CN115142298A - Packaging paper production process - Google Patents
Packaging paper production process Download PDFInfo
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- CN115142298A CN115142298A CN202210828218.0A CN202210828218A CN115142298A CN 115142298 A CN115142298 A CN 115142298A CN 202210828218 A CN202210828218 A CN 202210828218A CN 115142298 A CN115142298 A CN 115142298A
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 229920002472 Starch Polymers 0.000 claims abstract description 53
- 239000008107 starch Substances 0.000 claims abstract description 53
- 235000019698 starch Nutrition 0.000 claims abstract description 53
- 238000004513 sizing Methods 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000003756 stirring Methods 0.000 claims abstract description 32
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 22
- 239000010703 silicon Substances 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 16
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims description 53
- 239000007788 liquid Substances 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 10
- 239000000178 monomer Substances 0.000 claims description 10
- 238000012216 screening Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 229920001131 Pulp (paper) Polymers 0.000 claims description 7
- 239000013530 defoamer Substances 0.000 claims description 7
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 5
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 5
- 125000000129 anionic group Chemical group 0.000 claims description 5
- 238000003490 calendering Methods 0.000 claims description 5
- 125000002091 cationic group Chemical group 0.000 claims description 5
- -1 dimethyl siloxane Chemical class 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 5
- 229920002554 vinyl polymer Polymers 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 2
- 108090000623 proteins and genes Proteins 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000002209 hydrophobic effect Effects 0.000 abstract description 6
- 239000005871 repellent Substances 0.000 abstract description 6
- 230000018044 dehydration Effects 0.000 abstract description 5
- 238000006297 dehydration reaction Methods 0.000 abstract description 5
- 238000011049 filling Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000123 paper Substances 0.000 description 88
- 230000001954 sterilising effect Effects 0.000 description 7
- 238000004659 sterilization and disinfection Methods 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 4
- 230000004071 biological effect Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 239000011087 paperboard Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 1
- 241000658379 Manihot esculenta subsp. esculenta Species 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- 235000005018 Pinus echinata Nutrition 0.000 description 1
- 241001236219 Pinus echinata Species 0.000 description 1
- 235000017339 Pinus palustris Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- 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
- D21H27/10—Packing paper
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/12—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes
- C08F283/124—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes on to polysiloxanes having carbon-to-carbon double bonds
-
- 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
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a packaging paper production process, which comprises the following steps: the method comprises the following steps: adding 400-500kg of deionized water and 30-40kg of amphoteric starch into a glue pot, uniformly stirring, heating to 70-80 ℃, preserving heat for 6-8min, and uniformly stirring to obtain an internal sizing solution for later use; the amphoteric starch is starch with both cationic substituent and anionic substituent, and is added in the papermaking process to facilitate dehydration, fixing filling materials and improving strength; the beneficial effects of the invention are: the strength of the produced paper is increased by modifying the organic silicon defoaming agent; the solid surface sizing agent QN-388 has hydrophobic genes and forms water-repellent reaction genes with starch molecules, so that the water repellency of the paper surface sizing starch can be effectively improved, and the moisture regain and water resistance of paper surfaces can be prevented.
Description
Technical Field
The invention belongs to the technical field of packaging paper production, and particularly relates to a packaging paper production process.
Background
Four major pillars of modern packaging industry substrates: paper, plastic, glass, metal; among the four packaging base materials, the paper product grows fastest, the raw materials are widely available, the packaging base material is not as fragile as glass, is not as heavy as a metal material, is not convenient to carry, and does not have the environmental protection problem as plastic; compared with three major packaging base materials of plastic, metal and glass, the LCA (liquid crystal array), namely an ecological cycle assessment method, technology is adopted for quantitative assessment, and paper packaging is one of the most promising green packaging materials; at present, paper boxes, paper bags, paper barrels, paper pulp molded products and the like become important components of modern packaging industry, and are widely used for selling, packaging and transporting packages of food, wine, light industry, medicine, health care products, cosmetics, electronics, household appliances, clothes, toys, cultural and sports goods and the like, so that the packages are harmless and safe to human bodies, and environmental protection is promoted; paper packaging is therefore used in a very wide range of everyday life and is considered to be the most promising and potential packaging material.
