CN104499343A - Water-absorbing kraft paper manufacturing process - Google Patents
Water-absorbing kraft paper manufacturing process Download PDFInfo
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- CN104499343A CN104499343A CN201410681903.0A CN201410681903A CN104499343A CN 104499343 A CN104499343 A CN 104499343A CN 201410681903 A CN201410681903 A CN 201410681903A CN 104499343 A CN104499343 A CN 104499343A
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- pulp
- hypochlorite bleaching
- brown paper
- water
- water suction
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
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Abstract
A water-absorbing kraft paper manufacturing process includes the steps of (1), selecting raw materials, namely, selecting bleached softwood pulp and hardwood pulp; (2), mixing the raw materials for pulping, namely, throwing the raw materials into a pulp smashing pond, adding industrial water and stirring and mixing uniformly to obtain mixed pulp; (3), grinding the pulp, namely, using a pulp grinding machine for grinding the mixed pulp to enable the mixed pulp to be dispersed evenly and delivering the evenly dispersed pulp into a completion tower standby; (4), feeding into a paper machine, namely, delivering the pulp in the completion tower into the paper machine. The water-absorbing kraft paper manufacturing process has the advantages that the proportion that the hardwood pulp accounts for the raw materials is increased, content of thick and short fibers in the raw materials is increased, a gap between each two adjacent fibers in kraft paper is expanded, an internal fiber structure of the kraft paper is fluffy, and accordingly, the kraft paper is good in water-absorbing performance.
Description
Technical field
The present invention relates to the manufacturing technique of water suction brown paper, this manufacturing technique can produce fluffy brown paper, has good water absorbing properties, belongs to paper-making technology field.
Background technology
Brown paper is used as packaging material, and intensity is very high, and usually in yellowish-brown, the kraft pulp of half drift or full drift is filbert, cream-colored or white, quantitative 80 ~ 120g/m
2fracture length is generally at more than 6000m, tearing toughness, merit of breaking and resistance to vibration are very high, mostly be roll web, also have sheet paper, employing kp softwood pulp is raw material, through making beating, fourdrinier machine is manufactured paper with pulp and forms, can be used as cement bag paper, M.G. pure sulphite paper, rubber seal paper dress, bituminized paper, cable protective paper, insulating paper etc.
Inventor finds through retrieval, the patent No. is 2008100933910, patent name is: Exquisite kraft paper and production method thereof, disclose the method utilizing masson pine, China fir, leaf wood manufacture brown paper, although reach good brown paper performance, the cost of material producing brown paper is very high, cause the cost of brown paper very high, be unfavorable for much requiring that low place uses.
Inventor also finds through retrieval, application number is 201310246673.0, patent name is: water suction brown paper and manufacture craft thereof, which disclosing by the mixed slurry of sulfate bleaching needle-point leaf pulp and sulfate bleached hardwood pulp is fibrous raw material, add the water suction brown paper that wet strength agent, brightening agent and dispersant are obtained, but the additive in this brown paper is a lot, causes in the actual production of brown paper, very unmanageable waste water can be produced, be unfavorable for cleaner production.
Summary of the invention
In order to solve above-mentioned Problems existing, the invention discloses a kind of manufacturing technique of the brown paper that absorbs water, its concrete technical scheme is:
The manufacturing technique of this water suction brown paper, comprises the following steps:
(1) raw material is selected: select hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp, the part by weight of hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp is: 1:3 ~ 10;
(2) raw material mixing making beating: hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp are rendered in pulping pond according to the ratio described in step (1), and industry water is added in pulping pond, the ratio adding quality and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp quality summation of industry water is 3.5 ~ 5.5:94.5 ~ 96.5, and be uniformly mixed, obtain mixing slurry;
(3) defibrination operation: the mixing of step (2) gained slurry is transported to fiberizer, mixing slurry becomes through fiberizer and is uniformly dispersed, and has been transported in tower stand-by;
(4) upper machine: by the slurry transferring that completes in tower to paper machine, successively through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Described press polish operation selects soft calender, the calender unit press polish of the brown paper after dehydration procedure and drying process through being combined into by hard roller and soft roller.
