CN114960290B - Cover paper special for license, and preparation method and application thereof - Google Patents
Cover paper special for license, and preparation method and application thereof Download PDFInfo
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- CN114960290B CN114960290B CN202210621851.2A CN202210621851A CN114960290B CN 114960290 B CN114960290 B CN 114960290B CN 202210621851 A CN202210621851 A CN 202210621851A CN 114960290 B CN114960290 B CN 114960290B
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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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
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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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
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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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
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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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/22—Condensation polymers of aldehydes or ketones
-
- 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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/24—Polyesters
-
- 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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/26—Polyamides; Polyimides
-
- 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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/28—Organic non-cellulose fibres from natural polymers
- D21H13/30—Non-cellulose polysaccharides
-
- 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
-
- 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
- D21H17/25—Cellulose
- D21H17/26—Ethers thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- 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
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
-
- 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
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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
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention provides a special cover paper for a license, and a preparation method and application thereof, wherein the special cover paper for the license is prepared from the following raw materials in parts by weight; the special cover paper for the license is prepared by selecting cotton pulp and wood pulp with specific parts as main preparation raw materials and adding polymer fibers, so that the finally obtained special cover paper for the license has the advantages of higher tearing strength, higher folding endurance, higher wet strength and excellent thermal stability, and also has the advantage of lower cost, and is suitable for batch production and application.
Description
Technical Field
The invention belongs to the technical field of paper, and particularly relates to cover paper special for a license, and a preparation method and application thereof.
Background
Paper making is generally carried out by pulping, proportioning and manufacturing fiber raw materials, the paper performance depends on the paper variety and application, and the raw material configuration, manufacturing method and process technology of paper with different varieties and performances are different. At present, the paper application is steadily developed from information paper to packaging paper and other industries, varieties and purposes, the varieties are continuously increased, the performance is also improved, and the functions are also improved.
At present, passports are frequently used as personal identification, and are required to have good surface friction resistance, high tearing resistance and high folding strength; in addition, many passports have been made anti-counterfeiting on the inner page of the passport, such as watermark anti-counterfeiting, security thread anti-counterfeiting, fluorescent fiber anti-counterfeiting, printing ink anti-counterfeiting, and other anti-counterfeiting modes. CN101319475a discloses a method for producing environment-friendly anti-counterfeiting cover paper, which adopts 100% of fiber raw materials to produce base paper, wherein the weight ratio of the selected fiber raw materials to the weight ratio of needle pulp is 50-65%, mercerized pulp is 10-20%, cotton pulp is 20-30%, the base paper is produced by pulp board breaking, pulping treatment, batching, pulp conveying, pulp box forming, drying and dewatering, and winding in a split roll manner, and then the base paper is sequentially subjected to dip dyeing, dip latex, base coating, anti-counterfeiting printing and top coating to produce the anti-counterfeiting cover paper. The cover paper has outstanding tearing resistance and folding resistance and good anti-counterfeiting performance. The invention has the advantages of easy processing and manufacturing, low production cost, environmental protection, anti-counterfeiting performance and tearing resistance, and the obtained environmental protection anti-counterfeiting cover paper is suitable for being made into various certificate covers, in particular to an environmental protection anti-counterfeiting passport cover. CN108532355a discloses a process for manufacturing environment-friendly cover paper; the method comprises the following steps: a. according to mass fraction, fluffing 40-50% of needle pulp, 20-30% of broadleaf pulp, 10-15% of mercerized pulp and 15-25% of cotton pulp by a hydraulic pulper for 40-60 min; b. the fluffed slurry is put into a beating machine for beating for 20-30 min; c. placing the pulped slurry into a slurry mixing tank, adjusting the pH value of the slurry to 5.5-6.5, and diluting the concentration of the slurry to 0.5-0.6%; d. and (3) conveying the prepared slurry to a paper machine for papermaking, and finally dehydrating, squeezing and drying to obtain the environment-friendly cover paper.
However, the existing cover paper has poor performance stability and high price, and is not suitable for industrialized mass production.
