CN107338673B - Antibacterial painting and calligraphy paper with controllable ink moistening performance and preparation method thereof - Google Patents
Antibacterial painting and calligraphy paper with controllable ink moistening performance and preparation method thereof Download PDFInfo
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- CN107338673B CN107338673B CN201710608747.9A CN201710608747A CN107338673B CN 107338673 B CN107338673 B CN 107338673B CN 201710608747 A CN201710608747 A CN 201710608747A CN 107338673 B CN107338673 B CN 107338673B
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Images
Classifications
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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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/06—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
-
- 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
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- 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
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
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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
- D21H27/002—Tissue paper; Absorbent paper
- D21H27/004—Tissue paper; Absorbent paper characterised by specific parameters
- D21H27/005—Tissue paper; Absorbent paper characterised by specific parameters relating to physical or mechanical properties, e.g. tensile strength, stretch, softness
- D21H27/007—Tissue paper; Absorbent paper characterised by specific parameters relating to physical or mechanical properties, e.g. tensile strength, stretch, softness relating to absorbency, e.g. amount or rate of water absorption, optionally in combination with other parameters relating to physical or mechanical properties
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses antibacterial painting and calligraphy paper with controllable ink moistening performance and a preparation method thereof. The antibacterial painting and calligraphy paper with controllable ink moistening performance comprises raw materials and an auxiliary agent, wherein the raw materials comprise the following components in parts by weight: 50-70 parts of bleached bamboo pulp fiber and 30-50 parts of Chinese alpine rush fiber; the auxiliary agent comprises the following components in parts by weight: 0.8-1.6 parts of composite antibacterial agent, 0.1-0.4 part of dispersing agent, 0.05-0.1 part of retention aid and 1.0-10.0 parts of light calcium carbonate. According to the invention, the chitosan and inorganic silver ion composite antibacterial agent is used, so that the antibacterial and anticorrosive effects are achieved, and the reinforcing effect of the chitosan is utilized, so that various strength indexes of the paper sheet are improved; and the ink moistening performance of the paper is improved by controlling the using amount of the light calcium carbonate, so that the applicability of the writing and painting paper is improved.
Description
Technical Field
The invention belongs to the technical field of papermaking, and particularly relates to antibacterial painting and calligraphy paper with controllable ink moistening performance and a preparation method thereof.
Background
The painting and calligraphy paper is special paper special for calligraphy and painting in China, and is one of four treasures of the study in China. The performance indexes of the writing and drawing paper are many, and the paper mainly has the indexes of absorbency, ink moistening property, durability and strength. The paper sheet absorption and ink wetting are mainly related to the fiber raw material used in the production, and the antibacterial and antiseptic properties of the paper sheet are mainly determined by the production process.
At present, the painting and calligraphy paper is mainly prepared from cotton, hemp, bark and other raw materials as main materials, and is compounded with short fiber pulp such as broadleaf wood, Chinese alpine rush and the like, and the painting and calligraphy paper with excellent quality can be generated by utilizing the pulp.
In addition, some writing and painting paper continues to be the culture of bamboo pulp ancient paper, and the writing and painting paper is made by using bleached bamboo pulp, broad-leaved wood and the like. The bamboo pulp is adopted to prepare the auxiliary pulp for producing the painting and calligraphy paper, although the problem of shortage of raw material sources is relieved to a certain extent, the quality of the product is inevitably reduced, and even the requirement of quality standard cannot be met. Bamboo pulp and some auxiliary materials for making paper have high hemicellulose content and contain a small amount of impurities such as protein, pectin, mixed cells and the like, so that the painting and calligraphy paper has low porosity, low bulk, poor water absorption and poor air permeability, and further has certain defects of poor antibacterial and antiseptic properties and ink moistening properties of paper sheets.
Based on the current situation that the raw materials and paper sheets of the conventional machine-made writing and painting paper have poor antibacterial capability, a low-cost and high-efficiency antibacterial and antiseptic process is needed to be found to make up for the defect of poor durability of the machine-made writing and painting paper; meanwhile, a practical and controllable ink moistening property adjusting method is sought to produce writing and painting paper with different ink moistening properties, so that the requirements of different people are met.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the antibacterial painting and calligraphy paper with controllable ink moistening performance.
The invention also aims to provide a preparation method of the antibacterial painting and calligraphy paper with controllable ink moistening performance.
