CN1244227A - Lumen loading of mineral filler into cellulose fibers for papermaking - Google Patents
Lumen loading of mineral filler into cellulose fibers for papermaking Download PDFInfo
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- CN1244227A CN1244227A CN98801975A CN98801975A CN1244227A CN 1244227 A CN1244227 A CN 1244227A CN 98801975 A CN98801975 A CN 98801975A CN 98801975 A CN98801975 A CN 98801975A CN 1244227 A CN1244227 A CN 1244227A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
Abstract
A method of introducing and retaining particles of mineral filler inside the lumens of wood pulp fibers is disclosed. The fillers are mixed with a high-consistency pulp slurry so that a portion of the total filler diffuses inside the lumens. The loaded fiber is treated with a chemical flocculating agent that exhibits a higher chemical affinity for the filler than for the fiber. The flocculated filler particles are prevented from diffusing outside the lumens. At equal filler loading levels, paper formed according to the lumen loading process of this invention exhibits superior mechanical strength than paper prepared in a conventional manner.
Description
Invention field
The present invention relates to mineral matter and add and fill out paper and its preparation method, wherein fillers dispersed adds chemical floc so that the filler in the bonding lumen in the lumen of paper pulp fiber and in this batching.The method of the application of the invention, filler is retained in the lumen, even under the Papermaking Conditions of dilution, high shear.
Background of invention
In papermaking, can use any fiber-like material for example timber, straw, bamboo, fiber crops, bagasse, sisal hemp, flax, cotton, jute and ramie.The separation of these material fibers is called as slurrying.The fiber that is used for papermaking that separates is known as paper pulp.Because the fact that timber enriches and is easy to obtain, paper mainly comprises wood pulp fiber and insoluble mineral in granular form filler.Most of fillers are compared quite cheap with fiber, therefore add filler to reduce whole papermaking cost in paper-making process.In paper pulp fiber, add filler and can give the certain mechanical performance of paper for example bulk and deflection equally, and optical property for example brightness and opacity.In papermaking, use kaolin, chalk, talcum, titanium dioxide, calcium carbonate (comprising winnofil (PPC) and powdered whiting (GCC)) as mineral filler usually.
Over past ten years, winnofil (PCC) is widely used as preferred paper and adds and fill out mineral.The PCC that for example, can prepare various varying particle sizes and crystal shape or form.PCC shows high brightness usually, causes high paper brightness.When improving the paper opacity, some PCC forms are effective especially, are desirable and improve the paper opacity when the paper printed on both sides.Other PCC form is being effective aspect the control paper sheet thickness (it relates to paper sheet stiffness).PCC equally also influences the air permeability of paper, and air permeability influences the ability of certain atmosphere-comtrolling apparatus of physical treatment paper during the papermaking.In papermaking, use PCC also to have other advantage.
Usually fill out mineral filer content raising in the paper along with adding, the material cost in the papermaking descends with being directly proportional.Therefore, the maximization of mineral filer content is the main target of paper manufacturers in the paper.Also can improve by the content that improves filler and to add the optical property for example brightness and the opacity of filling out paper.Yet the reduction of the mechanical strength that these advantages are caused along with the raising of mineral level of filler in the paper is offset.Strength of paper comes from the bonding between the adjacent paper pulp fiber.The filler that is dispersed in the whole paper pulp fiber makes destruction the tight contact that bonds between the adjacent paper pulp fiber.The content of filler is high more in the paper, and the bonding between fiber and the fiber is easy more destroyed, thereby causes lower paper strength.
Provide several method to be used to solve the problem that increases the paper strength reduction that causes owing to stuffing.Some relate to the reagent that uses usually as retention agent and come the chemically modified fillers surface in these means.The polyelectron synthetic polymer that these normally play a major role in flocculation mechanism.The most frequently used is polyamide and polyacrylamide.
Well-known additional adhesive also can be used as to be improved filler and adds the means of filling out paper strength.These binding agents can be natural or synthetic polymers, and they add to improve the mechanical strength of loft-dried paper at the wet end of paper machine.These materials generally are the starch that for example obtains corn, tapioca, potato and the wheat from each kind of plant, the glue that obtains in cluster needling locust bean or the pawpaw seed.Before use, " boiling " or opposite these glue of prehydration or starch are to promote swelling.Glue and starch usually also use degree of sizing (ability of promptly anti-water infiltration) to improve paper as face coat in papermaking.