The invention discloses a production method of sterilization wrapping paper, which is a Chinese patent with the application number of CN201110101320.2, and discloses a production method of sterilization wrapping paper, which comprises the following steps: (1) preparing an internal sizing solution; (2) a surface sizing liquid preparation procedure; (3) a pulp crushing procedure, wherein wood pulp is southern pine produced in America, and soda ash and carboxymethyl cellulose are added into a crushing liquid; (4) a pulp preparation procedure, namely adding a wet strength agent; (5) a step of forming on the net; (6) a surface sizing process, wherein the surface sizing solution uses cassava modified starch and polyvinyl alcohol; (7) the process is completed, so that the prepared packaging paper has the sterilization performance.
When the prepared wrapping paper is used, the wear resistance is not obvious, the wrapping paper is easy to abrade, and the packaging performance of the wrapping paper is influenced.
Disclosure of Invention
The invention aims to provide a packaging paper production process, which further increases the wear resistance of the produced packaging paper.
In order to achieve the purpose, the invention provides the following technical scheme: a production process of packaging paper comprises the following steps:
the method comprises the following steps: adding 400-500kg of deionized water and 30-40kg of amphoteric starch into a glue pot, uniformly stirring, heating to 70-80 ℃, preserving heat for 6-8min, and uniformly stirring to obtain an internal sizing solution for later use; the amphoteric starch is starch with both cationic substituent and anionic substituent, and is added in the process of papermaking so as to facilitate dehydration, fixing filling materials and improving strength;
step two: adding 260-360kg of deionized water and 30-40kg of modified organic silicon defoaming agent into a glue pot, stirring uniformly, slowly heating to 70-80 ℃, preserving heat for 10-16min, stirring uniformly, filtering into a material box, and preserving heat for later use at 55-65 ℃; the strength of the produced paper is increased by modifying the organic silicon defoaming agent;
step three: pumping paper pulp into a proportioning pool, adding the sizing liquid in the pulp prepared in the step one into the proportioning pool, adding the solid surface sizing agent QN-388 into the proportioning pool, and uniformly mixing for later use; the solid surface sizing agent QN-388 has hydrophobic genes and forms water-repellent reaction genes with starch molecules, so that the water repellency of the paper surface sizing starch can be effectively improved, and the moisture regain and water resistance of paper surfaces are prevented;
step four: screening and purifying by a fan pump, the sand removing device, the rotor wing sieve and the high-level box, then surfing the net for forming, and then squeezing, dehydrating and drying to obtain paper sheets;
step five: adding the paper sheet prepared in the forming procedure into the liquid in the material box in the second step with the weight concentration of 5% for surface sizing; then drying, press polishing and reeling to prepare paper rolls;
step six: and (3) finishing the working procedure: and cutting and packaging the paper roll according to different specifications.
As a preferable technical scheme of the invention, the preparation method of the amphoteric starch comprises the following steps: dispersing starch into water to obtain gelatinized starch; adding a cationic monomer and an anionic monomer into the gelatinized starch, stirring, continuously adding ammonium persulfate, heating and stirring to obtain a gel product; and finally, soaking and washing the gelatinous product by using deionized water, and drying to obtain the amphoteric starch.
As a preferable technical scheme, the preparation method of the modified organic silicon defoaming agent comprises the following steps: mixing vinyl silicone oil, allyl polyether and sodium allylsulfonate, and copolymerizing to obtain a mixed copolymer; the mixed copolymer and dimethyl siloxane are mixed and heated to obtain the modified organic silicon defoaming agent, so that the stability of the organic silicon defoaming agent is improved, and the strength of the produced paper is increased.
In a preferred embodiment of the present invention, in the fourth step, the moisture content after drying is less than 8%.
