CN101351596A - A paper substrate having enhanced print density - Google Patents

A paper substrate having enhanced print density Download PDF

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Publication number
CN101351596A
CN101351596A CNA2006800497889A CN200680049788A CN101351596A CN 101351596 A CN101351596 A CN 101351596A CN A2006800497889 A CNA2006800497889 A CN A2006800497889A CN 200680049788 A CN200680049788 A CN 200680049788A CN 101351596 A CN101351596 A CN 101351596A
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CN
China
Prior art keywords
paper substrate
weight
glueing composition
paper
composition
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CNA2006800497889A
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Chinese (zh)
Inventor
宋建成
杨森
黄衍初
凯皮尔·M·辛
迈克尔·F·凯尼格
戴维·B·希尔米戴恩
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Nevamar Corp
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Nevamar Corp
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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
    • D21H21/14—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 characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • D21H21/14—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 characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • 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
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/07—Nitrogen-containing compounds
    • 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
    • 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
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/36—Polyalkenyalcohols; Polyalkenylethers; Polyalkenylesters
    • 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
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D21H17/45—Nitrogen-containing groups
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • 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
    • D21H21/14—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 characterised by function or properties in or on the paper
    • D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching

Abstract

The present invention relates to a sizing composition that, when applied to paper substrate, creates a substrate, preferably suitable for inkjet printing, having increased print density, print sharpness, low HST, and/or image dry time, the substrate preferably having high brightness and reduced color-to-color bleed as well. In addition, the present invention relates to a method of reducing the HST of a paper substate by applying the sizing composition to at least one surface thereof. Further, the application relates to methods of making and using the sizing composition, as well as methods of making and using the paper containing the sizing composition.

Description

Paper substrate with printing density of increase
The application requires in the benefit of priority of the U.S. Provisional Patent Application 60/732,828 of submission on November 1st, 2005 according to 35 U.S.C. § 119 (e), and its full content is incorporated into to come in by reference here.
Invention field
The present invention relates to glueing composition, when being coated to it on paper substrate, produced and be applicable to preferably that having of inkjet printing increases printing density, prints acutance, low HST and/or the substrate of image dried time, described substrate also preferably has Se-Se diffusion of high brightness and reduction.In addition, the present invention relates to go up the method for the HST that reduces paper substrate by at least one surface that described glueing composition is coated to paper substrate.In addition, the application relates to preparation and uses the method for described glueing composition, and the method for preparing and use the paper that comprises described glueing composition.
Background of invention
The ink-jet recording system of present known use water-base ink.These systems produce noise usually hardly and can be used for the polychrome record of trade, family and commercial print application easily.The record-paper that is used for ink mist recording is known.For example see United States Patent (USP) 5,270,103,5,657,064,5,760,809,5,729,266,4,792,487,5,405,678,4,636,409,4,481,244,4,496,629,4,517,244,5,190,805,5,320,902,4,425,405,4,503,118,5,163,973,4,425,405,5,013,603,5,397,619,4,478,910,5,429,860,5,457,486,5,537,137,5,314,747,5,474,843,4,908,240,5,320,902,4,740,420,4,576,867,4,446,174,4,830,911,4,554,181,6,764,726 and 4,877,680, it incorporates into to come in by reference and all here.
Yet conventional paper substrate such as above-mentioned those leak, print acutance and/or image dried at the excellent printing density of balance, HST, Se-Se and remain not enough on aspect the time.Therefore, need be for being used for the paper substrate of inkjet printing, those substrates that especially preferably have high brightness provide such performance function.
The accompanying drawing summary
Fig. 1: only first sectional view that exemplifies embodiment that is included in the paper substrate in the paper substrate of the present invention.
Fig. 2: only second sectional view that exemplifies embodiment that is included in the paper substrate in the paper substrate of the present invention.
Fig. 3: only the 3rd sectional view that exemplifies embodiment that is included in the paper substrate in the paper substrate of the present invention.
Detailed Description Of The Invention
The inventor has invented following glueing composition, when it being coated on paper or the paperboard substrates, can improve printing density, Se-Se diffusion, printing acutance and/or the image dried time of substrate.In addition, described paper substrate preferably has high brightness.
Described glueing composition can comprise pigment.The example of pigment is clay, calcium carbonate, calcium sulfate hemihydrate and calcium sulfate dehydrate, comprises the preferred winnofil of calcium carbonate of powdered whiting and silica-processing calcium carbonate in any form.When described pigment was calcium carbonate, it can be any form.Example comprises powdered whiting and/or winnofil.Preferred commerce can purchase product be available from Specialty MineralsInc. provide with Jetcoat 30 those, available from Specialty Minerals Inc. provide with JetcoatMD1093 those, available from Omya Inc provide with XC3310-1 those and available from OmyaInc. with OmyaJet B5260, those that C4440 and 6606 provides.
Described pigment can have any surface area.Comprise those pigment, comprise having surface area, be preferably greater than 30 meters squared per gram, more preferably greater than 50 meters squared per gram, most preferably greater than those of 100 meters squared per gram greater than 20 meters squared per gram with high surface.This scope comprises more than or equal to 1,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,100 meters squared per gram, comprise any and all scopes and the subrange that wherein comprise.
Described glueing composition can comprise the pigment of any amount.Gross weight based on the solid in described composition, described composition can comprise the pigment of 0-99 weight %, based on the gross weight of the solid in described composition, preferably comprises at least 15 weight %, more preferably at least 30 weight %, the most preferably pigment of at least 45 weight %.Gross weight based on the solid in described composition, this scope can comprise the pigment of 0,1,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,100 weight %, comprises any and all scopes and the subrange that wherein comprise.Based on the gross weight of the solid in described composition, most preferred amount is the pigment of about 52 weight %.