It is to be called the technology that lumen is filled that other improvement adds the means of filling out paper strength.It comprises filler directly is placed in the cavity (being lumen) of paper pulp fiber.The filler that is retained in the paper pulp fiber lumen can not disturb interfibrous bonding, and therefore produces less pair influence to adding the mechanical strength of filling out paper.Lumen is filled can provide simple mechanical mixture to realize.Yet when filler will be moved in these lumens, they can diffuse out.Use known technology, in paper-making process, still be a problem the diffusion couple paper manufacturers of the filler in the filling of lumen and tytosis chamber.Have been found that the method for unexpected product and lumen paper fillers pulp fibres in a kind of new prior art, wherein can in lumen, fill the filler of suitable high-load, make the reduction of paper strength reduce to minimum simultaneously.
Therefore, the purpose of this invention is to provide a kind of method that improves mineral content in the paper.Thereby another purpose of the present invention is to reduce the method that the necessary paper pulp amount of paper identical in quality reduces the papermaking cost that obtains by improving the mineral filler level.The objective of the invention is to improve filer content in the paper, considerably less with the filler of sewage (being also referred to as " plain boiled water ") loss during forming paper on the paper machine like this.Last purpose of the present invention is to produce a kind ofly to fill out paper in flawless adding aspect machinery and/or the optical property.
U.S. the patent No. 5,223,990 disclose a kind of in the presence of cellulosic fibre material by calcium hydroxide and carbon dioxide reaction calcium carbonate filled method in cellulose fibre.
U.S. the patent No. 5,096, and 539 disclose preparation adds the method for filling out paper, and wherein filler comprises a kind of insoluble precipitate that is deposited on the spot in the fiber finer cell wall.
U.S. the patent No. 4,510, and 020 discloses a kind of preparation adds the method for filling out paper, and wherein all basically fillers are all in the lumen of cellulose fibre.
Pertinent literature separately or the equal new product of the present invention and improve the method for filer content in the paper openly of combination.
Summary of the invention
The invention provides a kind of method that in paper-making process, in wood pulp fibre, adds mineral filler, wherein adopt chemical addition agent to make the filler particles flocculation in the fiber finer cell.Filler remains in the fiber finer cell under dilution, high shear Papermaking Conditions.The present invention further provides a kind of high filler loading and can accept optical property of having, keep for example product of mechanical strength of physical property simultaneously.
The invention provides and a kind ofly add the method for filling out paper by producing with mineral filler paper fillers pulp fibres lumen.In papermaking process, generally be that about 1.0 to 5.0 weight % places add filler at pulp density.By then add the downstream adding chemical floc of point at filler, filler is fixed and is retained in the lumen during papermaking.Randomly, in paper-making process, can add additional filler, so that realize controlling subtly the filer content in the final paper at second feed point.The method of the application of the invention adds filler in the lumen of paper pulp fiber, and protects them to avoid the draining power that causes that usually filler moves during papermaking.The method according to this invention is by being about 1.0 to mix to about 5.0 weight % places or agitating pulp fiber, filler and flocculant are filled in filler in the paper pulp fiber lumen at pulp density in paper-making process.Can dilute filler/paper pulp fiber mixture when needing before being transported to paper machine, to obtain to be generally about 0.3 to about 1.0%, preferred about 0.5% ingredients concentration.
The main aspect of the inventive method is the structure of paper fibre.Strength of paper depends primarily on paper pulp fiber, when they are used for papermaking, bonds fully mutually during papermaking.The most widely used conduct is those fibers that obtain from timber, and when discharging by slurrying, great majority are long hollow tubular at microscopically, and most of size is even on the length, but tapered in each end.Along the length of fiber, make the aperture perforating fiber wall of center cavity and fiber exterior.The method that mineral filler is placed in the lumen is called as the lumen filling, and is applicable to various paper grade (stock) fibers.
Method of the present invention can be carried out on the fiber that is obtained by many kinds of timber (by any conventional pulp-making method and bleaching).This fiber can be these two a mixture of hardwood fiber, cork fibrous or hardwood and cork fibrous.Yet in order to make tytosis chamber, the biggest ground of filler, the paper pulp fiber of Shi Yonging should exist with the form of " dry " in the methods of the invention.The dry pulp fiber destroys most lumen inevitably and can not accept mineral filler.The slurrying once more of dry pulp fiber not too is easy to obtain all advantages that lumen of the present invention is filled new method, but is fully understanding under the situation of this restriction, also can carry out slurrying again.