The purpose of the invention is realized by the following technical scheme: the antibacterial painting and calligraphy paper with controllable ink moistening performance comprises raw materials (slurry) and an auxiliary agent, wherein the raw materials (slurry) comprise the following components in parts by weight:
50-70 parts of bleached bamboo pulp
30-50 parts of asparagus pulp
The auxiliary agent comprises the following components in parts by weight:
the quantitative range of the antibacterial painting and calligraphy paper with controllable ink moistening performance is 35-45 g/m2。
The composite antibacterial agent is a composite antibacterial agent formed by compounding chitosan and an inorganic silver ion antibacterial agent.
The chitosan is preferably chitosan with the deacetylation degree of 90%; preferably, the degree of deacetylation is 90% and the molecular weight is 9.0X 104The chitosan of (4).
The inorganic silver ion antibacterial agent is preferably a nano silver antibacterial solvent.
The diameter of nano silver (Ag) particles of the nano silver antibacterial solvent is less than 0.5 nm; preferably 7600-Ag +25 in Japan oasis.
The dispersant is preferably polyethylene oxide (PEO).
The polyoxyethylene is preferably polyoxyethylene with neutral pH and 400 ten thousand molecular weight.
The retention aid is preferably cationic polyacrylamide.
The cationic polyacrylamide is preferably cationic polyacrylamide with the molecular weight of 300-400 ten thousand; more preferably a cationic polyacrylamide having a molecular weight of 400 ten thousand.
The light calcium carbonate (PCC) is preferably light calcium carbonate with the particle size of more than 1000 meshes; more preferably Guangzhou Liangjia chemical industry materials Co.Ltd CC 1250.
The preparation method of the antibacterial painting and calligraphy paper with controllable ink moistening performance comprises the following steps:
(I) preparing slurry: preparing the sizing agent for the upper net according to the proportion of the sizing agent and the auxiliary agent;
(II) preparation of base paper: and (2) forming a wet paper sheet from the prepared net-feeding pulp by a paper machine, then conveying the wet paper sheet to a pressing part through a net part, then drying the wet paper web of the pressed base paper, spraying a composite antibacterial agent on the surface of the dried base paper, and finally drying the sprayed re-wet paper sheet for the second time to obtain the antibacterial painting and calligraphy paper with controllable ink moistening performance.
The preparation method of the antibacterial painting and calligraphy paper with controllable ink moistening performance preferably comprises the following steps:
(1) according to the proportion of the pulp, pulping bleached bamboo pulp fibers and Chinese alpine rush fibers respectively, and then mixing the bleached bamboo pulp with the beating degree of 30-40 degrees SR and the Chinese alpine rush pulp with the beating degree of 35-45 degrees SR to obtain the pulp;
(2) adding a composite antibacterial agent, a dispersing agent, a retention aid and light calcium carbonate into the slurry obtained in the step (1) according to the proportion of the auxiliary agent to obtain an upper-net slurry, wherein the adding amount of the composite antibacterial agent in the slurry is 50% of the total mass of the composite antibacterial agent;
(3) molding the upper net pulp obtained in the step (2) by a cylinder mould former to obtain wet paper sheets;
(4) conveying the wet paper sheet obtained in the step (3) to a press part through a net part for pressing to obtain a base paper wet paper web;
(5) conveying the base paper wet paper web obtained in the step (4) to a front drying part through a net part for drying to obtain base paper;
(6) spraying a composite antibacterial agent on the two sides of the base paper obtained in the step (5) to obtain a rewet paper sheet;
(7) and (4) drying the rewetted wet paper obtained in the step (6) for the second time, and then drying the rewetted wet paper by a drying roller and a cold cylinder to obtain the antibacterial painting and calligraphy paper with controllable ink moistening performance.
The bleached bamboo pulp fiber in the step (1) is preferably bleached bamboo pulp fiber which is firstly pulped by a hydrapulper and then screened and deslagged.
The Chinese alpine rush fiber in the step (1) is preferably Chinese alpine rush fiber which is firstly pulped by a hydrapulper and then screened and deslagged.
The composite antibacterial agent in the step (2) is preferably prepared by the following method: stirring and dissolving chitosan in dilute acetic acid solution, adding an inorganic silver ion antibacterial agent, and standing to obtain a composite antibacterial agent; wherein the chitosan and the inorganic silver ion antibacterial agent are mixed according to the mass ratio of 1: 1.
The concentration of the dilute acetic acid solution is 3.0-4.0% by mass; preferably 3.5% by mass.
