CN102912691B - Coated craft paper and production method thereof - Google Patents
Coated craft paper and production method thereof Download PDFInfo
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Abstract
The invention discloses coated craft paper and a production method thereof. The coated craft paper comprises a core paper layer; the upper side of the core paper layer is a surface paper layer, and the lower side is a bottom paper layer; a coating layer is arranged on the upper surface of the surface paper layer; the bottom paper layer and the core paper layer are prepared by the steps of: dosing the waste paper, preparing waste paper pulp to obtain non-deinked waste paper pulp, and manufacturing paper through a paper layer to obtain a wet bottom paper layer and a wet core paper layer; the surface paper layer is prepared by the steps of: manufacturing paper through a paper layer by taking the UKP pulp, the non-deinked waste paper pulp or the mixture of the UKP pulp and the non-deinked waste paper pulp as the pulp to obtain a wet surface paper layer; and the wet bottom paper layer, the wet core paper layer and the wet surface paper layer are subjected to the steps of compounding with the coated body paper, preliminary drying, sizing, later drying, paper surface calendering, paper surface coating and after-treatment to obtain the coated craft paper. The available waste paper types are increased, and the fiber source is wider; and meanwhile, the quality of the waste paper pulp is effectively stabilized so as to guarantee the quality stability of the coated body paper and the white-surface craft paper and avoid easy layering, splitting and scaling.
Description
Technical field
The present invention relates to a kind of craft paper, specifically, relate to a kind of coated craft paper and production method thereof, belong to craft paper manufacturing technology field.
Background technology
Along with the development of national economy, the circulation of the extensive stocks such as electronics, electromechanics, instrument and meter, daily use chemicals, textile clothing is increasing, the craft paper market demand as these product package materials increases considerably, and it is also proposed higher requirement to its product quality.
The single layer structure that traditional craft paper normally adopts single net forming to manufacture paper with pulp, in order to increase its thickness and deflection to provide better packaging character, developing into double-deck or many nets gradually and to manufacture paper with pulp the two-layer or sandwich construction be composited again.At present; product majority on market is that employing three forming webs three-ply paper be then composited of manufacturing paper with pulp respectively opens structure; owing to adding the thickness of craft paper; so intensity and deflection are improved; but because the strength ratio of paperboard Coating combination is lower in recombination process, cause craft paper in use often to there will be the problem ruptured because of paperboard interlaminar separation.
For promoting craft paper product specification, outstanding outward appearance and surface property, adopt bleached wood pulp or bleached wood pulp to coordinate with DIP Deinking Pulp during the multi-vendor greatly craft paper at production sandwich construction at present and carry out vermicelli, produce white vermicelli craft paper.The method gained craft paper is more attractive in appearance than traditional craft paper, but the application of bleached pulp improves the production cost of craft paper, indirectly adds the costs of commodity circulation of packed article; Simultaneously, because in bleached pulp production process, fiber yield is low, not only need to consume a large amount of chemicalss, and discharge the medium wastewater contained hazardous substance in a large number, therefore use bleached pulp to carry out vermicelli to be unfavorable for saving primary timber resources, also be unfavorable for environmental protection, the chemical substances such as simultaneously residual in bleached pulp brightening agent also have harmful effect to packed articles such as textiles, daily use chemicals product.
Craft paper is as the overpack of some topper, in order to obtain good printed patterns, occurred in recent years carrying out the technique of pigment application in true qualities or white vermicelli craft paper surface, by improving paper smoothness, porosity reaches the object improving paper surface ink absorption.As shown in Figure 1, this technique generally adopts the sizing material based on starch to form glue application layer 8 on facial tissue layer 2 surface, be coated with on glue application layer 8 surface again, obtain priming coat 4, floating coat 5 and finishing coat 6, coating process adopts scraper for coating mode mostly, and described applying glue, coating process exist following problem:
1) top sizing problem.No matter postorder adopts scraper for coating, airblade coating or curtain coating, in craft paper top sizing process, generally adopt based on the method for the chemicals such as starch or starch matching surface sizing agent at present, object forms starch cover layer at paper, to give paper better smoothness, for the paper of coating covering below provides better application conditions, improve ink absorption; Secondly form starch film at paper, improve the defect of hair and powder dropping during postorder coating, slow down the migration of coating glue stick.
In this process, starch concentration is higher, film forming is better, but along with the rising of starch concentration, in quick gluing, process dry rapidly, although provide good filming, poor to the infiltration penetrability of paper inside, the paper Coating combination of sandwich construction is not helped, substantially so starch concentration is generally 8-15%; Although starch film can give paper better smoothness in addition, be convenient to applying of postorder coating process hide with pigment, but starch solids film itself is more crisp, blocked up starch glue application layer is easy to fracture, comes off, the dope layer of glue application layer surface attachment is easily caused to rupture thereupon, come off, easy scumming during printing, produces scaling phenomenon time serious, affects postorder surface printing and printing effect.
2) coating process problem.Craft paper, as package paper, pays attention to paper strength and fibre length more, and fiber is only through simple making beating, defibrination process.The particularly natural color pulp ox card body paper of manufacturing paper with pulp, due to a large amount of natural color pulps of non-micronization processes, the application of secondary stock, and the composite construction of multilayer, cause it uncoated art paper is compared on body paper surface, art post paperboard is more uneven.If follow-up employing scraper for coating, in scraper for coating process, coating in hopper transfers to paper surface by the roll surface rotated, and scraper directly acts on paper surface, and is reached the object controlling paper surface coating layer thickness and unit paper surface coating content by control scraper angle and pressure.
In this process, because scraper directly acts on paper surface, following problem will be brought: one is that the paper web of adhesive coating material is in high-speed cruising process, the high-speed cutting power that scraper produces relatively makes coating more easily be filled into the recess of paper surface, convex place then leaves very thin coating, even destroy paper fibre structure, even if like this through twice, coating process three times or more, the coating that the convex place of paper surface is residual is also few, consequently the covering of craft paper surface coating is poor, coating thickness is uneven, and the became uneven of coating causes to paper absorption of inks uneven, cause easily growing dim during printing, printed patterns is of different shades, light and shade differs, in addition, the dope layer that paper surface became uneven is even, craft paper is caused in use easily coating local shedding to occur, the i.e. phenomenon of foaming and scaling, and the serious became uneven of coating of repeatedly scraper for coating generation, web strength is caused to change greatly, then likely cause paper break, impact uses.Two is in coating process, and the paper web that band coating runs is in abundant moisture state, and scraper directly acts on paper surface and easily produces disconnected paper, thus affects coating machine production efficiency.