Described glueing composition can comprise adhesive.The example of adhesive includes but not limited to polyvinyl alcohol, Amres (Kymene type), Bayer Parez, the polychloride emulsion, modified starch such as Hydroxyethyl Starch, the starch or derivatives thereof comprises cationic with oxidised form and for example from corn and/or potato, polyacrylamide, modified polyacrylamide, polyalcohol, polyalcohol carbonyl adduct, glyoxal (ethanedial)/polyolcondensation product, polyamide, chloropropylene oxide, glyoxal (glyoxal), glyoxal urea (glyoxal urea), glyoxal, aliphatic polymeric isocyanate, isocyanates, two isocyanic acids 1,6-hexylidene ester, vulcabond, polyisocyanate, polyester, mylar, polyacrylate, polyacrylate resin, acrylate and methacrylate.Can use any combination of adhesive, embodiment comprise comprise with the polyvinyl alcohol combination as the starch of multicomponent adhesive or the glueing composition of its modifier.
When being the multicomponent adhesive composition, an embodiment relates to the system that comprises starch and derivative and polyvinyl alcohol at least.In this embodiment, based on the gross weight of solid in described glueing composition, the ratio of starch/PVOH solid can be any ratio, as long as both all are present in the described composition.Based on the gross weight of solid in described glueing composition, the ratio of the starch that described glueing composition can comprise/PVOH weight % solid is 99/1-1/99, is preferably 50/1-1/5, more preferably is at most 10/1-1: 2, most preferably be at most 8/1-1/1.This scope comprises 99/1,50/1,25/1,15/1,10/1,9/1,8/1,7/1,6/1,5/1,4/1,3/1,2/1,1/1,2/3,1/2,1/10,1/25,1/50,1/99, comprises wherein any and all scopes and subrange.Most preferably starch/PVOH ratio is 6/1.
When using polyvinyl alcohol, produce polyvinyl alcohol (PVOH) by hydrolyzed poly vinyl acetate (PVA) at applying glue solution and/or in paper.Acetate groups is replaced by alcohol radical and the more acetate groups of the high more expression of hydrolysis is replaced.Hydrolysis/molecular weight is low more, and then the viscosity of PVOH is more little and easy more water-soluble.Described PVOH can have the % hydrolysis of 100%-75%.Described % hydrolysis can be 75,76,78,80,82,84,85,86,88,90,92,94,95,96,98 and 100% hydrolysis, comprises wherein any and all scopes and subrange.Preferably, the % hydrolysis of PVOH is greater than 90%.
Described glueing composition can comprise the adhesive of any amount.Based on the gross weight of the solid in described composition, described glueing composition can comprise 0-99 weight %, preferably at least 10 weight %, more preferably at least 20 weight %, the most preferably at least a adhesive of at least 30 weight %.Gross weight based on the solid in described composition, this scope can comprise 0,1,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,100 weight %, comprises wherein any and all scopes and subrange.Based on the gross weight of the solid in described composition, most preferably be about 37 weight % adhesives.
In one embodiment, when described glueing composition comprised adhesive and pigment, the weight ratio of described adhesive/pigment can be any ratio.Described adhesive pigment weight ratio can be 99/1-1/99, is preferably 50/1-1/10, and more preferably 25/1-1/5 most preferably is 10/1-1/3.This scope comprises 99/1,50/1,25/1,10/1,5/1,2/1,1/1,1/2,2/3,1/3,1/4,1/5,10/1,25/1,50/1 and 99/1, comprises wherein any and all scopes and subrange.Most preferably adhesive/pigment weight ratio is 7/10.
Described glueing composition can comprise at least a itrogenous organic substance matter.Exemplary itrogenous organic substance matter is compound, and oligomer and polymer are to comprise those of one or more quaternary ammonium functional group.This functional group can change widely and comprise and replaces and unsubstituted amine, imines, acid amides, urethanes, quaternary ammonium group, dicyandiamide etc.The example of these materials is a polyamine, polymine, the polymer and the copolymer of diallyldimethylammonium chloride (DADMAC), the copolymer of vinyl pyrrolidone (VP) and quaternized diethylamino ethyl-methyl acrylate (DEAMEMA), polyamide, the cation polyurethane latex, cationic polyvinyl alcohol, poly-alkylamine dicyandiamide copolymers, amine glycidol based addition polymer (amineglycigyl addition polymers), poly-[oxygen ethene (dimethylimino) ethylidene (dimethylimino) ethylidene] dichloride.The example of nitrogen substance is included in those materials of mentioning in the US patent 6,764,726, and the document is incorporated into to come in by reference and all here.Most preferred nitrogen substance is the polymer and the copolymer of diallyldimethylammonium chloride (DADMAC).
Described glueing composition can comprise at least a itrogenous organic substance matter of any amount.Based on the gross weight of the solid in described composition, described glueing composition can comprise 0-99 weight %, preferred 0.5-50 weight %, more preferably 1-20 weight %, the most preferably described itrogenous organic substance matter of 2-10 weight %.Gross weight based on the solid in described composition, this scope can comprise 0,0.5,1,2,3,4,5,6,7,8,9,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,100 weight %, comprises wherein any and all scopes and subrange.In a preferred embodiment, based on the gross weight of the solid in described composition, described composition comprises the described itrogenous organic substance matter of about 8 weight %.