The concentration of the composite antibacterial agent in the steps (2) and (6) is 8.0-12.0% by mass; preferably 10% by mass.
The time for standing is preferably 5 hours or more.
The cylinder mould former in the step (3) is preferably a lateral flow type vacuum cylinder mould former.
The sizing concentration of the sizing agent for the upper net in the step (3) is 0.4-0.8%; preferably 0.5 to 0.6%.
The pressing in step (4) is preferably performed using a low-pressure line press roll.
The base wet paper web described in step (4) is preferably obtained by: and dehydrating the wet paper sheet by a curtain grain forming device to form grains, and then passing the wet paper sheet through two vacuum suction boxes, wherein the vacuum degrees are respectively 7kPa and 10 kPa.
The dryness of the base wet paper web in the step (4) is about 25%.
The drying in the step (5) adopts passing-through type non-contact slow drying; preferably, the drying is performed by a hot air dryer.
The temperatures of the first, second and third drying sections of the hot air dryer are 60 ℃, 100 ℃ and 80 ℃ respectively.
The dryness of the base paper in the step (5) is about 85 percent.
The spraying in the step (6) is preferably carried out by adopting a micro-turbulence low-pressure pulse atomization spraying device, and the composite antibacterial agent is sprayed on the two sides of the base paper, so that certain rewetting wet strength of the paper sheet is ensured, meanwhile, the composite antibacterial agent can be ensured to fully moisten the paper sheet, and no liquid drips in a transverse flow manner.
The rewetted wet sheet described in step (5) has a dryness of about 40%.
The drying in the step (7) adopts passing-through type non-contact slow drying; preferably, a three-section hot air drying oven is adopted for drying.
The temperatures of the first, second and third drying sections of the three-section hot air drying oven are respectively 60 ℃, 90 ℃ and 70 ℃.
The temperature of the drying roller in the step (7) is preferably 80 ℃.
The dryness of the antibacterial painting and calligraphy paper with controllable ink moistening performance in the step (7) is about 85-90%.
The preparation method of the antibacterial painting and calligraphy paper with controllable ink moistening performance further comprises the steps of coiling, cutting outside the machine and packaging the antibacterial painting and calligraphy paper with controllable ink moistening performance obtained in the step (7).
In the invention, the composite antibacterial agent is prepared by combining the slurry addition and the surface spraying, wherein the slurry addition of the composite antibacterial agent is 50 percent of the total dosage of the composite antibacterial agent.
Compared with the prior art, the invention has the following advantages and effects:
1. the invention provides an antibacterial painting and calligraphy paper with controllable ink moistening performance and a manufacturing process thereof. The antibacterial painting and calligraphy paper with controllable ink moistening performance adopts bleached bamboo pulp and asparagus pulp as raw materials, the two pulp fibers are high in whiteness and strength, the physical strength index of the finished paper is good, the bulk and the absorptivity of paper sheets can meet the use requirements of the painting and calligraphy paper, in addition, the length and the length of the fibers are proper, the ink absorptivity is good, and the ink moistening performance is good.
2. In order to realize controllable ink wettability, the invention adopts a process of adding light calcium carbonate (PCC), mainly utilizes a mode of adding PCC in slurry and utilizes the action of PCC particles on adsorbing ink particles to control the diffusion degree and the diffusion mode of ink.
3. In order to make up the problem that machine-made writing and painting paper is easy to mildew, the invention adopts an efficient and durable antibacterial and anticorrosion process, mainly utilizes a mode of adding chitosan into pulp and spraying chitosan and inorganic antibacterial agent compound on the surface of paper sheet to endow paper sheet with antibacterial property, and simultaneously chitosan can improve the strength of paper sheet to a certain extent.
4. The invention uses chitosan which is a natural antibacterial agent and has excellent bioactivity, biocompatibility and antibacterial property. Its antibacterial action is mainly dependent on the positive charge of chitosan, which can bind to negatively charged moieties in proteins. The binding of chitosan to bacterial proteins can inactivate bacteria or fungi. The natural degradation forms the low molecular weight chitosan, and the low molecular weight chitosan can permeate into microbial cells, so that the conversion of RNA is prevented, and the growth of bacteria is limited to a certain extent.
