CN102677535B - The method of dewatering efficiency, increase plate wet web strength, increase plate wet strength and raising filler confining force is improved in papermaking - Google Patents
The method of dewatering efficiency, increase plate wet web strength, increase plate wet strength and raising filler confining force is improved in papermaking Download PDFInfo
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Abstract
The invention provides a kind of method improved dewatering efficiency in papermaking process, increase plate wet web strength, increase plate wet strength and raising filler confining force.Described method is by by the efficiency preventing the Material coating at least some filler particles of filler material adhesive additive (drainage aids or wet web strength auxiliary agent or wet strength auxiliary agent) from improving drainage aids or wet web strength auxiliary agent or wet strength auxiliary agent.Cellulose fibre tightly keeps together by draining additive or wet web strength additive or wet strength auxiliary agent, and can not waste on filler particles.
Description
The intersection application of association area
The application is the part continuity of the application 12/323,976 that on November 26th, 2008 submits.About the research of federation's patronage or the statement of exploitation
Inapplicable.
Background technology
The present invention relates to the method improved dewatering efficiency in paper-making process, improve plate wet web strength (sheetwetwebstrength), improve plate wet strength (sheetwetstrength) and reinforcer confining force.Usually, in paper-making process, in wet end, add chemicals to assist the dehydration of slip, improve confining force and to improve wet web strength or dry web strength.The wet end of paper technology refers to that in paper technology, fiber is distributed to the stage in water with slip form.Then fiber-water slip, through drainage arrangement and dewatering process, forms wet web.Solid content after this wet web formation process is about 50%.Further dry wet paper web also forms the dry plate of paper washer (papermat).Paper washer comprises water and solid, and generally moisture 4 to 8%.The solid portion of paper washer comprises fiber (being generally cellulosic fibre), also can comprise filler.
Filler during paper technology, is added to paper washer with the mineral grain of the opacity and reflective that strengthen gained paper.At United States Patent (USP) the 7th, in 211, No. 608, describe some examples of filler.Filler comprises for increasing opacity or brightness, minimizing porosity or reducing the inorganic particle of cost of Paper or cardboard sheet and organic granular or pigment.Some examples of filler comprise following in one or more: kaolin, clay, talcum, titanium dioxide, hibbsite, barium sulfate, magnesium hydroxide, pigment such as calcium carbonate and analog.
Pearl filler adopts two kinds of form: GCC (calcium carbonate of grinding) and PCC (calcium carbonate of precipitation).GCC is naturally occurring calcium carbonate rock, and PCC is the calcium carbonate that synthesis is produced.Because PCC has larger specific area, so PCC has good light scattering property and provides good optical property to gained paper.But by the same token, the dry strength of the paper that the paper produced of paper washer that PCC fills is filled than GCC, wet strength and wet web strength are poor.
Filler is usually much smaller than fiber, so filler has the specific area more much bigger than fiber.The challenge that it is found that in filer content in raising cardboard is the efficiency that high filler reduces wet-end chemicals, the such as efficiency of chemical conditioner, wet web strength auxiliary agent and wet strength auxiliary agent.The present invention will provide novel filler pre-treatment, with the absorption making it reduce wet-end chemicals on filling surface, thus improves the efficiency of wet-end chemicals such as chemical conditioner, wet web strength auxiliary agent and wet strength auxiliary agent.
Paper wet web strength is very crucial for paper mill, because the wet web strength raised can increase the mobility of machine and reduce plate fracture and machine-spoiled time.Paper wet web strength is the quantity of the key formed between the crossed fiber of paper washer and the function of intensity.The filler particles with large surface area is easier to be combined with those fibers, and disturbs quantity and the intensity of those keys.Because the surface area of PCC filler is comparatively large, PCC filler disturbs those keys more than GCC.
Paper dewatering efficiency is also very crucial for paper mill, because the dewatering efficiency reduced in wet web can increase the demand to steam in drying process, reduces machine speed and production efficiency.Widely use chemical conditioner to improve dewatering efficiency, to reduce energy consumption, to improve machine speed and production efficiency.