Described glueing composition can comprise at least a inorganic salts.Suitable inorganic salts can be unit price and/or divalence and/or trivalent and can comprise the hydration complex compound of the described inorganic salts of any level.Exemplary inorganic salt is those inorganic salts and the hydration complex compound thereof of the periodic table of elements the 1st, 2 and 13 families, comprises monohydrate, dihydrate, trihydrate, tetrahydrate etc.Cationic metal preferably can be sodium, calcium, magnesium and aluminium.The anion balance ion of the cationic metal of described inorganic salts can be any halogen such as chlorion, bromide ion, fluorine ion etc. and/or hydroxyl.Most preferred inorganic salts are sodium chloride.
Described glueing composition can comprise at least a inorganic salts of any amount.Based on the gross weight of the solid in described composition, described glueing composition can comprise 0-99 weight %, preferred 0.25-25 weight %, more preferably 0.5-5 weight %, the most preferably inorganic salts of 1-3 weight %.Gross weight based on the solid in described composition, this scope comprises 0,0.25,0.5,1,2,3,4,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,100 weight %, comprises any and all scopes and the subrange that comprise here.In a preferred embodiment, based on the gross weight of the solid in described composition, described glueing composition comprises the inorganic salts of about 2.5 weight %.
Described glueing composition comprises at least a optical brightener (OBA).Suitable OBA can be those that mention among those and the USP 6,890,454 that mentions among the USSN 60/654,712 that submitted on February 19th, 2005, and it here incorporates into to come in by reference and all.Described OBA can be commercial available from Clariant.In addition, described OBA can be cationic and/or anionic.The example of OBA is Leucophore BCW and the Leucophore FTS that the commerce from Clariant can get.In one embodiment, the OBA that comprises in described glueing composition is cationic.
Described glueing composition can comprise at least a anionic OBA of any amount.Based on the gross weight of the solid in described composition, described glueing composition can comprise 0-99 weight %, preferred 5-75 weight %, more preferably 10-50 weight %, most preferably the anionic OBA of 20-40 weight %.Gross weight based on the solid in described composition, this scope can comprise the anionic OBA of 0,1,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,99 weight %, comprises any and all scopes and the subrange that comprise here.In a preferred embodiment, based on the gross weight of the solid in described composition, described glueing composition comprises the anionic OBA of about 35 weight %.
Described glueing composition can comprise at least a cationic OBA of any amount.Based on the gross weight of the solid in described composition, described glueing composition can comprise 0-99 weight %, preferred 0.5-25 weight %, more preferably 1-20 weight %, the most preferably cationic OBA of 5-15 weight %.Gross weight based on the solid in described composition, this scope can comprise the cationic OBA of 0,1,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,99 weight %, comprises any and all scopes and the subrange that comprise here.In a preferred embodiment, based on the gross weight of the solid in described composition, described glueing composition comprises the cationic OBA of about 8 weight %.
The present invention and relate to the paper substrate that comprises described any glueing composition.
Described paper substrate comprises the cellulose fibre width of cloth.The source of described fiber can be from any fibre plant.Described paper substrate of the present invention can comprise recycled fibers and/or protofibre.Recycled fibers lives through at least dried and is different from protofibre with this fiber.
Gross weight based on described paper substrate, described paper substrate of the present invention can comprise 1-99 weight %, preferred 5-95 weight %, the cellulose fibre of 60-80 weight % most preferably, comprise 1,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95 and 99 weight %, and comprise wherein any and all scopes and subrange.
Although described fiber source can be any source, the preferred source form of described cellulose fibre is in cork and/or hardwood.Based on the total amount of the cellulose fibre in the described paper substrate, described paper substrate of the present invention can comprise 1-100 weight %, the cellulose fibre that derives from softwood species of preferred 5-95 weight %.Total amount based on the cellulose fibre in described paper substrate, this scope comprises 1,2,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95 and 100 weight %, comprises wherein any and all scopes and subrange.
Based on the total amount of the cellulose fibre in the described paper substrate, described paper substrate of the present invention can comprise 1-100 weight %, the cellulose fibre that derives from hardwood species of preferred 5-95 weight %.Total amount based on the cellulose fibre in described paper substrate, this scope comprises 1,2,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95 and 100 weight %, comprises wherein any and all scopes and subrange.
When described paper substrate comprised hardwood and cork fibrous simultaneously, the ratio of preferred described hardwood/softwood was 0.001-1000.This scope can comprise 0.001,0.002,0.005,0.01,0.02,0.05,0.1,0.2,0.5,1,2,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,200,300,400,500,600,700,800,900 and 1000, and these scopes comprise any and all scopes and subrange wherein and comprise any scope and subrange in this ratio inverse.
In addition, the described cork and/or the hardwood fiber that comprise of paper substrate of the present invention can carry out modification by physics and/or chemical method.The example of physical method includes but not limited to electromagnetic method and Mechanical Method.The electricity method of modifying includes but not limited to relate to the method that makes described fiber contact electromagnetic-energy such as light and/or electric current.The method of mechanically modifying includes but not limited to relate to the method that makes abiotic object contact described fiber.The example of this abiotic object comprises the object with sharp-pointed and/or root face edge.These methods also for example relate to methods such as cutting, mediate, smash to pieces, pierce through.