In the fifth step, the liquid in the bin in the second step with the weight concentration of 5% is added for surface sizing, and the sizing amount is controlled to be 1.2-1.6g/m 2 。
As a preferred technical scheme of the invention, the paper microwave dryer is used for drying, and is suitable for drying various papers and paper board products, the drying speed is high, the product quality is good, and the dried paper has smooth appearance, uniform color and no deformation; compared with the traditional drying such as hot air, steam and electric heating mode, the microwave drying equipment has the remarkable characteristics of high quality, high efficiency, energy conservation and environmental protection, the strong penetrability heating of the microwave avoids the problem of difficult heating in the traditional heating, the heat conduction process is avoided, the heat loss is avoided, the heating is uniform, the heating is rapid, the original color and texture of the paper product are greatly maintained, and meanwhile, no polluting gas and dust is discharged in the heating process, so that the microwave drying equipment is green and environment-friendly; the microwave drying equipment is accompanied with sterilization and mildew elimination while drying paper products, effectively kills mildew in the products, prolongs the storage period of the paper products, is not easy to yellow and discolor, and has the principle of the heat effect and the biological effect of microwaves on bacteria.
As a preferred solution of the invention, the calendering uses a paper calender.
In the sixth step, a paper roll splitting machine is adopted for splitting, and the efficiency of splitting the paper roll is improved through the paper roll splitting machine.
Compared with the prior art, the invention has the beneficial effects that:
(1) The strength of the produced paper is increased by modifying the organic silicon defoaming agent;
(2) The solid surface sizing agent QN-388 has a hydrophobic gene and forms a water-repellent reaction gene with starch molecules, so that the water repellency of the paper surface sizing starch can be effectively improved, and the moisture regain and water resistance of paper surfaces can be prevented.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, the present invention provides a technical solution: a packaging paper production process comprises the following steps:
the method comprises the following steps: adding 400kg of deionized water and 30kg of amphoteric starch into a glue pot, uniformly stirring, heating to 70 ℃, preserving heat for 6min, and uniformly stirring to obtain an internal sizing solution for later use; the amphoteric starch is starch with both cationic substituent and anionic substituent, and is added in the papermaking process to facilitate dehydration, fixing filling materials and improving strength;
step two: adding 260kg of deionized water and 30kg of modified organic silicon defoamer into a glue pot, stirring uniformly, slowly heating to 70 ℃, preserving heat for 10min, stirring uniformly, filtering into a material box, and preserving heat for later use at the temperature of 55-65 ℃; the strength of the produced paper is increased by modifying the organic silicon defoaming agent;
step three: pumping paper pulp into a proportioning pool, adding the sizing liquid in the pulp prepared in the step one into the proportioning pool, adding the solid surface sizing agent QN-388 into the proportioning pool, and uniformly mixing for later use; the solid surface sizing agent QN-388 has hydrophobic genes and forms water-repellent reaction genes with starch molecules, so that the water repellency of the paper surface sizing starch can be effectively improved, and the moisture regain and water resistance of paper surfaces can be prevented;
step four: screening and purifying by a pulp pump, a sand removing device, a rotor wing sieve and a high-level box, then screening and forming on the net, and then squeezing, dehydrating and drying to obtain paper sheets; the water content after drying is less than 8%;
step five: adding the paper sheet prepared in the forming procedure into the liquid in the material box in the second step with the weight concentration of 5 percent for surface sizing, wherein the sizing amount is controlled to be 1.2g/m 2 (ii) a Then drying, calendaring by a paper calender and coiling to prepare paper rolls; the paper microwave dryer is used for drying, is suitable for drying various papers and paperboard paper products, and has the advantages of high drying speed, good product quality, smooth appearance of the dried paper, uniform color and no deformation; compared with the traditional drying such as hot air, steam and electric heating mode, the microwave drying equipment has the remarkable characteristics of high quality, high efficiency, energy conservation and environmental protection, the strong penetrability heating of the microwave avoids the problem of difficult heating in the traditional heating, the heat conduction process is avoided, the heat loss is avoided, the heating is uniform, the heating is rapid, the original color and texture of the paper product are greatly maintained, and meanwhile, no polluting gas and dust is discharged in the heating process, so that the microwave drying equipment is green and environment-friendly; the microwave drying equipment is accompanied with sterilization and mildew elimination while drying the paper product, effectively kills mildew in the product, prolongs the storage period of the paper product, is not easy to yellow and discolor, and has the principle of the heat effect and the biological effect of microwave on bacteria;
step six: and (3) finishing the working procedure: cut the scroll according to different specifications, cut and adopt the scroll cutting machine, improve the efficiency that the scroll was cut, pack through the scroll cutting machine.