Summary of the invention
At least one embodiment of the present invention relates to a kind of papermaking process, and it is by being combined filler pre-treatment and drainage aids or wet web strength auxiliary agent or wet strength auxiliary agent, has the plate wet strength of improvement or the draining of wet web strength or increase or filler confining force.Said method comprising the steps of: the blend that filler particles is provided, at least one draining additive or a kind of wet strength auxiliary agent or a kind of wet web strength auxiliary agent, and cellulose fibre storing; By the process of described filler particles composition of matter; Described filler particles is mixed with described cellulose fibre storing; Paper washer is formed with by removing some water from described mixture.The described filler particles of at least 10% is the calcium carbonate (PCC) of precipitation form, and the described filler particles of at least 10% is the calcium carbonate (GCC) of grinding form.Described cellulose fibre storing comprises a lot of cellulose fiber peacekeeping water.Described composition of matter suppresses drainage aids or wet strength additives or wet web strength additive and described filler particles to adhere to.In at least one embodiment, described cellulose fibre storing and filler particles are mixed to form batching (furnish), the described composition of matter process of described filler particles subsequently.
At least one embodiment of the present invention relates to a kind of method, and the blend of wherein said filler particles comprises the one be selected from by calcium carbonate, organic pigment, inorganic pigment, clay, talcum, titanium dioxide, hibbsite, barium sulfate, magnesium hydroxide and their groups of forming further.
At least one embodiment of the present invention relates to a kind of method, and wherein said composition of matter is AcAm/DADMAC copolymer.At least one embodiment of the present invention relates to a kind of method, and wherein said wet strength auxiliary agent or wet web strength additive or drainage aids are glyoxalated acrylamide/DADMAC copolymer.At least one embodiment of the present invention relates to a kind of method, and wherein said wet web strength additive or described wet strength auxiliary agent or drainage aids and described composition of matter carry identical charges.
At least one embodiment of the present invention relates to a kind of method, and wherein said calcium carbonate is be selected from a kind of form by the pulpous state calcium carbonate of dry calcium carbonate, dispersion, chalk and their groups of forming.Calcium carbonate can be the slurry calcium carbonate form of dispersion at least partially, and the slurry calcium carbonate of described dispersion comprises at least one be selected from acrylic acid polymer dispersant, polyphosphate sodium dispersant, kaolin slurry and their any combination further.The blend of described filler particles can be 50%GCC and 50%PCC.Described composition of matter can be coagulant, and optional free inorganic coagulant, organic coagulant, polycondensation coagulant and their any combination.Described coagulant can have 200 to 1,000, the molecular weight of 000.
At least one embodiment of the present invention relates to a kind of method, wherein said composition of matter is coagulant, it is selected from by alum, sodium aluminate, polyaluminium chloride (polyaluminumchloride), the aluminium base chloride of hydroxyl (aluminumchlorohydroxide), hydroxy Al chloride (aluminumhydroxidechloride), poly-polymeric aluminum chloride (polyaluminumhydroxychloride), Sulfated polyaluminium chloride, polysilicate sulfuric acid aluminium (polyaluminumsilicasulfate), ferric sulfate, iron chloride, epichlorohydrin-dimethylamine (EPI-DMA), the polymer that EPI-DMA ammonia is crosslinked, the polymer of dichloro ethylene and ammonia, the condensation polymer of multifunctional diethylentriamine, the condensation polymer of multifunctional tetren, the condensation polymer of multifunctional hexamethylenediamine, the condensation polymer of multifunctional dichloro ethylene, melamine polymers, formaldehyde resin polymer, in the group of positively charged vinyl-addition polymer and their any combination compositions.