The example of chemical method includes but not limited to conventional chemical fiber modification means, and it comprises crosslinked thereon and the precipitation and complexation thing.The example of this fibre modification can be but is not limited in patent 6,592,717,6,592,712,6,582,557,6,579,415,6,579,414,6,506,282,6,471,824,6,361,651,6,146,494, H1,704,5,731,080,5,698,688,5,698,074,5,667,637,5,662,773,5,531,728,5,443,899,5,360,420,5,266,250,5,209,953,5,160,789,5,049,2354,986,882,4,496,427,4,431,481,4,174,417,4,166,894,4,075, those modification examples of finding in 136 and 4,022,965, above-mentioned patent documentation is incorporated into to come in by reference and all.Other method for modifying fibers sees the U.S. Patent application of submitting on February 19th, 2,005 60/654,712, the U.S. Patent application of submitting on February 21st, 2,006 11/358,543, the U.S. Patent application of submitting on June 2nd, 2,006 11/445,809, and the U.S. Patent application 11/446 of submission on June 2nd, 2006,421, it can comprise the optical brightener (being OBA) that interpolation is described here, and above-mentioned here patent application is incorporated into to come in by reference and all.
An example of recycled fibers is " fine ".The source of " fine " can be present in SaveAll fiber, recirculation stream, waste stream, the waste material fiber logistics.The amount that is present in " fine " in the described paper substrate can change by regulating the speed that this logistics joins in the described paper production process.
Described paper substrate preferably comprises the combination of hardwood fiber, cork fibrous and " fine " fiber.As mentioned above, " fine " fiber be recirculation and have any length.The average length of fine is not more than 100 μ m usually, preferably is not more than 90 μ m, more preferably no more than 80 μ m, most preferably is not more than 75 μ m.The length of described fine preferably is not more than 5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95 and 100 μ m, comprises wherein any and all scopes and subrange.
Described paper substrate can comprise the fine of any amount.The gross weight of the described fiber that comprises based on described paper substrate, described paper substrate can comprise the fine of 0.01-100 weight %, preferred 0.01-50 weight %, most preferably 0.01-15 weight %.The gross weight of the described fiber that comprises based on described paper substrate, described paper substrate comprises the fine that is not more than 0.01,0.05,0.1,0.2,0.5,1,2,3,4,5,6,7,8,9,10,12,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95 and 100 weight %, comprises wherein any and all scopes and subrange.
Described paper substrate also can comprise internal sizing composition and/or outer glueing composition.Described internal sizing composition can be on the fiber that is coated to the web of fiber end during the papermaking, and described outer glueing composition can be coated on the fiber by size press (size press) and/or coating machine.Above-mentioned glueing composition of the present invention can be the interior and/or outer glueing composition that paper substrate of the present invention comprises.
Fig. 1-Fig. 3 has shown the different embodiments of the described paper substrate 1 in paper substrate of the present invention.Fig. 1 has shown the paper substrate 1 with cellulose fibre 3 and glueing composition 2, and wherein said glueing composition 2 has minimum infiltration to cellulose fibre 3.For example, when glueing composition being coated on the cellulose fibre width of cloth, can implement this embodiment.
Fig. 2 has shown the paper substrate 1 with cellulose fibre 3 and glueing composition 2, and wherein said glueing composition 2 is penetrated in the cellulose fibre 3.The permeable formation 4 of described paper substrate 1 defines wherein described at least applying glue solution and infiltrates the zone of prime number cellulose fiber peacekeeping between described cellulose fibre.Described permeable formation can be to the 1-99% of the entire cross section of the described paper substrate of small part, comprise 1,2,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95 and 99% of described paper substrate, comprise wherein any and all scopes and subrange.For example, when before coating process, joining glueing composition in the described cellulose fibre, can implement this embodiment, this embodiment can be combined with subsequently coating process if desired.For example, add point and can be positioned at the size press place.
Fig. 3 has shown the paper substrate 1 with cellulose fibre 3 and applying glue solution 2, and wherein said glueing composition 2 roughly evenly distributes and spreads all over described cellulose fibre 3.For example, when before coating process, joining glueing composition in the described cellulose fibre, can implement this embodiment, this embodiment can be combined with subsequently coating process if desired.Exemplary adding point can wet end, thin stock (thin stock) and thick stock (thick stock) in paper-making process in.
Described paper substrate can contact continuously and/or simultaneously with described cellulose fibre by any component that makes described applying glue solution and make.Further, described contact can take place with the cellulose that comprises any above-mentioned amount and the component of described applying glue solution providing on the acceptable concentration level of paper substrate of the present invention.Described contact can occur in any time in the paper-making process, includes but not limited to thick stock, thin stock, head box (head box) and coating machine, and the preferred point that adds is at the thin stock place.Other adds the suction hose that point comprises machine chest, former hopper and fan pump.Preferably, the component of described applying glue solution can be together and/or single and/or separate in the coating in conjunction with and prepare in advance, and be coated on the described web of fiber by size press and/or coating machine.
Described paper of the present invention or cardboard can use known traditional handicraft to be prepared.Be used to form with preparation and administration to coating preparation and in paper and cardboard field, know to the method and apparatus on the paper substrate.For example see with reference to above-mentioned G.A.Smook, and its list of references of quoting is incorporated into to come in by reference.All these known methods can be used to implement the present invention and no longer are described in detail.
Described paper substrate can comprise the described glueing composition of any amount.The amount that described paper substrate can comprise described glueing composition is a 70-300lbs/ ton paper, by preferred 80-250lbs/ ton paper, more preferably 100-200lbs/ ton paper, most preferably 125-175lbs/ ton paper.This scope comprises 70,80,90,100,110,120,130,140,150,160,170,180,190,200,210,220,230,240,250,260,270,280,290 and 300lbs/ ton paper, comprises wherein any and all scopes and subrange.In a preferred embodiment, to comprise the amount of the glueing composition that size press applies be 150lbs/ ton paper substrate to described paper substrate.