3) pigment covering problem.Because craft paper is surperficial and coarse, uneven, the covering uniformity of coating pigment to paper fiber is the problem being difficult to solve completely all the time, how to strengthen pigment as much as possible and hides, promote the problem that dope layer uniformity is constantly research in the industry all the time.Be no matter adopt once, secondary, three coatings, even more times coating, the pigment adopted in its formulation for coating material is mainly powdered whiting, one or both in kaolin of grinding, sometimes slave part plastic pigments, or add titanium dioxide to strengthen pigment covering, improve paper whiteness and opacity.Although heavy grinding calcium carbonate price is low, but it is poor to the covering of paper, Painting effect is poor, although kaolin can improve covering further, but its cost is higher, and though plastic pigments, titanium dioxide can reach good covering, opacity and whiteness, its price is too expensive, has a significant impact the craft paper market competitiveness.Therefore, find the alternative pigment that cost is low, paper hides, effectively improvement formulation for coating material is the important topic needing during coated craft paper is produced to solve.
In addition, along with the swift and violent growth of international and domestic paper production scale and total quantity consumed in recent years, the demand of paper industry to lumber fibre sharply increases, simultaneously due to the requirement of sustainable development, waste paper becomes the important source material of paper industry, particularly in package paper field, waste paper is adopted to be that raw material is advocated and popularity energetically, but, along with the sharply increase of waste paper dosage, its recovery total has not reached the market demand of paper industry to waste paper consumption gradually, in production, extensive use during waste paper needs to purchase from different country, different countries and regions waste paper grade scales and quality then differ greatly, cause pulp fiber quality fluctuation large, affect bodystock paper, the particularly coated paper quality stability of final production.
Summary of the invention
The technical problem to be solved in the present invention is for above deficiency, a kind of coated craft paper and production method thereof are provided, overcome the easy layering of craft paper in prior art, fracture, blistering, the defect that paper coat of colo(u)r covers and ink absorption is uneven, adopt the craft paper that described method manufactures, not easily layering, fracture, blistering, simultaneously paper coat of colo(u)r covers and ink absorption is even, environmental protection, and cost is low.
For solving the above problems, the present invention is by the following technical solutions: a kind of coated craft paper, comprise core paper layer, the upside of core paper layer is facial tissue layer, and downside is ground paper layer, and the upper surface of facial tissue layer is provided with coating layer, it is characterized in that: the ground paper layer of described coated craft paper and core paper layer be adopt waste paper through broke furnish, prepare waste paper pulp, obtain the secondary stock without deinking, then to manufacture paper with pulp step through ply of paper, obtain wet ground paper layer, green sand core ply of paper;
Facial tissue layer be adopt UKP slurry, without deinking secondary stock or adopt UKP slurry with without the mixture of the secondary stock of deinking as slurry, after ply of paper is manufactured paper with pulp, obtain wetted surface ply of paper;
Wet ground paper layer, green sand core ply of paper and wetted surface ply of paper make coated craft paper through bodystock paper compound, front oven dry, applying glue, post-drying, paper press polish, paper coating and post-processing step.
Based on above coated craft paper, the invention provides a kind of production method of described coated craft paper, described production method comprise broke furnish, prepare waste paper pulp, shaping of manufacturing paper with pulp, bodystock paper compound, front oven dry, applying glue, post-drying, paper press polish, paper coating and post-processing step;
Secondary stock batching step: U.S.A is given up: state gives up: give up in Europe: giving up day fully mixes in advance by the mass ratio of 50%:20%:15%:15%, then carries out slurrying;
The waste paper used in described broke furnish step, comprises the one wherein such as waste and old boxboard, waste newsprint, waste and old Cultural Paper or its mixture.
Prepare waste paper pulp step: after being mixed according to the above ratio by waste paper, carry out size degradation, coarse sizing, then carry out fiber classification by classifying screen, obtain long fine secondary stock, middle fine secondary stock and short fiber secondary stock three kinds of fibre stufves.
A kind of prioritization scheme, described in manufacture paper with pulp shaping, comprise ground paper layer of manufacturing paper with pulp, manufacture paper with pulp core paper layer and facial tissue layer step of manufacturing paper with pulp;
To manufacture paper with pulp ground paper layer step: with mass percent, get middle fine secondary stock 20-60%, short fiber secondary stock 40-80% is made into slurry, add filler, through approach system, wet end drainage and formation, obtained wet ground paper layer, quantitative 100-210g/m
2;
To manufacture paper with pulp core paper layer step: with mass percent, get the middle fine secondary stock 50-100% after classification, short fiber secondary stock 0-50% is made into slurry, add filler, through approach system, wet end drainage and formation, obtained green sand core ply of paper, quantitative 20-50g/m
2;
To manufacture paper with pulp facial tissue layer step: the mixture getting the fine secondary stock of length after the fine secondary stock of length after UKP slurry, classification or UKP slurry and classification, as slurry, adds filler, through approach system, wet end drainage and formation, obtained wetted surface ply of paper, quantitative 20-50g/m
2.
Another kind of prioritization scheme, described bodystock paper composite steps: wet ground paper layer, green sand core ply of paper and wetted surface ply of paper are formed separately in respective forming web portion, enter ply of paper recombination region, between facial tissue layer and core paper layer, between core paper layer and ground paper layer, spray ative starch respectively, then form compound ply of paper by squeezing;
Baking step before body paper: compound ply of paper is through press dewatering, and it is dry to enter front baking cadre, then enter surface-sizing station and carry out applying glue;
Applying glue step: starch is added water and is mixed with the turbid liquid of 2-6%, Heat Gelatinization forms gelatinized corn starch, with absolute dry mass, bleeding agent 1-10%, wet strength agent 1-10% and paper strengthening agent 1-10% are added respectively to starch absolute dry mass percentage, be configured to Cypres, the paper web of drying before going out carries out paper applying glue by surface size press;
Post-drying step: the ox card body paper completing paper applying glue enters the drying of post-drying portion dries.