At least one embodiment of the present invention relates to a kind of method, and wherein wet strength auxiliary agent or drainage aids or wet web strength auxiliary agent can be paper washer 0.3 to 5kg additive per ton relative to the ratio of described paper washer solid portion.At least part of described GCC particle can with described composition of matter process.At least one embodiment of the present invention relates to a kind of method, and wherein said PCC particle all need not described composition of matter process.Described filler particles can have the quality of as many as the gross mass of paper washer solid portion described in 50%.Described wet strength auxiliary agent or wet web strength additive or draining additive and described composition of matter can carry identical charges.
At least one embodiment of the present invention relates to a kind of composition of matter be used in papermaking process.Described composition of matter comprises: cellulose, filler particles, wet strength auxiliary agent or wet web strength additive or draining additive, and surrounds the coating of at least part of described filler particles.Build and arrange described coating, to prevent filler particles described in described wet strength auxiliary agent or wet web strength additive or draining additive adhesion.In at least one embodiment, at least part of described filler particles is calcium carbonate.In at least one embodiment, described filler particles is GCC, PCC or the combination of the two.In at least one embodiment, described filler particles comprises at least 10%PCC and 10%GCC.
Accompanying drawing explanation
The present invention is described in detail with reference to accompanying drawing below by way of concrete, wherein:
Fig. 1 is the figure of the improvement wet strength showing paper constructed in accordance.
Fig. 2 is the figure of the improvement wet web strength showing paper constructed in accordance.
Fig. 3 is that display is according to second figure improving content of ashes in plate of the present invention.
Fig. 4 is three figure of display according to improvement filler confining force of the present invention.
Fig. 5 is for display is according to the figure of vapour pressure reduction (draining increase) of the present invention.
Detailed description of the invention
At least one embodiment of the present invention manufactures the method comprising the paper of filler.At least one embodiment of the present invention is papermaking process, it comprises the following steps: the filler blends setting up PCC and GCC, wherein PCC accounts at least 10% of packing quality and GCC accounts at least 10% of packing quality, with coating preliminary treatment at least some filler particles, described coating reduces wet web strength additive or drainage aids or the bonding between wet strength auxiliary agent and filler particles, and filler blends and wet web strength additive or drainage aids or wet strength auxiliary agent is added in paper washer.
Knownly wet web strength additive or drainage aids or wet strength auxiliary agent added the wet web strength that can strengthen gained paper in paper washer or strengthen draining or improve machine speed and maneuverability or reinforcement plate wet strength.Some examples of wet strength auxiliary agent, wet web strength additive and drainage aids are described in United States Patent (USP) 7,125, and 469,7,615,135 and 7,641, in 776.
Unfortunately, a large amount of wet strength auxiliary agent or wet web strength additive or drainage aids is not added in practice to compensate the reduction that in paper washer, mass filler causes.A reason is because those additives are very expensive, and uses a large amount of additive can cause commercial infeasible production cost.In addition, add too much additive and have negative effect to papermaking process and the operability suppressing various forms paper making equipment.And cellulose fibre only can absorb a small amount of wet strength auxiliary agent or wet web strength additive or drainage aids.This causes restriction to using how many additives.Such a reason be because wet strength auxiliary agent or wet web strength additive or drainage aids be easy in and anion fiber/filler electric charge, and when these electric charges are neutralized, the further absorption of these additives is suppressed.
The efficiency that filler also reduces wet strength auxiliary agent or wet web strength additive or drainage aids is added in paper washer.Those additives are easy to coated filler particles.The filler particles existed is more, and the additive of coated filler particles is more, therefore tails off for the wet strength auxiliary agent that combined by cellulose fibre or wet web strength additive or drainage aids.Because this is the maximum of wet strength auxiliary agent or wet web strength additive or the drainage aids that can add, so more filler always means less active strength additive.Because the high surface area of PCC applies more additive than GCC, so this effect of PCC is more obvious than GCC.