The concentration of paper pulp fiber slurry preferably about 1 is to about 5%, in the gross weight of slurry.In the preferred embodiment of the invention, in the gross weight of slurry, the concentration of paper pulp fiber slurry preferably about 2 to about 4%.
Kaolin, chalk, talcum, titanium dioxide, aluminium oxide, silica, winnofil (PCC) and powdered whiting (GCC) use as mineral filler in paper production usually.Filler is by the fine grained of insoluble solid, and normally the mineral fine grained is formed.Because the advantage of high-specific surface area and high sometimes reflectivity, filler are given for example opacity and the brightness of optical property of paper improvement.It is the main purpose that adds filler in paper furnish that mineral add the raising of filling out the paper optical property, though can also give paper other advantage, the durability of the impressionability of the smoothness of Gai Shaning, improvement and improvement for example.
Though can use kaolin, chalk, talcum, titanium dioxide, aluminium oxide, silica, PCC, GCC etc. in the method for the invention, preferred filler is winnofil (PCC).The average particle size particle size of PCC is about 0.5 to about 2.0 microns.In the preferred embodiment of the invention, the average-size of PCC is about 0.7 to about 1.4 microns.The form of PCC is oblique side, rhombus or scalenohedron.Other filler, for example fine heavy lime stone (UFGL) also can use in the methods of the invention.
According to embodiment of the present invention, be mixed in the wood pulp fiber by means of the water slurry of known mechanical means with mineral filler.For the tytosis chamber, paper pulp can be not drying regime, so that obtain maximum filling benefit.In paper pulp, add filler as aqueous slurry.With after paper pulp fiber mixes, in total solid, the filler solids content is that about 5 weight % are to about 80 weight % like this.In the preferred embodiment of the invention, be that about 20 weight % are to about 40 weight % in the content of total solid filler solid.
Filler and fibre fractionation are under agitation mixed a period of time, so that tytosis chamber, the biggest ground.Have been found that minimum 5 minutes mixing time is essential in order to obtain maximum the filling.Short incorporation time can not provide maximum lumen to fill benefit.In the preferred embodiment of the invention, mixing or the time of stirring can be about 10 minutes to about 30 minutes.The definite upper limit, still do not know the upper limit of mixing time except that being subjected to practicality and economic constraints.During fiber and filler component were mixed together, some fillers were dispersed in the fiber finer cell gradually.This produces by the machinery diffusion.
Some factor has a strong impact on the filer content that in fact is filled in the fiber finer cell.A kind of such factor is the average particle size particle size of mineral filler.Filler with smaller particle size is compared with the filler of larger particle size and is filled in the lumen being easier to.These two kinds of component relative concentrations that occur when in addition, fiber and filler mix also determine lumen to fill the degree of carrying out.At last, the incorporation time of filler and the fibre fractionation influence quantity that lumen is filled in paper furnish.
According to the present invention, the amount of filler that is diffused in the lumen generally is about 0.5% to 10% of fiber and a filler mixed weight.In the preferred embodiment of the invention, the filler of filling in the lumen is about 3 to about 6% of fiber and a filler gross weight.
The main aspect of another of lumen fill method of the present invention need add chemical floc in paper pulp fiber-filler mixture after paper pulp fiber-filler component fully mixes.The use of this flocculant makes any filler that is retained in the fiber finer cell all form the agglomerate of sufficient size, is being diffused into outside the lumen during the papermaking to prevent and treat this filler.This also makes the outer filler of lumen form agglomerate.The formation of agglomerate reduces filler particles and disturbs the tendency that bonds between fiber, and in fixing and be retained in filler inside and outside the lumen, therefore control filler during papermaking deposits.
Chemical floc is selected from the such material of polymer (being also referred to as starch) of the glucose that is obtained by plant.The material that obtains starch mainly is corn, tapioca, potato and wheat.Before starch used in product of the present invention as chemical floc, " boiling " starch (according to the mode of manufacturer's recommendation) was to improve dissolving and swelling.This is main aspect of the present invention, causes maximum lumen to be filled because form agglomerate inside and outside lumen.
