CN101831824A - Preparation method for grading waste pulp during producing kraft paper - Google Patents
Preparation method for grading waste pulp during producing kraft paper Download PDFInfo
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- CN101831824A CN101831824A CN201010175997A CN201010175997A CN101831824A CN 101831824 A CN101831824 A CN 101831824A CN 201010175997 A CN201010175997 A CN 201010175997A CN 201010175997 A CN201010175997 A CN 201010175997A CN 101831824 A CN101831824 A CN 101831824A
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Abstract
The invention discloses a preparation method for grading waste pulp during producing kraft paper, which comprises the processes of hydraulic pulping, high-concentration impurity removal, rough screening, sand removal, selection and residue removal, graded pulp formation in turn, wherein the graded pulp formation process comprises the following steps of: 1) performing fiber grading on an obtained product after the selection and residue removal; 2) performing low-concentration residue removal on the short fiber obtained by grading to remove light and heavy impurities respectively, and screening the short fiber to remove glue and wax points so as to obtain pulp for a lining between the core layer and the surface layer of the kraft paper; and 3) pulping the long fiber obtained by grading, and adding wet chemicals into the long fiber to obtain pulp for bottom and core layers of the kraft paper. When the pulp for lining, the pulp for the bottom and core layers and wood pulp are fed into a paper machine working section to perform a paper forming process such as manufacturing paper with pulp and the like so as to produce the kraft paper, the using amount of the wood pulp can be greatly saved, and the produced kraft paper has good surface property and physical property. Compared with a precise treating method adopting a thermal dispersion system and the like, the method has the advantages of investment saving, low production cost and the like.
Description
Technical field
The invention belongs to the paper machine technology field, particularly a kind of production method of craft paper.
Background technology
Craft paper is with face, core, the three layers of packing paperboard that carries out the interlayer combination in the end.The raw material of present domestic craft paper face, core, the corresponding three layers of base material in the end is commonly wood pulp, secondary stock, secondary stock, and the secondary stock preparation method in craft paper production is by operations such as hydraulic pulping, high dense removal of impurities, scalping, desanding, selected slagging-off, making beating, interpolation wet-end chemicals mostly with waste paper (based on waste paperboard).The secondary stock of this method preparation, its fiber is manufactured paper with pulp with regard to directly entering paper machine workshop section together with wood pulp without any processing, thereby causes at the excessive (0.03kg/m of craft paper production process surface layer wood pulp addition
2, otherwise can cause paper defects such as show-through, intensity reduction so that badly influence the surface property and the physical property of craft paper.
In order to address the above problem, reduce the wood pulp use amount in the craft paper production process, the extension amount that improves secondary stock has become the striving direction of craft paper production field.The at present existing producer will through after the selected slagging-off operation thing adopt fine processing such as hot decentralized system, and then follow wood pulp to enter paper machine workshop section together and manufacture paper with pulp, thereby make wood pulp extension amount can accomplish 0.025kg/m
2, saved the wood pulp consumption greatly.But this not disposal cost of method costliness, and equipment purchasing expense big (needing import), thereby increased production cost greatly.
Summary of the invention
Purpose of the present invention is exactly the secondary stock grading system Preparation Method that provides at the situation of above-mentioned prior art in a kind of senior craft paper production.
The present invention includes operations such as the hydraulic pulping that carries out successively, high dense removal of impurities, scalping, desanding, selected slagging-off and classification pulping, and it becomes slurry process to comprise the following steps:
1, carries out fiber classification to getting thing after the selected slagging-off;
2, the staple fibre that obtains behind the fiber classification is hanged down dense slagging-off to remove light, heavy seeds respectively, then again row filter removing sicker and wax point, as entering craft paper sandwich layer that paper machine workshop section manufactures paper with pulp and the lining between the surface layer together with wood pulp with slurry;
3, corresponding wet-end chemicals is added in the long fiber that obtains behind the fiber classification back of pulling an oar, as enter together with wood pulp craft paper bottom that paper machine workshop section manufactures paper with pulp with slurry and sandwich layer with starching.
Craft paper production prepared in accordance with the present invention enters paper machine workshop section with secondary stock together with wood pulp and manufactures paper with pulp when producing craft paper, not only can save the consumption (0.025kg/m of wood pulp greatly
2Below), and the craft paper of being produced has surface property and physical property preferably.And the present invention has reduced investment, produces the product low cost and other advantages for fine processing methods such as the hot decentralized system of employing.
The specific embodiment
Below in conjunction with the specific embodiment of the present invention the present invention is further introduced.