Consider the above-mentioned preferred amounts of the glueing composition that comprises in the paper substrate of the present invention, in conjunction with the above-mentioned consumption of pigment, adhesive, nitrogen-containing compound and inorganic salts; Can easily calculate the amount separately of every kind of pigment comprising in the described paper, adhesive, nitrogen-containing compound, inorganic salts.For example, gross weight based on solid in the described composition, if in described applying glue solution, there is the pigment of 50 weight %, and described paper substrate per ton comprises the described glueing composition of 150lbs, then described paper substrate comprises 50% * 150lbs/ ton paper=75lbs pigment/ton paper, based on the gross weight of described paper substrate, it is 75lbs/2000lbs * 100=3.75 weight % pigment.
Described paper substrate comprises at least a pigment of any amount.Based on the gross weight of described paper substrate, described paper substrate can comprise 0.5 weight-10 weight %, preferred 1-8 weight %, more preferably 1.5-6 weight %, the most preferably pigment of 2-5 weight %.Gross weight based on described paper substrate, this scope comprises the pigment of 0.5,1,1.5,2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7,7.5,8,8.5,9,9.5 and 10 weight %, comprises wherein any and all scopes and subrange.
Described paper substrate comprises at least a adhesive of any amount.Based on the gross weight of described paper substrate, described paper substrate can comprise 0.1 weight %-7 weight %, preferred 0.2-5 weight %, more preferably 0.3-3 weight %, the most preferably adhesive of 1-3 weight %.Gross weight based on described paper substrate, this scope comprises the adhesive of 0.1,0.2,0.3,0.4,0.5,1,1.5,2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7 and 7.5 weight %, comprises wherein any and all scopes and subrange.
Described paper substrate comprises at least a nitrogen-containing compound of any amount.Based on the gross weight of described paper substrate, described paper substrate can comprise 0.01 weight %-5 weight %, preferred 0.05-2 weight %, more preferably 0.1-1.5 weight %, the most preferably nitrogen-containing compound of 0.25-1 weight %.Gross weight based on described paper substrate, this scope comprises the nitrogen-containing compound of 0.01,0.02,0.03,0.05,0.07,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1,1.2,1.4,1.6,1.8,2.0,2.2,2.4,2.6,2.8 and 3 weight %, comprises wherein any and all scopes and subrange.
Described paper substrate comprises at least a inorganic salts of any amount.Based on the gross weight of described paper substrate, described paper substrate can comprise 0.001 weight %-3 weight %, preferred 0.01-2.5 weight %, more preferably 0.02-1 weight %, the most preferably inorganic salts of 0.05-0.5 weight %.Gross weight based on described paper substrate, this scope comprises the inorganic salts of 0.001,0.002,0.005,0.007,0.01,0.02,0.03,0.05,0.06,0.07,0.08,0.09,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.2,1.4,1.6,1.8,2.0,2.2,2.4,2.6,2.8 and 3 weight %, comprises wherein any and all scopes and subrange.
Described paper substrate can comprise the OBA of any amount.Described OBA can be cationic and/or anionic.Described OBA can provide by aforesaid glueing composition and/or in described paper substrate.For example, described OBA can and even carry out premixed with fiber at the wet end of papermaking before headbox.Use OBA: the preferred embodiment of fiber is found in the U.S. Patent application of submitting on February 19th, 2,005 60/654,712, the U.S. Patent application of submitting on February 21st, 2,006 11/358,543, the U.S. Patent application of submitting on June 2nd, 2,006 11/445, the U.S. Patent application 11/446 that on June 2nd, 809 and 2006 submitted to, 421, they incorporate into to come in by reference and all here.
In an embodiment of the invention, described paper substrate comprises inner OBA and external coated OBA.Described inner OBA can be cationic or anionic, but is preferably anionic.Described external coated OBA can be cationic or anionic, but is preferably cationic.As mentioned above, described external coated OBA preferably applies in size press as the component of the described glueing composition above-mentioned preferred amounts with OBA.Yet outside OBA also can apply at coating area.
Described paper substrate of the present invention can have the OBA of any amount.In one embodiment, described OBA exists with enough amounts so that described paper has 80% GE brightness at least.Described GE brightness is preferably at least 80,85,90,91,92,93,94,95,96,97,98,99 and 100%, comprises wherein any and all scopes and subrange.
In addition, described paper can have the OBA of appropriate amount and other additive (as dyestuff) thus paper preferably has at least 130 CIE whiteness as described in making.Described CIE whiteness can be at least 130,135,140,145,150,155,160,165,170,175,180,185190,195 and 200, comprises wherein any and all scopes and subrange.
In one embodiment, described substrate comprises the OBA of effective dose.The OBA of effective dose makes GE brightness be at least 90, preferably is at least 92, more preferably is at least 94 and most preferably be at least 95% brightness.Described OBA can be the mixture of above-mentioned inner OBA and external coated OBA, no matter be cationic and/or anionic, as long as it is effective dose.
The density of the width of cloth of the present invention, quantitatively (basis weight) and thickness (caliper) can carry out wide in range change, use conventional quantitative, density and thickness based on the paper-based article of being made by the described width of cloth.After paper calendering and any clipping (nipping) that for example may be associated with coating subsequently or compacting, paper of the present invention or cardboard preferably have the final thickness of the about 35mils of about 1mils-, but if desired, described thickness can exceed this scope.More preferably described thickness is the about 20mils of about 4mils-, most preferably is the about 17mils of about 7mils-.The thickness that has or do not have a described paper substrate of any coating can be 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,17,20,22,25,27,30,32 and 35, comprises wherein any and all scopes and subrange.