Another prioritization scheme, described surperficial calendaring step:
The ox card body paper of post-drying enters rear calecder section, adopts hard roll-in light or soft calendaring, then enters painting process and is coated with.
Further prioritization scheme, described paper coating step is configured to coating with pigment and adhesive, is coated with on body paper surface, and carries out drying; Be made up of the base coat carried out successively, floating coat coating, finishing coat application step, each layer coating weight is respectively: priming coat 7-15g/m
2, floating coat 5-15g/m
2, finishing coat 5-15g/m
2;
Base coat, floating coat application step and finishing coat application step: the coating total amount in accurate measurement paper surface area, then coating evenly unrestrained paper is made by spraying rubbing method, coating is after paper is uniformly distributed, paper web carries out infra-red drying and contactless heated-air drying, enters the heating of drying cylinder portion and solidify drying completely after the solidification of dope layer preliminarily dried; Or
Base coat, floating coat application step: the coating total amount in accurate measurement paper surface area, then coating evenly unrestrained paper is made by spraying rubbing method, coating is after paper is uniformly distributed, paper web carries out infra-red drying and contactless heated-air drying, enters the heating of drying cylinder portion and solidify drying completely after the solidification of dope layer preliminarily dried; Finishing coat application step adopts scraper for coating method, and coating is after paper is uniformly distributed, and paper web carries out infra-red drying and contactless heated-air drying, enters the heating of drying cylinder portion and solidify drying completely after the solidification of dope layer preliminarily dried.
Further prioritization scheme, described post processing comprises paper ornamenting and batches step:
Paper finishing step: after paper coating completes, paper enters paper ornamenting operation, utilizes soft calendaring or hard roll-in light to carry out press polish;
Batch step: after paper ornamenting completes, enter last reeling end, form paper roll and cut, obtain coated craft paper finished product.
Further prioritization scheme, described fiber classification is to the secondary stock after scalping, the good slurry of one-level and one-level slag slurry is selected with one-level classifying screen, one-level slag slurry concentrates through slagging-off again, obtain short fiber secondary stock, the good slurry of one-level selects the good slurry of secondary and secondary slag slurry through secondary classifying screen again, secondary slag slurry concentrates through slagging-off again, fine secondary stock in acquisition, the good slurry of secondary concentrates through slagging-off again, obtains long fine secondary stock, and its technical indicator is long fine secondary stock freedom 500-700CSF, tensile index 28-35 Nm/g, weight in wet base 9-12g; Middle fine secondary stock freedom 400-520CSF, tensile index 26-31 Nm/g, weight in wet base 6-7.5g; Short fiber waste paper freedom 300-420CSF, tensile index 23-26Nm/g, weight in wet base 2-5g.
A kind of prioritization scheme of pigment in paper coating step, in described base coat step, pigment consists of: by each component absolute dry mass percentages, with 60-80% grinding calcium carbonate with 20-40% winnofil or coordinate as pigment using 50-70% grinding calcium carbonate, 20-30% kaolin, 10-20% winnofil, wherein in grinding calcium carbonate, winnofil particle diameter be less than 2 microns account for more than 90%, in kaolin particle diameter be less than 2 microns account for more than 86%;
In floating coat application step, pigment consists of: by each component absolute dry mass percentages, with 60-80% grinding calcium carbonate with 20-40% winnofil or coordinate as pigment using 50-70% grinding calcium carbonate, 30-50% kaolin, 0-20% winnofil, wherein in grinding calcium carbonate, winnofil particle diameter be less than 2 microns account for more than 95%, in kaolin particle diameter be less than 2 microns account for more than 95%;
In finishing coat application step, pigment consists of: by each component absolute dry mass percentages, with 70-100% grinding calcium carbonate and 0-30% winnofil or with 50-70% grinding calcium carbonate, 30-50% kaolin, 0-20% winnofil coordinate as pigment, wherein in grinding calcium carbonate, winnofil particle diameter be less than 2 microns account for more than 95%, in kaolin particle diameter be less than 2 microns account for more than 95%;
Described kaolin is ultrafine kaolin, one in kaolin of delaminating, calcined kaolin, preferred calcined kaolin.
A kind of prioritization scheme of adhesive in paper coating step, described priming coat and floating coat adhesive composition: represent by the percentage of each component oven-dry weight to pigment oven-dry weight, wherein latex 12%, thickener 1.0%, caustic soda 0.06%.
Finishing coat adhesive forms: represent by the percentage of each component oven-dry weight to pigment oven-dry weight, wherein latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.6-1.2%, wet strength agent 0.4-1.0%, dispersant 0.01-0.1%.
The prioritization scheme of adhesive in paper coating step, described latex is synthetic latex or is mixed by synthetic latex and biological latex, and synthetic latex comprises the mixing of one or more in acetic acid latex, styrene-butadiene latex or styrene-acrylic latex or other synthetic latex; Biological latex is nano-starch derivative, has another name called biological latex-TM conjugate or biopolymer conjugate;
Described thickener comprises the one in modified starch, casein, fatty acid ester, CMC;
Described lubricant is the one in calcium stearate emulsion, oil chloroflo or oxidized polyethlene wax;
Described wet strength agent is calcium, zinc, aluminium, the heavy metallic salt of zirconium and amino resins, aldehyde or aldehyde derivatives one wherein;
Described dispersant is the one in polyphosphate, sodium metasilicate, fatty alcohol, Sodium Polyacrylate, carboxymethyl cellulose, legumin, sodium lignosulfonate, converted starch, gum Arabic or casein.
The prioritization scheme of latex, described latex is for be made up of synthetic latex 50-100%, biological latex 0-50% by mass percentage.
The prioritization scheme of sizing agent in applying glue step, described starch is any one in oxidized starch, anionic starch, cationic starch, non-ionic starch;
Described bleeding agent is any one in aliphatic alcohol polyoxyvinethene phosphate, alkyl phosphate, sulfosuccinates salt;
Described wet strength agent comprise in Lauxite, melamine resin, polyamide polyureas, polyamine epichlorohydrin resin any one;
Described paper strengthening agent comprises the one in polyacrylate dispersion, carboxymethyl cellulose, polyvinyl alcohol, styrene-maleic anhydride polymer, styrene-acrylate polymer.