Therefore, developing a cover paper special for a license with high stability and low cost is a technical problem which needs to be solved in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the cover paper special for the license, and the preparation method and the application thereof, wherein the preparation raw materials of the cover paper special for the license comprise the combination of cotton pulp, wood pulp, polymer fibers, cationic starch, sodium carboxymethyl cellulose and a wet strength agent in specific parts, and the cover paper special for the license has high strength, high tear resistance, high moisture resistance, high stability and lower cost, and is very suitable for mass production.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides cover paper special for a license, which comprises the following raw materials in parts by weight:
the cotton pulp can be 21 parts by weight, 22 parts by weight, 23 parts by weight, 24 parts by weight, 25 parts by weight, 26 parts by weight, 27 parts by weight, 28 parts by weight, 29 parts by weight, 30 parts by weight or the like.
The wood pulp may be 41, 42, 43, 44, 45, 46, 47, 48, 49, etc. parts by weight.
The polymer fiber may be 21 parts by weight, 22 parts by weight, 23 parts by weight, 24 parts by weight, 25 parts by weight, 26 parts by weight, 27 parts by weight, 28 parts by weight, 29 parts by weight, or the like.
The cationic starch may be 1.02 parts by weight, 1.04 parts by weight, 1.06 parts by weight, 1.08 parts by weight, 1.1 parts by weight, 1.12 parts by weight, 1.14 parts by weight, 1.16 parts by weight, 1.18 parts by weight, 1.2 parts by weight, 1.25 parts by weight, 1.3 parts by weight, or 1.35 parts by weight, etc.
In the present invention, the cationic starch may be selected from conventional commercial products in the papermaking field, for example, cationic starch produced by Zaozhuang Jin Ke chemical Co., ltd.
The sodium carboxymethyl cellulose may be 0.62 parts by weight, 0.64 parts by weight, 0.66 parts by weight, 0.68 parts by weight, 0.7 parts by weight, 0.72 parts by weight, 0.74 parts by weight, 0.76 parts by weight, or 0.78 parts by weight, etc.
The wet strength agent may be 1.65 parts by weight, 1.6 parts by weight, 1.65 parts by weight, 1.7 parts by weight, 1.75 parts by weight, 1.8 parts by weight, 1.85 parts by weight, 1.9 parts by weight, 1.95 parts by weight, or the like.
The latex may be 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight, 1 part by weight 0 part by weight, 11 parts by weight, 12 parts by weight, 13 parts by weight, 14 parts by weight, or the like.
The invention provides cover paper special for a license, a preparation method and application thereof. The special cover paper for the license is prepared by selecting cotton pulp and wood pulp with specific parts as main preparation raw materials and adding polymer fibers, so that the finally obtained special cover paper for the license has the advantages of higher tearing strength, higher folding endurance, higher wet strength and excellent thermal stability, and also has the advantage of lower cost, and is suitable for batch production and application.
The "license" in the cover paper special for the license provided by the invention refers to various certificates, such as a passport, a driving license, a wedding license, an off-wedding license or a graduation license, and the like.
Preferably, the wood pulp comprises softwood pulp.
Preferably, the polymer fibers include any one or a combination of at least two of polyethylene terephthalate fibers (PET fibers), polylactic acid fibers (PLA fibers), polyvinyl formal fibers, or polyaramid fibers.
Preferably, the wet strength agent comprises any one or a combination of at least two of a polyamide epichlorohydrin resin (PAE resin), or a urea formaldehyde resin (UF resin) or a melamine formaldehyde resin (MF resin).
Preferably, any one or a combination of at least two of the latex polyvinyl alcohol emulsion, the aqueous polyurethane emulsion or the cowhide emulsion.
In a second aspect, the present invention provides a method for preparing cover paper for a license according to the first aspect, the method comprising the steps of:
(1) Pulping cotton pulp and wood pulp respectively to obtain cotton pulp slurry and wood pulp slurry;
(2) Mixing the cotton pulp slurry obtained in the step (1) with wood pulp slurry, adding high polymer fiber for pulp preparation, and then adding cationic starch for mixing to obtain mixed slurry;
(3) Carrying out paper machine papermaking on the mixed slurry obtained in the step (2), adding sodium carboxymethylcellulose and a wet strength agent in the paper machine papermaking process, and drying to obtain base paper;
(4) And (3) coating latex on the surface of the base paper obtained in the step (3), and calendaring to obtain the cover paper special for the license.
