CN87108008A - Adopt novel flocculating agent for glue-applicating to carry out neutrality-alkaline paper-making - Google Patents
Adopt novel flocculating agent for glue-applicating to carry out neutrality-alkaline paper-making Download PDFInfo
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- CN87108008A CN87108008A CN 87108008 CN87108008A CN87108008A CN 87108008 A CN87108008 A CN 87108008A CN 87108008 CN87108008 CN 87108008 CN 87108008 A CN87108008 A CN 87108008A CN 87108008 A CN87108008 A CN 87108008A
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Abstract
Adopt novel flocculating agent for glue-applicating to carry out neutrality-alkaline paper-making, relate to and attach material carries out papermaking in wet pulp production technology.The present invention adopts aluminium polychloride, and { chemical general formula is [Al
2(OH)
nCl
6-n]
m, m in the formula≤10, n is that 1～5} is a flocculating agent for glue-applicating, adds in the pulping and regulates pulping pH and carry out neutrality～alkaline paper-making with finite concentration.The novel flocculating agent for glue-applicating low price of this kind is drawn materials easily, can be widely used in the paper of various applying glues.Be used for neutrality-alkaline paper-making, can improve paper quality, prevent equipment acid corrosion and fouling, reduce material and energy resource consumption.
Description
The present invention relates to attach material carries out papermaking in wet pulp production technology, particularly relate to a kind of novel flocculating agent for glue-applicating carries out neutrality～alkaline paper-making in wet pulp production technology that attaches.
Flocculating agent for glue-applicating can make rosin breast precipitation and keep on fiber, and drying forms glued membrane, and both play glue blending function jointly.It is sizing agent that traditional acid papermaking adopts the rosin breast, and aluminum sulfate is flocculating agent for glue-applicating, and the consumption of rosin breast can not be lower than 0.6% whole process of production of paper pulp absolute dry weight can only carry out under acid condition.Pulping PH is 4.5～5.5, and the PH of last papermaking wire-cloth is about about 5.5, and plain boiled water PH becomes paper PH also to be lower than 7.0 about about 6.0.
Compare acid papermaking exists paper making equipment the acid corrosion phenomenon is arranged with neutrality～alkaline paper-making; The eyelet of suction couch roll, papermaking wire-cloth, felt etc. easily produce the stifled eye of sulfate scale or fouling, need be through common acid, neutralizing treatment or replacings, thereby cause that downtime is long, and precious materials consumptions such as papermaking wire-cloth, felt are big, and plain boiled water is seriously polluted; The paper of being produced simultaneously has problems such as intensity is low, aging fast.
Begin from the seventies, more American-European countries adopt alkyl ketene dimer or alkenyl succinic anhydride etc. to realize neutrality～alkaline paper-making, and China does not have the industrial products production of these industrial chemicals at present, and import price is expensive again.Though some producer of China once adopted paraffin, stearic acid, boric acid, animal glue casein and oxidized starch etc. to make sizing agents such as wax size or rosin wax size, aluminum sulfate is flocculating agent for glue-applicating, carboxymethyl cellulose and polyvinyl alcohol or cationic-type polyacrylamide are retention agent, can make pulping PH reach 6.0～6.5, realize neutral papermaking.But because of required industrial chemicals wide in variety, the cost height, this factory only be used for dictionary and thin indian paper etc. sell the high price and the less demanding paper of degree of sizing, be not suitable for extensive use on other paper.
The purpose of this invention is to provide a kind of inexpensive and easy novel flocculating agent for glue-applicating of drawing materials, be used for neutrality～alkaline paper-making,, prevent the paper making equipment acid corrosion, reduce precious materials consumption to reduce cost to improve paper quality.
The present invention is achieved in that
In paper, after by present technique field common process paper making raw material being broken into paper pulp, again through following technological process: paper pulp after beating → adding rosin breast → mix → add flocculating agent for glue-applicating is also regulated pulping pH value → mix → go into machine chest → paper machine to copy paper.Flocculating agent for glue-applicating of the present invention is that { the another name aluminium chloride, chemical general formula is (AL to aluminium polychloride
2(OH)
nCL
6-n)
m, m in the formula≤10, n is 1～5 }.
Earlier 0.4～1.2% of adding paper pulp absolute dry weight rosin breast in breaking back paper pulp mixes, and adds paper pulp absolute dry weight 0.3～2.0% again, but is preferably 0.6～1.5% aluminium polychloride (with AL
2O
3Content 100%, as follows), mixing the back and regulating pulping PH is 6.0～7.2.
Aluminium polychloride with liquid or solid-state adding all can, add but preferably be made into 0.01～0.03% solution.The consumption of aluminium polychloride is different and different with the consumption of production paper grades and sizing agent rosin breast according to paper pulp, simultaneously owing to AL in the general industry aluminium polychloride
2O
3Content is not 100%, so also should be according to AL
2O
3Concrete content determines the addition of industrial aluminium polychloride.
Retention agent helps the applying glue sizing material to be retained on the fiber, so in the paper machine paper-making process, can add an amount of retention agent such as cationic-type polyacrylamide, cationic starch etc. simultaneously.Also can be not with retention agent.
The used gum rosin of the present invention can be common rosin glue, Pexol, dispersion rosin size and sizepine W etc.
