CN101280533A - Method for preparing low quantitative paper sheets - Google Patents
Method for preparing low quantitative paper sheets Download PDFInfo
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- CN101280533A CN101280533A CNA2008100180649A CN200810018064A CN101280533A CN 101280533 A CN101280533 A CN 101280533A CN A2008100180649 A CNA2008100180649 A CN A2008100180649A CN 200810018064 A CN200810018064 A CN 200810018064A CN 101280533 A CN101280533 A CN 101280533A
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Abstract
The invention relates to a preparation method for low quantitative paper, which is characterized in that: firstly, the water-soluble PVA synthetic fiber is processed in pre-swelling; and then the plant fiber is untwined by a pulping machine; the pre-processed synthetic fiber pulp is mixed with the plant fiber pulp, and the mixed pulp is implemented with pulping processing in a PFI mill; finally, the mixed pulp is added with polyethylene glycol oxide dispersant, and paper is made by adopting the conventional way. The paper making is implemented by mixing the water-soluble PVA synthetic fiber with the plant fiber, since the water-soluble PVA synthetic fiber is a synthetic fiber, so which is easy to be flocculated in water and the bonding force among fibers is poor, thereby the paper evenness is quite poor. In the preparation method, the water-soluble PVA synthetic fiber is implemented with pre-swelling processing, and then the effective dispersant PEO or the similar additive is adopted to disperse the fiber, so that the paper evenness can be improved; the wood pulp fiber and the water-soluble PVA synthetic fiber are implemented with the pulping processing, thereby the making performance of the fiber can be enhanced, and the physical strength of which can be improved greatly.
Description
Technical field
The invention belongs to the crossing domain of synthetic fiber industry and paper industry, be specifically related to a kind of preparation method of low quantitative paper sheets.
Background technology
Now, be used for the wet strength agent resin of paper industry commonly used two big classes are arranged: formaldehyde resin and polyamide one epichlorohydrin resin (PAE).Formaldehyde resin requires than strong acidic environment production equipment to be caused corrosion on the one hand, easily decomposes on the other hand to produce free formaldehyde, and begins to reduce through the wet strength of paper behind the certain hour; Therefore the relatively mild PAE of environment for use is the main component that paper is used wet strength agent on the present domestic and international market.Yet its synthetic restriction that is subjected to cost and price all the time; and use the PAE resin can in product and white-water system, measure adsorbability organohalogen compounds (AOX); in view of the factor of environmental protection, the free of contamination wet strength agent of Development of New Generation is imperative from now on development trend.
The water-solubility PVA fiber is a kind of functionalization fibre in differentiation, not only have desirable water solution temperature and intensity, degree of stretching, good acidproof, alkaline-resisting, dry heat resistance performance are arranged, and water-soluble back is tasteless, nontoxic, the aqueous solution is the water white transparency shape, in the short period of time can natural decomposition, be the Green Product that environment is not produced any pollution.Advantages such as compare with liquid reinforcing agent simultaneously, the water-solubility PVA fiber has the retention height, and it is remarkable to strengthen effect, easy to use.And add the paper of water-solubility PVA fiber production, and can recycle fully, its water soluble fiber is dissolved in natural biology degraded in water behind the water, and environmentally safe helps environmental protection.
Summary of the invention
The object of the present invention is to provide a kind of preparation technology simple, and can improve the preparation method of a kind of low quantitative paper sheets of paper strength performance.
For achieving the above object, the technical solution used in the present invention is: at first be that the water-solubility PVA synthetic fiber of 3mm～5mm are incubated 15min～20min and carry out pre-swollen and handle with length under 50 ℃～60 ℃ water temperature; Be that 2% string is discongested with the Valley beater then with mass concentration, and then the stone roller that the adds 5.5kg cut-out of pulling an oar, beating degree is 35 ° of SR～40 ° SR, weight in wet base is 10g～15g, slurry after cutting off is concentrated the back carry out refining in the PFI fiberizer, the making beating revolution is 3000～5000 commentaries on classics, and the making beating gap is 0.4mm, refining pulp quality concentration is 8%～10%, 55 ° of SR～65 ° SR of beating degree; Secondly the vegetable-fibre slurry after pretreated synthetic fiber slurry and the making beating is mixed the back processing of pulling an oar by 1: 32.3～1: 49.0 mass ratio in PFI grinds, the making beating revolution is that 1500 commentaries on classics～2500 are changeed, the making beating gap is 0.1mm～0.3mm, refining pulp quality concentration is 8%～10%, 60 ° of SR～70 ° SR of beating degree; The polyethylene glycol oxide dispersant that adds the quality 0.05%～0.09% of mixture at last, the mass concentration of regulating slurry is 0.4%～0.8%, under 70 ℃～80 ℃ baking temperature, adopts usual manner to manufacture paper with pulp into paper.