In this embodiment, the preparation method of the amphoteric starch is preferably as follows: dispersing starch into water to obtain gelatinized starch; adding a cationic monomer and an anionic monomer into the gelatinized starch, stirring, continuously adding ammonium persulfate, heating and stirring to obtain a gelatinous product; and finally, soaking and washing the gelatinous product by using deionized water, and drying to obtain the amphoteric starch.
In this embodiment, a preferred preparation method of the modified silicone defoamer is as follows: mixing vinyl silicone oil, allyl polyether and sodium allylsulfonate, and copolymerizing to obtain a mixed copolymer; the mixed copolymer and dimethyl siloxane are mixed and heated to obtain the modified organic silicon defoaming agent, so that the stability of the organic silicon defoaming agent is improved, and the strength of the produced paper is increased.
Example 2
Referring to fig. 1, the present invention provides a technical solution: a packaging paper production process comprises the following steps:
the method comprises the following steps: adding 450kg of deionized water and 35kg of amphoteric starch into a glue pot, uniformly stirring, heating to 75 ℃, preserving heat for 7min, and uniformly stirring to obtain an internal sizing solution for later use; the amphoteric starch is starch with both cationic substituent and anionic substituent, and is added in the papermaking process to facilitate dehydration, fixing filling materials and improving strength;
step two: adding 310kg of deionized water and 35kg of modified organic silicon defoamer into a glue pot, stirring uniformly, slowly heating to 75 ℃, keeping the temperature for 13min, stirring uniformly, filtering into a material box, and keeping the temperature at 60 ℃ for later use; the strength of the produced paper is increased by modifying the organic silicon defoaming agent;
step three: pumping paper pulp into a proportioning pool, adding the sizing liquid in the pulp prepared in the step one into the proportioning pool, adding the solid surface sizing agent QN-388 into the proportioning pool, and uniformly mixing for later use; the solid surface sizing agent QN-388 has hydrophobic genes and forms water-repellent reaction genes with starch molecules, so that the water repellency of the paper surface sizing starch can be effectively improved, and the moisture regain and water resistance of paper surfaces are prevented;
step four: screening and purifying by a pulp pump, a sand removing device, a rotor wing sieve and a high-level box, then screening and forming on the net, and then squeezing, dehydrating and drying to obtain paper sheets; the water content after drying is less than 8%;
step five: adding the paper sheet prepared in the forming process into the liquid in the material box in the second step with the weight concentration of 5 percent for surface sizing, wherein the sizing amount is controlled to be 1.4g/m 2 (ii) a Then drying, calendaring by a paper calender and coiling to prepare paper rolls; paper microwave dryer for drying, and the paper microwave dryer is suitable forThe drying device is suitable for drying various paper and paperboard products, the drying speed is high, the product quality is good, and the dried paper has smooth appearance, uniform color and no deformation; compared with the traditional drying such as hot air, steam and electric heating mode, the microwave drying equipment has the remarkable characteristics of high quality, high efficiency, energy conservation and environmental protection, the strong penetrability heating of the microwave avoids the problem of difficult heating in the traditional heating, the heat conduction process is avoided, the heat loss is avoided, the heating is uniform, the heating is rapid, the original color and texture of the paper product are greatly maintained, and meanwhile, no polluting gas and dust is discharged in the heating process, so that the microwave drying equipment is green and environment-friendly; the microwave drying equipment is accompanied with sterilization and mildew elimination while drying the paper product, effectively kills mildew in the product, prolongs the storage period of the paper product, is not easy to yellow and discolor, and has the principle of the heat effect and the biological effect of microwave on bacteria;
step six: and (3) finishing the working procedure: cut the scroll according to different specifications, cut and adopt the scroll cutting machine, improve the efficiency that the scroll was cut, pack through the scroll cutting machine.