5. The antibacterial agent adopts an inorganic antibacterial agent containing silver ions, and the inorganic antibacterial agent has the advantages of safety, good heat resistance, lasting slow release, difficult color change and the like, and is very suitable for long-term storage of the writing and painting paper. Meanwhile, silver ions have the advantages of high antibacterial activity, low toxicity and difficulty in accumulation in human bodies, so that the silver ions are widely applied.
6. The invention utilizes the function that the light calcium carbonate particles are not beneficial to ink diffusion in the production process, and controls the content of the light calcium carbonate in the paper and the ink diffusion condition, thereby not only being capable of adjusting the ink moistening property to meet the use requirements of different people, but also being capable of improving the bulk and the durability of the writing and drawing paper; in addition, the composite antibacterial agent prepared from the natural antibacterial agent chitosan and the inorganic silver ion antibacterial agent is used for greatly improving the antibacterial property and strength of the paper sheet by utilizing the characteristic of positive charge of the chitosan serving as a reinforcing agent to a certain extent on the basis of ensuring the durability, stability and universality of the antibacterial property of the paper sheet.
7. The invention adopts a composite antibacterial mode of adding in the slurry and spraying on the surface, so that the antibacterial agent is uniformly distributed in the slurry, and meanwhile, on the premise of not influencing the surface performance, the micro-turbulence low-pressure pulse atomization spraying device is adopted for surface spraying, so that the surface of the composite antibacterial agent is enriched, the quick sterilization is facilitated when the composite antibacterial agent contacts bacteria, and the adhesion of the bacteria is prevented. The paper sheets are moistened again, and the deformability of the paper sheets is reduced after drying, so that the painting and calligraphy paper is not easy to deform and wrinkle when in use, and has good use effect.
8. According to the invention, the chitosan and inorganic silver ion composite antibacterial agent is used, so that the antibacterial and anticorrosive effects are achieved, and the reinforcing effect of the chitosan is utilized, so that various strength indexes of the paper sheet are improved. The paper is made by adopting the lateral flow type vacuum cylinder mould former, the paper is rewetted by spraying the composite antibacterial agent on the surface of the raw paper, and after secondary drying, the deformability of the paper is greatly reduced, the ink moistening performance of the paper is improved, and the applicability of the invention is improved.
Drawings
FIG. 1 is a schematic view of the surface spray process of the present invention.
FIG. 2 is a schematic illustration of the ink wetting of the present invention; wherein, a graph A shows the ink-wetting property of the antibacterial writing and painting paper prepared in example 1, a graph B shows the ink-wetting property of the antibacterial writing and painting paper prepared in example 2, and a graph C shows the ink-wetting property of the antibacterial writing and painting paper prepared in example 3.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
(1) preparing a sizing agent for netting;
① preparing pulp
Wherein the bleached bamboo pulp fiber is pulped by a hydrapulper, screened, deslagging and then pulped, and the pulping degree is 30 DEG SR to obtain bleached bamboo pulp for later use; pulping Chinese alpine rush fiber by a hydrapulper, screening, deslagging and pulping, wherein the pulping degree is 35 DEG SR, and obtaining Chinese alpine rush pulp for later use; the proportion of bleached bamboo pulp in the pulp tank is as follows: the mass ratio of the asparagus pulp is 5: 5;
② preparation of composite antibacterial agent
Chitosan (molecular weight 9.0 × 10, from Jinan native Biotechnology Ltd.) with deacetylation degree higher than 90%4) Dissolving in dilute acetic acid solution with the concentration of 3.0 percent by mass, and stirring for 3 hours; then, according to the chitosan: adding silver ion inorganic antibacterial agent (7600-Ag +25 in Japan oasis, Ag particle diameter is less than 0.5nm) at the inorganic antibacterial agent mass ratio of 1:1, adjusting the solution concentration to 8.0% by mass percent, standing for more than 5h to obtain composite antibacterial agent for later use;
③ configured into a pulp slurry
Dispersing agent (polyethylene oxide (PEO) with molecular weight of 400 ten thousand produced by Zhengzhou Shengyu chemical products Co., Ltd.), composite antibacterial agent and retention aid (cationic polyacrylamide with molecular weight of 400 ten thousand produced by Jiangsu Fu vast chemical industry) are sequentially added into the slurry, and the adding amount is respectively 0.4 wt%, 0.4 wt% and 0.05 wt% (based on the absolute dry content of the slurry); then adding light calcium carbonate (Guangzhou Liangjia chemical raw material Co., Ltd. CC1250), wherein the using amount of the light calcium carbonate is 1.0 wt% (calculated by pulp absolute dryness), fully mixing and reacting in a pulp storage tank, and then sizing by a pulp approach system;