The present invention adopts the water-solubility PVA synthetic fiber to mix with string and manufactures paper with pulp, because the water-solubility PVA fiber belongs to synthetic fiber, hydrophobicity is strong, and very easily wadding is poly-in water, and fiber combining power is poor, so formation of sheet is relatively poor; The present invention has at first carried out pre-swollen to the water-solubility PVA fiber and has handled, and adopts effective dispersant then---and PEO or come loosen collagen fibre with analog assistant, improved the evenness of paper; And wood pulp fibre and water-solubility PVA fiber have been carried out making beating handled, improve the performance of manufacturing paper with pulp of fiber, physical strength is improved greatly.
The specific embodiment
Embodiment 1, at first is that the water-solubility PVA synthetic fiber of 3mm～5mm are incubated 20min and carry out pre-swollen and handle with length under 50 ℃ water temperature; Be that 2% string is discongested with the Valley beater then with mass concentration, and then the stone roller that the adds 5.5kg cut-out of pulling an oar, beating degree is 38 ° of SR, weight in wet base is 10g, slurry after cutting off is concentrated the back carry out refining in the PFI fiberizer, the making beating revolution is 3000 commentaries on classics, and the making beating gap is 0.4mm, refining pulp quality concentration is 8%, 55 ° of SR of beating degree; Secondly the vegetable-fibre slurry after pretreated synthetic fiber slurry and the making beating is mixed the back processing of pulling an oar by 1: 32.3 mass ratio in PFI grinds, the making beating revolution is 2000 commentaries on classics, the making beating gap is 0.1mm, and refining pulp quality concentration is 8%, 60 ° of SR of beating degree; The polyethylene glycol oxide dispersant that adds the quality 0.05% of mixture at last, the mass concentration of regulating slurry is 0.5%, under 70 ℃ baking temperature, adopts usual manner to manufacture paper with pulp into paper.
Embodiment 2, at first are that the water-solubility PVA synthetic fiber of 3mm～5mm are incubated 18min and carry out pre-swollen and handle with length under 58 ℃ water temperature; Be that 2% string is discongested with the Valley beater then with mass concentration, and then the stone roller that the adds 5.5kg cut-out of pulling an oar, beating degree is 35 ° of SR, weight in wet base is 13g, slurry after cutting off is concentrated the back carry out refining in the PFI fiberizer, the making beating revolution is 4000 commentaries on classics, and the making beating gap is 0.4mm, refining pulp quality concentration is 9%, 60 ° of SR of beating degree; Secondly the vegetable-fibre slurry after pretreated synthetic fiber slurry and the making beating is mixed back processings of pulling an oar by 1: 35 mass ratio in the PFI mill, the revolution of pulling an oar is 1500 commentaries on classics, and the making beating gap is 0.2mm, and refining pulp quality concentration is 9%, 65 ° of SR of beating degree; The polyethylene glycol oxide dispersant that adds the quality 0.08% of mixture at last, the mass concentration of regulating slurry is 0.7%, under 73 ℃ baking temperature, adopts usual manner to manufacture paper with pulp into paper.
Embodiment 3, at first are that the water-solubility PVA synthetic fiber of 3mm～5mm are incubated 16min and carry out pre-swollen and handle with length under 52 ℃ water temperature; Be that 2% string is discongested with the Valley beater then with mass concentration, and then the stone roller that the adds 5.5kg cut-out of pulling an oar, beating degree is 40 ° of SR, weight in wet base is 15g, slurry after cutting off is concentrated the back carry out refining in the PFI fiberizer, the making beating revolution is 5000 commentaries on classics, and the making beating gap is 0.4mm, refining pulp quality concentration is 10%, 65 ° of SR of beating degree; Secondly the vegetable-fibre slurry after pretreated synthetic fiber slurry and the making beating is mixed back processings of pulling an oar by 1: 40 mass ratio in the PFI mill, the revolution of pulling an oar is 2300 commentaries on classics, and the making beating gap is 0.3mm, and refining pulp quality concentration is 10%, 68 ° of SR of beating degree; The polyethylene glycol oxide dispersant that adds the quality 0.06% of mixture at last, the mass concentration of regulating slurry is 0.4%, under 78 ℃ baking temperature, adopts usual manner to manufacture paper with pulp into paper.
Embodiment 4, at first are that the water-solubility PVA synthetic fiber of 3mm～5mm are incubated 19min and carry out pre-swollen and handle with length under 55 ℃ water temperature; Be that 2% string is discongested with the Valley beater then with mass concentration, and then the stone roller that the adds 5.5kg cut-out of pulling an oar, beating degree is 36 ° of SR, weight in wet base is 12g, slurry after cutting off is concentrated the back carry out refining in the PFI fiberizer, the making beating revolution is 4500 commentaries on classics, and the making beating gap is 0.4mm, refining pulp quality concentration is 9.5%, 63 ° of SR of beating degree; Secondly the vegetable-fibre slurry after pretreated synthetic fiber slurry and the making beating is mixed the back processing of pulling an oar by 1: 45 mass ratio in PFI grinds, the making beating revolution is 1800 commentaries on classics, the making beating gap is 0.3mm, and refining pulp quality concentration is 9.5%, 70 ° of SR of beating degree; The polyethylene glycol oxide dispersant that adds the quality 0.09% of mixture at last, the mass concentration of regulating slurry is 0.86%, under 75 ℃ baking temperature, adopts usual manner to manufacture paper with pulp into paper.
Embodiment 5, at first are that the water-solubility PVA synthetic fiber of 3mm～5mm are incubated 15min and carry out pre-swollen and handle with length under 60 ℃ water temperature; Be that 2% string is discongested with the Valley beater then with mass concentration, and then the stone roller that the adds 5.5kg cut-out of pulling an oar, beating degree is 39 ° of SR, weight in wet base is 14g, slurry after cutting off is concentrated the back carry out refining in the PFI fiberizer, the making beating revolution is 3500 commentaries on classics, and the making beating gap is 0.4mm, refining pulp quality concentration is 8.5%, 58 ° of SR of beating degree; Secondly the vegetable-fibre slurry after pretreated synthetic fiber slurry and the making beating is mixed back processings of pulling an oar by 1: 9 mass ratio in the PFI mill, the revolution of pulling an oar is 2500 commentaries on classics, and the making beating gap is 0.2mm, and refining pulp quality concentration is 8.5%, 62 ° of SR of beating degree; The polyethylene glycol oxide dispersant that adds the quality 0.07% of mixture at last, the mass concentration of regulating slurry is 0.6%, under 80 ℃ baking temperature, adopts usual manner to manufacture paper with pulp into paper.
The paper that preparation method of the present invention makes is tested, and the physical property testing result shows, physical strength especially wet strength has had and increases substantially.Wherein, tensile index has improved 9.33%, and wet tensile index has improved 16.74%, and tear index has improved 3.61%.Find that simultaneously oil absorbency and paper that adding water-solubility PVA synthetic fiber do not influence paper have good dimensional stability.
Claims (1)
1, a kind of preparation method of low quantitative paper sheets is characterized in that:
1) at first be that the water-solubility PVA synthetic fiber of 3mm～5mm are incubated 15min～20min and carry out pre-swollen and handle under 50 ℃～60 ℃ water temperature with length;
2) be that 2% string is discongested with the Valley beater then with mass concentration, and then the stone roller that the adds 5.5kg cut-out of pulling an oar, beating degree is 35 ° of SR～40 ° SR, weight in wet base is 10g～15g, slurry after cutting off is concentrated the back carry out refining in the PFI fiberizer, the making beating revolution is 3000～5000 commentaries on classics, and the making beating gap is 0.4mm, refining pulp quality concentration is 8%～10%, 55 ° of SR～65 ° SR of beating degree;
Secondly 3) vegetable-fibre slurry after pretreated synthetic fiber slurry and the making beating is mixed the back processing of pulling an oar by 1: 32.3～1: 49.0 mass ratio in PFI grinds, the making beating revolution is that 1500 commentaries on classics～2500 are changeed, the making beating gap is 0.1mm～0.3mm, refining pulp quality concentration is 8%～10%, 60 ° of SR～70 ° SR of beating degree;
4) add the polyethylene glycol oxide dispersant of the quality 0.05%～0.09% of mixture at last, the mass concentration of regulating slurry is 0.4%～0.8%, under 70 ℃～80 ℃ baking temperature, adopts usual manner to manufacture paper with pulp into paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100180649A CN101280533A (en) | 2008-04-25 | 2008-04-25 | Method for preparing low quantitative paper sheets |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100180649A CN101280533A (en) | 2008-04-25 | 2008-04-25 | Method for preparing low quantitative paper sheets |
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| CN101280533A true CN101280533A (en) | 2008-10-08 |
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| CNA2008100180649A Pending CN101280533A (en) | 2008-04-25 | 2008-04-25 | Method for preparing low quantitative paper sheets |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454130A (en) * | 2011-10-29 | 2012-05-16 | 常熟市华海电子有限公司 | Paper for printer |
| CN103397567A (en) * | 2013-08-05 | 2013-11-20 | 金东纸业（江苏）股份有限公司 | papermaking technology |
| CN105525534A (en) * | 2015-12-31 | 2016-04-27 | 上海全宇生物科技遂平有限公司 | High-strength special paper and preparation method thereof |
-
2008
- 2008-04-25 CN CNA2008100180649A patent/CN101280533A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454130A (en) * | 2011-10-29 | 2012-05-16 | 常熟市华海电子有限公司 | Paper for printer |
| CN103397567A (en) * | 2013-08-05 | 2013-11-20 | 金东纸业（江苏）股份有限公司 | papermaking technology |
| CN105525534A (en) * | 2015-12-31 | 2016-04-27 | 上海全宇生物科技遂平有限公司 | High-strength special paper and preparation method thereof |
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Open date: 20081008 |