The present invention takes above technical scheme, compared with prior art, has the following advantages: adopt mixed waste pulp slurrying, widened selectable waste paper kind, fiber source is wider; Various waste paper mixes slurrying again, effectively stablizes secondary stock quality, thus has ensured the stability of ox card bodystock paper and craft paper quality.
Fibre stuff all adopts the secondary stock without deinking bleaching, or facial tissue layer adopts or a small amount of group unbleached chemical pulp of adapted, effectively avoid the link that bleaching process chemicals uses, also there is not bleaching effluent discharge, saved the energy resource consumption that bleaching needs, effects of energy saving and emission reduction is given prominence to simultaneously, pulping process environmental protection, and fiber yield is high, cost advantage is obvious, effectively strengthens the coated craft paper market competitiveness.
Surface sizing techniques breaks traditions technology, carry out technological innovation breakthrough, strengthen surface glue and shift infiltration between ply of paper, strengthening paper interfacial bonding strength, not easily there is the problems such as layering, tomography, scaling, and the application of additive in surface glue such as wet strength agent replaces it in the interpolation of wet end, enhance the resistance to water of the bond strength of paperboard interlayer and paperboard, WATER RESISTANCE and surface strength of paper, reduce hair and powder dropping, and be convenient to postorder painting work, turn avoid chemicals to attach at wet end system and easily cause loss, improve the service efficiency of chemicals.
Formulation for coating material technological innovation, the winnofil that a large amount of employing is cheap and easy to get, this chemical industry discarded object is turned waste into wealth, and environmental-protection function is strong, secondly, winnofil is more easy to control than the uniform particle sizes degree of grinding calcium carbonate, shape, and winnofil has better light scattering coefficient than grinding calcium carbonate, ink absorption is good, and therefore the application of winnofil increases substantially the opacity of paper, improve coating covering effect, coated face has better printability.
By to the accurate measurement of coating front end, then carry out direct paper even application, rely on paper high speed to run active force and coating fluid effect levelling on paper naturally, obtain uniform, the continuous print dope layer more excellent than scraper for coating.
Coating glue stick replaces part synthetic latex with biological latex, significantly reduces coated craft paper production cost, strengthens product competitiveness in the market, and meanwhile, its substituting synthetic latex, has effectively saved petrochemicals, saved resource.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Accompanying drawing 1 is the cross section structure schematic diagram adopting scraper for coating craft paper coating layer in prior art;
Accompanying drawing 2 is layer structure schematic diagrames of coated craft paper in the embodiment of the present invention;
Accompanying drawing 3 is cross section structure schematic diagrames that in the embodiment of the present invention, twice injection is coated with coating layer after a scraper for coating;
Accompanying drawing 4 is cross section structure schematic diagrames that coated craft paper of the present invention sprays the rear coating layer of coating for three times;
In figure,
1-core paper layer; 2-facial tissue layer; 3-ground paper layer; 4-priming coat; 5-floating coat; 6-finishing coat; 7-surface glue particle; 8-glue application layer.
Detailed description of the invention
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention; Except as otherwise noted, the percentage adopted in the present invention is mass percent.
Embodiment 1, as shown in Figure 2, a kind of coated craft paper, comprises core paper layer 1, and the upside of core paper layer is facial tissue layer 2, and downside is ground paper layer 3, and the upper surface of facial tissue layer 2 is provided with three layers of coating layer, is followed successively by priming coat 4, floating coat 5, finishing coat 6 from bottom to top.
The production method of above-mentioned coated craft paper, comprising: broke furnish, prepares waste paper pulp, shaping of manufacturing paper with pulp, bodystock paper compound, front oven dry, applying glue, post-drying, paper press polish, paper coating, post processing; Wherein,
1, broke furnish: for solving the problem that in large-scale production, waste paper sources is many, quality is random, Mei Fei ︰ Guo Fei ︰ Ou Fei ︰ day is given up and fully to mix in advance by the mass ratio of 50% ︰ 20% ︰ 15% ︰ 15%, carry out slurrying again, the Homogeneous phase mixing of multiple waste paper had both widened raw material sources, ensure the steady quality of secondary stock, also ensure the stability of craft paper original paper quality.Described all kinds of waste paper fibre proportioning, in conjunction with the market supply and demand and quality good or not, is typical proportion, also can all adopt wherein any one in production, or two or more any ratio compositions.
2, prepare waste paper pulp: after being mixed according to the above ratio by waste paper, carry out size degradation, coarse sizing, then carry out fiber classification by classifying screen, obtain long fine secondary stock, middle fine secondary stock and short fiber secondary stock three kinds of fibre stufves.
Wherein, described fiber classification is: to the secondary stock after scalping, selects the good slurry of one-level and one-level slag slurry with one-level classifying screen, one-level slag slurry concentrates through slagging-off again, obtain short fiber secondary stock, the good slurry of one-level selects the good slurry of secondary and secondary slag slurry through secondary classifying screen again, and secondary slag slurry concentrates through slagging-off again, fine secondary stock in acquisition, the good slurry of secondary concentrates through slagging-off again, obtains long fine secondary stock, and its technical indicator is long fine secondary stock freedom 500-700CSF, tensile index 28-35 Nm/g, weight in wet base 9-12g; Middle fine secondary stock freedom 400-520CSF, tensile index 26-31 Nm/g, weight in wet base 6-7.5g; Short fiber waste paper freedom 300-420CSF, tensile index 23-26Nm/g, weight in wet base 2-5g.