(2) paper sheet making
① shaping with cylinder mould
Enabling the prepared net feeding slurry to pass through a lateral flow type vacuum cylinder mould former to form wet paper sheets, then dehydrating the wet paper sheets through a curtain pattern former to form rice paper-like patterns, and enabling the rice paper sheets to pass through two vacuum suction boxes, wherein the vacuum degrees are respectively 7kPa and 10kPa, and the dryness of the raw paper web of the net discharging part is about 25%; wherein, the sizing concentration of the sizing agent is 0.6 percent; the base paper wet paper web forming the moire patterns is sent to a press part through a net part, and the press part adopts a low-line press roll for pressing;
② front drying part
Conveying the squeezed wet paper web of the base paper into a front drying part through a net part, wherein the front drying part is provided with three hot air dryers, the temperatures of the first drying part, the second drying part and the third drying part are respectively 60 ℃, 100 ℃ and 80 ℃, and the dryness of the discharged paper is about 85%;
③ spray-type composite antibacterial agent
The base paper with the dryness reaching about 85 percent in the front drying part enters a spraying section, as shown in figure 1, a micro-turbulence low-pressure pulse atomization spraying device is adopted, and a composite antibacterial agent is sprayed on two sides, wherein the concentration of the composite antibacterial agent is 8.0 percent by mass, and the using amount of the composite antibacterial agent is 0.4 percent by weight (calculated by pulp absolute dryness);
④ post-drying section
Drying the wet paper after spraying for the second time, and drying by adopting a three-section hot air drying oven, wherein the temperatures of the first section, the second section and the third section are respectively 60 ℃, 90 ℃ and 70 ℃; then passing through a drying roller, the temperature is 80 ℃, and the paper sheet sticking cylinder blanket pressure is 0.5 Mpa; drying the paper sheet, passing through a cooling cylinder, and properly dampening; wherein the dryness of the discharged paper is about 90 percent, and the quantitative content is 35g/m2；
(3) Sheet winding and finishing
And (4) reeling the dried painting and calligraphy paper, slitting the painting and calligraphy paper outside according to the order requirement, and packaging.
Example 2:
(1) preparing a sizing agent for netting;
① preparing pulp
Wherein the bleached bamboo pulp fiber is pulped by a hydrapulper, screened, deslagging and then pulped, and the pulping degree is 35 DEG SR to obtain bleached bamboo pulp for later use; wherein the Chinese alpine rush fiber is pulped by a hydrapulper, screened, deslagging and pulped, and pulping degree is 40 DEG SR to obtain Chinese alpine rush pulp for later use; the proportion of bleached bamboo pulp in the pulp tank is as follows: the mass ratio of the asparagus pulp is 6: 4;
② preparation of composite antibacterial agent
Chitosan (molecular weight 9.0 × 10) with deacetylation degree greater than 90%4) Dissolving in dilute acetic acid solution with the concentration of 3.5 percent by mass, stirring for 3 hours, and mixing according to the weight ratio of chitosan: adding silver ion inorganic antibacterial agent (Japan oasis 7600-Ag +25) at an inorganic antibacterial agent mass ratio of 1:1, adjusting the solution concentration to 10% by mass, standing for more than 5h to obtain composite antibacterial agent for use;
③ configured into a pulp slurry
Sequentially adding a dispersing agent (polyethylene oxide (PEO) with the molecular weight of 400 ten thousand), a composite antibacterial agent and a retention aid (cationic polyacrylamide with the molecular weight of 400 ten thousand) into the slurry, wherein the adding amounts are 0.1 wt%, 0.6 wt% and 0.08 wt% respectively; then adding light calcium carbonate (Guangzhou Liangjia chemical raw material Co., Ltd. CC1250), wherein the light calcium carbonate is used in an amount of 5.0 wt%, fully mixing and reacting in a pulp storage tank, and then feeding the slurry into a system through a slurry feeding system for sizing;
(2) paper sheet making
① shaping with cylinder mould
Enabling the prepared upper mesh pulp to pass through a lateral flow type vacuum cylinder mould former to form wet paper sheets, then dehydrating the wet paper sheets through a curtain pattern former to form rice paper-like patterns, and enabling the rice paper sheets to pass through two vacuum suction boxes, wherein the vacuum degrees are 7kPa and 10kPa respectively, and the dryness of the wet paper sheets at the wire outlet part is about 25%; wherein, the sizing concentration of the sizing agent is 0.6 percent; the base paper wet paper web forming the moire patterns is sent to a press part through a net part, and the press part adopts a low-line press roll for pressing;
② front drying part
Conveying the squeezed wet paper web of the base paper into a front drying part through a net part, wherein the front drying part is provided with three hot air dryers, and the temperatures of the first drying part, the second drying part and the third drying part are respectively 60 ℃, 100 ℃ and 80 ℃; wherein the dryness of the discharged paper is about 85 percent;