Can use the starch of natural formation or also can use starch by various technology chemical modifications.Chemical modification can make starch become CATION, anion or both sexes.In the preparation of this product, the method according to this invention, starch is the both sexes waxy corn starch preferably.
Also can use other chemical agent to make the filler flocculation in tytosis chamber.This flocculant is selected from those materials that PCC is shown the chemical affinity stronger than wood pulp fibre.This chemical affinity uses intermittently calorimetry technical measurement.When the chemical agent introducing is contacted with mineral surfaces, as long as have enough affinity between these two kinds of materials, on the surface of mineral the chemical agent adsorption phenomena appears so.Absorption is the exothermic process of release heat.Introduce the chemical agent that contacts with wood pulp fibre adsorption phenomena also takes place.Interactional size provides maximum benefit to determine that between measurement flocculant and the mineral filler.Separated measuring is to determine flocculant and interactional size chemically and between the similar microcrystalline cellulose of wood pulp.
In the preferred embodiment of the invention, for the material of equal proportion, the interactional size of flocculant-mineral (representing with card) equals the interactional size of flocculant-cellulose at least.More preferably, the interactional size of flocculant-mineral interacts big at least 50% than flocculant and cellulose.The preferred especially interactional size of flocculant-cellulose is 0.Compare with other lumen filling technique, favourable part of the present invention is that it provides a kind of and prevents and treats the means that filler particles is diffused into fiber finer cell outside, and the drying-free step.This causes energy consumption to reduce and improve the profit margin of manufacturer.
In another embodiment of the present invention, filler and chemical floc are made slurry, and at first mix, preferably mixed about 10 to 30 minutes, then this mixture is joined in the aqueous slurry of wood pulp fibre.
How accompanying drawing 1 expression method of the present invention is used in general paper technology.Filler can separately add, and for example can add filler in blending chest in batching, adds filler then again in head box.Add between the point at these two, but after first adds point, in premixed fiberfill component, add chemical floc so that the filler that exists inside and outside with the fiber finer cell is fixed and kept.
The following examples are used to further specify new method of the present invention and new product.They should be considered to the nonrestrictive explanation of the present invention, and are used in no instance limit the scope of the invention, and only illustrate in claims.Embodiment
In the following embodiments, one or more methods that relate to adding mineral fibres in the slurry of high concentration wood pulp fibre have been described.After filler and mixed with fibers, add chemical floc, so be diffused into filler in the fiber finer cell by agglomeration, and prevented that they are diffused into the lumen outside.Flocculant is selected from those high chemicals of chemical affinity to the chemical affinity comparison cellulose fibre of filler.Use intermittently calorimetry evaluating chemical compatibility.In addition, mixed mineral filler and chemical floc join in the wood pulp fibre slip of high concentration then.The mechanical strength that the paper made from the mixture that is obtained shows under high filler fill level.
Embodiment 1
Adding 200 ml concns in 4 liters of glass reactors is the not dry bardwood pulp of 4 weight % (solid).By means of big flat blade, under 300rpm, mix this paper pulp, produce stirring action stably.Adding solids content in the bardwood pulp of mixing is the scalenohedron calcium carbonate of 20 weight %, and wherein the calcium carbonate dry weight is 40 weight % of solid total content in the mixture.Calcium carbonate/paper pulp hydrous slurry was stirred 30 minutes again.The both sexes waxy corn starch (CATO 225 of National Starch company) that to be added in 30 minutes solids contents of 200 following boilings in calcium carbonate/paper pulp hydrous slurry be 1 weight %.Content of starch is 4.0 weight % with the calcium carbonate dry restatement.This calcium carbonate/paper pulp/starch hydrous slurry was stirred 30 minutes.Use the Formax device on the stainless steel papermaking wire-cloth, this mixture to be made page.The Substance of this page be about 170 the gram/square metre.Under 25psi, between woollen blanket, push page, and dry on roller under 265 ℃.These dry pages are commodity hardwood dry pulp plates calciferous, and its ratio and commodity cork dry pulp plate with hope is compound.Measure the percentage of calcium carbonate in the hardwood dry pulp plate so that the content of the dry hardwood of determining clearly to exist.The following refining page that contains hardwood: 360 gram hardwood (deriving from the dry cover plate of hardwood) and 24 premium on currency are mixed, and in the Valley beater, stir this mixture to 360 Canadian Standard Freeness (CSF).By 360 untreated softwood pulp of gram and the mixing of 24 premium on currency are obtained a kind of mixture.Make with extra care this mixture by in the Valley beater, being mixed to 400CSF.With refining hardwood and refining softwood mix, obtain 60% hardwood/40% cork compound.In this mixture, add entry and regulate solids content 0.3 weight % (in dry pulp).