3, to manufacture paper with pulp shaping, comprise ground paper layer of manufacturing paper with pulp, manufacture paper with pulp core paper layer and facial tissue layer of manufacturing paper with pulp
3.1 manufacture paper with pulp ground paper layer: with mass percent, get middle fine secondary stock 20%, short fiber secondary stock 80% is made into slurry, add retention agent, sizing agent, dyestuff, starch as filler, through approach system, wet end drainage and formation, and obtained wet ground paper layer, quantitative 130g/m
2;
3.2 manufacture paper with pulp core paper layer: with mass percent, get the middle fine secondary stock 50% after classification, short fiber secondary stock 50% is made into slurry, add retention agent, sizing agent, dyestuff, starch as filler, through approach system, wet end drainage and formation, obtained green sand core ply of paper, quantitative 30g/m
2;
3.3 manufacture paper with pulp facial tissue layer: get the long fine secondary stock of 100% after classification as slurry, add retention agent, sizing agent, dyestuff, starch as filler, through approach system, wet end drainage and formation, and obtained wetted surface ply of paper, quantitative 30g/m
2;
4, bodystock paper compound, front oven dry, applying glue, post-drying
4.1 bodystock paper compounds: wet ground paper layer, green sand core ply of paper and wetted surface ply of paper are formed separately in respective forming web portion, enter ply of paper recombination region, between facial tissue layer and core paper layer, between core paper layer and ground paper layer, spray ative starch respectively, then form compound ply of paper by squeezing, i.e. bodystock paper;
Dry before 4.2 body paper: compound ply of paper, through press dewatering, enters front baking cadre drying, then enters surface-sizing station;
4.3 applying glues: starch is added water be mixed with 5% turbid liquid, Heat Gelatinization forms gelatinized corn starch, with absolute dry mass, bleeding agent 6%, wet strength agent 2% and paper strengthening agent 10% are added respectively to starch absolute dry mass percentage, be configured to Cypres, the paper web of drying before going out carries out paper applying glue by surface size press, and starch is oxidized starch, and bleeding agent is aliphatic alcohol polyoxyvinethene phosphate, wet strength agent is Lauxite, and paper strengthening agent is polyacrylate dispersion.
It is different that top sizing in the present invention and conventional surface application techniques have essence, and conventional surface applying glue is intended to paper and forms starch film as much as possible, improves paper planarization, strengthens paper intensity, reduces fibre shedding and fall hair.Because in technical solution of the present invention, surface glue concentration is lower, and under the effect of bleeding agent, surface size can not have been formed membranaceous at paper, but quick penetration paper enters paper web deep layer, as shown in Figure 2, surface glue particle 7 is filled in paper fibre framework gap in a large number, not only there is the advantage of conventional surface applying glue, by grasping gelatinized corn starch a lower concentration, be convenient to flowing, and be auxiliary with bleeding agent further, no longer be confined to gelatinized corn starch paper film forming, but do one's utmost to promote that gelatinized corn starch liquid is to the infiltration between paper inside and ply of paper, greatly strengthen the adhesion of body paper intensity and each interlayer, prevent ply of paper separation and delamination, in addition, by adding wet strength agent in gelatinized corn starch, the sizing material Particle Phase retained between paper fiber frame is to more, effectively avoid paper hair and powder dropping, both the wet powerful of craft paper had been given, preventing packing material from drenching breakage causes packed article impaired, it also avoid wet strength agent in traditional paper-making process and causes loss in the interpolation of paper machine approach system, drastically increase the utilization ratio of wet strength agent.
4.4 post-dryings: the ox card body paper completing paper applying glue enters the drying of post-drying portion dries;
5, surperficial press polish
The ox card body paper of post-drying enters rear calecder section, carry out paper press polish ornamenting, make paper more smooth, be convenient to painting work below, strengthen pigment to hide, paper press polish can adopt hard roll-in light, also can adopt soft calendaring, completes the ox card body paper after paper ornamenting and enters painting process and be coated with;
6, paper coating
This operation is configured to coating with pigment and adhesive, is coated with on body paper surface, and carries out drying, comprises base coat, floating coat coating, finishing coat coating.
6.1 base coat:
Pigment form: by each component absolute dry mass percentages, coordinate as pigment using 70% grinding calcium carbonate with 30% winnofil, wherein in grinding calcium carbonate, winnofil particle diameter be less than 2 microns account for more than 90%.
Adhesive forms: represent by the percentage of each component oven-dry weight to pigment oven-dry weight, wherein latex 12%, thickener 1.0% and caustic soda 0.06%; Latex is 100% carboxylic styrene butadiene latex, and thickener is CMC.
Base coat step: by the coating total amount 10g/m in front end accurate measurement paper surface area
2(in long-pending in unit paper surface over dry coating quality), then coating evenly unrestrained paper is made by spraying rubbing method, rely on the active force of paper web with paper machine high-speed cruising and the mobility of coating, coating is at paper surface nature levelling, obtain the dope layer of thickness uniformity, strengthen pigment to the covering of paper, spraying rubbing method can be curtain coating, airblade coating or other similar approach, coating is after paper is uniformly distributed, paper web enters infra-red drying and contactless heated-air drying, dope layer preliminarily dried is solidified, then enter the heating of drying cylinder portion and solidify drying completely, thereafter middle painting operation is entered.
6.2 floating coat coatings
Pigment form: by each component absolute dry mass percentages, coordinate as pigment using 70% grinding calcium carbonate with 30% winnofil, wherein in grinding calcium carbonate, winnofil particle diameter be less than 2 microns account for more than 95%.
Adhesive forms: represent by the percentage of each component oven-dry weight to pigment oven-dry weight, wherein latex 12%, thickener 1.0% and caustic soda 0.06%, latex is 100% carboxylic styrene butadiene latex, and thickener is CMC.
Floating coat coating process: coating content 8g/m
2, floating coat coating process is identical with base coat step.
6.3 finishing coat coatings
Pigment form: by each component absolute dry mass percentages, coordinate as pigment using 80% grinding calcium carbonate with 20% winnofil, wherein in grinding calcium carbonate, winnofil particle diameter be less than 2 microns account for more than 95%.
Adhesive forms: represent by the percentage of each component oven-dry weight to pigment oven-dry weight, wherein latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.6%, wet strength agent 1.0% and dispersant 0.01%; Latex is 100% carboxylic styrene butadiene latex, and thickener is CMC, and lubricant is calcium stearate emulsion, and wet strength agent is amino resins, and dispersant is carboxymethyl cellulose.
Finishing coat coating process: control coating weight 12g/m
2, finishing coat coating process can be identical with priming coat, floating coat coating process, namely measures in advance, then to the natural levelling method of paper spray paint, to strengthen the covering of pigment to paper further, as shown in Figure 4; Also can adopting scraper for coating method, to reach the more level and smooth object of paper, as shown in Figure 3, in production, specifically taking which kind of method to need according to highlighting paper pigment covering, or paper flatness and determining.
7, post processing, comprises paper ornamenting and batches
7.1 paper ornamentings: after three times painting process completes, paper enters paper ornamenting operation, and utilize soft calendaring or hard roll-in light to carry out press polish, make paper more level and smooth further, thickness is more even, strengthens paper printability;
7.2 batch: enter last reeling end after paper ornamenting completes, and form paper roll and cut, and obtain coated craft paper finished product.