The linear pressure interval of described press polish operation is 175kN/m ~ 290 kN/m, and the surface temperature of calender unit is 120 DEG C ~ 175 DEG C, and the pace of brown paper in felt wrapped roll group is 770m/min ~ 1100m/min.
Described calender unit is made up of 2 hard rollers and 2 alternate being arranged vertically of soft roller.
Described step (2) is in the process be uniformly mixed, and in mixing slurry, add dispersing agent for fibre, the quality of dispersing agent for fibre and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp gross mass ratio are 1:20 ~ 40.
Described dispersing agent for fibre selects polyethylene glycol oxide and/or high molecular wt. anionic polyacrylamide.
Manufacturing technique of the present invention is in raw material selection, increase the ratio that hardwood pulp is shared in the feed, increase the content of fiber comparatively thick and short and small in raw material, such slurry is in sizing process, thick and short and small fiber is more easily erect or is tilted in brown paper, cause the thickness of brown paper to increase, the space between adjacent fiber increases, and brown paper internal fiber structure is fluffy.
Dispersing agent for fibre weakens the attraction between the adjacent fiber in mixing slurry, adjacent fiber disperses mutually, fiber is avoided to reunite, make in mixing slurry sizing process, fiber with on comparatively homodisperse various differing tilt angles on woollen blanket, avoid fiber order be taped against on woollen blanket, cause kraft fibers closely to spread reality, gap between adjacent fiber is little, and absorbability is little.
Detailed description of the invention
Below in conjunction with detailed description of the invention, illustrate the present invention further.Following detailed description of the invention should be understood only be not used in for illustration of the present invention and limit the scope of the invention.
Embodiment 1:
The manufacturing technique of water suction brown paper, comprises the following steps:
(1) raw material is selected: select hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp, the part by weight of hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp is: 1:3;
(2) raw material mixing making beating: hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp are rendered in pulping pond according to the ratio described in step (1), and industry water is added in pulping pond, the ratio adding quality and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp quality summation of industry water is 3.5:96.5, add high molecular wt. anionic polyacrylamide simultaneously, the quality of high molecular wt. anionic polyacrylamide and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp gross mass ratio are 1:20, and be uniformly mixed, obtain mixing slurry,
(3) defibrination operation: the mixing of step (2) gained slurry is transported to fiberizer, mixing slurry becomes through fiberizer and is uniformly dispersed, and has been transported in tower stand-by;
(4) upper machine: by the slurry transferring that completes in tower to paper machine, successively through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Wherein press polish operation selects soft calender, and brown paper after dehydration procedure and drying process is through being arranged vertically by 2 hard rollers are alternate with 2 soft rollers the calender unit press polish formed.
The linear pressure interval of wherein press polish operation is 175kN/m, and the surface temperature of calender unit is 120 DEG C, and the pace of brown paper in felt wrapped roll group is 770m/min.
Embodiment 2:
The manufacturing technique of water suction brown paper, comprises the following steps:
(1) raw material is selected: select hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp, the part by weight of hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp is: 1:5;
(2) raw material mixing making beating: hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp are rendered in pulping pond according to the ratio described in step (1), and industry water is added in pulping pond, the ratio adding quality and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp quality summation of industry water is 4:96, add polyethylene glycol oxide simultaneously, the quality of polyethylene glycol oxide and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp gross mass ratio are 1:25, and be uniformly mixed, obtain mixing slurry;
(3) defibrination operation: the mixing of step (2) gained slurry is transported to fiberizer, mixing slurry becomes through fiberizer and is uniformly dispersed, and has been transported in tower stand-by;
(4) upper machine: by the slurry transferring that completes in tower to paper machine, successively through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Wherein press polish operation selects soft calender, and brown paper after dehydration procedure and drying process is through being arranged vertically by 2 hard rollers are alternate with 2 soft rollers the calender unit press polish formed.
The linear pressure interval of wherein press polish operation is 205kN/m, and the surface temperature of calender unit is 134 DEG C, and the pace of brown paper in felt wrapped roll group is 865m/min.