Preferably, the freeness of the pulp of step (1) is 38-42 ° SR, for example 38.4 ° SR, 38.8 ° SR, 39.2 ° SR, 39.6 ° SR, 40 ° SR, 40.4 ° SR, 40.8 ° SR, 41.2 ° SR or 41.6 ° SR, etc.
Preferably, the wood pulp of step (1) has a freeness of 20-24 ° SR, such as 20.4 ° SR, 20.8 ° SR, 21.2 ° SR, 21.6 ° SR, 22 ° SR, 22.4 ° SR, 22.8 ° SR, 23.2 ° SR, or 23.6 ° SR, etc.
Preferably, the mixing time of adding the cationic starch for mixing in the step (2) is 20-40 min, for example 22min, 24min, 26min, 28min, 30min, 32min, 34min, 36min or 38min, etc.
Preferably, the step (2) of adding the cationic starch again for mixing is performed under stirring.
Preferably, the step (3) further comprises a drying step before the calendering.
Preferably, the step (3) further comprises a slitting step after the calendering.
Preferably, the coating of step (4) is performed using a paper machine middle sizing device or an paper outer sizing device.
As a preferable technical scheme of the invention, the preparation method comprises the following steps:
(1) Pulping cotton pulp to 38-42 DEG SR to obtain cotton pulp slurry, pulping wood pulp to 20-24 DEG SR to obtain wood pulp slurry;
(2) Mixing the cotton pulp slurry obtained in the step (1) with wood pulp slurry, adding high polymer fiber for pulp preparation, and then adding cationic starch for mixing for 20-30 min to obtain mixed slurry;
(3) Carrying out paper machine papermaking on the mixed slurry obtained in the step (2), adding sodium carboxymethylcellulose and a wet strength agent in the paper machine papermaking process, and drying to obtain base paper;
(4) And (3) coating latex on the surface of the base paper obtained in the step (3) by using a middle sizing device or an outer sizing device of the paper machine, and drying, calendaring and cutting to obtain the cover paper special for the license.
In a third aspect, the present invention provides the use of a cover paper for a license as described in the first aspect for the manufacture of a passport, a graduation, a academic or a pass.
Compared with the prior art, the invention has the following beneficial effects:
the cover paper special for the license provided by the invention comprises the combination of cotton pulp, wood pulp, high polymer fiber, cationic starch, sodium carboxymethyl cellulose, a wet strength agent and latex in specific parts. The special cover paper for the license is prepared by selecting cotton pulp and wood pulp with specific parts as main raw materials and adding polymer fibers, so that the finally obtained special cover paper for the license has higher tearing strength, higher folding endurance, higher wet strength and excellent thermal stability, and specifically, the gram weight of the special cover paper for the license is 148-152 g/m 2 The longitudinal tearing strength is 5748-6637 mN, the transverse tearing strength is 7686-8565 mN, and the longitudinal dry tensile strength is 8.99-10.56N/m 2 The transverse dry tensile strength is 13.86-17.98N/m 2 The folding strength is 14760-17381 twice, the wet strength is 57.36-63.42%, and the thermal stability is 2.37-2.67, is suitable for batch production and application.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
Example 1
The special cover paper for the license comprises the following raw materials in parts by weight:
the preparation method of the cover paper special for the license provided by the embodiment comprises the following steps:
(1) Pulping cotton pulp to 40 DEG SR to obtain cotton pulp slurry; pulping softwood pulp to 22 DEG SR to obtain softwood pulp;
(2) Mixing the cotton pulp slurry obtained in the step (1) with the softwood pulp slurry, adding PET fibers (Funa-9, shanghai) limited, and adding cationic starch, and mixing for 30min under stirring to obtain mixed slurry;
(3) Making the mixed slurry obtained in the step (2) by a paper machine, adding carboxymethyl cellulose (well-known Weiyi technology Co., ltd.) and PAE resin (color-combining chemical technology (Jinan) Co., ltd.) in the paper making process by the paper machine, and drying to obtain base paper;
(4) And (3) coating PVA emulsion on the surface of the base paper obtained in the step (3) by utilizing a middle sizing device of a paper machine, drying, calendaring and cutting to obtain the cover paper special for the license.