In at least one embodiment of the present invention, with composition of matter preliminary treatment at least some filler particles, bond filler particles to prevent wet strength auxiliary agent or wet web strength additive or drainage aids at least partly.Preliminary treatment hope composition of matter applies some or all one or more filler particles completely.Or preliminary treatment hope composition of matter is only coated with one or more filler particles of a part, or wishes some filler particles of coating and be only coated with some a part of other particles with composition of matter.In at least one embodiment, preliminary treatment United States Patent (USP) the 5th, at least some composition of matter described in 221, No. 435 carries out, band cationic charge material wherein said specifically.In at least one embodiment, preliminary treatment United States Patent (USP) the 6th, 592, the dibasic ammonium halide-acrylamide copolymer of the diallyl-N described in 718, N-carries out.
Although pretreated filler particle is known in the art, the art methods of pretreated filler particle does not relate to the adhesion affecting wet strength auxiliary agent or wet web strength additive or drainage aids and filler particles.In fact, many prior art preliminary treatment are gained in strength the adhesion of additive and filler particles.Such as, United States Patent (USP) the 7th, 211, No. 608 describe the method using hydrophobic polymer pretreated filler particle.But this preliminary treatment is inoperative to the adhesion between strength additive and filler particles, and only repel the excessive water that absorbs to offset strength additive of water.On the contrary, the present invention reduces wet strength auxiliary agent or wet web strength additive or the interaction between drainage aids and filler particles, causes paper intensity, plate to dewater and the unforeseeable increase of machine maneuverability.
Fig. 1 shows the total solid part relative to producing given paper paper washer used, and the tensile strength of given paper is to the relation of filler percentage.Result clearly illustrates that to have extremely weak wet strength not adding wet strength auxiliary agent 63700 (interim wet strength auxiliary agent) lower plate.Velox (velox) can significantly increase plate wet strength.Simple filler pre-treatment does not increase plate wet strength.But filler pre-treatment increases Velox performance further, this causes higher plate wet strength.
Fig. 2 depicts the total solid part relative to producing given paper paper washer used, and the wet web tensile strength of given paper is to the graph of a relation of filler percentage.As shown in Figure 2, increasing filer content and reducing between paper wet web strength is linear relationship.When not adding nail (unit of length) section chemical conditioner (wet web strength auxiliary agent) 63700, cardboard has very poor wet web strength.Plate wet web strength can be significantly improved by using nail (unit of length) section chemical conditioner 63700.Independent filler pre-treatment has negative effect to paper wet web strength.But filler pre-treatment can strengthen the performance of nail (unit of length) section chemical conditioner 63700 further, and improved by the wet strength that can realize extra 20% compared with the filler pre-treatment of low ash content.For higher content of ashes, the performance of 63700 even strengthens and is greater than 20%.Alleviated this is because reduce filled preliminary treatment for the efficiency of strength additive of filler particles design.
At least some filler that the present invention is contained is known and commercially available.They comprise for increasing opacity or brightness, reduce any inorganic or organic granular or the pigment of porosity or reduction paper or scraps of paper plate cost.The most frequently used filler is calcium carbonate and clay.But talcum, titanium dioxide, hibbsite, barium sulfate and magnesium hydroxide are also applicable to filler.Calcium carbonate comprises the calcium carbonate (PCC) of precipitation of the grinding calcium carbonate (GCC) of drying or dispersed paste form, chalk, any form, and the calcium carbonate of the precipitation of dispersed paste form.The dispersed paste form of GCC or PCC uses many acrylate copolymers dispersant or polyphosphate sodium dispersant to produce usually.These dispersants various make the obvious negative electrical charge of calcium carbonate granule band.Kaolin slurry also uses acrylic acid polymer or polyphosphate sodium dispersion.
In at least one embodiment, the composition of matter of process is United States Patent (USP) 6,592, and any one or combination of composition of matter described in 718.Especially, any AcAm/DADMAC copolymer compositions wherein described in detail is suitable as treated substance composition.The example of AcAm/DADMAC copolymer compositions is the product #Nalco-4960 (hereinafter referred to as 4690) from Ondeo Nalco Co. of Illinois Naperville.