Successively: 1, litter decoration is put into hydrabrusher and carried out hydraulic pulping.2, change in the HC Cleaner and remove the gred.3, cross scalping.4, desanding.5, selected slagging-off.6, cross classifying screen: 1) the higher staple fibre of cleanliness factor that classifying screen is told hangs down dense slagging-off processing successively to remove light, heavy seeds respectively, sieves and removes sicker and wax point, makes lining fully with starching; 2) wet-end chemicals is pulled an oar, added to the long fiber that classifying screen is not told successively, makes bottom and sandwich layer fully with starching.
The lining that said method is made enters paper machine workshop section with slurry and the end, sandwich layer together with slurry and wood pulp and manufactures paper with pulp etc. and to become paper technology, promptly can be made into senior craft paper.For guaranteeing bonding between craft paper surface layer and the lining, can add interlayer spray auxiliary agent bond strength and other physical property to improve craft paper.
The craft paper of present embodiment preparation, its wood pulp extension amount is 0.025kg/m
2
Claims (1)
1. the secondary stock grading system Preparation Method during a senior craft paper is produced includes operations such as the hydraulic pulping that carries out successively, high dense removal of impurities, scalping, desanding, selected slagging-off and classification pulping, it is characterized in that the described slurry process that is classified into comprises the following steps:
1) carries out fiber classification to getting thing after the selected slagging-off;
2) staple fibre that obtains behind the fiber classification is hanged down dense slagging-off to remove light, heavy seeds respectively, then again row filter removing sicker and wax point, as entering craft paper sandwich layer that paper machine workshop section manufactures paper with pulp and the lining between the surface layer together with wood pulp with slurry;
3) corresponding wet-end chemicals is added in the long fiber that obtains behind the fiber classification back of pulling an oar, as enter together with wood pulp craft paper bottom that paper machine workshop section manufactures paper with pulp with slurry and sandwich layer with starching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010175997A CN101831824A (en) | 2010-05-12 | 2010-05-12 | Preparation method for grading waste pulp during producing kraft paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010175997A CN101831824A (en) | 2010-05-12 | 2010-05-12 | Preparation method for grading waste pulp during producing kraft paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101831824A true CN101831824A (en) | 2010-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010175997A Pending CN101831824A (en) | 2010-05-12 | 2010-05-12 | Preparation method for grading waste pulp during producing kraft paper |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493263A (en) * | 2011-12-16 | 2012-06-13 | 东莞理文造纸厂有限公司 | Pulping equipment and pulping method for cow card paper |
| CN102704301A (en) * | 2012-06-19 | 2012-10-03 | 连城县东方经济开发有限公司 | Process of coated kraft waste paper recycled intermediary paper |
| CN103255664A (en) * | 2013-04-20 | 2013-08-21 | 浙江荣晟环保纸业股份有限公司 | Process for extracting high-quality fiber from reclaimed waste paper |
| CN111118956A (en) * | 2019-12-23 | 2020-05-08 | 中山联合鸿兴造纸有限公司 | Production method of regenerated high-strength corrugated base paper with ultralow gram weight |
| CN114059377A (en) * | 2021-11-23 | 2022-02-18 | 山鹰国际控股股份公司 | Method for producing cardboard paper by using waste paper pulp |
-
2010
- 2010-05-12 CN CN201010175997A patent/CN101831824A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493263A (en) * | 2011-12-16 | 2012-06-13 | 东莞理文造纸厂有限公司 | Pulping equipment and pulping method for cow card paper |
| CN102493263B (en) * | 2011-12-16 | 2014-04-09 | 东莞理文造纸厂有限公司 | Pulping equipment and pulping method for cow card paper |
| CN102704301A (en) * | 2012-06-19 | 2012-10-03 | 连城县东方经济开发有限公司 | Process of coated kraft waste paper recycled intermediary paper |
| CN103255664A (en) * | 2013-04-20 | 2013-08-21 | 浙江荣晟环保纸业股份有限公司 | Process for extracting high-quality fiber from reclaimed waste paper |
| CN103255664B (en) * | 2013-04-20 | 2016-05-04 | 浙江荣晟环保纸业股份有限公司 | A kind of technique of extracting high-quality fiber from reclaimed waste paper |
| CN111118956A (en) * | 2019-12-23 | 2020-05-08 | 中山联合鸿兴造纸有限公司 | Production method of regenerated high-strength corrugated base paper with ultralow gram weight |
| CN114059377A (en) * | 2021-11-23 | 2022-02-18 | 山鹰国际控股股份公司 | Method for producing cardboard paper by using waste paper pulp |
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Open date: 20100915 |