In this embodiment, preferably, the preparation method of the amphoteric starch is as follows: firstly, dispersing starch into water to obtain gelatinized starch; adding a cationic monomer and an anionic monomer into the gelatinized starch, stirring, continuously adding ammonium persulfate, heating and stirring to obtain a gelatinous product; and finally, soaking and washing the gelatinous product by using deionized water, and drying to obtain the amphoteric starch.
In this embodiment, a preferred preparation method of the modified silicone defoamer is as follows: mixing vinyl silicone oil, allyl polyether and sodium allylsulfonate, and copolymerizing to obtain a mixed copolymer; the mixed copolymer and dimethyl siloxane are mixed and heated to obtain the modified organic silicon defoaming agent, so that the stability of the organic silicon defoaming agent is improved, and the strength of the produced paper is increased.
Example 3
Referring to fig. 1, the present invention provides a technical solution: a packaging paper production process comprises the following steps:
the method comprises the following steps: adding 500kg of deionized water and 40kg of amphoteric starch into a glue pot, uniformly stirring, heating to 80 ℃, preserving heat for 8min, and uniformly stirring to obtain an internal sizing solution for later use; the amphoteric starch is starch with both cationic substituent and anionic substituent, and is added in the papermaking process to facilitate dehydration, fixing filling materials and improving strength;
step two: adding 360kg of deionized water and 40kg of modified organic silicon defoamer into a glue pot, stirring uniformly, slowly heating to 80 ℃, keeping the temperature for 16min, stirring uniformly, filtering into a material box, and keeping the temperature at 65 ℃ for later use; the strength of the produced paper is increased by modifying the organic silicon defoaming agent;
step three: pumping paper pulp into a batching pool, adding the sizing liquid in the pulp prepared in the step one into the batching pool, adding a solid surface sizing agent QN-388 into the batching pool, and uniformly mixing for later use; the solid surface sizing agent QN-388 has hydrophobic genes and forms water-repellent reaction genes with starch molecules, so that the water repellency of the paper surface sizing starch can be effectively improved, and the moisture regain and water resistance of paper surfaces can be prevented;
step four: screening and purifying by a pulp pump, a sand removing device, a rotor wing sieve and a high-level box, then screening and forming on the net, and then squeezing, dehydrating and drying to obtain paper sheets; the water content after drying is less than 8 percent;
step five: adding the paper sheet prepared in the forming procedure into the liquid in the material box in the second step with the weight concentration of 5 percent for surface sizing, wherein the sizing amount is controlled to be 1.6g/m 2 (ii) a Then drying, calendaring by a paper calender and coiling to prepare paper rolls; the paper microwave dryer is used for drying, is suitable for drying various papers and paperboard paper products, and has the advantages of high drying speed, good product quality, smooth appearance of the dried paper, uniform color and no deformation; compared with the traditional drying such as hot air, steam and electric heating mode, the microwave drying equipment has the remarkable characteristics of high quality, high efficiency, energy conservation and environmental protection, the strong penetrability heating of the microwave avoids the problem of difficult heating in the traditional heating, the heat conduction process is avoided, the heat loss is avoided, the heating is uniform, the heating is rapid, the original color and texture of the paper product are greatly maintained, and meanwhile, no polluting gas and dust are discharged in the heating processThe environment is protected; the microwave drying equipment is accompanied with sterilization and mildew elimination while drying the paper product, effectively kills mildew in the product, prolongs the storage period of the paper product, is not easy to yellow and discolor, and has the principle of the heat effect and the biological effect of microwave on bacteria;
step six: and (3) finishing the working procedure: cut the scroll according to different specifications, cut and adopt the scroll cutting machine, improve the efficiency that the scroll was cut, pack through the scroll cutting machine.