The composition of matter of process can be coagulant.The coagulant that the present invention is contained is known and commercially available.They can be inorganic or organic.Representational inorganic coagulant comprises alum, sodium aluminate, polyaluminium chloride or PAC (also referred to as the aluminium base chloride of hydroxyl, hydroxy Al chloride and poly-polymeric aluminum chloride), Sulfated polyaluminium chloride, polysilicate sulfuric acid aluminium, ferric sulfate, iron chloride etc. and their blend.
Some the organic coagulant being applicable to treated substance composition are formed by polycondensation.The polymer that example comprises epichlorohydrin-dimethylamine (EPI-DMA), EPI-DMA ammonia is cross-linked of the polymer of this type.
Other coagulant being applicable to treated substance composition comprise dichloro ethylene and ammonia polymer or at the polymer of the dichloro ethylene and dimethylamine that add or do not add ammonia, polyfunctional amine as the condensation polymer of diethylentriamine, tetren, hexamethylenediamine etc. and dichloro ethylene and the polymer be made up of such as melamine and formaldehyde resin condensation reaction.
Other coagulant being applicable to treated substance composition comprises the vinyl-addition polymer of band cationic charge, as (methyl) acrylamide, diallyl-N, the dibasic ammonium halide of N-, dimethyl amino ethyl methacrylate and its quaternary ammonium salt, dimethyl amino ethyl acrylate and its quaternary ammonium salt, methacryiamidopropyl trimethyl ammonium chloride, diallyl methyl (β-propionamido) ammonium chloride, (Beta-methyl acryloyl-oxyethyl) trimethylammoniumethyl sulfate, quaternised polyvinyl base lactam, vinyl amine, react the polymer generating Mannich or quaternary Mannich derivative, copolymer and trimer.Preferred quaternary ammonium salt can use methyl chloride, dimethyl suflfate or benzyl chloride to prepare.Trimer can comprise anionic monomer as acrylic acid or 2-acrylamido 2-methyl propane sulfonic acid, and condition is that on polymer, whole electric charge is cationic.The molecular weight ranges comprising these polymer of vinyl addition and condensation is paramount to millions of from being low to moderate hundreds of.Preferably, molecular weight ranges should from about 20,000 to about 1,000,000.In at least one embodiment, preliminary treatment by using as be used for pretreated filler particle applicable composition of matter described composition of matter in one, some or all arbitrarily combinations carry out.
In at least one embodiment, wet strength auxiliary agent or wet web strength additive or drainage aids carry identical electric charge with the composition of matter being applicable to process filler particles.When both carry identical charges, the possibility that wet strength auxiliary agent, wet web strength additive or drainage aids are adsorbed onto on its surface by filler additive is lower.Wet strength auxiliary agent, wet web strength additive or drainage aids that the present invention is contained comprise United States Patent (USP) 4,605,702 and U.S. Patent application 2005/0161181A1 described in any one in composition of matter, particularly wherein said various glyoxalated acrylamide/DADMAC copolymer compositions.The example of glyoxalated acrylamide/DADMAC copolymer compositions is product # nail (unit of length) section 63700 (Ondeo Nalco Co. of Illinois Naperville produces).Another example is the polymer containing amine, comprises allylamine/acrylamide copolymer and polyvinylamine; An example is polyamide-polyamine-chloropropylene oxide (PAE).
In at least one embodiment, filler used is PCC, GCC and/or kaolin.In at least one embodiment, filler used is containing PCC, GCC of acrylic acid polymer dispersant and/or kaolin or their blends.Wet strength additives or wet web strength auxiliary agent or draining additive can be paper washer 3kg additive per ton relative to the ratio of solid paper washer.
Better can understand foregoing with reference to following examples, the following example presents to illustrate, is not intended to limit the scope of the invention.