Use Formax sheet former (the Noble-Wood type of Adirondack Machine Corp.) by in distilled water, being to pull an oar for 7 times to 60% hardwood (in lumen, containing calcium carbonate) of 400CFS and 40% bleached softwood pulp preparation handmade paper (60 restrain/square metre) at pH.Pulp density is 0.3%.In intermittent pulp proportioning, add 0.05% (1 pound of/ton paper) retention agent (high molecular weight cation polyacrylamide) Percol
(AlliedColloids).In this intermittent pulp proportioning, add 0.25% (5 pounds of/ton paper) synthetic sizing agent (alkyl ketene dimer).Use the Formax device on the stainless steel papermaking wire-cloth, this mixture to be made page.Under 25psi, between woollen blanket, push page, and dry on roller under 265 ℃.Before test, handle in 50% relative humidity and 23 ℃ of following adjustment.
Determine paper strength by test breaking length (tappi test method T-494 OM-88) and Scott Bond (tappi test method UM403).Measure paper brightness according to tappi test method T452-OM-92, measure paper opacity (being converted into 60.5 gram/square metre Substances) according to tappi test method T452-OM-91.
The strength of paper of lumen used according to the invention filler calciferous is greater than contrast paper (fill in acellular chamber, but contain the equivalent filler that adds in a usual manner).
The edition with parallel text invention
(acellular filling) (cell filling) filler weight (%) 24 24 breaking lengths (rice) 2127 3128Scott Bond (Foot-Pound/1000) 34.2 53.6TAPPI brightness (%) 89.3 89TAPPI opacities (%) 87.6 87.6 embodiment 2
270 gram bardwood pulps and 90 gram softwood pulp mixtures (75% hardwood/25% cork) are mixed with 24 premium on currency, and in the Valley beater, be refined to 400CSF.Pulp density is 1.5%.Except that anhydrating, improve pulp density to 3.8% by 100 eye mesh screens screening paper pulp.The paper pulp pure water is placed on one side, used after a while.Paper pulp solid in the concentration of analog integrated factory of use 3.8%.Comprehensive paper mill is a kind of factory of making paper pulp by oneself rather than obtaining paper pulp from the market.
1000 milliliters of previously described concentration of adding are 3.8% paper pulp in 4 liters of glass reactors.By means of big flat blade, under 100rpm, mix this paper pulp, produce stirring action stably.Adding solids content in the hardwood/softwood paper pulp that mixes is the scalenohedron calcium carbonate slip of 20 weight %, and wherein the calcium carbonate dry weight is 40 weight % of solid total content in the mixture.Calcium carbonate/paper pulp hydrous slurry was stirred 10 minutes again.In calcium carbonate/paper pulp hydrous slurry, be added in 200 following boilings 30 minutes, solids content is the both sexes potato starch (STA-LOK of A.E.Staley Manufacturing company of 1 weight %
400).Content of starch is 4.0 weight % with the calcium carbonate dry restatement.Then this calcium carbonate/paper pulp/starch hydrous slurry was stirred 10 minutes.Dilute this mixture with 1622 milliliters of paper pulp pure water then, the result adds all pure water of removing in the screening process once more.Further diluting this mixture with 9500 ml waters is 0.3% to regulate ultimate density approximately.
Then by above-mentioned hardwood/softwood paper pulp calciferous with do not contain the hardwood/softwood pulp preparation handmade paper of the calcium carbonate that is filled in the lumen.As embodiment 1 preparation and test handmade paper.Adopt Hercules feathering test (HST) to measure the permeability of liquid in handmade paper.This test is carried out on KA or KC type Hercules degree of sizing tester, and the test method that is adopted is TAPPI test method T-530PM-89 (revising in 1989).
The paper strength that contains the paper that is filled in the calcium carbonate in the lumen of the present invention is breaking length and Scott Bond greater than contrast paper (filling of acellular chamber).Contain the paper that is filled in the calcium carbonate in the lumen and show the degree of sizing of improvement equally.