In this embodiment, preferably, the preparation method of the amphoteric starch is as follows: firstly, dispersing starch into water to obtain gelatinized starch; adding a cationic monomer and an anionic monomer into the gelatinized starch, stirring, continuously adding ammonium persulfate, heating and stirring to obtain a gel product; and finally, soaking and washing the gelatinous product by using deionized water, and drying to obtain the amphoteric starch.
In this embodiment, a preferred preparation method of the modified silicone defoamer is as follows: mixing vinyl silicone oil, allyl polyether and sodium allylsulfonate, and copolymerizing to obtain a mixed copolymer; the mixed copolymer and dimethyl siloxane are mixed and heated to obtain the modified organic silicon defoaming agent, so that the stability of the organic silicon defoaming agent is improved, and the strength of the produced paper is increased.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A packaging paper production process is characterized in that: the production process comprises the following steps:
the method comprises the following steps: adding 400-500kg of deionized water and 30-40kg of amphoteric starch into a glue pot, uniformly stirring, heating to 70-80 ℃, preserving heat for 6-8min, and uniformly stirring to obtain an internal sizing solution for later use;
step two: adding 260-360kg of deionized water and 30-40kg of modified organic silicon defoamer into a glue pot, stirring uniformly, slowly heating to 70-80 ℃, preserving heat for 10-16min, stirring uniformly, filtering into a material box, and preserving heat for later use at the temperature of 55-65 ℃;
step three: pumping paper pulp into a batching pool, adding the sizing liquid in the pulp prepared in the step one into the batching pool, adding a solid surface sizing agent QN-388 into the batching pool, and uniformly mixing for later use;
step four: screening and purifying by a pulp pump, a sand removing device, a rotor wing sieve and a high-level box, then screening and forming on the net, and then squeezing, dehydrating and drying to obtain paper sheets;
step five: adding the paper sheet prepared in the forming procedure into the liquid in the material box in the second step with the weight concentration of 5% for surface sizing; then drying, press polishing and reeling to prepare paper rolls;
step six: and (3) finishing the working procedure: and cutting and packaging the paper roll according to different specifications.
2. A process for producing a wrapping paper as claimed in claim 1, wherein: the preparation method of the amphoteric starch comprises the following steps: dispersing starch into water to obtain gelatinized starch; adding a cationic monomer and an anionic monomer into the gelatinized starch, stirring, continuously adding ammonium persulfate, heating and stirring to obtain a gelatinous product; and finally, soaking and washing the gelatinous product by using deionized water, and drying to obtain the amphoteric starch.
3. A process for producing a wrapping paper as claimed in claim 1, wherein: the preparation method of the modified organic silicon defoaming agent comprises the following steps: mixing vinyl silicone oil, allyl polyether and sodium allylsulfonate, and copolymerizing to obtain a mixed copolymer; and mixing the mixed copolymer with dimethyl siloxane, and heating to obtain the modified organic silicon defoaming agent.
4. A process for producing a wrapping paper as claimed in claim 1, wherein: in the fourth step, the water content after drying is less than 8%.
5. A wrapping paper producing process according to claim 1,the method is characterized in that: in the fifth step, the liquid in the material box in the second step with the weight concentration of 5 percent is added for surface sizing, and the sizing amount is controlled to be 1.2 to 1.6g/m 2 。
6. A process for producing a wrapping paper as claimed in claim 1, wherein: the drying uses a paper microwave dryer.
7. A process for producing a wrapping paper as claimed in claim 1, wherein: the calendering uses a paper calender.
8. A process for producing a wrapping paper as claimed in claim 1, wherein: and in the sixth step, a paper roll splitting machine is adopted for splitting.
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