Embodiment 1
1 (i) filler pre-treatment
The blend of filler particles is obtained from paper mill.Blended filler is the mixture of 50%PCC and 50%100%GCC.With running water, this filler blends is diluted to 20% solid content.The filler blends that 200ml dilutes is put in the glass beaker of 500ml.At least 30 seconds were stirred before adding coagulant.Agitator is the top typed blender of EUROSTAR numeral, with the four blade stirring vanes (being all the IKAWorks company purchased from Wilmington, North Carolina State) of R1342,50mm.After mixing in initial 30 seconds, under 800rpm stirs, slowly add accelerator solution.The accelerator solution used is 4690.Coagulant dosage is based on filler stem weight 1kg/ton.Continue at 800 rpm to stir until add all coagulant.Then mixing speed is increased to 1500rpm, stirs 1 minute.
The use of 1 (ii) filler:
Pulverize the dry cover plate of commercially available bleached hardwood (hardwooddrylap) and prepare batching.The mixture of 50%PCC and 50%GCC is joined in the batching of pulp the different filer contents obtained in plate.With the nail (unit of length) section 61067 of 200ppm as retention agent.In order to carry out preliminary treatment evaluation, joined before in batching with nail (unit of length) section coagulant 4690 pretreated filler mixture at filler.In handmade paper preparation process, add the nail (unit of length) section 63700 of 3kg/ton to improve plate wet web strength.Result is shown in Figure 2.We attempt by measure plate wet web strength evaluate filler pre-treatment on 63700 the impact of compacting dewatering.Identical stress level is controlled at 60 DEG C, handmade paper is pressed onto a certain solid content (50%), the time of rupturing completely needed for wet plate in water under being recorded in the shearing force of 1000RPM, to compare plate wet web strength, think that wet web strength reflects compacting dehydration indirectly.Result shown in Figure 2 shows that adding 63700 can significantly improve plate wet web strength.Under comparatively low ash content, filler pre-treatment can increase plate wet web strength 20% further.For higher content of ashes, the performance of 63700 is even higher than 20%.
Embodiment 2
Run machine testing, wherein paper machine prepares GAB300 with the machine speed of 900 ms/min.There is provided composition, cellulose fibre is wherein 14%MXW; The waste paper of 3% coating; 17%SOW; 12% uncoated waste paper; 44%DIP and 10%ONP.Batching also comprises GCC.In process of the test, comprise 15/ton nail (unit of length) section compacting chemical conditioner (pressdewateringaid) 63700, retention agent, sizing agent and cationic starch all wet end additives keep constant.
1) enhancing of filler confining force:
Slowly 2kg/ton is increased to from 0.5kg/ton (based on filler) by 4690.Find along with 4690 to adding in loading pipe, online content of ashes slowly raises, as shown in Figure 3.Obviously, by filler pre-treatment, obtain the rising of 0.7 grey branch from 15.6% to 16.3%.In history, for the production of same rank, when not using nail (unit of length) section 63700, the DCS content of ashes of record is about 12%.Be to be noted that the increase of content of ashes is only facilitated by filler synusia (ply).So the increase of content of ashes should be about 1.4% in filler synusia, because filler synusia forms the half of end-product basis weight.Fig. 4 shows the FPAR of filler synusia.Wherein clearly illustrate that FPAR is elevated to 75% from 70%, this can be interpreted as any final content of ashes and obtain remarkable enhancing.
2) reduction of vapour pressure
Also find the vapour pressure being reduced predryer by filler process, as shown in Figure 5.From the morning 10:30 to 2:00 in afternoon, vapour pressure has slowly been reduced to 2 bar from 2.15 bar.Even if the pressing pressure of the pressing pressure of the first pressing part and the second pressing part is reduced to 470 and 580 from 550 and 600 respectively, vapour pressure still only gets back to 2.05.