Example 2
The special cover paper for the license comprises the following raw materials in parts by weight:
the preparation method of the cover paper special for the license provided by the embodiment comprises the following steps:
(1) Pulping cotton pulp to 38 DEG SR to obtain cotton pulp slurry; pulping softwood pulp to 20 DEG SR to obtain softwood pulp;
(2) Mixing the cotton pulp slurry obtained in the step (1) with the softwood pulp slurry, adding PET fibers (Funa-9, shanghai) limited, and adding cationic starch, and mixing for 25min under stirring to obtain mixed slurry;
(3) Carrying out paper machine manufacturing on the mixed slurry obtained in the step (2), adding carboxymethyl cellulose and PAE resin (color convergence chemical technology (Jinan) limited company) in the paper machine manufacturing process, and drying to obtain base paper;
(4) And (3) coating the cowhide glue on the surface of the base paper obtained in the step (3) by utilizing a middle glue applying device of a paper machine, and drying, calendaring and cutting to obtain the cover paper special for the license.
Example 3
The special cover paper for the license comprises the following raw materials in parts by weight:
the preparation method of the cover paper special for the license provided by the embodiment comprises the following steps:
(1) Pulping cotton pulp to 42 DEG SR to obtain cotton pulp slurry; pulping softwood pulp to 24 DEG SR to obtain softwood pulp;
(2) Mixing the cotton pulp slurry obtained in the step (1) with the softwood pulp slurry, adding PET fibers (Funa-9, shanghai) limited, and adding cationic starch, and mixing for 25min under stirring to obtain mixed slurry;
(3) Carrying out paper machine manufacturing on the mixed slurry obtained in the step (2), adding carboxymethyl cellulose and PAE resin (color convergence chemical technology (Jinan) limited company) in the paper machine manufacturing process, and drying to obtain base paper;
(4) And (3) coating the cowhide glue on the surface of the base paper obtained in the step (3) by utilizing a middle glue applying device of a paper machine, and drying, calendaring and cutting to obtain the cover paper special for the license.
Example 4
The cover paper special for the license is different from the cover paper in the embodiment 1 only in that in the preparation method, the cotton pulp is pulped to 30 DEG SR in the step (1), the softwood pulp is pulped to 18 DEG SR, and other components, the use amounts and the preparation method are the same as the embodiment 1.
Example 5
The cover paper for the license is different from the cover paper in the embodiment 1 only in that the cotton pulp is pulped to 50 DEG SR in the step (1) of the preparation method, the softwood pulp is pulped to 30 DEG SR, and other components, the use amounts and the preparation method are the same as the embodiment 1.
Comparative example 1
The cover paper for license was different from example 1 only in that the amount of cotton pulp added was 15 parts by weight, the amount of softwood pulp added was 45 parts by weight, and other components, amounts and preparation methods were the same as in example 1.
Comparative example 2
The license-dedicated cover paper is different from example 1 only in that glass fibers are used instead of PET fibers, and other components, amounts and preparation methods are the same as those of example 1.
Comparative example 3
The cover paper for license was different from example 1 only in that no PET fiber was added and the ratio of the other components was kept unchanged.
Performance test:
(1) Gram weight: testing according to the test method provided by GB/T451.2-2002; (2) tear strength: testing according to the test method provided by GB/T455-2002;
(3) Dry tensile: testing according to the test method provided by GB/T12914-2018;
(4) Fold resistance (double): testing according to a testing method provided by GB/T457-2008;
(4) Wet strength: dry and wet tensile were tested according to the test method provided in GB/T12914-2018, and then the ratio of wet and dry tensile was calculated;
(5) Thermal stability: baking at 140 deg.C for 5min, and calculating length change rate.