Paper substrate of the present invention preferably demonstrates about 10lb/3000ft 2-Yue 500lb/3000ft 2Quantitatively, but the width of cloth quantitatively can exceed this scope if desired.More preferably described quantitatively is about 30lb/3000ft 2-Yue 200lb/3000ft 2, most preferably be about 35lb/3000ft 2-Yue 150lb/3000ft 2Describedly quantitatively can be 10,12,15 17,20,22,25,30,32,35,37,40,45,50,55,60,65,70,75,80,85,90,95,100,110,120,130,140,150,160,170,180,190,200,225,250,275,300,325,350,375,400,425,450,500lb/3000ft 2, comprise wherein any and all scopes and subrange.
Can comprise wherein any and all scopes and subrange by any above-mentioned final densities that quantitatively goes out described paper divided by any above-mentioned THICKNESS CALCULATION.Preferably, the final densities of described paper promptly quantitatively divided by thickness, is preferably about 6lb/3000ft 2The about 14lb/3000ft of/mil- 2/ mil, but width of cloth density can exceed the present invention if desired.More preferably described width of cloth density is about 7lb/3000ft 2The about 13lb/3000ft of/mil- 2/ mil most preferably is about 9lb/3000ft 2The about 12lb/3000ft of/mil- 2/ mil.
The described width of cloth also can comprise other conventional additives, as starch, expandable microspheres, inorganic filler, filler, adhesive, reservation auxiliary agent and reinforcing copolymer.In spendable these fillers, comprise organic and inorganic pigment such as polymer beads such as polystyrene latex and polymethyl methacrylate and mineral matter such as calcium carbonate, kaolin and talcum.Other conventional additives includes but not limited to wet-strength resins, internal sizes (internal size), dry strength resin, alum, filler, pigment and dyestuff.Internal sizing can help prevent surperficial sizing material to be penetrated in the paper, therefore makes it be retained on its surface with maximum efficiency.Described internal sizes comprises any internal sizes that is generally used for the paper machine wet end.These internal sizes comprise for example rosin sizing material, ketene dimer and polymer, and alkenyl succinic anhydrides.Based on the weight of dry paper, described internal sizes is used with the level of the about 0.25 weight % of about 0.05 weight %-usually.The method and the material that are used for carrying out with rosin internal sizing are discussed in E.Strazdins at The Sizing ofPaper, and second edition is edited by W.F.Reynolds, Tappi Press, and 1989, in the 1-33 page or leaf.The suitable ketene dimer that is used for internal sizing sees U.S.Pat.No.4, and 279,794, it incorporates into to come in by reference and all, with see BP Nos.786,543,903,416,1,373,788 and 1,533,434 and see the open No.0666368 A3 of european patent application.Ketene dimer can commercial obtain, as from Hercules Incorporated (Wilmington, Aquapel.RTM. Del) and Precis.RTM sizing material.The ketenes polymer that is used for internal sizing is described in following document: submitted on June 6th, 1994 corresponding to U.S. patent application No.08/254, the open No.0629741A1 of 813 european patent application; Submitted on February 7th, 1994 corresponding to U.S. patent application No.08/192, the open No.0666368A3 of 570 european patent application; With the U.S. patent application No.08/601 that submitted to February 16 in 1996,113.The alkenyl succinic anhydrides that is used for internal sizing sees U.S. patent No.4,040,900, it incorporates to come in and sees the The Sizing of Paper of C.E.Farley and R.B.Wasser, second edition by reference and all into, W.F.Reynolds edits, Tappi Press, 1989, in the 51-62 page or leaf.(Baton Rouge La) can commercially obtain multiple alkenyl succinic anhydrides from Albemarle Corporation.
Described paper substrate also can make by other optional, materials is contacted with described cellulose fibre.Any time that can occur in the paper-making process that contacts of described optional, materials and described cellulose fibre, include but not limited to thick stock, thin stock, head box, size press, water tank and coating machine.Other adds the suction hose that point comprises machine chest, former hopper and fan pump.The component of described cellulose fibre, described glueing composition and/or optional components can be with any compound mode in succession, contact with one another continuously and/or side by side.The described cellulose fibre component of described glueing composition can or be carried out premixed with any combination during the paper-making process before adding paper-making process.
Described paper substrate can be suppressed in the pressor areas that contains one or more pressing tongs (nip).Yet, can use common known any drawing method in the field of papermaking.Described pressing tongs can be but is not limited to single woollen blanket (single felted) pressing tongs, bistrichiasis blanket (double felted) pressing tongs, the roll-in pincers in press and prolongs pressing tongs.Yet, can use common known any pressing tongs in field of papermaking.
Described paper substrate can be carried out drying in the arid region.Can use common known any drying means in field of papermaking.Described arid region can comprise and comprise drying cylinder, roller drying, Condebelt drying, IR or other drying means as known in the art and machinery.Described paper substrate can be dried to the water that comprises any selected amount.Preferably, described substrate is dried to comprise and is less than or equal to 10% water.
Described paper substrate can be passed through size press, and this moment, common known any size applicator all was acceptable in field of papermaking.For example, described size press can be slot type size press (puddlemode size press) (for example inclination, vertical, level) or metering size press (measuring (rod metered) as blade metering (blademetered), rod).At described size press place, substrate as described in sizing material can contact as adhesive.As required, the optional wet end that these identical sizing materials can be joined paper technology.After the applying glue, described paper substrate can be carried out once more drying or not carry out drying according to common other known drying meanss in above-mentioned illustrational method and the field of papermaking.Described paper substrate can be dried to the water that contains any selected amount.Preferably, described substrate is dried to comprise and is less than or equals 10% water.Preferably, described size applicator is the slot type size press.