In process of the test, in filler pre-treatment after about 1 hour, content of ashes is elevated to 16.3% from about 15.6%, then remains on phase same level several hours.On the other hand, vapour pressure keeps declining several hours, until reduce compacting load.This seems to show that steam reduces is not only because the rising of content of ashes.Further, in this test, the reduction of steam demand only derives from filler synusia, because 4690 have only used on this synusia, and should be less so raise by content of ashes the total steam minimizing caused separately.So the preliminary treatment of result fillers can strengthen 63700 as the performance of suppressing dehydrating agent (pressdewateringagent) or wet web strength auxiliary agent.
Those of ordinary skill in the art should be appreciated that all preceding methods can also be used for comprising other non-cellulose fiber materials paper washer, comprise cellulose family and non-cellulose fiber material, and/or the paper washer of fiber-like material of synthesis.
Can change the composition of method of the present invention described herein, operation and configuration, and not deviate from the principle and scope of the present invention defined in claims.Although the present invention can be implemented with the form that many kinds are different, describe particularly preferred embodiment of the present invention herein in detail.The disclosure is the example of principle of the present invention, instead of will limit the invention to detailed description of the invention described herein.Further, any of some or all that the present invention includes various embodiment described herein may combine.All patents mentioned Anywhere in this application or in any one patent quoted, the patent application of quoting or other data quoted, patent application and other citations are incorporated to accordingly by entirety together with quoting.In addition, the present invention also expects the embodiment getting rid of any a kind of, some or all of compositions, method, composition, parts or other parts of quoting material.
More than be disclosed as illustrative instead of exhaustive.To those skilled in the art, this description will imply many changes and alternative.All these alternatives and change are included in the scope of these claims, and wherein term " comprises " and referring to " including, but are not limited to ".Those those skilled in the art can recognize other equivalents of detailed description of the invention described herein, and these equivalents are also encompassed in these claims.
Here complete of the present invention preferably and the description of alternate embodiment.One skilled in the art will recognize that, other equivalents of detailed description of the invention described herein, these equivalents are covered by appended claims.
Claims (18)
1. comprise a papermaking process for filler, said method comprising the steps of:
There is provided the blend of filler particles, at least one draining additive, and cellulose fibre storing,
When there is not cellulose fibre storing by the process of described filler particles composition of matter,
Described filler particles is mixed with described cellulose fibre storing,
By described mixture at least one draining additive treating, and
Paper washer is formed from described mixture,
Wherein the described filler particles of at least 10% is the calcium carbonate of precipitation, and the described filler particles of at least 10% is the calcium carbonate of grinding,
Described cellulose fibre storing comprises a lot of cellulose fiber peacekeeping water,
Described composition of matter improves the performance of draining additive described in described paper washer, and
Wherein said draining additive is the polymer containing amine, comprises allylamine/acrylamide copolymer and polyvinylamine.
2. method according to claim 1, wherein said paper washer by removing some water to be formed from described mixture.
3. method according to claim 1, wherein calcium carbonate described at least some is selected from a kind of form by the pulpous state calcium carbonate of the calcium carbonate do not disperseed, dispersion, chalk and their groups of forming.
4. method according to claim 1, wherein at least part of described calcium carbonate is the pulpous state calcium carbonate form of dispersion, and the pulpous state calcium carbonate of described dispersion comprises at least one be selected from acrylic acid polymer dispersant, polyphosphate sodium dispersant, kaolin slurry and their any combination further.
5. method according to claim 1, the blend of wherein said filler particles is the calcium carbonate of the calcium carbonate of the grinding of 50% and the precipitation of 50%.
6. method according to claim 1, wherein said composition of matter is coagulant.
7. method according to claim 1, wherein said composition of matter is selected from the coagulant in the group that is made up of inorganic coagulant, organic coagulant, polycondensation coagulant and their any combination.
8. method according to claim 1, wherein said composition of matter has 200 to 1,000, the coagulant of molecular weight in 000 scope.
