is also very smooth, this is also highly beneficial to the smoothness of raising paper web surface layer.Facts have proved, take paper machine of the present invention, when calender only loads the pressure of 20kn/m, more than the smoothness of paper layer can reach 12s, during not press polish of body paper, surface layer smoothness can reach 7s.
The inventive method adopts the paper machine with novel wet end design, significantly improved the printing adaptability of paper layer smoothness, flatness and paper layer, overcome the low technical barrier of craft paper smoothness, and, due in oven dry portion, paste drying cylinder facial tissue surface layer more smooth, drying efficiency improves, more energy-conservation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described in detail.
Fig. 1 is the partial structurtes schematic diagram according to the forming section of craft paper paper machine of the present invention;
Fig. 2 is the partial structurtes schematic diagram according to the press section of craft paper paper machine of the present invention;
Fig. 3 is according to the structural representation of the oven dry portion of craft paper paper machine of the present invention;
Wherein: 1, forming section; 10, wet end; 100, veil; 101, spacer screen; 102, core net; 2, press section; 20, encapsulate smooth roll; 21, squeezing bottom roller; 22, vacuum furnace; 23, boots roller; 3, oven dry portion.
The specific embodiment
As shown in Figures 1 to 3, according to the craft paper paper machine of the present embodiment three parts that comprise horizontal direction set gradually the same as most of paper machines, be specially forming section 1, press section 2 and oven dry portion 3.Press section 2 and oven dry portion 3 all adopt existing structural design, and wherein, what press section 2 adopted is that four rollers three are installed with meter, and four rollers are respectively squeezing bottom roller (fluted roller) 21, vacuum furnace 22, encapsulate smooth roll 20(roughness generally in 1.6) and boots roller 23.The design of six groups of double cylinders after oven dry portion 3 adopts first three groups list to hang.Owing to being existing design, at this, be not described in detail.
Forming section 1 further comprises spill box and wet end 10, and the main difference of the present invention and prior art is that its wet end 10 to forming section 1 improves.As shown in Figure 1, wet end 10 comprise the surface layer that is used to form craft paper veil 100, be used to form craft paper bottom spacer screen 101 and be used to form the core net 102 of the lining of craft paper, wherein: described spacer screen 101 and core net 102 are positioned at the top of described paper machine side by side, and veil 100 is positioned at the below of spacer screen 101 and core net 102.Veil 100, core net 102 and spacer screen 101 move around multiple guide reels with the form of closed loop respectively.
Take above-mentioned craft paper paper machine to carry out the step of papermaking as follows: slurry, the slurry of lining and the slurry of bottom of preparing first respectively surface layer, then they are sprayed onto on described veil, described core net and described spacer screen by head box correspondence respectively, through manufacturing paper with pulp, make surface layer down, bottom paper web upward; Then paper web surface layer is carried successively down through press section and the oven dry portion of paper machine and obtained described craft paper, wherein, when the described press section of paper web process, the encapsulate smooth roll of the surface layer of paper web and press section is affixed, when the described oven dry of paper web process portion, the oven dry surface of the surface layer of paper web and oven dry portion is affixed.
Paper machine of the present invention adopts novel wet end design, from wet end paper web out, enter press section, the surface layer of paper web is all pasting encapsulate smooth roll, encapsulate smooth roll is compared with other roller of press section, very smooth, and the line pressure in the nip of press section is very high, conventionally more than 1100kn/m, this smoothness to raising paper web surface layer is highly beneficial, from press section, enter oven dry portion out, paper web is also wetter at single extension run duration, at single run duration of hanging, the oven dry surface that the surface layer of paper web touch oven dry portion is drying cylinder face, drying cylinder face is also very smooth, this is also highly beneficial to the smoothness of raising paper web surface layer.Facts have proved, take paper machine of the present invention, when calender only loads the pressure of 20kn/m, more than the smoothness of paper layer can reach 12s, during not press polish of body paper, surface layer smoothness can reach 7s.
The inventive method adopts the paper machine with novel wet end design, significantly improved the printing adaptability of paper layer smoothness, flatness and paper layer, overcome the low technical barrier of craft paper smoothness, and, due in oven dry portion, paste drying cylinder facial tissue surface layer more smooth, drying efficiency improves, more energy-conservation.
Above the present invention is described in detail; its object is to allow the personage who is familiar with this art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; the equivalence that all Spirit Essences according to the present invention are done changes or modifies, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. a craft paper paper machine, described craft paper at least comprises surface layer, bottom and the lining between described surface layer and described bottom, described paper machine comprises the forming section that along continuous straight runs sets gradually, press section and oven dry portion, described forming section comprises head box and wet end (10), described wet end (10) comprises the veil (100) of the surface layer that is used to form craft paper, be used to form the spacer screen (101) of the bottom of craft paper and be used to form the core net (102) of the lining of described craft paper, described press section has at least one encapsulate smooth roll (20), it is characterized in that: described spacer screen (101) and core net (102) are positioned at the top of described paper machine side by side, described veil (100) is positioned at the below of described spacer screen (101) and described core net (102), described veil (100), core net (101) and spacer screen (102) move around multiple guide reels with the form of closed loop respectively, described press section is designed to four roller three nips, and described four rollers are respectively described an encapsulate smooth roll (20), squeezing bottom roller (21), vacuum furnace (22) and boots roller (23).