Embodiment 3:
The manufacturing technique of water suction brown paper, comprises the following steps:
(1) raw material is selected: select hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp, the part by weight of hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp is: 1:7;
(2) raw material mixing making beating: hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp are rendered in pulping pond according to the ratio described in step (1), and industry water is added in pulping pond, the ratio adding quality and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp quality summation of industry water is 4.5:95.5, add high molecular wt. anionic polyacrylamide simultaneously, the quality of high molecular wt. anionic polyacrylamide and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp quality summation ratio are 1:30, and be uniformly mixed, obtain mixing slurry,
(3) defibrination operation: the mixing of step (2) gained slurry is transported to fiberizer, mixing slurry becomes through fiberizer and is uniformly dispersed, and has been transported in tower stand-by;
(4) upper machine: by the slurry transferring that completes in tower to paper machine, successively through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Wherein press polish operation selects soft calender, and brown paper after dehydration procedure and drying process is through being arranged vertically by 2 hard rollers are alternate with 2 soft rollers the calender unit press polish formed.
The linear pressure interval of wherein press polish operation is 232kN/m, and the surface temperature of calender unit is 147 DEG C, and the pace of brown paper in felt wrapped roll group is 935m/min.
Embodiment 4:
The manufacturing technique of water suction brown paper, comprises the following steps:
(1) raw material is selected: select hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp, the part by weight of hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp is: 1:9;
(2) raw material mixing making beating: hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp are rendered in pulping pond according to the ratio described in step (1), and industry water is added in pulping pond, the ratio adding quality and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp quality summation of industry water is 5:95, add polyethylene glycol oxide simultaneously, the quality of polyethylene glycol oxide and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp gross mass ratio are 1:35, and be uniformly mixed, obtain mixing slurry;
(3) defibrination operation: the mixing of step (2) gained slurry is transported to fiberizer, mixing slurry becomes through fiberizer and is uniformly dispersed, and has been transported in tower stand-by;
(4) upper machine: by the slurry transferring that completes in tower to paper machine, successively through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Wherein press polish operation selects soft calender, and brown paper after dehydration procedure and drying process is through being arranged vertically by 2 hard rollers are alternate with 2 soft rollers the calender unit press polish formed.
The linear pressure interval of wherein press polish operation is 263 kN/m, and the surface temperature of calender unit is 155 DEG C, and the pace of brown paper in felt wrapped roll group is 1021m/min.
Embodiment 5:
The manufacturing technique of water suction brown paper, comprises the following steps:
(1) raw material is selected: select hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp, the part by weight of hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp is: 1:10;
(2) raw material mixing making beating: hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp are rendered in pulping pond according to the ratio described in step (1), and industry water is added in pulping pond, the ratio adding quality and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp quality summation of industry water is 5.5:94.5, add polyethylene glycol oxide and high molecular wt. anionic polyacrylamide simultaneously, the gross mass of polyethylene glycol oxide and high molecular wt. anionic polyacrylamide and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp gross mass ratio are 1:40, and be uniformly mixed, obtain mixing slurry,
(3) defibrination operation: the mixing of step (2) gained slurry is transported to fiberizer, mixing slurry becomes through fiberizer and is uniformly dispersed, and has been transported in tower stand-by;
(4) upper machine: by the slurry transferring that completes in tower to paper machine, successively through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Wherein press polish operation selects soft calender, and brown paper after dehydration procedure and drying process is through being arranged vertically by 2 hard rollers are alternate with 2 soft rollers the calender unit press polish formed.
The linear pressure interval of wherein press polish operation is 290 kN/m, and the surface temperature of calender unit is 175 DEG C, and the pace of brown paper in felt wrapped roll group is 1100m/min.
Control its dependent variable homogeneous phase same, by above-mentioned 5 produced brown paper of embodiment, control quantitatively identical, be 90g/m
2carry out water imbibition test, test process is by the circle of the sizes such as above-mentioned 5 produced brown paper of embodiment cut into, and gets the circle that radius is 10cm, as calculated: 90X0.1
2x3.14=2.826g, puts into running water equal time, gets 10 seconds, then take out by brown paper, measure the quality of the brown paper after water suction, obtain as following data:
Embodiment 1: the quality of the brown paper after water suction is 5.763g;
Embodiment 2: the quality of the brown paper after water suction is 5.961g;
Embodiment 3: the quality of the brown paper after water suction is 5.842g;
Embodiment 4: the quality of the brown paper after water suction is 5.647g;
Embodiment 5: the quality of the brown paper after water suction is 5.641g.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also comprises the technical scheme be made up of above technical characteristic.