The cover papers for the license provided in examples 1 to 5 and comparative examples 1 to 3 were tested according to the above test methods, and the test results are shown in table 1:
TABLE 1
As can be seen from the data in table 1, the cover paper special for the license provided by the invention has higher tearing strength, higher number of times of folding endurance, higher wet strength and excellent thermal stability; specifically, the cover papers for license obtained in examples 1 to 6 had a grammage of 148 to 152g/m 2 The longitudinal tearing strength is 5748-6637 mN, the transverse tearing strength is 7686-8565 mN, and the longitudinal dry tensile strength is 8.99-10.56N/m 2 The transverse dry tensile strength is 13.86-17.98N/m 2 The folding endurance is 14760-17381 twice, the wet strength is 57.36-63.42%, and the thermal stability is 2.37-2.67%.
Analysis of example 1 and comparative example 1 revealed that the addition of a low amount of cotton pulp and a high addition of wood pulp significantly reduced the folding strength, tensile strength and wet strength of the resultant cover paper, indicating poor strength and wet stability.
As can be seen from comparative examples 1 and 2, the cover paper prepared by using glass fibers instead of polymer fibers has reduced tear strength, folding strength, wet strength and thermal stability, and has poor overall properties.
Further, as can be seen from comparative examples 1 and 3, the tear strength, folding strength and wet strength of the cover paper obtained without adding the polymer fiber were significantly reduced, indicating that the overall properties were very poor compared with example 1.
Further comparing example 1 with examples 4 to 5, it was found that the tear strength, dry tensile, folding endurance and wet strength of the cover paper prepared without the freeness falling within the preferred ranges defined in the present invention were slightly lowered.
The applicant states that the present invention is described by way of the above embodiments as a cover sheet for a license, and a method of making and using the same, but the present invention is not limited to the above embodiments, i.e., it does not mean that the present invention must be practiced by relying on the above embodiments. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.
Claims (11)
1. The cover paper special for the license is characterized by comprising the following raw materials in parts by weight:
the emulsion comprises any one or a combination of at least two of polyvinyl alcohol emulsion, aqueous polyurethane emulsion or kraft emulsion;
the polymer fiber comprises any one or a combination of at least two of polyethylene terephthalate fiber, polylactic acid fiber, polyvinyl formal fiber or aromatic polyamide fiber;
the beating degree of the cotton pulp is 38-42 DEG SR, and the beating degree of the wood pulp is 20-24 DEG SR;
the gram weight of the cover paper special for the license is 148-152 g/m 2 The longitudinal tearing strength is 5748-6637 mN, and the transverse tearing strength is 7686-8565 mNThe longitudinal dry tensile strength is 8.99-10.56N/m 2 The transverse dry tensile strength is 13.86-17.98N/m 2 The folding endurance is 14760-17381 twice.
2. The license-specific cover paper of claim 1, wherein the wood pulp comprises softwood pulp.
3. The license-specific cover paper according to claim 1, wherein the length of the polymer fiber is 6 to 12mm.
4. The license-specific cover paper according to claim 1, wherein the wet strength agent comprises any one or a combination of at least two of a polyamide epichlorohydrin resin, a urea-formaldehyde resin, or a melamine formaldehyde resin.
5. A method for producing the cover paper for a license as claimed in any one of claims 1 to 4, characterized by comprising the steps of:
(1) Pulping cotton pulp and wood pulp respectively to obtain cotton pulp slurry and wood pulp slurry;
(2) Mixing the cotton pulp slurry obtained in the step (1) with wood pulp slurry, adding high polymer fiber for pulp preparation, and then adding cationic starch for mixing to obtain mixed slurry;
(3) Carrying out paper machine manufacturing on the mixed slurry obtained in the step (2), adding sodium carboxymethylcellulose and a wet strength agent in the paper machine manufacturing process, and drying to obtain base paper;
(4) And (3) coating latex on the surface of the base paper obtained in the step (3), and calendaring to obtain the cover paper special for the license.
6. The method according to claim 5, wherein the mixing time for adding the cationic starch in the step (2) is 20-40 min.
7. The process of claim 5, wherein the step (2) of adding cationic starch is performed under stirring.
8. The method of claim 5, wherein the step (3) further comprises a step of drying before calendering.
9. The method of claim 5, wherein the step (3) further comprises a slitting step after the calendering.
10. The method of claim 5, wherein the coating of step (4) is performed using a middle sizing device of a paper machine or an external sizing device of paper.