③ spray-type composite antibacterial agent
The base paper with the dryness reaching about 85 percent in the front drying part enters a spraying section, and a micro-turbulence low-pressure pulse atomization spraying device is adopted to spray a composite antibacterial agent on the two sides of the base paper, wherein the concentration of the composite antibacterial agent is 10 percent by mass, and the using amount is 0.6 percent by weight;
④ post-drying section
Drying the wet paper after spraying for the second time, and drying by adopting a three-section hot air drying oven, wherein the temperatures of the first section, the second section and the third section are respectively 60 ℃, 90 ℃ and 70 ℃; then passing through a drying roller, the temperature is 80 ℃, and the paper sheet sticking cylinder blanket pressure is 0.5 Mpa; drying the paper sheet, passing through a cooling cylinder, and properly dampening; wherein the dryness of the discharged paper is about 90 percent, and the quantitative content is 40g/m2；
(3) Sheet winding and finishing
And (4) reeling the dried painting and calligraphy paper, slitting the painting and calligraphy paper outside according to the order requirement, and packaging.
Example 3:
(1) preparing a sizing agent for netting;
① preparing pulp
Wherein the bleached bamboo pulp fiber is pulped by a hydrapulper, screened, deslagging and then pulped, and the pulping degree is 40 DEG SR to obtain bleached bamboo pulp for later use; wherein the Chinese alpine rush fiber is pulped by a hydrapulper, screened, deslagging and pulped, and pulping degree is 35 DEG SR to obtain Chinese alpine rush pulp for later use; the proportion of bleached bamboo pulp in the pulp tank is as follows: the mass ratio of the asparagus pulp is 7: 3;
② preparation of composite antibacterial agent
Chitosan (molecular weight 9.0 × 10) with deacetylation degree greater than 90%4) Dissolving the mixture in dilute acetic acid solution with the concentration of 4.0 percent by mass, stirring for 3 hours, and mixing the mixture according to the weight ratio of chitosan: the mass ratio of the inorganic antibacterial agent is 1:1Adding silver ion inorganic antibacterial agent (7600-Ag +25 in Japan oasis), adjusting the solution concentration to 12% by mass, standing for more than 5h to obtain composite antibacterial agent for use;
③ configured into a pulp slurry
Sequentially adding a dispersing agent (polyethylene oxide (PEO) with the molecular weight of 400 ten thousand), a composite antibacterial agent and a retention aid (cationic polyacrylamide with the molecular weight of 400 ten thousand) into the slurry, wherein the adding amounts are 0.3 wt%, 0.8 wt% and 0.1 wt% respectively; then adding light calcium carbonate (Guangzhou Liangjia chemical raw material Co., Ltd. CC1250), wherein the light calcium carbonate is used in an amount of 10.0 wt%, fully mixing and reacting in a pulp storage tank, and then feeding the slurry into a system through a slurry feeding system for sizing;
(2) paper sheet making
① shaping with cylinder mould
Enabling the prepared net-feeding slurry to pass through a lateral flow type vacuum cylinder mould former to form wet paper sheets, and then dehydrating the wet paper sheets through a curtain pattern former to form rice paper-like patterns; then passing through two vacuum suction boxes, wherein the vacuum degrees are respectively 7kPa and 10kPa, and the dryness of the wet paper web at the wire outlet part is about 25 percent; wherein, the sizing concentration of the sizing agent is 0.6 percent; the base paper wet paper web forming the moire patterns is sent to a press part through a net part, and the press part adopts a low-line press roll for pressing;
② front drying part
Conveying the squeezed wet paper web of the base paper into a front drying part through a net part, wherein the front drying part is provided with three hot air dryers, and the temperatures of the first drying part, the second drying part and the third drying part are respectively 60 ℃, 100 ℃ and 80 ℃; wherein the dryness of the discharged paper is about 85 percent;
③ spray-type composite antibacterial agent
The base paper with the dryness reaching about 85 percent in the front drying part enters a spraying section, a micro-turbulence low-pressure pulse atomization spraying device is adopted, and a composite antibacterial agent is sprayed on two sides, wherein the concentration of the composite antibacterial agent is 12 percent by mass, and the using amount of the composite antibacterial agent is 0.8 percent by weight;
④ post-drying section
Drying the wet paper after spraying for the second time, and drying by adopting a three-section hot air drying oven, wherein the temperatures of the first section, the second section and the third section are respectively 60 ℃, 90 ℃ and 70 ℃; then passing through a drying roller at 80 deg.C, and pasting paper sheet in a cylinderThe blanket pressure is 0.5 Mpa; drying the paper sheet, passing through a cooling cylinder, and properly dampening; wherein the dryness of the discharged paper is about 90 percent, and the quantitative content is 45g/m2；
(3) Sheet winding and finishing
And (4) reeling the dried painting and calligraphy paper, slitting the painting and calligraphy paper outside according to the order requirement, and packaging.