Embodiment 2, except following different from embodiment 1 except, other technique is all identical with embodiment 1: manufacture paper with pulp in ground paper layer step, middle fine secondary stock 60%, short fiber secondary stock 40%; Manufacture paper with pulp in core paper layer step, middle fine secondary stock 100%; Manufacture paper with pulp in facial tissue layer step, adopt UKP, i.e. non-bleached wood pulp 100%; In applying glue step, starch concentration 3%, bleeding agent, wet strength agent, paper strengthening agent are respectively 2%, 8%, 2% to amount of starch; The coating of base coat, floating coat is made up of 80% carboxylic styrene butadiene latex and 20% biological latex with latex in finishing coat application step; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.7%, wet strength agent 0.9% and dispersant 0.02%.
Embodiment 3, except following to distinguish with embodiment 1 except, other technique is all identical with embodiment 1: manufacture paper with pulp in ground paper layer step, middle fine secondary stock 40%, short fiber secondary stock 60%; Manufacture paper with pulp in core paper layer step, middle fine secondary stock 70%, short fiber secondary stock 30%; Manufacture paper with pulp in facial tissue layer step, long fine secondary stock 30%, UKP starches 70%; In applying glue step, starch concentration 4%, bleeding agent, wet strength agent, paper strengthening agent are respectively 5%, 5%, 5% to amount of starch; The coating of base coat, floating coat is made up of 60% carboxylic styrene butadiene latex and 40% biological latex with latex in finishing coat application step; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.8%, wet strength agent 0.8% and dispersant 0.03%.
Embodiment 4, except following different from embodiment 1 except, other technique is all identical with embodiment 1: manufacture paper with pulp in ground paper layer step, middle fine secondary stock 50%, short fiber secondary stock 50%; Manufacture paper with pulp in core paper layer step, middle fine secondary stock 60%, short fiber secondary stock 40%; Manufacture paper with pulp in facial tissue layer step, long fine secondary stock 50%, UKP starches 50%; In applying glue step, starch concentration 5%, bleeding agent, wet strength agent, paper strengthening agent are respectively 4%, 10%, 7% to amount of starch; The coating of base coat, floating coat is made up of 50% carboxylic styrene butadiene latex and 50% biological latex with latex in finishing coat application step; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.9%, wet strength agent 0.7% and dispersant 0.04%.
Embodiment 5, except following different from embodiment 1 except, other technique is all identical with embodiment 1: manufacture paper with pulp in ground paper layer step, middle fine secondary stock 30%, short fiber secondary stock 70%; Manufacture paper with pulp in core paper layer step, middle fine secondary stock 80%, short fiber secondary stock 20%; Manufacture paper with pulp in facial tissue layer step, long fine secondary stock 30%, UKP starches 70%; In applying glue step, starch concentration 2%, bleeding agent, wet strength agent, paper strengthening agent are respectively 10%, 6%, 4% to amount of starch; The coating of base coat, floating coat is made up of 50% carboxylic styrene butadiene latex and 50% biological latex with latex in finishing coat application step, and in base coat step, pigment forms: grinding calcium carbonate 80%, winnofil 20%; In floating coat application step, pigment forms: grinding calcium carbonate 80%, winnofil 20%; In finishing coat application step, pigment forms: grinding calcium carbonate 100%; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 1.0%, wet strength agent 0.6% and dispersant 0.05%.
Embodiment 6, except following to distinguish with embodiment 1 except, other technique is all identical with embodiment 1: in base coat step, and pigment forms: grinding calcium carbonate 60%, winnofil 40%; In floating coat application step, pigment forms: grinding calcium carbonate 60%, winnofil 40%; In finishing coat application step, pigment forms: grinding calcium carbonate 70%, winnofil 30%; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 1.1%, wet strength agent 0.5% and dispersant 0.06%.
Embodiment 7, except following to distinguish with embodiment 1 except, other technique is all identical with embodiment 1: in base coat step, and pigment forms: grinding calcium carbonate 80%, winnofil 20%; In floating coat application step, pigment forms: grinding calcium carbonate 80%, winnofil 20%; In finishing coat application step, pigment forms: grinding calcium carbonate 100%; During primary coat, middle painting, face are coated with, latex is made up of 50% carboxylic styrene butadiene latex and 50% biological latex; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 1.2%, wet strength agent 0.4% and dispersant 0.07%.
Embodiment 8, except following to distinguish with embodiment 1 except, other technique is all identical with embodiment 1: applying glue
In step, starch concentration 4%, bleeding agent, wet strength agent, paper strengthening agent are 5%, 5%, 5% to starch quality percentage respectively; In base coat step, pigment forms: grinding calcium carbonate 60%, winnofil 40%; In floating coat application step, pigment forms: grinding calcium carbonate 60%, winnofil 40%; In finishing coat application step, pigment forms: grinding calcium carbonate 70%, winnofil 30%; During primary coat, middle painting, face are coated with, latex is made up of 60% carboxylic styrene butadiene latex and 40% biological latex; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.6%, wet strength agent 0.5% and dispersant 0.08%.
Embodiment 9, except following to distinguish with embodiment 1 except, other technique is all identical with embodiment 1: in base coat step, and pigment forms: grinding calcium carbonate 70%, kaolin 20%, winnofil 10%; In floating coat application step, pigment forms: grinding calcium carbonate 50%, kaolin 30%, winnofil 20%; In finishing coat application step, pigment forms: grinding calcium carbonate 50%, kaolin 30%, winnofil 20%, and kaolin selects calcined kaolin; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.7%, wet strength agent 0.6% and dispersant 0.09%, in base coat step kaolin particle diameter be less than 2 microns account for more than 86%, in kaolin particle diameter be less than 2 microns account for more than 95%.
Embodiment 10, except following to distinguish with embodiment 5 except, other technique is all identical with embodiment 5: in base coat step, and pigment forms: grinding calcium carbonate 65%, kaolin 20%, winnofil 15%; In floating coat application step, pigment forms: grinding calcium carbonate 50%, kaolin 50%; In finishing coat application step, pigment forms: grinding calcium carbonate 50%, kaolin 50%, the preferred calcined kaolin of kaolin; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.8%, wet strength agent 0.7% and dispersant 0.1%, in base coat step kaolin particle diameter be less than 2 microns account for more than 86%, in kaolin particle diameter be less than 2 microns account for more than 95%.