2. craft paper paper machine according to claim 1, is characterized in that: described oven dry portion is that first three groups list is hung, rear six groups of double drying cylinders.
3. a method of using craft paper paper machine to carry out papermaking, described craft paper at least comprises surface layer, bottom and the lining between described surface layer and described bottom, described paper machine comprises the forming section that along continuous straight runs sets gradually, press section and oven dry portion, described forming section comprises head box and wet end (10), described wet end (10) comprises the veil (100) of the surface layer that is used to form craft paper, be used to form the spacer screen (101) of the bottom of craft paper and be used to form the core net (102) of the lining of described craft paper, described press section has at least one encapsulate smooth roll (20), it is characterized in that: described spacer screen (101) and core net (102) are positioned at the top of described paper machine side by side, described veil (100) is positioned at the below of described spacer screen (101) and described core net (102), described method is: the slurry of preparing first respectively surface layer, the slurry of lining and the slurry of bottom, then they are sprayed onto to described veil (100) by head box correspondence respectively, on described core net (102) and described spacer screen (101), through manufacturing paper with pulp, make surface layer down, bottom paper web upward, then paper web surface layer is carried successively down through press section and the oven dry portion of paper machine and obtained described craft paper, wherein, when the described press section of paper web process, the encapsulate smooth roll (20) of the surface layer of paper web and press section is affixed, when the described oven dry of paper web process portion, the oven dry surface (30) of the surface layer of paper web and oven dry portion is affixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110151687.5A CN102242519B (en) | 2011-06-08 | 2011-06-08 | Craft paper papermaking machine and papermaking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110151687.5A CN102242519B (en) | 2011-06-08 | 2011-06-08 | Craft paper papermaking machine and papermaking method thereof |
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| Publication Number | Publication Date |
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| CN102242519A CN102242519A (en) | 2011-11-16 |
| CN102242519B true CN102242519B (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110151687.5A Active CN102242519B (en) | 2011-06-08 | 2011-06-08 | Craft paper papermaking machine and papermaking method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111851118B (en) * | 2020-08-04 | 2022-09-16 | 玖龙纸业(天津)有限公司 | Production process of low-roughness coated paper and coated paper |
| CN111979843A (en) * | 2020-08-24 | 2020-11-24 | 山鹰国际控股股份公司 | Wet-end papermaking process for improving surface smoothness of paper |
| CN116770624B (en) * | 2023-06-14 | 2024-04-19 | 昆山浠辰包装科技有限公司 | Preparation process of substrate surface smoothness with flexography effect |
| CN117864816B (en) * | 2024-01-31 | 2024-09-10 | 玉田县炬兴印刷包装机械制造有限公司 | Card paper adjusting device and adjusting method for card mounting machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039461A (en) * | 1989-07-05 | 1990-02-07 | 谢如甫 | High strength folder muscle kraft wrapping production technology and equipment |
| EP0511185A1 (en) * | 1991-04-23 | 1992-10-28 | International Paper Company | Method and apparatus for the production of multiply cellulosic board and product obtained thereby |
| US6699361B1 (en) * | 1999-09-07 | 2004-03-02 | Metso Paper Karlstad Ab | Papermaking device for producing a multilayer liner and associated methods |
| CN202116938U (en) * | 2011-06-08 | 2012-01-18 | 海龙纸业（太仓）有限公司 | Kraft paper papermaking machine and forming portion thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI108241B (en) * | 2000-08-10 | 2001-12-14 | Metso Paper Inc | Process for the manufacture of coated fiber web, improved paper or paperboard machine and coated paper or paperboard |
| FI20085782A7 (en) * | 2008-08-22 | 2010-02-23 | Valmet Technologies Inc | Cardboard machine |
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2011
- 2011-06-08 CN CN201110151687.5A patent/CN102242519B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039461A (en) * | 1989-07-05 | 1990-02-07 | 谢如甫 | High strength folder muscle kraft wrapping production technology and equipment |
| EP0511185A1 (en) * | 1991-04-23 | 1992-10-28 | International Paper Company | Method and apparatus for the production of multiply cellulosic board and product obtained thereby |
| US6699361B1 (en) * | 1999-09-07 | 2004-03-02 | Metso Paper Karlstad Ab | Papermaking device for producing a multilayer liner and associated methods |
| CN202116938U (en) * | 2011-06-08 | 2012-01-18 | 海龙纸业（太仓）有限公司 | Kraft paper papermaking machine and forming portion thereof |
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| CN102242519A (en) | 2011-11-16 |
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