Effects of the embodiment
Corresponding performance parameters of the writing and drawing paper prepared in the above examples 1 to 3 are respectively tested according to a standard method, wherein the antibacterial property refers to FZ/T73023-2006 antibacterial knitwear, the antibacterial property of the paper sheet is measured, the used strain is staphylococcus aureus ATCC6538, and the antibacterial performance of the sample is expressed by the antibacterial rate. The test results are shown in table 1:
table 1 results of performance testing
As can be seen from the performance parameters in Table 1, the antibacterial painting and calligraphy paper with controllable ink moistening performance provided by the invention has the excellent performances of proper tightness, high whiteness, long fracture, good tearing index and the like, and the water absorption is determined according to GB/T18739-2008, and the result is close to the water absorption of rice paper. Meanwhile, the antibacterial painting and calligraphy paper with controllable ink moistening performance has very good antibacterial performance.
The ink wettability was determined according to GB/T18739-2008 appendix B and is shown in FIG. 2: the ink mark is round, the ink mark edge is smooth, the layering sense is clear, wherein the ink moistening performance of the paper is weakened along with the increase of the consumption of PCC (light calcium carbonate), so that the ink moistening performance of the painting and calligraphy paper can be adjusted according to the actual use requirement.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (7)
1. The antibacterial painting and calligraphy paper with controllable ink moistening performance comprises a slurry and an auxiliary agent, and is characterized in that the slurry comprises the following components in parts by weight:
50-70 parts of bleached bamboo pulp
30-50 parts of asparagus pulp
The auxiliary agent comprises the following components in parts by weight:
the composite antibacterial agent is a composite antibacterial agent formed by compounding chitosan and an inorganic silver ion antibacterial agent;
the chitosan has a deacetylation degree of 90% and a molecular weight of 9.0 × 104The chitosan of (a);
the inorganic silver ion antibacterial agent is a nano silver antibacterial solvent;
the diameter of the nano silver particles of the nano silver antibacterial solvent is less than 0.5 nm;
the dispersant is polyoxyethylene;
the retention aid is cationic polyacrylamide;
the light calcium carbonate is light calcium carbonate with the particle size of more than 1000 meshes;
the compound antibacterial agent is prepared by the following method: stirring and dissolving chitosan in dilute acetic acid solution, adding an inorganic silver ion antibacterial agent, and standing to obtain a composite antibacterial agent; wherein, the chitosan and the inorganic silver ion antibacterial agent are mixed according to the mass ratio of 1: 1; the concentration of the dilute acetic acid solution is 3.0-4.0% by mass percent.
2. The antibacterial writing and drawing paper with controllable ink moistening performance according to claim 1, characterized in that:
the polyoxyethylene is polyoxyethylene with neutral pH and 400 ten thousand molecular weight;
the cationic polyacrylamide is cationic polyacrylamide with the molecular weight of 300-400 ten thousand.
3. The method for preparing the antibacterial writing and painting paper with controllable ink moistening performance of claim 1 or 2, which is characterized by comprising the following steps:
(I) preparing slurry: preparing a top-screening slurry according to the mixture ratio of the slurry and the auxiliary agent of claim 1 or 2;
(II) preparation of base paper: and (2) forming a wet paper sheet from the prepared net-feeding pulp by a paper machine, then conveying the wet paper sheet to a pressing part through a net part, then drying the wet paper web of the pressed base paper, spraying a composite antibacterial agent on the surface of the dried base paper, and finally drying the sprayed re-wet paper sheet for the second time to obtain the antibacterial painting and calligraphy paper with controllable ink moistening performance.