Embodiment 11, except following to distinguish with embodiment 6 except, other technique is all identical with embodiment 6: in base coat step, and pigment forms: grinding calcium carbonate 60%, kaolin 25%, winnofil 15%; In floating coat application step, pigment forms: grinding calcium carbonate 60%, kaolin 30%, winnofil 10%; In finishing coat application step, pigment forms: grinding calcium carbonate 60%, kaolin 30%, winnofil 10%, the preferred calcined kaolin of kaolin; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.9%, wet strength agent 0.8% and dispersant 0.11%, in base coat step kaolin particle diameter be less than 2 microns account for more than 86%, in kaolin particle diameter be less than 2 microns account for more than 95%.
Embodiment 12, except following to distinguish with embodiment 7 except, other technique is all identical with embodiment 7: applying glue
In step, starch concentration 4%, bleeding agent, wet strength agent, paper strengthening agent are 5%, 5%, 5% to starch quality percentage respectively; In base coat step, pigment forms: grinding calcium carbonate 55%, kaolin 20%, winnofil 15%; In floating coat application step, pigment forms: grinding calcium carbonate 65%, kaolin 30%, winnofil 5%; In finishing coat application step, pigment forms: grinding calcium carbonate 50%, kaolin 30%, winnofil 20%; During primary coat, middle painting, face are coated with, latex is made up of 80% carboxylic styrene butadiene latex and 20% biological latex, the preferred calcined kaolin of kaolin; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 1.0%, wet strength agent 0.9% and dispersant 0.12%, in base coat step kaolin particle diameter be less than 2 microns account for more than 86%, in kaolin particle diameter be less than 2 microns account for more than 95%.
Embodiment 13, except following to distinguish with embodiment 8 except, other technique is all identical with embodiment 8: in base coat step, and pigment forms: grinding calcium carbonate 50%, kaolin 30%, winnofil 20%; In floating coat application step, pigment forms: grinding calcium carbonate 60%, kaolin 30%, winnofil 10%; In finishing coat application step, pigment forms: grinding calcium carbonate 50%, kaolin 50%, and kaolin selects calcined kaolin; Adhesive composition in finishing coat application step: latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 1.2%, wet strength agent 1% and dispersant 0.01%, in base coat step kaolin particle diameter be less than 2 microns account for more than 86%, in kaolin particle diameter be less than 2 microns account for more than 95%.
In above embodiment,
The waste paper used in broke furnish step, comprises the one wherein such as waste and old boxboard, waste newsprint, waste and old Cultural Paper or its mixture.
Starch in applying glue step can also be any one in anionic starch, cationic starch, non-ionic starch.
Bleeding agent is surfactant, can also be any one in alkyl phosphate, sulfosuccinates salt or similar compound.
Wet strength agent can also be any one or similar compound in melamine resin, polyamide polyureas, polyamine epichlorohydrin resin.
Paper strengthening agent can also be the one in carboxymethyl cellulose, polyvinyl alcohol, styrene-maleic anhydride polymer, styrene-acrylate polymer.
Synthetic latex in paper coating step can also be one or more mixing in the synthetic latexes such as acetic acid latex, styrene-acrylic latex, and biological latex is nano-starch derivative, has another name called biological latex-TM conjugate or biopolymer conjugate.
Thickener can also be starch or other chemical synthesis class thickener.
Lubricant can also be the one in oil chloroflo, oxidized polyethlene wax.
Wet strength agent can also be the heavy metallic salts such as calcium, zinc, aluminium, zirconium, the one in aldehyde or aldehyde derivatives.
Dispersant can also be the one in polyphosphate, sodium metasilicate, fatty alcohol, Sodium Polyacrylate, legumin, sodium lignosulfonate, converted starch, gum Arabic, casein.
Kaolin can also be ultrafine kaolin, the one of delaminating in kaolin.
Carry out quality testing according to iso standard detection method to above embodiment gained coated craft paper, the detection data of embodiment 1 to embodiment 7 are as following table:
The detection data of embodiment 8 to embodiment 13 are as following table:
Detect data by upper table embodiment can find out with the contrast of GB/T 10335.5-2008, the coated craft paper that employing the inventive method obtains, burst index, horizontal ring crush index is high, inter-layer bonding force good, and product is easy fracture, layering not; Paper coat of colo(u)r covers, and ink absorption is even, and paper smoothness is good, print surface roughness is low, and picking speed is high, and product is blistering, dry linting not easily, and printability is good; Positive and negative water imbibition is low, and product water repelling property is excellent, and market competitiveness is strong.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a coated craft paper, it is characterized in that: described coated craft paper comprises core paper layer (1), the upside of core paper layer is facial tissue layer (2), downside is ground paper layer (3), the upper surface of facial tissue layer (2) is provided with three layers of coating layer, is followed successively by priming coat (4), floating coat (5), finishing coat (6) from bottom to top;
The production method of above-mentioned coated craft paper, comprising: broke furnish, prepares waste paper pulp, shaping of manufacturing paper with pulp, bodystock paper compound, front oven dry, applying glue, post-drying, paper press polish, paper coating, post processing; Wherein,
Broke furnish: be solve the problem that waste paper sources is many, quality is random in large-scale production, being given up Mei Fei ︰ Guo Fei ︰ Ou Fei ︰ day fully mixes in advance by the mass ratio of 50% ︰ 20% ︰ 15% ︰ 15%, then carries out slurrying;
Prepare waste paper pulp: after being mixed according to the above ratio by waste paper, carry out size degradation, coarse sizing, then carry out fiber classification by classifying screen, obtain long fine secondary stock, middle fine secondary stock and short fiber secondary stock three kinds of fibre stufves;
To manufacture paper with pulp shaping, comprise ground paper layer of manufacturing paper with pulp, manufacture paper with pulp core paper layer and facial tissue layer of manufacturing paper with pulp:
To manufacture paper with pulp ground paper layer: with mass percent, get middle fine secondary stock 60%, short fiber secondary stock 40% is made into slurry, add retention agent, sizing agent, dyestuff, starch as filler, through approach system, wet end drainage and formation, obtained wet ground paper layer, quantitative 130g/m
2;