The edition with parallel text invention
(acellular filling) (cell filling) filler weight (%) 16 16 breaking lengths (rice) 2970 3350Scott Bond (Foot-Pound/1000) 49.2 58.2HST degree of sizings (%) 23 103TAPPI brightness (%) 88.1 88.2TAPPI opacities (%) 87.5 88
Claims (17)
1, a kind of mineral that prepare add the method for filling out paper, and it comprises that the hydrous slurry with mineral filler mixes with the hydrous slurry of wood pulp fibre, and add chemical floc in the papermaking batching, obtain to have in cellulose fibre lumen inside the paper of mass filler.
2, according to the process of claim 1 wherein described batching is diluted to about 0.3 basically to about 1.0 weight %.
3, according to the method for claim 1 or 2, wherein mineral filler is a calcium carbonate.
4, according to the method for claim 3, wherein calcium carbonate is winnofil.
5, require one of any method according to aforesaid right, wherein the concentration of wood pulp fibre is that about 1.0 weight % are to about 5.0 weight %, in the gross weight of slip.
6, according to the method for claim 5, wherein the concentration of wood pulp fibre is about 2.0 to about 4.0 weight %, in the gross weight of slip.
7, require one of any method according to aforesaid right, wherein said mineral filler is that average particle size particle size about 0.5 is to about 2.0 microns winnofil.
8, according to the method for claim 7, wherein the average particle size particle size of winnofil is about 0.7 to about 1.4 microns.
9, require one of any method according to aforesaid right, wherein said mineral filler is a calcium carbonate, and the content of described calcium carbonate is that about 5 weight % of batching total solid are to about 80 weight %.
10, require one of any method according to aforesaid right, wherein said mineral filler is a calcium carbonate, and the content of described calcium carbonate is that about 20 weight % of batching total solid are to about 40 weight %.
11, require one of any method according to aforesaid right, wherein the hydrous slurry of the hydrous slurry of mineral filler and fiber mixed about 10 to about 30 minutes.
12, require one of any method according to aforesaid right, wherein chemical floc is selected from corn, tapioca, potato and wheaten starch.
13, require one of any method according to aforesaid right, wherein flocculant is CATION, anion or amphoteric starch.
14, according to the method for claim 13, wherein starch is the both sexes waxy corn starches.
15,,, at first make the hydrous slurry and the chemical floc mixing of mineral filler with before the wood pulp fibre hydrous slurry mixes according to the process of claim 1 wherein in papermaking batching.
16, a kind of mineral add and fill out paper, are about 0.5 weight % to 10 weight % at the filler of lumen inside in the gross weight of fiber and filler wherein.
17, a kind of mineral add and fill out paper, are about 3.0 weight % to 6.0 weight % at the filler of lumen inside in the gross weight of fiber and filler wherein.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79721997A | 1997-02-11 | 1997-02-11 | |
| US08/797,219 | 1997-02-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1244227A true CN1244227A (en) | 2000-02-09 |
| CN1213200C CN1213200C (en) | 2005-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB988019752A Expired - Fee Related CN1213200C (en) | 1997-02-11 | 1998-02-10 | Lumen loading of mineral filler into cellulose fibers for papermaking |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0960236B1 (en) |
| JP (1) | JP2001511853A (en) |
| KR (1) | KR20000070779A (en) |
| CN (1) | CN1213200C (en) |
| AT (1) | ATE249549T1 (en) |
| AU (1) | AU6279498A (en) |
| BR (1) | BR9807212A (en) |