Because adopting aluminium polychloride is that flocculating agent for glue-applicating carries out papermaking, can make pulping pH bring up to 6.0～7.2, last papermaking wire-cloth pH brings up to about 7.0, and plain boiled water pH is near industrial water pH.Under property～alkali condition, prevented the acid corrosion of equipment hereinto; The fouling of stopping up the suction couch roll eyelet is come off voluntarily and remain true qualities, papermaking wire-cloth, felt do not produce fouling, thereby reduce the time of cleaning and changing spare unit, precious materials such as copper papermaking wire-cloth, the consumption of felt descends, and the paper machine is prolonged the duration of runs, brings output to improve, cost descends, and only the reduction of flocculating agent for glue-applicating and copper papermaking wire-cloth consumption just can make paper cost per ton descend 10～40 yuan; Intensity, the bulk of paper improve, and be more obvious to the fragility role of improving straw pulp especially, and the pleasant softness of paper is improved; Because it is neutral that paper pH reaches, neutralized paper is difficult for aging, can prolong the book life of this paper; The intensity of paper improves, and can reduce beating degree, reduces energy consumption; The pollution level of plain boiled water also descends greatly; The also available calcium carbonate of neutral sizing is made filler.Helping improving into the paper whiteness like this, improve the printability of printing, is very favourable to the high outlet paper of straw pulp production whiteness.
The present invention need not increase equipment, does not change technological process, and is easy to operate, and required flocculating agent for glue-applicating is drawn materials easily, and low price can be widely used in the paper of various applying glues.
Be one embodiment of the present of invention below:
A kind of method that adopts aluminium polychloride to carry out a neutral alkaline bleach liquor sizing production sketch drawing paper as flocculating agent for glue-applicating.Adopting 20% import pulp and 80% Straw Pulp is raw material, break into paper pulp by present technique field common process after, add the rosin breast with the preparation of common rosin glue of paper pulp absolute dry weight 0.4%, mix, add the AL of paper pulp absolute dry weight 5% again
2O
3Content is 13% liquid industry aluminium polychloride, mix, and to regulate the pulping pH value is 6.5～7.0, and go into machine chest, dexter feeder is copied paper again.Adding concentration at paper machine slurry flowing box when the paper machine is copied paper is that 0.01% cationic-type polyacrylamide is made retention agent, and addition is paper 10kg per ton.Papermaking wire-cloth pH can reach 7.0～7.2 on this embodiment, and plain boiled water pH value is 7.0～7.4.
Claims (2)
1, adopt novel flocculating agent for glue-applicating to carry out neutrality～alkaline paper-making, after by present technique field common process raw material being broken into paper pulp, again through following technological process: paper pulp after beating → adding rosin breast → mix → add flocculating agent for glue-applicating is also regulated pulping pH value → mix → go into machine chest → paper machine to copy paper (can add retention agent simultaneously), it is characterized in that flocculating agent for glue-applicating is that { chemical general formula is [Al to aluminium polychloride
2(OH)
nCl
6-n]
m, m in the formula≤10, n is 1～5}, and earlier 0.4～1.2% of adding paper pulp absolute dry weight rosin breast in breaking back paper pulp mixes, and 0.3～2.0% the aluminium polychloride that adds the paper pulp absolute dry weight again (is pressed AL
2O
3Content 100%), mixing and regulate pulping PH is 6.0～7.2.
2, the novel flocculating agent for glue-applicating of employing according to claim 1 carries out neutrality～alkaline paper-making, it is characterized in that the aluminium polychloride addition is preferably 0.6～1.5% of paper pulp absolute dry weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87108008 CN87108008A (en) | 1987-11-21 | 1987-11-21 | Adopt novel flocculating agent for glue-applicating to carry out neutrality-alkaline paper-making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87108008 CN87108008A (en) | 1987-11-21 | 1987-11-21 | Adopt novel flocculating agent for glue-applicating to carry out neutrality-alkaline paper-making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87108008A true CN87108008A (en) | 1988-06-15 |
Family
ID=4816321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87108008 Pending CN87108008A (en) | 1987-11-21 | 1987-11-21 | Adopt novel flocculating agent for glue-applicating to carry out neutrality-alkaline paper-making |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87108008A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081706C (en) * | 1998-03-19 | 2002-03-27 | 贺江川 | Corrugated paper pulp water penetrating agent |
| CN100577414C (en) * | 2003-08-01 | 2010-01-06 | 大王制纸株式会社 | Carrying band material and carrying band |
| CN1851123B (en) * | 2006-05-30 | 2012-02-22 | 上海埃格环保科技有限公司 | Glueing method for papermaking process |
| CN107503234A (en) * | 2017-08-18 | 2017-12-22 | 首都博物馆 | A kind of neutral aluminium salt sizing precipitant and preparation method and application |
-
1987
- 1987-11-21 CN CN 87108008 patent/CN87108008A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081706C (en) * | 1998-03-19 | 2002-03-27 | 贺江川 | Corrugated paper pulp water penetrating agent |
| CN100577414C (en) * | 2003-08-01 | 2010-01-06 | 大王制纸株式会社 | Carrying band material and carrying band |
| CN1851123B (en) * | 2006-05-30 | 2012-02-22 | 上海埃格环保科技有限公司 | Glueing method for papermaking process |
| CN107503234A (en) * | 2017-08-18 | 2017-12-22 | 首都博物馆 | A kind of neutral aluminium salt sizing precipitant and preparation method and application |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |