CN1594731A - Fine fiber reinforced paper - Google Patents
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- CN1594731A CN1594731A CN 03156597 CN03156597A CN1594731A CN 1594731 A CN1594731 A CN 1594731A CN 03156597 CN03156597 CN 03156597 CN 03156597 A CN03156597 A CN 03156597A CN 1594731 A CN1594731 A CN 1594731A
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Abstract
The invention provides a fine fiber reinforced paper and the producing method thereof. The method comprises: corresponding to the paper dry weight (wt.%), adding 0.2-10 wt.% of short fine polymer fibers with the average length of 3-20mm, titer unit of 0.5-2d as reinforcing fiber, 0.02-1% of polymer surface activator, 0.1-3% of starch resin, 0.2-2% of thermoplastic resin latex. The invention improves the cellulose fiber of the paper, enhances the connection property between fiber and unorganic filler, and increases the paper strength.
Description
Technical field
The present invention relates to a kind of microfibre and strengthen paper, the preparation method of especially this paper.
Technical background
Based on the consideration of environmental protection and resource reproducible utilization, the increasing proportion of reclaimed fibre is used in papermaking, as the cellulose fibre that is obtained by the recovery paper.But along with increasing of fiber reuse number of times, its fibre structure damage increases, and influences paper strength thus.China is because the timber resources shortage, wood pulp for paper is dependence on import basically, use the paper pulp ratio of annual plant and reclaimed fibre preparation very big, especially for the packaging corrugated paper, basically adopt plant stalk fiber and reclaimed fibre, but the paper strength problem for package paper, just seems more outstanding.
At improving paper strength, have at present and add the water dispersible high polymer as binding agent with add method and technology organic or that inorfil strengthens.The latex binder (Latex binder) that US5622786 adopts the copolymer of polyacrylic acid and derivatives class, butadiene-styrene rubber, propionitrile rubber or acrylonitrile and butadiene copolymer, polyvinyl chloride, polyvinyl acetate, vinyl chloride and acetate ethylene copolymer, vinyl acetate and vinyl acrylate to form, its consumption is 15～60% of a paper dry weight, thereby the adhesion between the enhancing paper fibre improves tension and tearing strength.US5595828 is on the basis of the latex binder of interpolation 15～60%, (percentage composition all refers to the weight percentage with respect to the paper dry weight in the literary composition to add 5～25% polyester fibers, except indicating especially), comprehensively improve the extension at break and the tearing strength of paper.In these technology, the addition of latex and fiber is bigger, and the cost of producing paper is higher.
The polyacrylamide cationoid flocculating agent that US5679443 releases, in conjunction with 2～30% resinoid bonds (resin binder), calcium carbonate is stuffing, add glass fibre and rock wool fibers, make the fiber reinforcement cardboard, it strengthens the consumption that effect mainly depends on binding agent, and is still unfavorable for reducing cost.Among the US55066046, addible fiber also comprises ceramic fibre, and carbon fiber and metal fibre are as the fortifying fibre of paper, and adding cement is as aggregates (aggregate).This is difficult to implement on production technology, the cement composition easily deposition occurs in reserve pit (or claiming the slurry well) or storage slurry well, not only make the quality uniformity of finished product influenced, also may cause reserve pit (or claiming the slurry well) or storage slurry well impaired because of the cement deposition, and this method only is suitable for making cardboard, is unsuitable for making paper.
The string that papermaking is used, average length are about and are 130mm between 0.5～10mm most, and average diameter is at (wood pulp fibre is mainly between 20 to 40 μ m) between 1～100 μ m, and its fiber can be fiber and the fiber micro wire that comprises lignin.The fortifying fibre average diameter of adding should less than or approach the average diameter of cellulose fibre, paper is strengthened after its harsh feeling of degree of changing not.The fiber of equivalent weight percentage composition.The network of fibers skeleton that crude fibre forms in paper is far fewer than microfibre, if fiber modulus is identical with intensity, it strengthens effect also not as microfibre.And more slightly more than 20 μ m, the fiber compliance is poor for inorfil such as glass fibre, rock wool fibers, ceramic fibre average diameter, easily makes paper manifest harsh feeling.
Chinese patent CN1153244A proposes only with thread or reticular nylon wire or wire reinforced fibre paper, because of chemical fibre surface ubiquity hydrophobicity, lacks chemical affinity with the surface of the stronger cellulose fibre of hydrophily, strengthens DeGrain.Wire and wire netting strengthen paper, if not the very high kind of added value, are uneconomic.
With microfibre as reinforcing material, its Denier range of the microfibre of indication is: 0.5≤d≤2, and (Denier (d) is a unit of measuring filametntary fiber number, when 9000 meters fibre weight are 1 gram, fiber number is 1d), in fibre reinforced concrete, widely use.Patent CN1071652A has released the concrete product of the polypropylene microfibre enhancing moulding of high-crystallinity, and average fiber length is 2～15mm.Result of the test according to us shows, strengthen concrete product with synthetic fiber merely, on the fiber filaments of its plane of disruption, substantially do not stick the concrete composition, be that fiber surface fails to form stronger chemical bond power with concrete substrate, its humidification is mainly the mechanical force that the fiber rack is constituted.In case matrix stress is concentrated and ftractureed, fiber can strengthen effect and have a greatly reduced quality from extracting out in conjunction with getting the not too firm matrix.Strengthen situation about occurring the concrete product technology from microfibre, can infer, strengthen paper strength with microfibre, the necessary modification of fiber surface, to increase the chemical affinity between synthetic microfibre and the cellulose, improvement strengthens effect.The combined with fluorescent microfibre can avoid the fluorescent ink printing easily by imitated phenomenon, does not have radial expansion because the fluorescence that the fluorescence fine count fiber produces under uviol lamp is elongated, and fluorescent ink is printed with the radial expansion phenomenon.
In order to solve problems such as the above-mentioned paper compliance, process implementing, cellulose fibre and the fortifying fibre interface binding power that occur in the fiber reinforcement paper technology, paper manufacturing cost, the spy finishes the present invention.
Summary of the invention
It is lower to the purpose of this invention is to provide a kind of cost, be easy on the technology realize, and smooth surface, and add fortifying fibre combines firm microfibre enhancing paper with the paper fibre cellulose fiber manufacture method.
The combined with fluorescent technology can prepare anti-forge paper, and the fluorescence that the fluorescence fine count fiber produces under uviol lamp is elongated and do not have radial expansion, and fluorescent ink is printed with the radial expansion phenomenon, can avoid the fluorescent ink printing easily by imitated phenomenon.
Design of the present invention is such:
The employing fibre number is the micro polymer fine fibre of 0.5～2d (Denier), and average length is at 3～20mm; Addition is between 0.2～10%, and the best is 0.5～5%; Between the cellulose fibre of paper, form fiber interpenetrating networks skeleton by the micro polymer fine fibre; And add 0.02～1% polymeric surfactant, make micro polymer fine fibre surface modification, the adhesion between enhancing and the cellulose fibre, the optimum addition of polymeric surfactant is 0.05～0.5%; The starch of interpolation 0.1～3% or modified starch are to increase the bond strength between cellulose fibre, cellulose and the stuffing, and optimum amount is 0.5～1%; In the manufacture process of higher paper of desired strength such as package paper, can also add 0.2～2% thermoplastic resin fat liquor, as the usefulness of compound enhancing.Add CaCO
3, TiO
2As inorganic fillings, improve the opacity and the writing quality of paper.
Main feature of the present invention:
1. add the humidification of the microfibre of average length between 3～20mm to the paper fibre element, be that consumption seldom just can form high-density fiber IPN skeleton in the plain matrix of paper fibre, and the average diameter of microfibre is much smaller than the average diameter of most cellulose fibres, 0.5d and the average diameter of the polypropylene microfibre of 2d (Denier) is respectively 7～9 μ m and 15～18 μ m, do not influence the roughness and the writing quality of paper.In the oven dry cylinder or steam drying process of paper moulding, the temperature of oven dry cylinder generally between 110～180 ℃, is looked different stationery and is changed its corresponding bake out temperature and paper gait of march, generally more than 240m/min; In the technology of steam drying, vapor (steam) temperature between 150～200 ℃, the gait of march of paper lower about 170m/min, high can reach 1600～2000m/min; The microfibre that is added partly melts, and extruding bonds together with cellulose fiber peacekeeping microfibre through rolling; The interpenetrating networks skeleton structure, the phenomenon that bonds mutually, it is more remarkable that the effect of polymeric surfactant makes microfibre strengthen effect to paper.
Be used for the microfibre that paper strengthens, can use polypropylene, polyvinyl chloride, polyacrylonitrile, polyester, polyvinyl formal, nylon and corresponding high polymer thereof to be mixed and made into the microfibre of high polymer alloy spinning, its Denier range is: 0.5≤d≤2.Can add CaCO in the fibre spinning process
3, TiO
2, fluorescent material is as stuffing.The addition of microfibre is 0.2～10%, and optimum quantum of utilization is 0.5～5%, and several fibers can mix use.Be used for the microfibre that paper strengthens, can all or part of use adding the fluorescent materials fiber, making paper when strengthening, have anti-counterfeiting performance.
2. interpolation polymeric surfactant, mainly play and strengthen the microfibre surface modification, improve the chemical bond power between microfibre and the paper fibre cellulose fiber, being beneficial to microfibre evenly disperses between the paper fibre cellulose fiber, and high molecular polymer surfactant, have flocculation, help reducing the paper pulp middle short fiber and loss inorganic fillings, reduce the water treatment load.The polymeric surfactant degree of polymerization is too little, can cause that the chemical affinity between the paper fibre cellulose fiber descends, and reduces paper strength on the contrary.Be advisable to select for use mean molecule quantity to be preferably greater than 100,000 polymeric surfactant greater than 10,000.Can adopt polyacrylamide, polymethylacrylic acid and polyvinyl alcohol as polymeric surfactant.Add in reserve pit (slurry well) or the storage slurry well in 2～8% the aqueous solution mode of being mixed with.The polymeric surfactant addition is 0.02～1%, and optimum quantum of utilization is 0.05～0.5%.
3. add starch and modified starch resin, be intended between the fortifying fibre cellulose fiber, and the adhesion between fiber and the inorganic filler.Starch and modified starch resin, the starch that is rich in side chain with employing is good.Potato starch, tapioca, cornstarch, wheaten starch and rice starch all can be selected for use; The amylopectin content of potato starch is higher relatively, can pay the utmost attention to.The starch conversion resin is by esterification, acid hydrolysis, oxidation, crosslinked and enzyme effect and the starch of modification.Addition is 0.1～3%, and optimum quantum of utilization is 0.5～1%.Starch is well-done, and 2～8% the aqueous solution mode of being mixed with adds in reserve pit (slurry well) or the storage slurry well.
4. add the emulsion of thermoplastic resin,, strengthen the adhesion between microfibre, cellulose fibre, the inorganic filler, improve paper strength as composite fortifier.
The emulsion of thermoplastic resin can adopt polymethacrylates, polyacrylate, phenolic resins, polyvinyl acetate, acrylate copolymer, polyvinyl acetate vinyl chloride copolymer, polyvinyl acetate styrol copolymer, polyvinyl acetate ethylene copolymer, polyvinyl acetate emulsion, modified rosin resin emulsion and combination thereof.
The addition of thermoplastic resin fat liquor is 0.2～2%, and being 3～15% emulsion mode with solid content adds in the slurry well (or claiming reserve pit) of papermaking streamline or storage slurry well.Concentration Tai Gaoyi separates out precipitation, is unfavorable for disperseing.
5. inorganic fillings is mainly used in the opacity of paper.Can adopt titanium dioxide, calcium carbonate as stuffing, its average grain diameter should be at≤30um.The kind that has adopts wood pulp or straw pulp true qualities, can not add inorganic fillings.The addition of inorganic fillings is 0～30%.
6. the cellulose fibre of paper can be a wood pulp, and straw pulp is provided by paper pulp that reclaims paper system and composition thereof.70～98% of the cellulose fibers comprise paper dry weight that is provided.
The specific embodiment
Below in conjunction with embodiment, this is described further with bright, embodiment does not make qualification to invention.
Embodiment 1:
Prepare 95g/m with hardwood pulp
2Blank sheet of paper, observation microfibre degree of scatter;
Get 0.125g PVAC polyvinylalcohol (molecular weight is 1750), 0.025g starch and 0.10g concentration are that 20% polyvinyl acetate (PVAc) emulsion is in the beaker of 500ml, add 100g distilled water, heating for dissolving in micro-wave oven, after the taking-up, adding 42g concentration is 6% hardwood pulp, adding distil water 280g, add the fluorescence fine PP fiber of 0.0260g fiber number 0.6d, place many expenditures of HL2021 food masher, stirred 30 seconds, even cloth slurry in the 160 purpose standard screens of impouring φ 200mm, transfer on the filter paper, press 5 metafiltration paper and pressing plates, in baking oven, dried 10 hours for 90 ℃.After the taking-up, throw off filter paper, with the degree of scatter of magnifying glass observation microfibre, the fluorescence fine PP fiber that is added can be uniformly dispersed in paper the gained blank sheet of paper under uviol lamp.
Embodiment 2:
To make 120g/m
2, fabric width 1.8m corrugated paper be example, the paper pulp ratio that straw pulp and the U.S. reclaim paper system is 7: 3; In the slurry well paper pulp being diluted to concentration is 0.8%; In the dilution, add following composition, see Table (1).
Table 1
| ????no | Title | Addition (%) | Remarks |
| ??1： ??2： ??3： ??4： | Fine PP fiber polyacrylamide (cationic) cornstarch modified rosin resin emulsion | ????0.5 ????0.2 ????0.5 ????0.2 | Fiber number is 1d, average length is crossed 10mm mean molecule quantity 5,000,000, is mixed with 2% the aqueous solution and adds 5% the well-done back of the aqueous solution and add emulsion adding with content to be 5% |
| Above addition is the percentage composition with respect to the paper dry weight | |||
Paper pulp is carried through stock pump, cloth slurry, vacuum dehydration, steam drying in the table roll extrusion.Pump slurry speed is 1.5M
3/ min; The paper walking speed is 170m/min, and the temperature of oven dry steam is 180 ℃.
Not add polypropylene fibre, other addition compares with the corrugated paper of table 1, and the performance of made corrugated paper is for table (2).
The table 2 performance table of comparisons
Embodiment 3:
To make 160g/m
2, fabric width 2.4m corrugated paper be example, the ratio of the paper pulp of straw pulp and U.S.'s reclaimed waste paper system is 7.5: 2.5; In the slurry well paper pulp being diluted to concentration is 0.8%; In the dilution, add following composition, see Table (3) table 3
| ??no | Title | Addition (%) | Remarks |
| ????1 | The fine PP fiber | ????0.5 | Fiber number 1.5d, average length 10mm, fiber contains CaCO 3Stuffing |
| ????2 | Fine PP nitrile fiber | ????0.5 | Fiber number 1.5, average length 8mm, fiber contains CaCO 3Stuffing |
| ????3 | Polyacrylamide (cationic) | ????0.1 | Mean molecule quantity 8,000,000 is mixed with 1.5% the aqueous solution and adds |
| ????4 | Phosphoric acid hydrolysis starch | ????1％ | Being mixed with 5% the aqueous solution adds |
| ????5 | Poly-vinegar phenol ethene-vinyl chloride emulsion | ????0.5％ | With solid content is that 5% emulsion adds |
| ????6 | CaCO 3Superfine powder | ????5％ | The powder average grain diameter is 5um |
Stirring and evenly mixing in the slurry well is carried cloth slurry, vacuum dehydration, steam drying in roll extrusion through stock pump.Pump slurry speed is 3M
3/ min, paper walking speed 180m/min, the oven dry vapor (steam) temperature is 180 ℃.
Not add polypropylene fibre and polyester fiber, other addition compares with the corrugated paper of table 3, and performance comparison is in table 4.
The table 4 performance table of comparisons
Claims (10)
1. the microfibre made from fine reinforcing fibre, polymeric surfactant, starch, thermoplastic resin fat liquor and inorganic fillings, paper pulp strengthens paper; It is characterized in that each component with respect to the percentage by weight of paper dry weight is:
Component w.t/%
(1) average length is the fine reinforcing fibre 0.2～10 of 3～20mm
(2) polymeric surfactant 0.02～1
(3) starch 0.1～3
(4) the thermoplastic resin fat liquor 0.2～2
(5) inorganic fillings 0～30
(6) paper pulp 65～98 is wherein:
Described fine reinforcing fibre is a kind of of polypropylene fibre, polyvinyl chloride fibre, polyacrylonitrile fibre, vinylon, nylon fiber at least;
Described polymeric surfactant is a kind of of polyacrylamide, polymethylacrylic acid and polyvinyl alcohol at least;
Described thermoplastic resin fat liquor is a kind of of polymethacrylates, polyacrylate, phenolic resins, polyvinyl acetate, acrylate copolymer, polyvinyl acetate vinyl chloride copolymer, polyvinyl acetate styrol copolymer, polyvinyl acetate ethylene copolymer, polyvinyl acetate emulsion, modified rosin resin emulsion at least;
Described inorganic fillings is CaCO at least
3, TiO
2A kind of;
Described paper pulp is paper pulp a kind of of wood pulp, straw pulp and reclaimed waste paper system at least.
2. ask 1 described microfibre to strengthen paper according to right, the Denier range that it is characterized in that described fine reinforcing fibre is 0.5～2d.
3. strengthening paper according to the described microfibre of claim 1～2, be characterised in that described fine reinforcing fibre, is high polymer alloy fiber a kind of of polypropylene, polyvinyl chloride, polyester, polyacrylonitrile, polyvinyl formal, nylon at least.
4. strengthening paper according to the described microfibre of claim 1～3, be characterised in that described fine reinforcing fibre, is the fine reinforcing fibre that adds fluorescent material.
5. strengthen paper according to the described microfibre of claim 1～4, it is characterized in that described fine reinforcing fibre is to comprise CaCO at least
3, TiO
2A kind of is the fiber of stuffing.
6. microfibre according to claim 1 strengthens paper, it is characterized in that described starch, is a kind of of potato starch, cornstarch, tapioca, wheaten starch, bean starch, rice starch at least.
7. strengthen lowly according to claim 1,6 described microfibres, it is characterized in that described starch is a kind of of esterification starch, acid hydrolyzed starches, oxidized starch, etherification starch, crosslinked starch at least.
8. strengthen lowly according to above-mentioned claim 1,6,7 described microfibres, it is characterized in that described starch is that the aqueous solution mode that is mixed with concentration 2～8% adds through well-done.
9. strengthen paper according to the described microfibre of above-mentioned claim 1, it is characterized in that described thermoplastic resin fat liquor is is that 3～15% emulsion mode adds with solid content.
10. strengthen paper according to the described microfibre of above-mentioned claim 1, it is characterized in that described inorganic fillings average grain diameter is not more than 30 μ m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156597 CN1594731A (en) | 2003-09-10 | 2003-09-10 | Fine fiber reinforced paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156597 CN1594731A (en) | 2003-09-10 | 2003-09-10 | Fine fiber reinforced paper |
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| Publication Number | Publication Date |
|---|---|
| CN1594731A true CN1594731A (en) | 2005-03-16 |
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ID=34660040
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|---|---|---|---|
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| CN100529253C (en) * | 2005-05-09 | 2009-08-19 | 牡丹江恒丰纸业股份有限公司 | Manufacturing process of medical moisture absorption paper point base paper |
| CN101649575B (en) * | 2009-09-10 | 2011-01-05 | 天津商业大学 | Ceramic fiber furnish composite paper and preparation method thereof |
| CN101484636B (en) * | 2006-07-05 | 2011-04-06 | 三菱制纸株式会社 | Sheetlike products and works |
| CN101250838B (en) * | 2007-06-15 | 2011-04-20 | 山东凯丽特种纸股份有限公司 | Method for producing hot-melting artistic anti-fake paper |
| CN101172206B (en) * | 2006-11-01 | 2011-06-22 | 王金夫 | Filter-oil paper |
| CN102154900A (en) * | 2011-01-19 | 2011-08-17 | 安徽虹光企业投资集团有限公司 | Preparation method of anti-static carbon fibre corrugated paper |
| CN102501292A (en) * | 2011-12-02 | 2012-06-20 | 何洪城 | All-natural raw material wood fiber composite dalle and manufacture method thereof |
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- 2003-09-10 CN CN 03156597 patent/CN1594731A/en active Pending
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| CN101172206B (en) * | 2006-11-01 | 2011-06-22 | 王金夫 | Filter-oil paper |
| CN101250838B (en) * | 2007-06-15 | 2011-04-20 | 山东凯丽特种纸股份有限公司 | Method for producing hot-melting artistic anti-fake paper |
| CN101649575B (en) * | 2009-09-10 | 2011-01-05 | 天津商业大学 | Ceramic fiber furnish composite paper and preparation method thereof |
| CN102834259B (en) * | 2010-03-24 | 2016-01-20 | 凸版印刷株式会社 | Duplexer and manufacture method thereof and container molding |
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| CN102501292B (en) * | 2011-12-02 | 2013-12-11 | 何洪城 | Manufacture method of all-natural raw material wood fiber composite dalle |
| CN103866615A (en) * | 2014-02-25 | 2014-06-18 | 苏州恒康新材料有限公司 | Paper waterproofing agent and preparation method thereof |
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| CN103980546A (en) * | 2014-05-12 | 2014-08-13 | 青岛大学 | Paper base composite material prepared from waste paper and preparation method thereof |
| CN104452426A (en) * | 2014-11-20 | 2015-03-25 | 浙江恒达纸业有限公司 | Preparation method of reinforced fiber for special paper |
| CN105314217A (en) * | 2015-11-30 | 2016-02-10 | 常江 | Production method of high-air permeability corrugated paper packing box |
| CN105314217B (en) * | 2015-11-30 | 2018-10-19 | 常江 | A kind of production method of highly-breathable corrugated-paper packaging box |
| CN109024090A (en) * | 2018-09-27 | 2018-12-18 | 杭州大唐印刷有限公司 | A kind of DIY can mark the production technology of label paper |
| CN115897290A (en) * | 2021-08-19 | 2023-04-04 | 中国制浆造纸研究院有限公司 | High-strength paper and production method thereof |
| CN115075041A (en) * | 2022-05-18 | 2022-09-20 | 华南理工大学 | High-air-permeability paper bag and preparation method and application thereof |
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