11. Use of a cover paper for a license as claimed in any one of claims 1 to 4 in the manufacture of a passport, a graduation, a academic or a pass.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5935383A (en) * | 1996-12-04 | 1999-08-10 | Kimberly-Clark Worldwide, Inc. | Method for improved wet strength paper |
| CN101319475A (en) * | 2008-07-05 | 2008-12-10 | 山东凯丽特种纸股份有限公司 | Method for producing environment-friendly false proof cover paper |
| CN101377063A (en) * | 2008-10-13 | 2009-03-04 | 中国印钞造币总公司 | Reinforcing fiber for making paper and preparing method thereof as well as paper product containing the same |
| CN101487205A (en) * | 2009-02-27 | 2009-07-22 | 山东凯丽特种纸股份有限公司 | Production method of environment-friendly leatheret |
| CN101974869A (en) * | 2010-11-18 | 2011-02-16 | 浙江华邦特种纸业有限公司 | High air permeability non-woven base wallpaper and products thereof |
| CN101974868A (en) * | 2010-11-18 | 2011-02-16 | 浙江华邦特种纸业有限公司 | Method for manufacturing high-breathability non-woven wallpaper body paper and product |
| CN102191725A (en) * | 2011-03-12 | 2011-09-21 | 郭友实 | Production method of high-performance latex paper |
| CN103074807A (en) * | 2013-01-28 | 2013-05-01 | 浙江华邦特种纸业有限公司 | Making method of ultrathin low-weight sound-absorbing decoration paper |
| CN109371748A (en) * | 2018-12-11 | 2019-02-22 | 山东凯丽特种纸股份有限公司 | A kind of leatherette paper and its production method with flame retarding function |
| CN110055806A (en) * | 2019-04-18 | 2019-07-26 | 襄阳金飞环彩色包装有限公司 | A kind of moisture-proof paper of high tenacity and preparation method thereof |
| CN112626922A (en) * | 2020-12-15 | 2021-04-09 | 昆山楚宏纸塑材料有限公司 | Production process of special passport cover filling paper |
-
2022
- 2022-06-01 CN CN202210621851.2A patent/CN114960290B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5935383A (en) * | 1996-12-04 | 1999-08-10 | Kimberly-Clark Worldwide, Inc. | Method for improved wet strength paper |
| CN101319475A (en) * | 2008-07-05 | 2008-12-10 | 山东凯丽特种纸股份有限公司 | Method for producing environment-friendly false proof cover paper |
| CN101377063A (en) * | 2008-10-13 | 2009-03-04 | 中国印钞造币总公司 | Reinforcing fiber for making paper and preparing method thereof as well as paper product containing the same |
| CN101487205A (en) * | 2009-02-27 | 2009-07-22 | 山东凯丽特种纸股份有限公司 | Production method of environment-friendly leatheret |
| CN101974869A (en) * | 2010-11-18 | 2011-02-16 | 浙江华邦特种纸业有限公司 | High air permeability non-woven base wallpaper and products thereof |
| CN101974868A (en) * | 2010-11-18 | 2011-02-16 | 浙江华邦特种纸业有限公司 | Method for manufacturing high-breathability non-woven wallpaper body paper and product |
| CN102191725A (en) * | 2011-03-12 | 2011-09-21 | 郭友实 | Production method of high-performance latex paper |
| CN103074807A (en) * | 2013-01-28 | 2013-05-01 | 浙江华邦特种纸业有限公司 | Making method of ultrathin low-weight sound-absorbing decoration paper |
| CN109371748A (en) * | 2018-12-11 | 2019-02-22 | 山东凯丽特种纸股份有限公司 | A kind of leatherette paper and its production method with flame retarding function |
| CN110055806A (en) * | 2019-04-18 | 2019-07-26 | 襄阳金飞环彩色包装有限公司 | A kind of moisture-proof paper of high tenacity and preparation method thereof |
| CN112626922A (en) * | 2020-12-15 | 2021-04-09 | 昆山楚宏纸塑材料有限公司 | Production process of special passport cover filling paper |
Non-Patent Citations (1)
| Title |
|---|
| 纺织用纸线原纸的研究;党育红等;《中国造纸学报》;20061231;第21卷(第04期);全文 * |
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