4. The method for preparing the antibacterial painting and calligraphy paper with controllable ink moistening performance of claim 3 is characterized by comprising the following steps:
(1) according to the proportioning of the pulp of claim 1, pulping bleached bamboo pulp fibers and Chinese alpine rush fibers respectively, and then mixing the bleached bamboo pulp with the beating degree of 30-40 degrees SR and the Chinese alpine rush pulp with the beating degree of 35-45 degrees SR to obtain the pulp;
(2) adding a composite antibacterial agent, a dispersing agent, a retention aid and light calcium carbonate into the slurry obtained in the step (1) according to the proportion of the auxiliary agent as claimed in claim 1 to obtain an upper-mesh slurry, wherein the adding amount of the composite antibacterial agent in the slurry is 50% of the total mass of the composite antibacterial agent;
(3) molding the upper net pulp obtained in the step (2) by a cylinder mould former to obtain wet paper sheets;
(4) conveying the wet paper sheet obtained in the step (3) to a press part through a net part for pressing to obtain a base paper wet paper web;
(5) conveying the base paper wet paper web obtained in the step (4) to a front drying part through a net part for drying to obtain base paper;
(6) spraying a composite antibacterial agent on the two sides of the base paper obtained in the step (5) to obtain a rewet paper sheet;
(7) and (4) drying the rewetted wet paper obtained in the step (6) for the second time, and then drying the rewetted wet paper by a drying roller and a cold cylinder to obtain the antibacterial painting and calligraphy paper with controllable ink moistening performance.
5. The method for preparing the antibacterial painting and calligraphy paper with controllable ink moistening performance according to claim 4, characterized in that:
the concentration of the composite antibacterial agent in the steps (2) and (6) is 8.0-12.0% by mass;
the sizing concentration of the sizing agent for the upper net in the step (3) is 0.4-0.8%.
6. The method for preparing the antibacterial painting and calligraphy paper with controllable ink moistening performance according to claim 4, characterized in that:
the cylinder mould former in the step (3) is a lateral flow type vacuum cylinder mould former;
the squeezing in the step (4) is performed by adopting a low-line compression roller;
the drying in the step (5) is performed by a hot air dryer, and the temperatures of the first drying section, the second drying section and the third drying section of the hot air dryer are respectively 60 ℃, 100 ℃ and 80 ℃;
the spraying in the step (6) is carried out by adopting a micro-turbulence low-pressure pulse atomization spraying device;
the drying in the step (7) is carried out by adopting a three-section type hot air drying oven, wherein the temperatures of a first drying section, a second drying section and a third drying section of the three-section type hot air drying oven are respectively 60 ℃, 90 ℃ and 70 ℃;
the temperature of the drying roller in the step (7) is 80 ℃.
7. The method for preparing the antibacterial painting and calligraphy paper with controllable ink moistening performance according to claim 4, characterized in that: and (4) winding the antibacterial painting and calligraphy paper with controllable ink moistening performance obtained in the step (7), and slitting and packaging the antibacterial painting and calligraphy paper outside the machine.
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| CN108774913A (en) * | 2018-07-11 | 2018-11-09 | 合肥华盖生物科技有限公司 | It is a kind of can antibacterial rose scent napkin paper preparation method |
| CN109975471A (en) * | 2019-02-27 | 2019-07-05 | 海南医学院 | A kind of preparation method of the information pattern paper base sensor of detection of heavy metal ion |
| CN111041888A (en) * | 2019-12-26 | 2020-04-21 | 同曦集团有限公司 | Antibacterial, mildew-proof and moth-proof rice paper pulp, rice paper and preparation method |
| CN111501398A (en) * | 2020-04-10 | 2020-08-07 | 华宝斋富翰文化有限公司 | Preparation method and application of acid-resistant and tearing-resistant handmade bamboo paper for mounting |
| CN111472196A (en) * | 2020-04-10 | 2020-07-31 | 浙江科技学院 | Durable manual writing and painting paper filled with micro-nano calcium and preparation method thereof |
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| CN102552964B (en) * | 2012-01-09 | 2014-04-09 | 李育强 | Nano silver chitosan composite antibacterial composition, adhesive bandage and preparation method of adhesive bandage |
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