9. method according to claim 1, wherein said composition of matter is coagulant, described coagulant is selected from by alum, sodium aluminate, polyaluminium chloride, the aluminium base chloride of hydroxyl, hydroxy Al chloride, poly-polymeric aluminum chloride, Sulfated polyaluminium chloride, polysilicate sulfuric acid aluminium, ferric sulfate, iron chloride, epichlorohydrin-dimethylamine (EPI-DMA), the polymer that EPI-DMA ammonia is crosslinked, the polymer of dichloro ethylene and ammonia, the polymer of dichloro ethylene, the polymer of dimethylamine, the condensation polymer of multifunctional diethylentriamine, the condensation polymer of multifunctional tetren, the condensation polymer of multifunctional hexamethylenediamine, the condensation polymer of multifunctional dichloro ethylene, melamine polymers, formaldehyde resin polymer, in the group of positively charged vinyl-addition polymer and their any combination compositions.
10. method according to claim 1, wherein said composition of matter is AcAm/DADMAC copolymer.
11. methods according to claim 1, wherein said draining additive is polyamide-polyamine-chloropropylene oxide PAE.
12. methods according to claim 1, wherein draining additive is paper washer 0.3 to 5kg draining additive per ton relative to the ratio of described paper washer solid portion.
13. methods according to claim 1, the wherein described composition of matter process of at least part of described GCC particle.
14. methods according to claim 1, wherein said PCC particle all need not described composition of matter process.
15. methods according to claim 1, wherein said paper washer has solid portion, and the described filler particles in described paper washer forms the gross mass being greater than paper washer solid portion described in 50%.
16. methods according to claim 1, wherein said draining additive, and described composition of matter carries identical charges.
17. methods according to claim 1, the blend of wherein said filler particles comprises the one be selected from by organic pigment, inorganic pigment, clay, talcum, titanium dioxide, hibbsite, barium sulfate, magnesium hydroxide and their groups of forming further.
18. 1 kinds increase interactional method between draining additive and the cellulose fibre being mixed with filler particles, said method comprising the steps of:
When there is not cellulose fibre storing by the preliminary treatment of described filler particles composition of matter,
Pretreated filler particles is mixed with cellulose fibre, and
By gained mixture at least one draining additive treating,
Wherein said filler particles selects in the group of the calcium carbonate of free sedimentation, the calcium carbonate of grinding and their any combination compositions,
Described composition of matter suppresses filler particles described in described draining additive adhesion, and
Wherein said draining additive is the polymer containing amine, comprises allylamine/acrylamide copolymer and polyvinylamine.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110068223.8A CN102677535B (en) | 2011-03-11 | 2011-03-11 | The method of dewatering efficiency, increase plate wet web strength, increase plate wet strength and raising filler confining force is improved in papermaking |
| US13/272,714 US8465623B2 (en) | 2008-11-26 | 2011-10-13 | Method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in papermaking |
| PCT/US2012/024049 WO2012125235A2 (en) | 2011-03-11 | 2012-02-07 | A method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in papermaking |
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| CN201110068223.8A CN102677535B (en) | 2011-03-11 | 2011-03-11 | The method of dewatering efficiency, increase plate wet web strength, increase plate wet strength and raising filler confining force is improved in papermaking |
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| US4943349A (en) * | 1980-10-21 | 1990-07-24 | Papeteries De Gascogne | Process for preparing a sheet material with improved on-machine retention |
| CN101736656A (en) * | 2008-11-26 | 2010-06-16 | 纳尔科公司 | Method of increasing filler content in papermaking |
| CN101802304A (en) * | 2007-09-12 | 2010-08-11 | 纳尔科公司 | Controllable filler prefloculation using a dual polymer system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943349A (en) * | 1980-10-21 | 1990-07-24 | Papeteries De Gascogne | Process for preparing a sheet material with improved on-machine retention |
| CN101802304A (en) * | 2007-09-12 | 2010-08-11 | 纳尔科公司 | Controllable filler prefloculation using a dual polymer system |
| CN101736656A (en) * | 2008-11-26 | 2010-06-16 | 纳尔科公司 | Method of increasing filler content in papermaking |
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