| CA (1) | CA2280043A1 (en) |
| DE (1) | DE69818012T2 (en) |
| NO (1) | NO993772D0 (en) |
| PL (1) | PL334939A1 (en) |
| PT (1) | PT960236E (en) |
| SK (1) | SK82499A3 (en) |
| WO (1) | WO1998035095A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290722A (en) * | 2012-02-28 | 2013-09-11 | 金东纸业（江苏）股份有限公司 | Pulp and preparation method thereof, and paper prepared from pulp |
| CN103653233A (en) * | 2013-12-06 | 2014-03-26 | 武汉淡雅香科技发展股份有限公司 | Method for improving ash content of paper-making process reconstituted tobaccos |
| CN104179069A (en) * | 2014-08-18 | 2014-12-03 | 武汉地质资源环境工业技术研究院有限公司 | Papermaking method capable of inhibiting decay of plant fibers |
| CN110700009A (en) * | 2019-10-10 | 2020-01-17 | 建滔（佛冈）绝缘材料有限公司 | Production process and application of hot-pressed paperboard for pressing copper-clad plate as cushion layer |
| CN115768947A (en) * | 2020-06-12 | 2023-03-07 | 特种矿物(密执安)有限公司 | Surface mineralized organic fibre and its preparing process |
| CN116145470A (en) * | 2023-02-21 | 2023-05-23 | 衢州东大复合材料科技有限公司 | Thermal sublimation transfer printing base paper with small elasticity |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6423183B1 (en) | 1997-12-24 | 2002-07-23 | Kimberly-Clark Worldwide, Inc. | Paper products and a method for applying a dye to cellulosic fibers |
| EP1068391A1 (en) | 1998-03-23 | 2001-01-17 | Pulp and Paper Research Institute of Canada | Method for producing pulp and paper with calcium carbonate filler |
| CA2282211C (en) * | 1998-10-16 | 2007-01-09 | Grain Processing Corporation | Process for preparing a paper web |
| US6749721B2 (en) | 2000-12-22 | 2004-06-15 | Kimberly-Clark Worldwide, Inc. | Process for incorporating poorly substantive paper modifying agents into a paper sheet via wet end addition |
| US7749356B2 (en) | 2001-03-07 | 2010-07-06 | Kimberly-Clark Worldwide, Inc. | Method for using water insoluble chemical additives with pulp and products made by said method |
| DE10113998A1 (en) * | 2001-03-22 | 2002-09-26 | Voith Paper Patent Gmbh | Method for loading fibers contained in a fiber suspension with an auxiliary |
| DE10120526A1 (en) * | 2001-04-26 | 2002-10-31 | Voith Paper Patent Gmbh | Process for the production of pulp |
| US20070025904A1 (en) * | 2003-10-01 | 2007-02-01 | Skuse David R | Preparation of a composition comprising an alkaline earth metal oxide and a substrate having a reduced amount of grit |
| US7670459B2 (en) | 2004-12-29 | 2010-03-02 | Kimberly-Clark Worldwide, Inc. | Soft and durable tissue products containing a softening agent |
| JP2007092203A (en) * | 2005-09-28 | 2007-04-12 | Nippon Paper Industries Co Ltd | Neutral newsprint paper for offset printing |
| DE102007059736A1 (en) | 2007-12-12 | 2009-06-18 | Omya Development Ag | Surface mineralized organic fibers |
| DK2326770T3 (en) * | 2008-09-09 | 2015-01-12 | Omya Int Ag | COMPOSITIONS OF CALCIUM CARBONATES / PIGMENTS FOR PAPER FORMULATIONS SHOWING AVERAGE REDUCTION |
| WO2014158104A2 (en) * | 2013-03-29 | 2014-10-02 | Siam Kraft Industry Co., Ltd. | Sheets with organic filler |
| WO2017214616A1 (en) | 2016-06-10 | 2017-12-14 | Ecolab Usa Inc. | Low molecular weight dry powder polymer for use as paper-making dry strength agent |
| US10487452B1 (en) * | 2017-01-26 | 2019-11-26 | Kimberly-Clark Worldwide, Inc. | Treated fibers and fibrous structures comprising the same |
| CN110998023B (en) | 2017-07-31 | 2022-05-24 | 埃科莱布美国股份有限公司 | Dry polymer coating process |
| MX2020001348A (en) | 2017-07-31 | 2020-08-31 | Ecolab Usa Inc | Process for fast dissolution of powder comprising low molecular weight acrylamide-based polymer. |
| WO2019118675A1 (en) | 2017-12-13 | 2019-06-20 | Ecolab Usa Inc. | Solution comprising an associative polymer and a cyclodextrin polymer |