To manufacture paper with pulp core paper layer: with mass percent, get the middle fine secondary stock after classification 100% and be made into slurry, add retention agent, sizing agent, dyestuff, starch as filler, through approach system, wet end drainage and formation, obtained green sand core ply of paper, quantitative 30g/m
2;
To manufacture paper with pulp facial tissue layer: get and adopt UKP, namely non-bleached wood pulp 100% is as slurry, adds retention agent, sizing agent, dyestuff, starch as filler, through approach system, wet end drainage and formation, obtained wetted surface ply of paper, quantitative 30g/m
2;
Bodystock paper compound, front oven dry, applying glue, post-drying:
Bodystock paper compound: wet ground paper layer, green sand core ply of paper and wetted surface ply of paper are formed separately in respective forming web portion, enter ply of paper recombination region, between facial tissue layer and core paper layer, between core paper layer and ground paper layer, spray ative starch respectively, then form compound ply of paper by squeezing, i.e. bodystock paper;
Dry before body paper: compound ply of paper, through press dewatering, enters front baking cadre drying, then enters surface-sizing station;
Applying glue: starch is added water be mixed with 3% turbid liquid, Heat Gelatinization forms gelatinized corn starch, with absolute dry mass, bleeding agent 2%, wet strength agent 8% and paper strengthening agent 2% are added respectively to starch absolute dry mass percentage, be configured to Cypres, the paper web of drying before going out carries out paper applying glue by surface size press, and starch is oxidized starch, and bleeding agent is aliphatic alcohol polyoxyvinethene phosphate, wet strength agent is Lauxite, and paper strengthening agent is polyacrylate dispersion;
Post-drying: the ox card body paper completing paper applying glue enters the drying of post-drying portion dries;
Surface press polish:
The ox card body paper of post-drying enters rear calecder section, carry out paper press polish ornamenting, make paper more smooth, be convenient to painting work below, strengthen pigment to hide, paper press polish can adopt hard roll-in light, also can adopt soft calendaring, completes the ox card body paper after paper ornamenting and enters painting process and be coated with;
Paper coating:
This operation is configured to coating with pigment and adhesive, is coated with on body paper surface, and carries out drying, comprises base coat, floating coat coating, finishing coat coating;
Base coat:
Pigment form: by each component absolute dry mass percentages, coordinate as pigment using 70% grinding calcium carbonate with 30% winnofil, wherein in grinding calcium carbonate, winnofil particle diameter be less than 2 microns account for more than 90%;
Adhesive forms: represent by the percentage of each component oven-dry weight to pigment oven-dry weight, wherein latex 12%, thickener 1.0% and caustic soda 0.06%; Latex is made up of 80% carboxylic styrene butadiene latex and 20% biological latex, and thickener is CMC;
Base coat step: by the coating total amount 10g/m in front end accurate measurement paper surface area
2then coating evenly unrestrained paper is made by spraying rubbing method, rely on the active force of paper web with paper machine high-speed cruising and the mobility of coating, coating is at paper surface nature levelling, obtain the dope layer of thickness uniformity, strengthen pigment to the covering of paper, spraying rubbing method can be curtain coating, airblade coating or other similar approach, coating is after paper is uniformly distributed, paper web enters infra-red drying and contactless heated-air drying, dope layer preliminarily dried is solidified, then enters the heating of drying cylinder portion and solidify drying completely, enter thereafter middle painting operation;
Floating coat is coated with:
Pigment form: by each component absolute dry mass percentages, coordinate as pigment using 70% grinding calcium carbonate with 30% winnofil, wherein in grinding calcium carbonate, winnofil particle diameter be less than 2 microns account for more than 95%;
Adhesive forms: represent by the percentage of each component oven-dry weight to pigment oven-dry weight, wherein latex 12%, thickener 1.0% and caustic soda 0.06%, latex is made up of 80% carboxylic styrene butadiene latex and 20% biological latex, and thickener is CMC;
Floating coat coating process: coating content 8g/m
2, floating coat coating process is identical with base coat step;
Finishing coat is coated with:
Pigment form: by each component absolute dry mass percentages, coordinate as pigment using 80% grinding calcium carbonate with 20% winnofil, wherein in grinding calcium carbonate, winnofil particle diameter be less than 2 microns account for more than 95%;
Adhesive forms: represent by the percentage of each component oven-dry weight to pigment oven-dry weight, wherein latex 12%, thickener 1.0%, caustic soda 0.06%, lubricant 0.7%, wet strength agent 0.9% and dispersant 0.02%; Latex is made up of 80% carboxylic styrene butadiene latex and 20% biological latex, and thickener is CMC, and lubricant is calcium stearate emulsion, and wet strength agent is amino resins, and dispersant is carboxymethyl cellulose;
Finishing coat coating process: control coating weight 12g/m
2, finishing coat coating process can be identical with priming coat, floating coat coating process, namely measures in advance, then to the natural levelling method of paper spray paint, to strengthen the covering of pigment to paper further;
Post processing, comprises paper ornamenting and batches:
Paper ornamenting: after three times painting process completes, paper enters paper ornamenting operation, and utilize soft calendaring or hard roll-in light to carry out press polish, make paper more level and smooth further, thickness is more even, strengthens paper printability;
Batch: after paper ornamenting completes, enter last reeling end, form paper roll and cut, obtain coated craft paper finished product;
Quantitative 220g/m
2; Bulk 1.45cm
2/ g; Horizontal folding strength 95 times; Burst index 3.8kPam
2/ g; Horizontal ring crush index 17Nm/g; Inter-layer bonding force 205J/m
2; Glossiness 72%; Smoothness 155s; Positive surface roughness 1.35 μm; Picking speed IGT 3.6m/s; K & N value 22%; COBB value 20g/m
2; COBB value 53g/m
2.
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002363887A (en) * | 2001-06-04 | 2002-12-18 | Oji Paper Co Ltd | Coated white board applicable to sharable use in offset/ gravure printing |
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| CN102212983B (en) * | 2011-04-13 | 2013-01-23 | 吉安集团股份有限公司 | High-intensity environment-friendly craft paper and manufacturing method thereof |
| CN102199898B (en) * | 2011-04-13 | 2012-10-03 | 浙江吉安纸容器有限公司 | Coated natural kraft and manufacturing method thereof |
-
2012
- 2012-10-18 CN CN201210395962.2A patent/CN102912691B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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