Described paper substrate can be carried out calendering by common known any calendering method in the field of papermaking.More particularly, for example, can use the calendering (wet stack calendering) of wet heap, the calendering (dry stackcalendering) of dried heap, pucellas calendering (steel nip calendering), hot soft calendering (hot soft calendering) or prolongation pincers calenderings (extended nip calendering) etc.When without wanting to be limited by theory, depend on its purpose purposes, think that the existence of expandable microspheres of the present invention and/or composition and/or particle can reduce and alleviate the demand of certain paper substrate to harsh calendering method and environment.
Described paper substrate can be carried out accurate grinding according to common known any precise grinding process in the field of papermaking.Accurate grinding relates to the method that friction treatment is processed the surface of paper substrate.Can and put on its calendering method or not carry out accurate grinding in succession and/or side by side described paper substrate with this calendering method.The example of accurate grinding is found in U.S.'s publication application 20040123966 and its citing document, and the USSN 60/810,181 that submitted on June 2nd, 2006, and they incorporate into to come in by reference and all here.
The He Shi feathering test value (Hercules Sizing Test Value (" HST ")) of selecting described substrate is to provide desired water resistance.Use the method for TAPPI 530pm-89 to measure described HST.Described paper substrate of the present invention can have any HST.In some embodiments, described HST may be up to 400,300,200 and 100 seconds.In addition, described HST can be low to moderate 0.1,1,5 and 10 second.Yet in preferred implementation of the present invention, described HST preferably less than 5 seconds, was more preferably less than 3 seconds less than 10 seconds, most preferably less than about 1 second.Described HST can be 0.001,0.01,0.05,0.1,0.5,1,1.5,2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7,7.5,8,8.5,9,9.5 and 10 second, comprises wherein any and all scopes and subrange.Known as those skilled in the art, described HST can be directly with described substrate quantitatively and the known other factors of those skilled in the art change.Based on above-mentioned information, those skilled in the art can use common process and method to calculate, determine and/or estimate to be used to provide the specific HST of the described substrate of the image water resistance that requires.
Described paper substrate of the present invention can have any black optical density (black optical density) that TAPPI METHOD T 1213sp-03 measures.Described black optical density can be 0.5-2.0, more preferably 1.0-1.5.Described black optical density can be 0.5,0.6,0.7,0.8,0.9,1.0,1.05,1.06,1.07,1.08,1.09,1.10,1.11,1.12,1.13,1.14,1.15,1.16,1.17,1.18,1.19,1.2,1.3,1.4 and 1.5, comprises wherein any and all scopes and subrange.
From density, use following equation can easily calculate resistance to water:
(OD of the OD/ dipping printing ink area of dipping printing ink area) * 100=% resistance to water.
Described paper substrate of the present invention can have any patience water.Described paper substrate can have at least 90%, and preferably at least 95%, more preferably greater than 98%, most preferably, comprise wherein any and all scopes and subrange greater than 100% resistance to water.
In an embodiment of the invention, described paper substrate can comprise the pigment and the adhesive of effective dose.The pigment of effective dose and adhesive are to give at least 1.0 to described paper, preferred 1-2, and more preferably 1-1.5 and the most preferably amount of the black optical density of 1.1-1.3 comprise any here and all scopes and subrange.
The present invention relates to reduce the method for the HST of paper substrate.Preferably, above-mentioned glueing composition contacts in size press or the area of application with the substrate that has a HST and comprise the cellulose fibre width of cloth and above-mentioned optional, materials, has less than the 2nd HST of a described HST and comprises the paper substrate of described glueing composition, the described cellulose fibre width of cloth and optional, materials with preparation.Although described the 2nd HST is less than a described HST, the present invention preferably reduces a described HST at least 10%, more preferably reduces at least 25%, most preferably reduces at least 50%.This reduction scope can be at least 10,15,20,25,30,35,40,45,50,60,75,80,95 and 99% of a described HST, comprises wherein any and all scopes and subrange.
Explain the present invention in more detail by means of following embodiment embodiment, these embodiment are used for limiting the scope of the invention by any way.
Embodiment
Embodiment 1
Prepare following size press preparation, be used for the not body paper of applying glue (base paper) of treatment surface.
Table 1
Chemical substance 1 2 3 4 5 6 7
Jetcoat MD1093 winnofil 100 100 100
XC3310-1, powdered whiting 100 100
TX-75NX， 100
The calcium carbonate of treatment of silica
TX-75ZX, the calcium carbonate of treatment of silica 100
Polyvinyl alcohol 20 10 10 10 10
Oxidized starch 30 60 60 100
Cationic starch 100 60
Diallyl dimethyl ammoniumchloride (Polydadmac) 10 10 10 10 10
Calcium chloride 5 5 5 5 5
The % solid 13 13 13 13 13 13 13
pH 6.7 7.0 7.3 7 6.9 6.8 6.9
Brookfield viscosity (Brookfield viscosity) 27 46 80 55 118 38 27
Temperature, F 117 120 117 130 130 130 130
Use metering bar type size press (rod metering size press), painted size press preparation is coated on the 90gsm body paper of surperficial not applying glue.Target coating weight or coating amount (pick up) are 6gsm.At room temperature use the nip pressure (nip pressure) of 90psi on steel-steel laboratory calender, to carry out calendering.The target smoothness is the 125Sheffield smoothness.