| EP3802940A4 (en) | 2018-05-31 | 2021-07-14 | Argaman Technologies Ltd. | A method and system for the application of chemical compounds to natural fibers and treated fibers obtained therefrom |
| CN111472196A (en) * | 2020-04-10 | 2020-07-31 | 浙江科技学院 | Durable manual writing and painting paper filled with micro-nano calcium and preparation method thereof |
| CN114293399B (en) * | 2022-01-14 | 2022-10-21 | 九洲生物技术（苏州）有限公司 | Chemically modified papermaking filler and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510020A (en) * | 1980-06-12 | 1985-04-09 | Pulp And Paper Research Institute Of Canada | Lumen-loaded paper pulp, its production and use |
| US5096539A (en) * | 1989-07-24 | 1992-03-17 | The Board Of Regents Of The University Of Washington | Cell wall loading of never-dried pulp fibers |
-
1998
- 1998-02-10 SK SK824-99A patent/SK82499A3/en unknown
- 1998-02-10 PL PL98334939A patent/PL334939A1/en unknown
- 1998-02-10 BR BR9807212-9A patent/BR9807212A/en not_active IP Right Cessation
- 1998-02-10 AT AT98905092T patent/ATE249549T1/en not_active IP Right Cessation
- 1998-02-10 AU AU62794/98A patent/AU6279498A/en not_active Abandoned
- 1998-02-10 WO PCT/US1998/002925 patent/WO1998035095A1/en active IP Right Grant
- 1998-02-10 KR KR1019997007040A patent/KR20000070779A/en not_active Application Discontinuation
- 1998-02-10 DE DE69818012T patent/DE69818012T2/en not_active Revoked
- 1998-02-10 EP EP98905092A patent/EP0960236B1/en not_active Revoked
- 1998-02-10 CA CA002280043A patent/CA2280043A1/en not_active Abandoned
- 1998-02-10 CN CNB988019752A patent/CN1213200C/en not_active Expired - Fee Related
- 1998-02-10 PT PT98905092T patent/PT960236E/en unknown
- 1998-02-10 JP JP53508698A patent/JP2001511853A/en active Pending
-
1999
- 1999-08-04 NO NO993772A patent/NO993772D0/en unknown
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290722A (en) * | 2012-02-28 | 2013-09-11 | 金东纸业（江苏）股份有限公司 | Pulp and preparation method thereof, and paper prepared from pulp |
| CN103653233A (en) * | 2013-12-06 | 2014-03-26 | 武汉淡雅香科技发展股份有限公司 | Method for improving ash content of paper-making process reconstituted tobaccos |
| CN104179069A (en) * | 2014-08-18 | 2014-12-03 | 武汉地质资源环境工业技术研究院有限公司 | Papermaking method capable of inhibiting decay of plant fibers |
| CN104179069B (en) * | 2014-08-18 | 2016-09-14 | 武汉地质资源环境工业技术研究院有限公司 | The papermaking process that a kind of Plant fiber of suppression decays |
| CN110700009A (en) * | 2019-10-10 | 2020-01-17 | 建滔（佛冈）绝缘材料有限公司 | Production process and application of hot-pressed paperboard for pressing copper-clad plate as cushion layer |
| CN110700009B (en) * | 2019-10-10 | 2020-08-18 | 建滔（佛冈）绝缘材料有限公司 | Production process and application of hot-pressed paperboard for pressing copper-clad plate as cushion layer |
| CN115768947A (en) * | 2020-06-12 | 2023-03-07 | 特种矿物(密执安)有限公司 | Surface mineralized organic fibre and its preparing process |
| CN116145470A (en) * | 2023-02-21 | 2023-05-23 | 衢州东大复合材料科技有限公司 | Thermal sublimation transfer printing base paper with small elasticity |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9807212A (en) | 2002-05-21 |
| EP0960236B1 (en) | 2003-09-10 |
| NO993772L (en) | 1999-08-04 |
| EP0960236A1 (en) | 1999-12-01 |
| CA2280043A1 (en) | 1998-08-13 |
| NO993772D0 (en) | 1999-08-04 |
| SK82499A3 (en) | 2000-02-14 |
| PL334939A1 (en) | 2000-03-27 |
| DE69818012T2 (en) | 2004-04-01 |
| PT960236E (en) | 2004-02-27 |
| DE69818012D1 (en) | 2003-10-16 |
| AU6279498A (en) | 1998-08-26 |
| CN1213200C (en) | 2005-08-03 |
| WO1998035095A1 (en) | 1998-08-13 |
| KR20000070779A (en) | 2000-11-25 |
| JP2001511853A (en) | 2001-08-14 |
| ATE249549T1 (en) | 2003-09-15 |
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