Claims (6)
1. the manufacturing technique of water suction brown paper, is characterized in that comprising the following steps:
(1) raw material is selected: select hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp, the part by weight of hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp is: 1:3 ~ 10;
(2) raw material mixing making beating: hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp are rendered in pulping pond according to the ratio described in step (1), and industry water is added in pulping pond, the ratio adding quality and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp quality summation of industry water is 3.5 ~ 5.5:94.5 ~ 96.5, and be uniformly mixed, obtain mixing slurry;
(3) defibrination operation: the mixing of step (2) gained slurry is transported to fiberizer, mixing slurry becomes through fiberizer and is uniformly dispersed, and has been transported in tower stand-by;
(4) upper machine: by the slurry transferring that completes in tower to paper machine, successively through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
2. the manufacturing technique of water suction brown paper according to claim 1, is characterized in that described press polish operation selects soft calender, the calender unit press polish of the brown paper after dehydration procedure and drying process through being combined into by hard roller and soft roller.
3. the manufacturing technique of water suction brown paper according to claim 2, it is characterized in that the linear pressure interval of described press polish operation is 175kN/m ~ 290 kN/m, the surface temperature of calender unit is 120 DEG C ~ 175 DEG C, and the pace of brown paper in felt wrapped roll group is 770m/min ~ 1100m/min.
4. the manufacturing technique of water suction brown paper according to claim 3, is characterized in that described calender unit is made up of 2 hard rollers and 2 alternate being arranged vertically of soft roller.
5. the manufacturing technique of water suction brown paper according to claim 1, it is characterized in that described step (2) is in the process be uniformly mixed, in mixing slurry, add dispersing agent for fibre, the quality of dispersing agent for fibre and hypochlorite bleaching softwood pulp and hypochlorite bleaching hardwood pulp gross mass ratio are 1:20 ~ 40.
6. the manufacturing technique of water suction brown paper according to claim 3, is characterized in that described dispersing agent for fibre selects polyethylene glycol oxide and/or high molecular wt. anionic polyacrylamide.
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| CN201410681903.0A CN104499343B (en) | 2014-11-25 | 2014-11-25 | The manufacturing process of water suction brown paper |
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| CN201410681903.0A CN104499343B (en) | 2014-11-25 | 2014-11-25 | The manufacturing process of water suction brown paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108185503A (en) * | 2017-12-18 | 2018-06-22 | 云南中烟工业有限责任公司 | A kind of preparation method for dry process reproduction tobacco leaf |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088277A (en) * | 1993-08-14 | 1994-06-22 | 黑龙江造纸厂 | Process for making highly finished kraft paper |
| CN103321084A (en) * | 2013-06-21 | 2013-09-25 | 杭州特种纸业有限公司 | Water-absorption type kraft paper and preparation process thereof |
| CN103397560A (en) * | 2013-07-29 | 2013-11-20 | 金华盛纸业（苏州工业园区）有限公司 | Two-sided offset paper for paper bags and preparation method of two-sided offset paper |
-
2014
- 2014-11-25 CN CN201410681903.0A patent/CN104499343B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088277A (en) * | 1993-08-14 | 1994-06-22 | 黑龙江造纸厂 | Process for making highly finished kraft paper |
| CN103321084A (en) * | 2013-06-21 | 2013-09-25 | 杭州特种纸业有限公司 | Water-absorption type kraft paper and preparation process thereof |
| CN103397560A (en) * | 2013-07-29 | 2013-11-20 | 金华盛纸业（苏州工业园区）有限公司 | Two-sided offset paper for paper bags and preparation method of two-sided offset paper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108185503A (en) * | 2017-12-18 | 2018-06-22 | 云南中烟工业有限责任公司 | A kind of preparation method for dry process reproduction tobacco leaf |
| CN108185503B (en) * | 2017-12-18 | 2020-06-16 | 云南中烟工业有限责任公司 | Preparation method for dry reconstituted tobacco |
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