Assessment is from the printing performance of the outturn of embodiment 1 on Kodak Versamark 5000 digital printers.Obtained excellent printing quality.The printing density result of the test of the sample on probation that provides for embodiment 1 has been provided in the following table.
Table 2
Condition Printing density on Kodak Versamark 5000
1 1.15
2 1.12
3 1.13
4 1.09
5 1.11
6 1.18
7 1.14
Embodiment 2
Prepared to have quantitatively and be the paper substrate of 24lb/1300 square feet, and in size press, glueing composition has been coated on its two surface.The described glueing composition that is coated to described paper substrate is those compositions according to following table 2.
Table 2
Figure A20068004978800191
Figure A20068004978800201
Gen Floc F71100 (General Chemicals) and Cartafix VXZ (Clariant) both have the chemical property of diallyl dimethyl ammoniumchloride (poly (dadmac)) and are nitrogen substances.
Amres, from the kymene of Kamira wet-intensity resin also is a nitrogen substance.
Mowiol 28-99 (Clariant) is the variant of PVOH, its be 99% hydrolysis and have a high molecular.
Starch and PVOH boiling and to be diluted to solid level be about 15% respectively.According to the formulation of tabulating above each preparation and thoroughly mutually mixing.
At first obtain whole % solids of greater than desired value---15%---, because remaining composition all has the solid level greater than 15%.
For every kind of preparation, measured actual initial % solid and be diluted to 15% as much as possible then.With every kind of preparation deliver to be pre-configured into C2S slot type operation 14 " in the test size press.
With the paper dryer after the size press to 4.2-5.0% humidity.
Subscript [a] expression average, it means that each numeral is the average of 4 or more a plurality of readings.
Before the oblique line sign and two numerals afterwards represent reading respectively from described paper two sides.
Use the X-rite opacimeter, measure ink jet printing density by optical density.According to the density of TAPPIMETHOD T 1213sp-03 be the transmittance of transparent material or opaque material reflectivity 10 being the optics-negative logarithm at the end, and have equation: optical density=log10 1/R, wherein R=reflectivity.Use following opacimeter: the X-Rite opacimeter, produce by X-Rite Inc..Density is the function of catoptrical percentage.By this density method, use following equation can easily measure resistance to water and % diffusion (bleed):
The calculating of % resistance to water:
The calculating of [OD/ of dipping printing ink area does not flood the OD of printing ink area] * 100=% resistance to water % diffusion:
[(near the OD of the OD-paper of dipping printing ink area)/do not flood the OD of printing ink area] * 100=% diffusion.
According to making multiple change in the above-mentioned the present invention of being taught in and variation is possible.Therefore, be appreciated that within the scope of the claims, except that implementing the present invention special the description here.
As in full employed, with scope as the simple expression way that is described in each value in the scope that comprises all subranges wherein.
With respect to the relevant portion that relates to theme of the present invention and all embodiments, all references of quoting here, and the reference that they are quoted is incorporated into to come in by reference at this.

Claims (20)

1. glueing composition comprises:
At least a pigment;
At least a adhesive;
At least a itrogenous organic substance matter; With
At least a inorganic salts.
2. glueing composition according to claim 1 comprises:
At least a pigment;
At least two kinds of adhesives;
At least a itrogenous organic substance matter; With
At least a inorganic salts.
3. glueing composition according to claim 2, wherein said at least two kinds of adhesives are polyvinyl alcohol and starch.
4. glueing composition according to claim 3, wherein said polyvinyl alcohol and starch are that 8/1-1/1 exists with starch/polyvinyl alcohol weight ratio.
5. glueing composition according to claim 4, wherein based on the gross weight of the solid in the described composition, the amount of all adhesives is at least 20 weight %.
6. glueing composition according to claim 4, its gross weight that further comprises based on the solid in the described composition is the optical brightener of 20-40 weight %.
7. glueing composition according to claim 4, it further comprises optical brightener.
8. glueing composition according to claim 8, wherein said optical brightener is cationic.
9. glueing composition according to claim 1 comprises:
Based on the gross weight of the solid in the described composition, at least a pigment of at least 30 weight %;
Based on the gross weight of the solid in the described composition, at least a adhesive of at least 20 weight %;
Based on the gross weight of the solid in the described composition, at least a itrogenous organic substance matter of 1-20 weight %; With
Based on the gross weight of the solid in the described composition, at least a inorganic salts of 0.5-5 weight %.
10. glueing composition according to claim 9 comprises:
At least two kinds of adhesives, wherein said at least two kinds of adhesives are starch and polyvinyl alcohol, the weight ratio of starch/polyvinyl alcohol is 8/1-1/1; With
Optical brightener.
11. paper substrate comprises glueing composition according to claim 1.
12. paper substrate according to claim 11, wherein said paper substrate have at least 1.0 printing density and are no more than 10 seconds HST.
13. paper substrate according to claim 12, wherein said paper substrate has at least 95% resistance to water.
14. paper substrate comprises glueing composition according to claim 4.
15. paper substrate according to claim 14, wherein said paper substrate have at least 1.0 printing density and are no more than 10 seconds HST.
16. paper substrate according to claim 15, wherein said paper substrate has at least 95% resistance to water.
17. paper substrate comprises glueing composition according to claim 9.
18. paper substrate according to claim 17, wherein said paper substrate have at least 1.0 printing density and are no more than 10 seconds HST.
19. paper substrate according to claim 18, wherein said paper substrate has at least 95% resistance to water.
20. paper substrate comprises glueing composition according to claim 10, and has:
At least 1.0 printing density;
Be no more than 10 seconds HST; With
At least 95% resistance to water.
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